Integrated Vehicle Test Bench for Real-World Scenario Simulation
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Solution Overview
Problem
Existing test systems for intelligent vehicles are limited in their ability to perform comprehensive testing, often relying on single test tools and failing to simulate real-world driving conditions effectively.
Innovation Solution
A system integrating a test bench, hardware-in-the-loop sub-system, software-in-the-loop sub-system, target-in-the-loop sub-system, and a test management platform, which simulates road resistance and posture, constructs specific test environments, inputs test scenario data, and presents traffic scenario targets to comprehensively test intelligent vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If virtual simulation testing (model-in-the-loop or software-in-the-loop) is used, then test cost is reduced and test efficiency is improved, but test accuracy deteriorates due to reliance on mathematical models that differ from actual test conditions
Solution Approach 1:
The patent merges virtual simulation testing (model-in-the-loop and software-in-the-loop) with hardware-in-the-loop testing into an integrated test system. This combination allows the system to leverage the efficiency and low cost of virtual simulation while incorporating real hardware components (sensors, controllers, actuators) to maintain test accuracy, thereby resolving the contradiction between test efficiency and test accuracy.
2Measurement precision
If hardware-in-the-loop testing is used, then test accuracy is improved by incorporating real components, but adaptability deteriorates because changes in operating environment during practical tests affect test effectiveness
Solution Approach 1:
The patent implements dynamic environmental simulation capabilities in the hardware-in-the-loop test system. The system can dynamically adjust and simulate various operating environments (road conditions, weather, traffic scenarios) to match practical test conditions. This dynamic adaptation allows the system to maintain test accuracy while becoming adaptable to different environmental conditions, resolving the contradiction between test accuracy and environmental adaptability.
3Measurement precision
If vehicle-in-the-loop testing or closed-field testing is used, then test accuracy is improved by testing the whole vehicle, but test cost increases and test repeatability deteriorates due to site limitations and environmental variations
Solution Approach 1:
The patent introduces an intermediary integrated test system that combines virtual and hardware elements, serving as a mediator between full-vehicle testing and component-level testing. This intermediary system allows comprehensive vehicle testing to be performed in a controlled laboratory environment rather than requiring expensive outdoor test sites, thereby maintaining test accuracy while reducing test cost and improving repeatability.
4Device complexity
If existing single-tool test systems are used, then device complexity is reduced, but comprehensiveness deteriorates as they fail to perform integrated hardware-in-the-loop and vehicle testing
Solution Approach 1:
The patent designs an integrated test system with multi-functionality that can perform model-in-the-loop testing, software-in-the-loop testing, hardware-in-the-loop testing, and vehicle-in-the-loop testing within a single unified platform. This universal system consolidates multiple test tools and capabilities, maintaining relative simplicity while achieving comprehensive testing coverage across different test levels and requirements.
Data Source
AI summary
A system for testing intelligent vehicles, including a test bench, a hardware-in-the-loop sub-system, a software-in-the-loop sub-system, a target-in-the-loop sub-system and a test management platform. The test bench is configured to simulate the resistance of the actual road according to the road resistance parameters, and simulate the posture of the actual road according to the road posture parameters.