CN220820836U - Remote on-off control system of underground coal mine mobile operation equipment - Google Patents
Remote on-off control system of underground coal mine mobile operation equipment Download PDFInfo
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Abstract
The utility model discloses a remote on-off control system of underground mobile operation equipment in a coal mine, which enables an on-off control terminal of the underground mobile operation equipment to be in network connection with an overground communication base station in a wireless and relay mode through underground communication relay facilities in the coal mine, realizes the reliable and low-time-delay on-off function of a vehicle-mounted communication module of the mobile operation equipment and a remote operation platform, overcomes the defects of insufficient signal coverage and insufficient depth (such as a signal blind area, a dead zone and the like brought by a through-the-earth communication mode) of the existing underground communication system through cooperation of a underground baseband unit and a radio frequency remote end in the coal mine, and enlarges the workable area of the remote on-off control system. Compared with the prior art, the utility model has the advantages of wide coverage, high reliability, low cost, strong compatibility, capability of coping with the extreme environment under the mine and the like in the aspect of underground coal mine communication.
Description
Technical Field
The utility model belongs to the technical field of underground coal mine communication and the technical field of remote control of mobile operation equipment, and relates to a remote on-off control system of the mobile operation equipment in an underground coal mine.
Background
In an unmanned coal mine scenario, the remote start-up and shut-down devices need to be carried by a wireless communication system. The system has the main function of realizing remote switch control of the rubber-tyred vehicle which is responsible for operation under the coal mine by utilizing a wireless communication technology so as to replace manual operation. Meanwhile, the system collects information such as running states and environmental parameters of the vehicle in real time by utilizing vehicle-end and submerged sensors, and achieves intelligent control and management of the vehicle through local and remote decision making. In addition, when dealing with sudden extreme scenes, the underground communication facilities of the coal mine must consider safety requirements such as explosion prevention so as to ensure that the underground communication facilities can safely and reliably operate in the unexpected events such as explosion. Therefore, the remote on-off system of the underground coal mine rubber-tyred vehicle is a foundation for guaranteeing the production safety of the coal mine and improving the production efficiency.
The switch control mode of the existing mine construction equipment mainly comprises a wired switch mode, a wireless switch mode, an automatic switch mode and the like, and can meet the basic requirements of mine operation. However, the wired switch has low fault tolerance, high paving and maintenance cost, high requirement on environmental stability and difficulty in handling emergency. The automatic switching mode is to collect environment sensing data only at the equipment end through a microprocessor to automatically judge the switch, so that the remote control requirement cannot be met. At present, the wireless mode of the mine is mainly to remotely control by using systems such as through-the-earth communication, induction communication, leakage communication, PHS, CDMA and WiFi wireless communication and the like. Although the communication systems meet the communication requirements of mine production scheduling to different degrees, the system has the advantages of small channel capacity, low transmission rate, small service radius, large transmission attenuation and transmission power, poor anti-interference and anti-fault capabilities, complex equipment installation and high maintenance cost. And the existing mine mobile communication system adopts the traditional centralized antenna and cell system structure, and frequent cell splitting and handover cause the problems of aggravation of the overhead of handover, increase of the transmitting power, cell edge and the like.
In addition, in practical application, more special physical environment under the coal mine needs to be considered: the working environment is complex, a large amount of dust, moisture, high temperature, high humidity and other factors which are unfavorable for communication exist, the transmission and the reception of communication signals are interfered, the communication quality is affected, and the reliability is reduced; underground communication of a coal mine often needs to pass through an internal rock stratum and a coal seam, and a large number of objects such as roads, equipment and the like are usually arranged in the coal mine, so that the underground communication has no LOS scene and is full of multipath interference and shadow fading; the underground areas are distributed more dispersedly, and the underground rubber-tyred vehicle needs to work in different areas, so that a communication network covering the whole coal mine needs to be established.
