Source: http://www.google.es/patents/US9423664
Timestamp: 2017-11-19 06:40:09
Document Index: 795221106

Matched Legal Cases: ['Application No. 201280023631', 'Application No. 201280023631', 'Application No. 201480022064', 'Application No. 2015032301101560', 'Application No. 201380026428', 'Application No. 14753897', 'Application No. 14753897', 'Application No. 12757877', 'Application No. 12756917', 'Application No. 12758250', 'Application No. 12841714', 'Application No. 13777540', 'Application No. 101108958']

Patente US9423664 - Controlling transitions in optically switchable devices - Google Patentes
This disclosure provides systems, methods, and apparatus for controlling transitions in an optically switchable device. In one aspect, a controller for a tintable window may include a processor, an input for receiving output signals from sensors, and instructions for causing the processor to determine...http://www.google.es/patents/US9423664?utm_source=gb-gplus-sharePatente US9423664 - Controlling transitions in optically switchable devices
Número de publicación US9423664 B2
Número de solicitud US 14/163,026
También publicado como CA2870627A1, CN104321497A, CN104321497B, CN106125444A, EP2841671A1, EP2841671A4, US8705162, US9348192, US20130271812, US20140268287, US20150060648, US20160124283, WO2013158464A1
Número de publicación 14163026, 163026, US 9423664 B2, US 9423664B2, US-B2-9423664, US9423664 B2, US9423664B2
Inventores Stephen C. Brown, Deepika Khowal, Namrata Vora
Cesionario original View, Inc.
Citas de patentes (258), Otras citas (101), Citada por (2), Clasificaciones (25), Eventos legales (3)
US 9423664 B2
1. A method of limiting energy consumption in a facility having at least one tintable window between an interior and exterior of the facility, wherein the level of tinting in the tintable window can be controlled automatically, the method comprising:
(a) receiving output signals from any two or more sensors selected from the group consisting of an exterior photosensor, an interior photosensor, an occupancy sensor, an exterior temperature sensor, and a transmissivity sensor;
(b) determining a level of tint for said tintable window using a relationship between the received output signals and the level of tint, the relationship being based in part on scheduling information for the facility and whether the window is transitioning from a darker tint to a lighter tint or from a lighter tint to a darker tint; and
(c) providing instructions to change the tint of the tintable window to the level of tint determined in (b).
2. The method of claim 1, further comprising applying voltage or current to the tintable window to drive the change in tint pursuant to the instructions provided in (c).
3. The method of claim 1, wherein the relationship used in (b) reduces energy consumption caused by a heating system, a cooling system, and/or lighting in the facility than otherwise would be caused, while providing conditions suitable for occupancy of the facility.
4. The method of claim 1, further comprising receiving an energy or power consumption signal indicating energy or power consumption by a heating system, a cooling system, and/or lighting in the facility, and using said energy or power consumption signal together with the received output signals in (a) to determine the level of tinting for said tintable window.
5. The method of claim 1, wherein the scheduling information comprises time of year and/or time of day information for the facility.
6. The method of claim 1, wherein the scheduling information further comprises information about the geographical facing direction of the tintable window and a latitude and a longitude of the facility.
7. The method of claim 1, wherein the relationship employed in (b) is an expression in which the level of tint is the dependent variable and the output signals are independent variables.
8. The method of claim 7, wherein determining the level of tint for the tintable window includes multiplying each of the two or more output signals by a respective weighting value, the determining further including determining a sum of the products of the multiplications.
9. The method of claim 8, wherein at least one of the weighting values is based on the scheduling information.
10. The method of claim 1, wherein the output signals comprise the output signal from an exterior photosensor, and wherein the relationship employed in (b) requires (i) transitioning from a first lighter tint level to a second darker tint level when the output signal from the exterior photosensor passes a first threshold and (ii) transitioning from the second darker tint level to the first lighter tint level when the output signal from the exterior photosensor passes a second threshold, and wherein the first and second thresholds are different.
11. The method of claim 10, wherein the first threshold is reached at a first value of irradiance and the second threshold is reached at a second value of irradiance, and the first value is greater than the second value.
12. The method of claim 1, wherein the two or more sensors include a transmissivity sensor capable of measuring an amount of light passing through the tintable window.
13. The method of claim 1, wherein the two or more sensors include an exterior photosensor, an interior photosensor and a transmissivity sensor, the transmissivity sensor being capable of determining an amount of light passing through the tintable window based on the output signals from the exterior photosensor and the interior photosensor.
