Reflective Pole Surveying System for Remote Point Designation
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Solution Overview
Problem
Conventional surveying systems face difficulties in smoothly designating a measuring point when a worker is positioned away from the surveying instrument, due to a mismatch between the viewing point of the worker and the camera's viewing point.
Innovation Solution
A surveying system incorporating a trigger device with a high-reflectance pole and an arithmetic control module that performs a search scan using distance measuring light to calculate the three-dimensional coordinates of the measuring point, allowing for visual confirmation and designation of the point from a distant location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a worker operates the surveying instrument from a distance using a remote device, then the worker's safety and comfort are improved, but the ability to accurately designate the measuring point deteriorates due to viewing point mismatch
Solution Approach 1:
The patent uses a camera to capture images of the measuring point and transmits them to the remote device, creating a visual copy of the scene. This allows the worker to see the measuring point from the camera's perspective and accurately designate it despite being physically distant from the surveying instrument.
Solution Approach 2:
The patent introduces a communication unit as an intermediary between the surveying instrument and the remote device. This intermediary transmits images and operation signals, bridging the gap between the worker's remote location and the instrument's viewing point, thereby enabling accurate measuring point designation.
2Ease of operation
If the surveying instrument uses a camera to capture images for measuring point designation, then the worker can visually confirm the object, but the complexity of the system increases due to additional components
Solution Approach 1:
The patent integrates a camera into the surveying instrument, making it multi-functional. The camera serves both as a viewing aid for the worker to visually confirm the measuring point and as a data collection tool for the surveying system, thereby adding functionality without proportionally increasing complexity.
3Measurement precision
If the surveying system performs comprehensive scans to acquire point cloud data, then the measurement accuracy is improved, but the data acquisition time increases
Solution Approach 1:
The patent performs a preliminary search scan to acquire point cloud data of the target object before the actual measurement. This preliminary action prepares the data structure in advance, allowing the system to quickly identify and measure the measuring point without performing comprehensive scans during the measurement phase, thereby reducing data acquisition time.
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 easy and accurate designation of the measuring point even when the worker is not aligned with the surveying instrument's camera view, improving workability and reducing data acquisition time and costs.
Implementation Method 1
the trigger device includes a pole configured to have a high reflectance on a peripheral surface
Data Source
AI summary
A surveying system includes a distance measuring unit for performing the distance measurement based on the distance measuring light, an optical axis deflector configured to enable two-dimensionally deflecting the optical axis of the distance measuring light, a projecting direction detecting module for performing the angle measurement of the optical axis of the distance measuring light, and an arithmetic control module performs captures the pole by a scan pattern having a predetermined shape, acquires the point cloud data of at least two positions where the scan pattern crosses the pole, calculates an axis of the pole, calculates a direction vector, performs a linear scan along the direction vector, determines as a measuring point a point where an intersection of the optical axis of the distance measuring light and the direction vector coincides or substantially coincides with a measurement result, and calculates the three-dimensional coordinates of the measuring point.