Embedded Remote Monitoring Terminal Design Based On UClinux Operating System

With the development of embedded technology, embedded system has been widely used in intelligent household electrical appliances, telecommunication, industry control, and automobile area. An excellent embedded system is the minimum system which can meet the goal. High quality, high reliability, low cost and low power loss are the main goals which are needed to achieve in the greatest scope during the embedded system design.Embedded system developing includes: system requirements analysis, system hardware choosing, hardware design, operating system choosing, device driver design, and user application developing. This paper introduces the design and implementation of the embedded remote monitoring terminal based on the remote control system project in the WuHan Grain Depot of the State Grain Reserves.UML is a system modeling language which can be easily defined and expressed and streamlines system programming. It supports unified format to express hardware and software, and implements hardware and software design simultaneous. The system used UML in the embedded remote monitoring terminal design.The hardware platform includes: the micro processor unit S3C44B0 which is an ARM7TDMI series CPU produced by the Samsung Corporation, system memory device such as 8M RAM and 16M NAND FLASH, peripheral interface such as serial port interface, network interface and man-machine interactive interface.Embedded Linux operating system has many features such as stability, high performance, and wide hardware support. Because of these features, embedded Linux is the main choice in the embedded operation system field. Module programming is used in the system software design which makes the system software design more structural.The system has many innovations including system requirements analysis, hardware choosing and integration, industry standard communication protocol application, wireless network and man-machine interactive interface design. The system used UML to accomplish requirements analysis, achieved man machine interchange based on MiniGUI and touch pad, finished scattered control and concentration management in the grain depot based on the GPRS wireless network. It enhanced the automatic level of the grain depot, and can be popularized in other homogeneous system.