Boat ECU Authentication for Accurate Gauge Data
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Solution Overview
Problem
In conventional boat propulsion systems, accurate information transmission from the engine ECU to the gauge is hindered during system initialization due to incomplete authentication between the remote control ECU and the gauge ECU, resulting in the display of invalid default values instead of actual engine information.
Innovation Solution
The solution involves connecting the engine ECU to the remote control ECU and the remote control ECU to the gauge ECU, with a control operation that initiates communication only after power supply is turned on and authentication between the engine and remote control ECUs is completed, ensuring accurate information transmission by waiting for a predetermined time before starting communication between the remote control ECU and the gauge ECU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If communication between the gauge ECU and remote control ECU is started at the same time as system start, then the information display device can quickly display information, but the transmitted data will be default values instead of accurate engine information due to incomplete authentication
Solution Approach 1:
The patent applies preliminary action by completing the authentication process between remote control ECU and engine ECU before initiating communication between gauge ECU and remote control ECU. This ensures that accurate engine information is transmitted to the gauge only after authentication is successfully completed, preventing the display of invalid default values while maintaining efficient system startup.
2Reliability
If different transfer systems are used for engine ECU-remote control ECU communication and gauge-remote control ECU communication, then high reliability is ensured for engine control information transmission, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the communication system into two distinct communication paths: one for engine control information (requiring high reliability and authentication) and another for gauge information display (requiring speed). This allows each communication channel to be optimized for its specific requirements while maintaining overall system reliability.
Data Source
AI summary
An engine ECU provided in a boat propulsion system is connected to a remote control ECU provided in a remote control device, the remote control ECU is connected to a gauge ECU provided in an information display device, and control is performed so as to start communication between the remote control ECU and the gauge ECU after a power supply is turned on and after authentication of the engine ECU and the remote control ECU is completed. Accurate information on the boat propulsion system can be transmitted in response to a request from the information display device at a time of initialization at a system start.