Dummy Apparatus with Movable Radar Reflecting Elements
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Solution Overview
Problem
Existing dummy devices for testing driver assistance systems are not cost-efficient for repeated use after mechanical impacts and lack realistic simulation of movable parts, which is crucial for training and evaluating these systems effectively.
Innovation Solution
A dummy device comprising a base body with a simulation region and a movable simulation element that reflects or emits signal waves to simulate the motion of movable parts, allowing for realistic simulation of objects like vehicles or pedestrians, using retroreflecting elements and actuated motion to replicate characteristic signal echoes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dummies are made realistic with detailed movable parts, then simulation accuracy is improved, but manufacturing cost and repair complexity increase
Solution Approach 1:
The dummy device is divided into a base body and separate simulation elements. The simulation elements are detachably connected to the base body, allowing them to be independently replaced after damage without replacing the entire dummy structure. This segmentation maintains simulation accuracy while reducing repair complexity and cost.
Solution Approach 2:
The simulation elements are designed to copy only the essential signal-reflecting characteristics of the movable parts of real objects, rather than replicating the full physical complexity. This allows realistic radar signal interaction while simplifying the physical structure for easier manufacturing and repair.
2Reliability
If dummies are made robust for repeated use after impact, then reliability is improved, but realism and signal reflection accuracy deteriorate
Solution Approach 1:
The base body is designed as a robust structure capable of withstanding mechanical impacts and being reused. The simulation elements are detachably connected, allowing them to be replaced if damaged while keeping the robust base body intact. This maintains both reliability for repeated use and signal reflection accuracy through replaceable precise elements.
Solution Approach 2:
The base body provides robust mechanical support and positioning, while the simulation elements provide precise signal-reflecting properties. Each part has optimized local quality for its specific function, ensuring both durability and measurement accuracy.
3Measurement precision
If complete objects are used for testing, then simulation realism is improved, but cost and repair difficulty increase
Solution Approach 1:
The dummy device separates the base body from simulation elements with detachable connections. This allows simulation elements to be independently replaced without complex disassembly, improving ease of repair while maintaining simulation realism through accurate signal-reflecting elements.
Solution Approach 2:
Simulation elements that are damaged or worn can be discarded and replaced with new or recovered elements, rather than attempting to repair the entire dummy device. This simplifies the repair process while maintaining simulation quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables realistic testing of driver assistance systems by simulating real objects, reducing material costs and complexity while maintaining accurate signal reflections and emissions, thus facilitating effective training and evaluation with lower maintenance efforts.
Implementation Method 1
The simulation element is configured to reflect and/or to emit signals, in particular signal waves, such that a motion of the movable part of the object to be simulated is simulatable
Data Source
AI summary
Embodiments of the present invention relates to a dummy device for performing tests for driver assistance systems. The dummy device comprises a base body with a simulation region, wherein the base body depicts an object to be simulated and the simulation region depicts a movable part of the object the simulated, and at least one simulation element which is arranged at the simulation region. The simulation element is configured to reflect and/or to emit signals such that a motion of the movable part of the object to be simulated is simulatable.