Patent Publication Number: US-2021164203-A1

Title: Foot actuated contactless electronically controlled device

Description:
RELATED APPLICATIONS 
     The present application claims the benefit of priority of U.S. Provisional Patent application No. 62/735,055, filed Sep. 22, 2018, entitled “FOOT ACTUATED ELECTRONIC FLOW CONTROL SYSTEM FOR FAUCET” 
    
    
     FIELD OF INVENTION 
     The present invention relates to remotely controlled flow control valve, particularly for turning the faucet or shower water flow on and off by the motion of the foot or lower body of the user. The assembly includes at least one contactless sensor and at least one electromechanically actuated valve. The assembly optionally includes a pre-programmed electronic board for the logical control of the valve. 
     PRIOR ARTS 
     U.S. Pat. No. 7,997,301B2 Aug. 16, 2011 Spout assembly for an electronic faucet, U.S. Pat. No. 7,627,909B2 Aug. 12, 2009 Faucet sensor mounting assembly, U.S. Pat. No. 7,174,577B2 Feb. 13, 2007 Automatic proximity faucet, U.S. Pat. No. 7,150,293B2 Dec. 19, 2006 Multi mode hands free automatic faucet, U.S. Pat. No. 6,513,787B1 Feb. 4, 2003 Touchless fluid supply interface and apparatus, US20100071126A1 Mar. 25, 2010 Faucet controlled in a contactless manner, US20090100593A1 Apr. 23, 2009 Automatic hand washing system, US20080283786A1 Nov. 20, 2008 Infrared retrofit faucet controller, EP1019791B1 Dec. 6, 2002 Water faucet with touchless control, EP0921238A1 Sep. 6, 1999 Electrically controlled water tap, US2014/0156112 Jun. 5, 2014 Hands-free power tailgate system and method of controlling the same, U.S. Pat. No. 9,470,033 Oct. 18, 2016 System and method for controlling vehicle access component, U.S. Ser. No. 10/423,241 Oct. 24, 2019 Defining operating areas for virtual reality system using sensor-equipped operating surfaces. 
     DESCRIPTION 
     Many contactless control valves for faucets have been in use for many years and there are many prior arts. The prior arts include contactless switches/sensors mounted on the faucet and hand or any object waved by the hand in front of the sensor actuates the valve and there are also foot pedal operated valves to control the flow. However, for example if the user wants to continue scrubbing an object without the flow, the current prior arts require that the hand or the object is moved away from the sensor, which is not desirable if the object is large or if the soap or dirt is not desired to fall on other objects in the sink. In the case of the mechanical foot pedal operated valves, the foot has to press a spring loaded pedal or stand on it, which is not a natural posture. The current invention provides a better solution in which the sensor is mounted away from the faucet and below the faucet and the valve is actuated by the motion of the foot or the lower body, such as a leg. The foot motion can actuate more than one valve including the automatic contactless soap dispenser and a common valve for hot and cold water. The advantage with the current invention is that the sensor and the valve can be adopted to any faucet including the mechanically operated faucets and without disturbing the faucet itself and without adding on to the faucet. It requires only adaptation of the existing pipes with some new pipes or plumbing below the sink. The sensors are below the faucet and attached to the frame or cabinet door. The valve is actuated by the motion of the foot or the leg. A pre-programmed electronic control unit can automatically actuate the electromechanical valve that has stayed off for more than a pre-determined period of time and after detecting a pre-determined number of stimuli and it can also deactivate by detecting a single stimuli and reactivate the electromechanical valve with another single stimuli as long as the stimuli is on and if the reactivation occurred within a pre-determined period of time. A second sensor mounted within a pre-determined distance from the first sensor can actuated an automatic soap dispenser as long as the stimuli is on. The electromechanical valve is operated by a DC power supply, which can be either a set of batteries or directly connected to AC power outlet. The control valve assembly may include a manual bypass valve to over ride the shut position of the electromechanical valve in case power supply is disrupted. The electromechanical valve assembly receives the single inlet water supply coming from the mixer of hot and cold water or just cold water as the original water supply system consists of and the water flows through the electromechanical valve assembly and has an outlet that is connected to the faucet. There can be multiple solenoid valves to vary the flow rate or a single valve to regulate the flow rate. The sensor can be a camera, active or a passive IR sensor, optical sensor, capacitor and the system can also vary the flow rate depending on the signal strength and position of the stimulating object, such as a foot or lower body&#39;s position or motion, including the speed at which the object moves. The flow rate can be varied by the number of solenoid valves actuated or how much a valve is opened. The system can also be voice actuated and recognize the words such as MORE/LESS/SOAP/WATER/STOP/START, etc. A manually operated valve is connected between the inlet and outlet to bypass the electromechanical valve to manually turn the valve on in case the power supply to the electromechanical valve is interrupted. 
