An intelligent downhole safety monitoring system

Abstract

This invention discloses an intelligent underground safety monitoring system, comprising an industrial control host located in a surface control room, a switch connected to the industrial control host and transmitting information, several control substations located underground, an operating host connected to the control substations, an intrinsically safe switch located underground connected to the control substations via signals, and the intrinsically safe switch connected to the switch in the surface control room. This invention features stable performance, small size, and the ability to remotely disable unnecessary protection functions based on site conditions. It implements nine types of protection, including deviation, emergency stop, tension, coal pile-up, temperature, smoke, speed, tear, and overheating water spraying, and features control modes such as reverse coal flow start, forward coal flow start, forward coal flow stop, global stop, and single-unit start / stop. Remote control enables unattended operation underground. Along-line inspections not only include video calls and video recording but also enable button-based emergency stop or pull-line emergency stop interlocking.

Description

Technical Field

[0001] This invention relates to an intelligent downhole safety monitoring system, belonging to the field of intelligent control technology. Background Technology

[0002] Coal mine transportation systems primarily rely on belt conveyors. To ensure the normal operation of these conveyors, on-site inspection personnel are required. Especially underground in coal mines, the working environment of belt conveyors is harsh, posing health risks to on-site inspection personnel. Furthermore, the high labor intensity of these personnel increases the risk of production safety accidents. To achieve unmanned operation of underground belt conveyors and effectively improve mine safety and automation control, existing technologies have proposed design solutions. For example, patent 202121261010.2 describes an intelligent online monitoring system for coal mine belt conveyors. This system includes a computer data processing center, an audible and visual alarm module, a control output module, and a belt conveyor. The belt conveyor is equipped with a sound recognition module, an image recognition module, and a temperature recognition module. These modules are communicatively connected to the input of the computer data processing center. The audible and visual alarm module and the control output module are electrically connected to the output of the computer center. The control output module is also electrically connected to the belt conveyor.

[0003] However, belt conveyors require monitoring of numerous aspects during transport, making the aforementioned patented technical solutions unsuitable for unmanned operation in practice. Furthermore, equipment control necessitates both remote monitoring and centralized / individual control underground, neither of which can be achieved with the aforementioned solutions. Additionally, underground drainage and ventilation require system monitoring, primarily conducted from the surface monitoring room, with virtually no monitoring available underground, posing a significant safety hazard. Summary of the Invention

[0004] To meet the requirements of modern mines nationwide, this invention implements intelligent mechanization of equipment and highly integrated automated software optimization to improve the safety assurance capabilities of enterprise production and transportation, achieving the goals of "reducing manpower and increasing efficiency" and "safety through automation." It promotes the application of advanced technologies and management concepts, actively carrying out the "mechanization to replace manpower, automation to reduce manpower" science and technology-driven safety campaign. This aims to achieve mechanization and automation of the mine production process, informatization and intelligentization of the production system, and improve the overall level of enterprise safety production. Through video monitoring and sequential control, the transportation system, ventilation system, and water pump system of the mining and tunneling faces can be remotely and centrally controlled, reducing the number of personnel in mining and tunneling operations. This achieves automated remote control and real-time monitoring, prioritizing safety to improve enterprise safety production. To address the above issues, this invention researches and provides an intelligent underground safety monitoring system. Based on the requirements of underground operation, it achieves monitoring above ground while simultaneously enabling centralized and individual control operations underground. This combines automatic and manual control, achieving not only unattended operation but also higher safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent underground safety monitoring system, comprising an industrial control host installed in a surface control room and an intrinsically safe operating host installed underground. The industrial control host and the operating host transmit information through switches located above and below ground. Several control substations are installed at the underground equipment, each control substation being matched with different underground control equipment. The control substations are connected to one or more combinations of emergency stop interlocking loudspeaker telephones, dust concentration sensors, water level sensors, methane concentration sensors, explosion-proof cameras, smoke sensors, explosion-proof solenoid valves, emergency stop switches, and start / stop sensors installed around the underground equipment, and / or temperature sensors, deviation sensors, tension sensors, tear sensors, coal level switches, and speed sensors installed on the underground equipment. Simultaneously, the control substations are connected to and control the motors, fans, or water pumps of the underground equipment.

