CN208208067U - A kind of coal mine downhole safety early warning system - Google Patents

Abstract

The utility model discloses an underground coal mine safety early warning system, which comprises an underground base station and a ground base station. The ground base station includes a network module and a wireless transmission module. Compared with the prior art, the utility model monitors the temperature in the well in real time through the temperature sensor, the humidity sensor monitors the humidity in the well, and the combustible gas sensor detects the combustible gas concentration in the well. When these three kinds of data exceed the standard, the single-chip microcomputer automatically controls the operation of the fan, and at the same time sends out an audible and visual alarm to remind the underground staff to pay attention. Safety monitoring, reducing safety hazards, has the value of popularization and application.

Description

A Coal Mine Underground Safety Early Warning System

technical field

The utility model relates to a coal mine underground safety auxiliary device, in particular to an underground coal mine safety early warning system.

Background technique

Coal mines are areas where human beings exploit coal resources in coal-rich mining areas, and are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far away from the surface, it is generally selected to excavate the coal by digging the roadway underground, which is an underground coal mine. When the distance between the coal seam and the surface is very short, it is generally chosen to directly strip the surface soil layer to excavate coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. In the prior art, for underground coal mines, combustible gas is easily generated underground, thus causing potential safety hazards. Therefore, there is room for improvement.

Utility model content

The purpose of the utility model is to provide a coal mine underground safety early warning system in order to solve the above problems.

The utility model realizes above-mentioned purpose through following technical scheme:

The utility model includes an underground base station and a ground base station. The underground base station includes a temperature sensor, a humidity sensor, a combustible gas sensor, a single-chip microcomputer, a fan control switch, an audible and visual alarm, a fan, and a limited transmission module. The ground base station includes a network module and Wireless transmission module, the signal output ends of the temperature sensor, the humidity sensor and the combustible gas sensor are connected to the signal input end of the single-chip microcomputer, and the alarm signal output end of the single-chip microcomputer is connected to the sound and light alarm and the The fan control switch is connected, the fan control switch is connected to the power control terminal of the fan, the signal output end of the single-chip microcomputer is connected to the network module in the ground base station through the wired transmission module, and the network module is connected to the Wireless transmission module connection.

Further, the combustible gas sensor is composed of a first potentiometer, a second potentiometer, a first resistor to a third resistor, a gas detection head, a light emitting diode and a time base integrated chip. The first end of the first potentiometer is simultaneously connected with the positive pole of the power supply, the sliding end of the first potentiometer, the first end of the gas detection head, the first end of the inner heating end of the gas detection head, the sixth pin of the time base integrated chip, the first The first end of the three resistors is connected to the fourth and eighth pins of the time base integrated chip, the second end of the first potentiometer is connected to the first end of the first resistor, and the second end of the first resistor is connected to the negative pole of the power supply at the same time. , the second end of the heating end in the gas detection head, the first end of the second potentiometer, the sliding end of the second potentiometer, the negative pole of the light-emitting diode and the first pin of the time base integrated chip are connected, the first end of the second potentiometer The two ends are connected with the first end of the second resistor, the second end of the second resistor is connected with the second end of the gas detection head and the second pin of the time base integrated chip at the same time, and the anode of the light-emitting diode is connected with the third resistor at the same time. The second end is connected to the seventh pin of the time base integrated chip, and the third pin of the time base integrated chip is connected to the single-chip microcomputer.

Further, the sound and light alarm and the fan control switch are composed of a fourth resistor, a fifth resistor, a light emitting diode, a relay, a diode, a voltage regulator tube, a capacitor and a loudspeaker, and the control switch of the relay is the control switch of the fan. switch. The first terminal of the fourth resistor is connected to the positive pole of the power supply, the first terminal of the relay, the negative pole of the diode and the first terminal of the fifth resistor at the same time, the second terminal of the first resistor is connected to the negative pole of the light-emitting diode, and the light-emitting diode The positive pole is connected to the negative pole of the power supply, the second terminal of the relay, the positive pole of the diode, the positive pole of the voltage regulator tube, the first terminal of the capacitor and the first terminal of the speaker, and the second terminal of the fifth resistor is connected to the negative pole of the voltage regulator tube, The second end of the capacitor is connected to the second end of the speaker.

The beneficial effects of the utility model are:

The utility model is an underground coal mine safety early warning system. Compared with the prior art, the utility model monitors the temperature in the mine in real time through a temperature sensor, the humidity sensor monitors the humidity in the mine, and the combustible gas sensor detects the combustible gas concentration in the mine. When these three data exceed the standard, the single-chip microcomputer automatically controls the operation of the fan, and at the same time sends out an audible and visual alarm to remind the underground staff to pay attention. At the same time, the wired signal is transmitted to the ground base station, and the ground base station sends an alarm to the cloud monitoring center through the network, which is convenient for safety monitoring. , reduce potential safety hazards, and have the value of popularization and application.

Description of drawings

Fig. 1 is a structural principle block diagram of the utility model;

Fig. 2 is the circuit diagram of the combustible gas sensor of the present utility model;

Fig. 3 is the circuit diagram of the sound and light alarm device and fan control switch of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1: the utility model includes an underground base station and a ground base station. The underground base station includes a temperature sensor, a humidity sensor, a combustible gas sensor, a single-chip microcomputer, a fan control switch, an audible and visual alarm, a fan, and a limited transmission module. The ground base station includes a network module and a wireless transmission module, the signal output terminals of the temperature sensor, the humidity sensor and the combustible gas sensor are connected to the signal input terminal of the single-chip microcomputer, and the alarm signal output terminal of the single-chip microcomputer is connected to the The sound and light alarm is connected to the fan control switch, the fan control switch is connected to the power control terminal of the fan, and the signal output terminal of the single-chip microcomputer is connected to the network module in the ground base station through the wired transmission module. The network module is connected to the wireless transmission module.

