Composite-detection-based detection system and detection method for foreign matter between train door and platform shield gate

Abstract

The invention discloses a composite-detection base detection system for a foreign matter between a train door and a platform shield gate and a detection method for the detection system. The system comprises a photographic part, a laser scanning part and a processor, wherein the photographic part and the laser scanning part are arranged above the platform shield gate, and are in signal connection with the processor respectively. According to the system and the method, the laser scanning part and the photographic part are integrated for the composite detection of the foreign matter between the train door and the platform shield gate, and the detection data of the laser scanning part and the photographic part is integrated, so that the shortcomings of a single detection method are overcome, the detection rate is high, the false detection rate is low, and the reliability of the system and the riding safety of passengers are improved.

Description

technical field [0001] The invention relates to safety protection equipment for train screen doors, belonging to the technical field of subway train safety operation equipment, in particular to a foreign object detection system and detection method between train doors and platform screen doors based on composite detection. Background technique [0002] Since the subway began to use the screen door, the safety of the subway train when entering and leaving the station has been greatly improved, but the safety problems caused by the inclusion of people and objects between the platform screen door and the subway door have also appeared thereupon. In 2007, there was even a serious accident in which a passenger was squeezed to death by a moving train because passengers were caught between the train door and the screen door in the Shanghai subway. Therefore, in order to prevent similar accidents from happening again, it is imperative to develop and use a detection device that detec...

AI Technical Summary

Problems solved by technology

The main problem of this solution is that it may cause clamping damage to the human body, and it may also cause intrusion into the train operating boundary, and it may not be able to detect small objects such as children, which has great defects.

[0008] The photoelectric detection method uses ordinary light or laser sensors for detection, including two schemes, one of which is to add an elevator curtain-type infrared light detection device on the closing surface of the shielding door to detect whether there is any surface on the plane where the shielding door is located. Foreign objects exist, but this solution cannot detect pedestrians and foreign objects that have entered between the shielded door and the car door; the other is to install a laser ranging sensor on the top of the car door, and the measured distance will change when there are foreign objects in the detection area. The size is inversely proportional to the measured distance, and a foreign object alarm will be triggered when the detection standard is reached

The disadvantage of this solution is that the retroreflection ability of laser light varies greatly from materials with different colors and surface finishes. When the material is too weak for laser retroreflection or the volume of foreign objects is too small, it will cause the laser sensor to miss detection and make the system fail

However, since the ground between the train door and the platform screen door is the passenger passage area, it is often trampled on, which is easy to leave stains and cause changes in the reference pattern, resulting in misjudgment of image-based detection, resulting in a high probability of false alarms in the system and affecting the usability of the system

Images