Bus Data Acquisition And Romote Monitoring System Based On CAN Bus And GPRS/3G

The bus industry is a special industry. Giving priority to the development of urban public transport is an important method to improve the traffic resource using efficiency of and ease traffic jams. It is also a fundamental measure to solve the "dilemma" of urban traffic, to implement energy saving, to development of circular economy and low carbon economy, to further promote building a resource-conserving and environment-friendly society.With the development of automobile electronic technology, bus vehicle electronics is becoming more and more diverse. At present, domestic bus vehicle electronic equipments is independent from each other. Generally, the vehicle manufacturer purchases these from the different electronic equipment manufacturers and install in vehicles according with orders. The following are the main bus vehicle electronics:(1)announcer (2) indoor/outdoor LED electronic guideboard(3) Engine operating condition monitoring unit (4) video and picture display unit (5) GPS system unit (6)video monitor, video recording by hard disk unit. These bus electronics are just independent "islands of information" and doesn’t form a system. Therefore, the operation of these devices needs to be done manually due to the low degree of intelligence. In order to solve bus electronics issues such as the electronic equipment’s single feature, the overall cost and complexity of operation, installation fragmented, inconvenient maintenance, the interaction between devices, it is necessary to form a system for all the electronic unit. bus vehicle terminal come into being.Bus vehicle terminal achieve bus condition information collection based on CAN, access to real-time bus running information. Meanwhile it solve the integration of electronic devices within bus body and the data communication between them. But now the bus need to exchange data, signals, and information with outside world. and a lot of information need wireless transmission, especially in the large cities. The bus system needs to be equipped with remote fault alarm, or function of remote scheduling. So GPRS/3G wireless module can be attached on bus terminal to realize wireless data transmission and bidirectional communication between mobile bus and remote monitoring and dispatching service center. Remote service center can track and monitor the mobile bus in real-time. And we can update the bus line information through remote service center.In this thesis we research on bus data acquisition and romote monitoring system based on CAN bus and GPRS/3G wireless module. The system can be divided into three parts to implement:the bus terminal; GPRS/3G wireless module; remote monitoring and dispatching service center. Described in detail the function of various parts. Including how does the bus terminal to achieve bus condition information collection based on CAN and integrate all various bus vehicle electronics into a good and complete communication system. How does GPRS/3G wireless module to achieve bidirectional communication between the bus terminal and the remote service center. How does remote service center monitor and schedule the bus.The general system is designed and analysed in this dissertation, bus intelligent systems is researched and developed from three aspects:the bus terminal, GPRS/3Gwireless module, remote service center.First of all, hardware description for the three parts of the system, bus terminal host CPU selection; Introduction of functional connected to bus terminal host (CAN to RS232module, station voice announcement module, video and picture display unit) The hardware selection for wireless module; The hardware selection for remote service center.Secondly, software design for the three parts of the system. Operating system selection for the bus terminal host, burning WinCE system for the bus terminal host, application software design for the host, software design for the CAN to RS232module, the wireless module software configuration.Finally, system integration and debugging.