Low-Profile Overrunnable Test Vehicle for Reduced Radar Interference
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Solution Overview
Problem
Current test vehicles for advanced crash avoidance systems have a large profile and high radar cross section, making them unsuitable for urban environments and scenarios requiring multiple pedestrian targets, as they interfere with the radar sensors of vehicles being tested and are not designed to simulate busy intersections effectively.
Innovation Solution
The development of an overrunable test vehicle with a low profile and minimal radar cross section, featuring a chassis with a control section and a carrier section of different heights, equipped with a drive mechanism, caster members, and a control system, allowing for the simulation of multiple pedestrian targets moving in different directions and speeds, and capable of withstanding significant weights and impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large platform test vehicle is used to carry soft targets, then the structural strength and stability are improved, but the radar cross section and profile height increase, interfering with ADAS sensor detection
Solution Approach 1:
The test vehicle platform is divided into a control section and a carrier section with different profile heights. The control section has a higher profile to house control systems, while the carrier section has a lower profile to minimize radar cross section when carrying soft targets. This segmentation allows the platform to maintain structural strength while reducing radar interference during actual testing operations.
Solution Approach 2:
The invention transitions from a single uniform platform design to a multi-level structure with varying profile heights in different sections. By creating a stepped configuration where the carrier section is lower than the control section, the platform achieves both structural integrity and reduced radar signature, effectively solving the contradiction between strength and radar interference.
2Object-affected harmful factors
If a small platform test vehicle is used to reduce radar cross section, then the radar interference is minimized, but the structural strength and load-bearing capacity decrease
Solution Approach 1:
The invention merges a small low-profile carrier section with a control section into a single integrated platform. The carrier section maintains a low profile to minimize radar cross section, while the integrated control section provides the necessary structural support and houses the control systems. This merging allows the small platform to achieve both low radar signature and adequate structural strength through combined design.
3Device complexity
If a single-height platform is used, then the structural design is simplified, but the adaptability to different test scenarios and soft targets is reduced
Solution Approach 1:
The platform is segmented into functional sections (control section and carrier section) with different profile heights optimized for their specific purposes. This segmentation allows each section to be designed independently for its function while maintaining overall structural coherence, achieving both reasonable complexity and high adaptability to different test scenarios.
Data Source
AI summary
The teaching generally provide for an overrunable test vehicle for dynamic vehicle testing of advanced driver assistant systems. The overrunable test vehicle comprising a chassis with a control section defining a cavity, the control section having a first profile height, and a carrier section having a second profile height less than the first profile height, the carrier section including a mounting area configured to receive a soft target. The overrunable test vehicle including one or more unpowered casters supported by the chassis in the carrier section, two or more drive mechanisms at least partially disposed within the cavity of the control section having an electric motor and a drive wheel. The overrunable test vehicle also including a control system disposed within the cavity of the control section and in communication with each electric motor to operate each electric motor to provide propulsion to the overrunable test vehicle.