Research And Application Of Smart Home Remote Control System Based On OpenWrt

With the development of science and technology,people's living standards have improved,and the demand for convenient and comfortable lifestyles has increased.People want to manage their home devices in a safer,more comfortable,more efficient and intelligent way,thus creating a demand for smart homes.However,traditional smart homes use wired cabling,remote control,and information security loopholes,which limit their own development to a certain extent.Based on the above two problems,combined with WiFi and Zigbee and mobile communication technology,this paper proposes a smart home remote control scheme based on OpenWrt operating system.The main work is as follows:Firstly,in view of the problem that the smart home can't be remotely controlled,this paper designs a smart home remote control system based on OpenWrt operating system.The OpenWrt operating system is the core of smart home,which completes between the Internet and Zigbee.The communication and video collection and transmission,Zigbee network is used to control the smart device,and the Android device acts as a mobile terminal to remotely control the smart home system.Secondly,based on the security problem in video transmission process,based on the analysis and summary of H.264 coded encryption region,a video encryption algorithm based on high-dimensional hyperchaotic Chen system and low-dimensional Logistic chaotic system combined with DNA coding is proposed.Considering the constraints between the security of encryption algorithm,encryption speed and compression ratio,the algorithm has non-zero DCT coefficients in intra macroblocks in H.264 and motion vector differences in inter macroblocks.The MVD is encrypted to achieve better encryption.Finally,in order to ensure the reliability of the system,the paper tests the system function.The test results show that the smart home system designed in this paper realizes the remote control of intelligent equipment and the function of environment monitoring and monitoring video encryption and decryption.