Laser Scanner Radial Circumferential Angle Intervals
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Solution Overview
Problem
Conventional laser scanners face inefficiencies in acquiring point cloud data, particularly when measuring plane surfaces, as they require a large number of data points, leading to increased processing time and calculation load due to uneven intervals between measuring points in radial and circumferential directions.
Innovation Solution
A laser scanner system that includes a distance measuring component, a frame unit, a scanning mirror, and an arithmetic control component, which sets specific intervals for measuring angles in both radial and circumferential directions based on the height and horizontal distance of the scanning mirror, allowing for efficient data acquisition by adjusting the scanning pattern to match desired point intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the interval of measuring angles in the radial direction is narrowed to obtain desired distance between measuring points at positions away from the laser scanner, then the distance between measuring points in the radial direction is improved, but the number of point cloud data increases and processing time increases
Solution Approach 1:
The patent applies local quality by setting different measuring angle intervals for different directions (radial vs. circumferential) based on the specific requirements of each direction. The radial direction uses a first measuring angle interval optimized for distance between measuring points, while the circumferential direction uses a second measuring angle interval, allowing each direction to have its own optimal parameters rather than using a uniform interval throughout.
Solution Approach 2:
The patent changes the parameters of measuring angle intervals dynamically based on the distance from the laser scanner. By calculating and applying different intervals (first interval for radial, second interval for circumferential) according to the specific measurement distance and requirements, the system optimizes the balance between measurement precision and data quantity, reducing unnecessary data points while maintaining desired distance between measuring points.
2Manufacturing precision
If the interval of measuring angles in the radial direction is narrowed to obtain desired distance between measuring points at positions away from the laser scanner, then the distance between measuring points in the radial direction is improved, but the calculation load increases
Solution Approach 1:
The patent applies local quality by setting different measuring angle intervals for different directions (radial vs. circumferential) based on the specific requirements of each direction. The radial direction uses a first measuring angle interval optimized for distance between measuring points, while the circumferential direction uses a second measuring angle interval, allowing each direction to have its own optimal parameters rather than using a uniform interval throughout.
Solution Approach 2:
The patent changes the parameters of measuring angle intervals dynamically based on the distance from the laser scanner. By calculating and applying different intervals (first interval for radial, second interval for circumferential) according to the specific measurement distance and requirements, the system optimizes the balance between measurement precision and data quantity, reducing unnecessary data points while maintaining desired distance between measuring points.
3Ease of operation
If the same angular interval is used in both radial and circumferential directions, then the device operation is simplified, but the distance between measuring points becomes uneven and data efficiency decreases
Solution Approach 1:
The patent applies local quality by setting different measuring angle intervals for different directions (radial vs. circumferential) based on the specific requirements of each direction. The radial direction uses a first measuring angle interval optimized for distance between measuring points, while the circumferential direction uses a second measuring angle interval, allowing each direction to have its own optimal parameters rather than using a uniform interval throughout.
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
This approach significantly reduces the number of point cloud data points needed, thereby decreasing processing time and calculation load, while ensuring accurate data acquisition by optimizing the scanning pattern to match desired point intervals.
Implementation Method 1
a distance measuring component for emitting a distance measuring light to a plane to be measured and for measuring a distance to a measuring point which the measuring light is emitted to
Data Source
AI summary
A laser scanner comprises a distance measuring component for measuring a distance to a measuring point, a frame unit which horizontally rotates, a scanning mirror which scans a distance measuring light by rotating vertically, angle detecting components for detecting a horizontal angle of the frame unit and a vertical angle of the scanning mirror and an arithmetic control component, wherein the arithmetic control component sets a distance between measuring points adjacent in a radial direction as a first distance between measuring points, sets a distance between measuring points adjacent in a circumferential direction as a second distance between measuring points, calculates a first interval of measuring angles which becomes the first distance between measuring points and a second interval of measuring angles which becomes the second distance between measuring points at a measuring point and acquires point cloud data of a plane to be measured based on the first interval of measuring angles and the second interval of measuring angles.