基于ARM11的电厂无线数据采集与控制系统软件设计与实现.docVIP

 基于 ARM11 的电厂无线数据采集与控制系 统软件设计与实现# * 5 10  摘要：本文设计了一套以传感器为数据采集单元，以 ARM11 开发板为主要数据处理单元的下位机和装有 组态软件的 PC 机为上位机的电厂无线数据采集与控制系统。开发板以 MODBUS RTU 协议为主要数据通 信格式，通过数字量和模拟量模块实时读取采集单元中的数据对其进行记录和分析，可独立完成设定控制 任务及功能。借助 GPRS DTU 的全透明传输方式，依托 GPRS 和 Internet 网络来进行上、下位机间的通讯， 实现了对数据处理与远程控制远程的实时性。将此系统用于某地下水系统的数据采集与控制，运行结果表 明，该系统可很好地完成设计任务，并能长时间可靠运行。 关键词：电厂；传感器；ARM11 开发板；MODBUS RTU；GPRS；上下位机 中图分类号：TP273 15 Software Design and Realization of Power Plant Wireless Data Acguisition and Control System Based on ARM11 JIN Hengyu, SHEN Jiong, LIU Xichui (Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of 20 25 30 35 40 Energy and Environment, Southeast University, Nanjing 210096) Abstract: In this paper，the software design of a wireless data acquisition and control system for plant which includes two main parts: the upper and lower machine were described. The lower machine that includes sensor as data acquisition unit and development board, i.e. the control unit and the upper PC with configuration software make the whole system. MODBUS RTU protocol is used as the data communication format in the lower machine and the development board reads real-time data through digital quantity and analogue module. After the recording and analyzing of data, the lower machine may complete some control task and realize some business functions independently according to the analysis results. GPRS DTU is used as the full transparency transmission and relying on GPRS and Internet networks the upper and the lower machine communicate with each other, so this system achieves data processing and controlling remotely and real—timely. It is useful and has a great significance, for after using, it shows its great ability in groundwater resource management. Key words: Power plant; Sensor; ARM11 development board; MODBUS RTU; GPRS; Upper and Lower machine 0 引言 电厂的很多实时性能指标反映了当前机组是否正常运行的状况，这些指标的获取通常是 通过运行人员对机组每个设备的工作状态进行测量并监控得到的，如温度、压力、流量、电 压、电流等。要实现某些偏远设备数据的实时测量和记录，显然人工的记录方法极不方