Coal mine underground pipeline monitoring system
By installing monitoring substations and sensors with MESH wireless communication modules in underground coal mine pipelines, the problem of monitoring accuracy caused by inconvenient wiring was solved, enabling real-time monitoring and safety assurance of underground coal mine pipelines, and improving monitoring coverage and system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOYUN COAL MINE JINING MINING IND GRP CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
Due to the inconvenience of wiring and the limited number of sensors deployed in underground coal mine pipelines, the monitoring accuracy is difficult to guarantee, some pipelines are missed in inspection, and traditional manual inspection is inefficient and slow to respond, making it difficult to detect problems such as air leakage and water leakage in a timely manner.
The monitoring substation using MESH wireless communication modules forms a MESH network by setting up monitoring substations in underground pipelines in coal mines. Combined with pressure and flow sensors, it enables real-time monitoring of the pipelines, and uses mining-grade explosion-proof and intrinsically safe power supply modules to ensure the electrical safety of the system.
It enables precise monitoring of underground pipelines in coal mines, improves coverage, reduces wiring difficulty and cost, reduces the frequency of manual inspections, promptly detects pipeline abnormalities, and ensures safe production.
Smart Images
Figure CN224162454U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal mine underground monitoring technology, specifically relating to a coal mine underground pipeline monitoring system. Background Technology
[0002] Underground pipelines in coal mines are used to transport media such as production water, compressed air, and emulsions underground, and are an important component of ensuring safe production in coal mines. However, due to the harsh natural conditions underground in coal mines, various pipelines are subject to long-term erosion by water seepage, roadway deformation, and the effects of mining-induced pressure, resulting in leaks and spills. This leads to insufficient pressure in the supply of air, water, or liquids at working locations such as coal faces and tunneling faces, affecting underground coal mine production and causing economic losses to coal mining enterprises.
[0003] Traditional manual inspection methods in coal mines are clearly insufficient to meet the needs of digital mines. First, they are inefficient, increasing the workload for mine maintenance personnel. Second, they are often delayed, with leaks of air, water, or liquid typically only detected after some time has passed, making it difficult to detect emergencies in a timely manner. Third, due to long pipelines and the subjective factors of inspection personnel, missed inspections are highly likely.
[0004] The modern method of monitoring underground pipelines by deploying sensors meets the needs of digital mines and has solved the problem of underground pipeline monitoring to a certain extent. However, due to the inconvenience of underground wiring in coal mines, the number of sensors deployed is limited, so the monitoring accuracy of the pipelines is difficult to guarantee, and there are still some pipelines that are missed in detection.
[0005] This is a shortcoming of the existing technology. Therefore, it is very necessary to provide a coal mine underground pipeline monitoring system to address the above-mentioned deficiencies in the existing technology. Summary of the Invention
[0006] In view of the above-mentioned defects in the existing technology, due to the inconvenience of underground wiring in coal mines, the number of sensors deployed is limited, and therefore the monitoring accuracy of pipelines is difficult to guarantee, and there is still a problem of some pipelines being missed in detection, this utility model provides an underground pipeline monitoring system for coal mines to solve the above-mentioned technical problems.
[0007] This utility model provides a coal mine underground pipeline monitoring system, including coal mine underground pipelines and a monitoring master station;
[0008] Underground pipelines in coal mines are divided into main pipelines and branch pipelines at various levels;
[0009] At least one monitoring station is installed on the main pipeline and each level of branch pipeline;
[0010] The monitoring substation includes a control module, a power module, a MESH wireless communication module, and monitoring sensors;
[0011] The control module, power module, MESH wireless communication module, and monitoring sensors of the same monitoring substation are connected, and the power module is also connected to the MESH wireless communication module.
[0012] The MESH wireless communication modules of different monitoring substations form a MESH network;
[0013] In this MESH network, at least one monitoring substation is connected to the main monitoring station via a MESH wireless communication module. This solution achieves comprehensive monitoring of underground coal mine pipelines by dividing the main pipeline into branch pipelines at various levels and setting up at least one monitoring substation on each pipeline segment. Furthermore, each monitoring substation can operate independently and form a network through the MESH wireless communication module, improving the reliability and flexibility of the monitoring system.
