CN220248159U - Emergency rescue management system - Google Patents
Emergency rescue management system Download PDFInfo
- Publication number
- CN220248159U CN220248159U CN202321952788.7U CN202321952788U CN220248159U CN 220248159 U CN220248159 U CN 220248159U CN 202321952788 U CN202321952788 U CN 202321952788U CN 220248159 U CN220248159 U CN 220248159U
- Authority
- CN
- China
- Prior art keywords
- resistor
- operational amplifier
- input end
- triode
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 11
- 230000003750 conditioning effect Effects 0.000 claims description 10
- 239000003245 coal Substances 0.000 abstract description 22
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000005284 excitation Effects 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 206010042772 syncope Diseases 0.000 description 1
Abstract
The utility model relates to the technical field of emergency rescue management, and provides an emergency rescue management system, which comprises a collapse monitoring circuit, wherein the collapse monitoring circuit comprises a transformer T1, a triode Q2, a silicon controlled rectifier U1 and a displacement sensor P1, the collector of the triode Q1 is connected with a first input end of the transformer T1 and is connected with a main control unit, the first end of a resistor R3 is connected with the main control unit, the second end of the resistor R3 is grounded through a resistor R4, the second input end of the transformer T1 is connected with an emitter of the triode Q2, the third input end of the transformer T1 is connected with the second end of the resistor R3, the fourth input end of the transformer T1 is connected with a base electrode of the triode Q2, the first output end of the transformer T1 is connected with an anode of the silicon controlled rectifier U1, the cathode of the silicon controlled rectifier U1 is connected with the first end of the displacement sensor P1, the control end of the silicon controlled rectifier U1 is connected with the main control unit, and the second end of the displacement sensor P1 is connected with the main control unit. Through the technical scheme, the problem of poor monitoring accuracy of coal mine collapse in the related technology is solved.
Description
Technical Field
The utility model relates to the technical field of emergency rescue management, in particular to an emergency rescue management system.
Background
With the development of coal industry in China, many coal mine enterprises are provided with emergency rescue management systems so as to ensure the development of emergency rescue work. The good emergency rescue management system can provide all-round reliable information of the coal mine accident so that the emergency command center can output high-efficiency processing instructions, and scientific emergency plans are adopted to realize scientific high-efficiency processing and timely and effective control of the coal mine accident. The emergency rescue management system comprises a monitoring system, and needs to dynamically monitor the coal mine production in real time, and adopts the technical means of safety supervision and prevention to prevent accidents. The collapse of the coal mine is one of important monitoring objects, once the collapse of the coal mine occurs, the coal mine can bring serious damage to land resources, and meanwhile, the potential safety hazard is brought to the personal safety of mine workers. Because the environment of coal mine production is complex, the accuracy of coal mine collapse monitoring is poor, early warning can not be timely carried out on possible disaster accidents, the emergency rescue management efficiency is reduced to a certain extent, and the optimal emergency rescue time can be missed.
Disclosure of Invention
The utility model provides an emergency rescue management system, which solves the problem of poor monitoring accuracy of coal mine collapse in the related technology.
The technical scheme of the utility model is as follows:
the emergency rescue management system comprises a collapse monitoring circuit, a wireless communication unit and a main control unit, wherein the collapse monitoring circuit is connected with the main control unit, the main control unit is in communication connection with a monitoring terminal by means of the wireless communication unit, the collapse monitoring circuit comprises a resistor R2, a triode Q1, a resistor R3, a resistor R4, a transformer T1, a triode Q2, a silicon controlled rectifier U1, a diode D4 and a displacement sensor P1,
the base of triode Q1 passes through resistance R2 connects the first output of main control unit, triode Q1's projecting pole is connected 5V power, triode Q1's collecting electrode is connected the first input of transformer T1, triode Q1's collecting electrode is connected resistance R3's first end, resistance R3's second end passes through resistance R4 ground connection, transformer T1's second input is connected triode Q2's projecting pole, transformer T1's third input is connected resistance R3's second end, transformer T1's fourth input is connected triode Q2's base, triode Q2's collecting electrode ground, transformer T1's first output is connected silicon controlled rectifier U1's positive pole, silicon controlled rectifier U1's negative pole is connected displacement sensor P1's first end, silicon controlled rectifier U1's control end is connected diode D4 the second end of resistor R3, the second input of transformer T1's second end is connected the displacement sensor P1.
