Work Machine Event Recording via Manipulation-State Discrepancy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing techniques for event recording in work machines, such as excavators, face challenges in accurately detecting vehicle behavior due to vibrations during work, which can lead to false readings from acceleration sensors, making it difficult to capture relevant video data for incident analysis.
Innovation Solution
An information processing device equipped with an image acquisition unit, manipulation information acquisition unit, state detection unit, and recording control unit that determines and records discrepancies between manipulation and state information, ensuring event recording even during work-related vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If acceleration sensors are used to detect vehicle behavior, then automatic event recording can be implemented, but false readings occur due to vibrations during work
Solution Approach 1:
The patent introduces an intermediary comparison mechanism between manipulation information (operator input) and state information (actual machine state). This intermediary comparison layer filters out false readings from acceleration sensors by cross-validating against the expected manipulation state, thereby resolving the contradiction between automated recording and measurement precision during vibrations.
Solution Approach 2:
The system implements feedback by continuously comparing state information with manipulation information and using this comparison result to control recording operations. The feedback loop detects discrepancies between intended and actual machine behavior, allowing the system to adjust recording actions accordingly, thus maintaining measurement accuracy despite vibrations.
2Reliability
If continuous video recording is performed, then complete event data can be captured, but storage space is consumed and irrelevant data is recorded
Solution Approach 1:
The patent applies preliminary action by determining in advance whether to record based on the comparison between manipulation and state information. Instead of continuous recording, the system performs a preliminary determination of event conditions and only initiates recording when discrepancies are detected, thereby reducing data volume while maintaining reliability of captured events.
Solution Approach 2:
The recording control dynamically adjusts recording behavior based on real-time comparison results. The system transitions between recording and non-recording states according to the dynamic relationship between manipulation and state information, optimizing the balance between data completeness and storage efficiency.
3Measurement precision
If recording control is added to filter events, then data quality improves, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the information processing device where existing components (manipulation information acquisition unit, state detection unit) serve dual purposes: their primary functions plus the additional function of event determination through comparison. This multi-functionality approach improves event detection accuracy without proportionally increasing device complexity.
Solution Approach 2:
The system merges the event determination function with the existing information processing flow by combining manipulation information acquisition, state detection, and recording control into a unified processing architecture. This integration approach achieves improved measurement precision while minimizing the increase in device complexity through functional consolidation.
Data Source
AI summary
An information processing device includes an image acquisition unit that acquires an image around a work machine, a recording unit that records the image acquired by the image acquisition unit, a manipulation information acquisition unit that acquires manipulation information relating to a manipulation of the work machine, a state detection unit that detects a state of the work machine and that acquires state information relating to the state, a determination unit that determines whether there is a predetermined difference between the manipulation information acquired from the manipulation information acquisition unit and the state information acquired from the state detection unit, and a recording control unit that causes, in a case where the determination unit determines that there is the difference, the recording unit to record the image including at least an image at a point in time at which the determination is made that there is the difference.