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Wireless sensor unit communication triggering and management

  • US 9,723,559 B2
  • Filed: 04/05/2016
  • Issued: 08/01/2017
  • Est. Priority Date: 05/27/2004
  • Status: Active Grant
First Claim
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1. A wireless ambient sensor unit, comprising:

  • a wireless transceiver;

    a sensor configured to measure quantitative data about an ambient condition;

    a controller in communication with the wireless transceiver and the sensor, the controller configured to;

    compare the quantitative data measured about the ambient condition to a stored threshold value while the wireless ambient sensor unit is in a low-power mode;

    exit the low-power mode in response to the comparison of the quantitative data with the stored threshold value; and

    in response to the exit of the low-power mode, transmit the quantitative data measured about the ambient condition as one or more messages, using the wireless transceiver, the quantitative data being transmitted while the wireless ambient sensor unit is out of the low-power mode and each message includes an address that identifies the wireless ambient sensor unit, a checksum, and an authenticity portion for use in verifying an authenticity of the message.

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