[0014] Furthermore, the underground pipelines in coal mines include water supply pipelines, liquid supply pipelines, and air supply pipelines. In this preferred technical solution, the types of underground pipelines in coal mines are defined as water supply pipelines, liquid supply pipelines, and air supply pipelines, enabling the monitoring system to perform specialized monitoring of pipelines containing different media.
[0015] Furthermore, the monitoring sensors include pressure sensors and flow sensors. In this preferred technical solution, the pressure and flow sensors can monitor changes in pressure and flow in the pipeline in real time, promptly detect abnormalities in the pipeline, such as leaks, and provide assurance for safe production in coal mines.
[0016] Furthermore, the power module includes a mining power interface, a voltage conversion unit, a charging and discharging unit, and a battery;
[0017] The mine power interface is connected to the input of the voltage conversion unit, the output of the voltage conversion unit is connected to the charging and discharging unit, and the charging and discharging unit is connected to the battery.
[0018] The charging and discharging unit is also connected to an output interface, which is connected to the control module and the MESH wireless communication module. In this preferred technical solution, the power module enables the monitoring substation to flexibly connect to the mine's power supply, and through voltage conversion, the charging and discharging unit, and the battery, it achieves a stable power supply to the monitoring substation. This not only improves the reliability of the monitoring substation but also reduces the requirements for underground wiring in the coal mine, thereby reducing wiring costs and difficulties.
[0019] Furthermore, the power conversion unit includes a charging subunit, a discharging subunit, and a voltage detection subunit. In this preferred embodiment, the charging subunit enables safe and efficient charging of the battery, ensuring that the battery always maintains sufficient charge; the discharging subunit can release battery energy reasonably when needed, ensuring a stable power supply to the monitoring substation; the voltage detection subunit can monitor the battery voltage in real time, ensuring that the charging and discharging process of the battery is carried out within a safe range, preventing damage to the battery from overcharging, over-discharging, or other situations.
[0020] Furthermore, the mine power interface is connected to a 127V AC power supply for mining; the battery is a nickel-metal hydride dry cell battery; and the output interface is a 5V DC voltage interface. In this preferred technical solution, the mine power interface is connected to a 127V AC power supply for mining, ensuring that the monitoring substation can obtain sufficient power supply while complying with the electrical safety standards for underground coal mines; the use of nickel-metal hydride dry cell batteries as the storage battery provides high energy density, long life, and environmental friendliness, providing a stable and reliable power supply for the monitoring substation; the output interface is a 5V DC voltage interface, providing a stable power input for the control module and the MESH wireless communication module, ensuring the normal operation of each module.
[0021] Furthermore, the monitoring substation also includes a network module;
[0022] The network module is connected to the control module;
[0023] The network module of the monitoring substation closest to the main monitoring station connects to the main monitoring station via wired industrial Ethernet or wireless communication. This preferred technical solution not only improves the reliability and stability of data transmission but also reduces the requirements for underground cabling in coal mines, thereby reducing cabling costs and complexity.
[0024] Furthermore, the MESH wireless communication module of the monitoring substation closest to the main monitoring station in the MESH network is connected to the main monitoring station. This preferred technical solution not only improves data transmission efficiency but also reduces data transmission latency and packet loss rate, thereby ensuring the accuracy and real-time performance of the monitoring data.
[0025] Furthermore, branch valves are installed on the branch pipelines at each level;
[0026] The branch valves are connected to the control modules of the monitoring substations on the corresponding branch pipelines. In this preferred technical solution, by setting branch valves on branch pipelines at each level and connecting them to the control modules of the monitoring substations on the corresponding branch pipelines, remote control and regulation of the pipelines can be achieved.
[0027] Furthermore, the power module adopts a mining-grade explosion-proof and intrinsically safe power module. In this preferred technical solution, the use of a mining-grade explosion-proof and intrinsically safe power module ensures the electrical safety of the monitoring station in the harsh environment of underground coal mines, preventing safety accidents caused by electrical faults.
[0028] The beneficial effects of this utility model are as follows:
[0029] The coal mine underground pipeline monitoring system provided by this utility model avoids the inconvenience of laying wired communication cables by deploying monitoring substations equipped with MESH wireless communication modules, thereby achieving accurate monitoring of coal mine underground pipelines and improving the monitoring coverage of various underground pipelines.
