Construction Machine Sensor Displacement Detection
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Solution Overview
Problem
Construction machines face challenges in accurately detecting their surrounding environment due to positional displacement of sensors caused by vibrations and external forces, leading to inaccurate recognition of interference targets and potential safety hazards.
Innovation Solution
A construction machine equipped with multiple detection units having overlapping detection areas, a position information acquisition unit, and a positional displacement detection unit that compares position information from adjacent sensors to detect and correct for positional displacements, ensuring accurate environmental data and preventing interference with the cab.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single detection unit is mounted on the construction machine to detect the distance to interference targets, then the interference prevention function is provided, but the detection accuracy deteriorates due to positional displacement from vibrations and external forces
Solution Approach 1:
The patent divides the detection system into multiple detection units (first detection unit and second detection unit) with overlapping detection areas. Each detection unit independently detects targets in its own detection area, and the system integrates information from both units. This segmentation allows the system to maintain detection coverage even when individual units experience positional displacement, thereby preserving measurement precision while ensuring reliable interference prevention.
2Measurement precision
If multiple detection units with overlapping detection areas are used to improve detection accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent merges the detection functions of multiple detection units by integrating their detection results in the information processing unit. The system combines data from the first detection unit and second detection unit, using their overlapping detection areas to cross-validate target positions and improve overall detection accuracy. This merging approach achieves enhanced measurement precision while managing device complexity through systematic data integration rather than independent processing of each sensor.
Data Source
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AI summary
To provide a construction machine that can detect a positional displacement of a detection unit. A construction machine (1) includes a body (1A), a plurality of distance sensors including a first distance sensor (111), a position information acquisition unit (125), and a positional displacement detection unit (121). The distance sensors are disposed so that detection areas of the distance sensors partially overlap. When a predetermined target is placed in an overlapping detection area where a detection area of one distance sensor overlaps a detection area of the other distance sensor, the positional displacement detection unit (121) compares position information of the target that is acquired from distance image data of the one distance sensor by the position information acquisition unit (125) to position information of the target that is acquired from distance image data of the other distance sensor by the position information acquisition unit (125) to detect a positional displacement of at least one of the one distance sensor and the other distance sensor with respect to the body (1A).