Ventilation environment multi-parameter inspection device for coal mine

Abstract

The invention discloses a ventilation environment multi-parameter inspection device for a coal mine, which comprises a multi-parameter tester, a data acquisition terminal, an Led screen and a plurality of RFID tag cards, and is characterized in that the multi-parameter tester can read the RFID tag cards to obtain the current position of the multi-parameter tester and transmit gas parameter information detected at the current position to the data acquisition terminal; the multi-parameter tester comprises an upper machine body and a lower machine body, a magnetic attraction power-on structure is arranged between the upper machine body and the lower machine body, and the upper machine body is provided with a wind speed and wind direction detection module; the lower machine body is provided with a control module, a gas detection module, a display module, a key module, a wireless communication module and an RFID module. According to the invention, the ultrasonic sensing technology, the laser sensing technology, the Internet of Things communication technology and the radio frequency identification technology are deeply fused, a multi-parameter inspection safety monitoring network is constructed, and the monitoring effect and the monitoring reliability of coal mine gas are improved.

Description

Technical Field

[0001] This invention belongs to the field of coal mine safety technology, specifically relating to a multi-parameter inspection device for ventilation environment in coal mines. Background Technology

[0002] In the field of coal mine safety, ventilation is the first line of defense concerning the safety of underground workers and the sustainability of production. While monitoring methane (the main component of gas) is important, a truly safe underground environment assessment involves much more than that. The effectiveness of ventilation, the accumulation of toxic and harmful gases (such as carbon monoxide and hydrogen sulfide), the adequacy of oxygen levels, and the concentration of carbon dioxide together constitute a complex and dynamically changing matrix of safety parameters.

[0003] Currently, gas detection primarily focuses on methane detection, typically using portable methane detectors. These portable detectors are convenient for workers to carry and measure methane concentrations at their locations, theoretically reducing the risk of accidents. However, existing portable detectors have limited functionality, and their limitations and management deficiencies are becoming increasingly apparent: First, most existing equipment detects only a single gas or a few gases, failing to comprehensively assess the overall safety status of the ventilation environment; second, measurement data is only displayed locally and cannot be uploaded to the monitoring center in real time, creating "information silos" and preventing command personnel from simultaneously grasping the real-time environmental conditions of different areas; third, the monitoring center cannot effectively supervise and track workers in real time to confirm whether they have followed the prescribed routes, times, locations, and frequency of checks, leading to the possibility of missed detections. This significantly reduces the reliability and effectiveness of gas detection, impacting the monitoring center's overall gas monitoring performance. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-parameter inspection device for ventilation environment in coal mines, which solves the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-parameter inspection device for ventilation environment in coal mines, comprising a multi-parameter measuring instrument, a data acquisition terminal, an LED screen, and multiple RFID tags. The multiple RFID tags are respectively installed at various detection locations in the mine shaft. The multi-parameter measuring instrument is communicatively connected to the data acquisition terminal, and the data acquisition terminal is communicatively connected to the LED screen. The multi-parameter measuring instrument can read the RFID tags to obtain its current location and transmit the gas parameter information detected at the current location to the data acquisition terminal. The multi-parameter measuring instrument includes an upper body and a lower body. The unit is equipped with a magnetic attraction and power-conducting structure. The upper body has a wind speed and direction detection module, which is used to detect the wind speed and direction in the environment. The lower body has a control module, a gas detection module, a display module, a button module, a wireless communication module, and an RFID module. The control module is connected to the wind speed detection module, gas detection module, display module, button module, wireless communication module, and RFID module respectively. The gas detection module is used to detect the concentration of methane, carbon monoxide, carbon dioxide, hydrogen sulfide, and oxygen in the air. The wireless communication module is used to connect to a data acquisition terminal. The RFID module is used to read RFID tags.

[0006] As an optional implementation of the above technical solution, the lower body is provided with a balance verification module, which is connected to the control module. The balance verification module is used to verify the information of each gas parameter based on the correlation between the gas parameters detected by the gas detection module, and to obtain abnormal values ​​of the gas parameter information.

[0007] As an optional implementation of the above technical solution, the lower body is provided with an environmental compensation module, which is connected to the control module. The environmental compensation module is used to predict and adaptively compensate for the drift trend of each gas parameter based on the gas parameter information detected by the gas detection module, and dynamically correct the measurement deviation of each gas parameter.

