Patent Description:
Furthermore, a combined pressure and temperature sensor based on a bellows is known from <CIT>.

The present invention is defined by the claims, to which reference should now be made. Specific embodiments are defined in the dependent claims. Various examples described herein relate to methods, apparatuses, and systems for providing a combined temperature and pressure sensing device.

In some embodiments, the example bellows member may be hermetically sealed to the example sleeve member.

In some embodiments, the example sleeve member may comprise an example body portion and an example probe portion. In some embodiments, the example body portion may comprise an example side section and an example end section. In some embodiments, the example side section may be in an example perpendicular arrangement with the example end section.

In some embodiments, the example probe portion may protrude from an outer surface of the example end section of the example body portion of the example sleeve member.

In some embodiments, the example bellows member may be disposed in the example body portion of the example sleeve member.

In some embodiments, the example end section may comprise at least one example media opening that may be configured to receive an example liquid substance so that the example liquid substance may be in contact with the example bellows member.

In some embodiments, the first example circuit board element may extend from within the example bellows member to within the example probe portion of the example sleeve member.

In some embodiments, the apparatus may comprise an example port assembly. In some embodiments, the example sleeve member of the example media isolation chamber assembly may be secured to an example outer surface of the example port assembly.

In some embodiments, the example port assembly may comprise an example tunnel connecting a first example opening on the example outer surface of the example port assembly to a second example opening on an example inner surface of the example port assembly.

In some embodiments, the example tunnel may be configured to convey the example insulator media to the example bellows member of the example media isolation chamber assembly through the first example opening on the example outer surface of the example port assembly.

In some embodiments, the example apparatus may comprise an example sealing member covering the second example opening on the example inner surface of the example port assembly.

In some embodiments, the example apparatus may comprise a second example circuit board element disposed within the example port assembly.

In some embodiments, the apparatus may comprise at least one example terminal connector element electrically connecting the first example circuit board element to the second example circuit board element.

In some embodiments, the apparatus may comprise an example header member comprising an example glass-to-metal seal portion. In some embodiments, the example header member may be secured to the first example circuit board element and the example port assembly.

In some embodiments, the first example circuit board element may comprise an example signal conditioning element. In some embodiments, the example pressure sensing element may be electronically coupled to the example signal conditioning element.

In some embodiments, the example signal conditioning element may be configured to output an example electrical signal indicating an example detected pressure.

In some embodiments, the first example circuit board element may comprise an example signal amplifying element. In some embodiments, the example temperature sensing element may be electrically coupled to the example signal amplifying element.

In some embodiments, the first example circuit board element may comprise an example resistor element. In some embodiments, the example resistor element may be electrically coupled to the example temperature sensing element and the example signal amplifying element.

In some embodiments, the example signal amplifying element may be configured to output an example electrical signal indicating an example detected temperature.

In some embodiments, the first example circuit board element may be configured to output a first example electrical signal indicating an example detected pressure and a second example electrical signal indicating an example detected temperature.

Some embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown.

The phrases "in one embodiment," "according to one embodiment," and the like generally mean that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure, and may be included in more than one embodiment of the present disclosure (importantly, such phrases do not necessarily refer to the same embodiment).

The words "example" or "exemplary" are used herein to mean "serving as an example, instance, or illustration.

If the specification states a component or feature "may," "can," "could," "should," "would," "preferably," "possibly," "typically," "optionally," "for example," "often," or "might" (or other such language) be included or have a characteristic, that a specific component or feature is not required to be included or to have the characteristic.

The terms "electronically coupled," "electrically coupled," "electronically connected," or "electrically connected" in the present disclosure refer to two or more electrical elements (for example but not limited to, resistor element(s), capacitor element(s), inductor element(s), diode element(s)) and/or electric circuit(s) being connected through wired means (for example but not limited to, conductive wires or traces) and/or wireless means (for example but not limited to, electromagnetic field), such that energy (for example but not limited to electric current), signals, data and/or information may be transmitted to and/or received from the electrical elements and/or electric circuit(s) that are electronically coupled.

The term "element" in the present disclosure refers to one or more separable electronic component(s) or independent electronic unit(s) that may be used to form, construct, or otherwise be part of an electronic system. In some embodiments, an element may comprise one or more electronic device(s) or physical entity/entities that may provide one or more particular functions to the electronic system.

The term "pressure sensing element" in the present disclosure refers to an element that detects, senses, and/or measures the pressure of gaseous substance and/or liquid substance. In some embodiments, the pressure sensing element converts detected pressure into an analogues electrical signal. In some embodiments, an example pressure sensing element in accordance with various embodiments may be a micro-electromechanical system (MEMS) pressure sensing die that is built and packaged using MEMS techniques.

For example, an example pressure sensing element in accordance with various embodiments of the present disclosure is an example MEMS piezoresistive pressure sensor die. In this example, the example MEMS piezoresistive pressure sensor die may convert a pressure difference detected on a diaphragm into an electrical signal. Referring now to <FIG>, an example pressure sensing element <NUM> is provided. In the example shown in <FIG>, the example pressure sensing element <NUM> is in the form of an example MEMS piezoresistive pressure sensor die.

As shown in <FIG>, the example pressure sensing element <NUM> comprises a substrate <NUM>, a diaphragm <NUM>, and a plurality of piezoresistors (for example, four piezoresistors including a piezoresistor 406A and a piezoresistor 406B).

In some embodiments, the substrate <NUM> comprises material such as, but not limited to, glass, metal, and/or the like. In some embodiments, the substrate <NUM> comprises one or more materials that have similar thermal properties as the diaphragm <NUM>.

In some embodiments, the diaphragm <NUM> is bonded onto the substrate <NUM>. In some embodiments, the diaphragm <NUM> may comprise material such as, but not limited to, silicon. In some embodiments, the diaphragm <NUM> may be formed through a chemical etching process. For example, baths of etching chemicals may be applied on the silicon material of the diaphragm <NUM>, forming a cavity <NUM>.

In some embodiments, the example pressure sensing element <NUM> detects, senses, and/or measures pressure applied on the outer surface <NUM> of the diaphragm <NUM>. For example, a plurality of piezoresistors (for example, four piezoresistors including the piezoresistor 406A and the piezoresistor 406B) may be embedded on the outer surface <NUM> of the diaphragm <NUM> (and/or within the diaphragm <NUM>). In the present disclosure, a piezoresistor refers to a resistor that exhibits a change in its electrical resistance when mechanical strain or stress is applied on the resistor.

In some embodiments, when the outer surface <NUM> of the diaphragm <NUM> is in contact with gaseous substance and/or liquid substance whose pressure is to be detected, sensed, and/or measured, the gaseous substance and/or liquid substance exerts pressure on outer surface <NUM> of the diaphragm <NUM>, and the diaphragm <NUM> flexes away from the pressure (for example, towards the cavity <NUM>), causing strain in the plurality of piezoresistors (for example, four piezoresistors including the piezoresistor 406A and the piezoresistor 406B) that are embedded on the diaphragm <NUM>. In some embodiments, the four piezoresistors are electrically coupled to an electrical circuit (such as a Wheatstone bridge circuit). Referring now to <FIG>, an example circuit diagram associated with an example pressure sensing element in accordance with various embodiments of the present disclosure is illustrated.

In the example shown in <FIG>, the four piezoresistors disposed on the outer surface of the diaphragm of the pressure sensing element are represented as R<NUM>, R<NUM>, R<NUM>, and R<NUM>. In some embodiments, R<NUM>, R<NUM>, R<NUM>, and R<NUM> are electrically coupled to a Wheatstone bridge circuit. In particular, R<NUM> and R<NUM> may be electrically coupled to a first bridge branch of the Wheatstone bridge circuit between point A and point B as shown in <FIG>, and R<NUM> and R<NUM> may be electrically coupled to a second bridge branch of the Wheatstone bridge circuit between point A and point B as shown in <FIG>.

