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2. 发明公开

EP0280941A1 Vehicle wheel alignment apparatus and method 失效
标题翻译： Vorrichtung und Verfahren zum Bestimmen der Lage vonFahrzeugrädern。
公开(公告)号：EP0280941A1
公开(公告)日：1988-09-07
申请号：EP88102006.9
申请日：1988-02-11
申请人： PERCEPTRON, INC.
发明人： Waldecker, Thomas John , Dewar, Robert , Wybo, David Robert , Woroniec, Richard
IPC分类号： G01B11/275
CPC分类号： G01B11/2755 , G01B2210/143 , G01B2210/146 , G01B2210/22 , G01B2210/26 , G01B2210/286 , Y10T29/53922
摘要： The invention suggests an apparatus and a method for aligning motor vehicle wheels which eliminates the need to attach an apparatus to the vehicle or to physically contact the wheel to be aligned. Noncontact sensors (36) project fanned or structured light onto a tire (12), while the wheel is rotated, to illuminate at least two contour lines (38) on the surface of the tire (12). The contour lines (38) are read by video cameras, positioned offset from the optical plane of the structured light, to allow triangulation in determining the spatial position of the contour lines (38). Radially equivalent points are selected from each contour line (38) by an algorithm which ignores the effects of any raised lettering on the tire sidewalls. Control of the video cameras and processing of the video data is performed by parallel processor-based computer system coordinated by sequencer circuit (Fig. 3).
摘要翻译：本发明提出了一种用于对准机动车辆车轮的装置和方法，其消除了将装置附接到车辆或物理接触要对准的车轮的需要。非接触传感器（36）在轮子旋转时将扇形或结构化的光投射到轮胎（12）上，以照亮轮胎（12）表面上的至少两个轮廓线（38）。轮廓线（38）由位于偏离结构光的光学平面的摄像机读取，以允许在确定轮廓线（38）的空间位置时进行三角测量。通过忽略轮胎侧壁上任何凸起字体的影响的算法从每个轮廓线（38）中选择径向等效点。视频摄像机的控制和视频数据的处理由基于并行处理器的计算机系统由定序器电路协调（图3）执行。

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