Design And Research Of Measuring And Control System Based On CAN-Bus

According to the actual project named Geothermal Air Conditioning System In Olympic Forest Park, a measuring and control system based on CAN bus technology is introduced in the paper. In the system, virtual instrument technology, computer technology, communication technology, network technology and other advanced technologies are integrated used.First, the background of the subject is discussed in chapter 1; and then the paper sets out the direction of the research from the theoretical analysis in chapter 2; the design process of a measuring and control system is described in detail according to the actual project in chapter 3, and several important aspects in the process of carrying out the project are introduced in the last of this chapter; and then followed by the chapter 4, which describes the error correction process of the system according to the data collected.The design of the system is divided into two parts, software and hardware. The design of the hardware system is divided into three parts: upper control layer, the network communication layer and the intelligent testing node layer. The author effectively connected the different physical devices in three layers together in the same measuring and control network through the rational interface design and circuit design. The software system is completed in Labwindows/CVI, which is a development environment of virtual instrument and ANSI C. The control software is divided into three parts: user interface, drivers of the physical device and control of the data communications. The three parts are not only independent of each other, but also closely linked. Relying on a reasonable structure design and sequential design, they work together to control the whole hardware systems orderly and efficiently.The system makes good performance in practical engineering environment and realizes the real-time and remote measuring and control function. The final chapter of this paper does a summary and outlook of the design and research of this system.