Mine environment monitoring system

Abstract

The utility model provides a mine environment monitoring system, and belongs to the technical field of mine monitoring. The mine environment monitoring system comprises a gas monitoring module, a temperature monitoring module, a comparison module, a first control module, a second control module and a ventilation control module, the gas monitoring module is connected with the first end of the comparison module, and the gas monitoring module is configured to monitor a gas signal in a mine; the second end of the comparison module is respectively connected with the first ends of the first control module and the second control module; the second end of the second control module is connected with the control end of the temperature monitoring module, the temperature monitoring module is configured to monitor temperature information in a mine and connected with the ventilation control module, the second end of the first control module is connected with the ventilation control module, and the ventilation control module is configured to circulate air in the mine. It can be ensured that the environment in the mine meets the construction safety and operation requirements.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of mine monitoring, and particularly relates to a mine environment monitoring system. BACKGROUND

[0002] In mine operation, the safety of the underground environment is crucial. There are many dangerous factors in the mine, such as harmful gas accumulation and temperature change, which can seriously threaten the life safety of construction personnel and the normal development of operation. The traditional mine environment monitoring means often relies on manual inspection, which has the disadvantages of long monitoring period and slow response speed, and cannot ensure that the environment in the mine meets the construction safety and operation requirements. CONTENT OF THE INVENTION

[0003] The present disclosure provides a mine environment monitoring system to ensure that the environment in the mine meets the construction safety and operation requirements.

[0004] The present disclosure provides a mine environment monitoring system, comprising: a gas monitoring module, a temperature monitoring module, a comparison module, a first control module, a second control module and a ventilation control module.

[0005] The gas monitoring module is connected to the first end of the comparison module, and the gas monitoring module is configured to monitor the gas signal in the mine.

[0006] The second end of the comparison module is connected to the first end of the first control module and the second control module, respectively.

[0007] The second end of the second control module is connected to the control end of the temperature monitoring module, the temperature monitoring module is configured to monitor the temperature information in the mine, the temperature monitoring module is connected to the ventilation control module, the second end of the first control module is connected to the ventilation control module, and the ventilation control module is configured to circulate the air in the mine.

[0008] In an exemplary embodiment of the present disclosure, the comparison module comprises: an operational amplifier U2.

[0009] The non-inverting input end of the operational amplifier U2 is connected to a Vref reference voltage, the non-inverting input end of the operational amplifier U2 is connected to the gas monitoring module, and the output end of the operational amplifier U2 is connected to the first end of the first control module and the second control module, respectively.

[0010] In an exemplary embodiment of the present disclosure, the first control module comprises: a resistor R6 and a triode Q4.

[0011] The first end of the resistor R6 is connected to the second end of the comparison module, the second end of the resistor R6 is connected to the base of the transistor Q4, the collector of the transistor Q4 is connected to the VCC power supply, and the emitter of the transistor Q4 is connected to the ventilation control module.

[0012] In an exemplary embodiment of the present disclosure, the second control module comprises: a resistor R3 and a transistor Q2.

[0013] The first end of the resistor R3 is connected to the second end of the comparison module, the second end of the resistor R3 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to the VCC power supply, and the collector of the transistor Q2 is connected to the control end of the temperature monitoring module.

[0014] In an exemplary embodiment of the present disclosure, the temperature monitoring module comprises: a thermistor RT, a resistor R2, a capacitor C1 and a timer U1.

[0015] The thermistor RT serves as the control end of the temperature monitoring module, the second end of the thermistor RT is connected to the discharge end of the timer U1, the second end of the thermistor RT is connected to the first end of the capacitor C1 through the resistor R2, the high trigger end of the timer U1 and the low trigger end of the timer U1 are both connected to the first end of the capacitor C1, the second end of the capacitor C1 is grounded, the power supply end of the timer U1 is connected to the VCC power supply, and the output end of the timer U1 is connected to the ventilation control module.

[0016] In an exemplary embodiment of the present disclosure, the temperature monitoring module further comprises: a transistor Q1 and a resistor R1.

