Design And Realization Of Power Energy Management Terminal Base On ARM9

Embedded system is a special computer system, which is based on computer technology, centering on applications, and is optional in software and hardware. While embedded Linux system is an embedded operating system which is cut down from common Linux.Embedded products are mainly composed of embedded hardware and embedded operating system. Embedded Linux distinguishes itself among the existing operating systems owing to its open-source, possibility to transplant and mang other merits. And, there are various successful cases of transplantation into popular platforms, such as ARM's.The research is design and implementation of power management terminals which based on the at91sam9260 of embedded systems, first of all, gives the overall design principles and overall structure, and analysis of the choice of embedded software and hardware platform, and then gives the solution on the hardware such as CPU chip, communications module, as well as memory requirements, and designs its interface circuit, it introduces a build methods to construct the software development environment, gives detailed information on the management of end-use of electricity meters and the main station about the communication protocol and communication communication process.Bootloader is a section of code which after the power up of the system, before the operating system running, it is assumed to initialize the hardware and the dual responsibility to guide the operating system. This article detailedly analyses the hardware resources, planning of the address, and start-up procedures of the transplant platform of the bootloader. Then completes of the practice of transplantation of uboot, in addition to the basic functions of BootLoader, which guide the kernel image starting from flash, but also to achieve some of the extensions, such as, adding several uboot commands and debuging the programs by the USB port.The test results show that the design of power management terminal to meet the design requirements, the stability of the hardware circuit functions; in addition to the realization of the basic features of the meter reading, but also the realization of power, energy control, alarm, remote upgrade etc. comparing the terminals to the previous, the functions are more and as a result of using the Linux operating system to manage applications, so it has better stable performance, can be widely used in distribution transformer stations, factories and so on.