As described above, when pressure is applied on the outer surface of the diaphragm (for example, by gaseous substance and/or liquid substance whose pressure is to be detected, sensed, and/or measured), the piezoresistors R<NUM>, R<NUM>, R<NUM>, and/or R<NUM> can be strained, which can cause one or more changes in one or more electrical resistances of R<NUM>, R<NUM>, R<NUM>, and/or R<NUM>. As shown in the example circuit diagram <NUM> illustrated in <FIG>, a bias voltage Vs can be applied to the Wheatstone bridge circuit between point A and point B. Because of the one or more changes in one or more electrical resistances of R<NUM>, R<NUM>, R<NUM>, and/or R<NUM>, the voltage difference Vout between voltage Vc at point C of the Wheatstone bridge circuit (which is between R<NUM> and R<NUM>) and voltage Vd at point D of the Wheatstone bridge circuit (which is between R<NUM> and R<NUM>) may change. In some embodiments, the change in the voltage difference Vout corresponds to the pressure received on the outer surface of the diaphragm and exerted by the gaseous substance and/or liquid substance. As such, an example pressure sensing element in the form of an example MEMS piezoresistive pressure sensor die detects, senses, and/or measures the pressure of gaseous substance and/or liquid substance by generating an electrical signal corresponding to the voltage difference Vout.

While the description above provides an example of a pressure sensing element in the form of an example MEMS piezoresistive pressure sensor die in accordance with various embodiments of the present disclosure, it is noted that the scope of the present disclosure is not limited to the description above. In some examples, an example pressure sensing element may comprise one or more additional and/or alternative components, may be in one or more different forms, and/or may measure one or more different types of pressure.

For example, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of a MEMS capacitive pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments of the present disclosure is in the form of a potentiometric pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of an inductive pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of a variable reluctance pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of an absolute pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of a gauge sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element in accordance with example embodiments is in the form of a differential pressure sensor.

The term "temperature sensing element" in the present disclosure refers to an element that detects, senses, and/or measures the temperature of gaseous substance and/or liquid substance. In some embodiments, the temperature sensing element converts detected temperature into an analogues electrical signal.

For example, an example temperature sensing element in accordance with various embodiments is an example diode (for example, but not limited to, an example P-N junction diode, an example Zt diode). When a constant current is applied to the example diode, the voltage across the example diode (for example, the voltage between the P-N junction) is affected by the temperature of the environment that the example diode is in. As an example, when the example diode is in contact with (or through insulator media that is in contact with) the gaseous substance and/or liquid substance whose temperate is to be detected, sensed, and/or measured, the temperature of the gaseous substance and/or liquid substance may affect the voltage across the example diode. In some embodiments, when the temperature increases, the voltage across the example diode decreases. In some embodiments, when the temperature decreases, the voltage across the example diode increases.

In some embodiments, the example diode may have a temperature coefficient between <NUM> mV/°C and <NUM> mV/°C. In some embodiments, the example diode may have a temperature coefficient of <NUM> mV/°C. For example, when the example diode has a temperature coefficient of <NUM> mV/°C, the voltage across the example diode decreases by <NUM> mV when the temperature of the gaseous substance and/or liquid substance increases by <NUM>. In some embodiments, the example diode may have a temperature coefficient of other value(s) and/or within other range(s).

As such, an example temperature sensing element in the form of an example diode detects, senses, and/or measures the temperature of gaseous substance and/or liquid substance by generating an electrical signal corresponding to the voltage across the diode.

In some examples, an example temperature sensing element may comprise one or more additional and/or alternative components, may be in one or more different forms, and/or may measure one or more different types of temperature.

For example, in some embodiments, an example temperature sensing element in accordance with example embodiments is in the form of a thermocouple. Additionally, or alternatively, in some embodiments, an example temperature sensing element in accordance with example embodiments is in the form of a resistance temperature detector (RTD). Additionally, or alternatively, in some embodiments, an example temperature sensing element in accordance with example embodiments is in the form of a thermistor. Additionally, or alternatively, in some embodiments, an example temperature sensing element in accordance with various embodiments is a MEMS temperature sensing die that is built and packaged using MEMS techniques.

The term "signal conditioning element" in the present disclosure refers to an element that adjusts, manipulates, and/or otherwise conditions an analogues signal (such as an analogues electrical signal) so that the analogues signal meets certain processing requirements of electronic system. In some embodiments, an example signal conditioning element in accordance with various embodiments of the present disclosure may be an example Application Specific Integrated Circuit (ASIC). In some embodiments, the example ASIC may include one or more microprocessors electrically coupled to one or more memory units (such as, but not limited to, random-access memory (RAM), read-only memory (ROM), flash memory, and/or the like). In some embodiments, the one or more microprocessors of the example ASIC adjust, manipulate, and/or otherwise condition an analogues signal, and output the adjusted/manipulated/conditioned signal to the electronic system.

In some examples, an example signal conditioning element may comprise one or more additional and/or alternative components and/or may be in one or more different forms. For example, in some embodiments, an example signal conditioning element in accordance with example embodiments of the present disclosure is in the form of an analog-to-digital converter (ADC). The example ADC converts an analogues signal (such as an analogues electrical signal) into a digital signal.

The term "signal amplifying element" in the present disclosure refers to an element that increases, expands, and/or otherwise amplifies a signal (such as, but not limited to, an analogues electrical signal). In some embodiments, an example signal amplifying element in accordance with various embodiments may be an example instrumentation amplifier (INA). In such embodiments, the example INA comprises three operational amplifiers, where a non-inverting amplifier is connected to each input of a differential amplifier.

In some examples, an example signal amplifying element may comprise one or more additional and/or alternative components, and/or may be in one or more different forms.

The term "resistor element" in the present disclosure refers to an element that creates electrical resistance in the flow of electric current. In some embodiments, an example resistor element in accordance with example embodiments is an example resistor. In such an example, the example resistor may reduce electric current flow, divide electrical voltage, adjust electrical signal levels, and/or the like.

In some examples, an example resistor element may comprise one or more additional and/or alternative components and/or may be in one or more different forms.

The term "circuit board element" in the present disclosure refers to an element that mechanically supports and electrically connects electrical components or electronic components, including but not limited to, pressure sensing element(s), temperature sensing element(s), signal conditioning element(s), signal amplifying element(s), resistor element(s), terminal connector element(s), power source(s), and/or the like. In some embodiments, an example circuit board element may be in the form of an example printed circuit board (PCB). In such an example, the example PCB may comprise a non-conductive substrate and conductive tracks, pads and other features that are formed and/or printed on the non-conductive substrate (for example, through a chemical etching process).

In some embodiments, one or more other elements (such as, but not limited to, pressure sensing element(s), temperature sensing element(s), signal conditioning element(s), signal amplifying element(s), resistor element(s), terminal connector element(s), power source(s), and/or the like) are installed (for example, through a soldering process) onto the example PCB so that each of these elements is electrically coupled to one or more other elements and mechanically fastened onto the example PCB. In the present disclosure, an example PCB is also referred to as a printed circuit board assembly (PCBA).

In some examples, an example circuit board element may comprise one or more additional and/or alternative components and/or may be in one or more different forms.

The term "terminal connector element" in the present disclosure refers to an element that mechanically and/or electrically connects one circuit board element with another circuit board element. For example, an example terminal connector element in accordance with example embodiments is in the form of an example electrical connector (such as, but not limited to, an example metri-pack connector). In such an example, the example electrical connection may comprise material such as, but not limited to, copper alloys, brass, nickel, and/or the like.

In some examples, an example terminal connector element may comprise one or more additional and/or alternative components, and/or may be in one or more different forms.

