具備線傳控制防鎖死剎車之FlexRay/CAN車載通訊網路設計

The Design of FlexRay/CAN Vehicle Communication Network with Anti-Lock Braking System based on X-by-Wire

辜俊明(Chun-Ming Ku)

指導教授 ： 許永和

國立虎尾科技大學/電機資訊學院/資訊工程研究所/碩士(2013年)

摘要

隨著汽車工業的快速發展，車輛所搭載的感測器與電子控制單元(ECU)數目不斷增加，車載通訊網路所需的傳輸速率與資料量相對提高。有鑑於此，本論文開發出一混合型拓樸連接的FlexRay網路，藉由FlexRay高速車載通訊網路，開發出Throttle-by-Wire、Steer-by-Wire、Brake-by-Wire節點，進而實現Drive-by-Wire控制。本文針對現今主流車用網路CAN，開發出儀表與燈控節點，並設計一閘道器整合FlexRay網路以實現FlexRay與CAN網路間的資料通訊。
本研究針對車輛的主動安全部分，以車輛模擬軟體CarSim整合LabVIEW與相關介面卡，做為模擬測試車輛，並以此研發出具備FlexRay通訊的防鎖死剎車系統(ABS)節點。此節點透過FlexRay的高速通訊，可立即將ABS剎車的狀態與資料數據，傳送至FlexRay網路上，且藉由FlexRay Monitoring節點進行即時監測，爾後透過FlexRay/CAN閘道器轉換為CAN訊號，將資訊顯示於儀表節點上。
此外，為方便使用者進行監測，同時在Android手機上開發出ABS監測程式，透過藍芽通訊傳輸顯示各車輪速度與剎車壓力等資料。藉由嵌入式平台便利的操作與高可攜性的特色，本文使用Android嵌入式平台開發出車載通訊CAN網路檢測程式，可供使用者擷取目前CAN網路中的傳輸資料。

關鍵字

ECU ； FlexRay ； CAN ； Drive-by-Wire ； CarSim ； LabVIEW ； 藍芽 ； Android ； 嵌入式平台

並列摘要

The rapid deployment of vehicle industry, vehicles are equipped with more sensors and electronic control units (ECU) than before and their numbers were increasing. In this view, the required transmission rate and quantity of data are going to rise relatively. This paper integrate new vehicle communication network of FlexRay with that nowadays mainstream network of CAN. We constructed FlexRay network that connected by hybrid topology to exploit Throttle-by-Wire、Steer-by-Wire、Brake-by-Wire nodes and then to implemented Drive-by-Wire control. We exploited dashboard and lamp control nodes and to design Gateway for communication with FlexRay and CAN.
This study using CarSim combined with LabVIEW and interface cards to construct simulated test car for the active safety. To develop Anti-lock braking system (ABS) node based on FlexRay communication. The node could transmit state and data of ABS to FlexRay network immediately, that being monitored for real time by FlexRay monitoring node, and using FlexRay/CAN Gateway to convert to CAN network to show information on dashboard node.
Furthermore, we developed ABS Monitoring App on Android phone using Bluetooth to transmit data which are each wheel speeds and brake pressures, that would be more convenient for user. In addition to develop CAN Network Monitoring App on Android embedded platform, user could get communication data on CAN bus more convenience by embedded platform for easy operation and high portability features.

並列關鍵字

ECU ； FlexRay ； CAN ； Drive-by-Wire ； CarSim ； LabVIEW ； Bluetooth ； Android ； Embedded Platform

參考文獻

[1] FlexRay Communications System Protocol, 2006, Specification Version 2.1.

[2] FlexRay Consortium, http://www.flexray.com.

[3] 王銘儀，2007，“即時排程在10Mbps車用電子網路之應用”，國立中山大學碩士論文，台灣。

[4] CAN Specification 2.0A & 2.0B, 2002, http://www.can-cia.org/.

[5] 許永和，2010，第 4C 車載通訊電子網路之CAN/LIN 匯流排設計與應用，儒林圖書有限公司。