직렬 통신을 이용한 농기계 와이어링 하네스의 개선에 관한 연구

다국어 초록 (Multilingual Abstract)

The performance of the introduction of electronic control systems of
agricultural machine because of the growing increase in wiring harness
wiring difficulties, weight gain, poor reliability, poor workability of the
production line, and has issue. This study uses a serial communication
wiring harness is aiming to improve. Improvement of the problems
encountered with the wiring harness, Therefore, the fuse was distributed
deployment. Distributed and posted to fuse the issue, because the
maintenance of the discomfort caused to solve the problem by using the
contactless PTC Thermistor role of self-recovery fuse and wiring to
connect each connector acts as a T connector was developed to resolve
the issue.
As a result, use serial communication and simplify the wiring harness
and PTC Thermistor for over current and the experiment is over when
the self-heating due to increased resistance to ensure current was
blocked. In addition, agricultural machine on the environment is a
prerequisite molding. Experiment with molding, depending on the type of
molding material whose temperature characteristics were confirmed.

목차 (Table of Contents)

• 제 1장 서론 ...................................................................................................... 1
• 1.1 연구배경 및 연구동향 ........................................................................... 1
• 제 2장 이론적 배경 .......................................................................................... 2
• 2.1 콤바인의 기본 구조와 기능 .................................................................. 2
• 2.1.1 주행부 ............................................................................................ 2
• 2.1.2 전처리부·예취부·반송부 ............................................................. 3
• 2.1.3 탈곡선별부 ..................................................................................... 3
• 2.1.4 곡물탱크......................................................................................... 4
• 2.1.5 짚처리장치 ..................................................................................... 4
• 2.2 콤바인 전자제어 장치 ........................................................................... 5
• 2.2.1 오거 구동 장치 .............................................................................. 5
• 2.2.2 예취 높이 제어 장치 ...................................................................... 5
• 2.2.3 차체 수평 제어 장치 ...................................................................... 6
• 2.2.4 공급 깊이 제어 장치 ...................................................................... 7
• 2.3 콤바인 시스템의 문제점 ....................................................................... 8
• 2.3.1 와이어링 하네스 ............................................................................. 8
• 2.3.2 정비 ............................................................................................... 8
• 2.3.3 생산 조립 과정 .............................................................................. 8
• 2.4 콤바인 시스템의 개선안 ....................................................................... 9
• 2.4.1 와이어링 하네스 ............................................................................. 9
• 2.4.2 정비 ............................................................................................. 10
• 2.5 기대효과 ............................................................................................. 11
• 제 3장 실험 장치 및 방법............................................................................. 12
• 3.1 통신 방식 선정 ................................................................................... 12
• 3.1.1 RS422 시리얼 통신 ..................................................................... 12
• 3.2 마이크로프로세서 선정 ....................................................................... 15
• 3.3 컨트롤러 구성 및 제작 ....................................................................... 16
• 3.3.1 CPU 보드 제작 ............................................................................ 16
• 3.3.2 입력 보드 제작 ............................................................................ 17
• 3.3.3 출력 보드 제작............................................................................. 17
• 3.3.4 TR 보드 제작 ............................................................................... 17
• 3.4 와이어링 하네스 제작 ......................................................................... 19
• 3.5 T 커넥터 제작 .................................................................................... 21
• 3.5.1 개발 컨셉 ..................................................................................... 21
• 3.5.2 정온도 써미스트 ( PTC Thermistor ) ........................................ 22
• 3.5.3 정온도 써미스트 ( PTC Thermistor )의 적용 ............................ 26
• 3.6 PTC 실험 장치 ................................................................................... 27
• 3.7 이론 관계식 ........................................................................................ 29
• 3.8 PTC 전류 특성 실험 .......................................................................... 32
• 3.9 T 커넥터 몰딩 특성 실험 ................................................................... 32
• 3.10 PTC 방·단열 특성 실험 ................................................................. 32
• 3.11 PTC 복구 특성 실험 ........................................................................ 32
• 제 4장 실험 결과............................................................................................ 33
• 4.1 PTC 전류 특성 ................................................................................... 33
• 4.2 PTC 기준 그래프 선정 ....................................................................... 35
• 4.3 T 커넥터 몰딩 특성 ............................................................................ 36
• 4.4 PTC 방·단열 특성 ............................................................................ 39
• 4.5 PTC 복구 특성 ................................................................................... 40
• 제 5장 결론 .................................................................................................... 42
• Reference ...................................................................................................... 44