[0006] Furthermore, the industrial control host connects to a printer, a paging microphone, and a hard disk storage device to establish a remote monitoring center for mining equipment, monitor equipment operation, realize remote monitoring on the ground, and synchronous automatic control underground. The industrial control host collects, queries, statistically analyzes, and prints the operating data, curves, event information, and operation records of the field equipment, and provides audible and visual alarms for faults, as well as one-button start and stop operations.

[0007] Furthermore, the control substation includes a CPU processor, an operation control module, a communication interface, and a voice alarm module. The CPU processor is connected to the operation control module, which in turn is connected to an explosion-proof solenoid valve, a belt motor, a fan, and a water pump. The operation control module controls the motor and the explosion-proof solenoid valve according to instructions. The CPU processor is connected to an intrinsically safe color touchscreen, receiving input and displaying output. The CPU processor is also connected to the voice alarm module, which is connected to a communication and reporting unit module. This communication and reporting unit module is connected to a speaker via a power amplifier module, enabling communication, reporting, voice warning, and alarm functions along the line. The communication interface is connected to sensors.

[0008] Furthermore, the control substation is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100 Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals.

[0009] Furthermore, the control substation also includes a color touch LCD screen, and the control modes include starting the engine against the coal flow, starting the engine with the coal flow, and stopping the engine with the coal flow; it also includes a backup power supply to ensure normal communication of the equipment in the event of a power outage, and a high-definition camera built into the housing of the control substation to realize remote video monitoring.

[0010] Furthermore, the operating host includes a PLC controller, and a monitoring video display screen, a control screen, input components, a communication interface, and a voice module connected to the PLC controller. The control screen displays and sets the total number of units under centralized control, and provides a selection of centralized control host operating modes. It also displays centralized control and single control selection icons on the screen for direct switching between centralized control and single control modes. In centralized control mode, it provides centralized control start, centralized control stop, and emergency stop buttons; in single control mode, it provides start and stop buttons, with each button corresponding to a specific belt conveyor. The PLC controller aggregates multiple video input signals into a single optical signal and outputs it to the monitoring video display screen. The input video signals can be recorded, retrieved, and played back using a mouse. The PLC controller connects to… The system receives real-time monitoring signals from various control substations to monitor faults in the controlled equipment. When a fault occurs, the fault is displayed in text form on the control screen. It also monitors protection signals from various sensors in real-time, displaying the protection action in text form on the control screen and providing audible alarms via a voice module, power amplifier module, and speaker. A control panel is installed on the host unit, equipped with manual, automatic, start, stop, and protection interlock buttons, corresponding to those on the control screen. The input component receives parameters, control commands, or function calls from the operator. Function calls allow the operator to remotely set or cancel protection functions for connected devices based on site conditions using the host unit.

[0011] Furthermore, the centralized control host has the following operating modes: single control mode, centralized control mode, remote control mode, and maintenance mode. When the centralized control is switched to different modes, the corresponding text will be displayed on the control screen.

[0012] Furthermore, the operating host is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100 Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals.

[0013] Furthermore, the host computer is also equipped with a backup power supply to ensure normal communication in the event of a power outage.

[0014] Furthermore, the emergency stop interlocking loudspeaker is installed along the belt conveyor. The casing of the emergency stop interlocking loudspeaker is equipped with call, signal, and emergency stop buttons, as well as a pull cord. Inside the casing are a camera, a speaker, and a microphone. Pressing the emergency stop button or pulling the cord to issue an emergency stop interlock command controls the substation to stop. The signal buttons are used for point-to-point communication, calls, and voice warnings. The speaker is used to broadcast start-up warnings and fault alarms along the line, helping inspection personnel to promptly stop the belt conveyor when problems are discovered, preventing the situation from escalating. A built-in high-definition camera enables remote video monitoring of the area, and allows for video calls and recording of operators.

[0015] The beneficial technical effects of this invention are:

[0016] 1. The host machine boasts strong performance and stability, and its compact size allows for the simultaneous display of video and analog control screens. It integrates multiple devices and systems into a single management platform, enhancing system reliability and facilitating installation and operation. It also features a human-machine interface for easy parameter modification, function calls, and control command input. Users can remotely disable unnecessary protection functions based on site conditions.

