Remote sensing quick laser automatic predetection device for drunk driving

A laser and remote sensing technology, applied in the measurement of color/spectral characteristics, etc., can solve the problem of not giving, and achieve the effect of saving police resources and improving law enforcement efficiency.

Inactive Publication Date: 2012-02-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

This publication does not give a specific and suitable spectral characteristic absorption peak position and the core light source of the laser, and at the same time, other components of the device have not been given a detailed description.

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  • Remote sensing quick laser automatic predetection device for drunk driving
  • Remote sensing quick laser automatic predetection device for drunk driving
  • Remote sensing quick laser automatic predetection device for drunk driving

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Embodiment Construction

[0013] Combine below Figure 1 to Figure 5 Describe this embodiment mode, a kind of drunk driving remote sensing rapid laser automatic pre-screening device, see figure 1 As shown, the present invention includes a 905nm tunable vertical cavity surface emitting laser 1, a modulation signal generation unit 2, a laser drive control unit 3, a converging lens 4, a collimator 5, a photodetector 6, a detector preprocessing circuit 7, a lock Phase amplification detection unit 8, data acquisition and processing unit 9 and optical fiber 10; the collimator 5 is installed in the center of the converging lens 4; the modulation signal generation unit 2, laser drive control unit and 905nm tunable vertical cavity surface emission The laser 1 is sequentially connected through a signal transmission line; the 905nm tunable vertical cavity surface emitting laser 1 and the collimator 5 are connected through an optical fiber 10; the photodetector 6 is arranged at the focus position of the converging...

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Abstract

The invention discloses a remote sensing quick laser automatic predetection device for drunk driving, and relates to an alcohol gas concentration detection device. By the device, the problem that detection interference cannot be reduced due to incapability of detecting appropriate characteristic absorption peaks of light spectra and a core light source of a laser by the conventional predetection device in the detection process is solved. The device comprises a 905-nanometer tunable vertical cavity surface emitting laser, a modulating signal generation unit, a laser driving control unit, a convergent lens, a collimator, a photoelectric detector, a detector preprocessing circuit, a phase locking amplification detection unit, a data acquiring and processing unit and an optical fiber. By the remote sensing quick laser automatic predetection device, the concentration of alcohol in passing vehicles on road surfaces can be predetected effectively, and traffic polices can perform targeted investigation according to a predetection result, so the law enforcement efficiency is improved, and police strength 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 Applications(China)
IPC IPC(8): G01N21/39
Inventor 王彪王立军曹军胜刘云宁永强秦莉
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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