Tire Conductivity Testing Electrode Arrangement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for checking the electrical conductivity of vehicle tires are incomplete, inaccurate, and inefficient, failing to ensure that tires can discharge static electricity effectively, particularly when stationary, and are not compatible with high-speed production line requirements.
Innovation Solution
A method and apparatus using multiple pairs of electrodes spaced apart to check the electrical conductivity of vehicle tires, allowing for precise and complete verification of tire conductivity by applying voltage between specific portions of the tire, which are stationary with respect to the electrodes, and integrating this process into the tire production line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single electrode pair is used to measure electrical resistance between tread and bead, then the measurement process is simple, but the verification of tire conductivity is incomplete and inaccurate
Solution Approach 1:
The single electrode pair is segmented into multiple electrode pairs positioned at different angular locations around the tire circumference. Each electrode pair measures conductivity in a specific sector, and the results are combined to provide complete verification of the entire tire's conductivity, resolving the contradiction between measurement simplicity and verification completeness.
Solution Approach 2:
The measurement approach transitions from a single point measurement to a distributed spatial arrangement of multiple electrode pairs around the tire circumference. This dimensional expansion from one location to multiple locations enables complete conductivity verification while maintaining the simplicity of individual measurement points.
2Productivity
If existing electrode arrangements are used, then the device structure is simple, but the checking process is too slow for high-speed production line requirements
Solution Approach 1:
Multiple electrode pairs enable parallel measurement of different tire sectors simultaneously, creating continuous and comprehensive conductivity verification without time loss. The system maintains continuous measurement capability across all tire circumferential positions, eliminating the time penalties associated with sequential measurement of single electrode pairs.
3Measurement precision
If a single electrode pair measures average electrical conductivity, then the measurement process is fast, but it cannot detect local non-conductive areas in the tread
Solution Approach 1:
The tread surface is segmented into multiple angular sectors, each measured by a dedicated electrode pair. This segmentation enables detection of local non-conductive areas while maintaining measurement speed, as each sector can be measured independently and simultaneously.
Solution Approach 2:
Each electrode pair is positioned to measure conductivity in a specific local sector of the tread, providing localized quality information. This local measurement approach enables detection of non-conductive areas without sacrificing overall measurement speed, as all local measurements occur in parallel.
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
The solution provides improved accuracy, completeness, and speed in verifying tire conductivity, ensuring that tires can discharge static electricity effectively and are suitable for integration into the production line, enhancing safety and efficiency by ensuring all tires meet regulatory standards.
Implementation Method 1
applying voltage between specific portions of the tire, which are stationary with respect to the electrodes
Implementation Method 2
checking the electrical conductivity of tyres for vehicle wheels
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A method for checking the electrical conductivity of tyres for vehicle wheels comprises: associating a tyre (2) with a plurality of angularly spaced pairs of electrodes, each pair of electrodes comprising a radially internal electrode (19) and a radially external electrode (18), wherein the radially external electrode (18) rests against a tread (9) of the tyre (2) and the radially internal electrode (19) rests against a bead (7) of the tyre (2). The radially external electrode (18) and the radially internal electrode (19) are substantially aligned with each other along a radial direction of the tyre (2). The method further provides for generating a voltage between the radially external electrode (18) and the radially internal electrode (19) and obtaining an electrical resistance value between the radially external electrode (18) and the radially internal electrode (19) of each pair of electrodes.