Excavator Instability Monitoring With Continuous Threshold Feedback
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Solution Overview
Problem
Existing systems present the degree of excavator instability as discrete variables, making it difficult for operators to accurately assess the movement causing instability, leading to potential inefficiencies due to premature cessation of operations.
Innovation Solution
The system outputs instability degree information as continuous variables, using visual, auditory, and tactile feedback to accurately convey the closeness to instability thresholds, allowing operators to operate within a tolerable range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If instability degree is presented as discrete variables, then the system complexity is reduced, but the measurement precision of instability level deteriorates
Solution Approach 1:
The patent changes the parameter representation from discrete categories (low/medium/high) to continuous numerical values (0-100 scale). This allows the instability degree to be expressed with fine granularity, enabling precise measurement while maintaining simple system architecture through straightforward sensor data processing.
Solution Approach 2:
The patent replaces complex mechanical judgment systems with electronic computation and display. The control unit calculates instability degree from sensor data and the display unit presents it numerically, substituting mechanical complexity with electronic processing that achieves both simplicity and precision.
2Ease of operation
If discrete instability ranges are used, then the ease of operation is improved, but the loss of information increases
Solution Approach 1:
The patent implements continuous feedback by displaying the precise numerical instability degree (0-100 scale) to the operator. This allows the operator to see the exact level of instability and make informed decisions, preventing information loss while maintaining ease of operation through clear numerical presentation.
Solution Approach 2:
The patent transforms categorical instability information into continuous numerical parameters that preserve all measurement details. The numerical scale maintains complete information about the base body's stability state while remaining easy to interpret and act upon.
Data Source
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AI summary
A system capable of improving accuracy of information relating to the degree of instability of a work machine such as an excavator, the information being provided to an operator of the work machine. Instability degree information, which indicates instability degrees Is1, Is2 of a base body (lower traveling body 410 and upper turning body 420) for which instability values have been assessed as continuous variables, is output to a remote image output device 221 (information output device) such that the form of the output varies continuously depending on continuous changes in the instability degrees Is1, Is2. An operator of a work machine 40 can highly accurately recognize the closeness of the current instability degree of the base body to a threshold value at which the base body becomes unstable, and consequently a tolerable range in which the work mechanism, etc. are operated while avoiding instability of the base body.