WO1991000982A3 - Laser-based wheel alignment system - Google Patents

Laser-based wheel alignment system Download PDF

Info

Publication number
WO1991000982A3
WO1991000982A3 PCT/US1990/003536 US9003536W WO9100982A3 WO 1991000982 A3 WO1991000982 A3 WO 1991000982A3 US 9003536 W US9003536 W US 9003536W WO 9100982 A3 WO9100982 A3 WO 9100982A3
Authority
WO
WIPO (PCT)
Prior art keywords
wheels
reflected
beams
mirrors
wheel
Prior art date
Application number
PCT/US1990/003536
Other languages
French (fr)
Other versions
WO1991000982A2 (en
Inventor
John M J Madey
Julius M J Madey
Original Assignee
Miradco
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miradco filed Critical Miradco
Priority to DE69015365T priority Critical patent/DE69015365T2/en
Priority to EP90911855A priority patent/EP0493393B1/en
Priority to CA002063383A priority patent/CA2063383C/en
Publication of WO1991000982A2 publication Critical patent/WO1991000982A2/en
Publication of WO1991000982A3 publication Critical patent/WO1991000982A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/275—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/28—Beam projector and related sensors, camera, inclinometer or other active sensing or projecting device
    • G01B2210/283—Beam projectors and related sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/30—Reference markings, reflector, scale or other passive device
    • G01B2210/303—Reference markings, reflector, scale or other passive device fixed to the ground or to the measuring station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/30—Reference markings, reflector, scale or other passive device
    • G01B2210/306—Mirror, prism or other reflector

Abstract

A device and method to align the wheels of motor vehicles. A beam of collimated light from a low power visible laser is split into two generally parallel beams by a partially transmitting mirror and a series of plane front surface mirrors positioned in front and along side the vehicle being serviced. The two beams are reflected from a set of plane mirrors attached to the rims of the wheels to be aligned. The vertical and horizontal angles of each of the wheel-mounted mirrors are set by calibrated lead-screws to cancel the angular displacement of the wheels expected when the wheels are properly aligned. The reflected beams are imaged through a large aperture beam combiner on a common viewing screen. Correct toe-in and camber settings are indicated when the laser beams reflected from the wheel-mounted mirrors overlap at the center of the viewing screen. The caster settings of the front wheels are measured by observing the angle at which the reflected spots travel across the screen when the steering wheel is turned the system can be used to align the front wheels only, or alternatively all four wheels simultaneously.
PCT/US1990/003536 1989-07-07 1990-06-21 Laser-based wheel alignment system WO1991000982A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69015365T DE69015365T2 (en) 1989-07-07 1990-06-21 LASER WHEEL ALIGNMENT SYSTEM.
EP90911855A EP0493393B1 (en) 1989-07-07 1990-06-21 Laser-based wheel alignment system
CA002063383A CA2063383C (en) 1989-07-07 1990-06-21 Laser-based wheel alignment system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/377,437 US5048954A (en) 1989-07-07 1989-07-07 Laser-based wheel alignment system
US377,437 1989-07-07

Publications (2)

Publication Number Publication Date
WO1991000982A2 WO1991000982A2 (en) 1991-01-24
WO1991000982A3 true WO1991000982A3 (en) 1993-02-18

Family

ID=23489111

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/003536 WO1991000982A2 (en) 1989-07-07 1990-06-21 Laser-based wheel alignment system

Country Status (6)

Country Link
US (2) US5048954A (en)
EP (1) EP0493393B1 (en)
JP (1) JPH05503769A (en)
CA (1) CA2063383C (en)
DE (1) DE69015365T2 (en)
WO (1) WO1991000982A2 (en)

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AU2019263751A1 (en) 2018-04-30 2020-12-17 BPG Sales and Technology Investments, LLC Vehicular alignment for sensor calibration
US11243074B2 (en) 2018-04-30 2022-02-08 BPG Sales and Technology Investments, LLC Vehicle alignment and sensor calibration system
US11781860B2 (en) 2018-04-30 2023-10-10 BPG Sales and Technology Investments, LLC Mobile vehicular alignment for sensor calibration
US11597091B2 (en) 2018-04-30 2023-03-07 BPG Sales and Technology Investments, LLC Robotic target alignment for vehicle sensor calibration
US11835646B2 (en) 2018-04-30 2023-12-05 BPG Sales and Technology Investments, LLC Target alignment for vehicle sensor calibration
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CN112361968B (en) * 2020-11-17 2021-09-28 奇瑞汽车股份有限公司 Vehicle wheel center measuring device and measuring method
CN114061456B (en) * 2021-11-17 2023-08-25 业成科技（成都）有限公司 Size detection device
CN114323582A (en) * 2021-12-22 2022-04-12 光皓光学(江苏)有限公司 Wavefront test method and device with platform lens
CN114485393B (en) * 2021-12-30 2024-03-12 歌尔光学科技有限公司 Picture card tool and calibration method
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Also Published As

Publication number Publication date
EP0493393A4 (en) 1993-06-09
JPH05503769A (en) 1993-06-17
DE69015365T2 (en) 1995-08-03
WO1991000982A2 (en) 1991-01-24
CA2063383C (en) 2000-10-03
DE69015365D1 (en) 1995-02-02
US5048954A (en) 1991-09-17
US5425523A (en) 1995-06-20
EP0493393B1 (en) 1994-12-21
CA2063383A1 (en) 1991-01-08
EP0493393A1 (en) 1992-07-08

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