Passive video monitoring system for mine field

Abstract

The invention discloses a passive video monitoring system suitable for an underground mine field. The system comprises a main control end and a video monitoring end, and is characterized in that a constant-voltage feeding mode is adopted in the system; a video monitoring module of the video monitoring end in a normal state is in a dormant state; during the special situations of increase in the gas concentration and the like in the mine field, the video monitoring module can automatically start monitoring work and sound an alarm to the main control end, so that working personnel at the main control end can check the situation of the mine field and make the responses of prompt, evacuation, rescue and the like. The passive video monitoring system has the beneficial effects that power is supplied in a centralized way in the system through the main control end, so that a circuit is simplified, and convenience is brought to wiring; power is supplied in the system in a low-voltage constant-voltage feeding mode, so that the circuit risk is lowered; monitoring equipment at the monitoring end can automatically switch working modes, so that the aims of saving energy and saving power are fulfilled.

Description

technical field [0001] The invention belongs to a monitoring system for remote power feeding and sending control signaling, in particular to a passive video monitoring system suitable for mine environment. Background technique [0002] In recent years, the production safety of my country's coal mining enterprises is very worrying. Mine explosion incidents are often reported, and major and extraordinarily serious accidents occur frequently, causing great losses of national property and people's lives, and at the same time have a bad social impact. Analyzing several recent mine accidents, we found that the main reasons for heavy casualties and rescue difficulties are as follows: [0003] 1. The information communication between the ground staff and the underground staff is not timely; [0004] 2. The ground staff cannot timely grasp the operation progress and distribution location of the underground personnel; [0005] 3. When a coal mine accident occurs, the search efficien...

AI Technical Summary

Problems solved by technology

[0003] 1. The information communication between the ground staff and the underground staff is not timely;

[0004] 2. The ground staff cannot timely grasp the operation progress and distribution location of the underground personnel;

[0005] 3. When a coal mine accident occurs, the search efficiency is low and the rescue effect is poor

Because the analog video signal is prone to attenuation, distortion and delay, and is susceptible to interference from various underground equipment, the image quality is degraded; in addition, the transmission of video signals is very sensitive to distance, and it is not convenient for system maintenance when the transmission distance is greater than several hundred meters and upgrade

[0008] In addition, the mine work is not always carried out. When it is necessary to switch the monitoring working state, it is very inconvenient to manually start or close the switch.

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