Temperature sensing wireless smoke detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 2000
Grant Date -
N/A
app pub date -
Mar 29, 1999
filing date -
Mar 29, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wireless integrated smoke detector and temperature monitoring device. The device comprises a photoelectric sensor for determining the presence of smoke, thermistor for providing a temperature signal reflective of the temperature level, processing means for monitoring the smoke and temperature, and transmission means for transmitting messages to the alarm system controller. Rather than transmitting the actual temperature to the system controller, the transmitter transmits a status message which comprises status bits for low temperature trouble condition, smoke or heat alarm, and also low temperature trouble condition with smoke or heat alarm. To conserve battery power, the device alternates between a sleep mode and a wake mode. During the wake mode the trouble conditions are checked by the processor and if necessary, a status message is transmitted.
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