Research And Application Of The Internet Of Things In Smart Home

This paper mainly studies the technology of the Internet of things in the smart home system application, after considering the current products on the market requirements and comparison of the performance and price of the key devices, STM32 MCU and Ethernet controller ENC28J60 as the core, the embedded real-time operation system, lightweight TCP/IP protocol stack, the original edge modulation flyback control technology, wireless communication technology and frequency hopping communication technology as the foundation, R & D a low cost smart home remote lighting control system.The remote control function of the system is realized through the Ethernet communication and wireless RF communication, design frequency hopping algorithm solves the in the process of the wireless communication data reliable transmission technology difficulties. And according to the requirements of intelligent home lighting system remote control function, design of wireless communication port circuit and a network module hardware circuit, design the original edge modulation flyback control circuit, constant current drive LEDs.A detailed study of the key technology involved in the system design process, including the basic principle of μC/OS-II embedded real-time operating system, Lw IP protocol stack kernel structure and solve the frequency interference in wireless communication of frequency hopping communication technique. And focus on the μC/OS-II operating system transplantation, Lw IP transplant protocol stack and operating system design task, analyzes the mathematical model of the frequency hopping communication and a detailed study of the frequency hopping algorithm.The system through the comprehensive application of μC/OS-II RTOS, 2.4G wireless communication technology, embedded protocol stack Lw IP, raw edge modulation flyback type control technology, frequency hopping communication technology, through theoretical research and market research, finally puts forward a set of function perfect, with network communication function of the smart home remote lighting control system solutions. After the system testing, the scheme has good real-time performance and reliability, has a good application prospect in the future.