Vehicle Simulation With Isolated Networks for Device Testing
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Solution Overview
Problem
The increasing complexity of vehicle control systems necessitates a more efficient method for evaluating the operation of various devices such as controllers, sensors, and actuators, as traditional evaluation methods require extensive and time-consuming real-world testing.
Innovation Solution
A simulation system is developed that includes a main simulator and a sub-simulator connected via an inter-device relay, allowing devices to operate in a simulated environment independently, reducing interference and facilitating evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices are coupled to the same in-vehicle network for evaluation, then device interaction can be tested, but operational interference and reliability issues occur
Solution Approach 1:
The patent divides the in-vehicle network into multiple isolated networks (first in-vehicle network and second in-vehicle network). Devices are segmented into different groups where evaluation target devices operate on the second network while other devices operate on the first network. This segmentation prevents operational interference while maintaining the ability to test device interactions through controlled information relay.
Solution Approach 2:
The patent introduces an information relay device as an intermediary between the first and second in-vehicle networks. This mediator selectively transmits information from the first network to the second network, enabling evaluation target devices to receive necessary data without direct coupling to the main network, thus preventing operational interference while maintaining evaluation capability.
2Reliability
If comprehensive operation checks are performed on all devices, then system reliability is improved, but evaluation time and complexity increase dramatically
Solution Approach 1:
The patent segments the evaluation process by isolating evaluation target devices on a separate network. This allows independent evaluation of specific devices without requiring comprehensive testing of the entire system, significantly reducing evaluation time while maintaining reliability through targeted assessment of critical components.
Solution Approach 2:
The patent extracts evaluation target devices from the main in-vehicle network and places them on a separate second network. This extraction enables focused evaluation of specific devices without the time-consuming requirement to test all devices in the complete system, while still ensuring system reliability through selective comprehensive checking of critical evaluation targets.
Data Source
AI summary
A simulation system for a vehicle includes a main simulator, a sub-simulator, and an inter-device relay device. The main simulator allows a first device to be coupled to a main in-vehicle network, allows the first device to operate, and allows the first device to output a first output. The first device is to be provided in the vehicle. The sub-simulator allows a second device to be coupled to a sub-in-vehicle network, and allows the second device to operate. The second device operates based on an output of the first device in the vehicle. The inter-device relay device outputs information generated in the main simulator to the sub-simulator. The second device operates in accordance with the information generated by the main simulator.