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WIRELESS TRANSCEIVER

  • US 20080278316A1
  • Filed: 07/29/2008
  • Published: 11/13/2008
  • Est. Priority Date: 05/27/2004
  • Status: Active Grant
First Claim
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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 wirelessly during an initialization interval.

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