Passive filter design supporting a star-like joint-connector-based topology in high-speed controller area networks

Abstract

In this paper, a passive filter is proposed to support a star-like topology in a high-speed controller area network and to extend the length of the stubs. A high-speed controller area network requires a linear wiring topology, while an actual network may be configured as a star-like structure using joint connectors owing to productivity and cost concerns. This joint-connector-based controller area network configuration is likely to suffer from increased signal distortions caused by a larger transient voltage and impedance mismatch. Here, a passive filter for reducing these signal distortions in a joint-connector-based controller area network structure is proposed, which allows a star-like topology with extended stubs. The proposed passive filter is composed of a resistor and bead in series, which is easily inserted in a joint connector. With the proposed filter, the induced transient voltage and settling time in transition to a recessive state were reduced by 37% and 66% respectively. Thus, the proposed filter has the effect of improving the reliability of communication in the same wiring dimension or, equivalently, lengthening the stubs with the same reliability.

Keywords

High-speed controller area network bus linear topology star-like topology joint-connector-based structure impedance mismatch transient voltage passive filter

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References

SAE J2284-3 High-speed CAN (HSC) for vehicle applications at 500 KBPS. Warrendale, Pennsylvania: SAE International, 2002.

ISO 11898-2. Road vehicles–controller area network (CAN) Part 2: high-speed medium access unit. Geneva: International Organization for Standardization, 2003.

Barranco

Proenza

Rodriguez-Navas

Almeida

. An active star topology for improving fault confinement in CAN networks. IEEE Trans Ind Inf 2006; 2(2): 78–85.

Silva

Ferreira

Fonseca

. Dynamic topology management in CAN. In: IEEE conference on emerging technologies and factory automation, Prague, Czech Republic, 20–22 September 2006, pp. 1222–1229. New York: IEEE.

Saha

. Active high-speed CAN hub. In: 11th international CAN conference, Stockholm, Sweden, 26–28 September 2006, pp. 8–14. Nuremberg: CAN in Automation (CiA).

Barranco

Proenza

Almeida

. Quantitative comparison of the error-containment capabilities of a bus and a star topology in CAN networks. IEEE Trans Ind Electron 2011; 58(3): 802–813.

Gessner

Barranco

Proenza

. Design and verification of a media redundancy management driver for a CAN star topology. IEEE Trans Ind Inf 2013; 9(1): 237–245.

Cena

Durante

Valenzano

. A new CAN-like field network based on a star topology. Comput Stand Interfaces 2001; 23(3): 209–222.

Cena

Valenzano

. A high performance field network based on a tree topology. In: 4th IEEE international workshop on factory communication systems, Västerås, Sweden, 28–30 August 2002, pp. 105–114. New York: IEEE.

10.

Waggershauser

. Advantages of CAN topology components in building automation systems, IXXAT Professional Articles, http://www.ixxat.com/download/artikel_building_automa_e.pdf (Accessed: August 2012).

11.

Philips Semiconductors. PCA82C250/251 CAN transceiver. Application Note AN96116, Philips Electronics, Amsterdam, The Netherlands, 1996.

12.

Pozar

. Microwave engineering report. New York: John Wiley, 1998, ch. 2.

13.

Lim

. Frequency-domain analysis of effects of a diverged interconnect design involved in high-speed front-end electronics. IEEE Trans Instrumn Measmt 2010; 59(10): 2779–2786.

14.

Best

. Shunt-stub-line impedance matching: a wave reflection analysis tutorial. IEEE Antennas Propagation Mag 2002; 44(1): 76–86.

15.

Lim

. Time domain analysis of physical wiring for a star-like topology in high-speed controller area networks. ProcIMechE Part D: J. Automobile Engineering 2013 (submitted).

16.

Dietmayer

Overberg

. CAN bit timing requirements. SAE paper 970295, 1997.

17.

NXP Semiconductors. TJA1050 high speed CAN transceiver. Application Note AN00020, NXP Semiconductors, Eindhoven, The Netherlands, 2006.

18.

Ott

. Noise reduction techniques in electronic systems. New York: Wiley–Interscience, 1988, ch. 7.