Further, in the utility model, a signal conditioning circuit is arranged between the second end of the displacement sensor P1 and the first input end of the main control unit, the signal conditioning circuit comprises an operational amplifier U3, a resistor R9 and a resistor R11, the non-inverting input end of the operational amplifier U3 is connected with the second end of the displacement sensor P1, the inverting input end of the operational amplifier U3 is grounded, the output end of the operational amplifier U3 is connected with the non-inverting input end of the operational amplifier U3 through the resistor R9, the output end of the operational amplifier U3 is connected with a 2.5V power supply through the resistor R11, and the output end of the operational amplifier U3 is connected with the first input end of the main control unit.
Further, the signal conditioning circuit in the utility model further comprises a resistor R7, a resistor R8, an operational amplifier U2, a resistor R6, a capacitor C4, a capacitor C6 and a resistor R10, wherein the non-inverting input end of the operational amplifier U2 is connected with the second end of the displacement sensor P1 through the resistor R8, the inverting input end of the operational amplifier U2 is grounded through the resistor R7, the output end of the operational amplifier U2 is connected with the inverting input end of the operational amplifier U2 through the resistor R6, the capacitor C4 is connected in parallel with the two ends of the resistor R6, the output end of the operational amplifier U2 is connected with the first end of the resistor R10 through the capacitor C6, and the second end of the resistor R10 is connected with the non-inverting input end of the operational amplifier U3.
Further, the utility model also comprises a gas monitoring circuit, the gas monitoring circuit comprises a gas sensor P2, a resistor R13, an operational amplifier U4, an operational amplifier U5, a resistor R15, a resistor R14, a resistor R16, a rheostat RP1, a resistor R17, a resistor R18, an operational amplifier U6 and a resistor R19, the power supply end of the gas sensor P2 is connected with a 5V power supply, the output end of the gas sensor P2 is connected with the in-phase input end of the operational amplifier U4 through the resistor R13, the grounding end of the gas sensor P2 is grounded, the inverting input end of the operational amplifier U4 is connected with the in-phase input end of the operational amplifier U5 through the resistor R15, the in-phase input end of the operational amplifier U5 is connected with the sliding end of the rheostat RP1, the first end of the rheostat RP1 is connected with a 5V power supply, the output end of the operational amplifier U4 is connected with the inverting end through the resistor R14, the inverting end of the operational amplifier U4 is connected with the inverting end of the operational amplifier U6 through the inverting end of the resistor R6, and the inverting end of the operational amplifier U6 is connected with the inverting end of the operational amplifier U6.
Further, the utility model also comprises a temperature monitoring circuit, wherein the temperature monitoring circuit comprises a resistor R23, a resistor R28, a thermistor RT, a resistor R29, a resistor R31, a resistor R30, an operational amplifier U7 and a resistor R24, wherein the first end of the resistor R23 is connected with a 5V power supply, the second end of the resistor R23 is grounded through the thermistor RT, the first end of the resistor R28 is connected with the 5V power supply, the second end of the resistor R28 is grounded through the resistor R29, the non-inverting input end of the operational amplifier U7 is connected with the second end of the resistor R23 through the resistor R31, the inverting input end of the operational amplifier U7 is connected with the second end of the resistor R28 through the resistor R30, the output end of the operational amplifier U7 is connected with the inverting input end of the operational amplifier U7 through the resistor R24, and the output end of the operational amplifier U7 is connected with the third input end of the main control unit.
Further, the utility model also comprises an alarm circuit, wherein the alarm circuit comprises a resistor R25, an optocoupler U8, a resistor R27, a resistor R26, a switching tube Q3, a resistor R22 and an alarm B1, wherein a first input end of the optocoupler U8 is connected with a 5V power supply, a second input end of the optocoupler U8 is connected with a third output end of the main control unit through the resistor R25, a first output end of the optocoupler U8 is connected with the 5V power supply through the resistor R27, a second output end of the optocoupler U8 is connected with a control end of the switching tube Q3 through the resistor R26, a first end of the switching tube Q3 is connected with the 5V power supply through the resistor R22, a second end of the switching tube Q3 is connected with a first end of the alarm B1, and a second end of the alarm B1 is grounded.
