Laser Rangefinder Origin Displacement Compensation
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Solution Overview
Problem
Current laser rangefinders require a fixed origin point for accurate 2D or 3D measurements, limiting their use to a handheld mode due to the inherent vagaries in user positioning, which complicates the determination of displacement between disparate origin points.
Innovation Solution
A rangefinding instrument with a processor section that calculates ranges to target coordinates from disparate origin points, compensating for displacement by determining lateral and vertical positioning differences using integrated sensors like accelerometers and rate gyroscopes, allowing for accurate distance determination between targets without a fixed origin point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the rangefinding instrument is mounted on a tripod to maintain a fixed origin point, then measurement accuracy is improved, but ease of operation deteriorates due to the inability to use handheld mode
Solution Approach 1:
The patent applies parameter changes by utilizing accelerometer and rate gyroscope sensors to detect and quantify the displacement parameters (lateral and vertical positioning differences) between disparate origin points. The processor then uses these detected parameters to calculate compensation values, effectively changing the measurement parameters to account for origin displacement and enable accurate handheld operation.
2Ease of operation
If the instrument allows handheld operation with moving origin points, then ease of operation is improved, but measurement precision deteriorates due to vagaries in user positioning
Solution Approach 1:
The patent implements feedback by using sensors to continuously monitor the instrument's position and orientation changes during handheld operation. The detected displacement information is fed back to the processor, which calculates compensation values that are then applied to the measurement calculations, creating a closed-loop system that maintains accuracy despite origin point movement.
Solution Approach 2:
The system detects displacement parameters through sensors and applies parameter changes by calculating compensation values that adjust the measurement data to account for origin displacement, thereby maintaining measurement precision during handheld operation.
3Measurement precision
If the origin point is fixed for each measurement, then measurement accuracy is improved, but device complexity increases due to the requirement for tripod mounting and origin point management
Solution Approach 1:
The patent applies self-service by enabling the instrument to automatically detect its own displacement through integrated sensors and automatically calculate and apply compensation values without requiring external tripod mounting or manual origin point management. The device serves itself by monitoring and correcting for its own position changes.
Solution Approach 2:
The system automatically detects displacement parameters and applies parameter changes through compensation calculations, eliminating the need for fixed origin points and reducing device complexity while maintaining measurement accuracy.
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 handheld operation of laser rangefinders for determining distances and areas by compensating for origin displacement, providing accurate measurements without the need for a tripod, thus enhancing usability and operational efficiency.
Implementation Method 1
determining lateral and vertical positioning differences using integrated sensors like accelerometers
Implementation Method 2
incorporate magnetic sensors and accelerometers and have the capability to enable measurement of what is known as a three dimensional (3D) missing line
Implementation Method 3
a laser transmitting section for transmitting laser energy to first and second target coordinates
Implementation Method 4
a laser energy receiving section for receiving laser energy reflected back to the instrument from the first and second target coordinates
Data Source
AI summary
A system and method for determination of origin displacement for a laser rangefinding instrument which comprises laser transmitting and receiving sections coupled to a processor section. The processor section is configured to calculate ranges from the instrument to first and second target coordinates and to compensate for displacement between disparate first and second origin points in order to determine a distance between these target coordinates.