Work Machine Monitoring With Reception Surface Contamination Detection
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Solution Overview
Problem
The reception surface of measurement devices on work machines can become contaminated, leading to inadequate monitoring of the work machine's situation and environment, necessitating a technique to detect the presence or absence of contamination.
Innovation Solution
A monitoring system for work machines comprising a measurement data acquisition unit, a vehicle body data acquisition unit, a state determination unit, a processing unit, and a contamination determination unit to determine the presence or absence of contamination on the reception surface of the measurement device based on the state of the work machine and target recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a measurement device is used to monitor the work machine, then monitoring capability is improved, but the reception surface may become contaminated leading to measurement errors
Solution Approach 1:
The patent introduces a contamination determination unit as an intermediary component that assesses the reception surface condition before measurements are taken. This mediator evaluates whether contamination is present and determines if measurement results should be trusted, thereby protecting the measurement system from contaminated surface errors without preventing the measurement device from functioning.
Solution Approach 2:
The system implements feedback by continuously monitoring the reception surface condition and using this information to adjust measurement interpretation. The contamination determination unit provides feedback about surface condition to the monitoring system, allowing the system to account for potential contamination effects and maintain measurement reliability despite the presence of contamination risk.
2Reliability
If the reception surface is monitored for contamination, then measurement reliability is improved, but system complexity increases
Solution Approach 1:
The contamination determination unit is designed to perform multiple functions: it assesses reception surface contamination, determines measurement reliability, and provides guidance on whether measurements should be used. By combining these functions into a single multi-functional component, the system achieves improved measurement reliability without proportionally increasing overall system complexity.
Solution Approach 2:
The system performs self-diagnosis by automatically assessing its own reception surface condition through the contamination determination unit. This self-service capability allows the system to monitor its own reliability without requiring external inspection equipment or additional complex monitoring infrastructure, thereby improving measurement reliability with minimal added complexity.
Data Source
AI summary
A monitoring system of a work machine includes: a measurement data acquisition unit mounted on the work machine and configured to acquire measurement data of a measurement device that measures a target; a vehicle body data acquisition unit configured to acquire vehicle body data indicating a state of the work machine; a state determination unit configured to determine the state of the work machine based on the vehicle body data; a processing unit configured to process the measurement data and recognize the target; and a contamination determination unit configured to determine presence or absence of contamination of a reception surface of the measurement device based on the state of the work machine determined by the state determination unit and a recognition result of the target by the processing unit.