[0017] 2. The control substation implements nine protection mechanisms, including deviation, emergency stop, tension, coal pile-up, temperature, smoke, speed, tearing, and overheating water spraying. It also features control modes such as reverse coal flow start-up, forward coal flow start-up, forward coal flow shutdown, global shutdown, and single unit start-stop. It operates in four modes: single control, maintenance, centralized control, and remote control. Voice alarms indicate the time of fault occurrence, faulty equipment number, and fault type. Backup power ensures normal communication of underground equipment in the event of a power outage, and remote control from the ground enables unattended operation underground.

[0018] 3. The emergency stop interlocking loudspeaker telephone enables inspection along the belt conveyor line. It not only allows for video calls and video recording, but also enables emergency stop via button or pull-line emergency stop interlocking. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1The system illustrates a novel intelligent underground belt conveyor monitoring system, comprising an industrial control host located in a surface control room, a switch connected to the industrial control host and transmitting information, several control substations located underground, an intrinsically safe operating host connected to the control substations, and an intrinsically safe switch located underground connected to the control substations via signals. The intrinsically safe switch is connected to the switch located in the surface control room. The control substations are connected to emergency stop interlocking loudspeaker telephones, dust concentration sensors, explosion-proof cameras, and smoke sensors installed around the belt conveyor, as well as temperature sensors, belt misalignment sensors, tension sensors, tear sensors, coal level switches, and speed sensors installed on the belt conveyor. They are also connected to explosion-proof solenoid valves, emergency stop switches, and start / stop sensors, which are electrically connected to the belt conveyor motor.

[0024] like Figure 1 The system illustrates an intelligent underground safety monitoring system. An industrial control host is installed in a surface control room, while an intrinsically safe operating host is installed underground. The industrial control host and the operating host transmit information via switches located above and below ground. Several control substations are installed at the underground equipment locations, each substation being matched with different underground control equipment. Each control substation connects to one or more combinations of emergency stop interlocking loudspeaker telephones, dust concentration sensors, water level sensors, methane concentration sensors, explosion-proof cameras, smoke sensors, explosion-proof solenoid valves, emergency stop switches, and start / stop sensors installed around the underground equipment, and / or temperature sensors, deviation sensors, tension sensors, tear sensors, coal level switches, and speed sensors installed on the underground equipment. Simultaneously, the control substation connects to and controls the motors, fans, or water pumps of the underground equipment.

[0025] The industrial control host in the control room above ground is connected to a printer, paging microphone and hard disk storage to establish a remote monitoring center for the belt conveyor in the mining area. This enables automatic control that synchronizes the operation of equipment remotely on the ground with that underground. The industrial control host collects, queries and statistically analyzes, prints the operating data, curves, event information and operation records of the field equipment, provides audible and visual alarms for fault points, and allows for one-button start and stop control.

[0026] The control unit is located at the local control center of the conveyor belt in the mining area, realizing various control functions such as manual, automatic, and maintenance of the transport line equipment. It synchronously monitors and automatically controls the equipment with the ground control center, collecting, storing, querying, and statistically analyzing on-site equipment operating data, curves, event information, operation records, audible and visual fault alarms, one-button start / stop operations, and monitoring equipment operation status. Explosion-proof cameras enable online visual management, real-time monitoring, and storage of the system.

[0027] The main control unit is connected to three channels, including the belt conveyor section, water pump and main fan, and auxiliary fan. The belt conveyor section is further divided into multiple belt conveyors. The belt misalignment sensor is used to control and prevent belt misalignment, the emergency stop switch is used for emergency stop protection, the tension sensor is used to detect belt tension, the tear sensor is used to prevent belt tearing, the coal level switch is used to prevent coal accumulation, the temperature sensor detects the temperature and enables overheating water spraying, the smoke sensor detects whether the smoke concentration exceeds the standard, the speed sensor detects the operating speed of the belt conveyor, the water level sensor detects the water level in the drainage well, and the methane concentration sensor detects the methane concentration and controls the exhaust air volume.

