Abstract
In the past decade automotive industries faced the exponential increase of in-vehicle electronic devic es. The hydraulic systems are replacing with sophisticate e lectronic systems. Market demands for exploiting ne w in-vehicle technologies such as multimedia systems, internet access, GPS, Mobile communication, intern al private network; engine, body and power train intel ligent control and monitoring systems are increasin g daily. These new needs make the wire-harness as physical pathway for power and data more complex. The amount of different data types’ transmission in veh icle networking requires higher bandwidth and subsequently applying expensive and advanced equipment. Also more functions and facilities lead to rai se the number of Electronic Control Units (ECU). The high cost of manufacturing and implementing all mentioned equipment and systems only can be justifi ed to luxury vehicle’s high prices. This study pres ents a conceptual model of in-vehicle networking which would lead to apply considerable portion of these advanced systems in non-luxury vehicles. In this co ntext, Polymer Optical Fibers (POF) exploited to achieve high speed bandwidth and cost-effective sol ution to transfer huge amount of data and one ECU to control and manage body/cabin electronic devices . Regarding to technical specification of POFs and using visible light as data carrier, they can meet all new needs of implementing modern expected technologies for non-luxury cars at inexpensive sol ution. In addition, POFs are easy-to-use, reliable and flexible in compare with silica base optical fi bers. This study suggests three red, blue and green lights for transferring video/audio, communication data network such as internet/vehicle internal network and body/cabin command lines respectively. Moreover, this concept model claims for reducing wire-harness with integration of command l ines into multiplexed POF line. By command lines integration also it is possible to merge seve ral power lines into one load calculated and shared power wire along the vehicle. After that, this conc eptual model can decrease the amount of different connectors and control switches in car electronic s ystems. At last, this solution can effects on all s teps of vehicle design, manufacturing and assembly proce ss, especially in electronic section.
Highlights
INTRODUCTIONFirst generation of computer embedded systems in vehicles came to exist and it was huge evolutionary step in high speed data exchange and processing for improving control and monitoring methods
This study presents a conceptual model of in-vehicle networking which would lead to apply considerable portion of these advanced systems in non-luxury vehicles
By command lines integration it is possible to merge several power lines into one load calculated and shared power wire along the vehicle. This conceptual model can decrease the amount of different connectors and control switches in car electronic systems
Summary
First generation of computer embedded systems in vehicles came to exist and it was huge evolutionary step in high speed data exchange and processing for improving control and monitoring methods Semiconductors made it possible to produce more cost-effective and smaller electronic components and reducing cost of design, production and manufacturing process, installation and implementing, man power and at last power load. Some automotive companies like BMW, Mercedes Benz, Chrysler, Audi and GM have used fiber optic technology to upgrade data transmission speed and modify their wire harness, but no work has done for make cost-effective solution for non-luxury cars. In recent years, these companies are cooperating for exploiting new standard so-called Media Oriented Systems Transport (MOST) to respond bandwidth hungry in-vehicle networking. Section state-of-the-art presents new concept of Wire-harness which it is the main approach of this study and at last the concluding of the study
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