3D Laser Measuring System With Angle-Based Modulation
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Solution Overview
Problem
Existing laser measuring systems face challenges in simultaneously calculating positions using multiple independent laser receivers without communication with the laser transmitter, particularly in achieving high precision 3D positioning.
Innovation Solution
A 3D laser measuring system is developed by combining N-beams with angle-based modulation and reflective surfaces on both the laser transmitter and receiver, allowing the receiver to estimate its azimuthal position and calculate distance using modulated signals, enabling full 3D positioning without transmitter communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple independent laser receivers are used to simultaneously calculate positions, then measurement capability and productivity are improved, but the ability to utilize multiple receivers without communication with the laser transmitter remains challenging due to system complexity
Solution Approach 1:
Each laser receiver independently calculates its own 3D position by receiving modulated laser signals and using angle-based modulation to determine azimuthal position and distance without requiring communication with the laser transmitter or other receivers. The system makes each receiver self-sufficient in position calculation
Solution Approach 2:
The system uses angle-based modulation where the laser transmitter modulates the laser signal with azimuth angle information. Receivers detect these modulated signals and extract position parameters, transforming the measurement problem into signal parameter analysis that can be done independently by each receiver
2Measurement precision
If N-beams with angle-based modulation are used, then measurement precision is improved, but the need for transmitter communication to coordinate multiple receivers increases system complexity
Solution Approach 1:
The system extracts all necessary position information directly from the modulated laser signals themselves. The azimuth angle modulation and distance encoding are embedded in the optical signals, allowing receivers to extract position data without requiring separate communication channels or coordination with the transmitter
Solution Approach 2:
The modulated laser signal serves multiple functions simultaneously: it provides the measurement beam, encodes azimuth angle information through modulation, and carries distance information. This multi-functionality eliminates the need for separate communication systems while maintaining high measurement precision
3Productivity
If multiple receivers operate simultaneously without shading each other, then operational efficiency is improved, but achieving independent coordinate calculations without transmitter communication increases device complexity
Solution Approach 1:
The system segments the position calculation process into independent components that each receiver can execute autonomously. Each receiver independently processes the modulated signals to determine its own azimuthal position and distance, without requiring coordination or communication with other receivers or the transmitter
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 accurate full 3D positioning with independent coordinate calculations, allowing various combinations of measurements, and supports multiple receivers to measure angles simultaneously without shading each other, enhancing precision and operational efficiency.
Implementation Method 1
a projection of a laser beam by a rotary irradiation (e.g., a laser transmitter) for the purpose of forming a horizontal reference plane or a reference plane tilted with respect to the horizontal reference plane
Implementation Method 2
configured with a reflective surface for signal shift measuring to facilitate full 3D positioning
Implementation Method 3
Each array of the laser receiver includes multiple individual photo detectors and associated monitoring circuitry
Data Source
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AI summary
A laser measuring system is provided by combining N-beams, angle based modulation and a laser receiver and laser transmitter configured with corner reflectors for signal shift measuring to facilitate full three dimensional positioning.