[0017] The base of the transistor Q1 is connected to the output end of the timer U1, the collector of the transistor Q1 is connected to the VCC power supply, the emitter of the transistor Q1 is grounded through the resistor R1, and the emitter of the transistor Q1 is connected to the ventilation control module.

[0018] In an exemplary embodiment of the present disclosure, the ventilation control module comprises: a switch tube Q3 and a fan U3.

[0019] The first end of the switch tube Q3 is connected to the emitter of the transistor Q1, the first end of the switch tube Q3 is connected to the VDD power supply, the second end of the switch tube Q3 is connected to the first end of the fan U3, and the second end of the fan U3 is grounded.

[0020] In an exemplary embodiment of the present disclosure, it further comprises: a collection module, a master control module and a communication module.

[0021] The first end of the collection module is connected to the ventilation control module, and the second end of the collection module is connected to the main control module.

[0022] In an example embodiment of the present disclosure, the collection module comprises a rheostat RP1 and a voltage stabilizing tube D2.

[0023] The first end of the rheostat RP1 is connected to the ventilation control module, the second end of the rheostat RP1 is grounded, the sliding end of the rheostat RP1 is connected to the cathode of the voltage stabilizing tube D2, the anode of the voltage stabilizing tube D2 is grounded, and the sliding end of the rheostat RP1 is connected to the main control module.

[0024] In an example embodiment of the present disclosure, the first control module further comprises a diode D1 and an alarm B1.

[0025] The anode of the diode D1 is connected to the emitter of the triode Q4, the cathode of the diode D1 is connected to the first end of the alarm B1, and the second end of the alarm B1 is connected to the ventilation control module.

[0026] The mine environment monitoring system provided by the example embodiment of the present disclosure has the beneficial effects that: the example embodiment of the present disclosure monitors and judges the gas concentration in the mine through the gas monitoring module and the comparison module, and according to the gas concentration, the ventilation control module is controlled differently through the first control module or the second control module. When the gas concentration is normal, the example embodiment of the present disclosure focuses on the adjustment of the mine environment temperature, which is realized through the temperature monitoring module and the ventilation control module; when the gas concentration exceeds the standard, the system prioritizes personnel safety, so that the ventilation control module works at the maximum ventilation volume to speed up air circulation. Through such cooperative work, the environment in the mine can meet the construction safety and operation requirements in terms of gas and temperature. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the example embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a structural schematic diagram of the mine environment monitoring system provided by the example embodiment of the present disclosure;

[0029] Figure 2 is a circuit diagram of the mine environment monitoring system provided by the example embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] In order to make the person skilled in the art better understand the scheme, the technical solutions in the scheme embodiments will be clearly described below in combination with the drawings in the scheme embodiments. Obviously, the described embodiments are part of the embodiments of the scheme, rather than all the embodiments. Based on the embodiments in the scheme, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the scheme.

[0031] The term "comprising" and other any variations thereof in the specification and claims of the scheme and the above-mentioned drawings means "including but not limited to", which is intended to cover non-exclusive inclusion and is not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0032] The implementation of the present disclosure is described in detail below in combination with specific drawings:

[0033] Figure 1 A structural schematic diagram of a mine environment monitoring system provided by the present disclosure is provided. Referring to Figure 1 The mine environment monitoring system comprises a gas monitoring module, a temperature monitoring module, a comparison module, a first control module, a second control module and a ventilation control module. The gas monitoring module is connected to the first end of the comparison module, and the gas monitoring module is configured to monitor the gas signal in the mine. The second end of the comparison module is respectively connected to the first end of the first control module and the second control module. The second end of the second control module is connected to the control end of the temperature monitoring module, and the temperature monitoring module is configured to monitor the temperature information in the mine. The temperature monitoring module is connected to the ventilation control module, and the second end of the first control module is connected to the ventilation control module. The ventilation control module is configured to circulate the air in the mine.

[0034] In the present embodiment, the gas monitoring module is used to monitor the gas signal in the mine. The gas monitoring module can convert the monitored gas signal into a suitable electrical signal and output it to the first end of the comparison module. For example, a gas sensor is used. When harmful gases such as gas and carbon monoxide exist in the mine, corresponding physical or chemical changes will occur. The gas monitoring module converts such changes into a measurable electrical signal, such as a voltage signal.

