수액 소진 알람시스템을 위한 광센서의 연구 및 제작 = Optical Sensor for Intravenous Solution Exhaustion Detecting

다국어 초록 (Multilingual Abstract)

Intravenous (IV) infusion set is one of the most common treatment methods applied to hospitalized patients. However, it is necessary to check the injection of IV solution in order to prevent patients from any possible medical injury. In this paper, using the optical sensors to detect exhaustion of IV solution was proposed. The optical sensor consists of LED and photodiode that were installed on the coplanar by letting light pass using reflector and achromatic lens. The coplanar location of two elements enables to detect IV solution at the desired point conveniently. The optimum LED was selected by experiment for various wavelength of LED(R.G.B) and photodiode was located according to the lens focal distance. The suggested optical sensor can detect exhaustion of IV solution by the differences in the amount of light which was caused by properties such as total reflection, refractive index and scattering. From the implementation, the detection was available with both containers of IV solution, glass bottle and plastic pack. And also there were apparent differences in outputs by presence or absence of IV solution when the solution colors and illumination were changed, enabling to verify the practicality.

목차 (Table of Contents)

• 목 차
• Ⅰ. 서 론 1
• Ⅱ. 기존의 수액감지센서 4
• 2.1 로드셀 방식을 이용한 수액감지센서 4
• 2.2 정전용량 방식을 이용한 수액감지센서 6
• 2.3 광센서 방식을 이용한 수액감지센서 7
• Ⅲ. 제안한 광센서의 설계 8
• 3.1 제안한 광센서 9
• 3.2. 광학 이론에 따른 광센서의 설계 11
• 3.2.1 빛의 전반사 및 굴절 11
• 3.2.2 파장에 따른 빛의 흡수와 산란 18
• Ⅳ. 광센서 제작 및 실험 25
• 4.1 수발광소자의 선정 및 배치 25
• 4.2 반사경 각도설계 27
• 4.3 파장에 따른 최적화된 발광소자 검출 28
• 4.4 조도변화에 따른 측정데이터 산출 33
• 4.5 수액색깔에 따른 실험결과 분석 34
• Ⅴ. 결 론 36
• 참 고 문 헌 38
• 영 문 초 록 42