     The advantage with the embodiment is that while the hands are busy cleaning or washing any object and if it is desired to momentarily stop the water, there is no need for interruption of action the hands are performing or moving the hands just to stop the water. Instead of hand the foot or the lower body can be moved to stop and start the water again. The embodiment provides a safe and hygienic faucet system to the health practitioners, as they do not have to touch the faucet or wave hand to open the faucet valve. The embodiment disclosed is guaranteed to save more water than the prior arts. The system can not only control water, but also disinfectants and other medically necessary fluids in a medical environment. Therefore, the embodiment is better for the environment and saves precious water from being wasted and it saves money and reduces carbon foot print in the form of reduced amount of energy required to pump less amount of water. It is roughly estimated that the embodiment disclosed when used efficiently reduces water approximately 10% or more. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of the sink assembly  100  having the automatic faucet, plumbing, the sensor mounted at the bottom of the sink and showing position of the left foot when the valve is on. 
         FIG. 2  is the side view of the  FIG. 1  as viewed from right. 
         FIG. 3  is the rear view of the  FIG. 1 . 
         FIG. 4  is the front view of the  FIG. 1  with the foot removed. 
         FIG. 5  is a perspective view of the sink assembly  200  having the automatic faucet, cabinet, and the sensor mounted on the cabinet door. 
         FIG. 6  is a perspective view as viewed from the bottom of the sink assembly  220  having the automatic faucet, cabinet, and the sensor recessed inside the cabinet door. 
         FIG. 7  is the closeup view of the sensors and the cabinet door and the symbolic waves of the signal. 
         FIG. 8  is the side of the sink assembly  220  shown in  FIG. 6 . 
         FIG. 9  is the front sectional vie of the  FIG. 8 . 
         FIG. 10  shows close up view of the cut out in the frame/door for the sensors in sink assembly  220 . 
         FIG. 11  shows sensors for water and soap emitting signals at different angles to one another. 
         FIG. 12  is a perspective view of pressure sensor mat  410  on the floor with the feet on the mats  FIG. 13  shows  FIG. 12  as viewed from the bottom. 
         FIG. 14  shows view of the sensor mats  410  attached to the floor. 
         FIG. 15  is the detailed schematic view of the automatic valve assembly  300 . 
         FIG. 16  is the detailed schematic view of the automatic valve assembly  300  having multiple control valves. 
         FIG. 16 a    shows side view of a sink assembly having a post in the front. 
         FIG. 16 b    shows front view of  FIG. 16 a    with the post offset to one side. 
         FIG. 16C  Shows variation of the post having an offset base. 
         FIG. 17  shows the flow chart for the sink assembly having just one electromechanical valve for the water. 
         FIG. 18  shows the flow chart for the sink assembly having more than one electromechanical valve for the water. 
         FIG. 19  shows the flow chart for controlling the soap pump. 
         FIG. 20  shows flow chart for voice command controlling the automatic faucet and soap dispenser in sink assembly. 
         FIG. 21  shows perspective view of the mechanical assembly with the electromechanical valve  312  the manual bypass valve  134  having a tool pocket  133 . 
         FIG. 22  shows top of the  FIG. 21 . 
         FIG. 23  shows from view of the  FIG. 21 . 
         FIG. 24  shows the perspective view of the integrated valve assembly  310   a    FIG. 25  shows side view of the  FIG. 24 . 
         FIG. 26  shows top view of the  FIG. 25 . 
         FIG. 27 a    shows a perspective view of a mat assembly having a sensor 
         FIG. 27 b    shows top of the mat assembly 
         FIG. 27 c    shows sectional view of the mat, sensor, and the wire harness 
     
    
    
     DETAILED DESCRIPTION 
     With reference to the prior arts for the automatic faucets, the sensors are mounted on the spout of the faucet, above the sink and actuated by the touch or motion of a hand or motion of the upper body. Some prior arts have mechanical actuators at the ground level actuated by the foot. 
