毕业设计论文_多点温度巡回检测系统.docVIP

毕业论文 (2007届) 多点温度巡回检测系统 学生姓名： __*** 学 号： 院 系： 机电工程系 专 业： __自动化 指导教师： 完成日期： 多点温度巡回检测系统 摘 要 本设计为多点温度巡回检测系统，系统由上位机、下位机、通讯三部分组成。采用以计算机作为上位机，以单片机为核心的仪器作为下位机，再加上通讯来完成设计。该系统是利用多台下位机来采集分布在不同位置的温度值，实现多点的测量，通过网络与计算机通讯，解决了温度测量中分布与多点的问题，并且由计算机来实现对温度的集中监视与管理。多点温度巡回检测以计算机为平台设计的温度测量管理软件对整个系统进行统一管理，并对下位机可进行系统参数的设定；实现对多点温度的采集、数据处理、实时显示、报表，打印等功能。下位机主要以单片机AT89C52为核心，用Small Rtos51作为软件开发平台，实现对多点温度进行巡回检测，包括温度转换、温度设定、显示以及报警等功能，同时实现与上位机的通信。通讯采用串口的方式，以应用于电子控制器上的一种通用语言Modbus协议来实现，便于联网与网络管理。 关键词 温度检测；高精度；Small RTOS51；串口；Modbus  The cycling multi-point temperature detection system ABSTRACT The design of the cycling multi-point temperature detection system uses computers and microcontrollers as PCs and lower computers respectively, together with communications between them. This system adopts several lower computers to acquire the temperature, distributing in different positions, and solves the problem of distribution and different points in the measurement of temperature through computer communications network, monitoring and management of the temperature can also be reached. The cycling multi-point temperature detection system consists of PCs, lower computers and communications, and manages the entire system by software, realizing the functions just as acquisition, data processing, real-time display, report, print of multi-point temperature and so on. The core of lower computers is AT89C52 MCU. The software in the instrument adopts Small RTOS51. This part implements the cycling detection of multi-point temperature, including the functions of conversion, setting, display, alarm and communications. The communications bases on Modbus protocol, making use of serial port mode, and then puts interconnection and management of network into effect. KEYWORDS temperature detection; High precision; Small RTOS51; Serial Port; Modbus 目 录 中文