CN209000088U - A kind of integral control circuit of attendance gate inhibition - Google Patents

Abstract

The utility model discloses the integral control circuits of attendance gate inhibition a kind of, for obtaining somatic fingerprint and exporting the fingerprint sampling module of corresponding finger print information, the switch module that the finger print information including exporting the fingerprint sampling module is compared with the finger print information prestored and output switching signal is opened when such a match occurs with access control；Wherein, the finger print information output end of the fingerprint sampling module is connect with the finger print information input terminal of the switch module, and the opening signal output end of the switch module is connect with the opening signal input terminal of the gate inhibition.The utility model circuit structure and work-based logic are simple, and circuit anti-interference ability is strong, and cost is relatively low, convenient later maintenance.

Description

A kind of integral control circuit of attendance gate inhibition

Technical field

The utility model relates to the integrated control of integral control circuit field more particularly to a kind of attendance gate inhibition electricity Road.

Background technique

In the prior art, attendance gate inhibition be current all mansion offices require using to record personnel disengaging and open The working way of shutdown, but existing technology peripheral components are more, work-based logic is complicated, complex process, production and debugging are difficult And it is very unstable, operating condition is influenced by power supply ripple, electromagnetic interference, is made attendance and gate function logic judgment mistake, is made It malfunctions at switch motion, routine use error rate is high.

Therefore, the prior art is defective, needs to improve.

Utility model content

Solve the problems, such as that device is more by optimizing circuit the technical problem to be solved by the utility model is to provide a kind of, Simplify work-based logic, accentuator anti-interference ability optimizes the influence etc. for solving working environment to product to existing ESD protection Problem, and the integral control circuit of lower-cost attendance gate inhibition.

The technical solution of the utility model is as follows: a kind of integral control circuit of attendance gate inhibition, for obtaining somatic fingerprint And the fingerprint sampling module of corresponding finger print information is exported, it further include by the finger print information of fingerprint sampling module output and pre- The switch module that the finger print information deposited is compared and output opening signal is opened when such a match occurs with access control；Wherein, The finger print information output end of the fingerprint sampling module is connect with the finger print information input terminal of the switch module, the switching molding The opening signal output end of block is connect with the opening signal input terminal of the gate inhibition.

Applied to above-mentioned technical proposal, in the integral control circuit of the attendance gate inhibition, the switch module include: CPU, First resistor, second resistance, 3rd resistor, the first NPN triode, the second NPN triode, first capacitor, the second capacitor, third Capacitor, the 4th capacitor, diode and relay；

Wherein, the first end of the CPU is electrically connected with the finger print information output end of fingerprint sampling module, the second end of CPU It being electrically connected by first resistor with the base stage of the first NPN triode, the base stage of the first NPN triode is also grounded through first capacitor, First NPN triode emitter is also grounded, and the first NPN triode collector meets VCC power supply, while the first NPN through second resistance Transistor collector is electrically connected through 3rd resistor with the second NPN transistor base, and the second NPN transistor base is also through the second capacitor Ground connection, the second NPN triode emitter is also grounded, and the second NPN triode collector is electrically connected with relay, and VCC power supply is through the Two resistance are electrically connected with the first end of relay, while relay and diodes in parallel, diode anode are electrically connected with second resistance Connect, diode cathode through the 4th capacity earth, third capacitor it is in parallel with the 4th capacitor and with VDD power electric connection, VDD power supply is straight It connects and is electrically connected with the second end switch module of relay.

Applied to above-mentioned each technical solution, in the integral control circuit of the attendance gate inhibition, the switch module setting There is magnetic bead, the first end of the magnetic bead is electrically connected with second resistance, and the second end of the magnetic bead and the first end of relay are electrically connected It connects.

Using the above scheme, circuit of the utility model to the switch control module in the integral control circuit of attendance gate inhibition Optimize, simplify its work-based logic, accentuator anti-interference ability, can adapt to various working environments, and cost compared with It is low.