Along with the continuous improvement of the mechanization, automation and informatization degree of coal exploitation in China, the communication application in special fields falls to the ground, the application potential is shown in various complex scenes, and advanced and efficient mine communication technical equipment plays an important role in coal mine safety production and emergency rescue communication. Aiming at the special physical environment and communication requirements of underground coal mines, the prior art mainly starts from a plurality of aspects such as signal transmission technology, network topology, signal enhancement and the like, and realizes stable and high-quality underground wireless communication by comprehensively applying different technologies. Taking chinese patent application CN202210947981 as an example, the patent discloses a low-frequency through-the-earth communication device and system based on a rotating magnetic antenna, which uses the propagation characteristic and the through-the-earth penetration capability of the low-frequency signal in an underground medium to realize the transmission and the reception of the through-the-earth signal through the rotating magnetic antenna. Specifically, a transmitter in the system generates a low-frequency magnetic field signal through a rotating magnetic antenna, and the signal penetrates the earth surface to enter the ground, and is then received by the rotating magnetic antenna in a receiver and converted into an electric signal, so that the earth-penetrating communication is realized. Such a communication system has a good coverage in an underground environment, since low frequency signals can penetrate deep in the ground. However, there are still several potential drawbacks to applying this technique downhole in coal mines: firstly, limited by geological conditions, in practical application of the through-the-earth communication technology, the communication effect can be influenced due to different geological conditions, and communication is often impossible under coal mines with complex mining layer distribution; secondly, the installation and maintenance are difficult, and professional technicians and equipment are required for installing and maintaining the through-the-earth communication equipment in the underground coal mine, and the maintenance cost of the equipment is increased by considering the factors of safety, environment and the like; finally, they are susceptible to interference, and in coal mines, there are various devices and signals, such as miners' hand-held interphones, which can interfere with the through-the-earth communication, thereby affecting the quality of the communication.
Currently, communication networks are typically deployed in mines to enable data transmission downhole and uphole. With the perfection of mobile communication technology, more and more mines begin to deploy mining mobile communication networks in order to improve the communication effect in the mines. Taking chinese patent application CN202210081167 as an example, the patent discloses a mining twisted pair broadband multiple access multiplexing system, where the mining network is deployed based on twisted pair and management and access device connection, and the existing twisted pair is used to transmit digital communication, video, voice, sensor, positioning and control data, and the nearby twisted pair management and access device is connected in parallel, so as to implement access to communication terminals (such as underground data devices and communication control servers), thereby implementing data transmission and exchange. However, when applied downhole in a coal mine, the above related art schemes still have several problems: firstly, the anti-interference performance is insufficient, a large number of electromagnetic interference sources exist in the underground coal mine environment, such as motors, frequency converters, mine signals and the like, and the interference can influence the signal quality of twisted pair transmission, so that the communication reliability is reduced; and secondly, the transmission distance is limited, the twisted pair is used as a transmission medium, and the transmission distance and the signal attenuation are related to frequency and data rate. In a coal mine downhole environment, the transmission distance of twisted pair wires may be limited due to geological structure, tunnel length, etc., and an amplifier or repeater may be required to enhance the signal; then, the safety problem is that the underground coal mine environment has higher safety risks, such as explosion, fire and the like, so that special safety protection measures are required to be carried out on the communication system to ensure the stability and reliability of the communication system; finally, there are compatibility problems, and there may be multiple communication systems downhole in the coal mine, and there may be incompatibilities between these systems, which need to take into account the coordination and interconnection between the systems.
In addition, the existing traditional remote switching method needs to provide a special server for a specific scene, the network construction cost is high, the networking is inflexible, the communication quality cannot be ensured under the extreme communication environment of a coal mine, and the reliability transmission is also difficult to meet.
Disclosure of utility model
First technical problem
Aiming at the defects and the shortcomings of the prior art, the utility model provides a remote on-off control system of a coal mine underground mobile operation device, which aims to solve the technical problems that the existing underground coal mine communication system is insufficient in signal coverage breadth and depth, is easy to be limited by topography and geology, is relatively complex and low in installation and arrangement, does not consider extreme scenes such as underground explosion prevention and the like, is difficult to ensure remote reliable transmission, is poor in compatibility among different communication systems and the like.