[0028] The equipment in this embodiment features modular installation, integrated design, simple overall structure, stable performance, flexible configuration, and convenient maintenance. It can realize a bottom-up monitoring system, scaling up from small to large, based on field devices, fieldbus, and field control. Reliable data transmission, backup, and storage security measures ensure the system's safe and reliable operation. Redundancy, fault tolerance, and backup capabilities are fully considered, and the system architecture is rationally designed to maximize system stability and reliability. The equipment adopts large-scale integration and standardized management, reducing unstable interconnections and fragmented components.

[0029] Example 2

[0030] As a specific design, the operating host includes a PLC controller, and a monitoring video display screen, a control screen, input components, a communication interface, and a voice module connected to the PLC controller. The control screen displays and sets the total number of units under centralized control, and provides a selection of centralized control host operating modes. It also displays centralized control and single control selection icons on the screen for direct switching between these modes. In centralized control mode, it provides centralized control start, centralized control stop, and emergency stop buttons; in single control mode, it provides start and stop buttons, with each button corresponding to a specific belt conveyor. The PLC controller aggregates multiple video input signals into a single optical signal and outputs it to the monitoring video display screen. The input video signals can be recorded, retrieved, and played back using a mouse. The device receives real-time monitoring signals from various control substations, monitors faults in the controlled equipment, and displays the fault information in text form on the control screen when it occurs. It also monitors protection signals from various sensors in real time, displaying the protection signals in text form on the control screen when they are activated, and provides audible alarms via a voice module, power amplifier module, and speaker. A control panel is installed on the host unit, equipped with manual, automatic, start, stop, and protection interlock buttons, corresponding to those on the control screen. The input component receives parameters, control commands, or function calls from the operator. Function calls allow the operator to remotely set or cancel protection functions for connected devices based on site conditions using the host unit.

[0031] The central control host has four operating modes: single control mode, central control mode, remote control mode, and maintenance mode. When the central control is switched to a different mode, the corresponding text will be displayed on the control screen.

[0032] The operating host is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals. The operating host also has a backup power supply to ensure normal communication in the event of a power outage.

[0033] The control panel uses a touch screen to reflect the entire process flow of the belt conveyor system. It can clearly observe the operation of each belt, as well as the interlocking relationship and operation sequence between belts. If a belt is running, the corresponding coal dynamics are visualized on the interface, realistically simulating the operation of the belt on site.

[0034] The total number of belts to be centrally controlled can be set via touchscreen or mouse. On the main screen, enter the total number of belts to be centrally controlled; the maximum number is 8. The central control host operates in four modes: single-control mode, centralized control mode, remote control mode, and maintenance mode. When switching to a different mode, corresponding text will be displayed on the screen. Since single-control and centralized control modes are commonly used, a single-control / central-control selection switch is designed on the screen for starting or stopping the belts individually or in a centralized manner. When operating in single-control mode, click on the belt to be started or stopped on the screen to bring up the operation interface. Click the start button to start the belt and the stop button to stop it. When operating in centralized control mode, first select the starting method as reverse start or forward start, then click the centralized start, centralized stop, or emergency stop buttons on the screen for one-click start / stop operation. When operating in centralized control forward start, if there is coal on the belt, a window will pop up saying "System has coal, only reverse start is possible," indicating which belt contains coal. The screen displays the operating mode and control mode of each belt next to it, along with the control mode of the field control substation. As the belt starts, it gradually displays start-up warning, main / auxiliary delay, self-protection delay, and normal operation indications. The control mode of the control substation is displayed on the host computer as maintenance mode, single-control mode, or centralized control mode. If interlocked belt protection is activated during operation, a fault indication screen will be displayed.

[0035] Parameter setting function: Enter the parameter setting window, where you can read, set, and write the parameters of the control substation.

[0036] Extension address: refers to the station number of each control substation, ranging from 1 to 8.

[0037] Start-up method: There are two options: "reverse start" and "forward start", which means starting the engine against the coal flow and starting with the coal flow.

[0038] Speed ​​limit: The speed protection limit value. When the speed value detected by the machine exceeds the limit value, the machine will protect its speed. The range is 0 to 8.0 m / s.