The term "member" in the present disclosure refers to a mechanical and physical structure or unit can be used to form, construct, or otherwise be part of an apparatus, a machine, a device, and/or the like. Example members include, but not limited to, sleeve member, bellows member, sealing member, header member, and/or the like. The structural details and features of these members are described and illustrated in connection with various drawings.

As described above, there are many technical deficiencies and problems associated with sensors. For example, in many applications such as, but not limited to, electric vehicles, refrigeration systems, compressor systems, pumping systems, and/or the like, there is a need for a single sensing solution that detects, senses, and/or measures both pressure and temperature together in the same package in order to satisfy, for example, regulatory requirements, efficiency goals, and/or other objectives.

As an example, one of the key challenges in plug-in electric vehicle (PEV) is the time required for charging the battery cells/packs of the PEV and the availability of power outlets/chargers that provide sufficient capabilities in charging the battery cells/packs. The Society of Automotive Engineers classified charging stations/power outlets/chargers for PEVs into three levels: level <NUM>, level <NUM> and level <NUM>.

A level <NUM> charging station/power outlet/charger uses a standard <NUM> V alternating current (AC) electric circuit. The typical charging time for charging a PEV by a level <NUM> charging station/power outlet/charger is approximately <NUM> to <NUM> hours (depending on the model of the PEV), and provides approximately <NUM> to <NUM> miles (<NUM> to <NUM>) of range per hour of charging.

A level <NUM> charging station/power outlet/charger uses a <NUM> V (for residential) or <NUM> V (for commercial) AC electric circuit. The typical charging time for charging a PEV by a level <NUM> charging station/power outlet/charger is approximately <NUM> to <NUM> hours (depending on the model of the PEV), and provides approximately <NUM>-<NUM> miles (<NUM> to <NUM>) of range per hour of charging.

A level <NUM> (or direct current (DC) fast charge) charging station/power outlet/charger uses a <NUM> V AC electric circuit, and converts the AC into DC. The typical charging time for charging a PEV by a level <NUM> charging station/power outlet/charger is approximately <NUM> to <NUM> minutes (depending on the model of the PEV), and provides approximately <NUM>-<NUM> miles (<NUM> to <NUM>) of range per hour of charging.

As illustrated in the different charging times of a level <NUM> charging station/power outlet/charger, a level <NUM> charging station/power outlet/charger, and a level <NUM> charging station/power outlet/charger, higher power decreases charging time and makes charging a PEV faster. However, providing higher power to a PEV also generates more heat in the charging station/power outlet/charger, onboard battery cells/packs of the PEV, and/or charging cables. For example, extreme fast chargers can push the temperature of battery cells/packs in a PEV to <NUM> or <NUM> °F (<NUM>) after just a few minutes of charging. The heat generated from charging requires advanced cooling techniques to promote safe and reliable operation.

Due to the limitations of air-cooling solutions, liquid cooling solutions can be implemented in EV and PEV for enabling efficient performance and safe operations of onboard battery cells/packs, charging cables, and/or and other key EV components, such that they can handle the increased heat as the charging power increases.

For example, a PEV may use an onboard converter to manage the power flow from the charging station/power outlet/charger to the onboard battery cells/packs. When a level <NUM> charging station/power outlet/charger is implemented to charge a PEV, the onboard converter require efficient thermal management through, for example, liquid cooling solutions. As another example, onboard vehicle battery cells/packs must be thermally managed during charging and operation to maximize their life and performance, and liquid cooling solutions may provide the needed thermal management. As another example, implementing liquid cooling solutions in a charging cable may reduce the weight of the charging cable so that it is easier for consumers to handle.

Example liquid cooling solutions in an EV may be in various forms that all require a liquid coolant. For example, an example liquid cooling solution may be in the form of an example indirect cooling system that may comprise a series of pipes in the onboard converter, onboard battery cells/packs, charging cables, and/or and other key EV components, and the series of pipes may circulate liquid coolant. The liquid coolant absorbs excess heat and carries it away to, for example, a heat exchanger. Example liquid coolant in an example indirect cooling system may include, but not limited to, water, glycol (such as, but not limited to, ethylene glycol, propylene glycol), glycol-water mix, polyalphaolefin, fluorocarbon, and/or the like. As another example, an example liquid cooling solution may be in the form of an example direct cooling system, where liquid coolant is in direct contact with the onboard converter, onboard battery cells/packs, charging cables, and/or and other key EV components. In such an example, the liquid coolant may comprise electrically insulating but thermally conductive material, such as, but not limited to, deionized water, mineral oil, fluorocarbon, synthetic, and/or the like.

In various implementations of liquid cooling solutions, the pressure and temperature of the liquid coolant needs to be measured and monitored. Many liquid cooling solutions provide separate pressure sensors and temperature sensors, which are cost prohibitive and can add more weight to the EV/PEV, and manufacturers are in need of a compact sensor package. Using separate pressure sensors and temperature sensors not only requires more space but also impacts the accuracy of readings. Further, many liquid cooling solutions fail to provide sufficient isolation of the pressure sensors and the temperature sensors from the liquid coolant, which can be corrosive and cause damages to the pressure sensors and the temperature sensor.

Various embodiments may overcome various technical deficiencies and problems, including but not limited to those described above. For example, an example apparatus for sensing pressure and temperature in accordance with example embodiments comprises a media isolation chamber assembly that comprises a bellows member housing various sensing elements and functioning similar to a diaphragm. Insulator media (such as, but not limited to, silicon oil) is filled with in the bellows member so that the sensing elements are isolated from corrosive and/or wet media. A temperature sensing element is positioned within and at the end of the media isolation chamber assembly, so that it can provide precise reading of temperature associated with the fluid substance to be measured. In some embodiments, a pressure sensing element (such as, but not limited to, a MEMS pressure sensor) and the temperature sensing element may be installed on a circuit board element (such as, but not limited to, a PCBA) that is disposed within the media isolation chamber assembly, and the circuit board element may carry other elements such as, but not limited to, signal conditioning element(s) (such as, but not limited to, ASICs), signal amplifying element(s) and/or the like. In some embodiments, the circuit board element is connected to (for example, through soldering) to a terminal connector element and provides electrical signals to another circuit board element, which in turn provides electrical signals to another terminal connector element that extends outside the example apparatus. Further, example embodiments of the present disclosure provide a compact design of an electric circuit that provides separate outputs, one corresponding to detected pressure and another corresponding to detected temperature, details of which are described herein.

As such, example embodiments of the present disclosure may provide a compact design that causes less thermal loss and improves accuracy of the pressure and temperature measurement, and/or may isolate sensing elements from corrosive and/or wet media to protect the sensing elements, details of which are described herein.

In some examples, example embodiments of the present disclosure may be implemented in other applications/environments/systems, including, but not limited to, refrigeration systems, compressor systems, pumping systems, and/or the like.

Referring now to <FIG> and <FIG>, an example apparatus <NUM> for sensing pressure and temperature in accordance with various embodiments in accordance with the claimed invention is illustrated. In particular, <FIG> illustrates an example cross-sectional front view of the example apparatus <NUM>. <FIG> illustrates an example cross-sectional side view of the example apparatus <NUM> along the cut line A-A' and viewing in the direction of the arrows in <FIG>.

In the example shown in <FIG>, the example apparatus <NUM> comprises at least an example media isolation chamber assembly <NUM>, a first example circuit board element <NUM>, an example pressure sensing element <NUM>, and an example temperature sensing element <NUM>.

The example media isolation chamber assembly <NUM> comprises an example bellows member <NUM> and an example sleeve member <NUM>.

In some embodiments, the example sleeve member <NUM> is in a shape similar to a hollow cylindrical shape. For example, the example sleeve member <NUM> is in a shape similar to a right cylinder shape. In some embodiments, the example sleeve member <NUM> comprises an example body portion <NUM> having an example side section <NUM> and an example end section <NUM>.

