ECU Real-Time Simulation Synchronization for Vehicle Development
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Solution Overview
Problem
Existing vehicle development systems struggle to accurately simulate real-world driving scenarios and the interactions between vehicle ECUs, as they fail to reflect actual driving operations and vehicle behaviors in simulation results.
Innovation Solution
A vehicle development support system comprising a frame body with ECUs, a real-time simulator, and a synchronizer, which acquires external driving information and synchronizes it with control signals to reproduce real-world driving operations and vehicle behaviors within a virtual simulation environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a virtual vehicle evaluation system using ECUs and simulators is employed, then manufacturing cost and time are reduced, but the accuracy of simulating real-world driving operations and vehicle behavior deteriorates
Solution Approach 1:
The system performs preliminary actions by acquiring actual driving information in advance and pre-processing it into standardized formats that can be directly utilized in simulation tests. This allows the simulation to start with realistic driving data already prepared, improving both efficiency and accuracy without requiring repeated real-world testing.
Solution Approach 2:
The system introduces an information management device as an intermediary between real-world driving data collection and the simulation environment. This mediator acquires, standardizes, and manages driving information, enabling seamless integration of real-world data into the virtual evaluation system while maintaining data quality and consistency.
2Ease of operation
If traditional simulation test conditions are used, then test setup is simplified, but the ability to reflect actual driver operations and vehicle interactions deteriorates
Solution Approach 1:
The system creates accurate copies of real-world driving operations by acquiring actual driving information from vehicles and reproducing it in the simulation environment. Instead of simplifying test conditions, the system copies real driving data including driver operations, vehicle states, and environmental conditions, ensuring high fidelity representation of actual driving scenarios.
Solution Approach 2:
The system transitions from static, pre-defined test conditions to dynamic, adaptive test conditions that reflect actual driving variability. By continuously acquiring and updating driving information, the simulation adapts to real-world variations in driver behavior, road conditions, and vehicle responses, enhancing reliability while maintaining ease of operation through automated data processing.
Data Source
AI summary
A vehicle development support system includes a frame body equipped with electronic control units installed in a vehicle, a real-time simulator that calculates physical state amounts for operating in-vehicle devices controlled by the electronic control units using control signals for the electronic control units and simulate operations of the in-vehicle devices and a behavior of the vehicle caused by the operations, and a synchronizer that synchronizes communication in which the electronic control units receive outputs from the real-time simulator with communication in which the real-time simulator receives the control signals for the electronic control units. The real-time simulator includes an external information acquisition interface that acquires, as external information, driving information obtained by driving a vehicle in a real space. In a virtual space of a simulation result in which the external information is reflected, driving of the vehicle in which the control signals are reflected is reproduced.