The working principle and the beneficial effects of the utility model are as follows:
in the utility model, the collapse monitoring circuit is used for monitoring the occurrence of accidents such as collapse or debris flow in the production process of the coal mine, converting the monitored accident signals into electric signals and sending the electric signals to the main control unit, and the main control unit sends the accident signals to the monitoring terminal through the wireless communication unit, and when relevant staff receive the accident signals, emergency measures are timely taken.
When the coal mine collapses, a pressure signal or a strain signal is added to the displacement sensor P1, and the displacement sensor P1 judges whether collapse accidents occur or not according to the stress. The working principle in the collapse monitoring circuit is as follows: the first output end of the main control unit outputs PWM control signals to the base electrode of the triode Q1, the triode Q1 forms an amplifying circuit for improving the driving capability of the PWM control signals, when the PWM control signals are high level, the triode Q1 is cut off, the input end of the transformer has no voltage, when the PWM control signals are low level, the triode Q1 is conducted, the first input end of the transformer T1 and the second input end of the transformer T1 form a first input end coil, the third input end of the transformer T1 and the fourth input end of the transformer T1 form a second input end coil, at this time, the first input coil of the transformer T1 generates voltage, the resistor R3 and the resistor R4 form a voltage dividing circuit, the voltage at two ends of the resistor R4 is added to the second coil, the base voltage of the triode Q2 is lower than the emitter voltage of the triode Q2, the triode Q2 is conducted, a 5V power supply forms a passage through the triode Q1, the first input coil of the transformer T1 and the triode Q2, the first output end of the transformer T1 and the second output end of the transformer T1 form an output coil, at this time, the output coil of the transformer T1 generates induction voltage, the transformer T1 is a step-up transformer, during operation, the second output end of the main control unit outputs a high-level signal, an electric signal output by the transformer T1 is added to the first end of the displacement sensor P1 after passing through the controllable silicon U1, and the first end of the displacement sensor P1 is an excitation end of the vibrating wire sensor. At this time, when a tower accident occurs, the displacement sensor P1 monitors a stress signal and converts the stress signal into an electric signal to be sent to the main control unit.
Because the environment of coal mine production is complex, in the process of monitoring coal mine collapse, current in a circuit possibly floats, so that an excitation signal of a displacement sensor P1 is unstable, and collapse accident monitoring is inaccurate, therefore, when the output current of a power supply is larger, the current flowing through an emitter of a triode Q2 becomes larger, meanwhile, the partial voltage on a resistor R4 becomes larger, the current of a base of the triode Q2 becomes larger, and the current of the emitter of the triode Q2 is restrained from being larger, namely, the current flowing through a first input coil of a transformer T1 is unchanged; when the output current of the power supply is smaller, the current flowing through the emitter of the triode Q2 becomes smaller, meanwhile, the voltage division on the resistor R4 becomes smaller, the base current of the triode Q2 also becomes smaller, and accordingly the emitter current of the triode Q2 is restrained from becoming smaller, the current flowing through the first input coil is ensured to be stable and unchanged, so that an excitation signal generated by the output coil of the transformer T1 is stable and unchanged, and the monitoring precision of collapse accidents is improved. Compared with the traditional collapse monitoring circuit, the collapse monitoring circuit has the advantages of stable work and high precision.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a circuit diagram of a collapse monitoring circuit according to the present utility model;
FIG. 2 is a circuit diagram of a signal conditioning circuit according to the present utility model;
FIG. 3 is a circuit diagram of a gas monitoring circuit according to the present utility model;
FIG. 4 is a circuit diagram of a temperature monitoring circuit according to the present utility model;
fig. 5 is a circuit diagram of an alarm circuit in the present utility model.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, this embodiment provides an emergency rescue management system, including collapsing monitoring circuit, wireless communication unit and master control unit, collapsing monitoring circuit connects master control unit, master control unit is connected with monitor terminal communication by means of wireless communication unit, collapsing monitoring circuit includes resistance R2, triode Q1, resistance R3, resistance R4, transformer T1, triode Q2, silicon controlled rectifier U1, diode D4 and displacement sensor P1, triode Q1's first output of master control unit is connected through resistance R2 base, triode Q1's projecting pole connects 5V power, triode Q1's collecting electrode connects transformer T1's first input, triode Q1's collecting electrode connects resistance R3's first end, transformer T1's second input connects triode Q2's projecting pole through resistance R4 ground, transformer T1's third input end connects resistance R3's second end, transformer T1's fourth input end connects positive pole Q2, triode Q1's base is connected to ground, transformer T1's first output of first triode Q1's first input end is connected to the first input of silicon controlled rectifier U1, displacement sensor P1's second input end is connected to the second input of the second silicon controlled rectifier U1, displacement sensor P1's second input end is connected to the second positive pole of the second end of the second silicon controlled rectifier P1.
