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Drunk driving remote-sensing fast laser automatic pre-checking device

A remote sensing and laser technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of poor suppression effect and affecting the accuracy of laser energy measurement, so as to improve measurement accuracy, save police resources, and improve law enforcement efficiency Effect

Inactive Publication Date: 2012-12-12
吉林省长光瑞思激光技术有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

This detection technology has a poor suppression effect on the super noise generated in the detection process and the energy drift generated in the modulation, which will affect the measurement accuracy of laser energy

Method used

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  • Drunk driving remote-sensing fast laser automatic pre-checking device
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  • Drunk driving remote-sensing fast laser automatic pre-checking device

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] see figure 1 As shown, the present invention includes an excitation laser 101, a detection laser 102, a modulation signal generating unit 2, a laser drive control unit 3, a converging lens 4, an excitation laser collimator 501, a detection laser collimator 502, a photodetector 6, a detection Device preprocessing circuit 7, lock-in amplification detection unit 8, data acquisition and processing unit 9, and optical fiber I 1001 and optical fiber II 1002; the excitation laser collimator 501 and detection laser collimator 502 are installed at the center of the converging lens 4 The modulation signal generating unit 2 is connected with the laser drive control unit 3 through a signal transmission line; the laser drive control unit 3 is respectively connected with the excitation laser 101 and the detection laser 102 thr...

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Abstract

The invention discloses a drunk driving remote-sensing fast laser automatic pre-checking device, relates to an ethanol gas concentration detection device, and is used for solving the problems that the existing pre-checking device generates excess noise during the detection process and generates very poor effect of inhibiting energy drift during modulation, thereby affecting measurement precision of laser energy. The device comprises an excitation laser device, a detection laser device, a modulation signal generation unit, a laser device driving and control unit, a converging lens, an excitation laser collimator, a detection laser collimator, a photoelectric detector, a detector pre-processing circuit, a phase-locked amplification and detection unit, a data acquisition and processing unit and an optical fiber. By adopting the device, pre-checking of ethanol concentration in passing vehicles on a pavement can be effectively performed, a traffic police can perform targeted investigation through a pre-checking result, the law enforcement efficiency is improved and police force resources are saved.

Description

technical field [0001] The invention relates to an ethanol gas concentration detection device, in particular to a remote-sensing rapid laser automatic pre-inspection device for drunk driving. Background technique [0002] In recent years, the tragic car accidents caused by drunk driving in our country have occurred frequently after repeated exposure. The traditional inspection method and inspection equipment --- "breath alcohol detector" is untargeted and inefficient, and it also affects the normal operation of road vehicles, and also causes a lot of waste of one-time inspection equipment and police resources. [0003] The patent document with the patent publication number CN101936896A discloses a laser telemetry device for ethanol gas concentration, which is composed of a laser control and emission system and a signal receiving, analyzing and displaying system. Its essence is a device that uses tunable semiconductor diode laser absorption spectroscopy (TDLAS) to detect alc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/00
Inventor 王彪王立军曹军胜宁永强刘云秦莉
Owner 吉林省长光瑞思激光技术有限公司
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