Motor vehicles – With means for promoting safety of vehicle – its occupant or... – Responsive to absence or inattention of operator – or...
Patent
1996-09-23
1998-04-28
Rice, Kenneth R.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
Responsive to absence or inattention of operator, or...
B60K 2806
Patent
active
057433496
ABSTRACT:
A vehicle ignition interlock system including a non-invasive reader of a person's blood-alcohol concentration in combination with ignition interlock circuitry that prevents operation of a vehicle by an intoxicated person. The non-invasive blood-alcohol concentration reader, termed alcoh-meter, utilizes optical spectroscopic electromagnetic radiation technology to determine the alcohol levels in the blood. The alcoh-meter is preferably a dash mounted sensor for receiving a person's finger and absorbing incident light from a multiple wavelength light source and causing a light absorption reading to be generated based on the person's blood alcohol concentration in the finger tissue. After registering a reading, the results are compared electronically against a table of impaired
on-impaired levels of blood alcohol concentration. The impaired
on-impaired results are communicated to interlock circuitry that either enables, or disables start-up of the vehicle. If an impaired status is determined, the results are displayed instructing the operator to wait, or find a non-impaired operator.
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Alcohol and the Human Body, "Intoximeter, Inc. 1995, (http://www.intox.com/Physiology.html) pp. 1-5 How Does a Pulse Oximeter Work" by NICL Laboratories, 1996, (http://www.nicl.com/labnotes/pulseox.html) pp. 1-2 User's Manual for the NELLCOR Pulse Oximeter (Model N-110C), Nellcor Inc. Hayward Ca. pp. 30-32.
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