Monitoring system for train running safety

Abstract

The invention relates to a safe monitoring system for train running comprises an inner monitoring system of a train carriage, and a ground, wherein, the inner monitoring system of a train carriage is divided into a passenger carrying carriage, a control carriage and a carriage outside; and the ground information monitoring system on the ground is divided into a total station, a substation and a public security department. A coaxial cable is used as a main trunk circuit. The safe monitoring system for train running, an environmental detector, a camera, a monitoring head, a control module of light introducing quantity, and an emergency communication module are connected in series in a video multiplexing mode. In addition, information transferred by trains and the ground uses an h.264 or D1 compression form.

Description

Technical field [0001] The train operation safety monitoring system of the present invention relates to the electronic technology field of the security and information industry, and particularly relates to the equipment of the train operation safety monitoring system. Background technique [0002] As an important part of urban public transportation, the safety of trains has attracted more and more attention from various countries. However, due to the uniqueness of the train compartment and the particularity of its functional positioning, so far no matter the United States, the United Kingdom, Singapore, and China have In the trial stage, no country has claimed to have completely solved the problem of train monitoring; although there are a few companies in the name of foreign companies to understand and design train monitoring systems with static and general security concepts on the ground. Doing so led to errors in the early stages of the design. [0003] A simple comparison of t...

AI Technical Summary

Problems solved by technology

[0006] 1. The CIMA / GRPC and radio frequency wireless transmission methods in the above methods have basically been abolished in many tests. The main problem is the coverage of network signals on the one hand, and the cost and signal bandwidth. Therefore, it is no longer consider;

[0007] 2. The optical fiber and baseband transmission methods in the above methods are basically not feasible, and are also excluded due to the vibration of the train and maintenance needs;

[0008] At present, the remaining modes are the network mode and the video multiplexing mode. The difference between the two mainly lies in: the network mode adopts the network video server mode, that is to say, the camera signal is first converted into a digital signal through compression and encoding. According to the current processing From the perspective of the situation, the highest image resolution is in the D1 format, and if 16 images of this format are transmitted to the memory at the same time, the amount of data is too large, and even a 1000M network will be under great pressure; besides, the network The current technical state of the video server, the real-time performance of the image and the high-fidelity characteristics of the image are difficult to guarantee, and it is difficult to meet the technical characteristics that are very important for security; in the future, with the upgrade of the compression technology, if it needs to be replaced, it needs to be replaced. many hardware parts

At the same time, in the specific field test, it is found that the computer network data will have a lot of interference during the train operation, which will cause interference to the signal transmitted by the computer network, and the signal packet loss will be serious.

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