CAN 기반의 동적 ID 할당을 이용한 선박엔진 모니터링 시스템 = CAN-based marine engine monitoring system using dynamic ID allocation

다국어 초록 (Multilingual Abstract)

This thesis proposes a marine engine state monitoring system using dynamic ID application and scheduling method of network sensors which collects the state of bearings temperature and pressure of engine through the CAN network. This thesis proposes the effective monitoring method for marine engine system, which is implemented based upon CAN (Controller Area Network) network. As the marine engine monitoring system requires various kind of information, a lot of sensor nodes are distributed to several places. The dynamic application mechanism of CAN protocol ensures, which all nodes are transferred according to the priority of node identifiers. All the CAN modules are connected to the SCU (Signal Control Unit) module for the efficient communication and processing. SCU module of the time master is responsible for the transmission of CAN module message. Through these methods, message with low-priority were ensured to transmit message and node balancing on CAN bus. This design reduces the cost for wiring and improves the data transmission reliability by recognizing the sensor errors and data transmission errors. Conventional communication method as RS232 and RS485 is supported for compatibility with the existing Marine Engine State Monitoring System. Therefore state of marine is able to be checked in ER(Engine Room).

목차 (Table of Contents)

• I. 서론 1
• 1.1 연구배경 1
• 1.2 연구기술 개발동향 4
• 1.3 연구목적 5
• II. CAN 프로토콜 분석 8
• 2.1. CAN의 특징 8
• 2.2. CAN의 물리 계층 10
• 2.3. LLC 부-계층 12
• 2.4. CAN 메시지 구조 13
• 2.4.1 데이터 프레임(Data Frame) 14
• 2.4.2 리모트 프레임(Remote Frame) 17
• 2.4.3 에러 프레임(Error Frame) 17
• 2.4.4 오버로드 프레임(Overload Frame) 17
• 2.4.5 인터프레임 스페이스(Interframe Space) 18
• 2.4.6 주소지정 방식과 메시지 우선순위 19
• 2.4.7 에러처리 방법 20
• 2.5 CAN의 최악 응답시간 분석 23
• III. ESMS(Engine State Monitoring System) 26
• 3.1 ESMS 모사장치 26
• 3.2 ESMS 센서 구성 35
• 3.3 ESMS 구조 41
• IV. 동적 ID 할당 모드 및 스케줄링 기법 53
• 4.1 동적 ID 할당 모드 54
• 4.1.1 데이터 전송주기를 이용한 스케줄링 기법 58
• 4.1.2 메시지 개수를 이용한 스케줄링 기법 60
• 4.1.3 데이터 수신률을 이용한 스케줄링 기법 62
• 4.2 데이터필드 파라미터 65
• V. 실험 및 결과 68
• VI. 결론 76
• 참고문헌 78
• Abstract 82