[0035] The comparison module can compare the voltage signal output by the gas monitoring module with the set reference voltage to determine whether the gas concentration in the mine exceeds the set value. The comparison module can output a high or low level signal based on the output result of the gas monitoring module.

[0036] The first control module and the second control module respectively receive the control signal output by the comparison module, when the measured gas signal concentration in the mine is lower than the set value, the second control module works, the first control module does not work, the second control module outputs the control signal to the temperature monitoring module, and the temperature monitoring module is used for monitoring the environmental temperature in the mine; the environmental temperature signal in the mine is converted into a corresponding pulse signal output. The duty cycle of the output pulse signal is different at different environmental temperatures. Assuming that the duty cycle of the output pulse signal is 30% in a low-temperature environment and 70% in a high-temperature environment, the characterization of different temperatures is realized.

[0037] The pulse signal output by the temperature monitoring module can control the ventilation control module, and the ventilation control module can be a fan. The ventilation control module can control the rotating speed of the fan based on the duty cycle of the pulse signal output by the temperature monitoring module, so as to change the speed of air circulation and ensure that the environmental temperature of the mine meets the operation requirements.

[0038] When the measured gas signal concentration in the mine is higher than the set value, the control signal output by the comparison module changes, at this time, the first control module works, the second control module does not work, and the control signal output by the second control module is directly added to the ventilation control module, at this time, the working mode of the ventilation control module can be switched from the pulse control mode to the continuous control mode, at this time, the fan works at the maximum rotating speed, further accelerating the air circulation of the mine environment, and ensuring the safety of the construction personnel in the mine.

[0039] From the above, it can be seen that, in the embodiment, the gas concentration in the mine is monitored and judged by the gas monitoring module and the comparison module, different control operations are performed on the ventilation control module by the first control module or the second control module according to the gas concentration, when the gas concentration is normal, the embodiment focuses on the adjustment of the environmental temperature of the mine, which is realized by the temperature monitoring module and the ventilation control module, when the gas concentration exceeds the standard, the system prioritizes personnel safety, so that the ventilation control module works at the maximum ventilation volume to accelerate air circulation. Through such cooperative work, it is ensured that the environment in the mine can meet the construction safety and operation requirements in terms of gas and temperature.

[0040] As shown in FIG. 1, Figure 2 As shown in FIG. 1, in an embodiment of the present disclosure, the comparison module comprises: an operational amplifier U2; the inverting input end of the operational amplifier U2 is connected with a Vref reference voltage, the non-inverting input end of the operational amplifier U2 is connected with the gas monitoring module, and the output end of the operational amplifier U2 is respectively connected with the first end of the first control module and the second control module.

[0041] In the embodiment, the Vref reference voltage is a fixed voltage value preset as a reference for comparison. For example, the upper limit of the safe gas concentration in the mine can be converted into a corresponding voltage value as a standard for judging whether the gas concentration exceeds the standard.

[0042] The non-inverting input of the operational amplifier U2 receives a voltage signal representing the gas concentration in the mine from the gas monitoring module. The magnitude of the voltage signal varies according to the gas concentration in the mine. For example, when the concentration of harmful gas in the mine increases, the voltage signal output by the gas monitoring module increases; conversely, when the gas concentration decreases, the output voltage signal decreases.

[0043] When the voltage at the non-inverting input is lower than the Vref reference voltage at the inverting input, it means that the gas concentration in the mine is lower than the set safety standard, and the operational amplifier U2 outputs a low-level signal.

[0044] When the voltage at the non-inverting input is higher than the Vref reference voltage at the inverting input, it means that the gas concentration in the mine is higher than the set safety standard, and the operational amplifier U2 outputs a high-level signal.

[0045] In this embodiment, the operational amplifier U2 compares the voltage signal output by the gas monitoring module with the Vref reference voltage, generates different level outputs, and further controls the working state of the first control module and the second control module, so as to finally realize flexible adjustment of the working mode of the ventilation control module according to the different gas concentrations in the mine, so as to meet the safety guarantee when the gas concentration in the mine exceeds the standard and the temperature regulation demand when the gas concentration is normal.

