Communication system and method for coal mine tunnel, electronic equipment and storage medium

Abstract

The invention discloses a communication system and method for a coal mine tunnel, electronic equipment and a storage medium. The system comprises an intrinsic safety substation and a gas extraction working face air inlet formed in a coal mine tunnel, the intrinsic safety substation communicates with a central station in a wired mode, and the intrinsic safety substation is used for representing communication substations meeting the preset safety level; the wireless base stations are arranged at different positions in a gas extraction working face roadway of a coal mine roadway, the wireless base stations communicate with the intrinsic safety substations in a wireless mode, and the wireless base stations communicate in the coal mine roadway in a chain networking mode; and the plurality of sensors are arranged corresponding to the plurality of wireless base stations, the plurality of sensors communicate with the plurality of wireless base stations in a wireless mode, and the plurality of sensors are used for collecting condition information in the coal mine tunnel to obtain sensor data. According to the invention, the technical problem of low communication efficiency of the coal mine tunnel in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of coal mine tunnel communications, and in particular to a coal mine tunnel communications system, method, electronic equipment and storage medium. Background Art

[0002] Communications in coal mine tunnels can include data transmission, monitoring, and safety alarms. Through the tunnel communication system, data can be transmitted to achieve remote monitoring and management of underground equipment; and the alarm system can also detect dangerous situations in a timely manner to ensure the safety of miners.

[0003] At present, the communication methods in related technologies usually adopt star-shaped self-organizing networks and cellular self-organizing networks, which are more suitable for wider areas. However, the application scenarios of coal mine tunnel communication often require communication requirements such as narrow distances and low power consumption. Traditional communication methods have difficulties in equipment deployment, low communication network coverage and high system power consumption when conducting coal mine tunnel communication, resulting in low communication efficiency in coal mine tunnels in related technologies.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a communication system, method, electronic device and storage medium for coal mine tunnels, so as to at least solve the technical problem of low communication efficiency in coal mine tunnels in the related art.

[0006] According to one aspect of an embodiment of the present application, a communication system for a coal mine tunnel is provided, including: an intrinsically safe substation, arranged at an air inlet of a gas extraction working face in a coal mine tunnel, the intrinsically safe substation communicates with a central station in a wired manner, wherein the intrinsically safe substation is used to indicate a communication substation that meets a preset safety level; multiple wireless base stations, arranged at different positions in the gas extraction working face tunnel of the coal mine tunnel, the multiple wireless base stations communicate with the intrinsically safe substation in a wireless manner, and the multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel; multiple sensors, arranged corresponding to the multiple wireless base stations, the multiple sensors communicate with the multiple wireless base stations in a wireless manner, wherein the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data.

[0007] Optionally, the intrinsically safe substation includes: a first transmission module, the first transmission module at least including a wired transmission module, a first wireless transmission module and a first processor, wherein the wired transmission module is used to communicate with the central station in a wired manner, the first wireless transmission module is used to communicate with multiple wireless base stations in a wireless manner, and the first processor is used to process data provided by the wired transmission module and the first wireless transmission module; a DC power supply is used to power the first transmission module.

[0008] Optionally, multiple wireless base stations include: a target wireless base station, which communicates with the inherently safe substation in a wireless manner, wherein the target wireless base station is used to represent a wireless base station among the multiple wireless base stations whose distance from the inherently safe substation is less than a preset distance; other wireless base stations, which communicate with the target wireless base station in a chain-like wireless manner, wherein the target wireless base station is used to represent other wireless base stations among the multiple wireless base stations except the target wireless base station.

[0009] Optionally, any one of the multiple wireless base stations includes: a second transmission module, the second transmission module includes at least a second wireless transmission module, a Bluetooth wireless transmission module, a broadband wireless transmission module and a second processor, wherein the second wireless transmission module is used to communicate with the target device wirelessly, the Bluetooth wireless transmission module is used to communicate with multiple sensors using a Bluetooth wireless method, the broadband wireless transmission module is used to identify the distance between the target device and the target device using a broadband wireless method, the second processor is used to process data provided by the second wireless transmission module, the Bluetooth wireless transmission module and the broadband wireless transmission module, the target device includes at least one of the following: a target wireless base station, other wireless base stations and an intrinsically safe substation; an intrinsically safe battery pack, used to power the second transmission module, wherein the intrinsically safe battery pack is used to indicate a battery pack that meets a preset safety level.

