Radar Cover Deicing Layout for Polarization-Safe Wave Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar sensors on vehicles face reduced detection functionality due to frost formation at emission/reception locations in cold weather, as existing deicing systems cannot be placed inside the emission cone without affecting electromagnetic waves and are limited by size and conductivity constraints.
Innovation Solution
A deicing system with elongate heating elements arranged perpendicular to the direction of interest of the electromagnetic wave within the emission cone of the radar sensor, allowing the wave to pass through without reflection and enabling faster deicing rates by varying the number and density of elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a deicing system is placed outside the emission cone of the radar sensor, then the electromagnetic wave is not affected, but the available space is restricted and the deicing rate is limited
Solution Approach 1:
The patent applies dimensionality change by orienting the elongate heating elements perpendicular to the direction of interest of the electromagnetic wave. This spatial reconfiguration allows the deicing system to operate within the emission cone without blocking the radar waves, effectively utilizing the third dimension (orientation perpendicular to wave propagation) to resolve the space-deicing rate contradiction.
2Productivity
If the deicing system is placed inside the emission cone, then the deicing rate increases, but the electromagnetic wave is affected and radar efficiency is impaired
Solution Approach 1:
The patent applies local quality by making the heating elements elongate and orienting them perpendicular to the electromagnetic wave direction. This localized configuration ensures that heating occurs primarily in directions perpendicular to wave propagation, minimizing interference with radar efficiency while maximizing deicing effectiveness in the critical emission cone region.
3Reliability
If elongate heating elements are arranged perpendicular to the electromagnetic wave direction, then wave reflection is minimized and transmission is maximized, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the heating function into multiple elongate heating elements arranged in a specific pattern perpendicular to the electromagnetic wave direction. This segmentation allows each element to be optimized for its local orientation, minimizing wave reflection while distributing the heating function across multiple components rather than requiring a single complex heating structure.
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 deicing inside the emission cone without impairing radar sensor efficiency, with increased deicing rates compared to prior systems, by minimizing wave reflection and maximizing transmission.
Implementation Method 1
The deicing system comprises a set of elongate heating elements... Electricity applied to the elastomeric material produces the heat necessary for deicing
Implementation Method 2
The electromagnetic wave emitted by such radar sensors is generally linearly polarized... the electric field oscillates in only one direction
Implementation Method 3
the polarization of the electromagnetic wave describes the vibration of the electric field... When the wave is linearly polarized, this electric field oscillates in only one direction
Data Source
AI summary
The invention relates to a vehicle part intended to be placed facing an emission cone of a radar sensor, the radar sensor being configured to emit an electromagnetic wave the electric field of which includes a component oscillating in a direction of interest. The vehicle part includes a system for deicing the part. According to the invention, the deicing system includes a set of slender heatable elements, at least one sub-set of the set of slender heatable elements being located in the emission cone of the radar sensor and being configured so that each slender heatable element of the sub-set is placed on the part so as to extend in a direction substantially perpendicular to the main polarization direction of the radar sensor when the part is placed facing the radar sensor.