A low cost, robust, wireless sensor that provides an extended period of operability without maintenance is described. The wireless sensors are configured to communicate with a base unit or repeater. When the sensor unit detects an anomalous ambient condition (e. g., smoke, fire, water, etc.) the se
A low cost, robust, wireless sensor that provides an extended period of operability without maintenance is described. The wireless sensors are configured to communicate with a base unit or repeater. When the sensor unit detects an anomalous ambient condition (e. g., smoke, fire, water, etc.) the sensor communicates with the base unit and provides data regarding the anomalous condition. The sensor unit receives instructions to change operating parameters and/or control external devices.
대표청구항▼
What is claimed is: 1. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; at least one sensor configured to measure an ambient condition; and a controller configured to control said transceiver
What is claimed is: 1. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; at least one sensor configured to measure an ambient condition; and a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said at least one sensor when said wireless sensor unit determines that data measured by said at least one sensor fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and configured to receive said identification code during a reset interval. 2. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a smoke sensor. 3. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises an air temperature sensor. 4. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a water-level sensor. 5. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a water-temperature sensor. 6. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a moisture sensor. 7. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a humidity sensor. 8. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a carbon monoxide sensor. 9. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a flammable gas sensor. 10. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a door-open sensor. 11. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a broken-window sensor. 12. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises an intrusion sensor. 13. The wireless ambient sensor unit of claim 1, wherein said at least one sensor comprises a power-failure sensor. 14. The wireless ambient sensor unit of claim 1, wherein said threshold test comprises a high threshold level. 15. The wireless ambient sensor unit of claim 1, wherein said threshold test comprises a low threshold level. 16. The wireless ambient sensor unit of claim 1, wherein said threshold test comprises an inner threshold range. 17. The wireless ambient sensor unit of claim 1, wherein said threshold test comprises an outer threshold range. 18. The wireless ambient sensor unit of claim 1, wherein said wireless sensor units further comprises a tamper sensor. 19. The wireless ambient sensor unit of claim 1, wherein said wireless sensor unit is configured to receive an instruction to change a status reporting interval. 20. The wireless ambient sensor unit of claim 1, wherein said wireless sensor unit is configured to receive an instruction to change a sensor data reporting interval. 21. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; at least one sensor configured to measure an ambient condition; a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said at least one sensor when said wireless sensor unit determines that data measured by said at least one sensor fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code; and a reset switch to activate a reset function, said ambient sensor unit configured to receive said identification code during a prescribed interval of time after activation of said reset function. 22. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; at least one sensor configured to measure an ambient condition; a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said at least one sensor when said wireless sensor unit determines that data measured by said at least one sensor fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and configured to receive said identification code wirelessly during a reset interval. 23. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; at least one sensor configured to measure an ambient condition; a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said at least one sensor when said wireless sensor unit determines that data measured by said at least one sensor fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code; and configured to receive said identification code using battery connections during a reset interval. 24. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; means for sensing an ambient condition; and a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said means for sensing when said wireless sensor unit determines that data measured by said means for sensing fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and configured to receive said identification code during a reset interval. 25. The wireless ambient sensor unit of claim 24, wherein said threshold test comprises a high threshold level. 26. The wireless ambient sensor unit of claim 24, wherein said threshold test comprises a low threshold level. 27. The wireless ambient sensor unit of claim 24, wherein said threshold test comprises an inner threshold range. 28. The wireless ambient sensor unit of claim 24, wherein said threshold test comprises an outer threshold range. 29. The wireless ambient sensor unit of claim 24, wherein said wireless sensor units further comprises a tamper sensor. 30. The wireless ambient sensor unit of claim 24, wherein said wireless sensor unit is configured to receive an instruction to change a status reporting interval. 31. The wireless ambient sensor unit of claim 24, wherein said wireless sensor unit is configured to receive an instruction to change a sensor data reporting interval. 32. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions: means for sensing an ambient condition; a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said means for sensing when said wireless sensor unit determines that data measured by said means for sensing fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and reset means to activate a reset function, said ambient sensor unit configured to receive said identification code during a prescribed interval of time after activation of said reset function. 33. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; means for sensing an ambient condition; and a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said means for sensing when said wireless sensor unit determines that data measured by said means for sensing fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and configured to receive said identification code wirelessly during a reset interval. 34. A wireless ambient sensor unit, comprising: a frequency-hopping spread spectrum transceiver configured to transmit sensor data and to receive instructions; means for sensing an ambient condition; and a controller configured to control said transceiver and said at least one sensor, said wireless sensor unit configured to report data measured by said means for sensing when said wireless sensor unit determines that data measured by said means for sensing fails a threshold test, said sensor unit configured to operate in a low-power mode when not transmitting data or receiving instructions, said sensor unit configured to transmit status information at regular intervals and to enter a receive mode for a period after transmitting said status information, said sensor unit having an identification code and configured to implement instructions addressed to the sensor unit according to said identification code, and configured to receive said identification code using battery connections during a reset interval.
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