Wireless environment monitor in coal mine goaf

Abstract

The wireless environment monitor in the coal mine goaf comprises a shell, a support and an anti-toppling base, the upper end of the anti-toppling base is connected with the support, and the top of the support is rotationally connected with the shell; the interior of the shell is provided with three layers of spaces from top to bottom, namely an upper-layer containing space, a middle-layer containing space and a lower-layer containing space. An environment monitoring unit is arranged in the upper-layer accommodating space of the shell, a power supply device is arranged in the middle-layer accommodating space of the shell, and a balancing weight is arranged in the lower-layer accommodating space of the shell; the environment monitoring unit comprises a gas monitoring module, a wind speed monitoring module, a temperature monitoring module and a network transmission module, the gas monitoring module, the wind speed monitoring module and the temperature monitoring module are all connected with the network transmission module, and the gas monitoring module, the wind speed monitoring module, the temperature monitoring module and the network transmission module are all connected with the power supply device. According to the invention, a powerful guarantee is provided for safe production of a coal mine, and the stability and adaptability of equipment in a complex and severe environment are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of monitoring instruments, and in particular relates to a wireless environment monitoring instrument in a coal mine goaf area, which is used for analyzing coal mine gas. Background Art

[0002] Coal mine goaf refers to the space left after coal mining. Due to the instability of the roof and side walls, these areas are prone to roof collapse and coal block falling, resulting in a complex and harsh environment in the coal mine goaf. In addition, spontaneous combustion of coal left in the goaf occurs from time to time. The coal left in the goaf may spontaneously combust due to poor ventilation, and then cause a fire, which poses a serious threat to the safe production work of the coal mining face. Traditional wired monitoring systems are difficult to deploy in such an environment because laying cables and power lines is not only costly, but also susceptible to physical damage caused by roof collapse, coal block falling, etc. Therefore, it is crucial to design a wireless environment monitor in the coal mine goaf that can operate stably in complex and harsh environments to ensure coal mine safety.

[0003] The development of modern wireless sensor technology has provided a possibility to solve this problem. By using wireless communication technology with self-organizing networking capabilities, a dynamic network can be built that does not rely on fixed infrastructure. At the same time, considering the roof collapse, coal block falling and other phenomena that may occur in the coal mine goaf, the monitoring equipment needs to have a certain ability to prevent dumping. In response to the above problems, the present invention proposes a wireless environment monitor suitable for coal mine goafs, which can not only realize real-time monitoring of the gas concentration, temperature and wind speed of the environment in the coal mine goaf, but also has good stability and adaptability to meet the needs of safe production in coal mines. Summary of the invention

[0004] The present invention aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides a wireless environment monitoring instrument in the goaf of a coal mine.

[0005] To achieve the above purpose, the present invention adopts the following technical solution.

[0006] The present invention provides a wireless environment monitor for coal mine goaf, comprising a shell, a bracket and an anti-dumping base, wherein the upper end of the anti-dumping base is fixedly connected to the bracket, and the top of the bracket is rotatably connected to the shell; three layers of space are arranged inside the shell from top to bottom, namely an upper accommodating space, a middle accommodating space and a lower accommodating space; an environment monitoring unit is arranged in the upper accommodating space of the shell, a power supply device is arranged in the middle accommodating space of the shell, and a counterweight block is arranged in the lower accommodating space of the shell; the environment monitoring unit comprises a gas monitoring module, a wind speed monitoring module, a temperature monitoring module and a network transmission module, wherein the gas monitoring module, the wind speed monitoring module and the temperature monitoring module are respectively connected to the network transmission module, and the gas monitoring module, the wind speed monitoring module, the temperature monitoring module and the network transmission module are all connected to the power supply device.

[0007] As a preferred solution of the present invention, the environmental monitoring unit also includes a power management module, which is electrically connected to the power supply device. The gas monitoring module, wind speed monitoring module, temperature monitoring module, and network transmission module are all connected to the power supply device through the power management module.