[0046] As shown in FIG. 1, Figure 2 In an embodiment of the present disclosure, the first control module comprises a resistor R6 and a triode Q4; the first end of the resistor R6 is connected to the second end of the comparison module, the second end of the resistor R6 is connected to the base of the triode Q4, the collector of the triode Q4 is connected to the VCC power supply, and the emitter of the triode Q4 is connected to the ventilation control module.

[0047] In this embodiment, the triode Q4 can be an NPN triode. When the comparison module outputs a high-level signal (indicating that the gas concentration in the mine is higher than the set value), the high-level signal passes through the resistor R6 to the base of the triode Q4. Since the base receives a high-level signal, the triode Q4 is in a conducting state. After the triode Q4 is turned on, a current path from the VCC power supply to the ventilation control module is formed, and the current flows from the VCC through the collector of the triode Q4 and flows into the ventilation control module through the emitter.

[0048] When the comparison module outputs a low-level signal (indicating that the gas concentration in the mine is lower than the set value), the base of the triode Q4 does not have enough voltage and current, and the triode Q4 is cut off. The ventilation control module does not receive a continuous power supply signal from the first control module, and it does not continuously work at the maximum speed.

[0049] As shown in FIG. 1, Figure 2As shown, in one embodiment of this disclosure, the second control module includes: a resistor R3 and a transistor Q2; the first end of the resistor R3 is connected to the second end of the comparator module, the second end of the resistor R3 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to the VCC power supply, and the collector of the transistor Q2 is connected to the control terminal of the temperature monitoring module.

[0050] In this embodiment, transistor Q2 can be a PNP transistor.

[0051] When the comparator module outputs a low-level signal (indicating that the gas concentration in the mine is lower than the set value), the low-level signal travels through resistor R3 to the base of transistor Q2. Transistor Q2 then conducts. This creates a current path from the VCC power supply to the temperature monitoring module's control terminal, allowing the VCC power supply to provide the operating voltage and current to the temperature monitoring module, thus enabling the temperature monitoring module to start working.

[0052] The temperature monitoring module starts to convert the ambient temperature signal in the mine into a corresponding pulse signal output, and then generates pulse signals with different duty cycles according to different ambient temperatures. These pulse signals can be used to control the speed of the ventilation control module to regulate the ambient temperature in the mine and meet the operational requirements.

[0053] When the comparator module outputs a high-level signal (indicating that the gas concentration in the mine is higher than the set value), the base of transistor Q2 receives a high-level signal. Transistor Q2 is then in the off state. The temperature monitoring module no longer receives operating signals from the second control module and therefore stops working.

[0054] like Figure 2 As shown, in one embodiment of this disclosure, the temperature monitoring module includes: a thermistor RT, a resistor R2, a capacitor C1, and a timer U1; the thermistor RT serves as the control terminal of the temperature monitoring module, the second terminal of the thermistor RT is connected to the discharge terminal of the timer U1, the second terminal of the thermistor RT is connected to the first terminal of the capacitor C1 through the resistor R2, the high trigger terminal and the low trigger terminal of the timer U1 are both connected to the first terminal of the capacitor C1, the second terminal of the capacitor C1 is grounded, the power supply terminal of the timer U1 is connected to the VCC power supply, and the output terminal of the timer U1 is connected to the ventilation control module.

[0055] In this embodiment, a 555 timer can be used as timer U1. The thermistor RT, resistor R2, capacitor C1, and timer U1 constitute a pulse generation circuit. The thermistor RT can have a positive temperature coefficient. The higher the ambient temperature in the mine, the greater the proportion of the discharge time in the total cycle, thus increasing the duty cycle of the pulse signal output by timer U1. Conversely, when the ambient temperature in the mine decreases, the resistance value of the thermistor RT decreases, the charging time becomes relatively shorter, the discharge time also becomes shorter, and the duty cycle decreases.

