Journal of Practical Engineering Education (실천공학교육논문지)

Korean Institute for Pratical Engineering Education (한국실천공학교육학회)
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A Study on the Practical Engineering Eduaction through the Composition of the System for the Mitigation of Insomnia Using Aromatic Substance and Lighting

향기와 조명을 사용한 불면증 완화 시스템 구성의 사례를 통한 공학 교육 실천에 관한 연구

  • Jeong, Seong-Joo (Major in Electronic Engineering/Department of Electrical, Electronic and Control Engineering, College of Engineering, Kongju National University) ;
  • Lee, Jin-Yu (Major in Electronic Engineering/Department of Electrical, Electronic and Control Engineering, College of Engineering, Kongju National University) ;
  • Seo, Jeong-Eun (Major in Electronic Engineering/Department of Electrical, Electronic and Control Engineering, College of Engineering, Kongju National University) ;
  • Chang, Eun-Young (Major in Electronic Engineering/Department of Electrical, Electronic and Control Engineering, College of Engineering, Kongju National University)
  • 정성주 (국립 공주대학교 전기전자제어공학부) ;
  • 이진유 (국립 공주대학교 전기전자제어공학부) ;
  • 서정은 (국립 공주대학교 전기전자제어공학부) ;
  • 장은영 (국립 공주대학교 전기전자제어공학부)
  • Received : 2019.05.07
  • Accepted : 2019.05.21
  • Published : 2019.06.01
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Abstract

A specific example of how to practical engineering education was conducted through the results of the formation of an insomniac mitigation system using aromatic substance and lighting that were conducted over three semesters of a series of curricula related to the composition of graduation works and graduation thesis writing in electronic engineering majors is given as a criteria conditions to certify graduation. Propose the systematic process of the learning achievement process, having learned how to solve problems and to communicate on a team basis. In addition, is analyzed the results of the achievement satisfaction in the major courses conducted with the acquisition of knowledge in engineering, and confirmed that it was included in the level descriptor of engineering issues on the results of the performance measurement and learning in the curriculum.

대학 졸업 인증 기준으로 전자공학 전공에서 졸업작품 구성과 구성 결과에 대한 논문 작성에 관련된 일련의 교과과정을 3학기 동안 진행한 향기와 조명을 사용한 불면증 완화 시스템 구성 결과를 통해 이루어진 공학 교육의 실천 방법에 대한 구체적 예를 제시한다. 시스템 구성 과정에서 발생한 문제들의 해결 방법과 의사 전달 및 결정 방법을 팀 단위로 체득하면서 이루어진 학습 성취 과정의 체계적 구성을 제안한다. 또한 공학 지식 습득과 함께 이루어진 전공 과정의 성취 만족도를 조사 분석하였고, 교과과정의 학습성과 성취도 측정 결과에 대한 공학문제 수준설명(Level Descriptor)도 만족함을 확인하였다.

Keywords

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그림 1. 개념 구성도 Fig. 1. Concept schematic diagram.

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그림 2. 손가락 측정 반사형 광전용적맥파 (a) 동작원리, (b) 측정 모듈 앞면, (c) 측면 모듈 뒷면 Fig. 2. Optical finger PPG (a)principle of movement (b) the top side of module (c) the bottom side of module.

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그림 3. PPG 측정 Fig. 3. PPG measurement.

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Fig. 4. PPG 신호 (a) 정상적 처리 상태, (b) 움직임 영향 상태, (c) 실제 측정상태 Fig. 4. PPG signals. (a) normal, (b) affected by motion, (c) measured in the actual circuit.

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그림 5. 향분사와 조명 결정 알고리즘 Fig. 5. Scent spray and lighting determination algorithm.

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그림 6. 전체 시스템 구성도 Fig. 6. Total system configuration diagram.

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그림 7. 3D 모델링한 외관 설계 Fig. 7. Appearance design for 3D.

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그림 8. 실제 외관 구성 Fig. 8. Actual appearance configuration.

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그림 9. (a) 내부 회로 구성 (b)어플리게이션 메뉴 화면 Fig. 9. (a) Internal circuit configuration of the total system (b) integration menu of smartphone screen.

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그림 10. 결과에 대한 전체적 만족도 Fig. 10. The percentage of overall satisfaction with the results.

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그림 11. 보강되어야 할 부족 부분 선택 항목 Fig. 11. Insufficient low part to be reinforced.

표 1. 학기별 수행 내용 Table 1. Performance plan for each grade level

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표 2. 주제 설계 과정 Table 2. Subject design process

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표 3. 감정 상태에 따른 PPG값 Table 3. PPG values based on different emotions

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표 4. 감정 상태에 따라 사용되는 조명 종류 Table 4. Types of lights used on the states of the emotion

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표 5. 사용된 부품표 Table 5. Used part list

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표 6. 공학문제 수준 설정 적합성 확인표 Table 6. Level descriptor suitability checklist

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