Papers by Keyword: CAN Bus

Abstract: Refer to the task allocating and optimization problem of distributed gas-electric hybrid control system, this paper establishes graph model of system hardware structure and application event of the distributed real-time control. The task allocation in distributed application process is abstract as mapping between those two sets. A task allocation scheme of minimum load bus is proposed from the angles of system bus and message mapping. Combined with the design of the gas-electric hybrid power system, genetic algorithm is adopted to solve the optimization problem, and the program verification and the bus analysis are carried out on the experimental bench. The test results show that the proposed scheme can satisfy all kinds of task constraints and resource constraints, the efficiency of the bus is improved, and consumption of resources is reduced.

Abstract: Plug-and-play satellite(PnPSat) means that when a plug-and-play device is inserted in the system, it can be detected and configured dynamically with no jumpers and software configuration in the process of runtime. PnPSat is going to be operating in Low Earth Orbit, so it must be quickly adjusted to meet different requirements and need standardized components. In terms of time and budget, integration is a significant time-consuming component of spacecraft development. This paper proposes a new network architecture which separates the link layer and the network layer so that the application on the top can be used without any effect when the link layer is changed. To meet the requirement of automatic configuration, we design a protocol cluster including device identification protocol and data transfer protocol and implement them on CAN bus. Compared with the Space Communication Protocol Specifications (SCPS), the protocol cluster is much more suitable for microsatellite with the characteristics of simple, reliable and easy to implement.

Abstract: To solve the problem of steering gear and its bypass electromagnetic interference to servo controller communication system. Design of a four-steering gear control system based on dual redundant communication CAN bus and RS422 bus communication. Analysis Method of voting dual redundant data communications. Introduction implementation of the servo controller. The experimental results show that this system has good fault tolerance and noise immunity.

Abstract: Discussed the structure feature, working principle, communication protocol and design of hardware and software of the intelligent measurement and control device based on CAN bus in this paper.

Abstract: The traditional lighting system has such shortcomings as wiring troubles, bad energy-saving effect, and inconvenient management and control and, with the rapid development of modern electronic technology, communication technology and computer network technology, can not meet the higher requirements on the the comfort, safety and energy saving aspects of modern buidings. The intelligent lighting control system originates from the organic combination of electronic technology, communication technology and computer network technology can effectively cantrol and manage the traditional lighting system. This paper mainly introduces the main technical aspects in intelligent lighting system including CAN bus technology application, system network design, intelligent relay, a control panel, a sensor and infrared remote control technology.

Abstract: Improving the real-time performance of CAN bus is the focus problem of in-vehicle network design. It can improve the efficiency of message transmission to meet the needs of system control requirement. This paper firstly put forward the message response time calculation method of CAN bus considering a periodic correction coefficient. Secondly, based on the message response time calculation method using periodic correction coefficient, the periodic scheduling algorithm was designed and researched, using nonlinear programming method. The efficiency of periodic scheduling algorithm was validated by an optimization example of hybrid electric vehicle message set. It can be used in the CAN bus optimization design stage, and as a guidance for the CAN bus system design.

Abstract: This paper accomplished a system of high-rise building’s fire monitoring system based on CAN bus. It is applied in avoiding the harm of leakage current , over current and short circuit, and protecting electric power distribution circuits and electrical equipment, thus to prevent the occurrence of electrical fire. The monitoring system can detect phase current signal and the leakage current signal, and can display real-time and alarm. It also can proceed network service and complete the distributed remote control and fault diagnosis. Practice shows that the system the characteristics of high precision, safe and reliable, low rate of false positives, easy operation and maintenance, etc .It can satisfy the demand of large high-rise building electrical fire.

Abstract: Aiming coal mine production conditions, and analyzing the characteristics of underground transmission information, combined with power line carrier technology and industrial field bus technology, designed dual transfer communication module based on power line carrier technology and CAN bus, and on this basis to achieve a bus monitoring network. This paper describes the design of communication module and the composition of the monitoring network, which provide a stable and reliable method for information transmission of underground coal mines.

Abstract: In this paper, 0.05 grade three-phase main control system of multi-station meter testing equipment (MTE) is presented. This design is based on the S3C2440 core board as the control core, and the software is based on Windows CE(WINCE) embedded operating system. The device is displayed and controlled by 7-inch Touch Screen. The main control system communicate with the error instrument and PC through Controller Area Network (CAN) bus, and the largest number of error instruments can connect to CAN bus is 100. The main control system communicates through RS232 bus with three-phase signal source and standard electric energy meter, through RS485 bus with programmable power amplifier. In this device, calibration of energy meters can not only through the PC software, but also use the main control system. Compared to the traditional design of the electric energy meter calibration device, the design’s the man-machine interface is more optimized, the number of electric energy meters can be test in the same time is more, faster communication, stronger anti-interference ability, and calibration is more efficiency.

Abstract: In order to realize monitor and control multiple fuel cell group, design a PEMFC monitoring and control system. The system uses LabVIEW as the computer software platform. By calling the USBCAN card’s driver, LabVIEW realize the communication with CAN bus; By connecting with each data acquisition and control module,the CAN bus can realize data acquisition and hardware control, so as to realize the monitoring and control of the fuel cell system by the computer.