Shield door obstacle secondary detection device and method for rail traffic

Abstract

The invention relates to the technical field of rail traffic equipment, and discloses a shield door obstacle secondary detection device for rail traffic. The shield door obstacle secondary detection device comprises a left door plate and a right door plate; adhesive strips are arranged on the opposite side faces of the left door plate and the right door plate correspondingly; the bottom end of oneside of the left door plate is fixedly connected with a base, and the side, opposite to the left door plate, of the right door plate is provided with a reserved groove; and the width of the reservedgroove is matched with the width of the base. By arranging a light beam generator and a photoresistor, thus when the left door plate and the right door plate operate to a to-be-closed state, obstacledetection is completed through the light beam generator and the photoresistor, traditional small obstacle pressure detection is converted into small obstacle shading detection, thus finding of the equilibrium point between the expected motor current accuracy of a door speed curve and the correction function of a DCU for the voltage in a door speed change detection method is omitted, meanwhile, anobstacle detection effect on soft objects is achieved, and the potential safety hazard that in the operating process of an existing shield door, the soft objects such as clothing are clamped is eliminated.

Description

technical field [0001] The invention relates to the technical field of rail transit equipment, in particular to a secondary detection device for barriers of screen doors used in rail transit. Background technique [0002] The screen door is mostly used on the rail transit platform to isolate the platform area from the track area. Its main function is to prevent accidents caused by people falling off the track, reduce the energy consumption of the station's air conditioning and ventilation system, and improve the platform waiting environment. [0003] The obstacle detection system is the key technology for screen doors to ensure the safety of passengers. It has anti-pinch function. The existing technology uses the comparison of the expected motor current and the measured motor current in the door speed curve, that is, a single controller inside the door control unit DCU uses The standard motor current is used to calculate the pressure that the obstacle exerts on the door. Th...

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Problems solved by technology

[0005] In view of the deficiencies in the use of the existing screen door obstacle detection system proposed in the background technology, the present invention provides a secondary screen door obstacle detection device for rail transit, which has the ability to make up for the accuracy defects of the traditional obstacle detection system , more accurate detection of small obstacles and soft objects, and solves the problem of accuracy defects in the detection of obstacles caused by door speed changes in the above-mentioned background technology

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