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Method of controlling activation of a vehicle occupant restraint system, control system and vehicle occupant restraint system

  • US 5,983,148 A
  • Filed: 03/21/1997
  • Issued: 11/09/1999
  • Est. Priority Date: 03/25/1996
  • Status: Expired due to Term
First Claim
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1. A method of controlling multistage activation of a vehicle occupant restraint system including a gas generator, the vehicle occupant restraint system being adapted to be activated in a plurality of activation stages, comprising the steps of:

  • a) vehicle sensitive measurement of differences in velocity occuring during a vehicle collision,b) determining a point in time as of which differences in velocity are measured,c) determining a point in time as of which a predetermined first threshold value of said differences in velocity is attained,d) determining the intensity of said vehicle collision from the time difference of said points in time established in steps b) and c), ande) furnishing different output signals depending on the values established by the steps b) and c) for initiating different ones of said plurality of activation stages in activating said restraint system, in accordance with said determined intensity of said vehicle collision.

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