[0056] The pulse signal output by timer U1 is directly connected to the ventilation control module. The working state of the ventilation control module is controlled according to the duty cycle of the pulse signal, such as controlling the speed of the fan.

[0057] When the duty cycle of the pulse signal output by timer U1 increases (high mine ambient temperature), the ventilation control module will correspondingly increase the fan speed to enhance ventilation and thus reduce the temperature inside the mine; when the duty cycle of the pulse signal decreases (low mine ambient temperature), the ventilation control module will reduce the fan speed to reduce ventilation and maintain a suitable temperature inside the mine.

[0058] like Figure 2 As shown, in one embodiment of this disclosure, the temperature monitoring module further includes: a transistor Q1 and a resistor R1; the base of transistor Q1 is connected to the output terminal of timer U1, the collector of transistor Q1 is connected to the VCC power supply, the emitter of transistor Q1 is grounded through resistor R1, and the emitter of transistor Q1 is connected to the ventilation control module.

[0059] In this embodiment, since the driving capability of the pulse signal output by timer U1 is weak and cannot directly drive the ventilation control module, transistor Q1 and resistor R1 constitute the driving circuit. An NPN transistor can be used as transistor Q1.

[0060] When timer U1 outputs a pulse signal, the signal is applied to the base of transistor Q1.

[0061] When the base of transistor Q1 receives a high-level signal, transistor Q1 turns on. At this time, current flows from the VCC power supply through the collector of transistor Q1 and out through the emitter. Due to the amplification effect of transistor Q1, the current output from the emitter is enhanced, and a loop is formed through resistor R1 to ground.

[0062] This amplified current provides sufficient drive capability for the ventilation control module, enabling it to perform corresponding operations based on the high-level state of the pulse signal, such as driving some actions of the fan (e.g., starting or speed adjustment). When the base receives a low-level signal, transistor Q1 is cut off. At this time, the current path from VCC to the ventilation control module is interrupted.

[0063] like Figure 2 As shown, in one embodiment of this disclosure, the ventilation control module includes: a switch Q3 and a fan U3; the first end of the switch Q3 is connected to the emitter of the transistor Q1, the first end of the switch Q3 is connected to the VDD power supply, the second end of the switch Q3 is connected to the first end of the fan U3, and the second end of the fan U3 is grounded.

[0064] In the embodiment, when the gas concentration is higher than the set value, the triode Q4 in the first control module is turned on, and the working mode of the ventilation control module is switched to the continuous control mode. At this time, the switch tube Q3 is in a continuous conduction state, so that the fan U3 directly obtains stable power supply from the VDD power supply to work at the maximum speed.

[0065] In this case, the switch tube Q3 acts as a continuously on switch to stably transmit the power of the VDD power supply to the fan U3, so as to ensure that the fan quickly updates the air in the mine at the maximum ventilation volume, thereby guaranteeing the safety of the construction personnel.

[0066] When the gas concentration is lower than the set value, the triode Q2 in the second control module is turned on, and the temperature monitoring module starts to work to generate a pulse signal. The triode Q1 amplifies the pulse signal of the timer U1 and transmits the pulse signal to the first end of the switch tube Q3.

[0067] Through the cooperation of the switch tube Q3 and the fan U3, the ventilation control module realizes different ventilation control modes according to different control signals. When the gas concentration is higher than the set value, the maximum ventilation volume is provided to guarantee safety; when the gas concentration is lower than the set value, the speed of the fan U3 is controlled through the switch tube Q3 according to the pulse signal of the temperature monitoring module, so as to adjust the environmental temperature in the mine, thereby realizing the comprehensive regulation and control of the mine environment by the system, meeting the needs of mine operation in different situations, and guaranteeing the safety and suitability of the mine environment.

[0068] As shown in FIG. 1, Figure 1 As shown in FIG. 1, in an embodiment of the disclosure, the ventilation control module further comprises a collection module, a main control module and a communication module; the first end of the collection module is connected to the ventilation control module, the second end of the collection module is connected to the main control module, and the main control module is in communication connection with the monitoring platform through the communication module.