[0010] Optionally, multiple wireless base stations are set with a preset working cycle, which includes a first time period and a second time period, the duration corresponding to the first time period is greater than the duration corresponding to the second time period, and multiple wireless base stations are in a sleep state during the first time period, and multiple wireless base stations communicate during the second time period.

[0011] Optionally, the multiple wireless base stations include a real-time clock module, and the multiple wireless base stations use the real-time clock module to perform time synchronization in a dormant state.

[0012] According to another aspect of the embodiment of the present application, a communication method for coal mine tunnels is also provided, including: communicating with a central station based on an intrinsically safe substation, wherein the intrinsically safe substation is arranged at the air inlet of the gas extraction working face in the coal mine tunnel, and the intrinsically safe substation is used to indicate a communication substation that meets a preset safety level; communicating with the intrinsically safe substation in a wireless manner based on multiple wireless base stations, wherein the multiple wireless base stations are arranged at different positions in the gas extraction working face tunnel of the coal mine tunnel, and the multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel; communicating with the multiple wireless base stations in a wireless manner based on multiple sensors, wherein the multiple sensors are arranged corresponding to the multiple wireless base stations, and the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data.

[0013] According to another aspect of the embodiments of the present application, an electronic device is further provided, including: a memory storing an executable program; and a processor for running the program, wherein the method of each embodiment of the present application is executed when the program is running.

[0014] According to another aspect of an embodiment of the present application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in each embodiment of the present application.

[0015] According to another aspect of the embodiments of the present application, a computer program product is also provided, including a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present application is implemented.

[0016] According to another aspect of an embodiment of the present application, a computer program product is also provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present application is implemented.

[0017] According to another aspect of the embodiments of the present application, a computer program is also provided, and when the computer program is executed by a processor, the methods in the various embodiments of the present application are implemented.

[0018] In an embodiment of the present invention, a communication system for a coal mine tunnel is provided, including: an intrinsically safe substation, which is arranged at the air inlet of the gas extraction working face of the coal mine tunnel, and the intrinsically safe substation communicates with the central station in a wired manner, wherein the intrinsically safe substation is used to indicate a communication substation that meets the preset safety level; multiple wireless base stations, which are arranged at different positions in the gas extraction working face tunnel of the coal mine tunnel, and the multiple wireless base stations communicate with the intrinsically safe substation in a wireless manner, and the multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel; multiple sensors, which are arranged corresponding to the multiple wireless base stations, and the multiple sensors communicate with the multiple wireless base stations in a wireless manner, wherein the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data. It is easy to notice that the present application realizes the establishment of a multi-level communication network by setting an intrinsically safe substation, multiple wireless base stations and multiple sensors in the coal mine tunnel. Wired communication is adopted between the intrinsically safe substation and the central station to ensure the stability and reliability of data transmission; and wireless communication is adopted between the multiple wireless base stations and the sensors, and chain networking is realized in the tunnel, which can realize all-round data transmission and monitoring, and improve communication efficiency. By setting up multiple wireless base stations and sensors, equipment can be quickly deployed at different locations in the tunnel according to actual needs, with greater flexibility. Multiple wireless base stations using chain networking can achieve long-distance data transmission, adapt to the chain layout of coal mine tunnels, and improve data transmission efficiency and speed. Setting up multiple wireless base stations and using chain networking to communicate can better adapt to the special environment of coal mine tunnels and long-distance data transmission requirements, improve the stability and reliability of the communication system, and thus solve the technical problem of low communication efficiency in coal mine tunnels in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of a communication system for a coal mine tunnel according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an optional coal mine tunnel communication system according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of an optional intrinsically safe substation structure according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of an optional wireless base station structure according to an embodiment of the present invention;

[0024] Figure 5is a schematic diagram of data transmission based on an optional communication system in a coal mine tunnel according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of identifying spacing based on an optional communication system in a coal mine tunnel according to an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of optional communication system equipment numbering for a coal mine tunnel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] According to an embodiment of the present application, a communication system for a coal mine tunnel is provided. Figure 1 is a schematic diagram of a communication system for a coal mine tunnel according to the present application, such as Figure 1 As shown, the communication system of the coal mine tunnel includes: an intrinsically safe substation 102, multiple wireless base stations 104 and multiple sensors 106.

[0030] The intrinsically safe substation is installed at the air inlet of the gas extraction working face in the coal mine tunnel. The intrinsically safe substation communicates with the central station by wire.

[0031] Among them, the intrinsically safe substation is used to indicate a communication substation that meets the preset safety level.

