CN112031873B - A kind of gas monitoring equipment in coal mining area - Google Patents

Abstract

The invention discloses a gas monitoring device in a coal mine area, comprising a gas monitoring host, the gas monitoring host comprising a host processor, a wind speed sensor for monitoring wind speed information, a gas sensor for monitoring gas concentration information, a relay and a display screen; The sensor and the gas sensor are all electrically connected to the host processor and input the monitored data to the host processor for processing; the relay and the display screen are electrically connected to the host processor and controlled by the host processor; the host processor includes Wind speed processing module, gas processor module and logic circuit; the wind speed information processed by the wind speed processing module and the gas concentration information processed by the gas processing module are controlled by the output level signal of the logic circuit after the logic operation of the logic circuit The working state of the relay. The invention can carry out early warning and power outage of the dangerous situation in the coal mining area according to the ventilation environment.

Description

A kind of gas monitoring equipment in coal mining area

technical field

The invention belongs to the technical field of gas monitoring, in particular to a gas monitoring device in a coal mining area.

Background technique

The underground coal mining area is an area where gas disaster accidents occur frequently. With the continuous strengthening of the mining intensity and depth of underground coal mines in recent years, the high-risk accidents in mines have also continued to increase. How to warn and monitor the safety of coal mines has also become a major research in the work of mining safety. direction. In the prior art, it is a common phenomenon that a device for monitoring gas concentration is set at each certain point, and the gas concentration is monitored through the device, and the electrical equipment is powered off in time when the gas concentration is high. However, this method is only limited to monitoring the gas concentration. In most cases, when the ventilation environment in the coal mining area is abnormal, even if the current gas concentration is not too high, the gas concentration will rise rapidly due to poor ventilation. Power-off of electrical equipment by monitoring equipment has a time lag and the danger of missing the best time for escape.

For example, the published patent [Patent Application No.: 201410781626.0], the patent relates to a multi-parameter and multi-point monitoring device for coal mine gas disaster, which includes a gas pressure monitoring device, a borehole stress monitoring device, a gas concentration monitoring device, and several monitoring sub-systems. station, a monitoring sub-station and a ground terminal. The gas pressure monitoring device is arranged in the first borehole of one bank of the roadway, the borehole stress monitoring device is arranged in the second borehole of the other bank of the roadway, and the gas concentration monitoring device is suspended on the roof of the roadway; the gas pressure monitoring device The gas pressure signal is monitored in real time and sent to the first monitoring sub-station; the borehole stress monitoring device monitors the borehole stress signal in real time and sends it to the second monitoring sub-station; the gas concentration monitoring device monitors the gas concentration signal in the working space in real time, and Send to the third monitoring sub-station; the first, second, and third monitoring sub-stations respectively send monitoring signals to the monitoring sub-stations through wireless communication technology, and the monitoring sub-stations send all monitoring signals to the ground terminal through optical fibers.

The above patents do not propose how to perform early warning or power outage according to the ventilation environment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to address the above-mentioned problems, and to provide a gas monitoring device in a coal mining area that can perform early warning and power outage according to the ventilation environment.

The present invention is achieved through the following technical solutions: the present invention provides a gas monitoring device in a coal mining area, including a gas monitoring host, wherein the gas monitoring host includes a host processor, a wind speed sensor for monitoring wind speed information, and a gas monitoring host for monitoring gas. A gas sensor, relay and display screen for concentration information; the wind speed sensor and the gas sensor are all electrically connected to the host processor and input the monitored data information to the host processor for processing; the relay , The display screen is electrically connected with the host processor and controlled by the host processor; the relay controls the power-off/power-on status of each electrical equipment in the coal mine; the display screen displays the power in the coal mine wind speed information and gas concentration information; the host processor includes a wind speed processing module, a gas processor module and a logic circuit; the wind speed information processed by the wind speed processing module and the gas concentration information processed by the gas processing module are in After the logic operation of the logic circuit, the working state of the relay is controlled by the output level signal of the logic circuit.

