微机控制的无线粮仓监控系统

【作者】 徐世昌；

【导师】 仲崇权； 徐循；

【作者基本信息】 大连理工大学 ， 控制理论与控制工程， 2002， 硕士

【摘要】 本课题设计的是一套微机控制的无线粮仓监控系统，主要用于对粮库的粮情监控，以保证储粮的安全。 系统采用基于无线网络的设计思想和多CPU设计技术。无线传输避免了远距离布线所带来的施工困难，成本高的缺点。每个网络节点分机由2片单片机组成，单片机89C51作为主单片机完成测量和控制以及与通信单片机的数据通信等功能；通信单片机89C2051用于无线收发控制。各个温度测量点以智能终端的形式挂接在总线上，多条总线汇总到一起，由一台节点分机集中控制，每台分机负责一个粮仓的监控任务。在无线网络通信中制定了完备的通信协议，主控机调度工作形式。采用CRC校验技术检验数据，以保证通信的可靠性。主控机端单独设计了通信控制器，通过RS232C与计算机相连，研究了串行通信协议，可以连接到组态软件——组态王6.0中。用组态王软件开发了界面显示、告警、历史曲线显示和打印等功能模块。 本文完成了整个系统的软硬件设计，提出了一种可以应用于中小型粮仓的温度监控系统。更多还原

【Abstract】 This paper introduces a kind of wireless monitoring system controlled by computer, which is used to control the grain condition, and prevent the grain from rotting.The system adopts wireless network and multi-CPU technique. The wireless communication can avoid the shortcoming of remote wire transmission, such as large wastage, high cost etc. Each node is made up of two MCU. The main MCU (89C51) takes charge of measurement , control and communication with the communication MCU. The communication MCU (89C2051) is used to control receiving and sending data in the wireless communication. Many sensors are connected to one bus as intelligent terminals. The node controller gathers all buses. Each node controller is responsible for a granary. A complete communication protocol is defined in the wireless network communication. The host controller works as a dispatcher. CRC technology is adopted to verify data and guarantee the dependability in the wireless communication. The communication MCU is designed specially in the host controller. The host controller communicates with PC through RS232C. A serial communication protocol is defined, which can help the host controller communicate with the configuration software - the KINGVIEW, which runs in PC. The KINGVIEW is used to design the user interface, alarm log, historical curve showing and printing etc.The paper completes both the software and hardware design. At the same time, it puts forward a kind of temperature monitoring system that can be applied to the medium and small-scale granary.更多还原