毕业论文--单片机数据采集系统

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1、单片机数据采集系统 I 摘摘 要要 本文提出了一种基于多个 MCU 通信的实时数据采集系统方案，该系统由监控计算机 单元，数据处理单元，总线隔离器单元，接收单片机，数据采集单元组成。数据处理单元 与多个现场采集器为点对点的串行通信方式，在数据处理单元内部，各个通道的数据以双 CPU 并行通行方式进行处理，处理的结果以串行方式送入监控主机；同时在采集单元与处 理单元，处理单元与计算机之间采用 RS-485 总线进行数据的传送；对于采样的数据，通过 可编程键盘/显示接口 8279 芯片对数据进行显示，筛选，转存。实际运用证明，该方案具 有良好的实时性。 关键词关键词 数据采集处理系统；单片机（MC

2、U） ；串行通信；并行通信 单片机数据采集系统 II AbstractAbstract The text brings forward a sort of real-time data collecting system scheme，which is based on multi-MCU corresponding. The system consists of supervising computer cell, data processing cell, overall-insulating cell, incepting SCM and data collection cell. Th

3、e data processing cell and the multi-field collectors are serial communication which are one point opposite one point. Within the data processing cell, every passage data are processed in double CPU merge-capable transmission fashion. Then, the processing results enter the supervising host computer

4、in strand-capable fashion. At the same time， we transmit data with adopting RS-485 bus between the collection cell and the processing cell, and also between the processing cell and the computer. As to the sampling data, we display the data by programming keyboard /displaying 8279 CMOS chip, as well as filtrating and depositing the data with transferring fashion. Practicality mobilization proves this project has favorable real-time character. . Key words: data acquisition and processi