Movable Marking Positioning Using Scan-to-Map Path Correction
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Solution Overview
Problem
Existing marking systems rely heavily on human proficiency, leading to inaccuracies in marking content on working surfaces, and there is a need for machines/robots to autonomously determine their position for accurate marking.
Innovation Solution
A movable marking system that includes a data receiving unit, driver, sensing unit, scan condition setting unit, and position detecting unit to autonomously determine its position and correct deviations from a predefined movement path using reference map data and scan data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual marking is performed by workers based on original drawings, then flexibility and adaptability are maintained, but marking accuracy deteriorates and consistency becomes dependent on worker proficiency
Solution Approach 1:
The movable marking apparatus autonomously determines its own position by comparing scan data with reference map data, and automatically corrects positional deviations without human intervention. The system performs self-localization and self-correction, eliminating dependence on worker proficiency while maintaining high marking accuracy through automated feedback control
Solution Approach 2:
The patent replaces manual mechanical marking operations with an automated system that uses laser scanning, computer vision, and algorithmic position calculation. The mechanical act of manual measurement and marking is substituted by optical sensing, digital map matching, and automated positioning control, achieving superior precision and consistency
2Manufacturing precision
If a movable marking apparatus is used to automate marking operations, then marking consistency and accuracy improve, but the apparatus requires complex position detection and correction systems
Solution Approach 1:
The sensing unit serves multiple functions: it scans the working surface for position detection, captures reference data for map generation, and provides feedback for correction. The same laser scanner and camera system is used both for localization and for verifying marking accuracy, reducing the need for separate specialized components and simplifying the overall system architecture
Solution Approach 2:
The system continuously compares actual position (from scan data) with expected position (from reference map data), detects deviations, and automatically corrects them. This closed-loop feedback control enables high accuracy without requiring overly complex mechanical precision, as errors are corrected in real-time through software-based position adjustment
3Measurement precision
If the movable marking apparatus autonomously determines its position using scan data and reference map data, then position accuracy improves, but the time required for scanning and position calculation increases
Solution Approach 1:
The reference map data is generated and stored in advance before the actual marking operation. During marking, the system only needs to compare current scan data against the pre-existing reference map, rather than performing full processing from scratch. This preliminary preparation of reference data significantly reduces real-time computation requirements while maintaining high position detection accuracy
Data Source
AI summary
Provided are a movable marking system, a method of controlling a movable marking apparatus, and a computer-readable recording medium. The movable marking system is a movable marking system that includes a movable marking apparatus, and includes: a data receiver, which receives a marking data; a driver, which supplies power to the movable marking apparatus and moves the movable marking apparatus; at least one sensor, which senses a space; a sensing condition setter, which sets a movement path along which the movable marking apparatus moves; and a position detector, which detects a position of the movable marking apparatus by comparing sensing data obtained through the sensor with a reference map data. The reference map data is generated from a drawing corresponding to the space or from a former sensing process, the movable marking apparatus comprises a receiver receiving position signal received from at least one transceiver, and the position detector determines the position of the movable marking apparatus using information obtained from a transceiver and/or a marker installed in the space, thereby improving positioning accuracy of the movable marking apparatus in real-world environments.