Dielectric Rail-Guide Radar Vehicle Guidance
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Solution Overview
Problem
Existing autonomous driving systems face limitations in providing accurate longitudinal and position information, are susceptible to lighting contrasts, and can be compromised by environmental conditions and interference, particularly in optical guidance systems integrated into pavements.
Innovation Solution
A system utilizing a high-resolution radar device to detect changes in dielectric properties of a pre-recorded rail-guide, allowing for accurate vehicle guidance by interpreting reflected energy patterns, which are encoded in non-conducting materials, enabling centimeter-resolution tracking and resistance to interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical characteristics are used in the guidance system, then the system can provide vehicle guidance, but the system is subjected to great lighting contrasts that hinder the operation of the detectors
Solution Approach 1:
The patent replaces the optical detection system with a radar-based electromagnetic detection system. Instead of using optical detectors that are sensitive to lighting conditions, the invention employs radar waves to detect dielectric changes in the rail-guide, thereby eliminating the harmful effect of lighting contrasts on system operation.
Solution Approach 2:
The invention changes the detection parameter from optical characteristics to dielectric properties. By detecting changes in dielectric constant rather than optical reflections, the system becomes immune to lighting conditions while maintaining the ability to detect the rail-guide and provide accurate vehicle positioning.
2Reliability
If optical guidance system is used, then vehicle guidance is provided, but the system is seriously affected under fog or rainy conditions
Solution Approach 1:
The patent substitutes the optical detection mechanism with a radar-based electromagnetic detection system. Radar waves can penetrate fog and rain more effectively than optical signals, allowing the guidance system to maintain reliable operation in adverse weather conditions while eliminating the sensitivity to fog and rain that plagues optical systems.
3Extent of automation
If transponder system is used, then automatic transportation is achieved, but the longitudinal resolution is insufficient since transponders cannot be installed each centimeter
Solution Approach 1:
The invention replaces the discrete transponder system with a continuous radar-based detection system. Instead of relying on periodically spaced transponders, the radar continuously detects dielectric changes along the entire rail-guide, providing centimeter-level longitudinal resolution throughout the track while maintaining automatic transportation capabilities.
4Extent of automation
If transponder system is used, then automatic transportation is achieved, but the system integrity is compromised by interfering transmissions that can simulate transponder signals
Solution Approach 1:
The invention changes the detection parameter from transponder radio frequency signals to radar-based dielectric constant measurements. This parameter change provides inherent immunity to interference because the radar detects physical dielectric properties of the rail-guide material itself, making it impossible for interfering transmissions to simulate authentic signals and thereby preserving system integrity.
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 system achieves reliable and accurate vehicle guidance with centimeter-resolution tracking, resistance to interference, and operation in adverse conditions, using a radar system that can penetrate non-conductive materials and maintain functionality with low power consumption.
Implementation Method 1
a high resolution radar device to detect changes in dielectric properties
Implementation Method 2
detection of changes of the dielectric properties in a pre-recorded rail-guide
Implementation Method 3
detecting the borders in the distances profile... the radar sensor detects the borders
Data Source
AI summary
System of automatic guidance of vehicles by means of the detection of changes of the dielectric properties in a pre-recorded rail-guide, wherein the dielectric changes are detected by a high resolution radar device and wherein there is a control system of the vehicle that has the ancillary means required to convert it to an auto guidance system characterized in that the system is composed by a pre-recorded rail-guide (1) an information reading device (11) and auxiliary means of vehicle control (12).