| 摘要 |
A system for inhibiting operation of a vehicle 10 by a person who has consumed alcohol comprises an alcohol testing device 18 for measuring the level of alcohol in a breath sample provided by a person intending to operate the vehicle 10, whereby the vehicle 10 is disabled if the measured level of alcohol is found to exceed a specified limit. Additionally, an infrared imaging device 12, which may be a passive thermal imaging device (comprising an infrared microbolometer array) or an illuminated infrared imaging device, operable to image a region including the operator's seat and determine the presence or absence of a person in the seat. The vehicle can be disabled if the infrared imaging device 12 detects that the person leaves the seat after providing a satisfactory breath sample for enabling the vehicle 10, or that a second person is present near the alcohol testing device 18. The infrared imaging device 12 and may use pattern recognition techniques or comparison with a library of images. |