(II) technical scheme
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
The remote on-off control system of the underground coal mine mobile operation equipment at least comprises an underground coal mine communication system and a plurality of underground mobile operation equipment, wherein each underground mobile operation equipment is at least provided with a vehicle-mounted on-off control terminal,
The underground coal mine communication system at least comprises an underground remote operation server end, an underground communication base station, an underground baseband processing unit (Building Baseband Unit, BBU), a plurality of underground central radio frequency remote units (Central Radio Remote Unit, CRRU) and a plurality of underground edge radio frequency remote units (Radio Remote Unit, RRU), wherein,
The ground remote operation server end is in communication connection with the ground communication base station through a ground network,
The ground communication base station is in communication connection with the on-mine baseband processing unit through a ground network,
The on-mine baseband processing unit is in communication connection with each of the under-mine central radio frequency remote units in a wired manner,
Each of the submerged central radio frequency remote units is in communication connection with each of the submerged edge radio frequency remote units in a wired manner,
And a vehicle-mounted switch control terminal on each underground mobile operation device is in communication connection with each mine lower edge radio frequency remote unit through a communication link.
Preferably, the on-mine baseband processing unit is arranged in an on-mine machine room and is in communication connection with the on-ground communication base station in an uplink manner through an on-ground network.
Preferably, the on-mine baseband processing unit is communicatively coupled to each of the understory central radio frequency remote units via an understory protection optical cable (SPECIALLY PROTECTED OPTIC CABLE, SPOC).
Preferably, the submerged central radio frequency remote unit is disposed at a central position of the submerged area, and is connected to the submerged baseband processing unit and each submerged edge radio frequency remote unit in a nearby manner.
Preferably, each submerged-arc edge radio frequency remote unit is in communication connection with the submerged-arc central radio frequency remote unit through a submerged-arc protection optical cable, and a communication interface between the submerged-arc edge radio frequency remote unit and the submerged-arc central radio frequency remote unit is based on an open CPRI interface (Common Public Radio Interface, common public wireless interface), so that equipment of a mainstream manufacturer is compatible stably.
Preferably, each vehicle-mounted switch control terminal on the underground mobile operation equipment is provided with an antenna, and the vehicle-mounted switch control terminal is in communication connection with each mine lower edge radio frequency remote unit through the antenna, so that the underground coal mine communication system and the last section of communication of the underground mobile operation equipment are realized.
Preferably, the vehicle-mounted switch control terminal is provided with a 4G communication module, and is in communication connection with each mine lower edge radio frequency remote unit through an antenna in the 4G communication module.
Preferably, the vehicle-mounted switch control terminal is provided with a plurality of groups of relays with input interfaces and output interfaces, receives switch control signals from the ground remote server end through the input interfaces, outputs switch quantity signals through the output interfaces, and controls the on-off of the underground mobile operation equipment.
Further, the relay is provided with 8 groups and has 8 paths of switching value output, so that the ground remote server side can realize the control of any switch of 8 paths of switching values at a time.
Preferably, the vehicle-mounted switch control terminal is provided with a memory and a serial port log output port, the memory is used for storing log information generated in the switch control process, and the serial port log output port is used for outputting the log information to realize real-time printing and remote monitoring. The combination of serial port log output and network communication mode can realize the omnibearing log monitoring of the underground mobile operation equipment, has the characteristics of real-time output, rich information, high reliability and the like, plays an important role in log record and emergency communication, and is an important means for monitoring the working state of the vehicle-mounted switch control terminal.
Preferably, the vehicle-mounted switch control terminal is provided with a voltage output port, the voltage output port is used for collecting power supply working voltage and sending the power supply working voltage to the ground remote server end through a communication network, and the ground remote server end monitors in real time and analyzes regularly according to the voltage value and curve change, so that the real-time monitoring of the power supply working voltage is realized.
