ARTICLES Automotive Design with iQBus CABLE DESIGN 3D AND FORMBOARD DRAWING iQBus interfaces to standard 3D CAD software (Catia E3D, ProCable etc.). All information that is already available in iQBus that is required in the 3D tool can be transferred and no redundant data entry is required. Once the positioning of the components has occurred and the wires are routed through the vehicle, additional geometrical information such as wire length and splice positions is available and can be back-annotated into iQBus. [Figure 12] 3D Cable Drawing shows the routing of wires and the position of components in the 3D car model. Geometric constraints could lead to packaging changes. Conclusion It always takes several prototype iterations to design a new system, especially when looking at design challenge as complex as introducing a new voltage level. Without an integrated design (2D/3D CAD) and analysis (CAE) flow this would a take long time and is very error prone. The articled outlined possible approaches to address some of these issues with iQBus and the Saber simulator together with other standard software. It took over 30 years to debug our existing 14V systems, and create databooks and design rules for them. We do not have the time for those hardware iterations again. <REFERENCES> /1/ VDI Systemengineering in der KFZ-Entwicklung, Dec. 1997, Wolfsburg, "Aufbau einer Integrationsplattform fuer physikalische Simulation", Wolfsburg, M. Paulini, BMW AG, Dr. G. Triftshaeuser, BMW AG, Dr. P. Willutzki, BMW AG, Joachim Langenwalter, Analogy Europe /2/ Networking and Communication in the Automobile, 28. - 29. March 2000, Munich Germany, "Kurbelwellen Starter Generatoren - High-tech der Stromversorgung", Prof. Dr. Ullrich Masberg, Continental ISAD Electronic Systems GmbH, Landsberg /3/ SAE Dependability Practices TOPTEC; 1-2 November 1999, "Automotive System Simulation, Power Window FMEA", Joachim Langenwalter, Analogy Europe, Thomas Heurung, Analogy GmbH /4/ "ANALYSIS AND OPTIMISATION OF AUTO-MOTIVE WIRE HARNESSES", January 2000, Andrew R. G. Patterson, Analogy UK Ltd. /5/ www.analogy.com, Analogy Inc., Beaverton Oregon USA /6/ Seoul 2000 FISITA World Automotive Congress, June 12-15, 2000, Seoul, Korea, "Harness Design Process - From Idea to Manufacture", Thomas Heurung Analogy GmbH, Joachim Langenwalter Analogy Inc., Paper Number(F2000A159) /7/ Networking and Communication in the Automobile, 28. - 29. March 2000, Munich Germany, "42V power net architecture", Dr. Philippe Desroches, Dr. Tilmann Seubert, Siemens AT AG <Biographies> Thomas Heurung has Masters Degree in Electrical Engineering from the University of Erlangen, Germany. Since 1997 he is working with automotive customers worldwide and since 2001 he is the product manager for Saberdesigner and VeriasHDL at Synopsys, Inc. To ARTICLE Top page <<Former To DESIGN WAVE MAGAZINE's Homepage (English) To CQ Publishing's Homepage (Japanese) Copyright(C) 1996-2003 CQ Publishing Co., Ltd.