In this embodiment, the collapse monitoring circuit is used for monitoring the occurrence of accidents such as collapse or debris flow in the coal mine production process, and converting the monitored accident signals into electric signals to be sent to the main control unit, and the main control unit sends the accident signals to the monitoring terminal through the wireless communication unit, so that emergency measures are timely made when relevant staff receive the accident signals.
When the coal mine collapses, a pressure signal or a strain signal is added to the displacement sensor P1, and the displacement sensor P1 judges whether collapse accidents occur or not according to the stress. In the collapse monitoring circuit of the embodiment, a vibrating wire type sensor is adopted as a displacement sensor P1, an excitation signal is required to be added into an internal coil of the vibrating wire type sensor when the vibrating wire type sensor works, and the coil generates magnetic force to attract a magnetic wire; when the excitation signal is removed, the coil releases the magnetic string, the magnetic string freely vibrates and generates an induction electric signal in the coil, the induction electric signal is sent to the main control unit, and the main control unit judges the stress according to the magnitude of the induction electric signal, so that whether collapse accidents occur or not is judged.
Specifically, the working principle in the collapse monitoring circuit is as follows: the first output end of the main control unit outputs PWM control signals to the base electrode of the triode Q1, the triode Q1 forms an amplifying circuit for improving the driving capability of the PWM control signals, when the PWM control signals are high level, the triode Q1 is cut off, the input end of the transformer has no voltage, when the PWM control signals are low level, the triode Q1 is conducted, the first input end of the transformer T1 and the second input end of the transformer T1 form a first input end coil, the third input end of the transformer T1 and the fourth input end of the transformer T1 form a second input end coil, at this time, the first input coil of the transformer T1 generates voltage, the resistor R3 and the resistor R4 form a voltage dividing circuit, the voltage at two ends of the resistor R4 is added to the second coil, the base voltage of the triode Q2 is lower than the emitter voltage of the triode Q2, the triode Q2 is conducted, a 5V power supply forms a passage through the triode Q1, the first input coil of the transformer T1 and the triode Q2, the first output end of the transformer T1 and the second output end of the transformer T1 form an output coil, at this time, the output coil of the transformer T1 generates induction voltage, the transformer T1 is a step-up transformer, during operation, the second output end of the main control unit outputs a high-level signal, an electric signal output by the transformer T1 is added to the first end of the displacement sensor P1 after passing through the controllable silicon U1, and the first end of the displacement sensor P1 is an excitation end of the vibrating wire sensor. At this time, when a tower accident occurs, the displacement sensor P1 monitors a stress signal and converts the stress signal into an electric signal to be sent to the main control unit.
Because the environment of coal mine production is complex, in the process of monitoring coal mine collapse, current in a circuit possibly floats, so that an excitation signal of a displacement sensor P1 is unstable, and collapse accident monitoring is inaccurate, therefore, when the output current of a power supply is larger, the current flowing through an emitter of a triode Q2 becomes larger, meanwhile, the partial voltage on a resistor R4 becomes larger, the current of a base of the triode Q2 becomes larger, and the current of the emitter of the triode Q2 is restrained from being larger, namely, the current flowing through a first input coil of a transformer T1 is unchanged;
when the output current of the power supply is smaller, the current flowing through the emitter of the triode Q2 becomes smaller, meanwhile, the voltage division on the resistor R4 becomes smaller, the base current of the triode Q2 also becomes smaller, and accordingly the emitter current of the triode Q2 is restrained from becoming smaller, the current flowing through the first input coil is ensured to be stable and unchanged, so that an excitation signal generated by the output coil of the transformer T1 is stable and unchanged, and the monitoring precision of collapse accidents is improved.