     The embodiments described here have contactless sensors mounted below the top level of the sink and actuated by the foot or the lower body. As such, in the preferred disclosed embodiment, the hand is completely free of requiring to actuate the sensor, irrespective of the type of the sensor or location of the sensor. The contactless system can actuate the faucet valve ON or OFF by the motion of the lower body and foot/leg in particular. In another embodiment the sensor with the electronic controller unit can vary the flow rate of the water depending on the stimuli and signal strength of the sensor. For example, in a light sensing sensor, the strength of the signal depends on the amount of light received by the receiver reflected from reflecting surface, which I turn can actuate the appropriate valve to vary the flow rate. The reflecting surface may be immovably attached to the floor or may be a floor mat having a reflective surface. The stimuli in this case may the foot blocking the light either fully or partially. Two light sensors may be used to actuate a hot and a cold-water valve depending on which sensor is blocked by the foot. Also, a logic can be adopted to actuate either just the cold water or the hot water valve. When the signals to both the valves are blocked, both the valves may be opened to get warm water. The principle of operation of a light sensing switch or a sensor is commonly known to anyone skilled in the art of switches and electronic controllers. Therefore, detailed description of the light sensing sensor or the logic is not explained in detail. An automatic soap dispenser can also be integrated into the electronic controller unit and the mechanical assembly. The Automatic faucet system can also have the ability to qualify the amount of water savings per pre-determined time period and communicate with the user. The automatic faucet can also be actuated by the sound such as a voice command, in which case the sound sensor is preferably mounted at a suitable height such as on the top of the sink or the in spout. 
     With reference to embodiment shown in  FIGS. 1 through 4 , the sink assembly  100  has an upper section U and a lower section U, as shown in  FIG. 4 . and consists of at least one faucet spout  104  for water, at least one handle  1  to manually regulate the water, sink  110  and at least one wireless signal generator and a wireless signal receiver (generator and receiver can be a single and integrated unit) known as sensor  162  such as for example an Infrared, light, or sonar. The sensor is fitted below the sink top  114  to the sink bottom  112  or to the lower face of the sink top in the upper section, and adopted to emitting wireless waves preferably downward toward the floor  199 , a plumbing system  120 , and a controller assembly  300  in the midsection that includes a portion of the upper and a portion of lower sections. The sensor attached to the sink is in the upper section. Water spout  104 , manual handle  106   a  are above the sink top  114  and adopted to sit on the top of the sink. 
     The plumbing system  120  disposed underneath the sink consists of the water supply to the spout  104  through inlet  139  and supply is in series through at least one manual valve  106   a  and at least one electromechanical valve  312 . A bypass valve  134 , parallel to the electro mechanical valve  312  communicating with the electronic controller  160  for power, is provided to bypass the electromechanical valve  312 . A bypass valve  134  is provided in case there is any electrical problem, which by default keeps the electromechanical valve  312  closed. The mechanical valve  134  shown in  FIG. 4  has a handle  137  attached to the valve for opening and closing the manual valve as needed. Anyone skilled in the art of plumbing will know the inlet and outlets to connect to the faucet from the water supply line and therefore detail of the plumbing is not explained. Alternatively, the water inlet to the electromechanical valve can be connected directly from the main water supply line without the manual valve  106 , handle  106  is a lever or a stem for opening and closing the manual valve adopted to the sink assembly in the top. An optional soap spout  108  is also shown in the sink assembly  100 . 
       FIGS. 5 through 9  show sink assembly  200  and  220  having a cabinet  212  where in the sink  110  is resting on it and  212  extending from top to bottom portion with at least one door in the front. The sink assembly  200  and  220  are same as the sink assembly  100  and have all the elements described for  100  except that  200  and  220  have at least one sensor  162  attached at lower section of the cabinet or the door as shown in  FIG. 5 . The sensor in this instance is within 12 inches from the floor and preferably within a proximity of the human foot when standing in front of the faucet.  FIGS. 6 through 9  show the sensor  162  installed in a recess in the door in the proximity of the floor. The sensor may be positioned at an angle to emit the wireless signal away from the door and have a wider field of view. The area on which signal may fall on the floor may be less than 9 square inches. Therefore, the foot that interrupts the signal should be within this area, specifically marked on the floor with some form of marking on through visible light. The sensor may also be attached to the frame of the cabinet. The sensor  162  is located in the cabinet or the door in the lower section U of the sink assemblies  200  and  220 , shown in  FIGS. 6 through 9 . The sensor may be rectangular or cylindrical in shape that can be glued on the surface of the cabinet or the door, shown in  FIGS. 5 and 11  or to the bottom of the sink. It can also be clamped using fasteners. Cylindrical sensors are easily inserted into the hole in the cabinet or door, as shown in  FIG. 7 . Aforementioned cabinet  210  consists of a frame supporting the sink  110  and at least one cabinet door  212 . 