[0008] As an optional implementation of the above technical solution, the magnetic attraction power-conducting structure includes a first magnetic attraction port and a second magnetic attraction port that cooperate with each other. The first magnetic attraction port is located at the bottom of the upper body, and the second magnetic attraction port is located at the top of the lower body.

[0009] As an optional implementation of the above technical solution, the upper body includes a base platform, connecting columns and an upper cover plate. The base platform and the upper cover plate are connected by several connecting columns. The wind speed and wind direction detection module is set on the base platform, and the first magnetic insertion port is set at the bottom of the base platform.

[0010] As an optional implementation of the above technical solution, the wind speed and direction detection module includes a PCB circuit board and four ultrasonic probes. The four ultrasonic probes are arranged in a ring on the PCB circuit board, which is located inside the base platform. All four ultrasonic probes are exposed on the top surface of the base platform.

[0011] As an optional implementation of the above technical solution, the lower body is provided with a gas chamber, the gas detection module is disposed in the gas chamber, and an air inlet hole communicating with the gas chamber is opened on the surface of the lower body.

[0012] As an optional implementation of the above technical solution, the gas chamber is provided with a breathable membrane on the side facing the air inlet.

[0013] As an optional implementation of the above technical solution, the lower body is provided with a battery chamber, and the battery chamber is provided with a potted lithium battery.

[0014] As an optional implementation of the above technical solution, the display module includes a transparent panel, a display screen, and a display bracket arranged in sequence, with the display bracket fixed inside the lower body.

[0015] As an optional implementation of the above technical solution, the upper body and the lower body are connected by a snap-fit.

[0016] As an optional implementation of the above technical solution, the data acquisition terminal is connected to the LED screen via Bluetooth.

[0017] The beneficial effects of this invention are as follows: This invention provides a multi-parameter inspection device for ventilation environment in coal mines, which integrates real-time multi-parameter gas detection, wireless data transmission and intelligent verification. It deeply integrates ultrasonic sensing technology, laser sensing technology, Internet of Things communication technology and radio frequency identification technology to build a safety monitoring network for multi-parameter inspection, which is conducive to improving the monitoring effect and reliability of coal mine gas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a multi-parameter inspection device for ventilation environment in coal mines according to one embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of a multi-parameter measuring instrument in one embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of a multi-parameter measuring instrument in one embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the first magnetic insertion port in one embodiment of the present invention; Figure 5This is a control block diagram of a multi-parameter measuring instrument in one embodiment of the present invention.

[0019] In the diagram: 1-Multi-parameter measuring instrument; 2-Data acquisition terminal; 3-LED screen; 4-RFID tag card; 101-Upper body; 102-Lower body; 103-Wind speed and direction detection module; 104-Control module; 105-Gas detection module; 106-Display module; 107-Button module; 108-Wireless communication module; 109-RFID module; 110-Balance verification module; 111-Environmental compensation module; 112-First magnetic insertion port; 113-Base platform; 114-Connecting column; 115-Upper cover plate; 116-PCB circuit board; 117-Ultrasonic probe; 118-Air inlet hole; 119-Ventilating membrane; 120-Encapsulated lithium battery; 121-Transparent panel; 122-Display screen; 123-Display bracket. Detailed Implementation

[0020] like Figures 1-5 As shown in the figure, this embodiment provides a multi-parameter inspection device for ventilation environment in coal mines. It integrates real-time detection of multi-parameter gas, wireless data transmission and intelligent verification. It deeply integrates ultrasonic sensing technology, laser sensing technology, Internet of Things communication technology and radio frequency identification technology to build a safety monitoring network for multi-parameter inspection, which is conducive to improving the monitoring effect and reliability of coal mine gas.

[0021] like Figure 1 As shown, the inspection device includes a multi-parameter measuring instrument 1, a data acquisition terminal 2, an LED screen 3, and multiple RFID tags 4. The multiple RFID tags 4 are respectively installed at various detection locations in the mine. The multi-parameter measuring instrument 1 is communicatively connected to the data acquisition terminal 2, and the data acquisition terminal 2 is communicatively connected to the LED screen 3. The multi-parameter measuring instrument 1 can read the RFID tags 4 to obtain its current location and transmit the gas parameter information detected at the current location to the data acquisition terminal 2. The data acquisition terminal 2 then transmits the gas parameter information to the LED screen 3 via Bluetooth.

