Work Machine Calibration Using Attitude Sensor Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The accuracy of position detection in work machines is affected by component tolerances and wear, leading to variability and increased complexity in calibration processes, particularly when using external measurement apparatuses.
Innovation Solution
A system and method that utilize an attitude sensor, positional sensor, storage device, and processor to simplify calibration by reducing the number of measurement points through the acquisition and application of calibration data from an external measurement apparatus, incorporating attitude data to calibrate machine data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed using an external measurement apparatus such as a total station, then the accuracy of work implement positioning is improved, but the number of measurement points increases and calibration work becomes complicated
Solution Approach 1:
The patent introduces an attitude sensor as an intermediary device between the external measurement apparatus and the calibration system. The attitude sensor captures attitude data of the vehicle body, which serves as a mediator to reduce the number of measurement points required while maintaining calibration accuracy. This intermediary approach allows the system to leverage orientation information to simplify the calibration process.
Solution Approach 2:
The patent changes the calibration parameters by incorporating attitude data from the attitude sensor into the calibration process. Instead of requiring multiple positional measurement points, the system uses attitude parameters (orientation angles) combined with fewer measurement points to achieve accurate calibration. This parameter transformation reduces the complexity of calibration work while maintaining precision.
2Device complexity
If the number of measurement points is reduced to simplify calibration work, then the complexity of calibration is reduced, but the accuracy of position detection may deteriorate
Solution Approach 1:
The patent merges the attitude data from the attitude sensor with the calibration measurements from the external measurement apparatus. By combining these two data sources, the system achieves accurate calibration with fewer measurement points. The merging of attitude information and positional measurement allows the system to maintain precision while reducing calibration complexity.
Solution Approach 2:
The attitude sensor acts as an intermediary that provides orientation information to complement the positional measurements. This intermediary data allows the system to infer additional calibration information without requiring additional measurement points, thereby maintaining accuracy while simplifying the calibration process.
Data Source
AI summary
A work machine includes a vehicle body and a work implement attached to the vehicle body. A system calibrates the work machine by using an external measurement apparatus. The system includes an attitude sensor, a positional sensor attached to the vehicle body, a storage device, an input device and a processor. The attitude sensor outputs attitude data indicative of an attitude of the vehicle body. The storage device stores machine data indicative of a position of the positional sensor in a vehicle body coordinate system. The input device receives an input of calibration data including a position of a predetermined measurement point on the work machine measured by the external measurement apparatus, and a position of the positional sensor measured by the external measurement apparatus. The processor calibrates the machine data based on the calibration data and the attitude data.