Surveying Plan View Guidance for Accurate Cross-Section Observation
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Solution Overview
Problem
In cross-sectional observation, workers cannot visually recognize the position to be measured relative to the set cross-section, leading to potential distance errors, especially in areas with steep gradients, as the cross-section is not physically indicated on-site.
Innovation Solution
A surveying assistance device and system that includes a processor to read design information, display a plan view with the current position of the surveyed device, and show reference lines indicating the distance limits from the designated section, issuing warnings or preventing data recording if the device exceeds these limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cross-sectional observation is performed without visual indicators of the set cross-section, then the surveying method is simple and easy to operate, but the worker cannot recognize the position relative to the section, leading to distance errors
Solution Approach 1:
The patent creates a virtual plan view that copies the actual site layout and displays it on the worker's portable device. This virtual representation includes the set cross-section positions and the worker's current position, allowing visual recognition without adding physical markers to the site. The plan view is updated in real-time based on position information from the surveyed device, enabling the worker to see their relative position to the cross-section and adjust accordingly.
2Productivity
If the worker moves between observation points to acquire data, then the surveying process is efficient and productive, but the worker may accidentally measure at incorrect positions, causing critical height differences
Solution Approach 1:
The system continuously provides feedback to the worker by displaying their current position on the plan view and showing the distance to the nearest cross-section. When the worker approaches or deviates from the correct measurement position, the system alerts them through visual indicators. This real-time feedback loop allows the worker to maintain high productivity by moving freely while ensuring reliability by correcting position errors before they result in critical measurement mistakes.
3Device complexity
If design information is read and displayed without real-time position tracking, then the system complexity is low, but the worker cannot recognize whether the measurement position is on the set cross-section
Solution Approach 1:
The portable device performs multiple functions: it displays the plan view, tracks the worker's position using the surveyed device, calculates distance to cross-sections, and provides visual alerts. By consolidating these functions into a single portable device, the system avoids the need for complex separate systems while preventing information loss about the worker's position relative to the cross-section.
Data Source
AI summary
A surveying assistance device is a computer configured to read design information including center point data of a center point set on a centerline of a route and constituent point data of constituent points set on a section including the center point, the section being orthogonal to the centerline, acquire position information indicating a current position of a surveyed device with a predetermined period, creates a plan view from the design information and display the plan view on a terminal screen unit, display the current position on the plan view and updates the display every time the position information is acquired, record the acquired position information in a storage as an observation data, and display reference lines indicating positions which are distant from the designated section backward and forward in a route direction by a preset distance limit on the plan view.