Multi-circuit processing type power supply for face detection system

A face detection and processing technology, applied in the electronic field, can solve problems such as output voltage and current instability, achieve the effects of reducing leakage current and loss current, preventing drift, and eliminating inaccurate detection

Inactive Publication Date: 2016-11-09
CHENGDU HANDAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of unstable output voltage and current in the power suppl

Method used

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  • Multi-circuit processing type power supply for face detection system
  • Multi-circuit processing type power supply for face detection system
  • Multi-circuit processing type power supply for face detection system

Examples

Experimental program
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Example Embodiment

[0020] Example

[0021] Such as figure 1 As shown, the present invention mainly consists of the control chip U2, the diode rectifier U1, the field effect transistor MOS1, the transistor VT1, the N pole is connected to the VDD+ pin of the control chip U2 through the resistor R3, and the P pole is connected to the base of the transistor VT1 The diode D1, the anode is connected to the anode output terminal of the diode rectifier U1, the cathode is connected to the cathode output terminal of the diode rectifier U1, the cathode is connected to the gate of the field effect transistor MOS1, and the anode is connected to the control chip U2 The polar capacitor C4 connected to the EXT pin, the N pole is connected to the drain of the field effect transistor MOS1, the P pole is connected to the VSS pin of the control chip U2, and the cathode is connected to the source of the field effect transistor MOS1. The voltage detection circuit connected to the VDD-pin of the control chip U2 and the e...

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Abstract

The invention discloses a power supply for a multi-circuit processing type face detection system, which is characterized in that it mainly consists of a control chip U2, a diode rectifier U1, a field effect transistor MOS1, a triode VT1, a diode D1, a polar capacitor C1, and a polar capacitor C4, diode D4, polar capacitor C5, voltage detection circuit, base constant current drive circuit, triode voltage regulator circuit connected in series between the negative output terminal of diode rectifier U1 and the voltage detection circuit, and polar capacitor connected in series It is composed of a ripple peak suppression circuit between the positive pole of C5 and the base constant current drive circuit. The present invention can effectively reduce the leakage current and loss current of the input current, and can suppress the abnormal fluctuation of the input current, so that the input current remains stable, thereby improving the stability of the output voltage and current of the present invention, and effectively improving the The detection accuracy of the detection system.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a power supply for a multi-circuit processing type face detection system. Background technique [0002] With the vigorous development of high technology, the face detection system is widely used as a human body identification code. At present, more and more enterprises need to apply this intelligent identification system to access control management in order to adapt to the information age. However, the power supply of the current face detection system is prone to fluctuations under the interference of external electromagnetic waves, resulting in unstable output voltage and current, which seriously affects the detection accuracy of the face detection system, causing non-staff personnel to enter the room, affecting The normal work of the user, and has brought great potential safety hazard to the user. [0003] Therefore, it is imperative to provide a power supply for a face detection ...

Claims

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Application Information

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IPC IPC(8): H02M7/217H02M3/156H02M1/14H02M1/32
CPCH02M7/217H02M1/14H02M1/32H02M3/156
Inventor 不公告发明人
Owner CHENGDU HANDAO TECH CO LTD
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