公开(公告)号：US20140267725A1

公开(公告)日：2014-09-18

申请号：US13796534

申请日：2013-03-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian Smith

IPC: H04N7/18

CPC classification number: H04N7/18 ,  G08G1/0175 ,  G08G1/054

Abstract: An average speed detection camera system. The system includes a first automatic license plate reader (ALPR) camera having an infrared camera for capturing identification information from a vehicle passing an entrance point. A first communication module is coupled to the first ALPR camera for transmitting the identification information and either an entrance timestamp or an exit timestamp for the vehicle. A second ALPR camera includes an infrared camera and an overview camera is coupled to a second communication module. The second communication module receives the vehicle identification information and the reference time stamp from the first communication module. The infrared camera of the second ALPR camera captures identification information from the vehicle as it passes the exit point, and if the time at which the vehicle passes an exit point is prior to an exit timestamp for the vehicle, the overview camera flash illuminates the vehicle with visible light and captures an image of the vehicle.

Abstract translation: 平均速度检测摄像机系统。 该系统包括具有用于从通过入口点的车辆捕获识别信息的红外摄像机的第一自动牌照读取器（ALPR）摄像机。 第一通信模块耦合到第一ALPR摄像机，用于发送车辆的识别信息和入口时间戳或出口时间戳。 第二ALPR相机包括红外相机，并且概览相机耦合到第二通信模块。 第二通信模块从第一通信模块接收车辆识别信息和参考时间戳。 第二ALPR摄像机的红外摄像机在通过出口点时从车辆捕获识别信息，并且如果车辆通过出口点的时间在车辆的出口时间戳之前，则概览照相机闪光灯照亮车辆 具有可见光并捕获车辆的图像。

公开(公告)号：US09641806B2

公开(公告)日：2017-05-02

申请号：US13796534

申请日：2013-03-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brian Smith

IPC: H04N7/18 ,  G08G1/054 ,  G08G1/017

CPC classification number: H04N7/18 ,  G08G1/0175 ,  G08G1/054

Abstract: An average speed detection system includes a first automatic license plate reader (ALPR) camera having an infrared camera for capturing identification information from a vehicle passing an entrance point. A first communication module is coupled to the first ALPR camera for transmitting the identification information and either an entrance timestamp or an exit timestamp for the vehicle. A second ALPR camera includes an infrared camera and an overview camera is coupled to a second communication module. The second communication module receives the vehicle identification information and the reference time stamp from the first communication module. The infrared camera of the second ALPR camera captures identification information from the vehicle as it passes the exit point, and if the time at which the vehicle passes an exit point is prior to an exit timestamp for the vehicle, the overview camera flash illuminates the vehicle and captures an image of the vehicle.