Solar Blind UV Path Detection for Autonomous Vehicles
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Solution Overview
Problem
Current automatic driving technologies for automobiles face challenges in accurately detecting road paths due to interference from complex illumination, weather conditions, and background noise, particularly with magnetic signal sensing and visual navigation methods, which result in low reliability and timeliness.
Innovation Solution
A path detection system utilizing Solar Blind Ultraviolet (SBUV) light signals, including SBUV light signal emitters and detectors, processes the signals with a signal processing module to extract path information, reducing interference and enabling accurate real-time path detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If magnetic signal sensing is used for path detection, then interference from surrounding environment is reduced, but signal noise increases beyond certain distance and multilane path detection becomes unclear
Solution Approach 1:
The patent replaces magnetic field-based detection with optical field-based detection using SBUV light signals. The SBUV emitter transmits ultraviolet light signals that are detected by the SBUV detector, substituting the magnetic sensing mechanism with an optical sensing mechanism that is not affected by electromagnetic interference from surrounding environments.
Solution Approach 2:
The patent changes the detection parameter from magnetic field strength to SBUV light signal intensity. By using solar blind ultraviolet light signals with specific wavelength characteristics, the system achieves both environmental immunity and long-distance detection capability, resolving the contradiction between environmental interference resistance and measurement precision.
2Ease of operation
If visual navigation using visible light camera is used, then path information can be acquired through image analysis, but detection reliability decreases under complex illumination, night conditions, and severe weather
Solution Approach 1:
The patent applies local quality by using SBUV light signals that are specifically absorbed by the ozone layer, creating a unique spectral signature. This localized wavelength characteristic (190-280nm) ensures that only the intended SBUV emitter signals are detected, while all other visible light sources, including sunlight and artificial lighting, are filtered out by the solar blind detector.
Solution Approach 2:
The patent creates an inert detection environment by using the solar blind ultraviolet band (190-280nm) where atmospheric ozone naturally absorbs sunlight. This creates a detection channel that is inherently isolated from environmental light interference, similar to creating an inert atmosphere that excludes unwanted elements.
3Measurement precision
If laser radar is used for environmental restoration, then three-dimensional distance information can be acquired, but the system becomes expensive and inconvenient for on-board integration
Solution Approach 1:
The patent employs relatively simple SBUV emitters and detectors that are much less complex and expensive than laser radar systems. The SBUV components can be easily integrated into automobile on-board systems without requiring complex mechanical scanning or high-power laser sources, making the system cost-effective and integration-friendly.
4Loss of information
If visible light camera is used for path detection, then two-dimensional or three-dimensional image information can be acquired, but processing time increases and timeliness decreases
Solution Approach 1:
The patent extracts only the essential SBUV light signal information from the environment, ignoring all other visual information. The SBUV detector is tuned to detect only the specific ultraviolet wavelength range (190-280nm) emitted by the path marking emitters, extracting only the necessary path information without the need to process complex image data from cameras.
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 SBUV-based system provides high anti-interference capability, allowing accurate path detection under all weather conditions with reduced processing time and complexity, enhancing the reliability and timeliness of path information acquisition.
Implementation Method 1
a solar blind ultraviolet (SBUV) detector... capable of detecting road information already marked by solar ultraviolet light signals
Data Source
AI summary
A path detection system based on SBUV light signals is provided, including a SBUV light signal emitter, a SBUV detectors and a signal processing module, wherein the SBUV light signal emitter is arranged on a road to serve as a path mark line; the SBUV detector is configured to detect the path mark line and transmit the detected signals from the SBUV light signal emitter to the signal processing module; and the signal processing module acquires a traveling path in real time by using a path line extraction algorithm, and eventually outputs path information.