[0030] Furthermore, the design principle of this utility model is reliable, the structure is simple, and it has a very wide range of application prospects.
[0031] It is evident that this utility model has substantial features and progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of a coal mine underground pipeline monitoring system according to Embodiment 1 of this utility model.
[0034] Figure 2 This is a schematic diagram of the monitoring of the main pipeline and branch pipelines at each level in the underground pipeline monitoring system of a coal mine according to Embodiment 2 of this utility model.
[0035] Figure 3 This is a schematic diagram of the MESH network topology of the coal mine underground pipeline monitoring system according to Embodiment 2 of this utility model.
[0036] Figure 4 This is a schematic diagram of the power module of the monitoring substation in Embodiment 2 of this utility model.
[0037] Figure 5 This is a circuit diagram of the power supply module of the monitoring substation in Embodiment 2 of this utility model.
[0038] Explanation of main figure symbols
[0039] 1. Main water supply line; 1.1 First water supply branch line; 1.2 Second water supply branch line; 2. Main liquid supply line; 2.1 First liquid supply branch line; 2.2 Second liquid supply branch line; 3. Main air supply line; 3.1 First air supply branch line; 3.2 Second air supply branch line; 4.1 First monitoring substation; 4.2 Second monitoring substation; 4.3 Third monitoring substation; 4.4 Fourth monitoring substation; 4.5 Fifth monitoring substation; 4.6 Sixth monitoring substation; 4.7 Seventh monitoring substation; 4.8 Eighth monitoring substation; 4.9 Ninth monitoring substation; 5. Monitoring master station; 6. Control module; 7. Power supply module; 7.1 Voltage conversion unit; 7.2 Charging and discharging unit; 7.3 Output interface; VAC, mine power interface; BT, battery; 8. MESH wireless communication module; 9. Monitoring sensor. Detailed Implementation
[0040] The coal mine underground pipeline monitoring system will be described in detail below, providing a more comprehensive overview of various embodiments of this disclosure. This disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of this disclosure to the specific embodiments disclosed herein, but rather this disclosure should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of this disclosure.
[0041] For example, the underground pipeline system in a coal mine is responsible for transporting key media such as water, compressed air, and emulsions required for production underground, and is an indispensable link in ensuring the safe and smooth operation of coal mines. However, the harsh environment underground in coal mines, such as continuous water erosion, changes in roadway structure, and pressure fluctuations caused by mining, often leads to pipeline leakage, which in turn affects the air, water, and fluid supply pressure of key working faces such as coal mining areas and tunneling fronts, causing disruption to normal coal mine production and even economic losses.
[0042] Traditional manual inspection methods in coal mines are proving inadequate to meet the urgent needs of digital mines. Their shortcomings include: firstly, low inspection efficiency, significantly increasing the workload of maintenance personnel; secondly, delayed response times, often only being discovered after leaks have persisted for some time, making rapid response to emergencies difficult; and thirdly, the vast and complex pipeline network, coupled with subjective judgment differences among inspectors, easily leads to overlooking certain pipelines. To adapt to the development trend of digital mines, modern monitoring of underground pipelines is achieved by installing sensors, which alleviates the challenges of underground pipeline monitoring to some extent. However, due to limitations in underground wiring conditions, the number of sensors that can be deployed is restricted, making it difficult to guarantee monitoring accuracy, and some pipelines remain in monitoring blind spots.
[0043] To address the aforementioned issues, this embodiment provides a coal mine underground pipeline monitoring system. By deploying monitoring substations equipped with MESH wireless communication modules, the inconvenience of laying wired communication cables is avoided, enabling precise monitoring of coal mine underground pipelines.
[0044] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0045] Please see Figure 1 The diagram shown is a schematic of a coal mine underground pipeline monitoring system in a specific embodiment. The system includes coal mine underground pipelines and a monitoring master station 5.
[0046] Underground pipelines in coal mines are divided into main pipelines and branch pipelines at various levels;
[0047] At least one monitoring station 4 is installed on the main pipeline and each level of branch pipeline;
[0048] The monitoring substation 4 includes a control module 6, a power supply module 7, a MESH wireless communication module 8, and monitoring sensors 9;
[0049] The control module of the same monitoring substation 4 is connected to the power module 7, the MESH wireless communication module 8 and the monitoring sensor 9. The power module is also connected to the MESH wireless communication module 8.