14. A method of controlling at least one tintable window comprising:
(a) receiving an output signal from each of two or more sensors selected from the group consisting of an exterior photosensor, an interior photosensor, an occupancy sensor, an exterior temperature sensor, and a transmissivity sensor;
(b) providing the received two or more output signals to a lookup table in which levels of tint are specified for various combinations of output signal values;
(c) obtaining a level of tint specified for the provided two or more output signals from the lookup table; and
(d) providing instructions to change the tint of the tintable window to the obtained level of tint.
15. A method of limiting energy consumption in a facility having at least one tintable window between an interior and exterior of the facility, wherein the level of tinting in the tintable window can be controlled automatically, the method comprising:
(a) receiving output signals from any two or more sensors selected from the group consisting of an exterior photosensor, an interior photosensor, an occupancy sensor, an exterior temperature sensor, and a transmissivity sensor, wherein the output signals comprise a signal from the exterior photosensor and a signal from the interior photosensor, and;
(b) determining a level of tint for said tintable window using a relationship between the received output signals and the level of tint wherein the relationship is an expression or look up table in which the level of tint is the dependent variable and the signals from the exterior photosensor and the interior photosensor are independent variables, the relationship further being based in part on scheduling information for the facility; and
16. The method of claim 15, wherein the relationship employed in (b) uses scheduling information comprising time of year and/or time of day information for the facility.
17. The method of claim 15, wherein the output signals further comprise a signal from the occupancy sensor, and wherein the relationship employed in (b) further employs the signal from the occupancy sensor.
18. The method of claim 17, wherein the relationship employed in (b) further employs an energy or power consumption signal indicating energy or power consumption by a heating system, a cooling system, and/or lighting in the facility.
19. The method of claim 18, wherein the level of tint determined in (b) reduces energy consumption by a heating system, a cooling system, and/or lighting in the facility while providing conditions suitable for occupancy of the facility.
20. The method of claim 15, wherein the scheduling information further comprises information about the geographical facing direction of the tintable window and a latitude and a longitude of the facility.
21. A controller for a tintable window for a facility having at least one tintable window between an interior and exterior of the facility, the controller comprising:
(a) a processor or control circuit;
(b) at least one input for receiving output signals from two or more sensors selected from the group consisting of an exterior photosensor, an interior photosensor, an occupancy sensor, an exterior temperature sensor, and a transmissivity sensor;
(c) instructions for causing the processor or control circuit to determine a level of tint for said tintable window by using a relationship between the received two or more output signals and the level of tint, the relationship being based in part on scheduling information for the facility, wherein the instructions include instructions for:
providing the received two or more output signals to a lookup table in which levels of tint are specified for various combinations of the two or more output signals, and
obtaining the level of tint specified for the provided output signals from the lookup table; and
(d) at least one output for controlling, directly or indirectly, the level of tint of the tintable window based on the determined level of tint.
22. The controller of claim 21, further comprising a power supply for applying voltage or current to the tintable window to drive the tintable window to the level of tint determined by the instructions.
23. The controller of claim 21, further comprising logic for receiving one or more of the output signals from a building management system, a lighting control panel, or a security system for the facility.
24. The controller of claim 21, further comprising logic for extracting one or more of the output signals from information provided by a building management system, a lighting control panel, or a security system for the facility.
25. The controller of claim 21, further comprising a network interface for communicating with a network containing a building management system for the facility, a lighting control panel for the facility, and/or a security system for the facility.
26. The controller of claim 21, further comprising logic for receiving an energy or power consumption signal indicating energy or power consumption by a heating system, a cooling system, and/or lighting in the facility.
27. The controller of claim 26, wherein the instructions further comprise instructions for using said energy or power consumption signal together with the received output signals in determining the level of tinting for said tintable window.
28. The controller of claim 21, wherein the scheduling information comprises time of year and/or time of day information.
29. The controller of claim 21, wherein the scheduling information comprises information about the geographical facing direction of the tintable window and a latitude and a longitude of the facility.
30. A controller for a tintable window for a facility having at least one tintable window between an interior and exterior of the facility, the controller comprising:
(c) instructions for causing the processor or control circuit to determine a level of tint for said tintable window by using a relationship between the received two or more output signals and the level of tint, wherein the relationship (i) is an expression in which the level of tint is the dependent variable and the output signals are independent variables, and (ii) is based in part on scheduling information for the facility, the instructions including instructions for multiplying each of the two or more output signals by a respective weighting value, and the determining further including determining a sum of the products of the multiplications; and