Optionally, it also includes an aisle auxiliary fan, and the host processor further includes a comparator and an RS485 serial communication interface; each of the aisle auxiliary fans is electrically connected to one of the gas monitoring hosts and receives the gas. The monitoring host controls the work; the gas concentration information is exchanged between the two adjacent gas monitoring hosts through the RS485 serial communication interface; the gas concentration information of the two interactive locations passes through one of the gas monitoring hosts After processing by the internal comparator, the output level signal controls the operation of the aisle auxiliary fan electrically connected to the gas monitoring host.

Optionally, the gas monitoring host further includes a wind speed warning light, a normal wind speed green light, a gas warning light and a gas normal green light; the wind speed processing module converts the wind speed information whose wind speed is not less than the first wind speed value into a level signal control unit. The green light is on when the wind speed is normal, and the wind speed information with the wind speed less than the first wind speed value and not less than the second wind speed value is converted into a level signal to control the wind speed warning light to light up, and the wind speed information with the wind speed less than the second wind speed value is converted into electricity. The level signal is input to the logic circuit for operation to control the relay to cut off the power supply; the gas processing module converts the gas concentration information whose gas concentration is not greater than the first gas concentration value into a level signal to control the gas normal green light to turn on , convert the gas concentration information whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value into a level signal to control the gas warning light to light up, and convert the gas concentration information whose gas concentration is greater than the second gas concentration value into The level signal is input to the logic circuit for operation to control the relay to disconnect the power supply.

Optionally, the gas monitoring host further includes an alarm and a set-top auxiliary ventilation fan; both the alarm and the set-top auxiliary ventilation fan are electrically connected to the host processor; the host processor further includes a counter and a set-top auxiliary ventilation fan. D flip-flop; the logic circuit includes a first NAND gate circuit and a second NAND gate circuit; the input end of the counter is electrically connected to the gas processing module, and the input end of the D flip-flop is connected to the The output end of the counter is electrically connected, and the level signal whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value is output from the output of the D flip-flop; The level signal and the level signal whose gas concentration is greater than the second gas concentration value are both input to the two input terminals of the first NAND gate circuit; the output terminal of the D flip-flop is connected to the first NAND gate. The output terminals of the circuit are both input to the two input terminals of the second NAND gate circuit, and the output terminal of the second NAND gate circuit is electrically connected to the relay; the output terminal of the first NAND gate circuit controls the relay. The siren and the overhead auxiliary ventilation fan work.

Optionally, the comparator includes a subtractor and an N-channel MOS tube switch circuit; the subtractor includes two input terminals for inputting gas concentration level signals; the N-channel MOS tube switch circuit includes a band. an N-channel MOS transistor with a parasitic diode; the output end of the subtractor is electrically connected to the gate of the N-channel MOS transistor, and the drain of the N-channel MOS transistor is electrically connected to the DC power supply, and the The aisle auxiliary ventilation fan is electrically connected between the drain and the DC power supply, and the source of the N-channel MOS transistor is grounded.

Optionally, the subtractor includes an operational amplifier; the inverting input terminal of the operational amplifier is electrically connected to the first resistor, the non-inverting input terminal is electrically connected to the second resistor, and the output terminal is connected to the inverting input terminal. A feedback resistor is electrically connected, and a third resistor is electrically connected between the non-inverting input terminal and the ground.

Optionally, the gas monitoring host includes a body, the gas sensor and the wind speed sensor are both fixedly connected to the outer surface of the body; one side of the body is fixedly connected to a display panel, the wind speed is normal green light, the wind speed The warning light, the gas normal green light, the gas warning light, the alarm and the display screen are all arranged on the display panel and are fixedly connected with the display panel; one side of the body is fixedly connected with a number of relays ; One side of the body is provided with a door that is rotatably connected to the body, the interior of the body is provided with a processor chamber, and the door isolates the processor chamber and the external space; the host processor is provided with in the processor chamber; the set-top auxiliary ventilation fan is fixedly connected with the top surface of the body.

