分布式无线监测系统设计

针对传统的监测系统在监测点分散,分布范围广,监测点所处环境恶劣等情况下的局限性,设计了一种基于射频技术的分布式无线监测系统.以超低功耗单片机MSP430作为监测系统主控芯片,外围扩展多种处理模块,采用具有多信道的收发芯片nRF905实现无线数据传输.论述了系统设计软硬件的设计方案和分布式数据传输的通信协议,同时使用跳频机制,增加了数据传输的可靠性.研究表明,该系统使用灵活,移动性强,能对特殊环境多点的数据进行实时监测.

Design of the distributed wireless monitoring system

For the limitations of the traditional monitoring systems under the circumstances of dispersed monitoring points, wide distribution range and the harsh environment, a distributed wireless monitoring system based on radio frequency technique is designed. The system adopts the ultra low power consumption MCU MSP430 as the main control chip and extends several processing module in the periphery. In addition, the multi channel transceiver nRF905 is used for wireless data transmission. The software and hardware design scheme of the proposed system and the communication protocol for distributed data transmission are discussed. Frequency hopping mechanisms are employed to increase the reliability of data transmission. The results show that the proposed system has the characteristics such as flexible use and excellent mobility, while can monitor multipoint data in special environment in real time.