The Design and Research of Remote Terminal Unit Based on Radio Technology

This paper describes the design and research of RTU based on GPRS. The function of instrument includes field information sampling, analysis and transmission. In hardware design, the MSP430 microcontroller and GR64 is adopted to improve systemic reliability. In software design, the software development environment of the instrument is a cross compiler (IAR Embedded Workbench) which is design for MSP430 micro-controller by IAR Company. The basic principle, the system composition, and the researches on key technological problems are presented in the paper. The practical results showed the system is stable and reliable. Compared with similar products, this design is characterized with simple hardware structure, powerful software functions, high reliability and low costs. This design can work at a temperature as low as -30 degC, and has a strong anti-jamming capability. Both theoretical and experimental results show that the RTU based on GPRS has favorable performance with low power consumption and high accuracy.