[0069] In the embodiment, when the gas concentration is higher than the set value, the ventilation control module receives a continuous signal, and when the gas concentration is lower than the set value, the ventilation control module receives a pulse signal. The collection module can send the type of the received signal to the main control module based on the type of the signal received by the ventilation control module. The main control module determines whether the gas concentration is out of standard based on the type of the signal received by the ventilation control module. If the gas concentration is not out of standard, the main control module can determine the environmental temperature value in the mine based on the duty cycle of the pulse signal.

[0070] The main control module sends the information such as whether the gas concentration is out of standard and the environmental temperature value to the monitoring platform through the communication module.

[0071] The monitoring platform can be a remote monitoring system. Staff can view the gas concentration and ambient temperature information in the mine in real time on the monitoring platform so as to keep abreast of the safety and suitability of the mine environment. When an abnormal situation occurs, a rapid response can be made, such as dispatching personnel to check, adjusting ventilation system parameters, or taking other emergency measures.

[0072] like Figure 2 As shown, in one embodiment of this disclosure, the acquisition module includes: a rheostat RP1 and a Zener diode D2; the first end of the rheostat RP1 is connected to the ventilation control module, the second end of the rheostat RP1 is grounded, the sliding end of the rheostat RP1 is connected to the cathode of the Zener diode D2, the anode of the Zener diode D2 is grounded, and the sliding end of the rheostat RP1 is connected to the main control module.

[0073] In this embodiment, for the continuous electrical signal when the gas concentration is higher than the set value:

[0074] When a continuous electrical signal is input to the variable resistor RP1, a stable voltage drop is generated across RP1 due to the characteristics of the continuous electrical signal. By adjusting the position of the sliding contact of the variable resistor RP1, this stable voltage drop can be divided into a suitable range and output to the cathode of the Zener diode D2.

[0075] The main control module receives the stable voltage signal through the sliding terminal of the variable resistor RP1, thereby determining that the ventilation control module is receiving a continuous electrical signal, and thus inferring that the gas concentration exceeds the standard.

[0076] For pulse signals when the gas concentration is below the set value:

[0077] When a pulse signal is input to the variable resistor RP1, the sliding terminal of the variable resistor RP1 will generate a corresponding voltage change according to the high and low level changes of the pulse signal in each pulse cycle.

[0078] When the pulse signal is at a high level, the voltage at the sliding end of the rheostat RP1 increases, and the voltage can be divided by adjusting the position of the sliding end; when the pulse signal is at a low level, the voltage at the sliding end of the rheostat RP1 is 0.

[0079] Zener diode D2 shunts excessively high voltages according to different voltage conditions, ensuring that the voltage input to the main control module is within a safe range.

[0080] like Figure 2 As shown, in one embodiment of this disclosure, the first control module further includes: a diode D1 and an alarm B1; the anode of the diode D1 is connected to the emitter of the transistor Q4, the cathode of the diode D1 is connected to the first terminal of the alarm B1, and the second terminal of the alarm B1 is connected to the ventilation control module.

[0081] In the embodiment, the diode D1 and the alarm B1 constitute the alarm circuit. When the gas concentration in the mine is higher than the set value, the comparison module outputs a high level signal, which triggers the triode Q4 to conduct through the resistance R6. After the triode Q4 is turned on, the current flows from the VCC power supply through the collector and the emitter of the triode Q4. At this time, the current flows to the alarm B1 through the diode D1, and due to the one-way conduction characteristic of the diode D1, it is ensured that the current can be correctly transmitted to the alarm B1. After the alarm B1 receives the current, it starts to work and sends an alarm signal to inform the staff that the gas concentration in the mine has exceeded the standard and corresponding measures need to be taken. At the same time, the ventilation control module also enters the continuous control mode, so that the fan works at the maximum speed to speed up the air circulation in the mine and ensure the safety of the personnel.

[0082] The combination of the alarm circuit and the rapid ventilation action of the ventilation control module improves the safety and reliability of the mine environment monitoring system in dangerous situations, which helps to protect the life safety of the underground operating personnel.

