Tire groove measuring device and tire groove measuring method
The tire groove measuring device addresses the issue of blind spots and reduced accuracy in conventional systems by using a camera with two imaging units and a light projection unit to improve the measurement of tire groove depth, resulting in enhanced accuracy and precision.
JP7648428B2Active Publication Date: 2025-03-18TOYO TIRE CORP
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Patent Information
- Application Number
- JP2021072090
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-04-21
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-04-21
AI Technical Summary
Technical Problem
Conventional tire groove measuring devices experience errors and reduced accuracy due to blind spots at the bottom of deep tire grooves when cameras are positioned close to the tire.
Method used
A tire groove measuring device and method that includes a light projection unit, a camera with two imaging units aligned in the direction of the tire groove, and a calculation unit to determine the positive opposition relationship between the tire's outer surface and the camera, thereby reducing blind spots and improving measurement accuracy.
Benefits of technology
The proposed solution enhances the accuracy of measuring tire groove depth by reducing blind spots and improving the calculation of the tire's three-dimensional shape, leading to more precise wear condition assessments.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a tire groove measuring device and a tire groove measuring method that can improve the accuracy in measuring the depth of a tire groove.SOLUTION: A tire groove measuring device 100 comprises: a camera 1; a facing calculation unit 63a as a calculation unit; and a determination unit 63b. The camera 1 has a light projection unit 2 that projects pattern light for measurement on the tire, and two imaging units 3 that are arranged in the same direction as a direction in which the tire groove extends. The facing calculation unit 63a calculates the facing relationship between an outer surface of the tire and the camera 1 based on the images photographed by the imaging units 3. The determination unit 63b determines whether the outer surface of the tire and the camera 1 face each other based on a result of calculation made by the facing calculation unit 63a.SELECTED DRAWING: Figure 3
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