In some embodiments, the example side section <NUM> of the example body portion <NUM> may be formed based on the points on the example side section <NUM> having a fixed distance from a central axis of the example sleeve member <NUM>. As described above, the example sleeve member <NUM> may be in a shape similar to a hollow cylindrical shape, and the central axis of the example sleeve member <NUM> may correspond to the central axis of the hollow cylindrical shape.

In some embodiments, the example end section <NUM> of the example body portion <NUM> may be formed based on the example end section <NUM> being in a parapedicular arrangement with the example side section <NUM>. As described above, the example sleeve member <NUM> may be in a shape similar to a hollow cylindrical shape, and the example end section <NUM> may correspond to an example end plane of the hollow cylindrical shape.

As shown in <FIG>, the example sleeve member <NUM> also comprises an example probe portion <NUM>. In some embodiments, the example probe portion <NUM> protrudes from an example outer surface of the example end section <NUM> of the example body portion <NUM> of the example sleeve member <NUM>. In the example shown in <FIG>, the example probe portion <NUM> may be in a shape similar to a half-capsule shape that comprises a cylinder-shaped portion and a hemispherical end portion.

In some embodiments, the example probe portion <NUM> of the example sleeve member <NUM> is connected to the example body portion <NUM>. For example, the example probe portion <NUM> may be formed on the example end section <NUM> of the example body portion <NUM>.

In some embodiments, the example sleeve member <NUM> may comprise material such as, but not limited to, stainless steel, beryllium copper, phosphor bronze, metal alloys, and/or the like. In some embodiments, the example sleeve member <NUM> may comprise other material(s). In some embodiments, the example sleeve member <NUM> may be formed through, for example but not limited to, a deep drawing process.

In some examples, an example sleeve member may comprise one or more additional and/or alternative elements, and/or may be in other shapes/forms. For example, an example body portion of an example sleeve member may be in shapes other than a hollow cylindrical shape, such as, but not limited to, a cube shape, a sphere shape, a prism shape, a cone shape, a pyramid shape, and/or the like. Additionally, or alternatively, an example probe portion of an example sleeve member may be in shapes other than a half-capsule shape, such as, but not limited to, a cube shape, a sphere shape, a prism shape, a cone shape, a pyramid shape, and/or the like.

Referring back to the example shown in <FIG>, as described above, the example media isolation chamber assembly <NUM> comprises the example bellows member <NUM>. In some embodiments, the example bellows member <NUM> acts as a diaphragm. In some embodiments, the example bellows member <NUM> may be in the form of an elastic tube/tubing that can be compressed when pressure is applied to the outer surface of the elastic tube/tubing, and/or may be extended when pressure that has been applied to the outer surface of the elastic tube/tubing is removed.

For example, the example bellows member <NUM> may be in the form of a tube or tubing in a hollow cylindrical shape. In this example, the side section of the example bellows member <NUM> is corrugated and comprises alternating ridges and grooves. When pressure is applied to the side section of the example bellows member <NUM>, the example bellows member <NUM> may be compressed. When pressure that has been applied to the side section of the example bellows member <NUM> is removed, the example bellows member <NUM> may be extended.

In some embodiments, the example bellows member <NUM> may comprise material such as, but not limited to, stainless steel, beryllium copper, phosphor bronze, metal alloys, and/or the like. In some embodiments, the example bellows member <NUM> may comprise other material(s).

In some embodiments, the example bellows member <NUM> may be formed through a welding process. For example, a number of individually formed diagrams may be welded together to form alternating ridges and grooves of the example bellows member <NUM>. Additionally, or alternatively, an example bellows member <NUM> may be formed through a hydroforming process. Additionally, or alternatively, an example bellows member <NUM> may be formed through a deep drawing process. Additionally, or alternatively, an example bellows member <NUM> may be formed through an electroforming process. Additionally, or alternatively, an example bellows member <NUM> may be formed through other manufacturing process(es).

The example bellows member <NUM> is disposed in the example sleeve member <NUM>. For example, as described above, the example bellows member <NUM> may be in a shape similar to a hollow cylindrical shape, and the example sleeve member <NUM> may be in a shape similar to a hollow cylindrical shape. In some embodiments, the example bellows member <NUM> is positioned within the example sleeve member <NUM>, and the central axis of the example bellows member <NUM> is in a parallel arrangement with the central axis of the example sleeve member <NUM>.

In some embodiments, the example bellows member <NUM> is disposed in the example body portion <NUM> of the example sleeve member <NUM>. In some embodiments, the example bellows member <NUM> is hermetically sealed to the example body portion <NUM> of the example sleeve member <NUM>. For example, an end edge of the example bellows member <NUM> is hermetically sealed to the example end section <NUM> of the example body portion <NUM> of the example sleeve member <NUM>, so that liquid substance and gaseous substance do not travel into the example bellows member <NUM> through the example sleeve member <NUM>.

In some embodiments, the example bellows member <NUM> is hermetically sealed to the example sleeve member <NUM> through a welding process using laser. In some embodiments, the example bellows member <NUM> is hermetically sealed to the example sleeve member <NUM> through other process(es).

In some embodiments, the example sleeve member <NUM> comprises at least one media opening on its surface. In the example shown in <FIG>, the example end section <NUM> of the example probe portion <NUM> of the example sleeve member <NUM> comprises a media opening 120A and a media opening 120B. In some embodiments, the media opening 120A and the media opening 120B may be formed through a deep drawing process. In some embodiments, the media opening 120A and the media opening 120B may be formed through other manufacturing process(es).

In some embodiments, the media opening(s) on the example end section <NUM> of the example probe portion <NUM> of the example sleeve member <NUM> is configured to receive a liquid substance, and the pressure of the liquid substance is to be detected by the example apparatus <NUM>. For example, the liquid substance may enter the example sleeve member <NUM> through the at least one media opening and fill the cavity formed between outer surface of the example bellows member <NUM> and the example body portion <NUM> of the example sleeve member <NUM> (e.g. the inner surface opposite to the example side section <NUM>). The liquid substance may be in contact with the outer surface of the example bellows member <NUM>, but does not enter the example bellows member <NUM> because the example bellows member <NUM> is hermetically sealed to the example sleeve member <NUM>.

The example bellows member <NUM> houses or otherwise contains insulator media. In some embodiments, the insulator media comprises electrically insulating but thermally conductive material. Examples of insulator media may include, but not limited to, silicon oil, mineral oil, fluorocarbon, synthetic, and/or the like.

Referring back to the example shown in <FIG>, as described above, the example apparatus <NUM> comprises the first example circuit board element <NUM>. As described above, the first example circuit board element <NUM> may be in the form of an example PCB. In such an example, the first example circuit board element <NUM> comprises a non-conductive substrate and conductive tracks, pads and other features that are formed on the non-conductive substrate (for example, through a chemical etching process).

In some embodiments, one or more other elements (such as, but not limited to, pressure sensing element(s), temperature sensing element(s), signal conditioning element(s), signal amplifying element(s), resistor element(s), terminal connector element(s), power source(s), and/or the like) are installed (for example, through a soldering process) onto the first example circuit board element <NUM> so that each of these elements is electrically coupled to one or more other elements and mechanically fastened onto the first example circuit board element <NUM>. For example, the example pressure sensing element <NUM> and/or example temperature sensing element <NUM> are installed on the first example circuit board element <NUM>. In some embodiments, one or more signal conditioning element(s) and/or signal amplifying element(s) are installed on the first example circuit board element <NUM>. Similar to those described above, the first example circuit board element <NUM> with elements installed is also referred to as a first example PCBA.

