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Assembly module

  • US 10,407,024 B2
  • Filed: 01/07/2015
  • Issued: 09/10/2019
  • Est. Priority Date: 01/31/2014
  • Status: Active Grant
First Claim
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1. An assembly module for a motor vehicle, comprising:

  • an optical sensor system comprising;

    an optical sensor;

    a source of light; and

    a monitor configured to evaluate images recorded by the optical sensor, wherein the optical sensor system is configured toa) monitor an image of a detection region lying outside of the motor vehicle so as to determine a proximity of a user, andb) trigger a signal, in the event the user is detected in the detection region, for starting an authentication check between an ID transmitter and an access control system of the motor vehicle,whereinthe optical sensor receives light from the detection region,the source of light comprises at least one light source emitting light in a transmitting region,the images each comprise a plurality of pixels,the detection region is formed by overlapping the transmitting region of the source of light and a receiving region of the optical sensor,the optical sensor system is switchable between a sleep mode and operating mode, wherein a frame rate is lower in the sleep mode than in the operating mode, andthe light has a predefined pulse frequency which comprises a plurality of light pulses emitted by the source of light over time, wherein the pulse frequency of the light is lower in the sleep mode than in the operating mode.

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