低功耗远程数据采集模块的设计与实现

Design and Implementation of the Remote Data Acquisition Module with Low Power Consumption

针对污水流量测量存在测量点分散、测量现场与监控中心距离远、测量现场地处偏远交通不便、人工维护成本高以及效率低等一系列问题,设计了一套基于GPRS通信技术的污水流量计远程监控装置。该装置通过SIM900 GPRS模块连接到GPRS网络,采用超低功耗MSP430为控制核心,在低功耗待机和低成本传输基础上,实现对分散设备的集中控制和计量数据的采集功能。同时,通过RS-232、RS-485、频率信号、模拟4～20 mA等多种通信接口,实现与污水流量测量特有流量计的通信兼容。试验表明,该装置的监控性能稳定、续航能力优良、成本低廉,为国内污水流量计用户提供了一种新的运行和管理模式,具有明显的经济效益和推广应用价值。

Aiming at a series of problems existing in sewage flow measurement, e. g. , dispersion of measurement points, the long-distance between measurement site and the monitoring ＆ control center, traffic inconvenience, high cost man labor and low efficient maintenance, etc. the remote monitoring and control device of sewage flow measurement based on GPRS communication technology is designed. The SIMg00 GPRS module is adopted to connect the device and GPRS network, with the low power consumption MSP430 as the control core, on the basis of low power consumption standby and low cost transmission, the centralized control of dispersing devices and acquisition of measurement data are implemented. In addition, by using various communication interfaces, such as RS-232, RS-485, frequency signal, analog signal （ 4 - 20 mA） , the communication compatibility between monitoring and control system and the flowmeter typical to the sewage flow measurement is implemented. The experiment shows that the device features high stability, good endurable capability and low cost, and it offers a new running and management mode to the domestic users of sewage flowmeters, and possesses outstanding economic benefit as well as the values of promotion and applications.