As shown in <FIG>, the first example circuit board element <NUM> is disposed in the example bellows member <NUM>. In some embodiments, the first example circuit board element <NUM> extends from within the example bellows member <NUM> to within the example probe portion <NUM> of the example sleeve member <NUM>. In some embodiments, an edge of the first example circuit board element <NUM> is secured to an inner surface of the example probe portion <NUM> of the example sleeve member <NUM> through, for example but not limited to, a welding process.

The first example circuit board element <NUM> is encapsulated by the insulator media. In some embodiments, the first example circuit board element <NUM> is completely submerged within the insulator media (such as, but not limited to, silicon oil). In some embodiments, the first example circuit board element <NUM> is partially submerged within the insulator media (such as, but not limited to, silicon oil). In some embodiments, the insulator media and the example bellows member <NUM> protect the first example circuit board element <NUM> (as well as other elements electrically coupled to the first example circuit board element <NUM>) from corrosive and wet media (for example, the liquid substance entering through the media opening 120A and media opening 120B as described above).

Referring back to the example shown in <FIG>, as described above, the example apparatus <NUM> comprises the example pressure sensing element <NUM>. As described above, the example pressure sensing element <NUM> detects, senses, and/or measures the pressure of gaseous substance and/or liquid substance. In some embodiments, the example pressure sensing element <NUM> in accordance with various embodiments is a MEMS pressure sensing die that is built and packaged using MEMS techniques, similar to those described above and illustrated in connection with <FIG>.

Additionally, or alternatively, in some embodiments, the example pressure sensing element <NUM> in accordance with example embodiments is in the form of a MEMS capacitive pressure sensor. Additionally, or alternatively, in some embodiments, the example pressure sensing element <NUM> in accordance with example embodiments is in the form of a potentiometric pressure sensor. Additionally, or alternatively, in some embodiments, the example pressure sensing element <NUM> in accordance with example embodiments of the present disclosure is in the form of an inductive pressure sensor. Additionally, or alternatively, in some embodiments, the example pressure sensing element <NUM> in accordance with example embodiments is in the form of a variable reluctance pressure sensor. Additionally, or alternatively, in some embodiments, an example pressure sensing element may comprise one or more additional and/or alternative components and/or may be in one or more different form(s).

As described above, the example pressure sensing element <NUM> is disposed in the example bellows member <NUM> and submerged in and/or encapsulated by the insulator media. As described above, liquid substance (whose pressure is to be measured by the apparatus <NUM>) may enter the cavity between the example bellows member <NUM> and the example sleeve member <NUM> through the media opening 120A and/or the media opening 120B, and the liquid substance is in contact with outer surface of the example bellows member <NUM>. Further, as described above, the example bellows member <NUM> acts as a diaphragm. For example, the example bellows member <NUM> may be in the form of an elastic tube/tubing that can be compressed when pressure is applied to the outer surface of the elastic tube/tubing. As such, the pressure from the liquid substance may be transferred to the example bellows member <NUM> as the liquid substance enters through the media opening 120A and/or the media opening 120B. The bellows member <NUM> houses insulator media (such as silicon oil), and the pressure is transferred through the insulator media (such as silicon oil) to the example pressure sensing element <NUM>. In some embodiments, the example pressure sensing element <NUM> generates an electrical signal that corresponds to the pressure of the liquid substance.

In various embodiments, an example pressure sensing element <NUM> measures one or more different types of pressure. For example, the example pressure sensing element <NUM> in accordance with example embodiments measures an absolute pressure of the liquid substance relative to a reference of zero pressure. Additionally, or alternatively, the example pressure sensing element <NUM> in accordance with example embodiments measures a pressure relative to the atmospheric pressure. Additionally, or alternatively, the example pressure sensing element <NUM> in accordance with example embodiments of the present disclosure measures a pressure between two points in the flow of the liquid substance.

Referring back to the example shown in <FIG>, the example pressure sensing element <NUM> is electrically coupled to the first example circuit board element <NUM>. In such an example, the example pressure sensing element <NUM> provides the electrical signal that corresponds to the pressure of the liquid substance to other elements of the example apparatus <NUM>, details of which are described herein.

As described above, the example apparatus <NUM> comprises the example temperature sensing element <NUM>. The example temperature sensing element <NUM> detects, senses, and/or measures the temperature of gaseous substance and/or liquid substance. In some embodiments, the example temperature sensing element <NUM> in accordance with various embodiments is an example diode (for example, but not limited to, an example P-N junction diode), similar to those described above. Additionally, or alternatively, the example temperature sensing element <NUM> in accordance with example embodiments is in the form of a thermocouple. Additionally, or alternatively, the example temperature sensing element <NUM> in accordance with example embodiments is in the form of a resistance temperature detector (RTD). Additionally, or alternatively, the example temperature sensing element <NUM> in accordance with example embodiments is the form of a thermistor. Additionally, or alternatively, the example temperature sensing element <NUM> in accordance with various embodiments is a MEMS temperature sensing die that is built and packaged using MEMS techniques.

The example temperature sensing element <NUM> is disposed in the example sleeve member <NUM>. As shown in <FIG>, the example temperature sensing element <NUM> is disposed in the example probe portion <NUM> of the example sleeve member <NUM>. As the example bellows member <NUM> is disposed in and hermetically sealed to the example body portion <NUM> of the example sleeve member <NUM>, the example probe portion <NUM> of the example sleeve member <NUM> is connected to the example bellows member <NUM>, and both the example bellows member <NUM> and the example probe portion <NUM> of the example sleeve member <NUM> house or otherwise contain isolation media. As such, the example temperature sensing element <NUM> is submerged in and/or encapsulated by the insulator media (such as silicon oil).

In some embodiments, liquid substance (whose temperature is to be measured) is in contact with the example probe portion <NUM> of the example sleeve member <NUM>. Because the example temperature sensing element <NUM> is disposed in the example probe portion <NUM> of the example sleeve member <NUM>, the example temperature sensing element <NUM> generates an electrical signal that corresponds to the temperature of the liquid substance.

As shown in <FIG>, the example temperature sensing element <NUM> is electrically coupled to the first example circuit board element <NUM>. In such an example, the example temperature sensing element <NUM> provides an electrical signal that corresponds to the temperature of the liquid substance to other elements of the example apparatus <NUM>, details of which are described herein.

In some examples, a sensing element provides capability to measure both pressure and temperature (for example, a MEMS pressure sensing die having temperature measure options using a Zt diode), such that separate pressure sensing element and temperature sensing element are not needed. In such examples, the sensing element is positioned corresponding to the position of the example pressure sensing element <NUM> illustrated in <FIG> or corresponding to the position of the example temperature sensing element <NUM> illustrated in <FIG>. An example apparatus comprising such an example sensing element is illustrated and described in connection with at least <FIG>, <FIG>, and <FIG>.

Referring back to <FIG>, the example apparatus <NUM> comprises an example port assembly <NUM>. In some embodiments, the example media isolation chamber assembly <NUM> is secured to the example port assembly <NUM>. For example, an edge of the example sleeve member <NUM> of the example media isolation chamber assembly <NUM> is secured to an outer surface <NUM> of the example port assembly <NUM> through, for example but not limited to, a welding process. Additionally, or alternatively, an edge of the example bellows member <NUM> of the example media isolation chamber assembly <NUM> is secured to the outer surface <NUM> of the example port assembly <NUM> through, for example but not limited to, a welding process.

In the example shown in <FIG>, the example port assembly <NUM> comprises an example tunnel <NUM> that connects an example first opening <NUM> on the example outer surface <NUM> of the example port assembly <NUM> to an example second opening <NUM> on an inner surface of the example port assembly <NUM>. In such an example, the example tunnel <NUM> is configured to convey the insulator media (such as, but not limited to, silicon oil) to the example bellows member <NUM> of the example media isolation chamber assembly <NUM> (as well as the example probe portion <NUM> of the example sleeve member <NUM>) through the example first opening <NUM> on the example outer surface <NUM> of the example port assembly <NUM>.

