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Device for controlling expansion of an air bag apparatus

  • US 6,428,040 B2
  • Filed: 12/19/2000
  • Issued: 08/06/2002
  • Est. Priority Date: 12/28/1999
  • Status: Active Grant
First Claim
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1. A device for controlling an air bag apparatus including an inflatable air bag and mounted in an automotive vehicle having a passenger compartment defined therein, said device comprising:

  • a first acceleration sensor mounted in the passenger compartment for detecting an acceleration thereof;

    a second acceleration sensor mounted in a front portion of the vehicle body; and

    a control unit electrically connected to said first and second acceleration sensors so that signals from said first and second acceleration sensors are inputted to said control unit;

    wherein when a first value derived from a signal detected by said first acceleration sensor has exceeded a first criterion and when a second value derived from a signal detected by said second acceleration sensor has exceeded a predetermined value greater than the first criterion, said control unit outputs an expansion signal for causing the air bag apparatus to inflate the air bag.

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