Access control machine capable of identifying finger prints under screen

Abstract

The invention discloses an access control machine capable of identifying finger prints under a screen, which comprises an access control machine main body, wherein the access control machine main bodycomprises an access control machine front shell, an access control machine rear shell and an access control machine control circuit board; the access control machine front shell and the access control machine rear shell are fixedly connected to form a control cavity; the access control machine control circuit board and an ultrasonic fingerprint identification module are arranged in the control cavity; the access control machine control circuit board is fixedly connected with the inner side of the access control machine rear shell; the access control machine front shell is provided with a touch display screen; the touch display screen is in line connection with the control circuit board; and the ultrasonic fingerprint identification module is fixedly connected below the touch display screen. According to the invention, the ultrasonic fingerprint identification module transmits the ultrasonic pulse to a finger and creates a detailed fingerprint three-dimensional structure diagram according to the fingerprint information fed back by the ultrasonic pulse, so that the data of the grooves and ridges of the finger are read, the identification precision of the access control machine is improved, and convenience is brought to people.

Description

technical field [0001] The invention relates to the field of access control machines, in particular to an access control machine capable of fingerprint identification under the screen. Background technique [0002] Biometric technology is listed as one of the technologies that have a huge impact on human production and life in the new century. Biometric identification is currently the most convenient and safe identification technology. Biometric identification technology identifies the person himself and does not require markers other than the person. Biometric recognition technology uses human physiological and behavioral characteristics for identification, mainly including the following categories, fingerprint recognition, face recognition, iris recognition, gait recognition, etc. Among them, fingerprint recognition is a widely used recognition technology. [0003] The fingerprint identification module of existing access control machine is generally positioned at the bel...

AI Technical Summary

Problems solved by technology

[0004] 1. This type of fingerprint identification module is relatively large, resulting in an excessively large volume of the entire access control machine;

[0005] 2. The recognition surface of this type of fingerprint recognition module is easy to accumulate dust and dirt, and it is not easy to clean;

[0006] 3. This type of fingerprint recognition module cannot recognize when the finger is wet or coated with hand cream, and the recognition performance is poor

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