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Control system for vehicle safety device

  • US 5,363,301 A
  • Filed: 02/20/1992
  • Issued: 11/08/1994
  • Est. Priority Date: 03/13/1991
  • Status: Expired due to Fees
First Claim
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1. A control system for a vehicle safety device comprising:

  • (a) an acceleration sensor for outputting a signal representative of acceleration of a vehicle when the vehicle is accelerated and for outputting a signal representative of deceleration of the vehicle when the vehicle is decelerated;

    (b) total integral value calculation means for effecting an integral calculation in accordance with said signal from said acceleration sensor to produce a total integral value representative of a change in speed of the vehicle;

    (c) first comparison means for comparing said total integral value with a threshold level;

    (d) deceleration integrating means for integrating the deceleration component of said signal from said acceleration sensor to produce a deceleration integral value;

    (e) acceleration integrating means for integrating the acceleration component of said signal from said acceleration sensor to produce an acceleration integral value;

    (f) second comparison means for comparing said deceleration integral value with said acceleration integral value; and

    (g) trigger signal outputting means for outputting a trigger signal to the vehicle safety device when said first comparison means judges that said total integral value increasing in the decelerating direction exceeds said threshold level, and said second comparison means judges that said deceleration integral value becomes predetermined times greater than said acceleration integral value.

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