Design and Implementation of an OBU Code Generator for Telematics

• Main Authors: Wei-Syuan Jhang, 張偉鉉
• Other Authors: none
• Format: Others
• Language: en_US
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/25591965249390238399

碩士 === 逢甲大學 === 資訊電機工程碩士在職專班 === 98 === In recent years, a controller area network bus (CAN bus [28]) has been applied in many popular applications, such as automotive and industry. The bus can be used to connect the on-board unit (OBU) on a vehicle with other electronic devices. In the applications of telematics, we will encounter some problems, including how to design an OBU which fetch information from a vehicle; how to select an appropriate communication interface to send the fetched information to a server installed the Internet; how to shorten the time to market on software and hardware development; how to ensure the accuracy of software and hardware operations. We know to develop an OBU for an engineer. He spends a lot of time on study datasheets and reference many documents. Hence, the development time of OBUs needs a longer development time. In this thesis, we provide a faster method for automobile application engineers to develop an OBU and ensure the OBU operation to be correct. The engineers just focus in application development and do not care how to design drivers, an operation system, and hardware circuits. We had implemented a hardware and software platform in this thesis. The platform integrated communication interfaces including CAN, Bluetooth, and USB. We also develop a higher level scheme to generate the framework automobile telematics applications. The engineer can select features which he want and build the software framework in shortest time. These features are designed in modular. The engineers just modify the main program to implement their applications. Hence, a shorter development time is provided to design the automobile applications for telematics. In order to enhance the performance on an OBU, we also implement a tiny real-time operation system in the platform. Finally, we will verify the performance of the OBU in simulation by the tool of PRISM. The tool is a probabilistic model checker. We can create an abstract model of the platform, to verify the correctness of the proposed scheme by the tool. We compare the device with/without a real-time operation system. Experimental results show that OBU with an operation system has a better performance than the OBU without an operation system.