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System and method for sensor module power management

  • US 9,656,621 B2
  • Filed: 09/14/2016
  • Issued: 05/23/2017
  • Est. Priority Date: 09/14/2015
  • Status: Expired due to Fees
First Claim
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1. A method for power management for a retrofit sensor system for a vehicle, the method comprising:

  • at a control center attached to the vehicle, determining a driving state, the driving state predictive of a driving event;

    in response to determining the driving state, at the control center, wirelessly transmitting a first command to operate in a mid-power mode to a sensor module attached to the vehicle, the sensor module comprising;

    a sensor, an energy storage module, an energy harvester, and a wireless communication module;

    in response to receiving the first command, at the sensor module, operating the wireless communication module in a mid-power communication mode;

    at the control center, receiving a trigger from the vehicle;

    in response to receiving the trigger, at the control center, wirelessly transmitting a second command to the sensor module to operate in a high-power mode;

    in response to wirelessly transmitting the second command, at the sensor module;

    operating the sensor in a high-power sensor mode, comprising sampling a data set;

    operating the wireless communication module in a high-power communication mode, the high-power communication mode comprising transmitting data above a threshold data transfer rate; and

    transmitting the data set to the control center while operating in the high-power communication mode;

    at the control center, wirelessly transmitting the data set to a user device within the vehicle;

    after wirelessly transmitting the data set to the user device, at the control center, wirelessly transmitting a third command to the sensor module to operate in a low-power mode; and

    in response to receiving the third command, at the sensor module;

    operating the sensor in a low-power sensor mode; and

    operating the wireless communication module in a low-power communication mode comprising transmitting data below the threshold data transfer rate.

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