[0050] The MESH wireless communication modules 8 of different monitoring substations 4 form a MESH network;
[0051] At least one monitoring substation 4 in the MESH network is connected to the monitoring master station 5 through the MESH wireless communication module 8.
[0052] In this embodiment, by dividing the main pipeline and branch pipelines at each level, and setting up at least one monitoring substation on each pipeline section, real-time monitoring of the underground pipelines in the coal mine is achieved, which not only improves monitoring efficiency, but also reduces the frequency and difficulty of manual inspections, reduces the workload of maintenance personnel, and because the monitoring substation has independent data acquisition and transmission functions, even if some pipelines have problems, it will not affect the normal operation of the entire system.
[0053] Furthermore, as a refinement and extension of the specific implementation of the above embodiments, in order to fully illustrate the specific implementation process in this embodiment, another coal mine underground pipeline monitoring system is provided, which includes coal mine underground pipelines and monitoring master station 5;
[0054] like Figure 2 As shown, underground pipelines in coal mines are divided into main pipelines and branch pipelines at various levels; for example, water supply main pipeline 1, first water supply branch pipeline 1.1 and second water supply branch pipeline 1.2; liquid supply main pipeline 2, first liquid supply branch pipeline 2.1 and second liquid supply branch pipeline 2.2; air supply main pipeline 3, first air supply branch pipeline 3.1 and second air supply branch pipeline 3.2;
[0055] Each main pipeline and its branch pipelines at all levels is equipped with at least one monitoring station 4; the main water supply pipeline 1 is equipped with a first monitoring station 4.1, the first water supply branch pipeline 1.1 is equipped with a second monitoring station 4.2, the second water supply branch pipeline 1.2 is equipped with a third monitoring station 4.3, the main liquid supply pipeline 2 is equipped with a fourth monitoring station 4.4, the first liquid supply branch pipeline 2.1 is equipped with a fifth monitoring station 4.5, the second liquid supply branch pipeline 2.2 is equipped with a sixth monitoring station 4.6, the main air supply pipeline 3 is equipped with a seventh monitoring station 4.7, the first air supply branch pipeline 3.1 is equipped with an eighth monitoring station 4.8, and the second air supply branch pipeline 3.2 is equipped with a ninth monitoring station 4.9;
[0056] Monitoring substation 4 includes a control module 6, a power supply module 7, a MESH wireless communication module 8, and a monitoring sensor 9; the power supply module 7 adopts a mining-grade explosion-proof and intrinsically safe power supply module.
[0057] like Figure 1 As shown, the control module 6 of the same monitoring substation 4 is connected to the power module 7, the MESH wireless communication module 8 and the monitoring sensor 9. The power module 7 is also connected to the MESH wireless communication module 8.
[0058] Nine monitoring substations 4 form a network through their own MESH wireless communication modules 8, as follows: Figure 3 The MESH network shown;
[0059] The ninth monitoring substation 4.9, which is closest to the monitoring master station 5 in the MESH network, is connected to the monitoring master station 5 through the MESH wireless communication module 8.
[0060] It should be noted that monitoring substation 4 also includes a network module;
[0061] The network module is connected to control module 7;
[0062] The network module of the ninth monitoring substation 4.9, which is closest to the monitoring master station 5, is connected to the monitoring master station 5 via wired industrial Ethernet or wireless communication, while the network modules of the other eight monitoring substations 4 are not used.
[0063] In actual use, since the location of monitoring substation 4 closest to the main monitoring station 5 after MESH networking is uncertain, each monitoring substation 4 is equipped with a network module.