[0022] The multi-parameter measuring instrument 1 is carried by the staff, and various RFID tags 4 are deployed at key detection locations underground. The data acquisition terminal 2 is used in conjunction with the multi-parameter measuring instrument 1. The RFID tags 4 are coded and securely installed at all key locations in the mine that require routine inspection and monitoring, such as the entrance to the mining face, return airway, electromechanical room, and near the main ventilation fan, forming a passive positioning network covering the entire mine. The multi-parameter measuring instrument 1 is the information sensing and processing center of the inspection device, the data acquisition terminal 2 is the data receiving terminal, and the LED screen 3 is displayed underground. The data acquisition terminal 2 and the LED screen 3 are connected in real time via Bluetooth.

[0023] like Figure 2 As shown, the multi-parameter measuring instrument 1 includes an upper body 101 and a lower body 102, with a magnetic attraction power-conducting structure between them. Specifically, the magnetic attraction power-conducting structure includes a first magnetic connector 112 and a second magnetic connector that cooperate with each other. The first magnetic connector 112 is located at the bottom of the upper body 101, and the second magnetic connector is located at the top of the lower body 102. This design takes into account the needs of functional integration, flexible use, and convenient maintenance. The upper body 101 and the lower body 102 are connected by a snap-fit. When the upper body 101 and the lower body 102 are connected, they are precisely aligned by magnetic attraction, and the first magnetic connector 112 and the second magnetic connector are automatically connected, instantly completing the physical connection, power supply, and data communication between the upper body 101 and the lower body 102, so that wind speed and direction data can be seamlessly accessed by the control module 104 of the lower body 102.

[0024] The upper body 101 is equipped with a wind speed and direction detection module 103, which is used to detect the wind speed and direction of the environment. The wind speed and direction detection module 103 adopts the ultrasonic measurement principle, which has the advantages of high measurement accuracy and low start-up speed.

[0025] like Figures 3-5 As shown, the lower body 102 is equipped with a control module 104, a gas detection module 105, a display module 106, a button module 107, a wireless communication module 108, and an RFID module 109. The control module 104 is connected to the wind speed detection module, the gas detection module 105, the display module 106, the button module 107, the wireless communication module 108, and the RFID module 109. The gas detection module 105 is used to detect the concentrations of methane, carbon monoxide, carbon dioxide, hydrogen sulfide, and oxygen in the air. The wireless communication module 108 is used to connect to the data acquisition terminal 2. The RFID module 109 is used to read RFID tags 4. The gas detection module 105 is used to collect and preliminarily process the concentrations of various key gases (methane, carbon monoxide, carbon dioxide, hydrogen sulfide, and oxygen) and convert them into digital information. The display module 106 is used to display the detected parameter information and equipment information in real time. The button module 107 is used to provide human-machine interaction. The wireless communication module 108 is responsible for sending data packets to the data acquisition terminal 2. The RFID module 109 is used to automatically read the unique location code in the RFID tag 4 when it approaches the detection location with the RFID tag 4, and obtain the gas parameter information of the current location through the gas detection module 105.

[0026] In one specific embodiment, the lower body 102 is equipped with a balance verification module 110, which is connected to the control module 104. The balance verification module 110 is used to verify the information of each gas parameter based on the correlation between the gas parameters detected by the gas detection module 105, and to obtain abnormal values ​​of the gas parameter information. This multi-parameter measuring instrument 1 can not only collect real-time data on the concentration of various gases such as temperature, humidity, carbon monoxide, oxygen, methane, carbon dioxide, and hydrogen sulfide, but also deeply integrates multi-parameter data fusion and cross-validation algorithms at the software level. By constructing inter-gas correlation models such as oxygen-carbon dioxide balance verification, it effectively identifies abnormal values ​​of gas parameter information, significantly improving data reliability and anti-interference ability.

[0027] The lower body 102 is equipped with an environmental compensation module 111, which is connected to the control module 104. The environmental compensation module 111 is used to predict and adaptively compensate for the drift trends of various gas parameters based on the gas parameter information detected by the gas detection module 105, and dynamically correct the measurement deviations of each gas parameter. The multi-parameter measuring instrument 1 has a built-in environmental compensation and intelligent calibration algorithm, which can dynamically correct the measurement deviations of the gas sensors based on real-time environmental parameters such as temperature, air pressure, and humidity. It also combines a machine learning regression model to predict and adaptively compensate for sensor drift trends, ensuring high accuracy and stability during long-term operation. Simultaneously, an edge computing architecture is adopted to perform data preprocessing, feature extraction, and anomaly detection at the device end, significantly reducing communication load and terminal response latency.

