Thin finger vein authentication device

Abstract

A thin finger vein authentication device disclosed by the present invention comprises a base; the side wall of the base is provided with a rectangular hole, the inner wall of the base is provided with a cavity, the inner wall of the cavity is provided with a through hole, the through hole is communicated with the rectangular hole, the through hole is internally and fixedly connected with an upper light transmitting mirror, the inner wall of the rectangular hole is provided with a groove, the inner wall of the groove is fixedly connected with a lower light transmitting mirror, the inner wall of the cavity is fixedly connected with an infrared light source and an adjusting part, the inner wall of the rectangular hole is elastically connected with a piston through a magnetostrictive spring, and the piston is fixedly connected with a scraping part. By arranging the piston, the mercury switch, the sliding block and other structures, when a finger of a user pushes the piston to slide in a sealed mode, the multiple connecting rods are driven to move, the mercury switch is changed to be in an inclined state, a circuit is closed, manual starting of an infrared lamp source power source or long-term starting of the infrared lamp source in the using process is avoided, operation is easy, and the using cost is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of vein authentication devices, in particular to a thin finger vein authentication device. Background technique [0002] With the rapid development of information technology and the continuous progress of human society, newer and higher requirements are put forward for information technology. In the era of network informationization, there are more and more applications for identifying people's identities, and the digitalization and invisibility of identities are required. How to accurately identify a person's identity and protect information security is a key issue that must be solved in the information age. question. At present, one of the advanced recognition methods is the vein recognition system, which is a way to obtain images of veins in fingers, palms, and backs of hands through infrared cameras, and store the digital images of veins in the computer system to realize feature value storage. Conduct ...

AI Technical Summary

Problems solved by technology

[0003] However, the infrared light source of current vein authentication equipment often needs to be turned on manually before each use, or it is left on for a long time, which causes inconvenience in use, wastes power resources, and affects the intensity of infrared rays irradiated on fingers, palms and backs of hands. It is a fixed value, so that for different test groups, due to different palm thicknesses or differences in the thickness of blood vessels, etc., it is easy to have insufficient infrared intensity to obtain clear contrast images, or overexposure caused by excessive infrared intensity will affect the veins. Accuracy of authentication, and at the same time, it is necessary to keep the light-transmitting parts clean and tidy during the vein recognition process

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