Automatic monitoring system for coal mine drainage

The utility model relates to the technical field of coal mine drainage, and provides an automatic monitoring system for coal mine drainage, which comprises a water level monitoring circuit, the water level monitoring circuit comprises a first electrode A1, a second electrode A2, an operational ampli...

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Bibliographische Detailangaben
Hauptverfasser:	LI FENG, ZHUANG WEI, MEN CHANGBO, LIU HONGLIANG, LI ZUHUI, ZHAO LIN, LIU CHUANSHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to the technical field of coal mine drainage, and provides an automatic monitoring system for coal mine drainage, which comprises a water level monitoring circuit, the water level monitoring circuit comprises a first electrode A1, a second electrode A2, an operational amplifier U3, an OR gate U17, a NOT gate U1, an OR gate U7 and a trigger U2, the first end of the first electrode A1 is connected with the non-inverting input end of the operational amplifier U3, and the second end of the second electrode A2 is connected with the non-inverting input end of the operational amplifier U3. The first end of the first electrode A1 is connected with the input end of the first electrode A1, the first end of the second electrode A2 is connected with the input end of the NOT gate U1, the second end of the first electrode A1 and the second end of the second electrode A2 are arranged at different height positions in a water well respectively, the output end of the operational amplifier U3 is connec