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자동차 저속 CAN 통신에서 와이어 결함 발생이 통신에 미치는 영향에 관한 연구 A Study on the Effect of Defective Wire on Communication in Low Speed CAN Communication of Vehicle

손성배, 이원섭, 최복록
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한국기계기술학회지 (韓國機械技術學會誌)
제24권 제2호 (2022.04)
pp.213-218
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

In the event of an defective wire in the low-speed CAN communication of vehicle, the problem had to be solved by relying on fault codes or using expensive measuring equipment. An experiment was conducted to analyze waveforms of communication circuits with wire conditions such as normal, short circuits in the main body, and mutual short circuits. When the controller drives the CAN transceiver and transmits a message, the voltage and current waveforms were measured using an OEM oscilloscope to check for abnormalities in the circuit. As a result, it was confirmed that when a defective wire occurs in low-speed CAN communication, the CAN driver can switch to the fail-safe mode to exchange normal messages.

키워드
Voltage waveforms(전압파형). Current waveforms(전류파형)Defective wire error(단선단락)RTH (CAN high 종단저항)RTL(CAN low 종단저항)DTC(고장 진단 코드diagnostic trouble code)OEM(original equipment manufacturer주문자 생산제품)CAN transceiver(CAN 트랜시버)ACK (acknowledgment응답신호)
저자
  • 손성배(강릉원주대학교) | Sung-Bae Sohn
  • 이원섭(강릉원주대학교) | Won-Seub Lee
  • 최복록(강릉원주대학교) | Bok-Lok Choi Corresponding author