As shown in fig. 2, a signal conditioning circuit is arranged between the second end of the displacement sensor P1 and the first input end of the main control unit in the embodiment, the signal conditioning circuit comprises an operational amplifier U3, a resistor R9 and a resistor R11, the non-inverting input end of the operational amplifier U3 is connected with the second end of the displacement sensor P1, the inverting input end of the operational amplifier U3 is grounded, the output end of the operational amplifier U3 is connected with the non-inverting input end of the operational amplifier U3 through the resistor R9, the output end of the operational amplifier U3 is connected with a 2.5V power supply through the resistor R11, and the output end of the operational amplifier U3 is connected with the first input end of the main control unit.
Because the self-vibration frequency of the vibrating wire sensor is related to the magnitude of the stress, the change of the vibration frequency of the vibrating wire can represent the magnitude of the stress, so that in order to better monitor collapse accidents, the embodiment changes the electric signal output by the displacement sensor P1 into a frequency signal, the operational amplifier U3 forms a zero-crossing comparator, when the electric signal output by the displacement sensor P1 is greater than 0, the operational amplifier U3 outputs a 2.5V high-level signal, and when the electric signal output by the displacement sensor P1 is less than 0, the operational amplifier U3 outputs a 0-level signal.
As shown in fig. 2, the signal conditioning circuit in this embodiment further includes a resistor R7, a resistor R8, an operational amplifier U2, a resistor R6, a capacitor C4, a capacitor C6, and a resistor R10, where the in-phase input end of the operational amplifier U2 is connected to the second end of the displacement sensor P1 through the resistor R8, the anti-phase input end of the operational amplifier U2 is grounded through the resistor R7, the output end of the operational amplifier U2 is connected to the anti-phase input end of the operational amplifier U2 through the resistor R6, the capacitor C4 is connected in parallel to two ends of the resistor R6, the output end of the operational amplifier U2 is connected to the first end of the resistor R10 through the capacitor C6, and the second end of the resistor R10 is connected to the in-phase input end of the operational amplifier U3.
The electrical signal output by the displacement sensor P1 is weak, the operational amplifier U3 cannot normally recognize the electrical signal, and meanwhile, the electrical signal output by the displacement sensor P1 contains a part of interference signals, which can seriously affect the monitoring precision of the circuit, so that a filtering and amplifying circuit is added in the embodiment for amplifying and filtering the electrical signal output by the displacement sensor P1.
The operational amplifier U3 forms an amplifying circuit for amplifying the electric signal output by the displacement sensor P1, and the capacitor C4 forms a filter circuit for filtering high-frequency clutter in the signal. The capacitor C6 and the resistor R10 form a resistance-capacitance coupling circuit for filtering useless direct current signals. The final amplified and filtered electrical signal is sent to a zero-crossing comparator.
As shown in fig. 3, the embodiment further includes a gas monitoring circuit, where the gas monitoring circuit includes a gas sensor P2, a resistor R13, an operational amplifier U4, an operational amplifier U5, a resistor R15, a resistor R14, a resistor R16, a resistor RP1, a resistor R17, a resistor R18, an operational amplifier U6, and a resistor R19, where the power supply end of the gas sensor P2 is connected to a 5V power supply, the output end of the gas sensor P2 is connected to the non-inverting input end of the operational amplifier U4 through the resistor R13, the ground connection of the gas sensor P2 is connected to the ground, the inverting input end of the operational amplifier U4 is connected to the non-inverting input end of the operational amplifier U5 through the resistor R15, the non-inverting input end of the operational amplifier U5 is connected to the sliding end of the resistor RP1, the first end of the resistor RP1 is connected to the 5V power supply, the second end of the resistor RP1 is grounded, the output end of the operational amplifier U4 is connected to the inverting input end of the operational amplifier U6 through the resistor R14, the output end of the operational amplifier U5 is connected to the inverting input end of the operational amplifier U6 through the resistor R16, and the inverting input end of the operational amplifier U6 is connected to the inverting input end of the operational amplifier U6 through the inverting input end of the resistor R6.
