LiDAR Deviation Correction for Work Machine Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing peripheral monitoring systems for work machines face challenges in correcting deviations of position measurement devices, such as LiDAR sensors, due to vibrations or impacts, which affect detection accuracy.
Innovation Solution
A peripheral monitoring system that includes a position measurement device, position identifying members, an acquisition unit to gather position information, and an identifying unit to calculate and correct positional and posture deviations of the sensor, allowing for accurate alignment and obstacle detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a position measurement device (sensor) is installed in a work machine to detect objects in a caution area, then obstacle detection capability is improved, but the sensor may deviate from its initial installation position due to vibrations or impacts, causing detection accuracy to deteriorate
Solution Approach 1:
The system performs preliminary calibration by detecting the position of the sensor relative to the work machine body before actual obstacle detection begins. This preliminary action establishes a reference relationship that compensates for subsequent deviations caused by vibrations or impacts, maintaining detection accuracy throughout operation
Solution Approach 2:
The system continuously monitors the relative position between the sensor and the work machine body using detection means, and automatically corrects any deviations by updating the coordinate transformation parameters. This feedback mechanism ensures that detection accuracy is maintained even when the sensor position changes due to vibrations or impacts
2Stability of the object's composition
If the sensor is fixedly installed on the work machine, then detection stability is improved, but the sensor cannot be easily adjusted or replaced when deviations occur or maintenance is needed
Solution Approach 1:
The system transitions from a static fixed installation to a dynamic adjustable installation, where the sensor can be repositioned along the rotation axis of the turntable. This dynamic mounting approach allows the sensor to be easily adjusted or replaced while maintaining stable detection through continuous position calibration
3Area of stationary object
If the sensor is installed on a rotating platform to expand measurement range, then coverage area is improved, but the sensor position and orientation may change during rotation, complicating coordinate transformation and detection accuracy
Solution Approach 1:
The system establishes a universal coordinate transformation framework that works regardless of the sensor's rotational position. By detecting the sensor's position relative to the work machine body at any orientation and automatically calculating the appropriate transformation parameters, the system simplifies the complexity of coordinate transformation while maintaining expanded measurement coverage
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
The system effectively corrects sensor deviations, improves detection accuracy, and allows for efficient obstacle detection without obstructing the measurement range, even during transportation and assembly/disassembly processes.
Implementation Method 1
a position measurement device (sensor such as LiDAR) is installed in a work machine in order to detect an object
Data Source
AI summary
A peripheral monitoring system for a work machine includes a position measurement device that measures a position of an object, a position identifying member provided for the work machine, an acquisition unit that acquires position information of the position identifying member with the position measurement device, and an identifying unit that identifies a position of the position measurement device based on the position information acquired by the acquisition unit, in which the position identifying member is detachably installed on the work machine.