CN205211001U - Use access control system of electron password - Google Patents

Abstract

Use access control system of electron password belongs to the entrance guard field, the utility model discloses a solve the problem that all there are the defect separately in traditional mechanical lock and magnetic card access control system. The utility model discloses a controller, code keypad unit, doorbell input unit, reset circuit, LCD display module, entrance guard's executable module, alarm module and power, the code keypad unit is used for inputing the lock password, and the password output of code keypad unit links to each other with the password input of controller, if the input password is correct, the lock is opened through entrance guard's executable module to the controller, if input password mistake, controller are carried out the scene through alarm module and are reported to the police, the display the signal output end of controller links to each other with the demonstration signal input part of LCD display module, doorbell input unit's doorbell is pressed instruction output and the doorbell of controller and is pressed the command input end and link to each other, reset circuit provides the order that resets for the controller, the power provides working power supply for the controller.

Description

The gate control system of applying electronic password

Technical field

The utility model relates to a kind of electronic password lock, belongs to gate inhibition field.

Background technology

Today that science is growing, increasing substantially of people's living standard, people to living environment safe, conveniently there has also been more and more and more and more higher requirement, wherein lock is the staple product solving safety problem.Traditional mechanical key is unblanked, people often need carry many keys, use extremely inconvenient, and namely security has a greatly reduced quality after key loss, the agreeing with property mechanical hook-up that traditional door lock is only just simple, structure that let it be how complex rigid, its know-why is all too simple, people's total energy uses various method it to be opened, if the related door lock of key loss also will together be changed; In order to make up these shortcomings, create magnetic card gate control system, the unlatching of lock is controlled with magnetic card, various performance all improves, but the quantity of information stored due to magnetic stripe is little, and be easy between magnetic card and card reader produce mechanical wear, and card reader swipe the card mouth easily by outside destroy, its safety and reliability is just very limited thus.

Coded lock has the advantages such as security is high, cost is low, low in energy consumption, easy to operate by comparison; But traditional mechanical code lock, number of password is few, poor safety performance, cannot meet the demand of people;

Summary of the invention

The utility model object is the problem in order to solve traditional mechanical lock and all respective existing defects of magnetic card gate control system, provides a kind of gate control system of applying electronic password.

The gate control system of applying electronic password described in the utility model, it comprises controller, code keypad unit, doorbell input block, reset circuit, LCD display module, gate inhibition's execution module, alarm module and power supply;

Code keypad unit is used for input gate lock cipher, and the password output terminal of code keypad unit is connected with the Password Input end of controller;

If input password is correct, controller opens door lock by gate inhibition's execution module;

If input code error, controller carries out onsite alarming by alarm module;

The display output terminal of controller is connected with the display input end of LCD display module;

The doorbell of doorbell input block is pressed instruction output end and is pressed command input with the doorbell of controller and be connected;

Reset circuit provides reset command for controller;

Power supply provides working power for controller.

Advantage of the present utility model: the utility model adopts AT89C52 to be main control chip, display module have selected LCD1602, combine the peripheral circuits such as the matrix keyboard of designed, designed, alarm module, doorbell module, complete and a set of there is key-press input, display, unblock, warning, password amendment and the multi-functional door control system such as doorbell.Password input mode adopts button, and miscue and warning system adopt hummer to realize.The amendment of password can be carried out.By the input action of button, single-chip microcomputer judges that whether coded lock is opened; If password correctly, is opened, code error is not then opened, and three input errors then control hummer action and report to the police.

Accompanying drawing explanation

Fig. 1 is the theory diagram of the gate control system of applying electronic password described in the utility model;

Fig. 2 is the physical circuit figure of the gate control system of applying electronic password described in the utility model.

Embodiment

Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, the gate control system of applying electronic password described in present embodiment, it comprises controller 1, code keypad unit 2, doorbell input block 3, reset circuit 4, LCD display module 5, gate inhibition's execution module 6, alarm module 7 and power supply 8;

Code keypad unit 2 is for input gate lock cipher, and the password output terminal of code keypad unit 2 is connected with the Password Input end of controller 1;

If input password is correct, controller 1 opens door lock by gate inhibition's execution module 6;

If input code error, controller carries out onsite alarming by alarm module 7;

The display output terminal of controller 1 is connected with the display input end of LCD display module 5;

The doorbell of doorbell input block 3 is pressed instruction output end and is pressed command input with the doorbell of controller 1 and be connected;

Reset circuit 4 provides reset command for controller 1;

Power supply 8 provides working power for controller 1.

Controller 1 adopts model to be that the single-chip microcomputer of AT89C52 realizes.

Code keypad unit 2 adopts 4 × 4 matrix keyboards to realize, P1.0 ~ P1.7 pin of 8 output terminals difference connection control devices 1 of code keypad unit 2.

Keyboard circuit is for manipulating whole gate control system, and it comprises:

1, ten key, for arranging 6 bit digital passwords;

2, clear key, clearing password returns to original state;

3, acknowledgement key, confirms this time operation;

4, to close the door key, realize closing the door;

5, Modify password key, for arranging new password; Need during Modify password to verify Old Password, after pressing this key, prompting input Old Password, password is correct, the password that prompting input is new, has revised rear prompting successfully modified.

6, factory reset key.

4 × 4 matrix keyboards, its interface L1 ~ L4 is connected on single-chip microcomputer P1.0 ~ P1.3 pin respectively, interface C1 ~ C4 is connected on single-chip microcomputer P1.4 ~ P1.7 pin respectively, achieves the Password Input of door system, password is revised, removes, confirms, closes the door, the input of the function such as factory reset.