Gas is one of natural factors seriously threatening the underground safety production of coal mines, the gas can explode when meeting open fire, the reaction process of the gas instant combustion reaction and the generation of high temperature and high pressure is quick, the instant power is very high, and the formed voltage causes destructive damage to mine production personnel. Thus, there is a need for real-time monitoring of gas content in mines.
In this embodiment, the gas monitoring circuit is configured to monitor a gas concentration signal, and convert the monitored gas concentration signal into an electrical signal and send the electrical signal to the main control unit. When no gas is detected, the bridge is in a balanced state, the circuit output is 0, when the gas signal is detected, the internal resistance of the catalytic element in the gas sensor P2 is changed, the bridge is unbalanced, the operational amplifier U4 and the operational amplifier U5 form a differential circuit, at this time, a differential pressure is formed between the non-inverting input end of the operational amplifier U4 and the inverting input end of the operational amplifier U5, the differential circuit can inhibit common mode interference in the circuit, the operational amplifier U6 forms a second-stage amplifying circuit, and the amplified electric signal is sent to the main control unit.
The resistor R20 and the capacitor C7 form a low-pass filter circuit for filtering high-frequency clutter in the signal, and the capacitor C8 and the resistor R21 form a high-pass filter circuit for filtering noise signals in the signal.
As shown in fig. 4, the embodiment further includes a temperature monitoring circuit, where the temperature monitoring circuit includes a resistor R23, a resistor R28, a thermistor RT, a resistor R29, a resistor R31, a resistor R30, an operational amplifier U7 and a resistor R24, where a first end of the resistor R23 is connected to a 5V power supply, a second end of the resistor R23 is grounded through the thermistor RT, a first end of the resistor R28 is connected to the 5V power supply, a second end of the resistor R28 is grounded through the resistor R29, a non-inverting input end of the operational amplifier U7 is connected to the second end of the resistor R23 through the resistor R31, an inverting input end of the operational amplifier U7 is connected to the second end of the resistor R28 through the resistor R30, and an output end of the operational amplifier U7 is connected to the inverting input end of the operational amplifier U7 through the resistor R24.
In the production process of the coal mine, a plurality of miners exist in the mine, the ventilation condition in the mine is poor, heat is generated by the operation of equipment, the temperature in the mine is high, if ventilation management is not carried out, workers in the mine are easy to syncope due to the fact that the temperature is too high and oxygen deficiency is carried out, and therefore the temperature monitoring of the mine environment is particularly important.
The resistor R23, the resistor R28, the thermistor RT and the resistor R29 form a bridge, the bridge is in a balanced state at normal temperature, the input end of the operational amplifier U7 is 0, therefore, the operational amplifier output is 0, when the temperature in a mine is too high, the input end of the operational amplifier U7 generates a voltage difference, the operational amplifier U7 forms a differential amplifying circuit, the operational amplifier U7 outputs a voltage signal to the third input end of the main control unit, the temperature is in direct proportion to the voltage, the larger the electric signal received by the main control unit indicates that the temperature in the mine is higher, when the temperature in the mine is high, the main control unit simultaneously indicates that the ventilation system of the mine possibly fails, and the main control unit sends the signal to the monitoring terminal so as to take corresponding measures.
As shown in fig. 5, the embodiment further includes an alarm circuit, where the alarm circuit includes a resistor R25, an optocoupler U8, a resistor R27, a resistor R26, a switching tube Q3, a resistor R22, and an alarm B1, where a first input end of the optocoupler U8 is connected to a 5V power supply, a second input end of the optocoupler U8 is connected to a third output end of the main control unit through the resistor R25, a first output end of the optocoupler U8 is connected to a 5V power supply through the resistor R27, a second output end of the optocoupler U8 is connected to a control end of the switching tube Q3 through the resistor R26, a first end of the switching tube Q3 is connected to a 5V power supply through the resistor R22, a second end of the switching tube Q3 is connected to a first end of the alarm B1, and a second end of the alarm B1 is grounded.
In this embodiment, when the main control unit monitors collapse, gas or temperature alarm signals, a safety accident may not occur immediately, but the underground staff should be notified immediately to evacuate at this time, so as to avoid the safety accident.