The beneficial effects of the present invention are:

1. The present invention is applicable to ventilation passages in coal mining areas. The coal mine area gas monitoring equipment of this embodiment is arranged at the ventilation passages, which can effectively ensure that in the case of excessive gas concentration or poor ventilation, the power will be cut off in time, and each power consumption will be controlled. The device stopped working. The invention can realize that when one of the ventilation and gas concentration is abnormal, the power is cut off in a timely and decisive manner, without the need for manual judgment or manual power cut.

2. The gas monitoring host of the present invention has a display screen, which can assist the staff to know the gas concentration and ventilation conditions at the location where the gas monitoring host is placed in time.

3. The present invention uses the interaction of gas concentration information between two adjacent gas monitoring hosts, so that once the gas concentration difference is greater than a certain value, the aisle auxiliary ventilation fan between the two gas monitoring hosts is turned on to assist in time. The air is circulated to avoid the safety hazard caused by the increasing gas concentration difference.

4. The gas monitoring host of the present invention also carries an auxiliary ventilation fan on the top of the machine, and when the current environment is abnormal, the forced auxiliary air flow is turned on in time.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of the outline structure of a gas monitoring host according to an embodiment of the present invention;

2 is a schematic structural diagram of the location of an internal processor of a gas monitoring host according to an embodiment of the present invention;

3 is a schematic diagram of a control system for gas monitoring equipment in a coal mining area according to an embodiment of the present invention;

4 is a schematic diagram of a comparator according to an embodiment of the present invention;

5 is a schematic diagram of the interaction of gas concentration information between two adjacent gas monitoring hosts according to an embodiment of the present invention;

100-display panel; 110-display; 121-wind speed normal green light; 122-wind speed warning light; 131-gas normal green light; 132-gas warning light; 140-alarm; 150-gas sensor; 160-wind speed sensor; 170 - Relay; 180 - Top Auxiliary Ventilation Fan; 190 - Gear Door; 200 - Host Processor; 400 - Processor Chamber; 300 - Body.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations shown in the accompanying drawings Or the positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Unless otherwise defined, technical or scientific terms used herein should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first", "second" and similar terms used in the description of the patent application and the claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Likewise, "a" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one.

The invention discloses a gas monitoring device in a coal mining area, which is used for placing in an underground ventilation channel in a coal mining area. When the local gas concentration in the ventilation channel area is uneven, the auxiliary ventilation fan in the aisle can be turned on in time to ensure that the gas concentration in the ventilation channel does not exceed the standard . Among them, the gas monitoring equipment in the coal mining area of this embodiment includes a gas monitoring host and an aisle auxiliary ventilation fan. Each aisle auxiliary ventilation fan corresponds to a gas monitoring host, and is controlled by the corresponding gas monitoring host. FIG. 1 and FIG. 2 are schematic diagrams of the mechanical structure of the gas monitoring host of the present embodiment.

As shown in FIG. 3 , the gas monitoring host includes a host processor 200 , a wind speed sensor 160 for monitoring wind speed information, a gas sensor 150 for monitoring gas concentration information, a relay 170 and a display screen 110 . Both the wind speed sensor 160 and the gas sensor 150 are electrically connected to the host processor 200 and input the monitored data information to the host processor 200 for processing. The relay 170 and the display screen 110 are both electrically connected to the host processor 200 and controlled by the host processor 200 . The relay 170 is used to control the power off/on status of various electrical equipment in the coal mine; the display screen 110 is used to display the wind speed information and gas concentration information in the coal mine. The host processor 200 includes a wind speed processing module, a gas processing module and a logic circuit. After the wind speed information processed by the wind speed processing module and the gas concentration information processed by the gas processing module are logically operated by the logic circuit, the working state of the relay 170 is controlled by the output level signal of the logic circuit. That is, when the logic circuit outputs a high level, the contacts of the relay 170 are disconnected to stop the operation of the controlled electrical equipment; when the logic circuit outputs a low level, the contacts of the relay 170 are closed to make the controlled electrical equipment operate normally. .