       FIGS. 12 through 14  show another embodiment  240  consisting of the sink assembly described for embodiments  200  and  220 , but has pressure sensor switches in the floor mat  410  resting on the floor to turn or off the faucet in response to application of weight or someone standing on the sensor. All the elements described for the embodiments  100 ,  200 , and  220  are common to the embodiment  240 , except for the sensors  162  and  164 . Instead of wireless sensors, the electromechanical valve  312  is actuated when a person stands on the mat  410  and turned off automatically after a pre-determined period of time or when the foot  172  or human weight is lifted off the mat or whichever occurs first. Water flow rate in the faucet can be regulated by having more than one pressure sensor in the mat and the user would just move the foot to a new location within the marked area on the mat  410  or lean forward or backward to reduce or increase weight/pressure as a stimuli to actuate the appropriate electromechanical valve or valves. For example, the area marked  414  on the mat  410 , shown in  FIG. 14 , may be for high flow rate and area  412  may be for lower flow rate. The programmable controller can be programmed to turn on the electromechanical valve at the first instance of pressure and reduce at the second instance irrespective of where the foot  172  or  174  is on the mat. The sensors in the mat are connected to the controller  300  either by means of a wire harness  166  or wirelessly. A soap dispenser may also be actuated by a similar mat by the other foot  174 , as shown in  FIG. 14 . The sensor in the mat  410  can be embedded on to the mat and it can be a mechanical switch in the form of a spring actuated metal strip. 
       FIG. 16 a    and  FIG. 16 b    illustrate the sink assembly  100  having a post  176  in the front of the sink assembly and is attached to the sink at the top and the lower end, the base  178  is resting on the floor  199 . At least one sensor  162  is attached to the post  176  is attached to the post  176  at a height closer to the floor  199 . The post  176  is slightly offset by a distance O from the centerline CL of the faucet spout and the objective is to keep the sensor or the signal right above the foot  172  from an ergonomic point of view. The post  176  is adjustable in height so as to attach the post  176  immovably between the sink and the floor and can be attached to any sink assembly as a retrofit assembly with the sensor  164  attached to it. The height of the post can be adjusted by many different ways that is commonly known. For example, top end of the post can have a threaded part that extends or retracts as it is turned in one direction or the other. Alternatively, it can have a telescoping type of columns that can be extended or retracted. The post may be attached to the bottom of the counter top of any sink assembly.  FIG. 16 c    shows side view of the post  176  having the base  178  offset from the centerline CL of the post. The base  178  is offset inward to be slightly away from the toe of the foot, to prevent the foot from contact or hitting the post. The sensor  164  is in the section of the post that is transitioning from the vertical section to the offset base. The location of the sensor in the transitional section helps angularity of the signal as well as protects it from being accidentally hit by the foot. The sensor  164  is recessed from the outside surface of the post. There can be lip above the sensor to protect and many other forms can be incorporated to protect it from the external elements. 
     Controller assembly  300  shown in  FIG. 16 , has an electronic controller unit  160  that communicates with at least one electromechanical valve  312  to turn on and off the flow of water. The wire harness  168  and  170  from at least one sensor  162  and power from an external power supply  170  communicate with the electronic controller unit  160 . The controller assembly  300  shown in  FIG. 15  and  FIG. 16  may also have an electrically operated pump  320  to dispense soap through the soap spout  108 . However, having a pump for dispensing soap is optional. 
     The controller assembly  302  shown in  FIG. 16  has identical components as described above for  FIG. 15 , but has at least two electromechanical valves  312  and  314  and each having approximately half the maximum flow rate when both the valves are open. The intent of having more than one valve is to vary the water flow rate depending on the requirement by the user and in response to the stimuli from at least one sensor  162 . In order to prevent back flow of water into the electromechanical valve that is closed, a non-return valve  318  one each on outlet from the electromechanical valve is incorporated as shown in  FIG. 16 . A stepper motor controlled valve can also be used in lieu of multiple electromechanical valves. The stimuli for varying the flow rate would be the position of the foot/lower body and the signal value received in response to the stimuli. In a variable flow control system, the wireless signal can be emitted at wider angle and the receiver may receive the signal strength proportional to the stimuli, which is proportional to the exposure of the object and is of the order of a human foot, location or speed of motion of the foot or the lower body. An example would be how much of light is blocked by the foot for the receiver to receive the reflected signal or how much of IR signal is received. A second signal emitter and the receiver  164  is actuated in a similar way to  162  to dispense the soap as needed. The field of view of the sensor is predetermined and is at an angle in the vertical plane. 
