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Design of System of Multibus Switch Based on Quantum Frame

Author: JiangWenChao
Tutor: YuanQuan；ZhangChengRui
School: Shandong University
Course: Mechanical and Electronic Engineering
Keywords: Quantum framework FlexRay Switch Finite state machine
CLC: TP311.52
Type: Master's thesis
Year: 2009
Downloads: 81
Quote: 1
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Abstract


Along with the continuous improvement of the performance of the car, the vehicle electronic control system applications become increasingly complex, which also contributed to the rapid development and wide application in automotive network technologies, the use of multi-bus technology to support the introduction of the electronic control unit in the car, thus greatly improve the safety and comfort of the car. Communication bus protocol must be done through the bus switch protocol conversion, and also gives the car the integrity to bring a lot of problems, such as poor maintainability, reliability is reduced, in particular, the introduction of new bus technology, the need for The existing switch large changes, even to re-design and development, thus increasing development costs, is not conducive to the openness of the vehicle network. This article uses the the quantum framework provides software bus platform design CAN / LIN / FlexRay multi-bus switch to increase the openness of the vehicle network system. The main contents are as follows: Research finite state machine and its specific implementation technology - quantum framework. Quantum framework is based on active objects as the basic constituent elements, all active object messaging through quantum framework to achieve. In an open system, the quantum framework plays the role of the software bus. This paper presents an open CAN / LIN / FlexRay multi-bus switch framework that does not depend on the controller and the type of operating system, you can open the software and hardware level. The paper presents a real-time design and overall design of the multi-bus switch. First introduced the principles and methods of the CAN bus synchronization mechanism. Secondly, on the basis of the brief introduction to FlexRay development of this new bus technology and features, discusses the principle of internal synchronization mechanism, and further analysis of the FlexRay network synchronization process from the point of view of the quantum framework - FlexRay node clock synchronization, and node early the beginning of the process, the real-time multi-bus switch design ideas, and hardware and software design of the proposed multi-bus switch. The article describes the hardware and software design of the multi-bus switch. A brief description of the basis on portable embedded operating system and software based on quantum framework bus configuration - run environment layer and system software layer, the paper analyzes the process of multi-bus switch various functions module state machine model based on quantum framework, operating system design model to study the design of the switch and verify the functionality and openness of the multi-bus switch, and through the establishment of a typical car network system instance.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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