Vehicle Headlight Radar Cover With Frequency-Selective Signal Passage
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Solution Overview
Problem
Existing vehicle headlight designs face challenges in integrating radar technology effectively, including risk of damage, signal attenuation, and artifacts in radar signals, which affect the accuracy of distance measurements and detection systems.
Innovation Solution
A radar and light emission assembly is designed with a radar module integrated behind the headlight cover, featuring a frequency-selective radar radiation-forming mechanism and a transparent headlight cover that allows for flexible arrangement and decoupling of radar and light radiation, optimizing radar technology integration within the headlight while maintaining lighting functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar technology is integrated in the bumper of a road vehicle, then distance measurement capability is achieved, but the risk of damage increases due to small collisions or slight contacts
Solution Approach 1:
The patent combines radar technology with the headlight assembly, integrating the radar unit within the headlight housing. This merging of functions protects the radar from damage risks associated with bumper integration while maintaining distance measurement capabilities. The headlight assembly serves as a protective enclosure for the radar components.
Solution Approach 2:
The headlight assembly is designed to serve multiple functions: it provides illumination through the light source and simultaneously houses the radar unit for distance measurement. This multi-functionality eliminates the need for separate radar mounting locations, reducing the overall number of components and potential damage points.
2Volume of moving object
If radar technology is integrated in the region of the radiator, then space utilization is improved, but compromises for the vehicle design have to be accepted
Solution Approach 1:
The radar unit is merged with the headlight assembly, utilizing the existing headlight housing and mounting structure. This integration avoids the need for separate radar mounting locations near the radiator, thereby maintaining vehicle design flexibility while achieving efficient space utilization within the headlight compartment.
3Object-affected harmful factors
If radar components are integrated in the headlight, then damage risk is reduced, but signal attenuation occurs at material layers and lacquer layers
Solution Approach 1:
The headlight cover is designed with specific local properties: it is made transparent or at least partially transparent to radar waves in the frequency range of 76 GHz to 81 GHz. This localized transparency ensures that radar signals can pass through the headlight cover with minimal attenuation, maintaining signal evaluation accuracy while keeping the radar protected within the headlight assembly.
4Power
If a frequency-selective radar radiation-forming mechanism is integrated in the headlight cover, then radar radiation efficiency is improved, but device complexity increases
Solution Approach 1:
The headlight cover is designed to serve multiple functions simultaneously: it protects the internal components, allows light transmission for illumination, and incorporates frequency-selective radar radiation-forming mechanisms for efficient radar signal transmission. This multi-functionality improves radar radiation efficiency without requiring separate dedicated components, thereby limiting the increase in overall device complexity.
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 design enhances the reliability and flexibility of radar technology integration in vehicle headlights, improving signal evaluation and detection accuracy while minimizing structural compromises and damage risks.
Implementation Method 1
a frequency-selective radar radiation-forming mechanism, in particular comprising a frequency-selective radar passage structure
Implementation Method 2
emitting light and radar radiation and equipped for detecting driving situations in a detection region by means of the radar radiation
Implementation Method 3
a light-transparent headlight cover... a frequency-selective radar passage structure
Implementation Method 4
equipped for detecting at least reflected radar radiation
Implementation Method 5
detecting driving situations in a detection region by means of the radar radiation
Data Source
AI summary
Provided is a radar and light emission assembly for emitting light and radar radiation and for detecting at least reflected radar radiation including: a headlight including a light-transparent headlight cover, and a light source, and a light reflector; a radar module, which is arranged behind the headlight cover, integrated in the headlight and including a radar antenna unit. The radar and light emission assembly has at least one radar radiation-forming mechanism, in particular a frequency-selective radar radiation-forming mechanism, including a radar radiation-forming mechanism, which is integrated in the headlight cover. The application of the radar technology, integrated in the headlight, can be further optimized hereby. The invention further relates to a method and a use for a radar and light emission assembly of this type.