For example, to inject the insulator media to the example bellows member <NUM> of the example media isolation chamber assembly <NUM> and the example probe portion <NUM> of the example sleeve member <NUM>, the insulator media is provided to the example second opening <NUM> on the inner surface of the example port assembly <NUM>. The insulator media enters the example tunnel <NUM> through the example second opening <NUM>, travels through the example tunnel <NUM>, and egresses the example tunnel <NUM> through the example first opening <NUM>. In some embodiments, the example first opening <NUM> is position within the example bellows member <NUM>. As such, the insulator media is provided to the example bellows member <NUM>. Because the example probe portion <NUM> of the example sleeve member <NUM> is connected to the example bellows member <NUM>, the insulator media is provided to example probe portion <NUM> of the example sleeve member <NUM> through the bellows member <NUM>. Additionally, or alternatively, when pressure is exerted on the example bellows member <NUM>, the insulator media disposed within the example bellows member <NUM> is pushed through the example tunnel <NUM>.

Referring back to the example shown in <FIG>, in some embodiments, the example apparatus <NUM> also comprises an example sealing member <NUM> (for example, a sealing ball) that covers the example second opening <NUM>. For example, once the example bellows member <NUM> and the example probe portion <NUM> of the example sleeve member <NUM> are filled with insulator media, the example sealing member <NUM> is positioned on the example second opening <NUM> to seal the example tunnel <NUM>, such that the insulator media does not leak from the example bellows member <NUM> or the example probe portion <NUM> through the example tunnel <NUM>.

In some embodiments, the example apparatus <NUM> comprises a second example circuit board element <NUM>.

As described above, the second example circuit board element <NUM> may be in the form of an example PCB. In such an example, the second example circuit board element <NUM> comprises a non-conductive substrate and conductive tracks, pads and other features that are formed on the non-conductive substrate (for example, through a chemical etching process).

In some embodiments, one or more other elements (such as, but not limited to, pressure sensing element(s), temperature sensing element(s), signal conditioning element(s), signal amplifying element(s), resistor element(s), terminal connector element(s), power source(s), and/or the like) are installed (for example, through a soldering process) onto the second example circuit board element <NUM> so that each of these elements is electrically coupled to one or more other elements and mechanically fastened onto the second example circuit board element <NUM>. For example, an example signal conditioning element and an example signal amplifying element is installed on the second example circuit board element <NUM>. Similar to those described above, the second example circuit board element <NUM> with elements installed is also referred to as a second example PCBA.

In some embodiments, the second example circuit board element <NUM> is disposed within the example port assembly <NUM>. In some embodiments, the example apparatus <NUM> comprises at least one terminal connector element (for example, a first example terminal connector element 135A and a second example terminal connector element 135B) that electrically couples the second example circuit board element <NUM> with the first example circuit board element <NUM>. For example, various electrical signals, data, and/or information are communicated between the second example circuit board element <NUM> and the first example circuit board element <NUM> through the first example terminal connector element 135A and/or the second example terminal connector element 135B. In some embodiments, one end of the at least one terminal connector element (for example, one end of the first example terminal connector element 135A and/or one end of the second example terminal connector element 135B) is secured to the second example circuit board element <NUM> through, for example but not limited to, a soldering process. In some embodiments, one end of the at least one terminal connector element (for example, one end of the first example terminal connector element 135A and/or one end of the second example terminal connector element 135B) is secured to first example circuit board element <NUM> through, for example but not limited to, a soldering process.

In the example shown in <FIG>, the example apparatus <NUM> comprises an example header member <NUM> secured to the first example circuit board element <NUM> and the example port assembly <NUM>. In some embodiments, the example header member <NUM> may be in the form of a transistor outline (TO) header that provides a mechanical basis for securing and installing various elements. For example, the first example circuit board element <NUM> is secured to the example header member <NUM> through, such as but not limited to, a soldering process. In some embodiments, the example header member <NUM> comprises a glass-to-metal seal portion <NUM> that secured the first example circuit board element <NUM> to the example header member <NUM>. In some embodiments, one or more of the at least one terminal connector element (for example, the first example terminal connector element 135A and/or the second example terminal connector element 135B) passes through the glass-to-metal seal portion <NUM>. In some embodiments, the example header member <NUM> is secured to the example port assembly <NUM> through, for example but not limited to, a welding process.

In the example shown in <FIG>, the example port assembly <NUM> comprises a threaded portion <NUM> disposed on the outer surface of the example port assembly <NUM>. In some embodiments, the example apparatus <NUM> comprises at least one connection wire <NUM> that electrically couples the second example circuit board element <NUM> to at least one example terminal connector element <NUM>. As shown in <FIG>, the at least one example terminal connector element <NUM> extends outside of the example apparatus <NUM>. In some embodiments, the example apparatus <NUM> comprises at least one environmental O-ring <NUM> for sealing the example header member <NUM> with the example port assembly <NUM>. In some embodiments, the example apparatus <NUM> do not comprise O-ring or gasket.

In some examples, an example apparatus for sensing pressure and temperature in accordance with examples may comprise one or more additional and/or alternative elements.

Referring now to <FIG>, an example cross-sectional view of the example apparatus <NUM> along the cut line A-A' and viewing in the direction of the arrows in <FIG> is illustrated. In particular, <FIG> illustrates example measurements associated with the example apparatus <NUM>.

As shown in <FIG>, the example probe portion <NUM> of the example sleeve member <NUM> has a height H3 and a width W4 (which corresponds to a diameter of the example probe portion <NUM>). In some embodiments, the height H3 is in the range from <NUM> millimeters to <NUM> millimeters. In some embodiments, the height H3 is <NUM> millimeters. In some embodiments, the width W4 is in the range from <NUM> millimeters to <NUM> millimeters. In some embodiments, the width W4 is <NUM> millimeters.

In some embodiments, the example body portion <NUM> of the example sleeve member <NUM> has a width W3 (which corresponds to a diameter of the example body portion <NUM>). In some embodiments, the width W3 is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the width W3 is <NUM> millimeters. In some embodiments, the thickness of the example body portion <NUM> of the example sleeve member <NUM> is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the thickness of the example body portion <NUM> is <NUM> millimeters.

In some embodiments, the example sleeve member <NUM> has a height H2. In some embodiments, the height H2 is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the height H2 is <NUM> millimeters.

In some embodiments, the example bellows member <NUM> has a width W1 (which corresponds to a diameter of the example bellows member <NUM>). In some embodiments, the width W1 is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the width W1 is <NUM> millimeters. In some embodiments, the thickness of the example bellows member <NUM> is in the range between <NUM> micrometers to <NUM> micrometers. In some embodiments, the thickness of the example bellows member <NUM> is <NUM> micrometers.

In some embodiments, the combined height H1 of the example media isolation chamber assembly <NUM> and the example port assembly <NUM> is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the height H1 is <NUM> millimeters.

In some embodiments, the first example circuit board element <NUM> has a thickness W2. In some embodiments, the thickness W2 is in the range between <NUM> millimeters and <NUM> millimeters. In some embodiments, the thickness W2 is <NUM> millimeter.

Referring now to <FIG>, <FIG>, and <FIG>, an example apparatus <NUM> for sensing pressure and temperature in accordance with various embodiments not covered by the claimed invention. In particular, <FIG> illustrates an example front view of the example apparatus <NUM>. <FIG> illustrates an example cross-sectional view of an example media isolation chamber assembly <NUM> of the example apparatus <NUM> along the cut line A-A' and viewing in the direction of the arrows in <FIG>. <FIG> illustrates an example cross-sectional view of the example media isolation chamber assembly <NUM> of the example apparatus <NUM> along the cut line B-B' and viewing in the direction of the arrows in <FIG>.