[0064] like Figure 4 As shown, the power module 7 includes a mining power interface VAC, a voltage conversion unit 7.1, a charging and discharging unit 7.2, and a storage battery BT; the storage battery BT is a nickel-metal hydride dry cell battery; the mining power interface VAC is connected to a mining 127V AC power supply; the mining 127V AC power supply can be a mining 127V lighting power supply or a mining 127V integrated protection device power supply;
[0065] The mining power interface VAC is connected to the input of voltage conversion unit 7.1, the output of voltage conversion unit 7.1 is connected to charging and discharging unit 7.2, and charging and discharging unit 7.2 is connected to battery BT;
[0066] The charging and discharging unit 7.2 is also connected to an output interface VO, which is connected to the control module 6 and the MESH wireless communication module 8. The output interface VO is a 5V DC voltage interface, which supplies power to the control module 6 and the MESH wireless communication module 8.
[0067] In one embodiment of this utility model, based on the power module 7, the following will provide a possible embodiment and describe its specific implementation in a non-limiting manner.
[0068] The voltage change unit 7.1 includes a fuse FU, a transformer T1, a voltage regulator chip U1, capacitors C1, C2, and C3, resistors R1 and R2, diodes D1, D2, D3, and D4.
[0069] The first terminal of fuse FU is connected to the voltage terminal of the mine power interface VAC, the second terminal of fuse FU is connected to the first section of capacitor C1 and the first terminal of the primary side of transformer T1, and the second terminal of the primary side of transformer T1 is connected to the second terminal of capacitor C1 and the ground terminal of the mine power interface VAC.
[0070] The first terminal of the secondary side of transformer T1 is connected to the positive terminals of diodes D1 and D3, the negative terminal of diode D1 is connected to the positive terminal of diode D2, the negative terminal of diode D2 is connected to the negative terminal of diode D4 and the second terminal of the secondary side of transformer T1, and the positive terminal of diode D4 is connected to the negative terminal of diode D3.
[0071] The negative terminal of diode D1 is also connected to the first terminal of capacitor C2, the first terminal of resistor R1, and the input pin Vin of voltage regulator chip U1. The second terminal of capacitor C2 is connected to the second terminal of resistor R1, the first terminal of capacitor C3, and the first terminal of resistor R2.
[0072] The negative terminal of diode D3 is also connected to the second terminal of capacitor C3, the second terminal of resistor R2, and the ground pin Gnd of voltage regulator chip U1.
[0073] The output terminal Vout of the voltage regulator chip U1 is connected to the charging / discharging unit 7.2;
[0074] The charging and discharging unit 7.2 includes a charging sub-unit, a discharging sub-unit, and a voltage detection sub-unit;
[0075] The charging sub-unit includes transistor Q1, transistor Q2, resistor R3, resistor R4, resistor R5, and resistor R6;
[0076] The output terminal Vout of the voltage regulator chip U1 is connected to the first terminal of resistor R3 and the collector of transistor Q2;
[0077] The second terminal of resistor R3 is connected to the emitter of transistor Q1. The collector of transistor Q1 is connected to the base of transistor Q2 and the first terminal of resistor R4. The base of transistor Q1 is connected to the second terminal of resistor R4 and the first terminal of resistor R5. The second terminal of resistor R5 is grounded.
[0078] The emitter of transistor Q2 is connected to the first end of resistor R6, and the second end of resistor R6 is connected to the positive terminal of battery BT and the output interface VO.
[0079] Battery BT negative terminal grounded;
[0080] The electron discharge unit includes resistor R7, resistor R11, capacitor C4, transistor Q3, and transistor Q4;
[0081] The positive terminal of the battery BT is connected to the first terminal of resistor R7 and the first terminal of capacitor C4.
[0082] The second terminal of resistor R7 is connected to the collector of transistor Q4, the emitter of transistor Q4 is connected to the second terminal of capacitor C4 and grounded, the base of transistor Q4 is connected to the first terminal of resistor R11, the second terminal of resistor R11 is connected to the emitter of transistor Q3, and the collector of transistor Q3 is connected to the output terminal Vout of voltage regulator chip U1.
[0083] The voltage detection subunit includes resistors R8, R9, and R10, operational amplifier U2, and Zener diode D5;
[0084] The non-inverting input terminal of operational amplifier U2 is connected to the first terminal of resistor R10 and the negative terminal of Zener diode D5. The positive terminal of Zener diode D5 is grounded. The second terminal of resistor R10 is connected to the output terminal Vout of Zener chip U1.
[0085] The inverting input terminal of the transport amplifier U2 is connected to the first terminal of resistor R8 and the first terminal of resistor R9. The second terminal of resistor R9 is grounded, and the second terminal of resistor R8 is connected to the positive terminal of battery BT.