[0028] In terms of data transmission, the multi-parameter measuring instrument 1 supports Bluetooth Low Energy (BLE) intelligent connection management, featuring adaptive data compression and breakpoint resume mechanisms. It can dynamically adjust the transmission strategy based on signal strength and data volume, ensuring communication stability and data integrity in complex industrial environments. The multi-parameter measuring instrument 1 incorporates anomaly detection and predictive maintenance algorithms, which can identify sensor aging, sudden environmental changes, or potential leakage risks based on historical data trends, and instantly push early warning information to the data acquisition terminal 2.

[0029] like Figure 3As shown, in one specific embodiment, the upper body 101 includes a base platform 113, connecting columns 114, and an upper cover plate 115. The base platform 113 and the upper cover plate 115 are connected by several connecting columns 114. The wind speed and direction detection module 103 is disposed on the base platform 113, and the first magnetic insertion port 112 is disposed at the bottom of the base platform 113. The wind speed and direction detection module 103 includes a PCB circuit board 116 and four ultrasonic probes 117. The four ultrasonic probes 117 are arranged in a ring on the PCB circuit board 116, which is disposed inside the base platform 113. All four ultrasonic probes 117 are exposed on the top surface of the base platform 113. The base platform 113, the two connecting columns 114, and the upper cover plate 115 form a robust and well-ventilated protective frame. The ultrasonic probes 117 are located within the protective frame. The ultrasonic probes 117 use transmitted sound wave pulses to measure the time or frequency (Doppler transformation) difference at the receiving end to calculate wind speed and direction.

[0030] In one specific embodiment, the lower body 102 is provided with a gas chamber, and the gas detection module 105 is disposed in the gas chamber. An air inlet 118 communicating with the gas chamber is provided on the surface of the lower body 102. Preferably, a breathable membrane 119 is provided on the side of the gas chamber facing the air inlet 118. The lower body 102 is provided with a battery chamber, and a potted lithium battery 120 is disposed within the battery chamber. The potted lithium battery 120 supplies power to the various modules of the multi-parameter measuring instrument, enabling the multi-parameter measuring instrument 1 to operate continuously for more than 10 hours.

[0031] The display module 106 includes a transparent panel 121, a display screen 122, and a display bracket 123 arranged sequentially, with the display bracket 123 fixed inside the lower body 102. The gas detection module 105 of the lower body 102 is housed in an independent gas chamber, communicating with ambient air through an air inlet vent 118 on the surface of the lower body 102. The inside of the vent is covered with a high-performance breathable membrane 119, which ensures gas diffusion while effectively blocking dust and water droplets, protecting the internal precision sensors. This module integrates high-performance sensors for five key gases: methane, carbon monoxide, carbon dioxide, hydrogen sulfide, and oxygen, enabling monitoring of downhole gases.

[0032] During operation, staff members carry a multi-parameter measuring instrument 1 and a data acquisition terminal 2 into the mine. Following a predetermined inspection route, upon reaching a detection point equipped with an RFID tag 4, the RFID module 109 built into the multi-parameter measuring instrument 1 automatically reads the tag information within range, obtaining accurate "location check-in" data. Simultaneously, the wind speed and direction detection module 103 detects the wind speed and direction at that location, and the gas detection module 105 samples and analyzes the air at that location, obtaining complete environmental parameters including the concentration of various gases and temperature and humidity. The control module 104 immediately transmits the data to the data acquisition terminal 2 via the wireless communication module 108, and the data acquisition terminal 2 then transmits it to the LED screen 3 for real-time display of gas concentrations.

[0033] This invention employs four-probe ultrasonic wind speed sensing technology and a high-performance gas sensor to achieve accurate monitoring of various toxic and harmful gases in the underground mine environment; it also enables simultaneous detection of multiple parameters and wireless data transmission; it utilizes an intrinsically safe RFID tag card 4 for mining to clearly identify the location of the measurement data; and it achieves long-distance observation through real-time digital display on an LED screen 3.

[0034] In summary, the multi-parameter inspection device for ventilation environment in coal mines described in detail in this embodiment integrates multi-parameter sensing, real-time communication and intelligent analysis technologies to construct a multi-parameter inspection safety network. This provides strong technical support for achieving early warning of mine risks, precise process control and post-event traceability analysis, and is of great significance for promoting the development of the coal mining industry towards intelligence and inherent safety.

