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System and method for identifying idling times of a vehicle using accelerometer data

  • US 10,019,762 B2
  • Filed: 05/15/2014
  • Issued: 07/10/2018
  • Est. Priority Date: 05/15/2014
  • Status: Active Grant
First Claim
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1. A computer implemented method for determining one or more idling time windows from a vehicle trip, the method comprising:

  • placing a client computing device in a vehicle;

    receiving, via a computer network, a plurality of telematics data originating from the client computing device placed in the vehicle;

    identifying, by one or more processors, a primary movement window from secondary movement data in the plurality of telematics data, wherein the primary movement window has a total spectral power that does not meet a threshold spectral value, the primary movement window being indicative of the client computing device being static with respect to the moving vehicle, and wherein the secondary movement data has a total spectral power that meets the threshold spectral value, the secondary movement data being indicative of the client computing device moving with respect to the moving vehicle;

    measuring, by the one or more processors, a total variance from the plurality of telematics data at one or more time stamps in the primary movement window;

    determining, by the one or more processors, an average signal total variance from the plurality of telematics data in the primary movement window;

    normalizing, by the one or more processors, the total variance at the one or more time stamps using the generated average; and

    determining, by the one or more processors, one or more idling time windows from the normalized total variance, wherein each of the idling time windows indicate a period of time when the vehicle is not moving.

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