Conductivity Clamp Wear Detection via Self-Test Signal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical conductivity measuring devices in the aeronautical field face issues with clamp wear, leading to inaccurate resistance measurements due to reduced current injection capacity, causing unnecessary maintenance or false continuity assessments.
Innovation Solution
A method is introduced to control the clamp's wear by supplying an electrical test signal and comparing its intensity with a reference value, detecting wear if the difference exceeds a predetermined threshold, allowing for reliable conductivity calculations and alerting the user to replace the clamp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the clamp is used repeatedly for measuring electrical conductivity, then the productivity increases, but the clamp wears out causing measurement precision to deteriorate
Solution Approach 1:
The system performs a self-test measurement before actual conductivity measurements to detect clamp wear in advance. By checking the clamp's current injection capability beforehand, the system prevents inaccurate measurements while maintaining high productivity through continuous operational readiness.
Solution Approach 2:
The system continuously monitors the clamp's performance by comparing measured values against reference values stored in memory. When wear is detected through feedback from the self-test, the system alerts the operator and prevents further measurements, thereby maintaining measurement precision throughout the clamp's service life.
2Productivity
If the clamp wear is not detected, then the productivity remains high, but the reliability of measurement results deteriorates
Solution Approach 1:
The system performs a self-test measurement before actual conductivity measurements to detect clamp wear in advance. By checking the clamp's current injection capability beforehand, the system prevents inaccurate measurements while maintaining high productivity through continuous operational readiness.
Solution Approach 2:
The system continuously monitors the clamp's performance by comparing measured values against reference values stored in memory. When wear is detected through feedback from the self-test, the system alerts the operator and prevents further measurements, thereby maintaining measurement precision throughout the clamp's service life.
3Measurement precision
If a wear detection system is implemented, then the measurement precision is maintained, but the device complexity increases
Solution Approach 1:
The clamp performs its own self-test using its inherent electromagnetic induction capability. The measuring device's existing generator and measurement circuitry are used to test the clamp, eliminating the need for separate test equipment and minimizing additional components while maintaining measurement precision.
Solution Approach 2:
The measuring device's existing components serve dual purposes: the generator delivers test signals for wear detection and also delivers measurement signals for conductivity testing. The measurement circuitry analyzes both self-test results and actual measurements, making the system multi-functional without requiring separate dedicated components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method improves the reliability of electrical conductivity measurements by detecting clamp wear and ensuring accurate results, which can be easily implemented without additional components, reducing maintenance costs and errors.
Implementation Method 1
The clamp is connected to a generator delivering an electric current which is transmitted by electromagnetic induction from the clamp to the loop
Implementation Method 2
The same clamp collects the electric current circulating in the loop by electromagnetic induction
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to a method for checking a clamp (52) of a measuring device (5) for the electrical conductivity of a loop (6), said measuring device (5) being configured to induce an electric current in the loop (6) by means of said clamp (52), and to obtain the value of the current flowing in the loop (6) so as to determine the electrical conductivity of said loop (6), said method comprising the following steps: - during use of said clamp (52), supplying said clamp (52) with an electrical test signal delivered by said measuring device (5), then measuring, at said clamp (52), a value of intensity of the electrical test signal, and - comparing between the measured value of intensity of the electrical test signal and a reference intensity value, and, if the difference between said values is greater than a predetermined threshold, detecting wear of said clamp (52).