Signal acquisition device special for rail transit

Abstract

The invention belongs to the technical field of video acquisition, and particularly relates to a special signal acquisition device for rail transit. The special signal acquisition device comprises a square tube, a guide rail and a limiting plate, wherein the guide rail is arranged at the bottom of the square tube and is not directly connected with the square tube, and the left side of the limiting plate is fixedly connected with the square tube and the guide rail respectively. According to the invention, the guide rail and a sliding mechanism are cooperated for use, and the sliding mechanism slides along the guide rail and drives a video acquisition camera at the bottom to move at the same time, so compared with the prior art, the above mode can replace a fixedly-installed camera to perform video image acquisition, the cameras move in the opposite directions, and dead-corner-free observation of the whole carriage can be performed; and a controller sets a stepping motor to rotate at a slow speed and controls rail wheels to transversely and repeatedly move on the inner side of the guide rail, so compared with the mode that cameras are installed at the joints of carriages, the number of needed cameras can be reduced in the invention, images needing to be analyzed are reduced, and cost is effectively saved.

Description

technical field [0001] The invention relates to the technical field of video acquisition, in particular to a special signal acquisition device for rail transit. Background technique [0002] Rail transit refers to a type of vehicle or transportation system that operating vehicles need to run on a specific track. The most typical rail transit is a railway system composed of traditional trains and standard railways. With the diversified development of trains and railway technologies, There are more and more types of rail transportation, not only in long-distance land transportation, but also in short- and medium-distance urban public transportation. Common rail transportation includes traditional railways, subways, light rails and trams, and new Rail transit includes maglev rail system, monorail system, and automatic passenger rapid transit system. Among them, in recent years, in order to ensure the safety of passengers and property, cameras have gradually been installed in hi...

AI Technical Summary

Problems solved by technology

[0003] Image acquisition cameras can be used to monitor the interior of the carriages. The existing high-speed rail cameras used to collect video image information are often only installed with two to two Four, generally installed at the junction of the carriage, because the number is small and the location is fixed, so it is difficult to collect surveillance video from all positions in the carriage, and there are many monitoring dead spots, which may appear to be impossible to observe when calling , and the recognized face is blurred due to the distance, which is not conducive to recognition

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