[0032] In an optional embodiment, an intrinsically safe substation can be set in the communication system of the coal mine tunnel to ensure the safety and reliability of the communication system. The intrinsically safe substation can be installed at the air inlet of the gas extraction working face of the coal mine tunnel. The intrinsically safe substation communicates with the central station by wire to ensure that information can be transmitted in time and corresponding measures can be taken when there is a gas leak or other dangerous situation. The intrinsically safe substation can be designed to meet the explosion-proof requirements, using explosion-proof housing and explosion-proof circuit to prevent sparks from causing gas explosions. The intrinsically safe substation can also have self-diagnosis and self-detection functions, and can monitor the communication status and equipment working status in real time to ensure the stability of the communication system. By setting up an intrinsically safe substation in the dangerous area of ​​the coal mine tunnel, the gas concentration and other dangerous situations can be monitored in time to ensure that the communication system operates in a safe environment. The intrinsically safe substation can monitor the communication status and equipment working status in real time, find and solve faults in time, reduce the failure rate of the communication system, and ensure the reliability of communication. Dangerous information can be transmitted to the central station in real time, so that the central station can take measures to deal with emergencies in time and protect the lives of miners.

[0033] Multiple wireless base stations are set up at different positions in the gas extraction working face of the coal mine tunnel. The multiple wireless base stations communicate with the intrinsically safe substation in a wireless manner. The multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel.

[0034] In an optional embodiment, multiple wireless base stations are set in the communication system of the coal mine lane, and the chain networking method is used for communication, which can ensure that different positions in the gas extraction working face lane in the coal mine lane can obtain stable communication signals. Multiple wireless base stations are set in the coal mine lane, which can cover a wider area, ensure that the signal coverage area is larger, and the signal transmission is more stable and reliable. Multiple wireless base stations communicate in a chain networking manner, that is, each wireless base station can be connected to the adjacent base station to form a chain network structure. The setting of multiple wireless base stations can cover a wider area, ensure that each position in the coal mine lane can obtain a stable communication signal, set multiple wireless base stations in the communication system of the coal mine lane, and communicate in a chain networking manner, which can effectively improve the communication coverage, stability and data transmission rate, and ensure the safety and efficient operation of the coal mine working face. In particular, the chain networking method can realize long-distance data transmission, adapt to the chain layout of the coal mine lane, and improve the efficiency and speed of data transmission. Setting up multiple wireless base stations and using chain networking to communicate can better adapt to the special environment of coal mine tunnels and the needs of long-distance data transmission, and improve the stability and reliability of the communication system.

[0035] A plurality of sensors are arranged corresponding to a plurality of wireless base stations, and the plurality of sensors communicate with the plurality of wireless base stations in a wireless manner.

[0036] Among them, multiple sensors are used to collect status information in the coal mine tunnels to obtain sensor data.

[0037] In an optional embodiment, a design scheme in which multiple sensors and multiple wireless base stations are correspondingly arranged in the communication system of the coal mine tunnel can improve the collection efficiency and transmission reliability of the status information in the coal mine tunnel. Specifically, multiple sensors can be arranged in the coal mine tunnel, and these sensors can be temperature sensors, humidity sensors, gas sensors, vibration sensors, etc., which are used to monitor the changes of various parameters in the coal mine tunnel in real time. For each sensor, a corresponding wireless base station can be set for wireless communication with the sensor. The sensor sends the collected data to the corresponding wireless base station wirelessly. By setting multiple sensors and multiple wireless base stations, redundant transmission and multi-path transmission of data can be realized, which improves the reliability and stability of data transmission. Through the above settings, real-time monitoring and data collection of various parameters in the coal mine tunnel can be realized, providing accurate status information for technical personnel, helping to timely discover abnormal conditions in the coal mine tunnel, and improving the safety and production efficiency of the coal mine.