[0039] Speed ​​lower limit: The lower limit value for speed protection. When the speed value detected by the machine is lower than the lower limit value, the machine will activate speed protection. The range is 0 to 8.0 m / s.

[0040] Tension limit: The upper limit value of the belt tension protection of this machine. When the tension value detected by the machine exceeds the upper limit value, the machine will perform tension protection. The range is 0 to 9999 kg.

[0041] Lower tension limit: The lower limit value of belt tension protection of this machine. When the tension value detected by the machine is lower than the lower limit value, the machine will perform tension protection. The range is 0 to 9999 kg.

[0042] Warning time: Set the time from the start of the vehicle to the start of the main motor, ranging from 0 to 999 seconds.

[0043] Main motor start-up delay: Set the delay time from the start of the main motor to the start of the auxiliary motor, ranging from 0 to 999 seconds;

[0044] Self-protection delay: Sets the time during which the speed of the main and auxiliary motors will not be detected after they start, ranging from 0 to 999 seconds.

[0045] Parking delay: Set the parking delay time for this machine, ranging from 0 to 999 seconds.

[0046] Coal-free stop delay: Set the delay time for coal-free stop on the conveyor belt, ranging from 0 to 999 seconds;

[0047] No-coal detection delay: Set the delay time for no-coal detection, ranging from 0 to 999 seconds;

[0048] Start / stop detection delay: Set the delay time for motor feedback, ranging from 0 to 999 seconds;

[0049] Temperature detection delay: Set the delay time for temperature protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0050] Smoke detection delay: Set the delay time for smoke protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0051] Tear detection delay: Set the delay time for tear protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0052] Coal pile detection delay: Set the delay time for the coal pile protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0053] Tape breakage detection delay: Set the delay time for tape breakage protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0054] Speed ​​detection delay: Set the delay time for speed protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0055] Tension detection delay: Set the delay time for the tension protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0056] Misalignment detection delay: Set the delay time for misalignment protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0057] Emergency stop detection delay: Set the delay time for emergency stop protection action, ranging from 0 to 999 seconds, where 0 means the protection is disabled.

[0058] Interlock Detection Delay: Sets the delay time for the interlock protection action, ranging from 0 to 999 seconds, where 0 disables the protection. This function is generally used when there is an interlock relationship with other equipment such as PLCs.

[0059] Read function: Enter the extension number to be read and click the read button to read the parameter settings of that extension.

[0060] Write function: After setting the parameters for this extension, click the write button to download the values ​​to the extension station.

[0061] Disabling function: Used to temporarily disable the protection alarm; the disabling function will be lost upon the next vehicle restart.

[0062] Example 3

[0063] As a specific design, the control substation includes a CPU processor, an operation control module, a communication interface, and a voice alarm module. The CPU processor is connected to the operation control module, which in turn connects to a belt motor, an explosion-proof solenoid valve, and a control motor, controlling the motor and the explosion-proof solenoid valve according to instructions. The CPU processor is connected to an intrinsically safe color touchscreen, receiving input and displaying output. The CPU processor is also connected to the voice alarm module, which is connected to a communication and reporting unit module. The communication and reporting unit module is connected to a speaker via a power amplifier module, enabling line-of-line communication, reporting, voice warning, and alarm functions. The communication interface is connected to sensors.

[0064] The control substation is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100 Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals.

[0065] The control substation also includes a color touch LCD screen, and the control modes include starting the engine against the coal flow, starting the engine with the coal flow, and stopping the engine with the coal flow; it also includes a backup power supply to ensure normal communication of the equipment in the event of a power outage, and a high-definition camera is built into the housing of the control substation to realize remote video monitoring.

[0066] Color touchscreen LCD display; 9 protection functions including deviation, emergency stop, tension, coal pile-up, temperature, smoke, speed, tear, and overheating water spray; Control methods: reverse coal flow start, forward coal flow start, forward coal flow stop, global stop, single unit start / stop, etc.; Operating modes: single control, maintenance, centralized control, and remote control. Features line-of-sight communication, point marking, voice warning, and alarm functions; strong resistance to background noise and clear sound; Voice alarm prompts: fault occurrence time, faulty equipment number, and fault type; Backup power supply ensures normal communication of underground equipment in the event of a power outage. Ground remote control: unattended operation underground; Function shielding: administrators can lock and unlock protection functions; Video monitoring function: built-in high-definition camera for remote video monitoring; Video function: video call and video recording of operators.