Specifically, the gas monitoring equipment in the coal mining area of this embodiment further includes an aisle auxiliary fan, and the host processor 200 further includes a comparator and an RS485 serial communication interface. Each aisle auxiliary fan is electrically connected with a gas monitoring host and controlled by the gas monitoring host. Each gas monitoring host can monitor the gas concentration in the area where it is placed, and the gas concentration information can be exchanged between two adjacent gas monitoring hosts through the RS485 serial communication interface. After the gas concentration information of the two interactive locations is processed by a comparator inside one of the gas monitoring hosts, the output level signal controls the aisle auxiliary fan electrically connected to the gas monitoring host to work. As shown in Figure 5, an auxiliary aisle fan is set between the two gas monitoring hosts, and the gas concentration information is exchanged between the two gas monitoring hosts through the RS485 serial communication interface; for the convenience of description, Figure 5 The three gas monitoring hosts in the middle are named as the left gas monitoring host, the middle gas monitoring host and the right gas monitoring host; the gas concentration information exchanged between the left gas monitoring host and the middle gas monitoring host is compared and processed by the comparator of the middle gas monitoring host; The gas concentration information exchanged between the middle gas monitoring host and the right gas monitoring host is compared and processed by the comparator of the right gas monitoring host.

Specifically, the gas monitoring host further includes a wind speed warning light 122 , a normal wind speed green light 121 , a gas warning light 132 and a normal gas green light 131 . The wind speed processing module converts the wind speed information whose wind speed is not less than the first wind speed value into a level signal to control the normal wind speed and the green light 121 is turned on, and converts the wind speed information whose wind speed is less than the first wind speed value and not less than the second wind speed value into a level signal control The wind speed warning light 122 is turned on, and the wind speed information whose wind speed is less than the second wind speed value is converted into a level signal and input to the logic circuit for operation to control the relay 170 to cut off the power supply. For convenience of explanation, as shown in FIG. 3 , in this embodiment, the wind speed processing module is divided into a first wind speed processing output end F1 , a second wind speed processing output end F2 and a third wind speed processing output end F3 . In this implementation, after the wind speed signal is processed, the first wind speed processing output terminal F1 outputs a level signal whose wind speed is not less than the first wind speed value to control the wind speed to be normal. The output terminal F2 outputs a level signal whose wind speed is less than the first wind speed value and not less than the second wind speed value to control the wind speed warning light 122 to light up, which is used to warn that the current wind speed is small and needs to be vigilant but not dangerous; from the third wind speed The processing output terminal F3 outputs a level signal whose wind speed is less than the second wind speed value to input to the logic circuit.

The gas processing module converts the gas concentration information whose gas concentration is not greater than the first gas concentration value into a level signal to control the gas normal green light 131 to light up, and converts the gas concentration whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value. The information is converted into a level signal to control the gas warning light 132 to light up, and the gas concentration information whose gas concentration is greater than the second gas concentration value is converted into a level signal and input to the logic circuit for operation to control the relay 170 to disconnect the power supply. For convenience of description, as shown in FIG. 3 , in this embodiment, the gas processing module is divided into a first gas processing output terminal W1 , a second gas processing output terminal W2 and a third gas processing output terminal W3 . In this embodiment, after the gas concentration signal is processed, a level signal whose gas concentration is not greater than the first gas concentration value is output from the first gas processing output terminal W1 to control the gas normal green light 131 to light up to indicate that the current gas concentration is normal; The second gas processing output terminal W2 outputs a level signal whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value to control the gas warning light 132 to light up, which is used to warn that the current gas concentration is high, and it is necessary to be vigilant but It is not dangerous; a level signal whose gas concentration is greater than the second gas concentration value is output from the third gas processing output terminal W3 to input the logic circuit. The level signals output by the third wind speed processing output terminal F3 and the third gas processing output terminal W3 are input to the two input terminals of the first NAND gate circuit A1.