[0038] In an embodiment of the present invention, a communication system for a coal mine tunnel is provided, including: an intrinsically safe substation, which is arranged at the air inlet of the gas extraction working face of the coal mine tunnel, and the intrinsically safe substation communicates with the central station in a wired manner, wherein the intrinsically safe substation is used to indicate a communication substation that meets the preset safety level; multiple wireless base stations, which are arranged at different positions in the gas extraction working face tunnel of the coal mine tunnel, and the multiple wireless base stations communicate with the intrinsically safe substation in a wireless manner, and the multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel; multiple sensors, which are arranged corresponding to the multiple wireless base stations, and the multiple sensors communicate with the multiple wireless base stations in a wireless manner, wherein the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data. It is easy to notice that the present application realizes the establishment of a multi-level communication network by setting an intrinsically safe substation, multiple wireless base stations and multiple sensors in the coal mine tunnel. Wired communication is adopted between the intrinsically safe substation and the central station to ensure the stability and reliability of data transmission; and wireless communication is adopted between the multiple wireless base stations and the sensors, and chain networking is realized in the tunnel, which can realize all-round data transmission and monitoring, and improve communication efficiency. By setting up multiple wireless base stations and sensors, equipment can be quickly deployed at different locations in the tunnel according to actual needs, with greater flexibility. Multiple wireless base stations using chain networking can achieve long-distance data transmission, adapt to the chain layout of coal mine tunnels, and improve data transmission efficiency and speed. Setting up multiple wireless base stations and using chain networking to communicate can better adapt to the special environment of coal mine tunnels and long-distance data transmission requirements, improve the stability and reliability of the communication system, and thus solve the technical problem of low communication efficiency in coal mine tunnels in related technologies.

[0039] Optionally, the intrinsically safe substation includes: a first transmission module, the first transmission module at least including a wired transmission module, a first wireless transmission module and a first processor, wherein the wired transmission module is used to communicate with the central station in a wired manner, the first wireless transmission module is used to communicate with multiple wireless base stations in a wireless manner, and the first processor is used to process data provided by the wired transmission module and the first wireless transmission module; a DC power supply is used to power the first transmission module.

[0040] The above-mentioned first wireless transmission module can use long range low power wireless communication technology (Long Range Low Power Wireless Communication, referred to as LoRa) to communicate with multiple wireless base stations. The wireless communication method of the first wireless transmission module can also be determined according to actual needs and is not limited here.

[0041] In an optional embodiment, the intrinsically safe substation communicates with the central station and the wireless base station through the first transmission module, and the transmission module is powered by a DC power supply. The first transmission module includes a wired transmission module, a first wireless transmission module and a first processor. The wired transmission module communicates with the central station in a wired manner to ensure that data can be stably transmitted in the tunnel; the first wireless transmission module communicates with multiple wireless base stations in a wireless manner to achieve wireless coverage and enhance the flexibility and coverage of communication; the first processor is used to process the data provided by the wired transmission module and the first wireless transmission module to ensure the accuracy and stability of data transmission. Through such a setting, the communication system of the coal mine tunnel can realize wired and wireless transmission and improve the reliability and stability of communication. The stability, reliability and coverage of the coal mine tunnel communication system can be improved, ensuring that the communication system can operate stably in harsh environments, and providing reliable communication guarantee for coal mine production.

[0042] Optionally, multiple wireless base stations include: a target wireless base station, which communicates with the inherently safe substation in a wireless manner, wherein the target wireless base station is used to represent a wireless base station among the multiple wireless base stations whose distance from the inherently safe substation is less than a preset distance; other wireless base stations, which communicate with the target wireless base station in a chain-like wireless manner, wherein the target wireless base station is used to represent other wireless base stations among the multiple wireless base stations except the target wireless base station.

[0043] In an optional embodiment, multiple wireless base stations can be set in the coal mine tunnel communication system to improve the stability and coverage of communication. Among them, the target wireless base station, as a communication node, conducts direct wireless communication with the intrinsically safe substation to indicate the base station that is closer to the intrinsically safe substation. Other wireless base stations communicate with the target wireless base station in a chain-like wireless manner to expand the communication range. The communication between the target wireless base station and the intrinsically safe substation is wireless. Other wireless base stations communicate with the target wireless base station in a chain-like wireless manner, and transmit data to the target wireless base station by relaying to expand the communication range. Through the above settings, the coverage of the communication system can be improved to ensure seamless communication coverage in the entire coal mine tunnel. The cost of the communication system can be reduced. Through the chain-like wireless communication method, the number of base stations to be deployed can be reduced, thereby reducing equipment and maintenance costs.

[0044] Optionally, any one of the multiple wireless base stations includes: a second transmission module, the second transmission module includes at least a second wireless transmission module, a Bluetooth wireless transmission module, a broadband wireless transmission module and a second processor, wherein the second wireless transmission module is used to communicate with the target device wirelessly, the Bluetooth wireless transmission module is used to communicate with multiple sensors using a Bluetooth wireless method, the broadband wireless transmission module is used to identify the distance between the target device and the target device using a broadband wireless method, the second processor is used to process data provided by the second wireless transmission module, the Bluetooth wireless transmission module and the broadband wireless transmission module, the target device includes at least one of the following: a target wireless base station, other wireless base stations and an intrinsically safe substation; an intrinsically safe battery pack, used to power the second transmission module, wherein the intrinsically safe battery pack is used to indicate a battery pack that meets a preset safety level.

