Boat Control System Wire Break Detection
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Solution Overview
Problem
Conventional boat control systems fail to accurately detect wire breaks in duplicated communication systems before the system is started, leading to increased manufacturing costs and complexity due to the need for different ECU configurations based on the number of remote control ECUs on the hull.
Innovation Solution
Incorporating a confirmation data storage buffer and a broken wire detection device in both the engine side ECU and the remote control side ECU to monitor communication status confirmation data, allowing for detection of wire breaks regardless of the number of remote control ECUs, and using a separate subremote control device to ensure accurate detection in systems with multiple ECUs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wire break detection is performed based on communication status change after system start, then the detection method is simple, but wire breaks that occur before system start cannot be detected
Solution Approach 1:
The patent applies preliminary action by initializing a detection flag to a first value (indicating wire break) before system start, and clearing it to a second value (indicating normal) when communication is successfully established. This allows the system to distinguish between wire breaks that occurred before startup versus those that occur during operation, solving the problem of undetected pre-start wire breaks while maintaining simple detection logic.
2Measurement precision
If different ECU configurations are used based on the number of remote control ECUs, then detection accuracy may be improved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent implements universality by designing a single, unified ECU configuration that can handle multiple remote control ECUs through a standardized detection mechanism. The detection flag approach and communication status monitoring work regardless of whether one or multiple remote control ECUs are present, eliminating the need for different ECU configurations while maintaining accurate wire break detection.
Solution Approach 2:
The patent applies dynamics by making the detection system adaptive to different system configurations through runtime detection rather than static pre-configuration. The system dynamically adjusts its detection behavior based on actual communication status and the presence of remote control ECUs, allowing a single ECU design to serve multiple configurations without compromising detection accuracy.
Data Source
AI summary
A boat control system detects a wire break status in a duplicated communication system. A hull of a boat is provided with a main remote control side ECU and a subremote control side ECU, and the subremote control side ECU communicates with an engine side ECU via the main remote control side ECU. Both of the remote control side ECUs are provided with storage buffers in which communication status confirmation data transmitted between nodes is stored. A broken wire detection section of the engine side ECU starts a determination when a system is started, and broken wire detection sections of both of the remote control side ECUs start a determination when communication status confirmation data is received from another node. Data indicating that communication is in an abnormal status is stored as an initial value in a main remote control data storage buffer.