×

Power management in wireless tracking device operating with restricted power source

  • US 9,696,429 B2
  • Filed: 12/28/2010
  • Issued: 07/04/2017
  • Est. Priority Date: 12/28/2010
  • Status: Active Grant
First Claim
Patent Images

1. A wireless tracking device, comprising:

  • a locating device configured to determine a geographic location of the wireless tracking device;

    a plurality of sensors;

    a first sensor, of the plurality of sensors, configured to generate a first-sensor signal during a first mode, the first-sensor signal representing a condition or a property associated with the wireless tracking device;

    at least one controller coupled to the location device and the plurality of sensors, the at least one controller configured to;

    generate a message indicating the geographic location and the condition or the property associated with the wireless tracking device;

    set the wireless tracking device in the first mode;

    switch the wireless tracking device from the first mode to a second mode in response to the first-sensor signal exceeding a first threshold; and

    maintain the wireless tracking device in the second mode in response to receiving a second-sensor signal from a second sensor, of the plurality of sensors, indicating a change that exceeds a second threshold;

    wherein the second mode consumes more power than the first mode and the second mode increases the sensitivity of the plurality of sensors as compared to the first mode; and

    a communication module operable in the second mode but not the first mode, and configured to send the message via a wireless network.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×