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CNG 탱크 내 연료량 계측을 위한 송·수신 초음파 센서의 접촉면 변경에 따른 수신 감도 분석

Analysis of Receiving sensitivity according to Contact Surface Change of Transmit-Receiver Ultrasonic Sensor for Fuel Level Measurement in CNG Tank

  • 김남욱 (공주대학교 대학원 기계공학과) ;
  • 임석연 (동명대학교 자동차공학과) ;
  • 최두석 (공주대학교 기계자동차공학부)
  • Kim, Nam-Wook (Department of Mechanical Engineering, Graduate School, Kongju National University) ;
  • Im, Seok-Yeon (Department of Automotive Engineering, Tongmyeong University) ;
  • Choi, Doo-Seuk (Division of Mechanical &Automotive Engineering, Kongju National University)
  • 투고 : 2018.02.28
  • 심사 : 2018.04.20
  • 발행 : 2018.04.28

초록

본 연구는 송 수신 초음파 센서를 이용하여 CNG 탱크에서의 정밀한 연료량을 측정하기 위한 기초 연구로써 탱크내부 압력 및 초음파 센서의 접촉면 변경에 따른 수신감도를 분석하였다. 실험은 탱크와 센서의 접촉면을 점, 선, 면의 3가지 타입으로 변경하고 탱크 내부의 압력을 0 bar 부터 5 bar까지 1 bar 간격으로 충전하면서 측정을 진행하였다. 실험결과 탱크내부의 압력이 증가함에 따라 초음파 센서의 수신신호 값이 감소하는 경향을 확인할 수 있었다. 또한 탱크와 센서의 접촉면적이 증가할수록 수신 신호 값은 증가하지만, 노이즈 또한 증가하는 것을 확인 할 수 있었다. 이와 같은 실험 결과 초음파의 투과 특성을 이용하여 탱크내부의 기체 연료량을 측정할 수 있을 것으로 판단되며, 센서의 접촉면 변경을 통해 정밀성을 향상시킬 수 있을 것으로 판단된다.

This paper is studied, as basic research for measuring the accurate fuel amount of the CNG tank by using the transmit-receive ultrasonic sensor, the receiving sensitivity according to changed the pressure inside the tank and the contact surface of the ultrasonic sensor is analyzed. Measurement was carried out while changing the contact surface of the tank and the sensor to three shapes of Point, Line, and Surface and charging the pressure in the tank at an interval of 1 bar from 0 bar to 5 bar. Experiment results, as the pressure in the tank increased the tendency of the received signal value of the ultrasonic sensor to decrease was confirmed. As the contact area between the tank and the sensor increased, the value of the received signal increased, but the noise also increased. The results of experiment, it is judged that accuracy can be improved by changing the contact surface of the sensor.

