Patent ID: 6640174
Filing Date: 2003-10-28
Classification: B60K,B60R

Abstract:
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.