Laser Radar Optical Axis Adjustment via Brightness Difference Detection
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Solution Overview
Problem
Existing laser radar devices require large apparatuses to adjust optical axes by maximizing laser light intensity across entire irradiation areas, making them inefficient for large areas.
Innovation Solution
An optical axis adjustment method that irradiates objects with laser light to create a difference in brightness, detects the center of the irradiation area based on this difference, and adjusts the optical axis to a predetermined position, allowing for adjustment without capturing the entire irradiation area simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large apparatuses are used to adjust optical axes by maximizing laser light intensity across entire irradiation areas, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the irradiation area into multiple regions and performs optical axis adjustment for each region separately. Instead of capturing and analyzing the entire irradiation area simultaneously with a large apparatus, the system segments the area and processes each segment independently, reducing the required apparatus size while maintaining adjustment precision.
Solution Approach 2:
The patent extracts the center position information from the irradiation area by detecting brightness differences, rather than requiring complete capture of the entire irradiation area. This extraction approach allows optical axis adjustment using only the essential center position data, eliminating the need for large-scale apparatuses that would be required to capture and analyze the full irradiation area.
2Measurement precision
If large apparatuses are used to capture entire irradiation areas, then measurement precision is improved, but productivity decreases
Solution Approach 1:
By segmenting the irradiation area and processing each segment independently, the system enables faster data acquisition and processing. Each segmented region can be detected and analyzed separately, reducing the overall time required compared to capturing and processing the entire large irradiation area in one go, thus improving productivity.
Solution Approach 2:
The patent extracts only the essential center position information from each irradiation region rather than processing complete area data. This extraction of critical information reduces computational load and processing time, enabling faster optical axis adjustments and improving adjustment efficiency without sacrificing precision.
3Device complexity
If center detection based on brightness difference is used, then device complexity is reduced, but measurement precision may be affected
Solution Approach 1:
The patent applies local quality by using brightness difference detection specifically at the center region of each irradiation area. Instead of requiring uniform high-precision measurement across the entire area, the system focuses measurement quality on the critical center position where optical axis alignment is most sensitive, achieving accurate center detection with simpler apparatus.
Solution Approach 2:
The patent replaces complex mechanical measurement systems with optical brightness difference detection. By using the inherent brightness variations in the laser irradiation pattern and detecting center position through image processing of brightness distribution, the system achieves accurate center detection without requiring complex mechanical positioning apparatus.
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 optical axis adjustment without the need for large-scale apparatuses, improving efficiency by focusing on detecting and adjusting the center of the irradiation area based on brightness differences.
Implementation Method 1
irradiating an object with laser light emitted from the laser radar device
Implementation Method 2
detecting a center of an irradiation area on the object irradiated with the laser light based on the difference in brightness of each of the different portions of the object
Data Source
AI summary
An optical axis adjustment method for adjusting an optical axis direction of a laser radar device includes irradiating, detecting, and adjusting. The irradiating is irradiating an object with laser light emitted from the laser radar device by controlling the laser radar device to cause a difference in brightness in each of different portions of the object. The detecting is the detecting a center of an irradiation area on the object irradiated with the laser light based on the difference in brightness of each of the different portions of the object irradiated with the laser light emitted from the laser radar device. The adjusting is adjusting the optical axis direction of the laser radar device such that the center detected in the detecting is at a predetermined position relative to the laser radar device.