Vehicle Communication Simulation System for ECU Verification
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Solution Overview
Problem
Current methods for verifying the operation of vehicle electrical systems require actual vehicles, leading to inefficiencies and increased man-hours when production lines or vehicle specifications change, and do not allow for simulation of process implementability on production lines.
Innovation Solution
A communication simulating system that simulates communication between vehicle electrical systems and a vehicle communication apparatus using vehicle state information and communication definition files, allowing for the simulation of checking, learning, and writing-in processes without an actual vehicle, by inputting and recording vehicle state information, and performing communication processes based on predefined protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If actual vehicles are used for verifying communication processes on production lines, then the verification accuracy is improved, but the man-hours and production time are increased
Solution Approach 1:
The patent creates a simulated vehicle environment that copies the communication behavior of actual vehicles. The simulation system reproduces ECU communication protocols, vehicle state transitions, and diagnostic workflows without requiring physical vehicles. This allows multiple verification scenarios to be tested simultaneously on production line designs, eliminating the need to physically move and test each vehicle configuration, thereby reducing man-hours while maintaining verification accuracy.
2Reliability
If actual vehicles are used for checking process implementability when production lines change, then the verification reliability is improved, but the productivity is reduced
Solution Approach 1:
The simulation system enables preliminary verification of production line configurations before actual vehicle production begins. By modeling the entire production process including vehicle movement, ECU access points, and communication sequences, the system identifies potential issues in advance. This preliminary action allows production line changes to be validated virtually, ensuring reliability while avoiding delays associated with physical reconfiguration and testing, thereby maintaining productivity.
3Productivity
If simulation is used to verify processes, then the productivity is improved, but the ability to verify process implementability on actual production lines is reduced
Solution Approach 1:
The simulation system segments the verification process into distinct functional modules: production line layout modeling, ECU communication simulation, diagnostic workflow reproduction, and anomaly detection. Each module can be independently configured and validated. This segmentation allows the system to efficiently handle complex verification scenarios while maintaining accuracy by ensuring each segment faithfully represents its corresponding real-world counterpart, combining productivity benefits with verification precision.
Data Source
AI summary
A communication simulating system includes: a communication recording device that records, into a vehicle condition database, a vehicle condition including a step, a place and a vehicle stringed together, vehicle state information that has been input as communication content between a vehicle electric equipment system and a vehicle communication apparatus in a step performed at a predetermined place; a vehicle state information acquiring device that acquires vehicle state information from the vehicle condition database in accordance with a selected vehicle condition; a storage unit that stores communication definition files specifying the respective ones of the same processes as the communication processes executed by a plurality of ECUs included in the vehicle electric equipment system; and a communication control device that communicates with a vehicle communication apparatus in accordance with the communication process and the vehicle state information.