[0008] As another preferred solution of the present invention, the power management module is used to manage the power supply range and power supply duration of the power supply device.

[0009] As another preferred embodiment of the present invention, the power management module connects to the power supply device at the set time, and regularly supplies power to the gas monitoring module, the temperature monitoring module, the wind speed monitoring module, and the network transmission module, and the set time number is ≥2 times.

[0010] As another preferred solution of the present invention, the network transmission module is equipped with a built-in positioning coding chip.

[0011] As another preferred solution of the present invention, the network transmission module adopts a wireless MESH network implemented by WiFi.

[0012] As another preferred solution of the present invention, the power supply device adopts a battery.

[0013] As another preferred solution of the present invention, the shell is a spherical shell.

[0014] As another preferred solution of the present invention, fixed groove seats are symmetrically arranged on the outer surface of the shell on the left and right sides of the middle accommodating space, and bearings are installed in the fixed groove seats; a monitoring hole is also arranged on the upper part of the shell.

[0015] As another preferred embodiment of the present invention, the anti-dumping base adopts a solid semi-ellipsoidal spherical base, and a mounting bracket is fixed on the upper plane of the solid semi-ellipsoidal spherical base. Fixed shafts are symmetrically arranged on the left and right sides of the upper end of the bracket, and the fixed shafts are correspondingly connected to the bearings in the fixed groove seat.

[0016] Beneficial effects of the present invention:

[0017] The wireless environment monitoring device for coal mine goaf provided by the present invention has the following significant advantages:

[0018] (1) The present invention adopts an anti-dumping base design and a counterweight block inside the shell. The monitor can remain relatively stable in the event of roof collapse or coal block falling, reducing the risk of equipment damage, ensuring continuous and effective environmental monitoring, and providing strong protection for coal mine safety production.

[0019] (2) The spherical shell design of the present invention not only increases the impact resistance of the equipment, but also the fixed grooves and bearings arranged on its surface allow the shell to rotate slightly with external forces, thereby effectively dispersing external pressure and improving the stability and adaptability of the equipment in complex and harsh environments.

[0020] (3) The built-in power management module of the present invention can accurately control the power supply range and duration, and supply power to each functional module according to a preset time interval, which not only ensures the necessary data collection frequency, but also prolongs the battery life and reduces maintenance costs.

[0021] (4) The wireless MESH network constructed by the present invention using WiFi technology not only supports self-organizing networking between multiple monitoring instruments, but also realizes real-time data transmission with the ground monitoring center, greatly improving the efficiency and reliability of information transmission.

[0022] (5) The present invention does not require laying cables and power lines, which reduces installation costs and time, while avoiding line failures caused by physical damage, and facilitates rapid deployment and subsequent maintenance.

[0023] (6) The integrated monitoring of multiple parameters such as gas, temperature and wind speed of the present invention, combined with the application of positioning coding chips, can accurately reflect the changes in the microenvironment in the goaf and provide a detailed basis for scientific decision-making; and through the reasonable arrangement of multiple monitoring points, a comprehensive monitoring network is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The present invention is a schematic structural diagram of a wireless environment monitoring device in a coal mine goaf.

[0026] Figure 2 The present invention is a schematic diagram of the internal structure of a shell of a wireless environment monitoring device in a coal mine goaf.