Specifically, the working principle of the alarm circuit is as follows: when no accident occurs, the third output end of the main control unit outputs a high-level signal, the optical coupler U8 is cut off, the switching tube Q3 is cut off, and the alarm B1 does not work; when the accident is detected, the third output end of the main control unit outputs a low-level signal, the optical coupler U8 is conducted, the optical coupler U8 outputs a high-level signal, the switching tube Q3 is also conducted, and the alarm B1 is electrified to send out an alarm signal, so that an early warning effect is achieved on underground workers.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (6)
1. The emergency rescue management system is characterized by comprising a collapse monitoring circuit, a wireless communication unit and a main control unit, wherein the collapse monitoring circuit is connected with the main control unit, the main control unit is in communication connection with a monitoring terminal by means of the wireless communication unit, the collapse monitoring circuit comprises a resistor R2, a triode Q1, a resistor R3, a resistor R4, a transformer T1, a triode Q2, a silicon controlled rectifier U1, a diode D4 and a displacement sensor P1,
the base of triode Q1 passes through resistance R2 connects the first output of main control unit, triode Q1's projecting pole is connected 5V power, triode Q1's collecting electrode is connected the first input of transformer T1, triode Q1's collecting electrode is connected resistance R3's first end, resistance R3's second end passes through resistance R4 ground connection, transformer T1's second input is connected triode Q2's projecting pole, transformer T1's third input is connected resistance R3's second end, transformer T1's fourth input is connected triode Q2's base, triode Q2's collecting electrode ground, transformer T1's first output is connected silicon controlled rectifier U1's positive pole, silicon controlled rectifier U1's negative pole is connected displacement sensor P1's first end, silicon controlled rectifier U1's control end is connected diode D4 the second end of resistor R3, the second input of transformer T1's second end is connected the displacement sensor P1.
2. The emergency rescue management system according to claim 1, wherein a signal conditioning circuit is arranged between the second end of the displacement sensor P1 and the first input end of the main control unit, the signal conditioning circuit comprises an operational amplifier U3, a resistor R9 and a resistor R11, the non-inverting input end of the operational amplifier U3 is connected with the second end of the displacement sensor P1, the inverting input end of the operational amplifier U3 is grounded, the output end of the operational amplifier U3 is connected with the non-inverting input end of the operational amplifier U3 through the resistor R9, the output end of the operational amplifier U3 is connected with a 2.5V power supply through the resistor R11, and the output end of the operational amplifier U3 is connected with the first input end of the main control unit.
3. The emergency rescue management system of claim 2, wherein the signal conditioning circuit further comprises a resistor R7, a resistor R8, an operational amplifier U2, a resistor R6, a capacitor C4, a capacitor C6 and a resistor R10, wherein the non-inverting input end of the operational amplifier U2 is connected with the second end of the displacement sensor P1 through the resistor R8, the inverting input end of the operational amplifier U2 is grounded through the resistor R7, the output end of the operational amplifier U2 is connected with the inverting input end of the operational amplifier U2 through the resistor R6, the capacitor C4 is connected with two ends of the resistor R6 in parallel, the output end of the operational amplifier U2 is connected with the first end of the resistor R10 through the capacitor C6, and the second end of the resistor R10 is connected with the non-inverting input end of the operational amplifier U3.
4. The emergency rescue management system according to claim 1, further comprising a gas monitoring circuit, wherein the gas monitoring circuit comprises a gas sensor P2, a resistor R13, an operational amplifier U4, an operational amplifier U5, a resistor R15, a resistor R14, a resistor R16, a resistor RP1, a resistor R17, a resistor R18, an operational amplifier U6 and a resistor R19, a power supply end of the gas sensor P2 is connected with a 5V power supply, an output end of the gas sensor P2 is connected with an in-phase input end of the operational amplifier U4 through the resistor R13, a ground terminal of the gas sensor P2 is connected with an in-phase input end of the operational amplifier U4 through the resistor R15, an in-phase input end of the operational amplifier U5 is connected with a sliding end of the resistor RP1, a first end of the resistor RP1 is connected with a 5V power supply, an output end of the operational amplifier U4 is connected with an in-phase end of the resistor R14, an output end of the operational amplifier U6 is connected with an in-phase end of the operational amplifier U6 through the inverting end of the resistor R15, an output end of the operational amplifier U6 is connected with an output end of the operational amplifier U6 through the inverting end of the resistor R6.