Detailed description of the invention

Fig. 1 is that the module of the utility model connects block diagram；

Fig. 2 is the circuit diagram of the switch module of the utility model.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.

It is that the module of the utility model connects block diagram such as Fig. 1；It is the switch module of the utility model such as Fig. 2 Circuit diagram.

The integral control circuit for present embodiments providing a kind of attendance gate inhibition, for obtaining somatic fingerprint and exporting corresponding The fingerprint sampling module 101 of finger print information further includes by the finger print information that the fingerprint sampling module 101 exports and the finger prestored The switch module 102 that line information is compared and output opening signal is opened when such a match occurs with access control 103；Wherein, The finger print information output end of the fingerprint sampling module 101 is connect with the finger print information input terminal of the switch module 102, described The opening signal output end of switch module 102 is connect with the opening signal input terminal of the gate inhibition 103.

It should be noted that switch module 102 is previously stored with finger print information.Fingerprint sampling module 101 carries out fingerprint It acquires and exports the collected finger print information of institute to switch module 102.When switch module 102 receives fingerprint sampling module When the finger print information of 101 outputs, switch module 102 can compare received finger print information and the finger print information prestored It is right.When the finger print information received and the information matches prestored, switch module 102 exports opening signal to gate inhibition 103, gate inhibition 103, which execute door opening action, opens gate inhibition；When the finger print information received is mismatched with the finger print information prestored, switch module 102 without opening signal export, gate inhibition 103 be then not carried out out act, gate inhibition remains off.

Specifically, as shown in Fig. 2, the switch module 102 is provided with CPU, first resistor R1, second resistance R2, third Resistance R3, the first NPN triode Q1, the second NPN triode Q2, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th Capacitor C4 diode D1 and relay；

Wherein, the first end of the CPU is electrically connected with the finger print information output end of fingerprint sampling module 101, and the second of CPU End is electrically connected by first resistor R1 and the base stage of the first NPN triode Q1, and the base stage of the first NPN triode Q1 is through the first electricity Hold C1 ground connection, the first NPN triode Q1 emitter is also grounded, and the first NPN triode Q1 collector connects VCC electricity through second resistance R2 Source, while the first NPN triode Q1 collector is electrically connected through 3rd resistor R3 with the second NPN triode Q2 base stage, the 2nd NPN tri- Pole pipe Q2 base stage is also grounded through the second capacitor C2, and the second NPN triode Q2 emitter is also grounded, the second NPN triode Q2 current collection Pole is electrically connected with relay, and VCC power supply is electrically connected through second resistance R2 with the first end of relay, while relay and diode D1 is in parallel, and the anode of diode D1 is electrically connected with second resistance, and the cathode of diode D1 is grounded through the 4th capacitor C4, third capacitor C3 it is in parallel with the 4th capacitor C4 and with VDD power electric connection, VDD power supply is directly electrically connected with the second end of relay.It should say Bright, the first end and second end of relay are control terminal, when the conducting of first end and second end circuit, the electromagnetism of relay Iron generates magnetic.When first end and second end circuit disconnects, the electromagnetism ferromagnetism of relay disappears.

Principle is as follows: when the finger print information prestored in the finger print information and switch module 102 that fingerprint sampling module 101 exports When matching, the CPU in switch module 102 makes operation and exports a low level, at this time the first NPN triode Q1 and the Two NPN triodes are in closed state, then VCC power supply is grounded through second resistance R2 and the first NPN triode Q1.Therefore, VCC electricity The voltage of voltage ratio VDD power supply of the source after second resistance R2 is low, at this time tri- pole of VDD power supply, relay and the 2nd NPN Pipe Q2 constitutes a turning circuit, wherein the second NPN triode Q2 emitter ground connection.In this way, the electromagnet of relay is powered, Electromagnet generates electromagnetic force, and armature is attracted to move toward electromagnet direction, thus the normally opened circuit NO of closing relay, and normally opened electricity The door opening action circuit of road NO connection gate inhibition 103, so that gate inhibition 103 be made to open.

