The Node Design Of Wireless Sensor Net Based On ARM System

With the rapid development of the embedded system and wireless technique having become the new technical hot, the characteristic of the embedded system is mini-type, special used, portable, high-reliable, so which is widely applied in these fields.With the function of the task that the embedded system works on growing, the traditional 8-bit MCU can't afford the request of the application. And system procedure are more and more complicate, thus the reliability and stability of system is difficult to be guaranteed with the traditional approach to program. It is the effective way of solving the problem that using the embedded operating system as the software platform. In this design, ARM microprocessor is selected in the hardware platform. ARM processor is a kind of advanced 32-bit embedded RISC microprocessor accredited in this field. The Multi-process handling operating systemμClinux is adopted in the software platform. Operating Systems can simplify the design by dividing the application into some tasks.μClinux is a kind of Multi-tasks and operation system which is especially designed for the microprocessor. It has many advantages, for example, its kernel source code is open, it is easy to learn, and it can be easily transplanted.In this paper, the main content is designing general communications platform based on ARM microprocessor LPC2210 and embedded aμClinux, expatiating the technology of realization and problems associated. LPC2210 selected in the design is 16/32 bit microprocessor produced by PHILIPS Company, which is the core processor of the system and providing good hardware base. This paper introduces the application ofμClinux in LPC2210 embedded system. CC1020 UART wireless module is selected as wireless transmission part, which can transmit data transparently. This project realizes the framework and software design.