Band-pass filtering circuit-based signal processing system for face recognition system

Abstract

The invention discloses a band-pass filtering circuit-based signal processing system for a face recognition system. The signal processing system is characterized in that the signal processing system is mainly composed of a processing chip U, a polarity capacitor C8, a diode D6, a frequency mixing tuning circuit, a signal frequency correction circuit, a signal preprocessing circuit, and a band-pass filtering circuit; the N pole of the diode D6 is connected with the FREP pin of the processing chip U, and the P pole of the diode D6 passes through a resistor R16, and then is connected with the RC pin of the processing chip U; the frequency mixing tuning circuit is connected with the processing chip U; the signal frequency correction circuit passes through an inductor L1, and then is connected with the COMP pin of the processing chip U; the signal preprocessing circuit is connected with the signal frequency correction circuit; and the band-pass filtering circuit is connected in series between the signal frequency correction circuit and the signal preprocessing circuit. The band-pass filtering circuit-based signal processing system for the face recognition system stabilizes high and low signal frequencies in image signals, eliminates or attenuates unwanted signal frequencies in the image signals so as to make the inputted image signals stably transmitted, so that the signal processing system of the invention can ensure the recognition accuracy of the face recognition system.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a signal processing system for a face recognition system based on a band-pass filter circuit. Background technique [0002] With the vigorous development of high technology, the face recognition system has been widely used as a human body password because of its convenience. In addition, intelligent management has entered people's social life now, and intelligent buildings have sprung up one after another to meet the needs of the information age. As a noble building and office environment, it must meet the current and future development needs functionally. Become a base for cultural and economic development. Therefore, the face recognition system has been applied to Daxia's access control recognition system, but because the signal processing system of the current face recognition system cannot eliminate the interference signal in the image signal, and there is inaccurate image signal ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the signal processing system of the face recognition system in the prior art has poor anti-interference ability and inaccurate processing of the received signal, and provides a signal for face recognition system based on a band-pass filter circuit. processing system

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