     The signal emitter may be integrated with an LED (light emitting diode) to indicate to the user the area on the floor where the signal is to help place the foot to turn on/off the water. 
     The faucet spout has at least one red LED light  105   a  and at least one green LED light  105   b  to visually indicate high and low flow rates respectively. Longer the time the Green light is on during the usage, more saving is the water. High flow is indicated when the flow rate is maximum and green light when the flow rate is reduced by the stimuli. 
     The electronic controller unit  160  is programmable to keep the valve open to a pre-determined period of time once the valve is triggered to open and may have a clock to log the usage and interface wirelessly with an external electronic device, such as a phone or computer or store on the internet. The electronic controller unit  160  is programmed to disperse a pre-determined quantity of soap each time the user stimulates the sensor. The soap dispenser has its own sensor and is separate from the sensor for the water and is also triggered by the motion of the lower body, such as the foot. The sensors for water and soap dispensation may be integral but emit signals at different angles from one another, as shown in  FIG. 11 . The electronic controller unit  160  processes the input parameters received from at least one sensor and compares it with the pre-determined parameters, as shown in the flow charts  FIG. 17 or 18 or 19 , and sends signal to operate the applicable valve or the pump for a pre-determined length of time. 
     The purpose of keeping the electromechanical valve open only for a pre-determined period of time (like 60 or 180 seconds) at a time is to prevent wasting water if the valve is actuated to open position for other reasons than human interaction. When the valve is automatically shut closed after a pre-determined time or in response to stimuli, the valve is opened again by moving the lower body or the foot away from the sensor or through a predetermined distance or direction. The valve can also stay open as long as the signal is interrupted. The interruption of the signal means the IR is interrupted by the foot either in an active IR sensor or a passive sensor. In an active IR sensor, the emitter and the receiver are within the same sensor assembly and the foot reflects the IR light and triggers the sensor. 
       FIGS. 24 through 26  show the mechanical valve  134  having a pocket for receiving a special tool to turn on the valve on or off. As shown in Figures, the tool packet as a hole which is partially circular having a straight segment for receiving a male tool that matches the shape of the hole. The purpose of the special tool is to operate the bypass valve and prevent the valve from being turned on 100% of the time by the user, particularly when the embodiment is installed for saving the water consumption.  FIGS. 26 through 25  show a unique valve assembly  310   a , having an integral valve body  316  in which first section has a mechanical bypass valve  134  and the second section has a body of at least one electromechanical valve  312 . The electromechanical valve has a solenoid or a stepper motor  311  to actuate the electromechanical to on/off position in response to the command received from the controller unit  160 . The mechanical bypass valve  134  may also have a special pocket  133 . The controller unit  160  may also be mounted on top of the solenoid. 