Doorbell input block 3 has been come by button S17, one end ground connection of button S17, the INT0 pin of another termination controller 1 of button S17.

Reset circuit 4 has been come by button S18, a termination power VCC of button S18, the RESET pin of another termination controller 1 of button S18.

LCD display module 5 adopts model to be that the display of LCD1602 realizes.

Gate inhibition's execution module 6 comprises PNP triode Q1, pilot lamp D1, resistance R2 and relay J 1, and the P0.0 pin of controller 1 connects the base stage of PNP triode Q1 and the negative electrode of pilot lamp D1, the grounded collector of PNP triode Q1 simultaneously; The emitter of PNP triode Q1 connects one end of relay J 1 coil, and the other end of relay J 1 coil connects power supply VCC, and the contact of relay J 1 controls the on off state of lock; One end of the anode contact resistance R2 of pilot lamp D1, the other end of resistance R2 connects power supply VCC.

Executive circuit, adopts single-chip processor i/o mouth output control relay to realize mechanical switch door, when numerical ciphers input correctly performs door opening action.Because the I/O mouth output current of AT89C52 single-chip microcomputer is too small, be not enough to drive relay to carry out work, so meet a triode Q1 at the P0.0 pin place of AT89C52, triode is utilized to amplify drive current, and by controlling the break-make of triode, come adhesive and the shutoff of pilot relay, thus the function realizing enabling and close the door.Relay J 1 is connected with single-chip microcomputer P0.0 mouth by triode Q1, to drive executive circuit.

Alarm module 7 comprises hummer BL, PNP triode Q2 and resistance R1, one end of 17 pin contact resistance R1 of controller 1, the other end of resistance R1 connects the base stage of PNP triode Q2, the grounded collector of PNP triode Q2, the emitter of PNP triode Q2 connects the negative pole power supply terminal of hummer BL, and the positive pole power supply terminal of hummer BL meets power supply VCC.

The port driver scarce capacity of 52 single-chip microcomputers, to drive hummer BL, so need to utilize triode to amplify drive current, thus allows hummer BL work sounding.In the design, pin P3.7 connects transistor Q2 base input end.When P3.7 exports high level " 1 ", triode Q2 conducting, electric current, through hummer BL, makes its work play sound; When P3.7 output low level " 0 ", triode Q2 ends, and do not have electric current through hummer BL, hummer BL does not work.

During enabling, Password Input mistake three times, triode Q2 conducting, electric current, through hummer BL, makes hummer BL normally work warning;

During Modify password, Old Password input error three times, triode Q2 conducting, electric current, through hummer BL, makes hummer BL normally work warning.

Claims (8)

1. the gate control system of applying electronic password, it is characterized in that, it comprises controller (1), code keypad unit (2), doorbell input block (3), reset circuit (4), LCD display module (5), gate inhibition's execution module (6), alarm module (7) and power supply (8);

Code keypad unit (2) is for input gate lock cipher, and the password output terminal of code keypad unit (2) is connected with the Password Input end of controller (1);

If input password is correct, controller (1) opens door lock by gate inhibition's execution module (6);

If input code error, controller carries out onsite alarming by alarm module (7);

The display output terminal of controller (1) is connected with the display input end of LCD display module (5);

The doorbell of doorbell input block (3) is pressed instruction output end and is pressed command input with the doorbell of controller (1) and be connected;

Reset circuit (4) provides reset command for controller (1);

Power supply (8) provides working power for controller (1).

2. the gate control system of applying electronic password according to claim 1, is characterized in that, controller (1) adopts model to be that the single-chip microcomputer of AT89C52 realizes.

3. the gate control system of applying electronic password according to claim 2, it is characterized in that, code keypad unit (2) adopts 4 × 4 matrix keyboards to realize, P1.0 ~ P1.7 pin of 8 output terminals difference connection control device (1) of code keypad unit (2).

4. the gate control system of applying electronic password according to claim 2, it is characterized in that, doorbell input block (3) has been come by button S17, one end ground connection of button S17, the INT0 pin of another termination controller (1) of button S17.

5. the gate control system of applying electronic password according to claim 2, it is characterized in that, reset circuit (4) has been come by button S18, the RESET pin of another termination controller (1) of a termination power VCC of button S18, button S18.

6. the gate control system of applying electronic password according to claim 2, is characterized in that, LCD display module (5) adopts model to be that the display of LCD1602 realizes.

7. the gate control system of applying electronic password according to claim 2, it is characterized in that, gate inhibition's execution module (6) comprises PNP triode Q1, pilot lamp D1, resistance R2 and relay J 1, the P0.0 pin of controller (1) connects the base stage of PNP triode Q1 and the negative electrode of pilot lamp D1, the grounded collector of PNP triode Q1 simultaneously; The emitter of PNP triode Q1 connects one end of relay J 1 coil, and the other end of relay J 1 coil connects power supply VCC, and the contact of relay J 1 controls the on off state of lock; One end of the anode contact resistance R2 of pilot lamp D1, the other end of resistance R2 connects power supply VCC.

8. the gate control system of applying electronic password according to claim 2, it is characterized in that, alarm module (7) comprises hummer BL, PNP triode Q2 and resistance R1, one end of 17 pin contact resistance R1 of controller (1), the other end of resistance R1 connects the base stage of PNP triode Q2, the grounded collector of PNP triode Q2, the emitter of PNP triode Q2 connects the negative pole power supply terminal of hummer BL, and the positive pole power supply terminal of hummer BL meets power supply VCC.