Referring now to <FIG>, the example apparatus <NUM> comprises an example header member <NUM>, an example port assembly <NUM>, and an example media isolation chamber assembly <NUM>. In some embodiments, the example header member <NUM> is similar to the example header member <NUM> described above in connection with <FIG> and <FIG>. In some embodiments, the example port assembly <NUM> is similar to the example port assembly <NUM> described above in connection with <FIG> and <FIG>. In some embodiments, the example media isolation chamber assembly <NUM> is similar to the example media isolation chamber assembly <NUM> described above in connection with <FIG> and <FIG>. For example, the example header member <NUM> is secured to the example port assembly <NUM>. Additionally, or alternatively, the example media isolation chamber assembly <NUM> is secured to the example port assembly <NUM>.

Referring now to <FIG> and <FIG>, example cross-sectional views of the example media isolation chamber assembly <NUM> of the example apparatus <NUM> are illustrated.

As shown, the example media isolation chamber assembly <NUM> comprises an example sleeve member <NUM>. In some embodiments, the example sleeve member <NUM> may be in a shape similar to a half-capsule shape that comprises a cylinder-shaped portion and a hemispherical end portion. In some embodiments, the width (which corresponds to a diameter) of the example sleeve member <NUM> is in the range of <NUM> millimeters to <NUM> millimeters. In some embodiments, the width of the example sleeve member <NUM> is <NUM> millimeters. In some embodiments, the thickness of the example sleeve member <NUM> is in the range of <NUM> millimeters to <NUM> millimeters. In some embodiments, the thickness of the example sleeve member <NUM> is <NUM> millimeters.

In some examples, an example sleeve member may comprise one or more additional and/or alternative elements, and/or may be in other shapes/forms. For example, an example sleeve member may be in shapes other than a half-capsule shape, such as, but not limited to, a cube shape, a sphere shape, a prism shape, a cone shape, a pyramid shape, and/or the like. Additionally, or alternatively, one or more measurements of the example sleeve member may be of other value(s).

In some embodiments, the example sleeve member <NUM> comprises at least one media opening <NUM> on its surface. In some embodiments, the media opening(s) of the example sleeve member <NUM> is configured to receive a liquid substance, and the pressure of the liquid substance is to be detected by the example apparatus <NUM>.

In the example shown in <FIG> and <FIG>, the example media isolation chamber assembly <NUM> comprises an example diaphragm member <NUM>. In some embodiments, the example diaphragm member <NUM> is disposed within the example sleeve member <NUM>, and the example sleeve member <NUM> provides an enclosure for the example diaphragm member <NUM>. In some embodiments, the example diaphragm member <NUM> comprises an example inner casing member <NUM>. In some embodiments, the example inner casing member <NUM> is disposed within the example sleeve member <NUM>. In some embodiments, the example inner casing member <NUM> comprises one or more openings on its surface.

In some embodiments, the example inner casing member <NUM> may be in a shape similar to a half-capsule shape that comprises a cylinder-shaped portion and a hemispherical end portion. In some embodiments, the width (which corresponds to a diameter) of the example inner casing member <NUM> is in the range of <NUM> millimeter and <NUM> millimeters. In some embodiments, the width of the example inner casing member <NUM> is <NUM> millimeters. In some embodiments, the thickness of the example inner casing member <NUM> is in the range of <NUM> millimeters to <NUM> millimeters. In some embodiments, the thickness of the example inner casing member <NUM> is <NUM> millimeters.

In some embodiments, the example inner casing member <NUM> may comprise material such as, but not limited to, stainless steel, beryllium copper, phosphor bronze, metal alloys, and/or the like. In some embodiments, the example inner casing member <NUM> may comprise other material(s). In some embodiments, the example inner casing member <NUM> may be formed through, for example but not limited to, a deep drawing process.

In some examples, an example inner casing member may comprise one or more additional and/or alternative elements, and/or may be in other shapes/forms. For example, an example inner casing member may be in shapes other than a half-capsule shape, such as, but not limited to, a cube shape, a sphere shape, a prism shape, a cone shape, a pyramid shape, and/or the like. Additionally, or alternatively, one or more measurements of the example inner casing member may be of other value(s).

In the example shown in <FIG> and <FIG>, an example membrane member <NUM> is disposed on the outer surface of the example inner casing member <NUM>. In some embodiments, the example membrane member <NUM> comprises a membrane that is flexible and deforms when pressure is applied. In some embodiments, the example membrane member <NUM> may comprise material such as, but not limited to, silicon.

In the example shown in <FIG> and <FIG>, the example diaphragm member <NUM> comprises an example outer casing member <NUM>.

In some embodiments, the example outer casing member <NUM> is disposed within the example sleeve member <NUM>. In some embodiments, an edge of the example outer casing member <NUM> is secured to the example membrane member <NUM>. For example, the example outer casing member <NUM> is hermetically sealed to the example membrane member <NUM>,.

In some embodiments, the example outer casing member <NUM> may be in a shape similar to a hollow cylindrical shape. In some embodiments, the width (which corresponds to a diameter) of the example outer casing member <NUM> is in the range of <NUM> millimeters and <NUM> millimeters. In some embodiments, the width of the example outer casing member <NUM> is <NUM> millimeters. In some embodiments, the thickness of the example outer casing member <NUM> is in the range of <NUM> millimeters and <NUM> millimeters. In some embodiments, the thickness of the example outer casing member <NUM> is <NUM> millimeters.

In some embodiments, the example outer casing member <NUM> may comprise material such as, but not limited to, stainless steel, beryllium copper, phosphor bronze, metal alloys, and/or the like. In some embodiments, the example outer casing member <NUM> may comprise other material(s). In some embodiments, the example outer casing member <NUM> may be formed through, for example but not limited to, a deep drawing process.

In some examples, an example outer casing member may comprise one or more additional and/or alternative elements, and/or may be in other shapes/forms. For example, an example outer casing member may be in shapes other than a hollow cylindrical shape, such as, but not limited to, a cube shape, a sphere shape, a prism shape, a cone shape, a pyramid shape, and/or the like. Additionally, or alternatively, one or more measurements of the example outer casing member may be of other value(s).

In the example shown in <FIG> and <FIG>, the example apparatus <NUM> comprises an example circuit board element <NUM>, similar to the first example circuit board element <NUM> described above in connection with <FIG> and <FIG>. In some embodiments, the example circuit board element <NUM> is disposed within the example inner casing member <NUM>, and is secured to an inner surface of the example inner casing member <NUM> through, for example but not limited to, a welding process. In some embodiments, the example circuit board element <NUM> comprises example conductive tracks <NUM> printed on the surface of the example circuit board element <NUM>.

In some embodiments, the example circuit board element <NUM> has a width in the range of <NUM> millimeter to <NUM> millimeters. In some embodiments, the example circuit board element <NUM> has a width of <NUM> millimeters. In some embodiments, the example circuit board element <NUM> has a thickness in the range of <NUM> millimeters to <NUM> millimeters. In some embodiments, the example circuit board element <NUM> has a width of <NUM> millimeter.

In some embodiments, the example inner casing member <NUM> houses or otherwise contains insulator media <NUM>. In some embodiments, the insulator media <NUM> comprises electrically insulating but thermally conductive material. Examples of insulator media <NUM> may include, but not limited to, silicon oil, mineral oil, fluorocarbon, synthetic, and/or the like. As such, the example circuit board element <NUM> is fully submerged in and/or encapsulated by the insulator media <NUM> (such as silicon oil). In some embodiments, the example circuit board element <NUM> is partially submerged in the insulator media <NUM> (such as silicon oil).

