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Restraint and fuel system cutoff control module

  • US 6,640,174 B2
  • Filed: 01/31/2001
  • Issued: 10/28/2003
  • Est. Priority Date: 01/31/2001
  • Status: Expired due to Term
First Claim
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1. A method of discriminating between a normal power interruption to a restraint control module and a collision induced power interruption to the restraint control module comprising:

  • setting a digital input bit of a microprocessor in a first state when a normal power interruption occurs;

    monitoring by the microprocessor for power interruption to the restraint control module while powered;

    monitoring an algorithm programmed into the microprocessor that checks sensor output data to determine whether a collision event has occurred, and upon determination that a power interruption has occurred checking the algorithm to determine whether the power interruption occurred during a collision event, setting the digital input bit to a second state to indicate that the power interruption occurred during a collision event, and preventing powering up of a system of the vehicle controlled by the microprocessor when the digital bit is in the second state.

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