A System Design For Monitoring And Meausring System Of The Grains Based On ARM9

The food problem is an important issue to the people's livelihood. It is important to grasp the quantity and quality of grain storage accurately, because it can help us to formulate policies and solve social issues.With the rapid development of semiconductor technology, more and more devices start using embedded processor, this paper also uses an embedded chip named ARM9. It presents a network-based multi-functional monitoring and measuring system of the grains. The measuring system is based on ARM9 embedded processor and the Linux operating system. The following paper gives a particular description of the hardware platform and software design.On the hardware design, this paper uses ARM9 based hardware platform to replace the traditional single chip as the processor in Grain monitoring system. This design proposal enhanced the system's monitoring functions and improved its compatibility.In software design, the author set up a software environment and made the appropriate drivers and its application. In the process of designing, some works have been done for example porting the boot loader and Linux kernel, the establishment of file system, writing device driver and its corresponding application of the temperature and pressure sensors.In addition, the embedded web server and some CGI program has been built on this system for remote query monitoring information. In this system, the author analyzed the situation of existing food surveillance system's advantages and disadvantages, and then introduced embedded systems to monitor the grain's situation. This design proposal takes advantage of the communications and network function of Linux to achieve the basic functions of the monitoring system, so it has some practical values.Finally, the paper gives the results of the monitoring system, analyzes the shortcomings of this system in software and hardware, and points out directions for the future research。...