The Access Control System Design
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Authors
Duan, Zheng
Issue Date
2016-04-29
Type
Presentation
Language
en_US
Keywords
Entrance controller , Reader lock , Access control
Alternative Title
Abstract
This poster describes the access control system. This design is better than the non-contact IC card form, the contact IC card form, the magnetic card form and other cards. It is based on RS232/485 communication to receive data and send data to achieve the control management, real-time monitoring, storage, abnormal alarm, access records query functions and storing 2000 users’ information. It also applies the modular design concept. With external IC card chip U2270B collection and analysis through STC12C5A60S2 master chip IC card number, the card can read and write as the range of 300-400mm. This system includes swiping card module; detection button and MCU pin, the pin is low level twice in a row to achieve the button pressed the button module; neither swiping card nor the button, the door opens to achieve mechanical door module; drive motor using a circuit composed of four NPN transistors, the output level to achieve the level of the motor forward and reverse functions, enabling the motor drive module.
In this design of access control, the circuit is simple, simple to apply, highly reliable, responsive, easy maintenance, wide application and low prices with wide ranges of application. It can be replaced in most cases the use of contactless IC card.