Research On Household Intelligent Entrance Guard System Based On Embeddd System

In recent years,with the popularity of security equipment and smart home products,the demand for intelligent equipment is becoming more and more vigorous.As the most important part of smart home,intelligent door control has been strongly sought by the producers and users.Although the traditional access control system has the functions of video surveillance and remote control unlocking,there are many problems such as complex wiring and installation,difficult renovation and upgrading of old buildings,unclear monitoring screen and large power consumption.It has been unable to meet people's need for information intelligent and convenient life.Therefore,in view of the shortcomings of the traditional entrance guard and the improvement of the actual demand,a household intelligent door control system based on embedded Linux is proposed.In this paper,in view of the various problems of the traditional entrance guard,the research and improvement are carried out respectively.The main work includes the following aspects:(1)according to the needs of family security,an intelligent door control panel,which can be conveniently installed on the household security door,is designed.The original optical cat eye through hole on the security door is connected with the monitoring camera and the control panel through the FPC connection.At the same time,the display,touch,WiFi and image acquisition module of the intelligent access control panel is designed.With the full A64 chip as the main control chip of the gate control panel,the display,touch control,WiFi and the underlying driver of the camera are realized on the A64 development board.The end of each module is verified in a re PCB,and the function and power of the tests of intelligent access control system.(2)in view of the problem of short access time and high power consumption in intelligent access control,the human detection module is introduced on the basis of low power modules of various peripherals,and an improved low power sleep wakeup strategy is proposed.The intelligent access control system is in a dormancy state when it does not open the monitoring video function and unmanned operation at any time.When we need to see the real-time monitoring screen and the human detection module to detect the characters,we wake up the access control system for video monitoring and snapping.Without affecting the use of the main functions of the intelligent access control,the power consumption of the system is reduced and the working time is prolonged.(3)the reason for the complex wiring of the traditional entrance guard is that the communication and power supply of the entrance guard need to be cabled individually,and the installation of the lock is complex.The intelligent access control system used in this paper is powered by lithium battery,and the access control panel and electronic lock are used for wireless communication.The 315 Mhz wireless transceiver module is integrated on the intelligent door control panel,and the electronic lock supporting 315 Mhz wireless communication is selected.The electronic lock wireless communication protocol is realized on the door control panel,and the function of remote unlocking is finished.