KR20110051512A - Measurging apparatus for dynamic wheel alignment - Google Patents

Measurging apparatus for dynamic wheel alignment Download PDF

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Publication number
KR20110051512A
KR20110051512A KR1020090108128A KR20090108128A KR20110051512A KR 20110051512 A KR20110051512 A KR 20110051512A KR 1020090108128 A KR1020090108128 A KR 1020090108128A KR 20090108128 A KR20090108128 A KR 20090108128A KR 20110051512 A KR20110051512 A KR 20110051512A
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KR
South Korea
Prior art keywords
tire
wheel alignment
wheel
image
measuring
Prior art date
Application number
KR1020090108128A
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Korean (ko)
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KR101091032B1 (en
Inventor
최영삼
Original Assignee
한국타이어 주식회사
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Priority to KR1020090108128A priority Critical patent/KR101091032B1/en
Publication of KR20110051512A publication Critical patent/KR20110051512A/en
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Publication of KR101091032B1 publication Critical patent/KR101091032B1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes
    • G01B11/275Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles
    • G01M17/013Wheels
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/1765Method using an image detector and processing of image signal
    • G01N2021/177Detector of the video camera type
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • G01N21/5907Densitometers
    • G01N2021/5957Densitometers using an image detector type detector, e.g. CCD

Abstract

PURPOSE: A device for measuring dynamic wheel alignment is provided to simplify a measuring structure by using the specific circular pattern inscribed tire and a CCD camera. CONSTITUTION: A device for measuring dynamic wheel alignment comprises a tire, front and back wheel shafts(400,410), and a CCD camera(Charge Coupled Device camera). A tire bead part is colored, and a plurality of circular patterns is indicated in order to make the wheel alignment of the tire to be measured during driving. The front and back wheel shafts are assembled to make the colored and patterned part to be located in the inside. The CCD camera is installed on the center part of front and back wheels.

Description

Dynamic Wheel Alignment Measuring Device {MEASURGING APPARATUS FOR DYNAMIC WHEEL ALIGNMENT}
The present invention relates to an apparatus for measuring wheel alignment, and more particularly, to an apparatus for easily predicting wear performance by easily measuring a wheel alignment of a vehicle while driving.
The wheel alignment of the vehicle plays a very important role in tire wear. In particular, the camber and toe angles, which are closely related to tire wear, are the basis and important implications of vehicle wheel alignment measurements. In general, by measuring a combination of the camber angle and the toe angle of the vehicle, it is possible to predict the wear pattern and life of the tire.
However, the wheel alignment of the vehicle is currently measured only in the stationary state where the vehicle is stopped, which makes it difficult to predict the wear performance of the tire. Here, in order to more accurately predict the wear performance of the tire due to the wheel alignment, it is necessary to measure the wheel alignment in real time while driving.
As an alternative, an apparatus for measuring wheel alignment in real time while driving is designed by detecting the movement of the marking jig attached to the wheel with a CCD camera as shown in FIG. 1, but the measuring device is expensive and four wheels are used for a passenger vehicle. And there is a problem in the form of mounting on the vehicle chassis according to the constraints, depending on the vehicle model, and the measurement device is complicated to have a lot of time consuming installation time. Accordingly, there is a situation in which a wheel alignment measurement of a vehicle is easy and simplified while driving.
The present invention is to solve the conventional problems as described above, a dynamic wheel alignment measuring device that can easily measure the wheel alignment by converting the degree of shape and size change of a plurality of circular patterns engraved on the surface of the tire while driving in an angle It aims to provide.
In order to achieve the object of the present invention as described above, and to perform the characteristic functions of the present invention described below, the characteristic configuration of the present invention is as follows.
According to an aspect of the present invention, a tire manufactured by coloring a bead portion of a tire in order to measure wheel alignment of a tire while driving and displaying a plurality of circular patterns in a circular form in the painted area, the prototype of the tire A wheel alignment measuring device including a front / rear shaft for attaching a tire with a pattern and a painted area inward, and a CCD camera installed at an intermediate point between the front and rear axles to measure a wheel alignment changing while driving toward the tire. Is provided.
Here, the CCD camera acquires the camber angle of the wheel alignment by comparing the relative size change of the upper image and the lower image after acquiring the upper image of the smaller circular pattern and the lower image of the larger circular pattern among the measured tire images. It has the advantage of measuring accurately.
In addition, the CCD camera has an advantage of accurately measuring the toe angle of the wheel alignment by comparing the relative size change of the left and right images of the measured tire image.
As described above, the present invention is easier to install in a simpler form than the existing dynamic wheel alignment measuring equipment using a specific circular patterned tire and CCD camera, and more accurate tire wear performance by measuring the dynamic wheel alignment of the vehicle. The effect of predicting is achieved.
The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
2 and 3 are views showing the configuration of the wheel alignment measuring apparatus 10 according to an embodiment of the present invention by way of example.
As shown, the wheel alignment measurement apparatus 10 according to an embodiment of the present invention includes a tire (200, 210a, 210b), front wheel / rear wheel shaft (400, 410), and CCD camera (300, 310) do.
First, the tire 200 of the present invention shown in FIG. 3 paints a color 210 on a bead portion of a tire in order to measure wheel alignment of the tire while driving, and a plurality of circular patterns in the painted area 210. Manufactured by marking 220). At this time, the plurality of circular patterns 220 are arranged in a circular shape corresponding to the shape of the tire. The tire 200 may be divided into a front wheel tire 210a disposed on the front wheel shaft and a rear wheel tire 210b disposed on the rear wheel shaft, as shown in FIG. 2.
Next, the front / rear shafts 400 and 410 of the present invention have the tires 210a and 210b with the circular pattern and the painted area engraved on the front wheel tire 210a and the rear wheel tire 210b, respectively. The role of mounting.
Finally, the CCD cameras 300 and 310 of the present invention are installed at an intermediate point between the front wheel 400 and the rear wheel shaft 410 to measure the wheel alignment that changes during driving toward the tire. By measuring the degree of change in the shape and size of the circular pattern indicated by the interval, and converting the degree of change in size to an angle, it is possible to measure the wheel alignment changes during driving.
In the following Figure 4 will be described in more detail with respect to the wheel alignment measurement.
4 is a view for explaining the principle for measuring the camber angle and toe angle of the wheel alignment in the CCD camera according to an embodiment of the present invention.
As shown in FIG. 4, the CCD cameras 300 and 310 of the present invention acquire a tire shape when the tire 200 is photographed while driving, wherein the tire 200 is axially rotated by the traveling speed. You will have an elliptical image at right angles to the direction. Accordingly, the CCD cameras 300 and 310 of the present invention acquire the upper image of the smaller circular pattern and the lower image of the larger circular pattern among the images of the measured tire 200 while driving, thereby the upper image and the lower image. By comparing the degree of change in relative size according to the shape of the image and converting it to an angle, it is possible to measure the camber angle of the wheel alignment.
In addition, the CCD cameras 300 and 310 of the present invention compare the relative size change of the left and right images of tire images measured similarly to the camber angle measuring principle, and convert the angles into angles to adjust the toe angle of the wheel alignment. You can measure it.
As described above, the wheel alignment measuring apparatus of the present invention measures the dynamic wheel alignment of the vehicle with almost no constraints according to the vehicle type, vehicle type, and traffic regulations, compared to the conventional mounting of the marking jig on the vehicle wheel. More accurate tire agate performance can be predicted.
1 is a view showing a conventional wheel alignment measuring device.
2 and 3 are views illustrating a wheel alignment measuring device according to an embodiment of the present invention by way of example.
4 is a view for explaining the principle for measuring the camber angle and toe angle of the wheel alignment in the CCD camera according to an embodiment of the present invention.
<Explanation of symbols for the main parts of the drawings>
10: wheel alignment measuring device 200: tire
300, 310: CCD camera 400: front wheel shaft
410 rear wheel shaft

