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The Research and Application of Bluetooth-Based Fault Diagnosis System

Author: XuLanLan
Tutor: PeiRun
School: Harbin Institute of Technology
Course: Control Science and Engineering
Keywords: Troubleshooting Bluetooth CAN HCI ISO15765
CLC: TP277
Type: Master's thesis
Year: 2009
Downloads: 86
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Abstract


Bluetooth is a short-range wireless data communication technology, wireless communication technology, data communications technology, computer technology and network technologies. Bluetooth can be used instead of numbers wired cable connection between devices in automotive electronic device has good application prospects. In this paper, the Bluetooth communication technology design fault diagnosis system, diagnostic equipment, and was diagnosed with a wireless connection between the vehicle and troubleshooting. This paper first introduces the research background, an overview of the basic concepts of automotive fault diagnosis, analysis of automotive fault diagnosis system is designed to solve the problems and the research status at home and abroad. Also gives the main purpose of this research and its significance. Based on the complexity of the Bluetooth protocol, the second chapter introduces the basic concepts of Bluetooth technology, the Bluetooth communication protocol in-depth analysis, analysis of the characteristics of Bluetooth technology and Bluetooth application characteristics, the Bluetooth software interface for subsequent analysis and design made the necessary knowledge to prepare. This chapter will be applied to the Bluetooth technology to fault diagnosis system is given based on Bluetooth technology, fault diagnosis system design methods. Diagnostic communication module microprocessor uses ST's ST72F561AR9, Bluetooth module using Ericsson's ROK101008. Taking into account different vehicle bus, the article gives the CAN, LIN, K three kinds of bus interface design. Meanwhile, in the Bluetooth HCI (Host Controller Interface) conducted a comprehensive analysis, the UART interface is given based on the transmission mode and peer to peer communication processes. For the diagnostic communication module hardware design and software architecture, this paper also gives a detailed description of the design. Finally, LabVIEW-based fault diagnosis system designed Bluetooth diagnostic interface. Complete diagnostic communication module and diagnostics data exchange between vehicles is an important technique to achieve fault diagnosis. How can implement Bluetooth and CAN data transformation while ensuring diagnostic communication module and diagnostics diagnostic information transfer between vehicles meet the diagnostic specification is system implementation problems to be solved. This chapter describes and analyzes the network layer diagnostic protocol ISO15765 technically achieve a data transceiver, split the data, the data reorganization, flow control management, timing, processing and error handling software design. Bluetooth and the CAN according to different data formats, realized between the two data conversion. Finally, the network layer software has been tested to verify the design meets the requirements of diagnostic criteria. Enabling Bluetooth fault diagnosis system. This chapter will bluetooth diagnostic system applied to the diagnosis window motor current, motor current to achieve the BIT algorithm redesign. The article first analyzes the motor current BIT diagnose problems in the fuzzy fault pattern recognition method. Then, in the fuzzy fault diagnosis algorithm based on the cause of the fault is given threshold algorithm and achieve the overall software design. Finally, the use of Bluetooth-based fault diagnosis system, the design of the algorithm was validated to prove that the algorithm is reasonable.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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