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Device and method to detect presence in a motor vehicle

  • US 20050280515A1
  • Filed: 04/20/2005
  • Published: 12/22/2005
  • Est. Priority Date: 06/19/2004
  • Status: Active Grant
First Claim
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1. A device to detect the presence of a living being in a motor vehicle, comprising:

  • a carbon dioxide sensor to measure a concentration value representing a carbon dioxide concentration in the motor vehicle;

    an analysis unit to compare at least one of the concentration value and a change value representing a change in the concentration value over time with at least one threshold;

    a transmitting device activated when at least one of the concentration value and the change value exceeds the threshold and emitting radiated signals; and

    a receiving device to activate an indicator device when the radiated signals are received.

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