Specifically, the gas monitoring host also includes an alarm 140 and a set-top auxiliary ventilation fan 180 . Both the alarm 140 and the set top auxiliary ventilation fan 180 are electrically connected to the host processor 200 . Host processor 200 also includes counters and D flip-flops. The logic circuit includes a first NAND gate circuit A1 and a second NAND gate circuit A2. The input end of the counter is electrically connected to the gas processing module. Specifically, the second gas processing output end W2 is electrically connected to the input end of the counter. The input terminal of the D flip-flop is electrically connected to the output terminal of the counter, and a level signal whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value is output from the output of the D flip-flop. That is, when the gas concentration in the environment is greater than the first gas concentration value and not greater than the second gas concentration value for a certain period of time, the relay 170 can also be controlled to be powered off; the level signal output from the second gas output end passes through the counter. After a certain period of time countdown, the relay 170 is controlled to be powered off by completing one output through the D flip-flop.

Specifically, the level signal whose wind speed is lower than the second wind speed value (the level signal output by the second wind speed output terminal), and the level signal whose gas concentration is greater than the second gas concentration value (the level signal output by the second gas output terminal) ), both input to the two input terminals of the first NAND gate circuit A1. The output terminal of the D flip-flop and the output terminal of the first NAND circuit A1 are both input to the two input terminals of the second NAND circuit A2, and the output terminal of the second NAND circuit A2 is electrically connected to the relay 170 . The output end of the first NAND gate circuit A1 controls the alarm 140 and the top auxiliary ventilation fan 180 to work, that is, when the wind speed is less than the third wind speed value, or when the gas concentration is greater than the third gas concentration value, the alarm 140 sounds. And the opening of the auxiliary ventilation fan 180 on the top of the set is used to speed up the opening flow, reduce the gas concentration, and remind the staff of environmental hazards. To sum up, when at least one of the second wind speed output terminal and the second gas output terminal has a high level, the output terminal of the first NAND gate circuit A1 both outputs a high level; the output terminal of the first NAND gate circuit A1 and D trigger When at least one of the output terminals of the device has a high level, the output terminals of the second NAND gate circuit A2 all output a high level.

Specifically, the comparator includes a subtractor and an N-channel MOS transistor Q1 switch circuit; the subtractor includes two input terminals for inputting gas concentration level signals. The switching circuit of the N-channel MOS transistor Q1 includes an N-channel MOS transistor Q1 with a parasitic diode D1, and the parasitic diode D1 has a protective function. The output terminal of the subtractor is electrically connected to the gate of the N-channel MOS transistor Q1, and the fifth resistor R5 is electrically connected between the gate of the N-channel MOS transistor Q1 and the output terminal of the subtractor, and the N-channel MOS transistor The drain of Q1 is electrically connected to the DC power supply, the aisle auxiliary ventilation fan is electrically connected between the drain and the DC power supply, the fourth resistor R4 is electrically connected between the aisle auxiliary ventilation fan and the DC power supply, and the N-channel MOS transistor Q1 The source is grounded. The input end of the subtractor inputs the level signals of the gas concentration information measured by two adjacent different gas monitoring hosts, and the output end of the subtractor is the difference between the two level signals. When the output level of the subtractor is greater than a certain value, the switching circuit of the N-channel MOS transistor Q1 is turned on, that is, the N-channel MOS transistor Q1 is turned on, and the drain of the N-channel MOS transistor Q1 has an amplified output voltage The operation of the aisle auxiliary ventilation fan can be controlled.

The model of the subtractor can be determined according to actual needs, and is not limited to this embodiment. As shown in FIG. 4 , this embodiment only provides a most basic circuit diagram of the subtractor, and the subtractor includes an operational amplifier. The inverting input terminal of the operational amplifier is electrically connected to the first resistor R1, the non-inverting input terminal is electrically connected to the second resistor R2, the output terminal and the inverting input terminal are electrically connected to the feedback resistor, and the non-inverting input terminal is electrically connected to the ground. The third resistor R3 is electrically connected.

