公开(公告)号：US10222455B1

公开(公告)日：2019-03-05

申请号：US14845053

申请日：2015-09-03

Applicant: Hunter Engineering Company

Inventor： Michael T. Stieff ,  Timothy A. Strege ,  Daniel R. Dorrance

IPC: G01C3/08 ,  G01S7/48 ,  G01S17/08 ,  G01M17/007

Abstract: A vehicle measurement station utilizing one or more displacement sensors disposed on each opposite side of an inspection region of a vehicle inspection lane to acquire displacement measurement data along associated measurement axes. At least a portion of the displacement measurement data is associated with the outermost wheel assemblies on an axle of a moving vehicle passing through the inspection region, and utilized to determine one or more vehicle characteristics, such as an axle total toe condition.

公开(公告)号：US09665793B2

公开(公告)日：2017-05-30

申请号：US14209552

申请日：2014-03-13

Applicant: Hunter Engineering Company

Inventor： Daniel R. Dorrance ,  Mark S. Shylanski

IPC: G06T7/00 ,  G06T7/20 ,  G06K9/60 ,  G01B11/275 ,  G06T7/73

CPC classification number: G06K9/60 ,  G01B11/2755 ,  G01B2210/20 ,  G01B2210/286 ,  G06T7/73 ,  G06T2200/04 ,  G06T2207/10016 ,  G06T2207/10028 ,  G06T2207/20221

Abstract: A method for contactless measurements of a vehicle wheel assembly by acquiring a sequence of images as the vehicle wheel assembly moves within a projected pattern of light. Images of the vehicle wheel assembly are acquired and processed to identify the portions of the images corresponding to the wheel assembly, such as by recognition of the wheel rim edge. The identified portion of each image is cropped and a resulting point cloud of data rotational aligned by an optimization procedure to remove the effect of wheel translation and rotation between each image, as well as to identify a center of rotation and amount of rotation for each image which yields a best-fit result. Superimposing the resulting point clouds produces a generated image with a high density of data points on the optimally fit surfaces of the wheel assembly, which can be used to further refine the axis of rotation determination.

公开(公告)号：US20160273914A1

公开(公告)日：2016-09-22

申请号：US15068299

申请日：2016-03-11

Applicant: Hunter Engineering Company

Inventor： Timothy A. Strege ,  Daniel R. Dorrance

IPC: G01B11/275

CPC classification number: G01B11/2755 ,  G01B2210/20

Abstract: A method for detecting the occurrence of deviations from level, straight-line rolling movement of a wheel assembly across a supporting surface during a rolling compensation procedure associated with a vehicle wheel alignment measurement or inspection system by identifying changes in measurements or calculated parameters associated with the wheel assembly which would be unchanged during an ideal level and straight-line rolling movement. Identified changes in the measurements or calculated parameters are evaluated to either warn an operator of the occurrence of a deviation, or to generate a correction factor to account for at least a portion of an effect which the deviations introduce into compensation calculations or subsequent wheel alignment measurements or service procedures.

Abstract translation: 一种用于检测在与车轮对准测量或检查系统相关联的滚动补偿过程期间车轮组件跨支撑表面的水平，直线滚动运动的偏差的发生的方法，其通过识别测量结果的变化或与 在理想水平和直线滚动运动期间将不变的轮组件。 评估测量或计算参数中的识别的变化，以向操作者发出偏差的发生，或者产生校正因子以考虑偏差引入到补偿计算或随后的车轮对准测量中的至少一部分效果 或服务程序。

公开(公告)号：US20130176428A1

公开(公告)日：2013-07-11

申请号：US13781977

申请日：2013-03-01

Applicant: Hunter Engineering Company

Inventor： Michael T. Stieff ,  Daniel R. Dorrance ,  Thomas J. Golab ,  Mark S. Shylanski

IPC: G01B11/275

CPC classification number: H04N7/18 ,  B60R11/04 ,  G01B11/275 ,  G01B11/2755 ,  G01B2210/12 ,  G01B2210/14 ,  G01B2210/30

Abstract: A machine vision vehicle wheel alignment system for acquiring measurements associated with a vehicle. The system includes at least one imaging sensor having a field of view and at least one optical target secured to a wheel assembly on a vehicle within the field of view of the imaging sensor. The optical target includes a plurality of visible target elements disposed on at least two surfaces in a determinable geometric and spatial configuration which are calibrated prior to use. A processing unit in the system is configured to receive at least two sets of image data from the imaging sensor, with each set of image data acquired at a different rotational position of the wheel assembly around an axis of rotation and representative of at least one visible target element on each of the two surfaces, from which the processing unit is configured to identify said axis of rotation of the wheel assembly.

Abstract translation: 一种用于获取与车辆相关联的测量的机器视觉车轮对准系统。 该系统包括至少一个具有视野的成像传感器和在成像传感器的视场内固定到车辆上的车轮组件的至少一个光学目标。 光学目标包括以可确定的几何和空间配置布置在至少两个表面上的多个可见目标元件，其在使用之前被校准。 系统中的处理单元被配置为从成像传感器接收至少两组图像数据，其中每组图像数据在轮组件的不同旋转位置周围围绕旋转轴线获取，并且代表至少一个可见光 目标元件在两个表面中的每一个上，处理单元从该目标元件构造成识别车轮组件的所述旋转轴线。