公开(公告)号：WO1996038004A1

公开(公告)日：1996-11-28

申请号：PCT/US1996006933

申请日：1996-05-15

Applicant: FORI AUTOMATION, INC.

Inventor： FORI AUTOMATION, INC. ,  BARTKO, Robert, J. ,  ROSEN, Jack, H.

IPC: H04N07/18

CPC classification number: H04N7/181 ,  G01B11/2755 ,  G01B2210/143 ,  G01B2210/146 ,  G01B2210/22 ,  G01B2210/286

Abstract: A sensor method and apparatus for an optical wheel alignment machine utilizes one or more light sources, such as lasers (12, 13, 14), to project a laser line or other shaped light onto various locations about the sidewall (32a) of a tire undergoing measurement. The sensor includes a video camera (18) or other light responsive receiver and an optical system (16) that combines the reflected laser lines into a single image that is received by the camera. The optical system also rotates one or more of the reflected laser lines so that all of the reflected portions have the same general orientation upon entering the camera. The camera outputs a video data stream that is indicative of the image. The sensor has an electronic circuit (20) that compares the incoming video data stream with a threshold to determine (88), on a pixel-by-pixel basis, whether any particular pixel lies on or outside one of the laser lines received by the camera. For a pixel lying on a laser line, the comparator interrupts (IRQ) operation of the microprocessor (80) which then determines the position within the image of that pixel and uses that information to generate the coordinate output data.

Abstract translation: 用于光学轮对准机的传感器方法和装置利用诸如激光器（12,13,14）之类的一个或多个光源将激光线或其它成形光投射到轮胎侧壁（32a）周围的各个位置上 正在测量。 传感器包括摄像机（18）或其他光响应接收器和将反射的激光线组合成由相机接收的单个图像的光学系统（16）。 光学系统还旋转一个或多个反射激光线，使得所有反射部分在进入相机时具有相同的总体取向。 相机输出指示图像的视频数据流。 传感器具有电子电路（20），其将输入的视频数据流与阈值进行比较，以逐像素地确定（88）是否存在任何特定像素位于由 相机。 对于位于激光线上的像素，比较器中断（IRQ）微处理器（80）的操作，微处理器（80）然后确定该像素的图像内的位置并使用该信息来生成坐标输出数据。