In the example shown in <FIG> and <FIG>, the example apparatus <NUM> comprises an example sensing element <NUM>. In some embodiments, the example sensing element <NUM> is electrically coupled and secured to the example circuit board element <NUM>. For example, the example sensing element <NUM> is electrically coupled to the one or more conductive tracks printed on the example circuit board element <NUM>. In some embodiments, the example sensing element <NUM> is fully submerged in and/or encapsulated by the insulator media <NUM> (such as silicon oil). In some embodiments, the example sensing element <NUM> is partially submerged in the insulator media <NUM> (such as silicon oil).

In some examples, the example sensing element <NUM> provides capability to measure both pressure and temperature (for example, a MEMS pressure sensing die having temperature measure options using a Zt diode). In some embodiments, liquid substance (whose pressure is to be measured by the apparatus <NUM>) may enter the cavity between the example sleeve member <NUM> and the example outer casing member <NUM> through the at least one media opening <NUM>, and the liquid substance may be in contact with outer surface of the example membrane member <NUM>. As described above, the example membrane member <NUM> comprises a membrane that is flexible and deforms when pressure is applied. As such, the pressure from the liquid substance is transferred to the example sensing element <NUM> through the example membrane member <NUM> and the example insulator media <NUM>, and the example sensing element <NUM> generates an electrical signal corresponding to the pressure of the liquid substance. Additionally, the temperature of the liquid substance is transferred through the example membrane member <NUM> and the example insulator media <NUM>, and the example sensing element <NUM> generates an electrical signal corresponding to the temperature of the liquid substance.

Referring now to <FIG>, an example circuit diagram <NUM> is illustrated.

In some embodiments, the example circuit diagram <NUM> corresponds to an example circuit that is printed on the first example circuit board element in accordance with various embodiments (for example, the first example circuit board element <NUM> illustrated and described above in connection with <FIG> and <FIG>). In some embodiments, the example circuit diagram <NUM> corresponds to a combined circuit that includes a first circuit printed on the first example circuit board element in accordance with various embodiments (for example, the first example circuit board element <NUM> illustrated and described above in connection with <FIG> and <FIG>) and a second circuit printed on the second example circuit board element in accordance with example embodiments (for example, the second example circuit board element <NUM> illustrated and described above in connection with <FIG> and <FIG>).

For example, as described above, an example pressure sensing element (for example, the example pressure sensing element <NUM> illustrated and described above in connection with <FIG>, <FIG>, <FIG> and/or <FIG>) is electrically coupled to a first circuit board element (for example, the first example circuit board element <NUM> illustrated and described above in connection with <FIG> and <FIG>). In the example circuit diagram <NUM>, the example pressure sensing element is depicted as pressure sensing element <NUM>. In some embodiments, the pressure sensing element <NUM> receives an excitation voltage Vin and is electrically coupled to the ground. In some embodiments, the excitation voltage Vin is within the range of <NUM> V to <NUM> V. In some embodiments, the excitation voltage Vin is <NUM> V. In some embodiments, the pressure sensing element <NUM> generates an electrical signal corresponding to the detected pressure (for example, an electrical voltage that corresponds to the detected pressure).

In some embodiments, the first circuit board element comprises an example signal conditioning element, which is depicted as the signal conditioning element <NUM> in the example circuit diagram <NUM>. As shown in <FIG>, the pressure sensing element <NUM> is electrically coupled to the signal conditioning element <NUM> and provides the electrical signal corresponding to the detected pressure to the signal conditioning element <NUM>.

In some embodiments, the signal conditioning element <NUM> is in the form of an example ASIC as described above. In some embodiments, the signal conditioning element <NUM> receives an excitation voltage Vin and is electrically coupled to the ground. In some embodiments, the excitation voltage Vin is within the range of <NUM> V to <NUM> V. In some embodiments, the excitation voltage Vin is <NUM> V. In some embodiments, the signal conditioning element <NUM> is configured to provide signal conditioning function on the electrical signal received from the pressure sensing element <NUM>, and output an electrical signal Pout that has been conditioned and represents a detected pressure. In some embodiments, the signal conditioning element <NUM> in accordance with various embodiments is an example ASIC. In some embodiments, the example ASIC may include one or more microprocessors electrically coupled to one or more memory units (such as, but not limited to, RAM, ROM, flash memory, and/or the like). In some embodiments, the one or more microprocessors of the example ASIC adjust, manipulate, and/or otherwise condition the electrical signal received from the pressure sensing element <NUM>, and output the adjusted/manipulated/conditioned signal as Pout.

Further, as described above, an example temperature sensing element (for example, the example temperature sensing element <NUM> illustrated and described above in connection with <FIG> and <FIG>) is electrically coupled to a first circuit board element (for example, the first example circuit board element <NUM> illustrated and described above in connection with <FIG> and <FIG>). In the example circuit diagram <NUM>, the example temperature sensing element is depicted as temperature sensing element <NUM>. In some embodiments, the temperature sensing element <NUM> generates an electrical signal corresponding to the detected temperature.

In some embodiments, the first circuit board element comprises an example signal amplifying element, which is depicted as the signal amplifying element <NUM> in the example circuit diagram <NUM>. As shown in <FIG>, the temperature sensing element <NUM> is electrically coupled to the signal amplifying element <NUM> and provides the electrical signal corresponding to the detected temperature to the signal amplifying element <NUM>. For example, the signal amplifying element <NUM> is an example INA. In such embodiments, the signal amplifying element <NUM> comprises three operational amplifiers, where a non-inverting amplifier is connected to each input of a differential amplifier.

In some embodiments, the first circuit board element comprises an example resistor element <NUM>. As shown in <FIG>, the example resistor element <NUM> is electrically coupled to the temperature sensing element <NUM> and is electrically coupled to the signal amplifying element <NUM>. In some embodiments, the example resistor element <NUM> receives an excitation voltage Vin. In some embodiments, the excitation voltage Vin is within the range of <NUM> V to <NUM> V. In some embodiments, the excitation voltage Vin is <NUM> V.

In some embodiments, the temperature coefficient of the example temperature sensing element <NUM> is <NUM> mV/°C. For example, when the detected temperature increases, the voltage across example temperature sensing element <NUM> decreases. When the detected temperature decreases, the voltage across example temperature sensing element <NUM> increases. The differential voltage may further be scaled by the example resistor element <NUM>, so that the voltage across the example temperature sensing element <NUM> is from <NUM> V to <NUM> V when the detected temperature is from -<NUM> to <NUM>. In some embodiments, the signal amplifying element <NUM> further amplifies the output to within the range of <NUM> V to <NUM> V.

In some embodiments, the signal amplifying element <NUM> receives an excitation voltage Vin and is electrically coupled to the ground. In some embodiments, the excitation voltage Vin is within the range of <NUM> V to <NUM> V. In some embodiments, the excitation voltage Vin is <NUM> V. In some embodiments, the signal amplifying element <NUM> is configured to provide signal amplifying function on the electrical signal received from the temperature sensing element <NUM>, and output an electrical signal Tout that has been amplified and represents a detected temperature.

Claim 1:
An apparatus (<NUM>) for sensing pressure and temperature comprising:
a media isolation chamber assembly (<NUM>) comprising a sleeve member (<NUM>) and a bellows member (<NUM>), wherein the bellows member (<NUM>) is disposed in the sleeve member (<NUM>) and houses insulator media;
a first circuit board element (<NUM>) disposed in the bellows member (<NUM>) and encapsulated by the insulator media;
a pressure sensing element (<NUM>) disposed in the bellows member (<NUM>) and electrically coupled to the first circuit board element (<NUM>); and
a temperature sensing element (<NUM>) disposed in a probe portion (<NUM>) of the sleeve member (<NUM>) and electrically coupled to the first circuit board element (<NUM>).