Fig. 1 and Fig. 2 are mechanical schematic diagrams of a coal mine gas monitoring device disclosed in this embodiment. As shown in Fig. 2, the gas monitoring host of this embodiment includes a body 300, and the gas sensor 150 and the wind speed sensor 160 are both It is fixedly connected with the outer surface of the body 300 . One side of the body 300 is fixedly connected to the display panel 100 , the wind speed normal green light 121 , the wind speed warning light 122 , the gas normal green light 131 , the gas warning light 132 , the alarm 140 and the display screen 110 are all arranged on the display panel 100 and fixed to the display panel 100 connect. A plurality of relays 170 are fixedly connected to one side of the body 300 . One side of the body 300 is provided with a door 190 rotatably connected to the body 300 , a processor chamber 400 is disposed inside the body 300 , and the door 190 isolates the processor chamber 400 from the external space. The host processor 200 is disposed in the processor chamber 400 . The top auxiliary ventilation fan 180 is fixedly connected to the top surface of the body 300 .

To sum up, this embodiment has the realization functions in the following table: For the convenience of explanation, let the wind speed not less than the first wind speed value be the first wind condition, let the wind speed be less than the first wind speed value and not less than the second wind speed value The case of the second wind condition is the second wind condition, the case where the wind speed is less than the second wind speed value is the third wind condition; the case where the gas concentration is not greater than the first gas concentration value is the first gas condition, and the gas concentration is greater than the first gas concentration value. The case where the gas concentration is not greater than the second gas concentration value is the second gas case, and the case where the gas concentration is greater than the second gas concentration value is the third gas case.

This embodiment is suitable for ventilation passages in coal mining areas, and setting the gas monitoring equipment in coal mining areas in this embodiment at the ventilation passages can effectively ensure that when the gas concentration is too high or the ventilation is not smooth, the power will be cut off in time to control each electrical equipment. stop working. The gas monitoring host of this embodiment has a display screen 110 , which can assist the staff to know the gas concentration and ventilation of the location where the gas monitoring host is placed in time. In this embodiment, when an abnormality occurs in either the ventilation or the gas concentration, the power is cut off in a timely and decisive manner, without the need for manual judgment or manual power off. In this embodiment, through the interaction of gas concentration information between two adjacent gas monitoring hosts, once the gas concentration difference is greater than a certain value, the aisle auxiliary ventilation fan between the two gas monitoring hosts is turned on to assist the air in time. circulation, to avoid the potential safety hazards caused by the increasing gas concentration difference. The gas monitoring host of this embodiment also carries a set-top auxiliary ventilation fan 180 , which can turn on the forced auxiliary air flow in time when the current environment is abnormal.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

In a word, the above are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.

Claims (6)

