Injection Molded Radar Sensor Absorber With Ribbed Geometry
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Solution Overview
Problem
Existing radar sensors face challenges with manual installation and limited adaptability of radar-absorbing foam mats, which can lead to measurement errors due to interference signals and quality issues from small conductive particles at cut edges, and lack automated installation capabilities.
Innovation Solution
The use of injection molded absorbers with raised rib-like structures inside the radar sensor housing, allowing for precise adaptation and automated installation, enabling optimal absorption of interference signals with customizable material properties and geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If foam mats are cut to size manually, then adaptability to different sensor configurations is improved, but productivity decreases and quality issues arise from conductive particles at cut edges
Solution Approach 1:
The absorber is pre-formed as an injection molded component with the exact geometry needed for the specific sensor configuration. This preliminary shaping eliminates the need for manual cutting during installation, thereby maintaining adaptability while dramatically improving productivity and eliminating conductive particle contamination from cutting operations.
2Ease of operation
If foam mats are used as self-adhesive mats, then ease of installation is improved, but manufacturing precision and quality are worsened due to manual handling and cutting
Solution Approach 1:
The injection molded absorber incorporates self-adhesive properties directly into the component during manufacturing. This allows the absorber to attach itself to the sensor housing without requiring manual handling or additional adhesive application steps, thereby maintaining ease of installation while dramatically improving manufacturing precision and eliminating quality issues from manual cutting.
3Ease of manufacture
If standardized foam materials are used, then ease of manufacture is improved, but adaptability of absorbent properties and height geometries is worsened
Solution Approach 1:
The injection molding process allows for precise control and variation of material parameters including absorbent properties and height geometries. Different formulations and dimensional specifications can be easily implemented by changing molding parameters, maintaining ease of manufacture while achieving high adaptability to specific sensor requirements.
4Adaptability or versatility
If manual installation of foam mats is performed, then adaptability to specific applications is improved, but device complexity and time consumption increase
Solution Approach 1:
The injection molded absorber with integrated self-adhesive properties and pre-configured geometry serves itself by automatically attaching to the correct location on the sensor housing. This eliminates the need for complex manual installation procedures including measurement, cutting, and positioning, thereby maintaining application-specific adaptability while dramatically reducing installation process complexity and time.
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
This solution provides a high-quality, precisely fitted absorber that reduces interference effects, enhances measurement accuracy, and allows for automated installation, improving the overall performance and reliability of radar sensors.
Implementation Method 1
radar-absorbing materials are used, which receive the interference signals prior to or after a reflection, and preferably absorb said signals entirely
Data Source
AI summary
A radar sensor for emitting and/or receiving wave-shaped electromagnetic signals, having at least one housing and at least one absorber. The absorber is disposed inside the housing and a surface of the absorber has raised rib-like sections which are disposed adjacently to one another on the surface of the absorber. The absorber is an injection molded component.