When the finger print information prestored in the finger print information and switch module 102 that fingerprint sampling module 101 exports mismatches, CPU in switch module 102 makes operation and exports a high level, at this time tri- pole of the first NPN triode Q1 and the 2nd NPN Pipe Q2 is in an off state, and the electric current of VCC power supply flows to relay through second resistance R2, still, due to being provided with two poles Pipe D1 is in parallel with relay, so, VCC electric current flows directly into diode D1 after second resistance R2, and electric current is flowed from diode D1 It is grounded after out by the 4th capacitor C4.Therefore, the electric current of VCC power supply will not flow to relay, and VDD power supply connects through third capacitor C3 Ground, the i.e. electric current of VDD power supply will not flow to relay.In this way, the electromagnet no power in relay, relay is in normally closed Circuit NC, and the shutdown actuating circuit of normally-closed circuit NC connection gate inhibition 103, i.e. gate inhibition are always maintained at closed state.

More further, as shown in Fig. 2, in order to reinforce the anti-interference ability of switch module 102, the switch module 102 It is provided with magnetic bead FB1, the first end of the magnetic bead FB1 is electrically connected with second resistance R2, the second end and relay of the magnetic bead FB1 The first end of device is electrically connected.

Principle is as follows, when magnetic bead FB1 is added between relay and second resistance R2, can be good at eliminating VCC power supply The high-frequency noise and spike of generation interfere, while can also electrostatic pulse in absorbing circuit, it is ensured that switch module 102 receives To finger print information match with the finger print information that prestores when relay be in energized state, and relay when fingerprint mismatch Device is in off-position, and gate inhibition 103 is made accurately to execute the movement opened the door and closed the door.

Using the above scheme, circuit of the utility model to the switch control module in the integral control circuit of attendance gate inhibition Optimize, simplify its work-based logic, accentuator anti-interference ability, can adapt to various working environments, and cost compared with It is low.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims (3)

1. a kind of integral control circuit of attendance gate inhibition is adopted for obtaining somatic fingerprint and exporting the fingerprint of corresponding finger print information Egf block, it is characterised in that: further include carrying out the finger print information of fingerprint sampling module output with the finger print information prestored Compare and export when such a match occurs the switch module that opening signal is opened with access control；Wherein, the fingerprint sampling module Finger print information output end connect with the finger print information input terminal of the switch module, the output of the opening signal of the switch module End is connect with the opening signal input terminal of the gate inhibition.

2. the integral control circuit of attendance gate inhibition according to claim 1, it is characterised in that: the switch module includes: CPU, first resistor, second resistance, 3rd resistor, the first NPN triode, the second NPN triode, first capacitor, the second capacitor, Third capacitor, the 4th capacitor, diode and relay；

Wherein, the first end of the CPU is electrically connected with the finger print information output end of fingerprint sampling module, and the second end of CPU is passed through First resistor is electrically connected with the base stage of the first NPN triode, and the base stage of the first NPN triode is grounded through first capacitor, the first NPN Transistor emitter is also grounded, and the first NPN triode collector connects VCC power supply, while the first NPN triode collection through second resistance Electrode is electrically connected through 3rd resistor with the second NPN transistor base, and the second NPN transistor base is through the second capacity earth, and second NPN triode emitter is also grounded, and the second NPN triode collector is electrically connected with relay, VCC power supply through second resistance with after The first end of electric appliance is electrically connected, while relay and diodes in parallel, diode anode are electrically connected with second resistance, diode yin The 4th capacity earth of pole, third capacitor it is in parallel with the 4th capacitor and with VDD power electric connection, VDD power supply is directly and relay Second end electrical connection.

3. the integral control circuit of attendance gate inhibition according to claim 2, it is characterised in that: the switch module is provided with The first end of magnetic bead, the magnetic bead is electrically connected with second resistance, and the second end of the magnetic bead is electrically connected with the first end of relay.