초록 ▼

○ 연구결과
- 측정기 Main PCB 및 광학대를 설계하고 암모니아와 이산화탄소를 누적 흡착시킬 수 있는 패들을 개발하였음. Main PCB 전면부에는 광학대 연결, LCD 표시창, 전자회로 구동 칩셋을 전면부에 연결할 수 있도록 하고 후면부에는 start 키, 방향키, stop키, 모드키, 인쇄, 날짜, 확인, 측정 버튼 등 기기 작동에 관련된 부품이 조립되도록 구성된 간편한 부숙도 측정기를 개발하였음.
- 개발된 테스트, 시제품, 상품용 부숙도 측정기는 재현성과 정밀도를 높이기 위해 측정기의 기능을 검증하고 시판 퇴

○ 연구결과
- 측정기 Main PCB 및 광학대를 설계하고 암모니아와 이산화탄소를 누적 흡착시킬 수 있는 패들을 개발하였음. Main PCB 전면부에는 광학대 연결, LCD 표시창, 전자회로 구동 칩셋을 전면부에 연결할 수 있도록 하고 후면부에는 start 키, 방향키, stop키, 모드키, 인쇄, 날짜, 확인, 측정 버튼 등 기기 작동에 관련된 부품이 조립되도록 구성된 간편한 부숙도 측정기를 개발하였음.
- 개발된 테스트, 시제품, 상품용 부숙도 측정기는 재현성과 정밀도를 높이기 위해 측정기의 기능을 검증하고 시판 퇴비를 대상으로 현장점검을 완료하여 상품화를 위한 준비를 완료하였음.

Abstract ▼

This study is to develop measuring system for detecting the harmful ammonia gas which is emitted from compost, and carbon dioxide gas which is related to microbial activity. The aims of research group I are to focused on the commercialization of compost maturity measuring system in laboratory and co

This study is to develop measuring system for detecting the harmful ammonia gas which is emitted from compost, and carbon dioxide gas which is related to microbial activity. The aims of research group I are to focused on the commercialization of compost maturity measuring system in laboratory and compost company. The aims of research group II are to develop the detecting module and circuit of the equipment, and those of research group III are to examine the precision and functionality measuring system developed by research group I.
The research group I has developed the test type, trial type and prototype measuring system using circuit and operation program provided from research group II, for the commercial production through repeated examinations and revisions. The test type measuring system is a compact size which was reported as a part of precedent study in project presentation using a mold. The prototype measuring system was made of main PCB(printed circuit board) and circuit and added sub-PCB to improve measuring sensitivity. Paddle fitted with two holders inside bottle cap was manufactured in order to absorb the amounts of ammonia and carbon dioxide gases emitted from compost. Front part of the PCB was composed of optical mount, LCD, electronic circuit, and microcontroller. On the other hand, components related with instrumental operation, such as start, indicating, stop, mode, printing, date, enter, and measuring buttons, were located at its rear part, in order to simplify the manufacturing process. Based on the study results, three patents were applied at this point.
Theoretical basis, circuit diagram, and operation program were designed through the collaboration works between research group I and research group II. The sensing circuit was designed to detect the color change of paddle media by the investigation of specific properties of color sensor. The operation program was fitted with evaluation of compost maturity to be able to measure the color of paddle media absorbing ammonia and carbon dioxide gases. The reproducibility and optical instrumental conditions were examined by the way of R(red), G(green), B(blue) intensity measurement and X, Y account of newly developed optical mount.
The research group III has verified the measuring efficiency of prototype detector manufactured by research group I. We determined the concentration of gaseous ammonia, carbon dioxide, and sulfur compounds produced during the process of composting using pig manure. In the investigation by composting duration, the amount of ammonia gas was highest after about 2 days passed. The sulfur compounds as CH3SH, DMS and DMDS were produced in the highest quantity after about 14 hours. The gas-absorbing media was developed to be able to fit the paddle manufactured by research group I. The commercialized gas-absorbing agar media were replaced with the mixtures of gelrite, PVA, and/or agar, in order to improve the physical properties during the manufacturing process of the ammonia and carbon dioxide detection paddle kits. In the results, the mixture media showed better physical and antibiotic properties, and were more available than the case of only using agar medium. The compost maturity were investigated for the total 38 commercial composts in domestic market. Among them, 37 composts were found to be completely matured (stage of complete-matured Ⅰ or stage of complete-matured Ⅱ) and only one was matured incompletely. By the comparison results of the commercial compost samples, we could successfully verify that the functionality of the newly developed prototype measuring system was satisfactorily available.

목차 Contents

• 제출문 ... 1
• 요약문 ... 2
• SUMMARY ... 4
• CONTENTS ... 6
• 목차 ... 7
• 제 1 장 연구개발과제의 개요 ... 9
• 1. 연구개발의 목적 ... 9
• 2. 연구개발의 필요성 ... 9
• 3. 연구개발의 범위 ... 10
• 제 2 장 국내외 기술개발 현황 ... 11
• 1. 국내외 관련분야 기술개발 현황 ... 11
• 2. 연구결과가 국내외 기술개발 현황에서 차지하는 위치 ... 12
• 제 3 장 연구개발 수행 내용 및 결과 ... 13
• 제1절 제1세부: 농자재 가스 측정기 실용화 기술개발(주관기관) ... 14
• 1. 기술개발 흐름도 및 과제간 협조 ... 14
• 2. 기술개발 내용 및 결과 ... 15
• 제 2 절 제2세부: 다용도 가스측정기의 모듈 개발(협동과제) ... 37
• 1. 기술개발의 이론적 근거 ... 37
• 2. 기술개발 내용 및 결과 ... 40
• 제 3절 제3세부 측정기 기능 검정(협동과제) ... 61
• 1. 재료 및 방법 ... 61
• 2. 결과 및 고찰 ... 83
• 제 4 장 목표달성도 및 관련분야에의 기여도 ... 118
• 제 5 장 연구개발 성과 및 성과활용 계획 ... 119
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 122
• 제 7 장 참고문헌 ... 123
• 부록 ... 125
• 1. 제2세부: 다용도 가스측정기의 모듈 개발 ... 125
• 2. 제3세부: 측정기 기능 검정 ... 149
• 끝페이지 ... 176