[0083] The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A mine environment monitoring system, characterized in that, include: Gas monitoring module, temperature monitoring module, comparison module, first control module, second control module and ventilation control module; The gas monitoring module is connected to the first end of the comparison module, and the gas monitoring module is configured to monitor gas signals in the mine. The second end of the comparison module is connected to the first end of the first control module and the first end of the second control module, respectively; The second terminal of the second control module is connected to the control terminal of the temperature monitoring module, which is configured to monitor temperature information in the mine. The temperature monitoring module is connected to the ventilation control module, and the second terminal of the first control module is connected to the ventilation control module, which is configured to circulate air in the mine.

2. The mine environment monitoring system as described in claim 1, characterized in that, The comparison module includes: operational amplifier U2; The non-inverting input of the operational amplifier U2 is connected to the Vref reference voltage, the non-inverting input of the operational amplifier U2 is connected to the gas monitoring module, and the output of the operational amplifier U2 is connected to the first terminal of the first control module and the first terminal of the second control module, respectively.

3. The mine environment monitoring system as described in claim 1, characterized in that, The first control module includes: resistor R6 and transistor Q4; The first end of the resistor R6 is connected to the second end of the comparator module, the second end of the resistor R6 is connected to the base of the transistor Q4, the collector of the transistor Q4 is connected to the VCC power supply, and the emitter of the transistor Q4 is connected to the ventilation control module.

4. The mine environment monitoring system as described in claim 1, characterized in that, The second control module includes: resistor R3 and transistor Q2; The first end of the resistor R3 is connected to the second end of the comparator module, the second end of the resistor R3 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to the VCC power supply, and the collector of the transistor Q2 is connected to the control terminal of the temperature monitoring module.

5. The mine environment monitoring system as described in claim 1, characterized in that, The temperature monitoring module includes: a thermistor RT, a resistor R2, a capacitor C1, and a timer U1; The thermistor RT serves as the control terminal of the temperature monitoring module. The second terminal of the thermistor RT is connected to the discharge terminal of the timer U1. The second terminal of the thermistor RT is connected to the first terminal of the capacitor C1 through the resistor R2. The high trigger terminal and the low trigger terminal of the timer U1 are both connected to the first terminal of the capacitor C1. The second terminal of the capacitor C1 is grounded. The power supply terminal of the timer U1 is connected to the VCC power supply. The output terminal of the timer U1 is connected to the ventilation control module.

6. The mine environment monitoring system as described in claim 5, characterized in that, The temperature monitoring module also includes: transistor Q1 and resistor R1; The base of transistor Q1 is connected to the output terminal of timer U1, the collector of transistor Q1 is connected to VCC power supply, the emitter of transistor Q1 is grounded through resistor R1, and the emitter of transistor Q1 is connected to the ventilation control module.

7. The mine environment monitoring system as described in claim 6, characterized in that, The ventilation control module includes: a switch Q3 and a fan U3; The first end of the switching transistor Q3 is connected to the emitter of the transistor Q1, the first end of the switching transistor Q3 is connected to the VDD power supply, the second end of the switching transistor Q3 is connected to the first end of the fan U3, and the second end of the fan U3 is grounded.

8. The mine environment monitoring system as described in claim 1, characterized in that, Also includes: The module consists of a data acquisition module, a main control module, and a communication module. The first end of the acquisition module is connected to the ventilation control module, and the second end of the acquisition module is connected to the main control module. The main control module communicates with the monitoring platform through the communication module.

9. The mine environment monitoring system as described in claim 8, characterized in that, The acquisition module includes: a variable resistor RP1 and a Zener diode D2; The first end of the variable resistor RP1 is connected to the ventilation control module, the second end of the variable resistor RP1 is grounded, the sliding end of the variable resistor RP1 is connected to the cathode of the Zener diode D2, the anode of the Zener diode D2 is grounded, and the sliding end of the variable resistor RP1 is connected to the main control module.

10. The mine environment monitoring system as described in claim 3, characterized in that, The first control module also includes: diode D1 and alarm B1; The anode of diode D1 is connected to the emitter of transistor Q4, the cathode of diode D1 is connected to the first terminal of alarm B1, and the second terminal of alarm B1 is connected to the ventilation control module.

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