Further, the combustible gas sensor is composed of a first potentiometer RP1, a second potentiometer RP2, a first resistor R1 to a third resistor R3, a gas detection head Q, a light emitting diode LED1 and a time base integrated chip IC. The first end of the first potentiometer RP1 is simultaneously connected with the positive pole of the power supply, the sliding end of the first potentiometer RP1, the first end of the gas detection head Q, the first end of the inner heating end of the gas detection head Q, and the first end of the time base integrated chip IC. Six pins, the first end of the third resistor R3, the fourth and eighth pins of the time base integrated chip IC are connected, the second end of the first potentiometer RP1 is connected with the first end of the first resistor R1, the first The second end of the resistor R1 is simultaneously integrated with the negative pole of the power supply, the second end of the inner heating end of the gas detection head Q, the first end of the second potentiometer RP2, the sliding end of the second potentiometer RP2, the negative pole of the light-emitting diode LED and the time base The first pin of the chip IC is connected, the second end of the second potentiometer RP2 is connected to the first end of the second resistor R2, and the second end of the second resistor R2 is simultaneously connected to the second end of the gas detection head Q and the time base The second pin of the integrated chip IC is connected, and the anode of the light-emitting diode LED1 is connected with the second end of the third resistor R3 and the seventh pin of the time base integrated chip IC at the same time, and the third pin of the time base integrated chip IC is connected with all The above MCU connection.

Further, the sound and light alarm and the fan control switch are composed of a fourth resistor R4, a fifth resistor R5, a light emitting diode LED2, a relay K, a diode D, a voltage regulator tube DW, a capacitor C and a speaker B. The relay The control switch of K is the fan control switch. The first end of the fourth resistor R4 is simultaneously connected to the positive pole of the power supply, the first end of the relay K, the negative pole of the diode D, and the first end of the fifth resistor R5, and the second end of the first resistor R1 is connected to the light emitting diode LED2. Negative connection, the positive pole of the light-emitting diode LED2 is connected to the negative pole of the power supply, the second terminal of the relay K, the positive pole of the diode D, the positive pole of the voltage regulator DW, the first terminal of the capacitor C and the first terminal of the speaker B, and the fifth resistor The second terminal of R5 is simultaneously connected with the negative pole of the regulator tube DW, the second terminal of the capacitor C and the second terminal of the speaker B.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. a kind of coal mine downhole safety early warning system, it is characterised in that: including underground base station and ground base station, the underground base station Including temperature sensor, humidity sensor, combustible gas sensor, single-chip microcontroller, air-blower control switch, combined aural and visual alarm, blower, Definite transmission module, the ground base station include network module and wireless transport module, and the temperature sensor, the humidity pass The signal output end of sensor and the combustible gas sensor is connect with the signal input part of the single-chip microcontroller, the single-chip microcontroller Alarm signal output ends and the combined aural and visual alarm and the air-blower control switch connect, and the air-blower control switch is connected to wind The signal output end of the power control terminal of machine, the single-chip microcontroller passes through the net in the wire transmission module and the ground base station The connection of network module, the network module are connect with the wireless transport module.

2. coal mine downhole safety early warning system according to claim 1, it is characterised in that: the combustible gas sensor by First potentiometer, the second potentiometer, first resistor to 3rd resistor, coal gas detection head, light emitting diode and Shi Ji integrated chip It constitutes；The first end of first potentiometer simultaneously with positive pole, the sliding end of the first potentiometer, coal gas detection head first end, The first end of fire end in coal gas detection head, when the 6th pin of base integrated chip, 3rd resistor first end, when basis set Cheng Xin The 4th of piece connects with the 8th pin, and the first end of the second end of the first potentiometer and first resistor connects, and the of first resistor Two ends simultaneously with the second end, the first end of the second potentiometer of fire end in power cathode, coal gas detection head, the second potentiometer Sliding end, the cathode of light emitting diode are connected with the first pin of Shi Ji integrated chip, the second end of the second potentiometer and second The first end of resistance connects, the second end of second resistance simultaneously with the second end of coal gas detection head and Shi Ji integrated chip second The anode of pin connection, light emitting diode is connect with the 7th pin of the second end of 3rd resistor and Shi Ji integrated chip simultaneously, When base integrated chip third pin connect with the single-chip microcontroller.

3. coal mine downhole safety early warning system according to claim 1, it is characterised in that: the combined aural and visual alarm and described Air-blower control is switched by the 4th resistance, the 5th resistance, light emitting diode, relay, diode, voltage-stabiliser tube, capacitor and loudspeaker Composition, the control switch of the relay are that the air-blower control switchs, the first end of the 4th resistance and meanwhile with power supply just The first end connection of pole, the first end of relay, the cathode of diode and the 5th resistance, the second end of first resistor and luminous two The cathode of pole pipe connects, the anode of light emitting diode simultaneously with power cathode, the second end of relay, diode it is positive, steady The anode of pressure pipe, the first end of capacitor are connected with the first end of loudspeaker, and the second end of the 5th resistance is negative with voltage-stabiliser tube simultaneously Pole, the second end of capacitor are connected with the second end of loudspeaker.