[0045] The second wireless transmission module mentioned above can communicate with multiple wireless base stations using long-distance low-power wireless communication technology, and the wireless communication method of the first wireless transmission module can also be determined according to actual needs and is not limited here.

[0046] In an optional embodiment, each wireless base station may include a second transmission module, wherein the second transmission module is composed of a second wireless transmission module, a Bluetooth wireless transmission module, a broadband wireless transmission module and a second processor. The second wireless transmission module is used to wirelessly communicate with the target device to ensure the reliability and stability of data transmission between the devices. The Bluetooth wireless transmission module is used to communicate with multiple sensors to achieve real-time monitoring and collection of environmental data. The broadband wireless transmission module is used to identify the distance between the target devices, thereby realizing the positioning and navigation functions. The second processor is responsible for processing the data provided by the second transmission module to ensure the security and accuracy of data transmission. The target device can be a target wireless base station, other wireless base stations or intrinsically safe substations, and a flexible communication network can be built through different combinations of devices. In addition, an intrinsically safe battery pack is set to power the second transmission module to ensure the safe use of the device in dangerous environments such as coal mine tunnels. The intrinsically safe battery pack meets the preset safety level to ensure that the device can still work normally under harsh conditions. Through the above design, the coal mine tunnel communication system can achieve stable and reliable communication connection, monitor environmental data in real time, realize equipment positioning and navigation functions, and ensure the safe use of equipment in dangerous environments. Such a setting can improve the efficiency and safety of coal mine production and provide better working conditions and guarantees for miners.

[0047] Optionally, multiple wireless base stations are set with a preset working cycle, which includes a first time period and a second time period, the duration corresponding to the first time period is greater than the duration corresponding to the second time period, and multiple wireless base stations are in a sleep state during the first time period, and multiple wireless base stations communicate during the second time period.

[0048] In an optional embodiment, multiple wireless base stations set in the communication system of the coal mine tunnel can work according to a preset working cycle, which can improve the energy efficiency and reliability of the communication system. The preset working cycle includes a first period and a second period, and the duration of the first period is longer than the second period. Such a setting can allow multiple wireless base stations to be in a dormant state during the first period, saving energy consumption and reducing power consumption. In the second period, multiple wireless base stations communicate to ensure the reliability and stability of communication. Since multiple wireless base stations are in a dormant state during the first period, power consumption can be effectively reduced and the service life of the base station can be extended. In environments such as coal mine tunnels, energy supply may be limited, so energy-saving optimization is more important for long-term stable operation. By reasonably setting the working cycle and the working state of the base station, intelligent scheduling and collaborative work between base stations can be achieved. In this way, interference and conflict between base stations can be effectively avoided, the overall performance of the communication system can be improved, and energy-saving optimization, communication reliability and intelligent scheduling can be achieved, thereby improving the performance and stability of the overall communication system.

[0049] Optionally, the multiple wireless base stations include a real-time clock module, and the multiple wireless base stations use the real-time clock module to perform time synchronization in a dormant state.

[0050] In an optional embodiment, in the communication system of the coal mine tunnel, due to the complexity of the underground environment of the mine and the difficulty of signal transmission, the communication equipment needs to be able to ensure efficient and stable data transmission. In order to ensure time synchronization between multiple wireless base stations, a real-time clock module can be set to achieve it. The real-time clock module can be a device that can provide accurate time information, and can obtain a global unified time standard through global navigation positioning and other methods. In the coal mine tunnel communication system, multiple wireless base stations will perform time synchronization through the real-time clock module in a dormant state to ensure that they can accurately perform data transmission and communication when awakened. In the above setting, the base station will periodically wake up the real-time clock module in a dormant state for time synchronization. Through the time synchronization algorithm, it can be ensured that the time error between each base station is within an acceptable range. By synchronizing the time through the real-time clock module, the timing of data transmission between each base station can be effectively controlled to avoid data conflicts and losses. Time synchronization can ensure the accuracy of data transmission, reduce data loss and errors, improve communication quality, improve the stability, efficiency and accuracy of the communication system, and ensure that the communication equipment in the underground environment of the coal mine can work efficiently.

