基于Web的嵌入式测控系统设计

发布时间：2018-08-16 14:23

【摘要】：随着计算机技术与互联网技术的高速发展,基于网络化的测控方式得到了广泛的应用,传统的控制系统与网络的融合也渐渐成为了一种必然趋势。本文应用计算机网络技术与嵌入式测控系统技术,设计了一个基于B/S架构的嵌入式Web远程测控系统。利用本系统工作人员可以使用手机、电脑等联网终端远程接收车间现场的数据并对现场设备进行控制设定。本系统主要包含三部分：Web服务器基站、Web客户端和前端数据采集子系统。Web服务器基站作为本系统的核心搭建在以S3C2440为核心处理器的嵌入式开发平台上,主要负责对数据的接收、存储、处理、转发以及Web网页动态交互。Web服务器基站通过CAN总线可以挂载多个前端数据采集子系统,并将各个子系统上传的数据通过路由器发送至Web客户端。由于本系统采用了B/S网络架构,所以Web客户端可以使用个人电脑、手机或者平板电脑等联网终端通过浏览器对服务器进行访问。通过Web客户端可以查看当前系统的运行状态、调整当前子系统指标参数,实现了对被控系统进行监控的目的。前端数据采集子系统是以C8051F040单片机为核心设计的独立系统,主要负责对被控对象的数据采集、处理、显示、控制及数据传输,前端子系统通过CAN总线与Web服务器基站相连接,保证了通信的可靠性与准确性。本文详细地阐述了Web服务器端程序的开发过程,Web客户端网页的编程思路及代码实现,以及前端数据采集子系统的软硬件设计。在深入研究并学习Web服务器、嵌入式测控系统、CAN总线等技术的基础上,以实验室水箱控制系统为被控对象,成功搭建了基于Web的嵌入式测控系统。在Web客户端实现了对被控系统液位、流量、重量等参数的测量、显示,以及对液位的PID控制、系统参数设定功能。整个课题取得了预期的效果。
[Abstract]:With the rapid development of computer technology and Internet technology, networked measurement and control methods have been widely used, and the integration of traditional control systems and networks has gradually become an inevitable trend. In this paper, an embedded Web remote measurement and control system based on B / S architecture is designed by using the technology of computer network and embedded measurement and control system. The system can be used by the staff to use mobile phones, computers and other networking terminals to remotely receive workshop data and control the field equipment settings. The system consists of three parts: Web client and front-end data acquisition subsystem. As the core of the system, the Web server base station is built on the embedded development platform with S3C2440 as the core processor, which is mainly responsible for receiving the data. Storage, processing, forwarding and dynamic interaction of Web Web pages. The base station of web server can mount multiple front-end data acquisition subsystems through CAN bus, and send the data uploaded from each subsystem to the Web client through the router. Because the system adopts the B / S network architecture, the Web client can access the server through the browser, such as personal computer, mobile phone or tablet computer. The Web client can view the running state of the current system, adjust the index parameters of the current subsystem, and realize the purpose of monitoring the controlled system. The front-end data acquisition subsystem is an independent system based on C8051F040 microcontroller, which is mainly responsible for the data acquisition, processing, display, control and data transmission of the controlled object. The front-end subsystem is connected with the Web server base station through the CAN bus. The reliability and accuracy of communication are guaranteed. In this paper, the development process of Web server-side program is described in detail, and the programming thinking and code realization of web client web page, as well as the hardware and software design of front-end data acquisition subsystem are described in detail. Based on the deep research and study of Web server, embedded measurement and control system can bus and so on, the embedded measurement and control system based on Web is successfully built by taking the laboratory water tank control system as the controlled object. The measurement, display, PID control and system parameter setting function of the controlled system such as liquid level, flow rate, weight and so on are realized in the Web client. The whole project has achieved the expected results.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.09

【相似文献】