Blood alcohol testing device based on 1.7 mu m waveband dual-wavelength laser light source

Abstract

The invention discloses a blood alcohol testing device based on a 1.7 mu m waveband dual-wavelength laser light source, belongs to the technical field of laser detection and aims to solve a problem that an infrared spectrum alcohol concentration measuring device is low in measuring precision in the prior art. The device comprises a pump laser, an erbium-doped fiber amplifier, a fiber isolator, a first fiber circulator, a thulium-doped fiber, a photonic crystal fiber, a fiber coupler, a first collimator, test paper, a second collimator, a reflection grating, a detector, a data acquisition and processing module, a detection detector, an alarm device, a second fiber circulator, a switch, a first fiber bragg grating and a second fiber bragg grating. The device is advantaged in that dual-wavelength measurement is adopted, influence caused by other factors except the wavelength can be eliminated, measurement precision is improved, and the device uses an all-fiber device to generate 1.7 [mu]m waveband laser, and is compact in structure and high in stability, the equipment can be integrated into a small size, is convenient to carry and has wide application.

Description

technical field [0001] The invention relates to a blood alcohol testing device based on a 1.7 μm band dual-wavelength laser light source, and belongs to the technical field of laser detection. Background technique [0002] Drunk driving has become the main cause of death in road traffic, which brings serious economic losses and a large number of casualties to human economy and society every year. Alcohol gas concentration detection is of great significance for road supervision departments to capture drunk drivers in road law enforcement, improve the efficiency of road law enforcement and monitor the drinking situation of people entering alcohol-free places. At present, alcohol detection methods mainly include blood test (blood test), breath test (gas test), alcohol test paper test method and infrared detection method. In many cases, traffic police need to take the driver to a medical institution for blood alcohol testing, which seriously affects the efficiency of road traff...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of low measurement accuracy of existing infrared spectrum alcohol concentration measuring devices, the present invention proposes a blood alcohol testing device based on a 1.7 μm band dual-wavelength laser light source. The device adopts dual-wavelength measurement, which can eliminate other Influenced by various factors, improve measurement accuracy, suitable for all optical fibers, good stability, and easy to carry

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