[0067] Example 4

[0068] As a specific design, the emergency stop interlocking loudspeaker is installed along the belt conveyor. The casing of the loudspeaker includes call, signal, and emergency stop buttons, as well as a pull cord. Inside the casing are a camera, a speaker, and a microphone. Pressing the emergency stop button or pulling the cord to issue an emergency stop interlock command controls the substation to stop. The signal buttons are used for point-to-point communication, calls, and voice warnings. The speaker is used to broadcast start-up warnings and fault alarms along the line, helping inspection personnel to promptly stop the belt conveyor when problems are discovered, preventing the situation from escalating. A built-in high-definition camera enables remote video monitoring of the area, and allows for video calls and recording of operators.

[0069] Furthermore, this system is scalable, with reserved expansion interfaces for easy integration with subsequent systems. It can be smoothly expanded and upgraded to accommodate future business growth and changes, minimizing adjustments to the system architecture and existing equipment (such as local fan control, local water pump control, etc.). Figure 1 (As shown in the diagram). The system aims to fully utilize existing resources and minimize overall system investment. The equipment is designed to meet the specific conditions of the mine's underground production site, primarily implementing a control method of "centralized surface control as the main approach, supplemented by on-site underground maintenance." It is designed for ease of management and maintenance; the control system design should consider reducing the workload of equipment management and maintenance to avoid situations where timely maintenance is impossible due to a large number of devices.

[0070] As can be seen from the above embodiments, the present invention has the following advantages:

[0071] 1. The host machine boasts strong performance and stability, and its compact size allows for the simultaneous display of video and analog control screens. It integrates multiple devices and systems into a single management platform, enhancing system reliability and facilitating installation and operation. It also features a human-machine interface for easy parameter modification, function calls, and control command input. Users can remotely disable unnecessary protection functions based on site conditions.

[0072] 2. The control substation implements nine protection mechanisms, including deviation, emergency stop, tension, coal pile-up, temperature, smoke, speed, tearing, and overheating water spraying. It also features control modes such as reverse coal flow start-up, forward coal flow start-up, forward coal flow shutdown, global shutdown, and single unit start-stop. It operates in four modes: single control, maintenance, centralized control, and remote control. Voice alarms indicate the time of fault occurrence, faulty equipment number, and fault type. Backup power ensures normal communication of underground equipment in the event of a power outage, and remote control from the ground enables unattended operation underground.

[0073] 3. The emergency stop interlocking loudspeaker telephone enables inspection along the belt conveyor line. It not only allows for video calls and recording, but also enables emergency stop via button or pull-cord interlocking. Furthermore, the emergency stop interlocking loudspeaker telephone is installed along the belt conveyor line. The telephone housing is equipped with call, signal, and emergency stop buttons, as well as a pull cord. Inside the housing are a camera, speaker, and microphone. Pressing the emergency stop button or pulling the cord to lock the emergency stop controls the substation to stop. The signal button is used for point-to-point communication, calls, and voice warnings. The speaker is used to broadcast start-up warnings and fault alarms along the line, helping inspection personnel to promptly stop the belt conveyor when problems are discovered, preventing the situation from escalating. The built-in high-definition camera enables remote video monitoring of the area, and allows for video calls and recording of operators.

