Crane Vehicle Load Factor Triggered Image Recording
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Solution Overview
Problem
Existing crane vehicle systems require high capacity storage and power consumption to continuously record image data, making it impractical and costly for accident investigation.
Innovation Solution
A crane vehicle equipped with a digital camera, storage unit, and controller that starts recording image data only when specific conditions are met, such as a load factor exceeding 90%, allowing concurrent storage of measurement values, reducing unnecessary recording and thus storage and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous recording of image data is implemented, then complete accident investigation capability is improved, but storage capacity and power consumption increase significantly
Solution Approach 1:
The system pre-defines specific recording trigger conditions (load factor ≥90%, toppling detection, over-hoisting detection) before accidents occur. When these conditions are met, recording automatically starts. This preliminary setup ensures that critical accident data is captured without requiring continuous recording, thus resolving the contradiction between complete investigation capability and storage capacity requirements.
2Reliability
If continuous recording of image data is implemented, then complete accident investigation capability is improved, but power consumption increases significantly
Solution Approach 1:
Instead of continuous recording, the system employs periodic recording triggered by specific conditions (load factor thresholds, toppling detection, over-hoisting detection). The camera operates intermittently - recording only when predetermined conditions are met and stopping when conditions are no longer met. This periodic operation mode significantly reduces power consumption while maintaining the ability to investigate accidents when they occur.
3Quantity of substance
If recording is triggered by load factor threshold, then relevant accident data is captured, but normal operation recording may be missed
Solution Approach 1:
The system merges multiple recording trigger conditions into a unified recording control mechanism. Besides load factor threshold (≥90%), it also incorporates toppling detection and over-hoisting detection. When any of these conditions are met, recording is triggered. This combination ensures comprehensive accident data capture while maintaining storage efficiency by avoiding redundant recording during normal operations.
Data Source
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AI summary
[Problem to be solved] To provide a crane vehicle capable of analyzing a situation of an accident occurred during operation at low cost. [Solution] A rough terrain crane is equipped with dashboard cameras and digital cameras for capturing bird's-eye view image thereof. The equipment performs, when a load factor reaching 90%, a process of recording start for starting image data recording with the digital camera and a process of storing measurement value for recording a load factor concurrently with the process of recording start. The image data is recorded with the digital camera associated with the above activation condition, among the digital cameras installed in the rough terrain crane.