Bumper Beam Blocking Structure for Radar Reflection Control
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Solution Overview
Problem
The detection structure for vehicles in autonomous driving systems experiences identification errors due to random reflections of radio waves from highly reflective components like bumper beams, which are difficult to reposition without increasing costs.
Innovation Solution
A blocking component for vehicles is mounted on the side end portion of the bumper beam to block openings, featuring an outer peripheral edge and a protruding portion that extends into the bumper beam, reducing stray reflections and improving safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the detection component is mounted near the bumper beam, then the detection structure can be compactly arranged, but random reflections from the bumper beam cause identification errors
Solution Approach 1:
A blocking component is introduced as an intermediary element between the detection component and the bumper beam. This blocking component, which includes a blocking portion and a protruding portion, serves as a mediator to prevent radio waves from entering the bumper beam's hole structures, thereby eliminating random reflections while allowing the detection component to remain in its compact position near the bumper beam.
2Measurement precision
If the detection component position is changed to avoid highly reflective components, then identification errors are reduced, but the layout space constraints make this difficult and costly
Solution Approach 1:
Rather than relocating the detection component, a blocking component is introduced as a cost-effective intermediary solution. This blocking component can be easily manufactured and installed at the opening of the bumper beam, preventing radio wave interference without requiring expensive redesign or relocation of the detection component.
3Measurement precision
If the opening of the bumper beam is blocked, then radio wave reflections are reduced, but the mounting structure must be secure and stable
Solution Approach 1:
The blocking component is segmented into multiple functional portions: a blocking portion that prevents radio waves from entering the bumper beam, and a protruding portion with engagement structures (such as engagement holes or clips) that provide secure mounting. This segmentation allows the blocking function and mounting function to be independently optimized while working together as a unified component.
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
The blocking component effectively reduces identification errors caused by stray reflections in a cost-effective manner, enhancing safety and practicality by blocking radio waves and improving the detection structure's accuracy.
Implementation Method 1
the blocking component for vehicle is formed by a material shielding radio waves
Data Source
AI summary
A blocking component for vehicle is used in a detection structure for vehicle including a bumper beam and a detection component. The bumper beam is mounted on a vehicle to maintain a bumper of the vehicle, and has a side end portion and an opening opened at the side end portion. The detection component is mounted at an inner side portion of the vehicle and located near the side end portion of the bumper beam. The blocking component for vehicle is mounted on the side end portion of the bumper beam to block the opening. The blocking component includes: an outer peripheral edge portion abutted against the outer peripheral edge of the side end portion; and a protruding portion extended from the opening into an inside of the bumper beam. At least a portion of the protruding portion is abutted against an inner wall surface of the side end portion.