分布式无线土壤水分监测系统

Design of Distributed Wireless Monitoring System for Soil Moisture

以AT89C52为核心控制器设计了一种分布式无线土壤水分监测系统,系统包含1台主机和多台从机。从机选用土壤水分传感器DB171实时采集数据,然后将数字信号处理后,通过无线模块PTR2000发送给主机;主机通过循环寻址的方式分别与各从机建立无线通信,采用CRC校验方式检错,主机接收到从机发送数据后,经过计算处理在12864液晶屏上显示。实验表明:该系统灵敏度高,性能稳定,便携性好,可根据需求扩充多台从机,广泛推广。

This paper describes the design of a distributed wireless soil moisture monitoring system using AT89C52 as the core controller. The system consists of a master device and many slave devices. The host completes the real-time collec tion of soil moisture data using sensor DB171, and then the digital signal processing, through the wireless module VI＇R2000 is sent to the host. The host are connected with the wireless communication is established from the machine through the circular addressing mode, error detection using CRC check mode, receives the host computer sends data, through calculation and processing in the 12864 liquid crystal display screen. Experiments show that the system has high sensitivity, stable performance, good portability, can according to the demand of expanding multiple from the machine, and can be widely popularized.