Ignition interlock breathalyzer

Abstract

The invention relates to an improvement in a breath alcohol test devices includes within the handheld unit containing a fuel cell, a miniaturized self calibrating test device thereby avoiding the need for 30, 60 and 90 day calibration testing. It also relates to various tamper or circumvention improvements that may be used alone or in combination with the self calibration improvement, including cameras to record a driver providing a breath sample and to verify the location of the driver within a vehicle.

1 . A vehicle interlock breathalyzer system comprising:
 a handheld part including a breath sample collection and testing unit;   a relay box part for connection with an electrical system of a vehicle to impede operation of the vehicle if an acceptable breath sample is not provided to the breath sample collection and testing unit, and   a global positioning system to report the location of the vehicle interlock breathalyzer.   
     
     
         2 . The vehicle interlock breathalyzer of  claim 1  which includes the global positioning system in the handheld unit. 
     
     
         3 . The vehicle interlock breathalyzer of  claim 1  which includes the global positioning system within the relay box. 
     
     
         4 . A vehicle interlock breathalyzer system comprising:
 a handheld part including a breath sample collection and testing unit;   a relay box part for connection with an electrical system of a vehicle to impede operation of the vehicle if an acceptable breath sample is not provided to the breath sample collection and testing unit, and   a Hall effect sensor in the handheld unit to detect tampering with the handheld unit.   
     
     
         5 . The vehicle interlock system of  claim 4  which includes within the handheld part a transducer to detect air pressure within the handheld part. 
     
     
         6 . A vehicle interlock breathalyzer system comprising:
 a handheld part including a breath sample collection and testing unit;   a relay box part for connection with an electrical system of a vehicle to impede operation of the vehicle if an acceptable breath sample is not provided to the breath sample collection and testing unit, and   breath temperature sensor within the handheld unit.