[0027] Markings in the figure: 1 is the shell, 2 is the gas monitoring module, 3 is the power management module, 4 is the power supply device, 5 is the counterweight, 6 is the lower accommodating space, 7 is the middle accommodating space, 8 is the upper accommodating space, 9 is the network transmission module, 10 is the wind speed monitoring module, 11 is the temperature monitoring module, 12 is the fixed slot seat, 13 is the bracket, and 14 is the anti-dumping base. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] like Figure 1 and Figure 2 As shown, a wireless environment monitor in a coal mine goaf provided by an embodiment of the present invention comprises a shell 1, a bracket 13 and an anti-dumping base 14, wherein the upper end of the anti-dumping base 14 is fixedly connected to the bracket 13, and the top of the bracket 13 is rotatably connected to the shell 1; three layers of space are arranged inside the shell 1 from top to bottom, namely an upper accommodating space 8, a middle accommodating space 7, and a lower accommodating space 6; an environment monitoring unit is arranged in the upper accommodating space 8 of the shell 1, a power supply device 4 is arranged in the middle accommodating space 7 of the shell 1, and a counterweight 5 is arranged in the lower accommodating space 6 of the shell 1; the environment monitoring unit comprises a gas monitoring module 2, a wind speed monitoring module 10, a temperature monitoring module 11, and a network transmission module 9, wherein the gas monitoring module 2, the wind speed monitoring module 10, and the temperature monitoring module 11 are respectively connected to the network transmission module 9, and the gas monitoring module 2, the wind speed monitoring module 10, the temperature monitoring module 11, and the network transmission module 9 are all connected to the power supply device 4.

[0030] Among them, the gas monitoring module 2 includes an oxygen sensor, a methane sensor, a carbon monoxide sensor, and a carbon dioxide sensor, which are used to analyze and store oxygen, methane, carbon monoxide, and carbon dioxide; the temperature monitoring module 11 is used to collect and store temperature values; the wind speed monitoring module 10 is used to monitor and store wind speed values; multiple wireless environmental monitors of the present invention are arranged in the coal mine goaf, and each wireless environmental monitor can communicate with each other through its own network transmission module 9. At the same time, the monitored gas concentration value, temperature value, and wind speed value can be uploaded to the ground monitoring center through the network transmission module 9, which is convenient for the staff to understand the environmental information in the coal mine goaf in real time. Once an emergency problem is found, timely response measures can be taken to ensure safe production in the coal mine.

[0031] The environmental monitoring unit also includes a power management module 3, which is electrically connected to a power supply device 4. The gas monitoring module 2, wind speed monitoring module 10, temperature monitoring module 11, and network transmission module 9 are all connected to the power supply device 4 through the power management module 3.

[0032] The power management module 3 is used to manage the power supply range and power supply duration of the power supply device 4; the power supply device 4 uses a battery; the power management module 3 connects to the power supply device at the set time, and regularly supplies power to the gas monitoring module 2, the temperature monitoring module 11, the wind speed monitoring module 10, and the network transmission module 9, and the set time number is ≥ 2 times; specifically, the power management module 3 supplies power to the gas monitoring module 2, the wind speed monitoring module 10, the temperature monitoring module 11, and the network transmission module 9 for 2-5 minutes after the data transmission is completed. The power management module 3 can flexibly adjust the power supply strategy according to actual work needs. For example, it automatically enters the low power consumption mode during non-working hours, and quickly wakes up the system to resume normal operation when a specific condition is detected, so as to achieve energy saving.

[0033] The network transmission module 9 is equipped with a positioning coding chip, and the network transmission module 9 adopts a wireless MESH network implemented by WiFi to realize data transmission between multiple wireless environment monitoring instruments. In addition to supporting WiFi wireless MESH network, the network transmission module 9 can also be compatible with other wireless communication protocols, such as ZigBee and LoRa, so as to select the best communication method according to the application scenario. In addition, the built-in positioning coding chip allows each monitoring node to have a unique identity, which is convenient for network management and data tracing.

[0034] The shell 1 is a spherical shell, and fixed groove seats 12 are symmetrically arranged on the outer surface of the shell 1 on the left and right sides of the middle-level accommodating space 7, and bearings are installed in the fixed groove seats 12; a monitoring hole is also arranged on the upper part of the shell 1, and external gas can enter the upper accommodating space 8 of the shell 1 through the monitoring hole, which is convenient for the gas monitoring module 2, the wind speed monitoring module 10, and the temperature monitoring module 11 to monitor the environment in the coal mine goaf.

