Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Performance Analysis of Matching Layer for Level Measurement in CNG

CNG 레벨계측을 위한 Matching layer의 성능분석

  • Lee, Hongyoon (Department of Research & Development, Sewon Giyeon Co., Ltd) ;
  • Kim, Kwonse (Green Car Technology Institute, Kongju National University) ;
  • Choi, Dooseuk (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 이홍윤 (세원기연 연구개발팀) ;
  • 김권세 (공주대학교 그린카기술연구소) ;
  • 최두석 (공주대학교 기계자동차공학부)
  • Received : 2018.03.02
  • Accepted : 2018.04.20
  • Published : 2018.04.28
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Abstract

This work conducted the experimental analysis on ultrasonic acoustic matching in order to measure the accuracy of gaseous fuel level values. The experimental devices were used as 12V-DC supply, control T1 board, oscilloscope (DS01072B), ultrasonic probe and pattern table. The research models were designed by ceramic assay which can determine the transmitting and receiving energies. The result of the ringing area could verify the increased characteristics in the order of D (0.180m) < E (0.184m) < B (0.204m) < A (0.234m) < F (0.244m) < C (0.247m) models based on initial 2.9V of the maximum peak voltage. From the experimental results, the model designed by Ø21*3+2t of the matching layer was notable in that the most outstanding directivity energy could be created.

본 연구는 기체연료레벨 값에 대한 정밀도를 측정하기 위하여 초음파의 음향매칭에 관한 실험적인 분석을 수행한 것이다. 연구 모델은 송신과 수신에너지를 결정시키는 세라믹 어세이 (Ceramic Assay)의 구성요소에 의하여 설계되었다. 실험 장치로는 12V-DC 전원공급장치, Control T1 Board, 오실로스코프 (DSO1072B), 초음파 프로브 그리고 패턴테이블 (Pattern T)able이 사용되었다. 불감지영역에 대한 분석결과 최대피크지점인 2.9V의 시작점을 기준으로 D (0.180m) < E (0.184m) < B (0.204m) < A (0.234m) < F (0.244m) < C (0.247m) 모델 순으로 점차적으로 불감지폭이 증가되는 특성을 확인할 수 있었다. 실험결과로부터 매칭레이어 (Matching Layer)의 치수가 Ø21*3+2t로 설계된 모델에서 가장 우수한 지향성 에너지를 생성할 수 있었다.

Keywords

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