Underground uninterrupted emergency illumination and safety indication system for coal mine

Abstract

The invention discloses an underground uninterrupted emergency illumination and safety indication system for a coal mine. The underground uninterrupted emergency illumination and safety indication system comprises a switching mode power supply (1), a charger (2), a battery management unit (3), a power supply control unit (4), a storage battery pack (5) and a load (6), wherein the switching mode power supply (1) is electrically connected with a mining alternating-current power supply and used for converting alternating-current power from the mining alternating-current power supply into low-voltage direct-current power; the charger (2) is used for charging the storage battery pack (5) through the battery management unit (3); the battery management unit (3) is used for acquiring the signals of the voltages of unit batteries of the storage battery pack (5), the temperatures of the unit batteries of the storage battery pack (5), the voltage of the storage battery pack (5), the charging current, the discharging current and / or the capacity of the storage battery pack (5), and when the signals become abnormal, the battery management unit (3) gives an alarm and protects the storage battery pack (5); and the power supply control unit (4) is used for charging the load (6) by using the switching mode power supply (1) or the storage battery pack (5). When the mining alternating-current power supply is in failure, the response time of the system for emergency uninterrupted emergency illumination is 30 ms-1 s.

Description

technical field [0001] The invention relates to the field of electrical equipment used in mines, in particular to an uninterrupted emergency lighting and safety indication system for underground coal mines. Background technique [0002] In the prior art, the lighting lamps used in underground coal mines are usually LED lamps powered by AC 127V. This lighting lamp consumes a lot of power, has a short service life, and has a high power supply voltage, so it is very unsafe to use in underground coal mines. Most of the safety indication signs used in coal mines are to use safety signs written on the roadway wall and metal signs to indicate, and the indication effect is not good. When an emergency occurs, coal mines usually lose power, and LED lights and safety signs will not work properly. This will hinder the rapid evacuation and evacuation of the miners in the coal mine, and cause a great threat to the life safety of the miners. [0003] At present, there is a great need for...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the lighting lamps used in coal mines are usually LED lamps powered by AC 127V. This kind of lighting lamps consumes a lot of power, has a short service life, and has a high power supply voltage, so it is very unsafe to use in underground coal mines.

The safety indication signs used in coal mines are mostly used to write safety signs on the roadway wall and use metal signs to indicate, and the indication effect is not good

When an emergency occurs, the coal mine will usually lose power, and the LED lights and safety signs will not work properly

This will hinder the rapid evacuation and evacuation of the miners in the coal mine, posing a great threat to the life safety of the miners

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