Laser Scanner Optical Axis Deflector for Target Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional laser scanners lack the tracking function necessary to accurately measure multiple points of a target, requiring sequential repositioning and measurement, which is inefficient and impractical.
Innovation Solution
A target instrument with a spherical target and a laser scanner system that includes an optical axis deflector and arithmetic control module, enabling circular scanning to determine the center of the target and maintain equal distance measurements across its circumference, allowing for accurate tracking and measurement from any direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional laser scanner is used to measure multiple points, then the measuring instrument must be repositioned sequentially at each measuring point, but this process is time-consuming and reduces productivity
Solution Approach 1:
The laser scanner is equipped with a tracking function that enables it to dynamically follow and track the target as it moves between measuring points. The optical axis deflector continuously adjusts the scanning direction to maintain the target at the center of the scan field, allowing the system to automatically adapt to target position changes without requiring manual repositioning of the scanner.
Solution Approach 2:
The system uses feedback from the target position detection to control the optical axis deflector. By detecting the target's position and using this information to adjust the scanning direction in real-time, the system maintains accurate tracking of the moving target, enabling continuous measurement without repositioning.
2Adaptability or versatility
If the laser scanner performs circular scanning to track the target, then the system can measure from any direction, but the device complexity increases due to the optical axis deflector and control module
Solution Approach 1:
The optical axis deflector serves multiple functions: it performs circular scanning to enable tracking from any direction, adjusts the scanning pattern based on target position, and works with the existing laser scanner and target instrument. This multi-functional component allows the system to maintain versatility while managing complexity through integrated design.
3Measurement precision
If the target is moved sequentially to multiple measuring points, then complete coverage is achieved, but the measurement process becomes lengthy and loses time
Solution Approach 1:
The tracking function enables continuous measurement action by automatically following the target as it moves between measuring points. The laser scanner maintains continuous scanning and measurement without interruption or pause, eliminating the time loss associated with manual repositioning and setup at each measuring point while maintaining measurement precision.
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 precise tracking and measurement of targets from all directions without repositioning, ensuring consistent distance measurements and improving the efficiency of data acquisition in surveying systems.
Implementation Method 1
a spherical target 6 provided on the pole 5 and having a function of reflecting the distance measuring light 15
Data Source
AI summary
A surveying system comprises a laser scanner for scanning a distance measuring light and for acquiring point cloud data and a target instrument having a target for reflecting the distance measuring light, wherein the target is a sphere having a known diameter, the laser scanner comprises a distance measuring module for projecting the distance measuring light, for receiving a reflected distance measuring light and for performing a distance measurement, an optical axis deflector which enables to two-dimensionally deflect the distance measuring light, and an arithmetic control module for controlling the optical axis deflector, and wherein the arithmetic control module is configured to perform a circular scan on a surface of the target by the optical axis deflector, to obtain a center of the target based on the point cloud data acquired by the circular scan and the diameter, and to measure a distance of the center of the target.