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1491results about "Railway signalling and safety" patented technology

Train loading state high-definition monitoring and overloading detection method

The invention relates to a train loading state high-definition monitoring and overloading detection method. The method comprises the following steps that a high-definition camera set is used for carrying out real-time monitoring, when the arrival of a train is sensed, the system automatically starts a video system, a linear array CCD (charge-coupled device) camera carries out real-time scanning, an overloading object is analyzed and alarmed, a binocular visual three-dimensional measuring camera is triggered to carry out binocular visual analysis on obtained train images, feature extraction, image matching and train limit contour comparison, then the overloading size and overloading class are obtained, meanwhile, an image analysis technique is adopted to intelligently identify the opening and closing of a box card door, the damage of a canvas and the deviation of cargos, and the abnormal conditions are alarmed and are stored into high-definition pictures. The method has the advantage that the train is monitored by the high-definition videos in the real-time way, the linear array CCD camera is combined to carry out scanning and detection, and the train contour is measured by the binocular visual three-dimensional measuring camera in the three-dimensional way, so the three-dimensional coordinates of the overloading object are obtained, the real-time overloading alarming is realized, and the overloading data and overloading class with accuracy reaching millimeter level can be accurately measured.
Owner:武汉翔翼科技有限公司

Foreign matter invading detecting method and foreign matter invading detecting device

The invention provides a foreign matter invading detecting method and a foreign matter invading detecting device. The foreign matter invading detecting method comprises the following steps that infrared images within the monitoring scope are acquired by utilizing an infrared camera and are transmitted to an image collecting and processing system; whether a suspected foreign matter appears in the monitoring scope or not is determined by the image collecting and processing system according to the infrared images; when the suspected foreign matter appears, the laser light source and a visible light camera are focused on the suspected foreign matter within the monitoring scope, and filling light of laser light is conducted on the suspected foreign matter by utilizing the laser light resource; visible light images of the suspected foreign matter are acquired and transmitted to the image collecting and processing system; image registration and image fusion are conducted on the visible light images and images of the suspected foreign matter area in the infrared images by the image collecting and processing system; and information of the suspected foreign matter is provided by utilizing the fused images, and feature extraction and classification are conducted on the suspected foreign matter by utilizing the information of the suspected foreign matter, automatic identification and alarming for the suspected foreign matter are realized, and abundant and complete image information can be acquired in the time of dark light, dark skies and low visibility.
Owner:BEIJING JIAOTONG UNIV

Train tracking and approaching pre-warning system

ActiveCN102923167AEnhance driving safety assurance capabilitiesAvoid safety accidentsRailway signalling and safetyTimestampWheel speed sensor
The invention provides a train tracking and approaching pre-warning system. The security states of trains running in the same line and the same direction are subjected to real-time efficient calculation and estimation by adopting train locating information and safety pre-warning logic according to the advantages of a plurality of information wireless transmission modes. Thus, reasonable, accurate and efficient safety pre-warning is provided for possibly appearing dangerous situations and the potential safety hazard caused by signal system failure in tracking operation of the train. Train locating is achieved by a differential satellite navigation locating receiver in combination with a wheel speed sensor by the train tracking and approaching pre-warning system; the position information of each train is transmitted by a wireless communication network between the train and the ground; the position information of each train comprises train running kilometer post, speed, direction, line number, timestamp and the like; and a ground train position controller is used for carrying out comprehensive detection and processing on the position information of each train in the obtained prefecture, carrying out position judgment logic calculation and dynamic distance calculation of front and back trains, and transmitting the pre-warning information to the back train through the wireless information transmission network when the distance between the front train and the rear train is smaller than each of different levels of safety pre-warning thresholds.
Owner:BEIJING JIAOTONG UNIV
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