The Research And Design Of Intelligent Home Access Control System Based On PKE

With the rapid development of social economy and technology,people put forward higher requirements on the access control system,The traditional access control system mainly uses mechanical locks or swipe card authentication,and requires not only that the user must hold the hand and operate in close proximity,but also that the door key is easily copied by others and causes losses in terms of property and the like.Therefore,it is of great application value to develop a safe and convenient entrance guard system.In recent years,radio frequency identification(RFID)technology has been greatly developed and widely used in identification and security industries.Passive Keyless Entry(PKE)is a new type of remote control technology based on radio frequency identification(RFID).The user only needs to carry the transponder near the door and the door will open automatically.PKE system will automatically identify the user's identity.It is safe and convenient.The technology has been applied to many aspects,such as vehicle burglar detection,tire pressure detection and access control system.It has good research value.Therefore,this paper designs an intelligent home access control system with ARM+Linux as the platform and PKE technology as the core.This paper first discusses the development status of access control system at home and abroad.By analyzing the existing problems of access control system,it leads to the research significance of this topic.Secondly,the basic principles and key technologies of PKE system are studied and analyzed.The design of message format for PKE high and low frequency communication is completed.Aiming at the shortage of KEELOQ encryption and decryption algorithm introduced by MICROCHIP,we design and implement an improved KEELOQ+AES algorithm of rolling code encryption and decryption.Then,combined with the modules of the voice recognition module,fingerprint recognition module and camera module,the hardware circuit design and software design of the embedded terminal are completed.At the same time,the development and design of the server background and front-end are completed,and the remote monitoring can be realized through the Web front-end.Finally,the entire system is tested and summarized,mainly for PKE transponder power consumption,communication distance,encryption security,system stability,and server function and pressure testing.The test results show that the system runs stably and reliably,and meets the requirements of system design.