A working state monitoring system for hydraulic supports in fully-mechanized coal mining face

Abstract

An information monitoring device and system for the operation of hydraulic supports in a fully-mechanized coal mining face according to an embodiment of the present invention relates to the technical field of equipment monitoring in a fully-mechanized coal mining face, and can monitor the working state of hydraulic supports in a fully-mechanized coal mining face, thereby improving the safety of production. It includes: a hydraulic support state information acquisition device for acquiring the state information of hydraulic supports in a fully-mechanized coal mining face and sending it; the state information includes: position, attitude and / or pressure; a hydraulic support state information display sub-station for receiving and displaying the acquired state information, processing the data of the state information, and sending the processed data; a gateway monitoring center for receiving the processed data and determining the working state of hydraulic supports based on the processed data; and a ground control center for displaying the working states of all hydraulic supports in the entire coal mine. The present invention is applicable to the monitoring of the working states of hydraulic supports in a fully-mechanized coal mining face.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment monitoring in fully mechanized coal mining faces, and particularly to a monitoring system for the working state of hydraulic supports in a fully mechanized coal mining face. Background Art

[0002] Hydraulic supports are one of the main equipment in a coal mining face (also known as a fully mechanized coal mining face), and are structures used to control the mine pressure in the coal mining face. The mine pressure in the face acts on the hydraulic support in the form of external load. During the coal mining process, the hydraulic support needs to cooperate with equipment such as coal shearers, scraper conveyors, crushers, and transfer conveyors. Ensuring the normal operation of the hydraulic support is an important basis for achieving high production, high efficiency, and safe production in coal mining. Therefore, monitoring the operating state of the hydraulic support, and mastering the working states such as the position, attitude, and roof pressure borne by the hydraulic support, is of great significance for providing reference for underground workers to control the hydraulic support and ensuring the normal operation and safe production of the coal mining face. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a monitoring system for the working state of hydraulic supports in a fully mechanized coal mining face, which can monitor the working state of the hydraulic supports in the fully mechanized coal mining face, thereby improving the safety of production to a certain extent.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a monitoring system for the working state of hydraulic supports in a fully mechanized coal mining face, including: a hydraulic support state information acquisition device, configured to acquire the state information of the hydraulic support in the fully mechanized coal mining face and send it; the state information includes: position, attitude, and / or pressure;

[0006] A hydraulic support state information display sub-station, configured to receive and display the acquired state information, process the data of the state information, and send the processed data;

[0007] A gateway monitoring center, configured to receive the processed data and determine the working states of all hydraulic supports in the face based on the processed data.

[0008] Optionally, the monitoring system further includes: a hydraulic support information display main station, configured to receive the processed data sent by the hydraulic support state information display sub-station, display the working and communication connection states of the hydraulic support state information acquisition device, and send the received processed data to the gateway monitoring center.

[0009] Optionally, the monitoring system further includes: a ground monitoring center, configured to receive and display the working states of the hydraulic supports sent by multiple gateway monitoring centers.

[0010] Optionally, data transmission between the hydraulic support status information acquisition device and the hydraulic support status information display sub-station and / or the gateway monitoring center is performed via wireless communication.

[0011] Optionally, the hydraulic support status information acquisition device is specifically configured to:

[0012] Acquire the real-time status information of the hydraulic support;

[0013] Monitor whether the data of the status information is within the first threshold range;

[0014] If the data is within the first threshold range, periodically send the status information to the hydraulic support status information display sub-station;

[0015] If the data is not within the first threshold range, trigger the alarm mechanism of the hydraulic support information acquisition device, and send the current status information to the hydraulic support status information display sub-station, so that the hydraulic support status information display sub-station issues an alarm signal through a buzzer or a display screen.

[0016] Optionally, the hydraulic support information acquisition device includes, but is not limited to: an acceleration sensor module for monitoring and acquiring the inclination angle of the hydraulic support;

[0017] A pressure sensor module for monitoring the liquid pressure in the lower cavity of the hydraulic support column and the pressure borne by the balance jack;

[0018] A ranging sensor module for measuring the compression displacement of the current hydraulic support;

[0019] A stroke sensor module for measuring the moving distance of the hydraulic support along the advancing direction of the coal mining face.

[0020] Optionally, the hydraulic support status information display sub-station is specifically configured to:

[0021] Receive the inclination angle of the hydraulic support sent by the acceleration sensor module:

[0022] Convert the angle into the deflection, first position and first mining height information of the current hydraulic support; and / or,

[0023] Receive the liquid pressure in the lower cavity of the hydraulic support column and the pressure borne by the balance jack sent by the pressure sensor module.

[0024] Optionally, the hydraulic support status information display sub-station is further specifically configured to: receive the compression displacement of the current hydraulic support sent by the ranging sensor module;

[0025] Convert the compression displacement into the second mining height information of the current hydraulic support;

[0026] Modify the first mining height information according to the second mining height information.

[0027] Optionally, the hydraulic support status information display sub-station is further specifically configured to:

[0028] Receive the moving distance of the hydraulic support sent by the travel sensor module;

[0029] Calculate the relative position information between the current hydraulic support and the shearer according to the moving distance;

[0030] Modify the first position information based on the relative position information.

[0031] Optionally, a scraper conveyor is arranged in the open-off cut roadway in front of the fully-mechanized coal mining face, and a shearer is arranged on the scraper conveyor, and the shearer can move back and forth along the scraper conveyor;

[0032] The monitoring system includes multiple hydraulic supports, and the hydraulic supports are located on the side of the scraper conveyor away from the fully-mechanized coal mining face;

[0033] A set of the hydraulic support status information acquisition device is arranged on each hydraulic support, the ranging sensor module is installed at the front end of the hydraulic support base, the travel sensor module is installed at the front end of the hydraulic support base, the pressure sensor module is installed on the lower cavity of the upright post and the two cavities of the balance jack, and the acceleration sensor module is installed on the top beam, the base and the rear connecting rod of the hydraulic support;

[0034] The wireless communication method includes LoRa or ZigBee wireless communication technology, and the hydraulic support status information display sub-station is arranged on the hydraulic support;

[0035] The gateway monitoring center is arranged in the upper gateway, and data is transmitted between the hydraulic support status information display sub-station and the gateway monitoring center through a wireless communication method.

[0036] An embodiment of the present invention provides a monitoring system for the working state of hydraulic supports in a fully-mechanized coal mining face, including: a hydraulic support status information acquisition device, configured to acquire and send the status information of the hydraulic support in the fully-mechanized coal mining face; the status information includes: position, attitude and / or pressure; a hydraulic support status information display sub-station, configured to receive and display the acquired status information, perform data processing on the status information, and send the processed data; a gateway monitoring center, configured to receive the processed data and determine the working state of the hydraulic support based on the processed data. By arranging the monitoring system at an appropriate position in the fully-mechanized coal mining face, the working state of the hydraulic supports in the fully-mechanized coal mining face can be monitored, the normal operation of the fully-mechanized coal mining face can be ensured, and the production safety can be improved to a certain extent. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a schematic plan view of a working state monitoring system for hydraulic supports in a fully mechanized coal mining face according to an embodiment of the present invention;

[0039] Figure 2 It is a schematic structural view of another embodiment of the working state monitoring system for hydraulic supports in a fully mechanized coal mining face according to the present invention;

[0040] Figure 3 It is a schematic structural view of yet another embodiment of the visual monitoring and measurement system for equipment in a fully mechanized coal mining face according to the present invention. Specific embodiments

[0041] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings.

[0042] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In order to more clearly illustrate the present invention, numerous technical details are described in the following specific embodiments. Those skilled in the art should understand that the present invention can still be implemented without some of these details. Additionally, in order to highlight the inventive concept of the present invention, some methods, means, components, and their applications well-known to those skilled in the art are not described in detail, but this does not affect the implementation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] Embodiment 1

[0044] Refer to Figure 1 and Figure 2 As shown, the working state monitoring system for hydraulic supports in a fully mechanized coal mining face provided by the embodiments of the present invention can be applied to monitor the working state of equipment in a fully mechanized coal mining face, and the equipment in a fully mechanized coal mining face includes hydraulic supports.

[0045] The monitoring system includes: a hydraulic support state information acquisition device 100, which provides a data basis for the hydraulic support monitoring system and is used to acquire and send the state information of the hydraulic support in the fully mechanized coal mining face; the state information includes: position, attitude, and / or pressure, and the attitude is generally measured by inclination.

[0046] The hydraulic support status information display sub-station 200 is used to receive and display the collected status information, process the data of the status information, and send the processed data.

[0047] Among them, the number of hydraulic supports on the working face is usually set in multiple units along the length direction of the fully-mechanized coal mining face. Correspondingly, each hydraulic support is provided with a set of hydraulic support status information display sub-stations 200.

[0048] Specifically, the hydraulic support status information display sub-station 200 is also used to display the received status information of the hydraulic support. In this way, the operating personnel on the fully-mechanized coal mining face can observe the working status of the corresponding hydraulic support to ensure the safety of production.

[0049] The gateway monitoring center 400 is used to receive the processed data and determine the working status of all hydraulic supports on the working face based on the processed data.

[0050] The fully-mechanized coal mining face hydraulic support working status monitoring system provided by the embodiments of the present invention includes: a hydraulic support status information acquisition device 100, which is used to acquire and send the status information of the hydraulic support in the fully-mechanized coal mining face; the status information includes: position, attitude, and / or pressure; a hydraulic support status information display sub-station 200, which is used to receive and display the collected status information, process the data of the status information, and send the processed data; a gateway monitoring center 400, which is used to receive the processed data and determine the working status of the hydraulic support based on the processed data. By setting the monitoring system at an appropriate position on the fully-mechanized coal mining face, it is possible to monitor the working status of the hydraulic supports on the fully-mechanized coal mining face, ensure the normal operation of the fully-mechanized coal mining face, and thus improve the safety of production to a certain extent.

[0051] The hydraulic support status information acquisition device 100 and the hydraulic support status information display sub-station 200 and / or the gateway monitoring center 400 can be connected through a CAN (Controller Area Network) bus for data transmission. However, with the advancement of the coal mining face and operations such as lifting and lowering the supports, the wired network is easily torn off, resulting in network failures and even causing the entire monitoring system to malfunction.

[0052] Therefore, as an optional embodiment, the hydraulic support status information acquisition device 100 and the hydraulic support status information display sub-station 200 and / or the gateway monitoring center 400 perform data transmission through a wireless communication method. In this way, by using a wireless communication method for data transmission between the hydraulic support status information acquisition device 100 and the hydraulic support status information display sub-station 200 and / or the gateway monitoring center 400, the risk of tearing off the wired cable during the advancement of the coal mining face can be avoided, and the working stability of the monitoring system can be ensured.

[0053] Continue to refer to Figure 1 As shown, in some embodiments, the monitoring system further includes: a main station 300 for displaying information of hydraulic supports, configured to receive the processed data sent by the sub-station 200 for displaying the status information of hydraulic supports, display the working and communication connection status of the device 100 for collecting the status information of hydraulic supports, and send the received processed data to the gateway monitoring center 400.

[0054] In this embodiment, when wireless communication is used for data transmission, there may be "dead spots" with weak signals in the roadway, which affects the transmission stability. To avoid possible signal "dead spots", by adding the main station 300 for displaying information of hydraulic supports, it can act as a signal relay or amplifier, improving the stability of data transmission or communication.

[0055] The technical solution provided in this embodiment is provided with a sub-station 200 and a main station 300 for displaying the status information of hydraulic supports in the monitoring system. The monitoring system can work independently of the existing face control center, or can also connect the data to the existing gateway control center or the ground control center, realizing the flexible use of the monitoring system and increasing the application scenarios of the monitoring system.

[0056] Specifically, the monitoring system further includes: a ground monitoring center 500, configured to receive the working status of hydraulic supports sent by multiple gateway monitoring centers and display it, and control the hydraulic supports based on the working status of the hydraulic supports.

[0057] The device 100 for collecting the status information of hydraulic supports has two working modes: one is to transmit data regularly. The data such as the position and pressure of hydraulic supports is a slowly changing data, and it can work under a relatively low sampling frequency. The other is to be triggered by abnormal situations. When the data of some hydraulic supports changes suddenly at a certain moment, the alarm mechanism of the device 100 for collecting the status information of hydraulic supports is triggered, and the current data is transmitted to the sub-station 200 for displaying the status information of hydraulic supports.

[0058] Specifically, the device 100 for collecting the status information of hydraulic supports is specifically configured to:

[0059] Collect the real-time status information of hydraulic supports;

[0060] Monitor whether the data of the status information is within the first threshold range;

[0061] If the data is within the first threshold range, regularly send the status information to the sub-station 200 for displaying the status information of hydraulic supports; the sampling period of the device 100 for collecting the status information of hydraulic supports can be set to once every 5 minutes.

[0062] If the data is not within the first threshold range, the alarm mechanism of the hydraulic support information acquisition device is triggered, and the current status information is sent to the hydraulic support status information display sub-station 200, so that the hydraulic support status information display sub-station 200 emits an alarm signal through a buzzer or a display screen.

[0063] Specifically, the triggering conditions can be that the deflection yaw angle of the hydraulic support is greater than 10°, or the roll angle is greater than 5°, or the column pressure of the hydraulic support is greater than 300 MPa.

[0064] According to the foregoing description, the state data such as the pose and pressure of the hydraulic support is a slowly changing data under normal conditions. When an abnormal condition occurs, the data will change suddenly. According to the method of the embodiment of the present invention, the working state of the hydraulic support can be effectively monitored.

[0065] The hydraulic support information acquisition device includes but is not limited to: an acceleration sensor module 140 for monitoring and collecting the inclination angle of the hydraulic support; the acceleration sensor module can be an inclination sensor. Refer to Figure 1 As shown, the inclination sensor is, for example, a gyroscope.

[0066] A pressure sensor module 130 for monitoring the liquid pressure in the lower chamber of the hydraulic support column and the pressure borne by the balance jack.

[0067] A ranging sensor module 110 for measuring the compression displacement of the current hydraulic support; the ranging sensor module can be a laser sensor, an infrared sensor or a distance sensor.

[0068] A stroke sensor module 120 for measuring the moving distance of the hydraulic support along the advancing direction of the coal mining face.

[0069] In some embodiments, the hydraulic support status information display sub-station 200 is specifically used for:

[0070] Receiving the inclination angle of the hydraulic support sent by the acceleration sensor module: converting the angle into the deflection, first position and first mining height information of the current hydraulic support; and / or,

[0071] Receiving the liquid pressure in the lower chamber of the hydraulic support column and the pressure borne by the balance jack sent by the pressure sensor module.

[0072] In other embodiments of the present embodiment, the hydraulic support status information display sub-station 200 is further specifically used for: receiving the compression displacement of the current hydraulic support sent by the ranging sensor module;

[0073] Converting the compression displacement into the second mining height information of the current hydraulic support;

[0074] When the ranging sensor module is a laser rangefinder, the laser rangefinder can be installed at the front end of the hydraulic support base to measure the distance between the hydraulic support base and the roof beam, and the actual mining height can be calculated through the specification size of the hydraulic support, that is, the second mining height information.

[0075] Correct the first mining height information according to the second mining height information.

[0076] Specifically, correcting the first mining height information according to the second mining height information includes:

[0077] Judge whether the second mining height information is consistent with the first mining height information;

[0078] If they are inconsistent, continue to judge whether the difference between the second mining height information and the first mining height information is within the specified threshold range;

[0079] If it is, take the average value of the second mining height information and the first mining height information to update the first mining height information.

[0080] In some other embodiments, the hydraulic support status information display sub-station 200 is specifically further configured to:

[0081] Receive the moving distance of the hydraulic support sent by the stroke sensor module;

[0082] Calculate the relative position information between the current hydraulic support and the shearer according to the moving distance;

[0083] Correct the first position information based on the relative position information.

[0084] The solution provided by the embodiment of the present invention can comprehensively collect data such as the attitude, pressure, mining height, and position of the hydraulic support during operation. Compared with the traditional independent hydraulic support attitude monitoring system and pressure monitoring system, it can describe the working state of the hydraulic support from different dimensions, and can be mutually corrected and supplemented through a variety of data, increasing the reliability of the hydraulic support monitoring system.

[0085] See Figure 1 and Figure 3 As shown, in some embodiments, a scraper conveyor and multiple hydraulic supports are arranged in the open-off cut roadway in front of the fully-mechanized coal face. The scraper conveyor is arranged in the open-off cut roadway in front of the fully-mechanized coal face, a shearer is arranged on the scraper conveyor, the shearer can move back and forth along the scraper conveyor, and the hydraulic support is located on the side of the scraper conveyor away from the fully-mechanized coal face;

[0086] A set of the hydraulic support status information acquisition device 100 is provided on each hydraulic support. The ranging sensor module is installed at the front end of the hydraulic support base, and the pressure sensor module is installed on the lower chamber of the column and both chambers of the balance jack. The pressure information obtained by it records the pressure borne by the hydraulic support during the working process. Recording the historical data of this pressure can predict the weighting of the working face and provide a basis for the intelligent control of the working face.

[0087] The stroke sensor module is installed at the front end of the hydraulic support base. During the pushing process of the hydraulic support, it is necessary to ensure that it is perpendicular to the scraper conveyor. The data obtained by the stroke sensor module can not only reflect the relative position between the current hydraulic support and the scraper conveyor, but also reflect the relative position between the current hydraulic support and adjacent hydraulic supports. If the hydraulic support is skewed during the pushing process, the acceleration sensor module can obtain the tilt angle. The acceleration sensor module can convert the collected distance information into the position information of the hydraulic support.

[0088] The acceleration sensor module can be an inclination sensor. The acceleration sensor module is installed on the top beam, base and rear connecting rod of the hydraulic support. By measuring the inclination angle data of these positions of the hydraulic support, on the one hand, it can monitor the attitude information of the hydraulic support in real time and provide data support for the staff to understand the working state of the hydraulic support; on the other hand, it can be combined with the pressure data measured by the pressure sensor to calculate the force balance point of the hydraulic support and provide a basis for better controlling the hydraulic support. Among them, calculating the force balance point of the hydraulic support according to the inclination angle data and pressure data specifically is theoretical mechanics knowledge and is the prior art, so it will not be elaborated specifically.

[0089] The wireless communication methods include wireless communication chips such as LoRa, WiFi, Bluetooth, ZigBee, 4G, etc. If the LoRa module is adopted, the module can be set to work in the 433MHz frequency band and the 3-level energy consumption mode. At this time, the underground communication distance of the module is 100 meters, which can meet the communication requirements.

[0090] The hydraulic support is provided with the hydraulic support status information display sub-station 200. The hydraulic support status information display sub-station 200 receives the data collected by each sensor module through wireless communication. According to the wireless communication distance and communication speed, one hydraulic support status information display sub-station 200 is set for every five hydraulic supports. Of course, on the premise of not considering the cost, one hydraulic support status information display sub-station 200 can also be set on each hydraulic support.

[0091] The data collected by each sensor module contains the hydraulic support number information. The hydraulic support status information display sub-station 200 can be installed on the hydraulic support with the smallest number in a group (five) of hydraulic supports corresponding to it.

[0092] Specifically, the status information of the hydraulic support in the fully mechanized coal mining face carries the hydraulic support number information;

[0093] The gateway monitoring center 400 is further configured to determine the corresponding working status of the hydraulic support according to the hydraulic support number information. In this way, when the working status of the hydraulic support is abnormal, the specific hydraulic support can be quickly determined for enhanced support or emergency repair, thereby ensuring the safety of the fully mechanized coal mining face.

[0094] The gateway monitoring center 400 is arranged in the upper gateway, and data is transmitted between the hydraulic support status information display sub-station 200 and the gateway monitoring center 400 in a wireless communication manner.

[0095] Among them, according to the previous description, referring to Figure 2 As shown, in some embodiments, one or two main stations 300 for displaying hydraulic support information may be provided for each working face. If one main station is provided for a working face, the main station is installed at the middle position of the mining working face; if two main stations are provided for a working face, the main stations are installed at the one-third and two-thirds positions of the length of the mining working face.

[0096] The monitoring system for the working status of hydraulic supports in the fully mechanized coal mining face proposed in the embodiments of the present invention can collect the status information during the working process of the hydraulic supports through a variety of sensor modules with wireless transmission functions. After processing the obtained information, the working status of the hydraulic supports can be obtained, providing a basis for mine workers to control the hydraulic supports and data support for the automatic control system of the hydraulic supports, meeting the needs of coal mine workers for information collection of hydraulic supports, filling the gap in the monitoring system for the working status of hydraulic supports in the fully mechanized coal mining face in the market, and having important significance for the research and development of the intelligent system for the coal mining face.

[0097] It should be noted that the various embodiments in this specification are all described in a related manner. The same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. Additionally, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0098] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A working state monitoring system for hydraulic supports in a fully-mechanized coal mining face, characterized in that, Including: A hydraulic support status information acquisition device, which is used to acquire the status information of the hydraulic support in the fully mechanized coal mining face and send it; The status information includes: position, attitude and pressure; A hydraulic support status information display sub-station, which is used to receive and display the acquired status information, process the data of the status information, and send the processed data; A gateway monitoring center, which is used to receive the processed data and determine the working status of all hydraulic supports in the working face based on the processed data; The hydraulic support information acquisition device includes: an acceleration sensor module, which is used to monitor and acquire the inclination angle of the hydraulic support; A pressure sensor module, which is used to monitor the liquid pressure in the lower cavity of the hydraulic support column and the pressure borne by the balance jack; A ranging sensor module, which is used to measure the compression displacement of the current hydraulic support; A stroke sensor module, which is used to measure the moving distance of the hydraulic support along the advancing direction of the coal mining face; The hydraulic support status information display sub-station is specifically used for: Receiving the inclination angle of the hydraulic support sent by the acceleration sensor module; Converting the angle into the deflection, first position and first mining height information of the current hydraulic support; Receiving the liquid pressure in the lower cavity of the hydraulic support column and the pressure borne by the balance jack sent by the pressure sensor module; The hydraulic support status information display sub-station is specifically further used for: receiving the compression displacement of the current hydraulic support sent by the ranging sensor module; Converting the compression displacement into the second mining height information of the current hydraulic support; Correcting the first mining height information according to the second mining height information; wherein, correcting the first mining height information according to the second mining height information includes: judging whether the second mining height information is consistent with the first mining height information; if not, continuing to judge whether the difference between the second mining height information and the first mining height information is within the specified threshold range; if so, taking the average value of the second mining height information and the first mining height information to update the first mining height information; The hydraulic support status information display sub-station is specifically further used for: Receiving the moving distance of the hydraulic support sent by the stroke sensor module; Calculating the relative position information between the current hydraulic support and the shearer according to the moving distance; Correcting the first position information based on the relative position information; A scraper conveyor is arranged in the open-off cut roadway in front of the fully mechanized coal mining face, and a shearer is arranged on the scraper conveyor, and the shearer can move back and forth along the scraper conveyor; The monitoring system includes multiple hydraulic supports, and the hydraulic supports are located on the side of the scraper conveyor away from the fully mechanized coal mining face; A set of the hydraulic support status information acquisition device is arranged on each hydraulic support, the ranging sensor module is installed at the front end of the hydraulic support base, the stroke sensor module is installed at the front end of the hydraulic support base, the pressure sensor module is installed on the lower cavity of the column and both cavities of the balance jack, and the acceleration sensor module is installed on the top beam, base and rear connecting rod of the hydraulic support; The hydraulic support status information display sub-station is arranged on the hydraulic support; The gateway monitoring center is arranged in the upper gateway, and data is transmitted between the hydraulic support status information display sub-station and the gateway monitoring center in a wireless communication manner; The monitoring system further includes: a main station for displaying hydraulic support information, which is used to receive the processed data sent by the hydraulic support status information display sub-station, display the working and communication connection status of the hydraulic support status information acquisition device, and send the received processed data to the gateway monitoring center; The hydraulic support status information acquisition device is specifically used for: acquiring the real-time status information of the hydraulic support; monitoring whether the data of the status information is within the first threshold range; if the data is within the first threshold range, the status information is periodically sent to the hydraulic support status information display sub-station; if the data is not within the first threshold range, the alarm mechanism of the hydraulic support information acquisition device is triggered, and the current status information is sent to the hydraulic support status information display sub-station, so that the hydraulic support status information display sub-station sends an alarm signal through a buzzer or a display screen.

2. The monitoring system according to claim 1, characterized in that The monitoring system further includes: a ground monitoring center, which is used to receive and display the working status of the hydraulic supports sent by multiple gateway monitoring centers.

3. The monitoring system according to claim 1, wherein Data is transmitted between the hydraulic support status information acquisition device and the hydraulic support status information display sub-station and / or the gateway monitoring center in a wireless communication manner, wherein the wireless communication manner includes a wireless communication technology based on LoRa.

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