Preferably, the vehicle-mounted switch control terminal is provided with an RS232 interface and an RS485 interface, the RS232 interface is used for connecting the vehicle-mounted switch control terminal with external serial port equipment, and the RS485 interface is used for connecting the vehicle-mounted switch control terminal with a plurality of external serial port equipment or a lower computer.
Preferably, the vehicle-mounted switch control terminal is provided with a timer, and periodically transmits heartbeat messages to the ground remote server, and the ground remote server monitors the on-line state and communication quality of the equipment according to the receipt and statistics of the heartbeat messages, displays connection information in real time, and alarms in time when abnormality is found, so as to play a role in monitoring the state of the equipment.
(III) technical effects
Compared with the prior art, the remote on-off control system of the coal mine underground mobile operation equipment has the following beneficial and remarkable technical effects:
(1) According to the remote startup and shutdown control system of the underground coal mine mobile operation equipment, the underground mobile operation equipment on-off control terminal is connected with the ground communication base station in a wireless and relay mode through the underground coal mine communication relay facility, so that the reliable and low-time-delay startup and shutdown functions of the vehicle-mounted communication module of the mobile operation equipment and the remote operation platform are realized, and the safety and the efficiency are improved.
(2) According to the remote switch control system of the underground coal mine mobile operation equipment, disclosed by the utility model, the defects of insufficient signal coverage breadth and depth (such as a signal blind area, a dead area and the like caused by a through-the-earth communication mode) of the existing underground communication system are overcome through the cooperation of the underground coal mine baseband unit and the radio frequency remote end, the working area of the remote switch control system is enlarged, and the coverage and the stability are improved.
(3) The remote on-off control system of the underground coal mine mobile operation equipment has the advantages of low cost, strong compatibility, capability of coping with underground complex environments and the like, and is suitable for being used in various scenes.
Drawings
FIG. 1 is a schematic diagram of a remote on-off control system of a coal mine underground mobile operation device;
FIG. 2 is a schematic diagram of a remote power on/off control system for a mobile operation device in a coal mine;
Reference numerals illustrate:
The underground mobile operation equipment 10, an underground remote operation server end 20, an underground communication base station 21, an underground baseband processing unit 22, an underground central radio frequency remote unit 23 and an underground edge radio frequency remote unit 24.
Detailed Description
For a better understanding of the present utility model, the following examples are set forth to illustrate the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. The following describes the structure and technical scheme of the present utility model in detail with reference to the accompanying drawings, and an embodiment of the present utility model is given.
As shown in FIG. 1, the remote on-off control system of the underground coal mine mobile operation equipment at least comprises an underground coal mine communication system and a plurality of underground mobile operation equipment 10, wherein each underground mobile operation equipment 10 is provided with at least one vehicle-mounted on-off control terminal. The underground coal mine communication system at least comprises an underground remote operation server end 20, an underground communication base station 21, an underground baseband processing unit 22 (Building Baseband Unit, BBU), a plurality of underground central radio frequency remote units 23 (Central Radio Remote Unit, CRRU) and a plurality of underground edge radio frequency remote units 24 (Radio Remote Unit, RRU), wherein the underground remote operation server end 20 is in communication connection with the underground communication base station 21 through an above-ground network, the above-ground communication base station 21 is in communication connection with the underground baseband processing unit 22 through an above-ground network, the underground baseband processing unit 22 is in communication connection with the underground central radio frequency remote units 23 in a wired manner, each underground central radio frequency remote unit 23 is in communication connection with the underground edge radio frequency remote units 24 in a wired manner, and a vehicle-mounted switch control terminal on each underground mobile operation device 10 is in communication connection with the underground edge radio frequency remote units 24 through communication links.
As a preferred example of the present utility model, the on-mine baseband processing unit 22 is placed in an on-mine room and is communicatively connected to the above-ground communication base station 21 by an uplink manner. The submerged central rf remote unit 23 is located in the central area of the submerged cell and connects the submerged baseband processing unit 22 and each submerged edge rf remote unit 24 in a near manner. Each submerged-edge radio frequency remote unit 24 is in communication connection with the submerged-center radio frequency remote unit 23 through submerged-protection optical cables, and a communication interface between the submerged-center radio frequency remote units is based on an open CPRI interface (Common Public Radio Interface, common public wireless interface), so that the submerged-center radio frequency remote units are stably compatible with equipment of mainstream manufacturers.