1. A gas monitoring device in a coal mining area, characterized in that it comprises a gas monitoring host, the gas monitoring host comprising a host processor (200), a wind speed sensor (160) for monitoring wind speed information, a gas monitoring host for monitoring gas concentration information gas sensor (150), relay (170) and display screen (110); The wind speed sensor (160) and the gas sensor (150) are both electrically connected to the host processor (200) and input the monitored data information to the host processor (200) for processing; the The relay (170) and the display screen (110) are both electrically connected to the host processor (200) and are controlled by the host processor (200); the relay (170) controls the electricity consumption in the coal mine area The power-off/power-on status of the equipment; the display screen (110) displays wind speed information and gas concentration information in the coal mine; The host processor (200) includes a wind speed processing module, a gas processing module and a logic circuit; the wind speed information processed by the wind speed processing module and the gas concentration information processed by the gas processing module are passed through the logic circuit. After the logic operation of the logic circuit, the working state of the relay (170) is controlled by the output level signal of the logic circuit; It also includes an aisle auxiliary fan, and the host processor (200) further includes a comparator and an RS485 serial communication interface; each of the aisle auxiliary fans is electrically connected to one of the gas monitoring hosts and is monitored by the gas Host control work; The gas concentration information is exchanged between two adjacent gas monitoring hosts through the RS485 serial communication interface; the gas concentration information of the two interacting sites is compared through the comparison inside one of the gas monitoring hosts After processing by the controller, the output level signal controls the operation of the aisle auxiliary fan electrically connected to the gas monitoring host. 2. The gas monitoring device in a coal mining area according to claim 1, wherein the gas monitoring host further comprises a wind speed warning light (122), a normal wind speed green light (121), a gas warning light (132) and a gas normal green light (131); The wind speed processing module converts the wind speed information whose wind speed is not less than the first wind speed value into a level signal to control the wind speed normal green light (121) to light up, and converts the wind speed information whose wind speed is less than the first wind speed value and not less than the second wind speed value. Converting into a level signal to control the wind speed warning light (122) to light up, converting the wind speed information whose wind speed is less than the second wind speed value into a level signal and inputting it into the logic circuit for operation to control the relay (170) to disconnect the power supply ; The gas processing module converts the gas concentration information whose gas concentration is not greater than the first gas concentration value into a level signal to control the gas normal green light (131) to light up, and the gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value. The gas concentration information of the gas concentration value is converted into a level signal to control the gas warning light (132) to light up, and the gas concentration information with the gas concentration greater than the second gas concentration value is converted into a level signal and input to the logic circuit for operation to obtain The relay (170) is controlled to disconnect the power supply. 3. The gas monitoring equipment in a coal mining area according to claim 2, wherein the gas monitoring host further comprises an alarm (140) and a set-top auxiliary ventilation fan (180); the alarm (140) and a machine The top auxiliary ventilation fans (180) are all electrically connected to the host processor (200); The host processor (200) further includes a counter and a D flip-flop; the logic circuit includes a first NAND gate circuit and a second NAND gate circuit; an input end of the counter is electrically connected to the gas processing module , the input terminal of the D flip-flop is electrically connected to the output terminal of the counter, and the level signal whose gas concentration is greater than the first gas concentration value and not greater than the second gas concentration value is output from the D flip-flop output; The level signal whose wind speed is less than the second wind speed value and the level signal whose gas concentration is greater than the second gas concentration value are both input to the two input ends of the first NAND gate circuit; The output terminal and the output terminal of the first NAND gate circuit are both input to the two input terminals of the second NAND gate circuit, and the output terminal of the second NAND gate circuit is electrically connected to the relay (170); The output end of the first NAND gate circuit controls the alarm (140) and the set-top auxiliary ventilation fan (180) to work. 4 . The gas monitoring device in a coal mine area according to claim 3 , wherein the comparator comprises a subtractor and an N-channel MOS transistor switch circuit; the subtractor comprises two signals for inputting gas concentration level. 5 . the input terminal; The N-channel MOS transistor switching circuit includes an N-channel MOS transistor with a parasitic diode; the output end of the subtractor is electrically connected to the gate of the N-channel MOS transistor, and the N-channel MOS transistor has an electrical connection. The drain is electrically connected to the DC power supply, the aisle auxiliary fan is electrically connected between the drain and the DC power supply, and the source of the N-channel MOS transistor is grounded. 5. coal mine area gas monitoring equipment according to claim 4, is characterized in that, The subtractor includes an operational amplifier; the inverting input terminal of the operational amplifier is electrically connected to the first resistor, the non-inverting input terminal is electrically connected to the second resistor, and the output terminal and the inverting input terminal are electrically connected to feedback a resistor, and a third resistor is electrically connected between the non-inverting input terminal and the ground. 6 . The gas monitoring device in a coal mining area according to claim 5 , wherein the gas monitoring host comprises a body ( 300 ), and the gas sensor ( 150 ) and the wind speed sensor ( 160 ) are both connected with the body (300) The outer surface is fixedly connected; one side of the body (300) is fixedly connected to the display panel (100), the normal wind speed green light (121), the wind speed warning light (122), the gas normal green light (131) , the gas warning light (132), the alarm (140) and the display screen (110) are all arranged on the display panel (100) and are fixedly connected with the display panel (100); the A plurality of relays (170) are fixedly connected to one side of the body (300); a processor chamber (400), the shutter (190) isolates the processor chamber (400) from an external space; the host processor (200) is arranged in the processor chamber (400); the The top auxiliary ventilation fan (180) is fixedly connected with the top surface of the body (300).

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