Vehicle Radio Wave Sensor Rectilinear Propagation Guide
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Solution Overview
Problem
Existing radio wave sensors for vehicles face issues with radio wave dispersion and noise interference, leading to inaccurate distance measurements and a compromised vehicle appearance due to the use of materials with high dielectric loss and simple plastic antenna covers.
Innovation Solution
A radio wave transmission/reception device with a reflection unit and rectilinear propagation guide unit, featuring a reflection tube with multiple layers and inductive film with reflection protrusions, is installed inside the radiator grille, ensuring rectilinear propagation and reducing noise interference while improving the vehicle's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple plastic antenna cover is used, then the device complexity is reduced and manufacturing cost is lowered, but the appearance of the vehicle is compromised
Solution Approach 1:
The antenna cover is constructed using composite materials, specifically a light-transmitting resin material that combines aesthetic appearance with functional radio wave transmission properties. This composite material approach allows the cover to achieve both visual appeal and operational effectiveness without requiring complex multi-component assemblies.
Solution Approach 2:
The patent modifies the physical and chemical parameters of the antenna cover material by selecting a light-transmitting resin with specific optical and electromagnetic properties. This parameter change enables the cover to transmit radio waves effectively while maintaining an aesthetically pleasing appearance that integrates with the vehicle's front grille design.
2Device complexity
If radio waves are transmitted without rectilinear propagation guidance, then the device complexity is reduced, but noise interference increases and distance measurement precision deteriorates
Solution Approach 1:
The patent introduces an intermediary structure, specifically a light-transmitting antenna cover with optimized geometric configuration, that mediates between the radio wave source and the external environment. This intermediary component guides radio wave propagation rectilinearly while filtering out scattered waves that would cause noise interference, thereby improving measurement precision without requiring complex active control systems.
3Stability of the object's composition
If materials with high dielectric loss are used to intercept radio waves, then radio wave dispersion is reduced, but noise interference increases and measurement precision deteriorates
Solution Approach 1:
The patent applies local quality by creating specific geometric features and structural zones within the antenna cover that selectively interact with radio waves. The light-transmitting resin structure is designed with localized properties that guide radio waves rectilinearly in desired directions while allowing scattered waves to be naturally filtered, avoiding the need for high dielectric loss materials that would generate noise.
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 device effectively prevents noise-induced errors in distance measurement and enhances the vehicle's appearance by ensuring precise radio wave transmission and reception, with improved reflection properties and cost-effectiveness.
Implementation Method 1
a radio wave reflection unit installed at a predetermined location near the radio wave transmission/reception unit and changing the directions of radio waves transmitted from the radio wave transmission/reception unit such that the radio waves can be propagated forwards from a vehicle
Implementation Method 2
a radio wave rectilinear propagation guide unit installed in front of the radio wave reflection unit and guiding rectilinear propagation of transmitted/received radio waves
Implementation Method 3
a radio wave sensor transmits radio waves having a wavelength of 1-10 millimeters in a desired direction and receives radio waves reflected by an obstacle in front of a vehicle and determines the distance between the vehicle and the obstacle
Data Source
AI summary
A radio wave transmission/reception device capable of detecting an obstacle in front of a vehicle using radio waves is disclosed. The device includes a radio wave transmission/reception unit; a radio wave reflection unit installed around the radio wave transmission/reception unit and changing the direction of the radio waves such that the radio waves can be propagated forwards from the vehicle; a radio wave rectilinear propagation guide unit installed in front of the radio wave reflection unit and guiding rectilinear propagation of the radio waves; and a viewing window installed in front of the radio wave rectilinear propagation guide unit and oriented toward the radiator grille. The radio wave rectilinear propagation guide unit has an inductive film parallel to the viewing window, with at least a reflection protrusion formed on the inductive film. The device improves the rectilinearity of radio wave propagation and improves the appearance of the radiator grille.