Further, as a preferred example of the present utility model, the on-board switch control terminal on each of the downhole mobile operation devices 10 is provided with an antenna and is communicatively connected to each of the mine lower edge rf remote units 24 via the antenna to enable the last-stage communication between the downhole communication system of the mine and the downhole mobile operation devices. The vehicle-mounted switch control terminal is also preferably provided with a 4G communication module, and is in communication connection with the radio frequency remote units at the lower edge of each mine through an antenna in the 4G communication module. The vehicle-mounted switch control terminal is also preferably provided with a plurality of groups of relays with input interfaces and output interfaces, receives switch control signals from an overground remote server end through the input interfaces, outputs switching value signals through the output interfaces, and controls the on-off of underground mobile operation equipment. The vehicle-mounted switch control terminal is also preferably provided with a memory and a serial port log output port, wherein the memory is used for storing log information generated in the switch control process, and the serial port log output port is used for outputting the log information to realize real-time printing and remote monitoring. The combination of serial port log output and network communication mode can realize the omnibearing log monitoring of the underground mobile operation equipment, has the characteristics of real-time output, rich information, high reliability and the like, plays an important role in log record and emergency communication, and is an important means for monitoring the working state of the vehicle-mounted switch control terminal. The vehicle-mounted switch control terminal is also preferably provided with a voltage output port, wherein the voltage output port is used for collecting the working voltage of the power supply and sending the working voltage to an overground remote server terminal through a communication network, and the overground remote server terminal monitors and regularly analyzes the working voltage of the power supply according to the voltage value and the curve change, so that the real-time monitoring of the working voltage of the power supply is realized. The vehicle-mounted switch control terminal is also preferably provided with an RS232 interface and an RS485 interface, wherein the RS232 interface is used for connecting the vehicle-mounted switch control terminal with external serial port equipment, and the RS485 interface is used for connecting the vehicle-mounted switch control terminal with a plurality of external serial port equipment or a lower computer. The vehicle-mounted switch control terminal is also preferably provided with a timer, and periodically transmits heartbeat messages to an on-ground remote server, and the on-ground remote server monitors the on-line state and communication quality of equipment according to the receipt and statistics of the heartbeat messages, displays connection information in real time, and alarms in time when abnormality is found, thereby playing a role in monitoring the state of the equipment.
As shown in fig. 2, in the remote on-off control system of the underground coal mine mobile operation equipment, an overground remote server end is in communication connection with an overground communication base station through an overground network, so that the on-off function of the underground mobile operation equipment can be remotely controlled; the ground communication base station is in communication connection with the on-mine baseband processing unit through a ground network, and can forward an instruction of a server to underground communication equipment; the on-mine baseband processing unit is in communication connection with each underground central radio frequency remote unit through an underground protection optical cable, and can convert signals of the communication base station into signals suitable for underground transmission; each submerged central radio frequency remote unit is in communication connection with each submerged edge radio frequency remote unit in a wired mode, and can distribute signals of the baseband processing unit to different areas; the vehicle-mounted switch control terminal on each underground mobile operation device is in communication connection with the radio frequency remote units at the lower edge of each mine through an antenna, and can receive and send on-off instructions and state information.
In addition, the remote on-off control system of the underground coal mine mobile operation equipment ensures that the underground coal mine mobile operation equipment carrying the vehicle-mounted remote on-off terminal timely and reliably responds to remote instructions by using the underground central radio frequency remote unit and the underground edge radio frequency remote unit to perform arrangement of an underground cloud wireless access network, and provides a solution for considering both power consumption and communication quality for an underground communication system.
The object of the present utility model is fully effectively achieved by the above-described embodiments. Those skilled in the art will appreciate that the present utility model includes, but is not limited to, those illustrated in the drawings and described in the foregoing detailed description. While the utility model has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the utility model is not limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.
