Development of Leakage Current Sensor for Mobile Robot Chassis

이동 로봇 섀시 누전 모니터링 센서 개발

  • Kim, Cheong Worl (Dept. of Electronics Education, Andong National University) ;
  • Kwon, Ik Hyun (Dept. of Electronics Education, Andong National University) ;
  • Kim, Sung Deuk (Dept. of Electronics Education, Andong National University) ;
  • Lee, Young Tae (Dept. of Electronics Education, Andong National University)
  • 김청월 (안동대학교 전자공학교육과) ;
  • 권익현 (안동대학교 전자공학교육과) ;
  • 김성득 (안동대학교 전자공학교육과) ;
  • 이영태 (안동대학교 전자공학교육과)
  • Received : 2018.09.14
  • Accepted : 2018.09.19
  • Published : 2018.09.30

Abstract

In this paper, we developed a sensor for monitoring the leakage current through the chassis of the robot. The leakage current sensor needs to be developed because it is a necessary part to prevent electric shock accidents that may occur through the chassis of a robot or an electric vehicle. This leakage monitoring sensor was developed to be mounted directly on the chassis of the robot. This sensor protects the control system from noise by discharging static and high-frequency noise that may occur in the chassis of the robot and monitors the leakage current by measuring the amount of current discharged through the ground. In this paper, a leakage monitoring sensor was developed with a simple structure using resistors, capacitors and OP-AMP, and the performance was evaluated.

Keywords

References

  1. Michael B. Brenner, and Iain Weir-Jones, "Leakage current sensor," US Patent, US3555476A, 1968.
  2. Richard K. Thompson, and Emesto Sevilla, "Leakage capacitance compensating current sensor for current supplied to medical device loads," US Patent, US5436566A, 1992.
  3. Takahiro Kudo, Susumu Kuribara, and Yasuhiro Takahashi, "Wide-range ac/dc earth leakage current sensor using fluxgate with self-excitation system," SENSORS, 2011 IEEE, pp.512-515, 2011.
  4. K. Sato, O. Miki, M. Iida, and Nishikawa, "A current sensor using a hall generator for a low-voltage circuit breaker with a solid state tripping device," IEEE Trans. Power App. Syst., Vol. PAS-104, No. 7, pp. 1890-1896, 1985.
  5. Toshinori Iwata, and Manabu Ohta, "Device and method for determining intermittent short circuit," US Patent, US20030142449A1, 2003.
  6. Toru Tanaka, Kazuya Kobayashi, and Hiroyuki Ueyama,"Systems and methods for detecting shorts in electrical distribution systems," US patent, US20080212246A1, 2008.
  7. Kazuhiko Yamaguchi, "Ground fault detecting device for an ungrounded circuit," US Patent, US20140008970A1, 2014.