Vehicle ignition interlock systems with retesting frequency...

Details Vehicle ignition interlock systems with retesting frequency... Vehicle ignition interlock systems with retesting frequency...

B - Operations, Transporting

60

R

B60R 25/00 (2006.01) A61B 5/18 (2006.01) B60K 28/06 (2006.01) G01N 33/497 (2006.01)

Patent

CA 2606881

A vehicle ignition interlock system includes a breath analyzer and a controller operably connected to the breath analyzer and to an ignition system of the vehicle. The controller compares detected breath alcohol levels of the vehicle operator with a threshold value, and is configured to prevent vehicle ignition if a breath alcohol level detected by the breath analyzer is greater than or equal to a threshold value. The controller also requires the vehicle operator to periodically take breath analyzer retests after vehicle ignition in order to allow vehicle operation to continue. The controller can reduce the frequency of periodic retests in response to one or more retests when the breath alcohol level of the vehicle operator is below a threshold value. The system may include a transdermal alcohol sensor, a mouth contamination sensor, and redundant alcohol sensors.

L'invention porte sur un système de blocage de l'allumage d'un véhicule comportant un éthylomètre, et un contrôleur relié à l'éthylomètre et au système d'allumage du véhicule. Le contrôleur compare les niveaux détectés par l'éthylomètre à une valeur seuil et coupe l'allumage si le seuil est atteint ou dépassé. Le contrôleur demande au conducteur d'effectuer des tests périodiques après le démarrage pour permettre la poursuite de la conduite; il peut en outre réduire la fréquence des tests si ledit seuil n'est pas dépassé. Le système peut également comporter un détecteur d'alcool transdermique, un détecteur de contaminants buccaux, et des détecteurs d'alcool redondants.

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