       FIG. 26 a  through 26 c    show another embodiment  415  having a floor mat assembly  416  in which a detachable sensor  162  is embedded into the floor mat  416 , and a sensor window  418  through which the wireless signal, infrared light for example, is emitted upward and is interrupted or reflected by the foot, when a foot is over the sensor (window). The window may be a cut out on the top side of the mat with a countersink or a recess for inserting the sensor. The sensor  162  has a wire harness  168  to receive power from the controller unit and transmit the signal to the controller unit to actuate a device or a solenoid valve  312  to turn on and off the water flow to the faucet valve or actuate a electromechanical device. The device may be a electromechanical valve or a calling bell for example. The sensor  162  may be a battery-operated sensor having a wireless transmitter, such as a Bluetooth transmitter, to transmit the stimuli/trigger wirelessly to a wireless receiver in the controller unit  160  which in turn operates the electromechanical valve (solenoid valve) or a mechanical device. The blue tooth transmitter may be integral with the sensor or separate from the sensor but connected to each other through wires. The sensor in this embodiment is emitting wireless signal  166  upward toward the ceiling. The wireless signal  163  is interrupted by the foot when the foot is over the sensor. As such, the foot has to be in a very specific area of the floor mat, and in the invention disclosed here, the foot has to be over the sensor or in the path of the IR signal that get reflected or interrupted for the sensor to trigger the sensor or foot is in the close proximity of the sensor. The interruption of the signal  163  by the foot is the stimuli and the solenoid valve opens for the flow of water for a pre-determined period of time. The water flow is cut off by the solenoid (electromechanical valve) when the foot moves away from the window  418 . The size of the window may be about ¼ inch to an inch in diameter. The floor mat  416  is preferably made of water proof and softer material and may be about approximately 1.5 feet by 1.5 feet and the thickness depends on the size of the sensor, which may range from ¼ inch to an inch or so. The thickness of the floor mat is slightly thicker than the thickness of the sensor  162 . The sensor window  418  may be just a cut out in the floor mat  416  or may have a scratch resistant glass as a cover to protect the sensor  162 . The detachable sensor  162  provides for interchangeability of the floor mat wherein differently designed floor mats may be used. The floor mat may have a design or engraving or printing on the top, as shown in  FIG. 27 b   . The design may be a picture or a word. The wire harness  168  is connected to the controller unit  160  through a detachable connector  168 . The floor mat is similar to any normal floor mat used in kitchens and bathrooms, except this mat has sensor  162  installed into the floor mat. 
     The sensor  162  is not limited to Infrared, light emitting, motion sensing, temperature or proximity sensors. A pressure actuated switch, such as pressure sensor in a floor mat can also be used. The contactless sensor  164  and the electronic controller unit  300  may also be clamped to the drain pipe  180  underneath the sink. The stimuli to the sensors is not limited to moving the foot, or shifting weight, but can be other forms, such as moving sideways or moving the knees. 
     It is to be understood that the terminology which has been used is intended to be in the nature of words of description rather than of limitation. While there have been described herein, exemplary embodiments, other modifications shall be apparent to those skilled in the art from the teachings herein and, it is, therefore, desired to be secured in the appended claims all such modifications as fall within the true spirit and scope of the described and contemplated embodiments. The words solenoid valve, solenoid, and electromechanical are interchangeably used to describe a valve operated by a solenoid to turn on and off the flow through the plumbing, in which the solenoid valve is in series in a plumbing having an inlet from the main source and connected to a faucet. 
     LIST OF ELEMENTS 
     
         
           100  Sink assembly 
           104  Faucet spout 
           105   a  Green light 
           105   b  Red light 
           106   a  handle  1   
           106   b  Handle  2   
           108  Soap spout 
           109  Soap dispenser 
           110  Sink 
           112  Bottom-Sink 
           114  Top-sink 
           115  Counter top bottom 
           120  Plumbing assembly 
           122  water inlet to  106   a    
           126  Water inlet to  106   b    
           130  Hot and cold water union 
           132  inlet to bypass valve  134   
           133  Tool pocket 
           134  Manual bypass valve 
           135  Tool boss 
           136  outlet from bypass valve 
           137  Manual valve handle 
           138  Water inlet to valve assembly  310   
           139  Water inlet to faucet spout 
           144  Soap bottle 
           146  Soap inlet to soap pump  320   
           148  Soap outlet to soap spout  108   
           160  Electronic control unit 
           162  Sensor  1   
           163  Wireless signal  1   
           164  Sensor  2   
           165  Wireless signal  2   
           166  Signal wire harness from the sensors for water regulation 
           167  Signal wire harness from the sensor for soap 
           168  Wire harness from the sensors 
           172  Right foot 
           174  Left Foot 
           176  Post 
           178  Base of the post 
           180  Drain pipe 
           199  Floor 
           200  Sink assembly with the cabinet 
           210  Cabinet 
           212  Cabinet Door 
           216  Cutout (Recess in the door/cabinet) 
           300  Controller unit 
           308  Wire harness to the valve ( 1  and  2 ) 
           310  Mechanical assembly 
           310   a  Integrated valves assembly 
           311  Solenoid/Motor 
           312  Electromechanical valve  1   
           314  Electromechanical valve  2   
           316  Valve body 
           320  Pump 
           322  Wire harness to the pump  320   
           402  Microphone/Sound signal receiver 
           410  Pressure sensing mat 
           412  High pressure mat 
           414  Low pressure mat 
           415  Mat assembly 
           416  Floor mat 
           418  Sensor window 
         A Angular width of the wireless signal 
         U Upper section of the sink assembly 
         L Lower section of the sink assembly