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Drunk driving detection device and method

A detection device and detection method technology, applied in the direction of measurement device, color/spectral characteristic measurement, material analysis by optical means, etc., can solve the problem of low efficiency, achieve fast response, strong selectivity, and avoid detection loopholes. Effect

Inactive Publication Date: 2016-07-20
NANJING INST OF ADVANCED LASER TECH
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  • Abstract
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Problems solved by technology

But the device's method of detecting drunk driving is still not efficient

Method used

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  • Drunk driving detection device and method
  • Drunk driving detection device and method
  • Drunk driving detection device and method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with specific embodiments.

[0026] Such as Figure 1 to Figure 5 As shown, a drunk driving detection device is respectively provided with an infrared laser emitting device 2 and an infrared laser receiving device 4 on both sides of the area to be detected (roadside), and its height can penetrate through the height of the side window of the vehicle 3 driving on the road. , the infrared laser emitted by the infrared laser emitting device 2 can penetrate the window and be received by the infrared laser receiving device 4 .

[0027] The wavelength of the infrared laser emitted by the infrared laser emitting device 2 is located at the absorption wavelength of alcohol (ethanol) molecules, and is staggered with the absorption peaks of other molecules in the atmosphere, such as water vapor, carbon dioxide, and methane molecules, to avoid interference.

[0028] The infrared laser received by the infrared lase...

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Abstract

The invention discloses a drunk driving detection device. The drunk driving detection device comprises infrared laser emitting devices for emitting infrared lasers and infrared laser receiving devices for receiving the infrared lasers, wherein the infrared lasers emitted by the infrared laser emitting devices include detection light of which the wave length is positioned at an absorption peak of alcohol molecules and reference light which is free from absorption of alcohol molecules at the wave length. The infrared laser emitting devices emit the detection light and the reference light, and noise, caused by atmospheric disturbances and the like, to the detection light can be eliminated, so that the detection sensitivity is improved.

Description

technical field [0001] The invention belongs to the technical field of gas detection, and more specifically relates to a drunk driving detection device and a detection method thereof. Background technique [0002] Drunk driving is the main cause of traffic accidents, but the current detection rate of drunk driving is still very low, which brings huge hidden dangers to traffic safety. Therefore, an online detection device that can quickly and accurately detect drunk driving is needed. There are many methods for gas detection, such as electrochemical type, semiconductor type, infrared type, gas chromatographic analysis type, and colorimetric type. Electrochemical and semiconductor detectors are currently the most widely used in the market, but these two detectors require the driver to exhale at the instrument after getting off the car to know whether he has drunk alcohol, so the detection efficiency is very low. [0003] Patent CN102590136 proposes the method of using differe...

Claims

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Application Information

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IPC IPC(8): G01N21/3504G01N21/39G01N21/01
CPCG01N21/3504G01N21/01G01N21/39
Inventor 王欢
Owner NANJING INST OF ADVANCED LASER TECH
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