污水处理工程电脑测控系统研究.doc

摘要：污水处理工程电脑测控系统主要研究污水处理工程中，如何利用电脑测控技术，对水位、温度、PH值、流量等检测量进行数据采集，上位机通过PC测控软件Obtain_AU实现各站数据交换和显示，并通过控制单元控制电机实现进出水控制。该系统采用分布式结构，各下位机通过有线通信模块与上位机进行通信，其中有线通信采用RS_485或CAN总线标准，无线通信采用具有RS_232接口的无线数传模块或GSM/GPRS模块实现。该系统最主要的特点一是采用了嵌入式系统（嵌入式软PLC）代替PLC、工控板等传统的工业控制设备；二是采PC测控软件Obtain_AU代替普通的组态软件。本文主要介绍该系统的功能、软硬件设计方案以及软件各个模块的流程图，简要地分析了该系统设计的要点、难点及其实现方法。

关键词：污水处理；电脑测控；ARM；FPGA 

Abstract: Sewage Treatment disposal project of computer measuring and control technology system main sewage treatment works, the use of computer monitoring and control technologies, collecting data such as water level, temperature, PH value, flux and so on, master station exchange data with each station through Obtain_AU software of PC, and control MOTO with control unit.This system uses points of distributed. Each station connected to master station by wire communication module. and wire communication using the main line standard of RS_485 or CAN. And then wireless communication realize by including RS_232 interface operate module or GSM/GPRS module.

　　 The main characteristic of this system is that embedded system replaces the tradition industry control equipments of PLC and industry control board and the other is that uses measuring and control software obtain AU which owning the intellectual property rights by Mr liao who invented to replace normal configuration software.

　　 In this paper the system’s features and design aspects of programs introduced and flow sheet of each software module. Sample analysis the main point the difficulty and the realization of the system . 

Keywords: Sewage disposal；Computer Measuring & Control  ；ARM；FPGA

　　　随着计算机技术和仪表自动化的发展，小型的水处理池、泵站及一些小的厂站系统实现无人值守或少人值守己经成为必然趋势。这就要求具有经济、实用的监控系统。监控系统是指将厂站中的实时数据通过变送器变为电信号，在通过板卡或传感器采集，经过数字处理，转变为计算机可以处理的数字信号，在上位机处理后实时的显示出来，或通过这些数据得到相应的结论去控制过程对象的一种计算机控制系统。它可以完成实时远距离数据的实时显示，监控管理，越限报警，等功能。