Sensor device measurements adaptive to HVAC activity
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G08B-017/10
G08B-017/11
G08B-027/00
출원번호
US-0538630
(2014-11-11)
등록번호
US-8981950
(2015-03-17)
발명자
/ 주소
Kates, Lawrence
출원인 / 주소
Google Inc.
대리인 / 주소
Kilpatrick Townsend & Stockton LLP
인용정보
피인용 횟수 :
5인용 특허 :
221
초록▼
Various devices, systems, and methods may be presented. A sensor unit may be presented that includes a housing and a chamber arranged within the housing. The sensor unit may include a controller arranged within the housing. The controller may receive information from an HVAC (heating ventilation and
Various devices, systems, and methods may be presented. A sensor unit may be presented that includes a housing and a chamber arranged within the housing. The sensor unit may include a controller arranged within the housing. The controller may receive information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicative of operation of the HVAC system. The controller may determine an effect of the HVAC system on measurements made by the sensor using the information from the HVAC system.
대표청구항▼
1. A device, comprising: a housing;a sensor arranged within the housing and configured to make measurements;a controller arranged within the housing, the controller configured to: receive information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicativ
1. A device, comprising: a housing;a sensor arranged within the housing and configured to make measurements;a controller arranged within the housing, the controller configured to: receive information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicative of operation of the HVAC system; anddetermine an effect of the HVAC system on measurements made by the sensor using the information from the HVAC system. 2. The device of claim 1, wherein the controller being configured to determine the effect of the HVAC system on measurements made the sensor comprises the controller being configured to adjust a threshold value based on the determined effect. 3. The device of claim 2, wherein the controller is further configured to compare the adjusted threshold value with measurements made by the sensor. 4. The device of claim 3, wherein the controller is further configured to: determine one or more measurements made by the sensor are above the adjusted threshold value; andin response to determining the one or more measurements made by the sensor are above the adjusted threshold value, output an indication of an alarm condition. 5. The device of claim 1, wherein the information from the HVAC system is indicative of whether the HVAC system is on or off. 6. The device of claim 1, wherein the controller being configured to determine the effect of the HVAC system on measurements made by the sensor comprises using an adaptive algorithm to determine the effect of the HVAC system on measurements made by the sensor using the information from the HVAC system. 7. The device of claim 1, further comprising: a smoke chamber arranged within the housing and configured to receive air from outside of the housing of the device; andan emitter arranged within the housing and configured to emit electromagnetic radiation into the smoke chamber. 8. The device of claim 7, wherein the sensor is configured to measure a scattered portion of the electromagnetic radiation emitted by the emitter into the smoke chamber. 9. A method for controlling sensor sensitivity, comprising: measuring an environmental characteristic;receiving information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicative of operation of the HVAC system;adjusting a threshold value at least partially based on the information from the HVAC system; andcomparing a measurement of the environmental characteristic with the adjusted threshold value. 10. The method for controlling sensor sensitivity of claim 9, further comprising: listening to a radio frequency channel to determine the radio frequency channel is not in use by another device; andtransmitting, via the radio frequency channel, communication packets that each comprise an address that distinguishes a sensor unit from other sensor units of a wireless sensor system. 11. The method for controlling sensor sensitivity of claim 9, further comprising: readjusting the threshold value following an airflow pattern adjusting to a state of the HVAC system indicated in the information received from the HVAC system. 12. The method for controlling sensor sensitivity of claim 9, further comprising: adjusting a brightness level of electromagnetic radiation at least partially based on the adjusted threshold value, wherein measuring the environmental characteristic comprises: emitting the electromagnetic radiation into a smoke chamber, the smoke chamber configured to receive air; andmeasuring a scattered portion of the electromagnetic radiation in the smoke chamber. 13. The method for controlling sensor sensitivity of claim 9, further comprising: measuring a signal strength of wireless communications received from a repeater; androuting wireless transmission of the measured environmental characteristic based on the signal strength. 14. The method for controlling sensor sensitivity of claim 9, further comprising: wirelessly communicating information indicative of the measured environmental characteristic to a remote electronic device via a wireless transceiver using a spread spectrum technique. 15. The method for controlling sensor sensitivity of claim 14, wherein wirelessly communicating the information indicative of the measured environmental characteristic comprises encrypting the information indicative of the measured environmental characteristic and the information indicative of the measured environmental characteristic is transmitted unit a handshaking acknowledgement is received. 16. An apparatus, comprising: means for emitting electromagnetic radiation into a smoke chamber;means for measuring an amount of smoke based on the means for emitting electromagnetic radiation into the smoke chamber;means for receiving information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicative of operation of the HVAC system;means for adjusting a threshold value at least partially based on the information from the HVAC system, wherein the threshold value is used for evaluating the amount of smoke; andmeans for comparing a measurement of the amount of smoke with the adjusted threshold value. 17. The apparatus of claim 16, further comprises: means for powering up a wireless transceiver from a low power mode when a defined sleep period has expired; andmeans for transmitting the measurement to a remote device. 18. The apparatus of claim 17, further comprises: means for transmitting an authentication code within the measurement, the authentication code being used to verify authenticity of a packet containing the measurement. 19. The apparatus of claim 16, wherein the means for adjusting the threshold value at least partially based on the information from HVAC system comprises: means for temporarily increasing the threshold value in response to the information indicative of the operation of the HVAC system indicating the HVAC system has been turned on. 20. The apparatus of claim 16, further comprising: means for outputting an indication indicative of a rate of change of the adjusted threshold value.
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