[0035] In the description of this invention, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. They can refer to fixed connections, detachable connections, or integral connections; they can be mechanical or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this invention. Furthermore, the specific features and structures described in the embodiments are included in at least one implementation method. Those skilled in the art can combine features from different implementation methods without contradiction. The scope of protection of this invention is not limited to the specific implementation methods described above. Based on the basic technical concept of this invention, implementation methods that can be conceived by those skilled in the art without creative effort are all within the scope of protection of this invention.

Claims

1. A multi-parameter inspection device for ventilation environment in coal mines, characterized in that, The system includes a multi-parameter measuring instrument (1), a data acquisition terminal (2), an LED screen (3), and multiple RFID tags (4). The multiple RFID tags (4) are respectively installed at various detection locations in the mine. The multi-parameter measuring instrument (1) is communicatively connected to the data acquisition terminal (2), and the data acquisition terminal (2) is communicatively connected to the LED screen (3). The multi-parameter measuring instrument (1) can read the RFID tags (4) to obtain its current location and transmit the gas parameter information detected at the current location to the data acquisition terminal (2). The multi-parameter measuring instrument (1) includes an upper body (101) and a lower body (102). A magnetic attraction and electrification structure is provided between the upper body (101) and the lower body (102). The upper body (101) is equipped with a wind speed and direction detection module (103). The detection module (103) is used to detect the wind speed and wind direction of the environment; the lower body (102) is provided with a control module (104), a gas detection module (105), a display module (106), a button module (107), a wireless communication module (108) and an RFID module (109). The control module (104) is connected to the wind speed detection module, the gas detection module (105), the display module (106), the button module (107), the wireless communication module (108) and the RFID module (109) respectively. The gas detection module (105) is used to detect the concentration of methane, carbon monoxide, carbon dioxide, hydrogen sulfide and oxygen in the air. The wireless communication module (108) is used to connect to the data acquisition terminal (2). The RFID module (109) is used to read RFID tag cards (4).

2. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The lower body (102) is provided with a balance verification module (110), which is connected to the control module (104). The balance verification module (110) is used to verify the information of each gas parameter based on the correlation between the gas parameters detected by the gas detection module (105) and to obtain abnormal values ​​of the gas parameter information.

3. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The lower body (102) is provided with an environmental compensation module (111), which is connected to the control module (104). The environmental compensation module (111) is used to predict and adaptively compensate for the drift trend of each gas parameter information based on the gas parameter information detected by the gas detection module (105), and dynamically correct the measurement deviation of each gas parameter information.

4. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The magnetic charging structure includes a first magnetic connector (112) and a second magnetic connector that cooperate with each other. The first magnetic connector (112) is located at the bottom of the upper body (101), and the second magnetic connector is located at the top of the lower body (102).

5. The multi-parameter inspection device for ventilation environment in coal mines according to claim 4, characterized in that, The upper body (101) includes a base platform (113), connecting columns (114) and an upper cover plate (115). The base platform (113) and the upper cover plate (115) are connected by several connecting columns (114). The wind speed and wind direction detection module (103) is set on the base platform (113). The first magnetic insertion port (112) is set at the bottom of the base platform (113).

6. The multi-parameter inspection device for ventilation environment in coal mines according to claim 5, characterized in that, The wind speed and direction detection module (103) includes a PCB circuit board (116) and four ultrasonic probes (117). The four ultrasonic probes (117) are arranged in a ring on the PCB circuit board (116). The PCB circuit board (116) is located inside the base platform (113), and the four ultrasonic probes (117) are exposed on the top surface of the base platform (113).

7. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The lower body (102) is provided with a gas chamber, and the gas detection module (105) is located in the gas chamber. An air inlet hole (118) communicating with the gas chamber is opened on the surface of the lower body (102).

8. The multi-parameter inspection device for ventilation environment in coal mines according to claim 7, characterized in that, The gas chamber is provided with a breathable membrane (119) on the side facing the air inlet (118).

9. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The lower body (102) is provided with a battery chamber, and the battery chamber is provided with a potted lithium battery (120); the display module (106) includes a transparent panel (121), a display screen (122) and a display bracket (123) arranged in sequence, and the display bracket (123) is fixed inside the lower body (102).

10. The multi-parameter inspection device for ventilation environment in coal mines according to claim 1, characterized in that, The data acquisition terminal (2) and the LED screen (3) are connected via Bluetooth.

Images