[0035] The anti-dumping base 14 adopts a solid semi-elliptical spherical base, and a mounting bracket 13 is fixed on the upper plane of the solid semi-elliptical spherical base. Fixed shafts are symmetrically arranged on the left and right sides of the upper end of the bracket 13, and the fixed shafts are correspondingly connected to the bearings in the fixed slot seat 12; wherein, the bracket 13 is a sloped structure that is narrow at the top and wide at the bottom. By arranging a counterweight block 5 in the lower accommodating space 6 of the shell 1 to unbalance the weight of the shell 1, combined with the rotatable shell 1 and the anti-dumping base 14, the impact force on the wireless environment monitor caused by the falling of the roof in the coal mine goaf can be reduced. Specifically, the anti-dumping base 14 is made of high-strength material to ensure that it is not easily deformed during long-term use; the bracket 13 adopts a sloped structure design that is narrow at the top and wide at the bottom, which enhances the stability of the overall structure.

[0036] The present invention is mainly used to monitor the gas concentration, temperature and wind speed in the goaf of coal mines, and provide technical support for the prevention and control of spontaneous combustion of coal in the goaf and the control of mine air leakage; in summary, the wireless environment monitoring instrument in the goaf of coal mines provided by the present invention provides a new solution for improving the safety condition of the goaf of coal mines.

[0037] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A wireless environment monitoring instrument in a coal mine goaf, characterized in that: It includes a shell, a bracket and an anti-dumping base, the upper end of the anti-dumping base is fixedly connected to the bracket, and the top of the bracket is rotatably connected to the shell; three layers of space are arranged inside the shell from top to bottom, namely an upper accommodating space, a middle accommodating space, and a lower accommodating space; an environmental monitoring unit is arranged in the upper accommodating space of the shell, a power supply device is arranged in the middle accommodating space of the shell, and a counterweight block is arranged in the lower accommodating space of the shell; the environmental monitoring unit includes a gas monitoring module, a wind speed monitoring module, a temperature monitoring module, and a network transmission module, and the gas monitoring module, the wind speed monitoring module, and the temperature monitoring module are respectively connected to the network transmission module, and the gas monitoring module, the wind speed monitoring module, the temperature monitoring module, and the network transmission module are all connected to the power supply device.

2. A wireless environment monitoring device for coal mine goaf according to claim 1, characterized in that: The environmental monitoring unit also includes a power management module, which is electrically connected to the power supply device. The gas monitoring module, wind speed monitoring module, temperature monitoring module, and network transmission module are all connected to the power supply device through the power management module.

3. A wireless environment monitoring device for coal mine goaf according to claim 2, characterized in that: The power management module is used to manage the power supply range and power supply duration of the power supply device.

4. A wireless environment monitoring device for coal mine goaf according to claim 3, characterized in that: The power management module connects to the power supply device at the set time, and regularly supplies power to the gas monitoring module, the temperature monitoring module, the wind speed monitoring module, and the network transmission module, and the set time number is ≥2 times.

5. The wireless environment monitoring device in coal mine goaf according to claim 1, characterized in that: The network transmission module is equipped with a positioning coding chip.

6. A wireless environment monitoring device for coal mine goaf according to claim 1, characterized in that: The network transmission module adopts a wireless MESH network implemented by WiFi.

7. A wireless environment monitoring device for coal mine goaf according to claim 1, characterized in that: The power supply device adopts a battery.

8. The wireless environment monitoring device in coal mine goaf according to claim 1, characterized in that: The shell is a spherical shell.

9. A wireless environment monitoring device for coal mine goaf according to claim 1, characterized in that: Fixed groove seats are symmetrically arranged on the outer surface of the shell body at the left and right sides of the middle-layer accommodating space, and bearings are installed in the fixed groove seats; and a monitoring hole is also arranged on the upper part of the shell body.

10. The wireless environment monitoring device in coal mine goaf according to claim 1, characterized in that: The anti-dumping base adopts a solid semi-elliptical spherical base, and a mounting bracket is fixed on the upper plane of the solid semi-elliptical spherical base. Fixed shafts are symmetrically arranged on the left and right sides of the upper end of the bracket, and the fixed shafts are correspondingly connected to the bearings in the fixed groove seat.

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