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Vehicle breath monitoring device

  • US 4,926,164 A
  • Filed: 12/15/1988
  • Issued: 05/15/1990
  • Est. Priority Date: 12/24/1987
  • Status: Expired due to Fees
First Claim
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1. A vehicle breath monitoring device for a motor vehicle and its driver, said device comprising a breath monitoring means having an input for accepting a prescribed volume and an output connected as an input to a processing means, an ambient condition input sensing means located adjacent to said breath monitoring means to ensure accuracy of breath monitoring, said ambient condition input sensing means having an output connected as an input to said processing means, the output of said ambient condition sensing modifying the data received by said processing means to reflect changes in ambient temperature, and said processing means providing an output signal in accordance with said modified data to either a starter motor circuit control means, or to an indication means, starting of said starter motor being inhibited or said indication means being energized unless the alcohol concentration of respired air of said driver as detected by said breath monitoring means and modified by said processing means is less than a predetermined limit stored in said processing means.

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