Roadway wireless video communication base station

Abstract

A roadway wireless video communication base station relates to a roadway wireless video communication base suitable for underground and solves the problems that a communication line in a mining area is worn, smashed and broken and is hard to recover, and a video signal for communication transmission is interrupted due to slope changing points and roadway corners. The base station comprises a receiver (1), a changeover switch (2) and a transmitter (3), wherein the receiver comprises a receiving antenna (11), a high-frequency amplifier (12), a frequency mixer (13), a middle-frequency amplifier (14), a broadband frequency discriminator (15) and a video amplifier (16); the changeover switch (2) has two connecting modes, wherein one connecting mode is that the changeover switch (2) is connected to an A position to communicate the input end of the transmitter (3); and the other connecting mode is that the changeover switch (2) is connected to a B position to communicate an audio/video interface (22); the transmitter (3) comprises a video amplifier (31), a voltage controlled amplifier (32), a power amplifier (33) and a transmitting antenna (34); and a ground dispatching center can monitor the position and the environmental parameter (gas) change of mining and digging machinery in the mining area through a video on a real-time basis so as to keep continuous and smooth video communication line.

Description

technical field [0001] The invention is a wireless video communication base station suitable for underground roadways, which solves the problem of interruption of video signals for communication transmission caused by wear, smashing, smashing, difficulty in recovery, roadway slope points, and roadway turning in mining areas. The dispatching center can monitor the position of mining and excavating machinery and the changes of environmental parameters (gas) in real-time video monitoring, and keep the video communication line unimpeded, which belongs to the technical field of mine information monitoring device manufacturing. Background technique [0002] The problems existing in the existing technology are: at present, the domestic underground mining roadway communication mostly adopts wired transmission; such as the telephone communication between the mining area and the ground dispatching center, and the mining area environmental gas parameter data acquisition and monitoring s...

AI Technical Summary

Problems solved by technology

[0002] The problems existing in the existing technology are: at present, the domestic underground mining roadway communication mostly adopts wired transmission; such as the telephone communication between the mining area and the ground dispatching center, and the mining area environmental gas parameter data acquisition and monitoring system, etc.

In order to solve the problem, we adopt the wireless microwave video communication method in the tunnel roadway. Since the tunnel roadway is the only way for the transportation roadway to the mining face, the road surface becomes lame and turns, resulting in poor microwave visibility. Therefore, it is necessary to set up a wireless turning video communication repeater to solve the video communication problem caused by signal attenuation at the turning and undulating places of the roadway.

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