基于无线数字传输的节水灌溉数据采集系统研究

Data acquisition system of water saving irrigation based on wireless digital transmission

采用灌溉数据实时采集实现节水灌溉自动控制是当今的发展方向之一。该系统介绍的为节水灌溉自动化系统中的无线数据采集子系统,利用nRF903收/发芯片实现数据的无线传输。该系统由采集和接收两部分组成:采集端将传感器的输出信号进行模数转换,利用无线数字传输技术将数据发送到接收端,在接收端对数据进行存储和显示。阐述了系统的总体结构,并从硬件和软件两方面描述了系统的设计及实现方法。实践证明,该系统使用灵活,数据传输可靠,适合不便连线的一般测试场合应用。

It is one of the directions to combine automation technology with water saving irrigation currently. In this paper, a wireless date acquisition subsystem of water saving irrigation automatization was introduced. The nRF903 single chip RF transceiver was employed to modulate and demodulate for data transfer. The system is made up of two separate parts： collection and reception. The collection part digitalizes the signal from the sensor and sends it out using wireless digital transmission technology. At the reception part, the data is received, saved and displayed. Hardware and software of the system are described, and experimental result indicates that the system is reliable and suitable for those testing situations with unavailable cable connection.