5. The emergency rescue management system of claim 1, further comprising a temperature monitoring circuit, wherein the temperature monitoring circuit comprises a resistor R23, a resistor R28, a thermistor RT, a resistor R29, a resistor R31, a resistor R30, an operational amplifier U7 and a resistor R24, a first end of the resistor R23 is connected with a 5V power supply, a second end of the resistor R23 is grounded through the thermistor RT, a first end of the resistor R28 is connected with a 5V power supply, a second end of the resistor R28 is grounded through the resistor R29, a non-inverting input end of the operational amplifier U7 is connected with a second end of the resistor R23 through the resistor R31, an inverting input end of the operational amplifier U7 is connected with a second end of the resistor R28 through the resistor R30, an output end of the operational amplifier U7 is connected with an inverting input end of the operational amplifier U7 through the resistor R24, and an output end of the operational amplifier U7 is connected with a third input end of the master control unit.
6. The emergency rescue management system of claim 1, further comprising an alarm circuit, wherein the alarm circuit comprises a resistor R25, an optocoupler U8, a resistor R27, a resistor R26, a switching tube Q3, a resistor R22 and an alarm B1, a first input end of the optocoupler U8 is connected with a 5V power supply, a second input end of the optocoupler U8 is connected with a third output end of the main control unit through the resistor R25, a first output end of the optocoupler U8 is connected with the 5V power supply through the resistor R27, a second output end of the optocoupler U8 is connected with a control end of the switching tube Q3 through the resistor R26, a first end of the switching tube Q3 is connected with the 5V power supply through the resistor R22, a second end of the switching tube Q3 is connected with a first end of the alarm B1, and a second end of the alarm B1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321952788.7U CN220248159U (en) | 2023-07-24 | 2023-07-24 | Emergency rescue management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321952788.7U CN220248159U (en) | 2023-07-24 | 2023-07-24 | Emergency rescue management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248159U true CN220248159U (en) | 2023-12-26 |
Family
ID=89268668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321952788.7U Active CN220248159U (en) | 2023-07-24 | 2023-07-24 | Emergency rescue management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248159U (en) |
-
2023
- 2023-07-24 CN CN202321952788.7U patent/CN220248159U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205508103U (en) | Wireless high formwork intelligent data acquisition system | |
| CN104062924B (en) | Method for early warning, system and air conditioner | |
| CN104964716A (en) | Fluid flow detecting device facilitating selection of position of monitoring point | |
| CN206892594U (en) | A kind of Internet of Things intellectuality cleaner electrostatic monitoring system and control system | |
| CN107290630A (en) | Detector for electric fire protection circuit | |
| CN220248159U (en) | Emergency rescue management system | |
| CN208888992U (en) | A kind of gas detection alarm device based on wireless cloud | |
| CN206177772U (en) | Boiler and air filtration system on -line monitoring device thereof | |
| CN203600656U (en) | Fault monitoring system of hydraulic system and hydraulic machine | |
| CN103646489B (en) | Fire alarm installation | |
| CN204961359U (en) | Colliery ventilation blower monitored control system based on zigBee network | |
| CN208885546U (en) | A kind of big-diameter pipeline conveying pump group monitoring system | |
| CN110412427A (en) | A kind of low-voltage power fault detection positioning system and fault detection method | |
| CN2890585Y (en) | Ultrasonic automatic pipe leakage detector | |
| CN220474107U (en) | Emergency rescue command dispatching management system | |
| CN208697485U (en) | A kind of intelligent inspection robot status alert system | |
| CN209637822U (en) | Oxygen concentration prior-warning device for mine | |
| CN218181645U (en) | Trigger type gas monitoring and early warning circuit | |
| CN217562111U (en) | Tunnel construction safety early warning system | |
| CN217333136U (en) | Tunnel safety monitoring system | |
| CN204745462U (en) | Fire control pump performance monitoring devices | |
| CN204694763U (en) | A kind of current monitoring circuit of vibro-pickup | |
| CN203786875U (en) | Machine fault intelligent early warning system | |
| CN206146570U (en) | Pressure transmitter | |
| CN219328873U (en) | Motor state monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |