Intelligent personnel limiting device for mining working face

Abstract

The utility model provides an intelligent personnel limiting device for a mining working face, which relates to the technical field of mining safety monitoring devices and comprises an outer shell, a main control board, a positioning statistics module and a voice alarm module are arranged in the outer shell, and the main control board is electrically connected with the positioning statistics module and the voice alarm module respectively. An LED display unit is arranged on the outer wall of one side of the outer shell, omnidirectional antennas are arranged at the tops of the two ends of the outer shell, and the omnidirectional antennas are electrically connected with the positioning statistics module. According to the device, personnel in the working face are positioned and counted, the personnel are displayed through the LED display unit, an alarm is given through the voice alarm module when the number of personnel exceeds a limit value, the safety management level of the mining working face is effectively improved, the accident risk is reduced, meanwhile, the operation process is optimized, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine safety monitoring devices, in particular to an intelligent personnel limit device for a mining working face. Background Art

[0002] In mining operations, in order to ensure safety, the number of workers at the underground mining face must be strictly controlled according to the safety level of the mine.

[0003] However, the personnel management method adopted by some existing mines still relies on electronic notice boards to display the number of people in the working face. Its basic working mode is to use manual statistics or RFID technology to periodically collect personnel information, and display the current number of people through the LED screen of the electronic notice board to serve as a reminder when the mining working face is overcrowded. In this case, the electronic notice board, as a passive display terminal, lacks the real-time perception ability of personnel location and cannot accurately locate overcrowded personnel. It only displays numbers statically and lacks an effective early warning mechanism. It is easy to be ignored in harsh working environments. Therefore, the existing front-end display terminal is not only relatively simple in function, but also lacks real-time performance, resulting in a lack of effective immediate early warning management mechanism on site, which easily causes overload of personnel in the working face and increases safety hazards. If you want to locate and count the personnel in the mine more accurately, you need to introduce a background monitoring system, which greatly increases the complexity of the system.

[0004] In the disclosed invention patent - Coal Mine Personnel Positioning Signage System Based on RFID Technology (application number 201210588207.6), it is specifically disclosed that the ground control management unit is connected to the underground data acquisition and transmission unit through a data transmission network module. The underground data acquisition and transmission unit is composed of an identification card, a detection substation, an antenna, and a sensor. It can be seen that this patent uses radio frequency identification technology and computer network communication technology to realize functions such as monitoring and positioning of underground personnel. In the system, the front-end equipment only plays the function of radio frequency identification, and the back-end ground control management unit realizes mine personnel tracking and positioning management based on the data collected by the front-end. The system structure is complex and the functions realized are limited, and it is impossible to realize early warning in the case of overcrowding.

[0005] Therefore, a front-end display device that can realize personnel location statistics and accurate warning in overcrowded situations without relying on the back-end system is in urgent need of research. Utility Model Content

[0006] In response to the above-mentioned shortcomings of the existing technology, the utility model provides an intelligent limit device for mining working faces, which solves the technical problem that the existing technology uses electronic notice boards with single functions to fail to effectively manage and warn the workers of the mining working faces in real time.

[0007] The utility model provides an intelligent personnel limit device for a mining working face, comprising an outer shell;

[0008] A main control board, a positioning statistics module and a voice alarm module are provided in the outer shell, and the main control board is electrically connected to the positioning statistics module and the voice alarm module respectively;

[0009] An LED display unit is provided on the outer wall of one side of the outer shell, and omnidirectional antennas are provided on the tops of both ends of the outer shell. The omnidirectional antennas are electrically connected to the positioning statistics module.

[0010] Optionally, the outer shell includes an outer panel and a base, and the outer panel is hinged to the base;

[0011] The main control board, the positioning statistics module and the voice alarm module are all arranged in the base, and the LED display unit is arranged on the outer wall of the outer panel.

[0012] Optionally, the bottom of the outer panel is hinged to the bottom of the base via a hinge;

[0013] A plurality of connectors are provided at corresponding positions of the top of the outer panel and the top of the base, wherein the connectors are magnetic connectors or threaded connectors;

[0014] When the outer panel covers the base, the outer panel and the base are connected magnetically or threadedly via the connecting piece.

[0015] Optionally, the outer panel includes a first panel and a second panel;

[0016] The first panel is magnetically or threadedly connected to the top of the base through a plurality of the connecting members, and the main control board and the positioning statistics module are arranged in the base corresponding to the first panel;

[0017] The second panel is magnetically or threadedly connected to the top of the base through a connecting piece, and the voice alarm module is arranged in the base corresponding to the second panel.

[0018] Optionally, it is characterized in that the outer shell is made by welding 304 stainless steel material.

[0019] Optionally, the positioning statistics module includes a micro-processing unit;

[0020] The positioning and statistics module receives the coded wireless signal transmitted by the identification card carried by the staff through the omnidirectional antenna. The microprocessor unit uses the TOF algorithm based on the wireless signal to locate and count the staff, obtains the number information and location information of the staff, and sends it to the main control board.

[0021] Optionally, antenna holes are opened at the tops of both sides of the outer shell, the omnidirectional antenna is arranged corresponding to the antenna hole, and the omnidirectional antenna is electrically connected to the positioning statistics module through a feeder.

[0022] Optionally, the voice alarm module includes a voice control module and a speaker;

[0023] A bell mouth is provided on the outer wall of the outer shell, and the horn is arranged in the outer shell and corresponds to the bell mouth;

[0024] The main control board is electrically connected to the voice control module, and the voice control module is electrically connected to the speaker.

[0025] Optionally, the LED display unit includes an LED board and a display control board;

[0026] The main control board is electrically connected to the display control board, the display control board is electrically connected to the LED board, and the LED board is embedded in the outer wall of the housing;

[0027] The number of the LED boards is at least two.

[0028] Optionally, the device further includes a terminal;

[0029] The main control board is provided with a communication unit, and the main control board is connected to the terminal through the communication unit.

[0030] The utility model provides an intelligent personnel limit device for mining working faces. The device monitors the number of personnel in the working face in real time through a positioning and statistics module. Once the number of personnel reaches or exceeds a preset safety limit, the main control board activates a voice alarm module to issue a warning, thereby promptly notifying on-site personnel and management personnel to avoid safety hazards caused by overcrowding. The omnidirectional antenna and the positioning and statistics module cooperate to accurately locate the position of each person carrying an identification card in the working face, which helps to quickly determine the specific location of each person in an emergency and facilitate rescue operations. The LED display unit can clearly display the real-time number of personnel in the working face, providing intuitive information for on-site personnel and management personnel to facilitate management and decision-making. In addition, the device integrates the core components such as the main control board, positioning and statistics module, voice alarm module and LED display unit into the outer shell, making the entire device compact. The modular design of each functional unit is convenient for installation, replacement and maintenance. The above device can locate and count the personnel in the working face, display them through the LED display unit, and issue an alarm through the voice alarm module when the number of personnel exceeds the limit, effectively improving the safety management level of mining working faces, reducing accident risks, optimizing operation processes and improving production efficiency.

[0031] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic structural diagram of an intelligent personnel limit device for a mining working face in an embodiment provided in this application;

[0035] Figure 2 This is a front view of an intelligent personnel limit device for a mining working face in an embodiment provided in this application;

[0036] Figure 3 A top view of an intelligent personnel limit device for a mining working face in an embodiment provided in this application;

[0037] Figure 4 This is a schematic diagram of the GD32F450ZxT6 chip of the microprocessor unit in the intelligent limit device for mining working face in an embodiment provided in this application.

[0038] In the picture:

[0039] 1. Outer shell; 101. Outer panel; 1011. First panel; 1012. Second panel; 102. Base; 103. Hinge; 104. Connector;

[0040] 2. Main control board;

[0041] 3. Positioning statistics module;

[0042] 4. Voice alarm module;

[0043] 5. LED display unit;

[0044] 6. Omnidirectional antenna. DETAILED DESCRIPTION

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0047] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0048] The utility model provides an intelligent personnel limit device for mining working face, such as Figures 1 to 3 As shown, it includes an outer shell 1, wherein a main control board 2, a positioning statistics module 3 and a voice alarm module 4 are arranged inside the outer shell 1, and the main control board 2 is electrically connected to the positioning statistics module 3 and the voice alarm module 4 respectively; an LED display unit 5 is arranged on the outer wall of one side of the outer shell 1, and omnidirectional antennas 6 are arranged on the top of both ends of the outer shell 1, and the omnidirectional antenna 6 is electrically connected to the positioning statistics module 3.

[0049] The intelligent personnel limit device for mining working face provided by the present invention monitors the number of personnel in the working face in real time through the positioning and statistics module 3. Once the number of personnel reaches or exceeds the preset safety limit, the voice alarm module 4 is activated through the main control board 2 to issue a warning, thereby promptly notifying on-site personnel and management personnel to avoid safety hazards caused by overcrowding; the omnidirectional antenna 6 is used in conjunction with the positioning and statistics module 3 to accurately locate the position of each person carrying an identification card in the working face, which helps to quickly determine the specific position of each person in an emergency and facilitate rescue operations; the LED display unit 5 can clearly display the real-time number of personnel in the working face, providing on-site staff and managers with intuitive information, which is convenient for management and decision-making; and, the device integrates core components such as the main control board 2, positioning and statistics module 3, voice alarm module 4 and LED display unit 5 in the outer shell 1, so that the entire system structure is compact, and each functional unit adopts a modular design, which is easy to install, replace and maintain. The above device can locate and count the personnel in the working face, display them through the LED display unit 5, and sound an alarm through the voice alarm module 4 when the number of people exceeds the limit, effectively improving the safety management level of the mining working face, reducing the risk of accidents, and optimizing the operation process and improving production efficiency.

[0050] Specifically, in the above embodiment, the outer shell 1 includes an outer panel 101 and a base 102, and the outer panel 101 is hinged to the base 102; the main control board 2, the positioning statistics module 3 and the voice alarm module 4 are all arranged in the base 102, and the LED display unit 5 is arranged on the outer wall of the outer panel 101.

[0051] In this embodiment, the hinged outer panel 101 can be easily opened, which facilitates the inspection, maintenance or replacement of the main control board 2, positioning statistics module 3 and voice alarm module 4 inside the base 102 without the need to completely disassemble the entire device, saving maintenance time and labor costs; important electronic components are integrated into the base 102, so that the outer panel 101 can provide additional protection to prevent dust, moisture or accidental collisions from damaging internal components, thereby extending the service life of the equipment; the LED display unit 5 is set on the outer wall of the outer panel 101, so that on-site personnel can check important data such as the number of people at any time without additional operation.

[0052] Furthermore, the bottom of the outer panel 101 and the bottom of the base 102 are hinged by a hinge 103; a plurality of connectors 104 are provided at corresponding positions on the top of the outer panel 101 and the top of the base 102, wherein the connectors are magnetic or threaded connectors; when the outer panel 101 and the base 102 are covered, the outer panel 101 and the base 102 are magnetically attracted or threadedly connected by the connectors 104.

[0053] In this embodiment, the connector 104 can ensure that the outer panel 101 and the base 102 fit tightly together, and the device can be kept closed even in the case of vibration or slight impact, preventing the internal electronic components from being damaged by external interference; when the outer panel 101 and the base 102 are connected by the connector 104, the outer shell 1 can form a relatively sealed space, which helps to prevent dust, moisture or other pollutants from entering the interior of the device and keep the electronic components clean and dry; and the hinge 103 is arranged at the bottom of the outer shell 1, and the connector 104 is arranged at the top of the device, so the staff can only open the outer shell 1 at the top of the device. Then, maintenance and other operations can be performed on the electronic components in the outer shell 1. Compared with opening the outer panel 101 horizontally, opening it from the top of the device can reduce the space occupied during maintenance. The outer panel 101 only needs to be opened within the original use range of the device to complete the entire maintenance process; in one case, the connector 104 is a magnetic part, and the connector 104 provides a fast and tool-free opening and closing method, which is convenient for quick access to the interior of the device for inspection, maintenance or upgrading without the aid of other tools, thereby improving work efficiency; in another case, the connector 104 is a threaded connector, so that the outer panel 101 is threadedly connected to the base 102, and the connection is more secure.

[0054] Furthermore, the outer panel 101 includes a first panel 1011 and a second panel 1012; the first panel 1011 is magnetically or threadedly connected to the top of the base 102 through multiple connectors 104, and the main control board 2 and the positioning statistics module 3 are arranged in the base 102 corresponding to the first panel 1011; the second panel 1012 is magnetically or threadedly connected to the top of the base 102 through a connector 104, and the voice alarm module 4 is arranged in the base 102 corresponding to the second panel 1012.

[0055] In this embodiment, the outer panel 101 is not a complete panel. Based on the modular design of each functional unit in this application, the outer panel 101 is specifically divided into a first panel 1011 and a second panel 1012. The two panels together constitute the outer panel 101, wherein the area of ​​the first panel 1011 is larger than the area of ​​the second panel 1012. Specifically, the LED display unit 5 is arranged on the outer wall of the first panel 1011, the main control board 2 and the positioning statistics module 3 are arranged in the base 102 corresponding to the first panel 1011, and the voice alarm module 4 is arranged in the base 102 corresponding to the second panel 1012. Since the overall area of ​​the first panel 1011 is larger than the overall area of ​​the second panel 1012, the weight of the first panel 1011 is heavier. Therefore, more connecting parts 104 are provided on the top of the first panel 1011 to connect with the base 102, while only one connecting part 104 is provided on the top of the second panel 1012 for connection. The overall setting of the first panel 1011 and the second panel 1012 is based on the fact that under normal use, the main control board 2 and the positioning statistics module 3 mainly perform data processing and other tasks, and are usually not easily damaged. When the device finds that the number of people on the working surface exceeds the safety limit, it is necessary to issue an alarm reminder. Therefore, the voice alarm module 4 is a more frequently used device and is more prone to damage. Therefore, the staff only needs to open the connector 104 on the second panel 1012, and then open the second panel 1012 to replace the parts of the voice alarm module 4. The disassembly process is simple and quick, which greatly improves maintenance efficiency.

[0056] Furthermore, the outer shell 1 is made by welding 304 stainless steel.

[0057] In this embodiment, the outer shell 1 is welded from 304 stainless steel, offering high-temperature and corrosion resistance, enabling it to withstand erosion by ore particles in harsh environments. It also features waterproof and dustproof properties, ensuring long-term, stable operation of the equipment in these harsh environments. The design of the outer shell 1 must meet underground coal mine standards. It not only possesses the basic functions of a standard electrical box but also offers breakthroughs in environmental adaptability, providing reliable electrical support for mining operations and reducing downtime due to equipment failure.

[0058] Specifically, in the above embodiment, the positioning statistics module 3 includes a microprocessor unit; the positioning statistics module 3 receives the coded wireless signal transmitted by the identification card carried by the staff through the omnidirectional antenna 6, and the microprocessor unit uses the TOF algorithm based on the wireless signal to locate and count the staff, obtain the number information and location information of the staff and send it to the main control board 2.

[0059] The microprocessor unit specifically uses a chip model GD32F450ZxT6, and the chip structure is shown in the figure below. Figure 4As shown in Figure 2, the TOF (Time of Flight) algorithm is a commonly used distance measurement technology. Its basic principle is to calculate distance by measuring the time it takes for a signal, such as a light pulse or sound wave, to be transmitted and returned to a receiver. Specifically, when a signal is emitted from a sensor and reflected from a target object, the sensor receives the echo signal. By calculating the time difference between the signal transmission and reception and combining it with the signal's propagation speed, the distance between the sensor and the target object can be calculated.

[0060] In this embodiment, the TOF algorithm is used for precise positioning within the entire mining working face area through the microprocessor unit, and the personnel within the signal coverage area can be accurately located and the number of people can be counted, which helps to prevent overcrowding and ensure compliance with safety regulations; the TOF algorithm can provide high-precision location information to ensure accurate real-time location tracking of staff; the positioning statistics module 3 can respond instantly to changes in the identification card signal, and can quickly update the statistical results regardless of whether personnel enter or leave the working face, ensuring the timeliness of the data.

[0061] Specifically, in the above embodiment, antenna holes are opened on the tops of both sides of the outer shell 1, and the omnidirectional antenna 6 is provided corresponding to the antenna holes, and the omnidirectional antenna 6 is electrically connected to the positioning statistics module 3 through a feeder.

[0062] Among them, the omnidirectional antenna 6 is a type of antenna that radiates signals uniformly in all directions on the horizontal plane. Unlike directional antennas, the signal radiation of directional antennas has specific directionality and concentration, while the omnidirectional antenna 6 provides almost uniform radiation intensity throughout the entire 360-degree range, making it particularly suitable for application scenarios that need to cover the entire area rather than just a specific direction; the omnidirectional antenna 6 can be specifically designed to be vertically polarized or horizontally polarized, or a more complex polarization pattern, depending on the requirements of the usage scenario. It is often used in wireless communication networks, broadcasting, navigation systems, Wi-Fi networks, mobile communication base stations and other fields. Especially when a wide coverage range is required without strengthening a specific direction, its shape can be various forms, such as whip antennas, loop antennas, spiral antennas, etc. In actual deployment, the omnidirectional antenna 6 is usually installed at a higher position so that the signal can cover a larger area without obstruction.

[0063] In this embodiment, the omnidirectional antenna 6 is set on the top of the outer shell 1, and it is ensured that the omnidirectional antenna 6 can face all directions without obstruction, which can maximize the signal coverage range and ensure that the signal emitted by the identification card can be fully captured; the omnidirectional antenna 6 is directly connected to the positioning statistics module 3 through the feeder, which can ensure the stability and low latency of the signal transmission, thereby improving the accuracy of the positioning algorithm and achieving more accurate personnel positioning; the use of the feeder provides the stability and anti-interference ability of the physical connection, and can maintain the reliability of signal transmission even in harsh mining environments, reducing the possibility of system failure.

[0064] Specifically, in the above embodiment, the voice alarm module 4 includes a voice control module and a speaker; a speaker mouth is opened on the outer wall of the outer shell 1, and the speaker is arranged inside the outer shell 1 and corresponding to the speaker mouth; the main control board 2 is electrically connected to the voice control module, and the voice control module is electrically connected to the speaker.

[0065] In this embodiment, the voice control module is connected to the main control board 2, and can quickly respond to the instructions of the main control board 2, instantly play the preset voice alarm information, improve the timeliness of the alarm, and reduce response delays; according to the position and design of the trumpet mouth, directional or wide-area sound propagation can be achieved to ensure that the alarm information can cover all required areas; the speaker is set in the outer shell 1 and corresponds to the trumpet mouth, which can protect the speaker from the influence of the external environment, and is convenient for regular maintenance or quick replacement when necessary.

[0066] Specifically, in the above embodiment, the LED display unit 5 includes an LED single board and a display control board; the main control board 2 is electrically connected to the display control board, the display control board is electrically connected to the LED single board, and the LED single board is embedded in the outer wall of the outer shell 1; the number of LED single boards is at least two.

[0067] Among them, the specification of the LED single board is 32*64 dot matrix, the number of LED single boards can be multiple, specifically 6 in this application, and the LED display unit 5 is used to display the number of people currently in the restricted area, the number of people who can enter the area and whether it is in an overcrowded state.

[0068] In this embodiment, the electrical connection between the display control board and the main control board 2 ensures that the LED display unit 5 can receive and update information in real time, whether it is a change in the number of personnel or an update of the system status, it can be immediately reflected to on-site staff and managers; the LED single board is embedded in the outer wall of the outer shell 1, which can protect the display unit from the influence of adverse factors such as dust, moisture, vibration, etc. that may exist in the mining environment, extend its service life, and ensure that it can still work stably under harsh conditions; the embedded LED single board design not only saves space, but also makes the entire device look more tidy and integrated, while also reducing the safety hazards that may be caused by external protruding components; the modular design of the LED single board and the display control board makes maintenance and replacement easier. When a problem occurs in a certain part, it can be replaced separately without replacing the entire display unit, reducing maintenance costs and time.

[0069] Specifically, in the above embodiment, the intelligent personnel limit device for mining working face in a mine further includes a terminal; a communication unit is provided on the main control board 2, and the main control board 2 is communicatively connected with the terminal via the communication unit.

[0070] In this embodiment, a communication unit is provided on the main control board 2, and when the communication unit establishes a communication connection with the terminal, the functionality and safety of the entire device will be significantly improved, so as to obtain the entry and exit of personnel on the working face in real time to ensure that the number of personnel on the working face does not exceed the safety limit; the main control board 2 can send instructions to the terminal through the communication unit to realize remote operation, such as turning on the alarm, locking the channel, etc.; the data collected by the terminal can be transmitted back to the main control board 2 in a timely manner, which is convenient for data analysis and historical records, and is helpful for accident investigation and safety management; when the number of personnel exceeds the preset threshold, the system can immediately issue an alarm to remind management personnel to take measures to evacuate personnel, prevent accidents caused by crowding or overcrowding, reduce the need for human supervision, reduce management costs, and improve work safety and efficiency.

[0071] The specific working steps of the intelligent personnel limit device for mining working faces provided by this application are as follows:

[0072] The limit device is installed at the entrance of the restricted area. First, the limit number is set on the limit device. The warning value and the overcrowding alarm value can be set. After the setting is completed, the limit device enters the working state. According to the provisions of the mine safety operation regulations, all personnel entering the mine must carry an identification card with a positioning signal transmission function. The positioning and statistics module 3 in the limit device receives the wireless signal with a unique code emitted by the identification card carried by the personnel through the omnidirectional antenna 6, and realizes the accurate positioning and counting of the personnel entering the signal coverage area based on the TOF algorithm. At the same time, the information of the personnel who have entered the restricted area is displayed on the LED display unit 5 on the front of the device.

[0073] When the positioning statistics module 3 reads that the number of people entering the restricted area reaches the warning value, the main control board 2 is used to start the loudspeaker for early warning broadcast, wherein the broadcast content can be set; when the positioning statistics module 3 reads that the number of people entering the area reaches the overcrowding value, the main control board 2 is used to start the loudspeaker for alarm broadcast, wherein the broadcast content can be set; the limited-crowd device displays the distribution of people in the restricted area through the LED display unit 5; the early warning or alarm information issued by the loudspeaker can be intuitively received before the person enters the restricted area, thereby avoiding overcrowding in the restricted area; for those who enter the restricted area illegally without following the alarm reminder and cause overcrowding, the limited-crowd device will record the relevant alarm information and upload it to the terminal for processing.

[0074] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An intelligent personnel limit device for mining working face, characterized in that: comprising an outer shell (1); A main control board (2), a positioning statistics module (3) and a voice alarm module (4) are provided in the outer shell (1); the main control board (2) is electrically connected to the positioning statistics module (3) and the voice alarm module (4) respectively; An LED display unit (5) is provided on the outer wall of one side of the outer shell (1), and omnidirectional antennas (6) are provided on the tops of both ends of the outer shell (1), and the omnidirectional antennas (6) are electrically connected to the positioning statistics module (3); The positioning statistics module (3) includes a microprocessor unit; the positioning statistics module (3) receives a coded wireless signal transmitted by an identification card carried by a staff member via the omnidirectional antenna (6); the microprocessor unit locates and counts the staff member using a TOF algorithm based on the wireless signal, obtains the number information and position information of the staff member, and sends the information to the main control board (2).

2. The intelligent personnel limit device for mining working face according to claim 1 is characterized in that: The outer shell (1) comprises an outer panel (101) and a base (102), wherein the outer panel (101) is hinged to the base (102); The main control board (2), the positioning statistics module (3) and the voice alarm module (4) are all arranged in the base (102), and the LED display unit (5) is arranged on the outer wall of the outer panel (101).

3. The intelligent personnel limit device for mining working face according to claim 2 is characterized in that: The bottom of the outer panel (101) is hinged to the bottom of the base (102) via a hinge (103); A plurality of connectors (104) are provided at corresponding positions on the top of the outer panel (101) and the top of the base (102), wherein the connectors (104) are magnetic connectors or threaded connectors; When the outer panel (101) and the base (102) are covered, the outer panel (101) and the base (102) are connected magnetically or threadedly via the connecting piece (104).

4. The intelligent personnel limit device for mining working face according to claim 3 is characterized in that: The outer panel (101) includes a first panel (1011) and a second panel (1012); The first panel (1011) is magnetically or threadedly connected to the top of the base (102) via a plurality of connectors (104); the main control board (2) and the positioning statistics module (3) are arranged in the base (102) corresponding to the first panel (1011); The second panel (1012) is magnetically or threadedly connected to the top of the base (102) via a connecting piece (104), and the voice alarm module (4) is arranged in the base (102) corresponding to the second panel (1012).

5. The intelligent personnel limit device for mining working face according to any one of claims 1 to 4, characterized in that: The outer shell (1) is made by welding 304 stainless steel.

6. The intelligent personnel limit device for mining working face according to claim 1, characterized in that: Antenna holes are provided at the tops of both sides of the outer shell (1), the omnidirectional antenna (6) is arranged corresponding to the antenna holes, and the omnidirectional antenna (6) is electrically connected to the positioning statistics module (3) via a feeder line.

7. The intelligent personnel limit device for mining working face according to claim 1 is characterized in that: The voice alarm module (4) includes a voice control module and a speaker; A bell mouth is provided on the outer wall of the outer shell (1), and the bell is arranged inside the outer shell (1) and is arranged corresponding to the bell mouth; The main control board (2) is electrically connected to the voice control module, and the voice control module is electrically connected to the speaker.

8. The intelligent personnel limit device for mining working face according to claim 1, characterized in that: The LED display unit (5) comprises an LED board and a display control board; The main control board (2) is electrically connected to the display control board, the display control board is electrically connected to the LED board, and the LED board is embedded in the outer wall of the outer shell (1); The number of the LED boards is at least two.

9. The intelligent personnel limit device for mining working face according to claim 1, characterized in that: The device further includes a terminal; The main control board (2) is provided with a communication unit, and the main control board (2) is communicatively connected with the terminal via the communication unit.

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