Work Machine Load Integration via Angle and Pressure Thresholds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing work machines struggle to accurately distinguish between loading operations and similar non-loading operations, leading to erroneous integration of loads and reduced accuracy in calculating the loadage of transportation machines, particularly in cleaning works where no material is being loaded.
Innovation Solution
A work machine equipped with a load measuring system that uses a combination of sensors and algorithms to differentiate between loading and non-loading operations by monitoring boom and bucket angles, pressures, and operation speeds, and adjusts the minimum integration load value based on the type of operation, ensuring accurate integration only during loading cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the work machine integrates all loading operations including similar non-loading operations, then the integration coverage is improved, but the measurement precision of loadage calculation deteriorates
Solution Approach 1:
The patent applies local quality by setting different integration thresholds for different operational contexts. The controller distinguishes between loading operations and similar non-loading operations by comparing the measured load value against a predetermined threshold, integrating only when the load exceeds the threshold. This selective integration approach ensures that genuine loading operations are captured while excluding false positives from cleaning or positioning maneuvers.
2Measurement precision
If the work machine uses multiple sensors and algorithms to distinguish operations, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements multi-functionality by using a single integrated control unit that performs multiple functions: it receives data from various sensors (boom angle sensor, bucket angle sensor, load sensor), processes the information through algorithms, determines operation types, and controls integration accordingly. This centralized approach consolidates what could be multiple separate systems into one universal controller, reducing overall system complexity while maintaining high measurement precision.
Solution Approach 2:
The patent utilizes parameter changes by monitoring variations in operational parameters (boom angle, bucket angle, load value) to distinguish between different operation types. The controller analyzes changes in these parameters over time and uses them as inputs for determining whether to integrate the load. This parameter-based approach provides accurate operation distinction without requiring complex additional hardware.
3Productivity
If the work machine integrates loads during cleaning operations, then the productivity measurement is improved, but the reliability of loadage data deteriorates
Solution Approach 1:
The patent implements feedback by continuously monitoring the load value and comparing it against the predetermined threshold, then using this feedback to control the integration process. The system receives feedback from sensors about current operational state, adjusts its integration behavior accordingly, and maintains reliable loadage data by only integrating when the feedback indicates a genuine loading operation. This feedback mechanism ensures that cleaning operations do not contaminate the loadage data while still allowing comprehensive tracking of actual loading productivity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A controller 21 mounted on a work machine calculates a target carried load representing a target value for a carried load carried by the work machine on the basis of loadage of a transportation machine in case the loadage is changed, calculates a minimum integration load value depending on the magnitude of the calculated target carried load, and calculates the loadage by integrating the carried load in case it is determined that a work implement has performed a loading operation on the transportation machine and in case the calculated carried load is equal to or larger than the minimum integration load value.