Claims (10)
1. The remote on-off control system of the underground coal mine mobile operation equipment at least comprises an underground coal mine communication system and a plurality of underground mobile operation equipment, wherein each underground mobile operation equipment is at least provided with a vehicle-mounted on-off control terminal,
The underground coal mine communication system at least comprises an on-ground remote operation server end, an on-ground communication base station, an on-mine baseband processing unit, a plurality of underground central radio frequency remote units and a plurality of underground edge radio frequency remote units, wherein,
The ground remote operation server end is in communication connection with the ground communication base station through a ground network,
The ground communication base station is in communication connection with the on-mine baseband processing unit through a ground network,
The on-mine baseband processing unit is in communication connection with each of the under-mine central radio frequency remote units in a wired manner,
Each of the submerged central radio frequency remote units is in communication connection with each of the submerged edge radio frequency remote units in a wired manner,
And a vehicle-mounted switch control terminal on each underground mobile operation device is in communication connection with each mine lower edge radio frequency remote unit through a communication link.
2. The remote power on/off control system of the underground coal mine mobile operation equipment according to claim 1, wherein the on-mine baseband processing unit is placed in an on-mine machine room and is in communication connection with the on-ground communication base station through an on-ground network.
3. The remote power on/off control system of a mobile operation device in a coal mine as claimed in claim 1, wherein the on-mine baseband processing unit is communicatively connected to each of the under-mine central radio frequency remote units through an under-mine protection optical cable.
4. The remote power on/off control system of a mobile operation device in a coal mine as claimed in claim 1, wherein the submerged central radio frequency remote unit is disposed at a central position of a submerged area and is connected to the submerged baseband processing unit and each submerged edge radio frequency remote unit in a nearby manner.
5. The remote power on/off control system of a coal mine underground mobile operation device according to claim 1, wherein each of the underground mine edge radio frequency remote units is in communication connection with the underground mine center radio frequency remote unit through an underground mine protection optical cable, and a communication interface between the underground mine edge radio frequency remote unit and the underground mine center radio frequency remote unit is based on an open CPRI interface, so that the underground mine underground mobile operation device is stably compatible with equipment of a main stream manufacturer.
6. The remote on-off control system of coal mine underground mobile operation equipment according to claim 1, wherein the vehicle-mounted switch control terminal on each underground mobile operation equipment is provided with an antenna, and is in communication connection with each underground edge radio frequency remote unit through the antenna, so that the coal mine underground communication system is in communication with the last section of the underground mobile operation equipment.
7. The remote on-off control system of the underground coal mine mobile operation equipment according to claim 1, wherein the vehicle-mounted switch control terminal is provided with a 4G communication module, and is in communication connection with each underground coal mine edge radio frequency remote unit through an antenna in the 4G communication module.
8. The remote on-off control system of the underground coal mine mobile operation equipment according to claim 1, wherein a plurality of groups of relays with input and output interfaces are arranged in the vehicle-mounted switch control terminal, switch control signals from the ground remote operation server are received through the input interfaces, switch value signals are output through the output interfaces, and on-off of the underground mobile operation equipment is controlled.
9. The remote on-off control system of the underground coal mine mobile operation equipment according to claim 1, wherein the vehicle-mounted switch control terminal is provided with a memory and a serial port log output port, the memory is used for storing log information generated in a switch control process, and the serial port log output port is used for outputting the log information to realize real-time printing and remote monitoring.
10. The remote on-off control system of the underground coal mine mobile operation equipment according to claim 1, wherein the vehicle-mounted switch control terminal is provided with a voltage output port, the voltage output port is used for collecting power supply working voltage and sending the power supply working voltage to the ground remote operation server end through a communication network, and the ground remote operation server end performs real-time monitoring and periodical analysis according to voltage values and curve changes to realize real-time monitoring of the power supply working voltage.
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| CN202321830583.1U CN220820836U (en) | 2023-07-12 | 2023-07-12 | Remote on-off control system of underground coal mine mobile operation equipment |
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