Design Of Laboratory Access Control System Based On Internet

With the development of the society and the progress of science and technology,intelligent products are now used in many fields of the daily work and life.The development and popularization of the Internet further promotes the development of intelligent products and intelligent systems.As the first defense line of security in various fields,the development for intelligentization of access control system will become an inevitable trend.In view of the fact that many university laboratories still use the traditional locks to manage laboratories and to secure laboratory equipments,a laboratory access control system based on the existing system and the Internet is designed to improve laboratory management efficiency,to increase laboratory safety coefficient and to enhance the remote management of the laboratory in this paper.The laboratory access control system mainly consists of application software,terminal and experiment table.Application software refers to the program written in C# language and designed by three-tier architecture in an upper computer.It acquires information of registered users through fingerprint and IC card input module,and saves the data to the database of upper computer application software.The terminal takes STM32 as the core,adopts two identification: fingerprint identification and radio frequency identification,adopts AT24C128 chip as the memory to store the IC card information,the entry and exit time and the assignment information of the experiment table,and combines the ESP8266 module to design the wireless transmission module to realize remote and wireless data exchange between the terminal and the upper computer application software.The ZigBee module is used to build the laboratory intranet to achieve the real-time management of all laboratory tables in laboratory.The laboratory access control system overcomes the shortcomings of traditional access control system in real-time monitoring and remote control,and provides a management method for modern laboratory with high safety performance,simple operation and convenient use.This paper introduces the hardware and software design of the access control system and the main functional modules of the upper computer application software,and briefly describes the system function debugging and running test.The test results show that the laboratory access control system works normally and runs stably,with the advantages of simple structure,high safety performance,complete functions,remote control and real-time monitoring.