高精度水文数据采集终端的设计与实现

Design and Realization of Hydrologic Data Acquisition Terminal with High Precision

在水文监测过程中,需要采集、处理、保存和远程传输大量模拟信号,以实现对河流、水库的调度及宏观调控。所设计的高精度水文数据采集终端满足了水文数据野外现场自动采集的要求。该终端以STC89C58RD单片机为核心,配以16位A/D转换芯片AD7715、通用USB接口芯片CH375以及太阳能充电电源,实现了高精度水文数据的采集、处理及存储。通过反复测试与分析,验证了系统的性能。

In order to conduct macroscopic scheduling and regulation for rivers and reservoirs in hydrologic monitoring process, it is necessary to collect, process, save and transmit remotely huge amount of analog signals in high precision. The high precise hydrologic data acquisition terminal designed meets the requirements for field automatic hydrologic data collection, it is composed of single chip computer STC89C58RD as the core ; and equipped with 16-bit A/D conversion chip AD7715, USB interface chip CH375, and the power supply chargeable by solar energy. The terminal provides functions of data acquisition, data processing and storage.Through repeating test and analysis, the system has been verified its performance.