[0074] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent downhole safety monitoring system, comprising an industrial control host installed in a surface control room, characterized in that: An intrinsically safe operating host is installed underground. The industrial control host and the operating host transmit information through a switch located above and below ground. Several control substations are installed at the underground equipment, each control substation being matched with different underground control equipment. The control substations are connected to one or more combinations of emergency stop interlocking loudspeaker telephones, dust concentration sensors, water level sensors, methane concentration sensors, explosion-proof cameras, smoke sensors, explosion-proof solenoid valves, emergency stop switches, and start / stop sensors installed around the underground equipment, and / or temperature sensors, deviation sensors, tension sensors, tear sensors, coal level switches, and speed sensors installed on the underground equipment. Simultaneously, the control substation connects to and controls the motors, fans, or water pumps of the downhole equipment; the operating host includes a PLC controller, as well as a monitoring video display screen, a control screen, input components, a communication interface, and a voice module connected to the PLC controller. The control screen displays and sets the total number of units under centralized control, and provides a selection of centralized control host operating modes. It also displays centralized control and single control selection icons on the screen for direct switching between centralized control and single control modes. In centralized control mode, there are centralized control start, centralized control stop, and emergency stop buttons. In single control mode, there are start and stop buttons, and each button corresponds to a specific belt conveyor. The PLC controller combines multiple video input signals into a single optical signal and outputs it to the monitoring video display screen. The input video signal can be recorded, retrieved, and played back using a mouse. The PLC controller receives real-time monitoring signals from each control substation, monitors the faults of the controlled equipment, and displays the faults in text form on the control screen when they occur. It monitors the protection signals transmitted by various sensors in real time, displays the results in text form on the control screen when a protection action occurs, and provides audible alarms via a voice module, power amplifier module, and speaker. A control panel is installed on the host unit, equipped with manual, automatic, start, stop, and protection interlock buttons, which correspond to the buttons displayed on the control screen. The input component receives parameters, control commands, or function calls from the operator. Function calls refer to the remote setting or cancellation of protection functions generated by the connected protection devices by the operator based on the site conditions using the host unit.

2. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The industrial control host connects to a printer, paging microphone, and hard disk storage to establish a remote monitoring center for mining equipment. It monitors equipment operation, enables remote ground monitoring, and synchronous automatic control underground. The industrial control host collects, queries, statistically analyzes, and prints operating data, curves, event information, and operation records of field equipment. It also provides audible and visual alarms for faults and one-button start / stop operations.

3. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The control substation includes a CPU processor, an operation control module, a communication interface, and a voice alarm module. The CPU processor is connected to the operation control module, which in turn connects to explosion-proof solenoid valves, belt motors, fans, and water pumps. It controls the motors and explosion-proof solenoid valves according to instructions. The CPU processor is connected to an intrinsically safe color touchscreen for receiving input and displaying output. The CPU processor is also connected to the voice alarm module, which in turn connects to a communication and reporting unit module. This communication and reporting unit module is connected to a speaker via a power amplifier module, enabling communication, reporting, voice warning, and alarm functions along the route. The communication interface connects to sensors.

4. The intelligent downhole safety monitoring system according to claim 3, characterized in that: The control substation is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100 Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals.

5. The intelligent downhole safety monitoring system according to claim 3, characterized in that: The control substation also includes a color touch LCD screen, and the control modes include starting the engine against the coal flow, starting the engine with the coal flow, and stopping the engine with the coal flow; it also includes a backup power supply to ensure normal communication of the equipment in the event of a power outage, and a high-definition camera is built into the housing of the control substation to realize remote video monitoring.

6. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The PLC controller has the following operating modes: single control mode, centralized control mode, remote control mode, and maintenance mode. When the centralized control is switched to different modes, the corresponding text will be displayed on the control screen.

7. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The host computer is equipped with 3 Ethernet electrical signals, 2 RS485 signals, 2 100 Mbps Ethernet optical signals, and 3 Gigabit Ethernet optical signals.

8. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The host computer is also equipped with a backup power supply to ensure normal communication in the event of a power outage.

9. The intelligent downhole safety monitoring system according to claim 1, characterized in that: The emergency stop interlocking loudspeaker is installed along the belt conveyor. The casing of the emergency stop interlocking loudspeaker is equipped with call, call, emergency stop buttons and pull cord. Inside the casing are a camera, speaker and microphone. Pressing the emergency stop button or pulling the cord to issue an emergency stop interlocking command controls the substation to stop. The call button is used for point communication, call and voice warning. The speaker is used to broadcast start warnings and fault alarms along the line, which helps inspection personnel to stop the belt conveyor in time when they find problems and prevent the situation from escalating. It has a built-in high-definition camera, enabling remote video monitoring of the area, as well as video calls and video recording of operators.

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