키워드

참고문헌

  1. J. W. Jung, S. H. Song & K. B. Hur. (2016). Numerical study on effect of intake valve timing on characteristics of combustion and emission of Natural gas-Diesel engine. Journal of Energy Engineering, 25(2), 29-36. DOI : 10.5855/ENERGY.2016.25.2.029
  2. S. W. Lee, G. H. Lim, C. W. Park, Y. Choi & C. G. Kim. (2015). Characteristics of Combustion and Emission for Synthetic Natural Gas in CNG Engine. Journal of the Korean Institute of Gas, 19(6), 8-14. DOI : 10.7842/KIGAS.2015.19.6.8
  3. C. K. Kim. (2015). A Study on the Integrated Control and Safety Management System for 9% Ni Steel LNG Storage Tank. Journal of the Korean Institute of Gas, 14(5), 13-18. DOI : 10.7842/KIGAS.2015.19.6.8
  4. G. H. Yoo, J. L. Kim, T. S. Lee & J. H. Lee. (2011). Study of the Characteristics of Hydrogen-Gas Filling Process of Ultra-Light Composite Tanks for Fuel-Cell Vehicles. Transactions of the Korean Society of Mechanical Engineers, 35(7), 813-819. DOI : 10.3795/KSME.2011.35.7.813
  5. K. S. KIm, D. S. Choi, Y. C. Kim & J. U. Cho. (2013). Study on Relation of Optimum Resonant Frequencies between Piezo Ceramic and Matching Layer. Journal of the Korea Academia-Industrial Cooperation Society, 14(7), 3191-3196. DOI : 10.5762/KAIS.2013.14.7.3191
  6. D. K. Lee & Y. Cho. (2012). Deviation Characteristics of Clamp-on Type Ultrasonic Flowmeter Installed in Downstream of Valves. Journal of Fluid Machinery, 15(4), 12-18. DOI : 10.5293/KFMA.2012.15.4.012
  7. J. W. Kim, C. G. Kim, J. O. Kim & D. S. Kim. (2015). Comparison of Ultrasonic Paths for Flow Rate Measurement. Transactions of the Korean Society for Noise and Vibration Engineering, 25(7), 455-461. DOI : 10.5050/KSNVE.2015.25.7.455
  8. G. C. Park, S. H. Lee, C. S. Park, D. W. Kim, W. T. Kim & G. R. Jeon. (2014). Study on the Development of Sensors for Distance Measure Using Ultrasonic. Journal of Sensor Science and Technology, 23(1), 46-50. DOI : 10.5369/JSST.2014.23.1.46
  9. C. G. Piao, D. J. Kim & J. O. Kim. (2015). Energy Transmission of Elastic Waves in Ultrasonic Transducers. Journal of Sensor Science and Technology, 25(2), 124-132. DOI : 10.5050/KSNVE.2015.25.2.124
  10. S. H. Park, E. S. Kim & J. K. Jung. (2015). A Study on the Fabrication and Electrical Characteristics of Hydraulic Pressure Sensors by Using Ceramics Materials. Journal of the Korean institute of electrical and electronic material engineers, 28(6), 384-389. DOI : 10.4313/JKEM.2015.28.6.384
  11. Y. G. Son. (2016). The Effect of Liquid Height on Sonochemical Reactionsin 74 kHz Sonoreactors. Journal of soil and groundwater environment, 21(1), 80-85. DOI : 10.7857/JSGE.2016.21.1.080
  12. J. W. Kim. (2016). Ultrasonic Flow-Velocity Sensors Enabling Pipe Thickness Measurement Master dissertation. Soongsil University, Seoul
  13. H. J. Kim, K. S. Kim & D. S. Choi. (2017) Signal Analysis of Ultrasonic Sensor according to Pressure Change in CNG Tank Using Attenuation Characteristics of Ultrasound. Jour of Adv Research in Dynamical & Control Systems
  14. C. H. Kim, T. S. Kim, J. H. Jung, J. H. Lee & M. K. Lee. (2013) Development of Ultrasonic Sensor to Measure the Distance in Underwater. Journal of Korean Navigation and Port Research, 2013, 293-298.
  15. J. L. Hong & S. C. Lee. (2002) Development of the Ultrasonic Sensor for Gas Flowmeter. The Korean Institute of Electrical Engineers, 2002(6), 131-134.
  16. M. J. Kang, M. S. Han & J. W. Jang. (2017) Evaluation of convergence Elasticity of Liver Fibroscan used measurement with Ultrasonography. Journal of the Korea Convergence Society, 8(5), 79-85. DOI : 10.15207/JKCS.2017.8.5.079
  17. W. J. Hwang. (2015) A Study on Obstacle Avoidance Technology of Autonomous Treveling Robot Based on Ultrasonic Sensor Journal of The Korean Society of Industry Convergence, 18(1), 30-36. https://doi.org/10.21289/KSIC.2015.18.1.030
  18. S. H. Park & J. S. Kim. (2015). Optimal Power Maintain of Electric Wheelchair by using Applying Complementary Filter on the Smart Control Systeme. Journal of Digital Contents Society, 16(3), 355-363. DOI : 10.19728/DCS.2015.16.3.355