Onboard Position Recognition for Construction Machine Work Tools
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Solution Overview
Problem
Conventional construction machine monitoring using external systems like total stations (TS) or Global Navigation Satellite Systems (GNSS) is expensive, requires specialized knowledge, and can be affected by environmental conditions, leading to inaccurate and inconvenient monitoring.
Innovation Solution
A construction machine management system with a detection sensor unit installed in the machine, which recognizes position information using external and movable indicators, allowing autonomous monitoring of the machine's position and work execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If heteronomous monitoring using external systems like TS or GNSS is used, then position monitoring can be performed, but the cost is high and specialized knowledge is required
Solution Approach 1:
The construction machine performs autonomous position monitoring using its own onboard detection sensor unit, eliminating the need for external monitoring systems. The machine detects positions of both the machine itself and the work tool independently, making the system self-sufficient and removing dependency on complex external infrastructure like total stations or satellite systems.
Solution Approach 2:
The patent extracts the monitoring function from external systems and relocates it to the construction machine itself. By installing the detection sensor unit on the machine, the monitoring capability is separated from external dependencies, allowing the machine to autonomously determine its own position and the position of its work tool without requiring external TS or GNSS infrastructure.
2Measurement precision
If heteronomous monitoring using external systems like TS or GNSS is used, then position monitoring can be performed, but specialized knowledge is required to operate
Solution Approach 1:
The construction machine autonomously performs position monitoring using its own onboard detection sensor unit, eliminating the need for operators to specialize in external monitoring systems. The machine independently detects positions and performs recognition processing, making the operation simple and accessible without requiring specialized knowledge of TS or GNSS systems.
Solution Approach 2:
The patent replaces complex external mechanical/optical systems (TS using laser beams) and satellite-based systems (GNSS) with an onboard detection sensor unit that uses image recognition technology. This substitution simplifies the system by using standard imaging devices and computer vision algorithms, which are more easily operated and maintained than specialized surveying equipment.
3Measurement precision
If external systems like TS or GNSS are used, then position monitoring can be performed, but laser beams or satellite radio waves may be interrupted by environmental conditions
Solution Approach 1:
The patent extracts the monitoring function from external systems that are vulnerable to environmental interference and relocates it to the construction machine itself. By using onboard detection sensors and indicators, the system eliminates dependency on external laser beams or satellite radio waves that can be blocked by terrain, weather, or other environmental factors.
Solution Approach 2:
The patent introduces visual indicators (external indicator installed in the work site area and movable indicator attached to the movable work tool) as intermediaries between the detection sensor unit and the objects being monitored. These visual markers serve as reliable mediators that can be detected by the onboard sensor without being affected by environmental conditions that block laser beams or satellite signals.
4Ease of operation
If autonomous monitoring with onboard detection sensor is used, then monitoring can be performed easily and accurately, but the system requires detection of both external and movable indicators
Solution Approach 1:
The patent segments the monitoring targets into two distinct components: an external indicator installed in the work site area (serving as a reference frame) and a movable indicator attached to the movable work tool. This segmentation allows the detection sensor unit to independently detect each indicator and process their relative positions, simplifying the overall recognition task by breaking it down into manageable detection steps.
Solution Approach 2:
The patent introduces visual indicators as intermediaries that bridge the gap between the detection sensor unit and the objects of interest. The external indicator provides a stable reference frame, while the movable indicator tracks the work tool position. These visual mediators simplify detection by providing high-contrast, easily recognizable targets that can be reliably detected by standard image sensors without requiring complex sensor systems.
Data Source
AI summary
A construction machine management system includes a detection sensor unit installed in a construction machine that is movable in a work site area and a position recognition unit that recognizes position information regarding a position of work executed in the work site area using a movable work tool included in the construction machine based on a detection result obtained by the detection sensor unit with respect to an external indicator installed in the work site area and a detection result obtained by the detection sensor unit with respect to a movable indicator attached to the movable work tool.