Claims (3)

  1. A tire manufactured by coloring a bead portion of a tire to measure wheel alignment of a tire while driving and displaying a plurality of circular patterns in a circular form in the painted area,
    A front wheel / rear wheel shaft for attaching the tire with the circular pattern and the painted area of the tire inward, and
    CCD camera installed at an intermediate point between the front wheel and the rear wheel shaft to measure the wheel alignment that changes during driving toward the tire.
    Dynamic wheel alignment measurement device comprising a.
  2. The method of claim 1,
    The CCD camera,
    The wheel alignment measurement is to measure the camber angle of the wheel alignment by comparing the relative size change between the top image and the bottom image after acquiring the top image of the smaller circular pattern and the bottom image of the larger circular pattern among the measured tire images. Device.
  3. The method of claim 1,
    The CCD camera,
    The wheel alignment measuring device for measuring the toe angle of the wheel alignment by comparing the relative size change of the left and right image of the measured tire image.
KR1020090108128A 2009-11-10 2009-11-10 Measurging apparatus for dynamic wheel alignment KR101091032B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090108128A KR101091032B1 (en) 2009-11-10 2009-11-10 Measurging apparatus for dynamic wheel alignment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090108128A KR101091032B1 (en) 2009-11-10 2009-11-10 Measurging apparatus for dynamic wheel alignment

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KR20110051512A true KR20110051512A (en) 2011-05-18
KR101091032B1 KR101091032B1 (en) 2011-12-09

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620944A (en) * 2012-04-17 2012-08-01 吉林大学 Six-post type three-dimensional visual detection system for automobile wheel alignment parameters
CN102735457A (en) * 2012-07-06 2012-10-17 烟台高易电子科技有限公司 3D (three-dimensional) four-wheel position finder and measuring method thereof
CN102735456A (en) * 2012-07-05 2012-10-17 烟台高易电子科技有限公司 Small target 3D (three-dimensional) automobile four-wheel position finder
US9475351B2 (en) 2013-12-03 2016-10-25 Hyundai Motor Company Intelligent tire system
CN111678462A (en) * 2020-05-26 2020-09-18 深圳市圳天元科技开发有限责任公司 Four-wheel positioning system, four-wheel positioning method and computer readable storage medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275753B1 (en) * 2000-02-15 2001-08-14 Meritor Heavy Vehicle Systems, Llc Method and system for detecting and adjusting wheel misalignment of a vehicle
JP2006138764A (en) 2004-11-12 2006-06-01 Toyota Motor Corp Apparatus and method for monitoring wheel condition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620944A (en) * 2012-04-17 2012-08-01 吉林大学 Six-post type three-dimensional visual detection system for automobile wheel alignment parameters
CN102735456A (en) * 2012-07-05 2012-10-17 烟台高易电子科技有限公司 Small target 3D (three-dimensional) automobile four-wheel position finder
CN102735457A (en) * 2012-07-06 2012-10-17 烟台高易电子科技有限公司 3D (three-dimensional) four-wheel position finder and measuring method thereof
US9475351B2 (en) 2013-12-03 2016-10-25 Hyundai Motor Company Intelligent tire system
CN111678462A (en) * 2020-05-26 2020-09-18 深圳市圳天元科技开发有限责任公司 Four-wheel positioning system, four-wheel positioning method and computer readable storage medium

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