31. The controller of claim 30, wherein at least one of the weighting values is based on the scheduling information.
This application is a continuation of U.S. patent application Ser. No. 13/449,235, by Brown et al., filed on Apr. 17, 2012 and entitled CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES, which is incorporated herein by reference in its entirety and for all purposes. Also, this application is related to U.S. patent application Ser. No. 13/049,756, naming Brown et al. as inventors, filed on Mar. 16, 2011 and entitled MULTIPURPOSE CONTROLLER FOR MULTISTATE WINDOWS, to U.S. patent application Ser. No. 13/449,248, naming Brown as inventor, filed on Apr. 17, 2012 and entitled CONTROLLER FOR OPTICALLY SWITCHABLE WINDOWS, and to U.S. patent application Ser. No. 13/449,251, naming Brown as inventor, filed on Apr. 17, 2012 and entitled CONTROLLER FOR OPTICALLY-SWITCHABLE WINDOWS, all of which applications are incorporated herein by reference in their entireties and for all purposes.
Electrochromic devices having distinct layers as described can be fabricated as all solid state devices and/or all inorganic devices having low defectivity. Such devices and methods of fabricating them are described in more detail in U.S. patent application, Ser. No. 12/645,111, entitled, “Fabrication of Low-Defectivity Electrochromic Devices,” filed on Dec. 22, 2009 and naming Mark Kozlowski et al. as inventors, and in U.S. patent application Ser. No. 12/645,159, entitled, “Electrochromic Devices,” filed on Dec. 22, 2009 and naming Zhongchun Wang et al. as inventors, both of which are incorporated by reference herein for all purposes. It should be understood, however, that any one or more of the layers in the stack may contain some amount of organic material. The same can be said for liquids that may be present in one or more layers in small amounts. It should also be understood that solid state material may be deposited or otherwise formed by processes employing liquid components such as certain processes employing sol-gels or chemical vapor deposition.
Generally, the colorization (or change in any optical property—e.g., absorbance, reflectance, and transmittance) of the electrochromic material is caused by reversible ion insertion into the material (e.g., intercalation) and a corresponding injection of a charge balancing electron. Typically some fraction of the ions responsible for the optical transition is irreversibly bound up in the electrochromic material. Some or all of the irreversibly bound ions are used to compensate “blind charge” in the material. In most electrochromic materials, suitable ions include lithium ions (Li+) and hydrogen ions (H+) (that is, protons). In some cases, however, other ions will be suitable. In various embodiments, lithium ions are used to produce the electrochromic phenomena. Intercalation of lithium ions into tungsten oxide (WO3-y (0<y≦˜0.3)) causes the tungsten oxide to change from transparent (bleached state) to blue (colored state).
FIG. 4 depicts a block diagram of a window controller. FIG. 4 is a simplified block diagram of a window controller, and more detail regarding window controllers can be found in related U.S. patent application Ser. No. 13/449,248 naming Brown as inventor, titled “CONTROLLER FOR OPTICALLY SWITCHABLE WINDOWS” and filed on 17 Apr. 2012, and in U.S. patent application Ser. No. 13/449,251 naming Brown as inventor, titled “CONTROLLER FOR DRIVING OPTICAL TRANSITIONS IN MULTIPLE WINDOW TYPES” and filed on 17 Apr. 2012, both of which are incorporated herein by reference in their entireties and for all purposes. As shown in FIG. 4, the window controller 450 includes a microcontroller 455, a pulse width modulator (PWM) 460, a signal conditioning module 465, and a smart logic module 470.
Occupancy sensor 530 is a device able to detect when a person is in room 500. Occupancy sensors are usually motion sensors; when occupancy sensor 530 detects motion, it is assumed that a person in room 500, and when occupancy sensor 530 does not detect motion, it is assumed that a person in not in room 500. Occupancy sensors may be set so that it is assumed that a person is in a room for a period of time after the last motion was detected; this can account for a person sitting at a desk and not moving very much, but still being in the room. In some embodiments, the occupancy sensor may be a motion sensor used to control the lights lighting the room. Occupancy sensor 530 can use, for example, infrared (IR) technology, acoustic technology, or a combination of the two. The field of view of occupancy sensor 530 may be selected/adjusted so that it responds to motion in room 500 and not to motion outside of room 500 (e.g., motion outside of the building housing room 500 or motion in a hallway of the building housing room 500).
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Clasificación internacional G02F1/133, E06B9/24, G01N21/59, G02F1/03, G01K13/00, G01J1/42, G01J1/02, G02F1/163, G02B26/00, G02F1/15, G02F1/153
Clasificación cooperativa Y02B80/50, G01J1/4204, E06B2009/2464, G01J1/0238, G02F1/13318, G02F1/1523, G02F1/1533, G01J2001/4266, E06B9/24, G02F1/163, G01K13/00, G02F1/15, G01N21/59, G01J1/4228