[0086] The output of operational amplifier U2 is connected to the base of transistor Q3.
[0087] It should be noted that, in some embodiments, branch valves are also provided on the branch pipelines at each level;
[0088] Branch valves are connected to the control module 6 of the monitoring substation 4 on the corresponding branch pipeline. The purpose of the branch valves is twofold: first, to facilitate the installation of monitoring sensors. By shutting off the water, liquid, or air supply to the corresponding branch, the monitoring sensors at the monitoring substation 4 can be installed without stopping the entire water, liquid, or air supply pipeline; second, when a leak is detected in the corresponding pipeline underground in the coal mine, the branch valve can be used to shield that branch, awaiting maintenance, without stopping the entire water, liquid, or air supply. Branch valves are not installed on the main pipeline because a leak in the main pipeline constitutes a major safety incident, requiring the shutdown of the entire pipeline.
[0089] It should be noted that, in some embodiments, the monitoring sensor 9 includes a pressure sensor and a flow sensor. The pressure sensor is used to collect the pipe pressure in the water supply pipeline, the hydraulic pressure in the liquid supply pipeline, and the air pressure in the air supply pipeline. The flow sensor is used to collect the flow rate of water in the water supply pipeline, the liquid flow rate of liquid in the liquid supply pipeline, and the air flow rate in the air supply pipeline.
[0090] This invention achieves real-time monitoring of underground coal mine pipelines by dividing the pipeline into hierarchical levels, setting up monitoring substations, and employing MESH wireless communication modules and monitoring sensors. It can promptly detect and handle abnormal situations in the pipelines, ensuring safe production in coal mines. Simultaneously, the system also features remote control and adjustment functions, and utilizes mining-grade explosion-proof and intrinsically safe power modules to ensure electrical safety in the harsh environment of underground coal mines.
[0091] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.
Claims
1. A coal mine underground pipeline monitoring system, characterized in that, This includes underground pipelines and monitoring stations in coal mines; Underground pipelines in coal mines are divided into main pipelines and branch pipelines at various levels; At least one monitoring station is installed on the main pipeline and each level of branch pipeline; The monitoring substation includes a control module, a power module, a MESH wireless communication module, and monitoring sensors; The control module, power module, MESH wireless communication module, and monitoring sensors of the same monitoring substation are connected, and the power module is also connected to the MESH wireless communication module. The MESH wireless communication modules of different monitoring substations form a MESH network; At least one monitoring substation in the MESH network is connected to the main monitoring station via a MESH wireless communication module.
2. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, Underground pipelines in coal mines include water supply pipelines, liquid supply pipelines, and air supply pipelines.
3. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, The monitoring sensors include pressure sensors and flow sensors.
4. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, The power module includes a mining power interface, a voltage conversion unit, a charging and discharging unit, and a battery; The mine power interface is connected to the input of the voltage conversion unit, the output of the voltage conversion unit is connected to the charging and discharging unit, and the charging and discharging unit is connected to the battery. The charging and discharging unit is also connected to an output interface, which is connected to the control module and the MESH wireless communication module.
5. The coal mine underground pipeline monitoring system as described in claim 4, characterized in that, The power conversion unit includes a charging subunit, a discharging subunit, and a voltage detection subunit.
6. The coal mine underground pipeline monitoring system as described in claim 4, characterized in that, The mine power interface connects to a 127V AC power supply for mining; the battery is a nickel-metal hydride dry cell battery. The output interface is a 5V DC voltage interface.
7. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, The monitoring substation also includes a network module; The network module is connected to the control module; The network module of the monitoring substation closest to the monitoring master station is connected to the monitoring master station via wired industrial Ethernet or wireless communication.
8. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, In a MESH network, the MESH wireless communication module of the monitoring substation closest to the monitoring master station is connected to the monitoring master station.
9. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, Branch valves are also installed on the branch pipelines at each level; The branch valves are connected to the control modules of the monitoring substations on the corresponding branch pipelines.
10. The coal mine underground pipeline monitoring system as described in claim 1, characterized in that, The power module adopts a mining-grade explosion-proof and intrinsically safe power module.