Perpendicular Laser Detector Assembly for Ranging Accuracy
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Solution Overview
Problem
Conventional laser ranging systems using a single-axis rotating laser level are prone to inaccurate distance measurements due to complex structures and high production costs, with errors being uncontrollable and the inability to guarantee accurate distances in all directions.
Innovation Solution
A detector assembly with a first and second laser receiving unit arranged perpendicularly, where the second unit has separate portions for receiving laser beams from two emitting modules, allowing for precise distance calculation using trigonometric relationships and reducing the need for multiple light sensors and circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-axis rotating laser level is used for ranging, then the construction convenience is improved, but the measurement precision deteriorates due to uncontrollable errors
Solution Approach 1:
The patent transitions from single-axis rotation to three-axis rotation (adding vertical and lateral axes), creating a spherical scanning pattern. This dimensional expansion allows the laser beam to reach the detector from multiple directions, enabling error correction through geometric relationships and significantly improving measurement precision while maintaining operational convenience.
2Measurement precision
If multiple light sensors and circuits are used to improve measurement accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent makes the three-axis rotating laser level serve multiple functions: it acts as both a leveling instrument for projecting horizontal reference lines and a ranging device for distance measurement. By integrating these functions into a single instrument, the patent avoids the need for separate devices with multiple sensors and circuits, thereby reducing overall system complexity while maintaining measurement precision.
3Ease of manufacture
If a single-axis rotating laser level is used, then the production cost is reduced, but the measurement precision deteriorates
Solution Approach 1:
The patent implements a dynamic three-axis rotation mechanism that allows the laser beam to scan in a spherical pattern. This dynamic capability enables the system to collect distance measurement data from multiple angles and positions, providing redundant measurements that can be processed to eliminate errors. The dynamic scanning approach maintains manufacturing simplicity while achieving high measurement precision through computational geometry.
4Device complexity
If only one direction laser receiving is implemented, then the device complexity is reduced, but the measurement precision deteriorates due to inability to form isosceles triangle
Solution Approach 1:
The patent deliberately creates an asymmetric three-dimensional detector assembly structure with receiving units positioned at different spatial locations and orientations. This asymmetric arrangement enables the formation of isosceles triangles with the laser source, providing geometric constraints that allow for accurate distance calculation and error correction, thereby improving measurement precision without excessive complexity.
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 configuration enables accurate and precise measurement of straight-line distances between the laser level and the detector assembly, simplifying the structure and reducing production costs while improving measurement precision.
Implementation Method 1
a first laser receiving unit configured to receive laser emitted from a first laser emitting module
Implementation Method 2
detect the time difference when the light beam is rotated from the first position to the second position
Implementation Method 3
an independent first receiving circuit and a second receiving circuit... respectively include a conversion circuit connected to a light sensor to convert the current signal into a voltage signal
Data Source
AI summary
The present disclosure relates to a detector assembly, a detector, and a laser ranging system. The detector assembly includes a first laser receiving unit configured to receive laser emitted by a first laser emitting module or a laser level, and a second laser receiving unit configured to be substantially perpendicular to the first laser receiving unit. The second laser receiving unit includes a first portion used for receiving laser emitted by a second laser emitting module of the laser level and a second portion used for receiving the laser emitted by the second laser emitting module of the laser level, where the first portion is separated from the second portion by a first distance.