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Method and device for recognising the condition of vehicle occupants

  • US 10,011,176 B2
  • Filed: 01/14/2016
  • Issued: 07/03/2018
  • Est. Priority Date: 01/20/2015
  • Status: Active Grant
First Claim
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1. A method for identifying a condition of a vehicle occupant on the basis of ballistocardiograph (BCG) data, comprising:

  • obtaining the BCG data of the vehicle occupant from a BCG sensor, wherein the BCG sensor is a micro-electrical-mechanical (MEM) sensor;

    carrying out a cross-correlation function of a BCG signal with heartbeat parameters in an optimum filter, wherein the heartbeat parameters are varied within predefined limits to find a maximum of the cross-correlation function;

    locating probable peaks in the cross-correlation function;

    calculating a heart rate from the probable peaks; and

    wherein the heartbeat parameters include a plurality of heartbeat patterns that are generated by frequency variation of one or more predefined heartbeat patterns within natural heartbeat limits.

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