Design Of Embedded Remote Monitoring System Based On LwIP Protocol Stack

With the continuous development of Internet technology and embedded technology,embedded system with Internet as the core will be applied in all walks of life.Embedded device access network has become one of the topics that are widely concerned and studied.The research of this topic is such a remote monitoring system based on LwIP protocol stack and embedded system,which is composed of monitoring terminals,network servers,sensors and other devices.Firstly,this paper introduces the development of remote monitoring at home and abroad,and then puts forward a design scheme of embedded remote monitoring system based on LwIP protocol stack.The system adopts B/S monitoring mode,STM32F429 of ST company as the control unit of embedded hardware system,and FreeRTOS embedded operating system and LwIP network protocol stack as the software platform.Then the hardware design circuit of the system is introduced in detail,including the system block diagram,the minimum system circuit of the main control chip,the interface circuit of Ethernet module,display module and data acquisition module,etc.Then introduced the system software design process,the system uses STM32 CubeMX development platform and on this basis transplanted FreeRTOS operating system and LwIP protocol stack,introduced the process of designing operating system task and device driving software.Next,the thesis analyzes the operation mechanism of LwIP protocol stack in detail,determines the overall design of the system protocol,and completes the design of Web server,monitoring page and NTP client based on application layer protocol and Web page development technology.Finally,the system design scheme for the hardware and software is implemented,the system debugging is carried out and the implementation effect is analyzed and stated.The test results show that the system operates stably and meets the development requirements of remote monitoring of equipment.The development process and method of the system have certain application value.