Automotive occupant sensing device

  • US 5,528,698 A
  • Filed: 03/27/1995
  • Issued: 06/18/1996
  • Est. Priority Date: 03/27/1995
  • Status: Expired due to Term
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First Claim
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1. A vehicle sensor system for sensing the presence of an object in the interior of a vehicle and classifying an image of the object, wherein the object is associated with reflected light energy, comprising:

  • image classification information representing potential images and features of the object;

    storage means for storing the image classification information;

    an image sensor for viewing the interior of the vehicle, the image sensor including;

    a lens for viewing and focusing the image of the object, anda photodetector array for acquiring the image of the object, and for detecting the reflected light energy associated with the object, further wherein the reflected light energy is represented as raw analog image signals;

    an analog-to-digital converter for receiving the raw analog image signals, and converting the raw analog image signals into digital data representing a low resolution gray-scale outline of the image of the object; and

    a processor for analyzing the digital data and for distinguishing the gray-scale outline of the image represented by the digital data, wherein the processor includescomparison means for comparing the distinguished outline of the image of the object with the stored classification information, wherein if the outline of the image of the object matches one of the stored potential images and features, the processor determines that the outline of the image represents the stored potential image.

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