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Energy Consumption of In-Vehicle Communication in Electric Vehicles: A comparison between CAN, Ethernet and EEE
Linköping University, Department of Computer and Information Science, Software and Systems.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Energikonsumtion vid intern kommunikation i elbilar : En jämförelse mellan CAN, Ethernet och EEE (Swedish)
Abstract [en]

As a step towards decreasing the greenhouse gas emissions caused by the transport sector, electrical vehicles (EVs) have become more and more popular. Two major problem areas the EV industry is currently facing are range limitations, i.e. being restricted by the capacity of the battery, as well as a demand for higher bandwidth as the in-vehicle communication increases. In this thesis, an attempt is made to address these problem areas by examining the energy consumption required by Controller Area Network (CAN) and Ethernet. In addition, the effects of Energy-Efficient Ethernet (EEE) are reviewed. The protocols are examined by performing a theoretical analysis over CAN, Ethernet and EEE, physical tests over CAN and Ethernet, as well as simulations of EEE. The results show that Ethernet requires 2.5 to four times more energy than CAN in theory, and 4.5 to six times more based on physical measurements. The energy consumption of EEE depends on usage, ranging from energy levels of 40 \% less than CAN when idle, and up to equal amounts as regular Ethernet at high utilisation. By taking full advantage of the traits of Time-Sensitive Networking, EEE has the potential of significantly decreasing the amount of energy consumed compared to standard Ethernet while still providing a much higher bandwidth than CAN, at the cost of introducing short delays. This thesis provides insight into the behaviour of a transmitter for each of the three protocols, discusses the energy implications of replacing CAN with Ethernet and highlights the importance of understanding how to use Ethernet and EEE efficiently.

Place, publisher, year, edition, pages
2019. , p. 56
Keywords [en]
energy, power, consumption, in-vehicle, electrical vehicle, communication, protocol, CAN, Ethernet, EEE, TSN
Keywords [sv]
energi, konsumtion, elbil, kommunikation, protokoll, CAN, Ethernet, EEE, TSN
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:liu:diva-158278ISRN: LIU-IDA/LITH-EX-A--19/051--SEOAI: oai:DiVA.org:liu-158278DiVA, id: diva2:1332315
External cooperation
Broccoli Engineering AB, Göteborg
Subject / course
Computer Engineering
Supervisors
Examiners
Available from: 2019-07-01 Created: 2019-06-28 Last updated: 2019-07-01Bibliographically approved

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fulltext(986 kB)31 downloads
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CiteExportLink to record
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Citation style
  • apa
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Output format
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