[0051] The technical solution proposed in this application is described below in combination with an optional embodiment. This application proposes a mine wireless ad hoc network method, which belongs to the field of coal mine communication. This solution improves the LoRa star wireless ad hoc network method and the cellular wireless ad hoc network to realize the chain wireless ad hoc network method, thereby achieving the purpose of long-distance wireless hand-in-hand relay transmission in coal mine tunnels.

[0052] The communication system of the coal mine tunnel in this application can be composed of four parts: a central station, an intrinsically safe substation, a wireless base station, and a sensor. The intrinsically safe substation is powered by a flameproof and intrinsically safe DC power supply, communicates with the central station by wire, is installed at the air inlet of the gas extraction working face, and forms a wireless self-organizing network through the LoRa wireless module and the wireless base station. The wireless base station is installed in the tunnel of the gas extraction working face as needed, and wireless networking is carried out in a hand-in-hand manner, and each device has a unique code.

[0053] The intrinsically safe substation acts as the main node in the wireless ad hoc network, and has RS485 communication protocol (RS485 Communication Protocol, referred to as RS485) wired transmission and LoRa wireless transmission module. The RS485 module is used for remote communication of the central station, and the LoRa module is used for ad hoc network and wireless data transmission. The device is powered by a DC power supply, and both the RS485 module and the LoRa module are in continuous working mode and do not enter sleep or low power consumption state.

[0054] The wireless base station plays a role in wireless relay transmission in the wireless ad hoc network. It has a LoRa wireless transmission module, a Bluetooth wireless data acquisition module, and an ultra-wideband (UWB) precise positioning module. The Bluetooth module is used for nearby sensor data collection, the UWB module is used for sensor device positioning and position determination between devices, and the LoRa module is used for ad hoc networking and wireless data transmission. The device is powered by an intrinsically safe battery pack. The Bluetooth module and the UWB module are in intermittent working mode. When not working, the power is off. The LoRa module is in ultra-low power sleep mode. It actively wakes up and listens for data transmission within the agreed time period. When idle, it actively enters ultra-low power sleep mode. The entire wireless ad hoc network adopts a chain networking method, and data is transmitted hand in hand. The entire data transmission is divided into downlink and uplink. The downlink data is actively initiated by the host computer, and the downlink data is transmitted to the intrinsically safe substation via RS485. The intrinsically safe substation determines that it is downlink data, and sends it to the next level of wireless base station through its own LoRa module.

[0055] Considering that in an ideal situation, the wireless signals of 1#, 2#, 3#...n# base stations just cover each other in pairs, the installation status of adjacent wireless base stations can be simply judged by the identification of whether the data is uplink or downlink, and the data is also relayed in a hand-in-hand manner. Due to the limitations of installation conditions, the wireless base station signal has the problem of covering two or three adjacent wireless base stations at the same time. In view of the problem of repeated signal coverage, the UWB linear ranging method is started to test the relative distance between the sending module and the signal repeated coverage module, thereby judging the adjacent relationship and realizing reliable data relay transmission. When installing and configuring the intrinsically safe substation and wireless base station underground in the coal mine, they are arranged linearly according to the coal mine lanes, and the intrinsically safe substation and wireless base station are numbered in sequence, 0, 1, 2, 3...n. For downlink data, only the substation or base station data with a number smaller than its own is received, and for uplink data, only the base station data with a number larger than its own is received. The address of the downlink or uplink data is analyzed, and if the same, it is sent after processing. If the address is not the same, it is directly forwarded. Thus, the purpose of hand-in-hand relay transmission of data is achieved.

[0056] Devices in the ad hoc network need a unified clock. Since the working cycle interval of the device is relatively long, for example, data is transmitted only once every 10 minutes, it takes about 10 to 20ms for the entire device node data transmission to complete. At the same time, the device needs to be as low-power as possible, so the device needs to be in a stop working module for a long time and cannot be periodically awakened for time synchronization. At the same time, there is a real-time clock (RTC) timer deviation between devices, so there may be deviations in the working time points of each device, and each device cannot be awakened and synchronized at the same time. This method stipulates a longest cycle, wakes up by RTC for 99% of the longest cycle, and then works with short cycle intervals for 99%-100% of the time, listens to the data sent by the master device, synchronizes at the same time, and then works at full speed, processes data, accepts the master device clock at the same time, sets its own clock at the same time, and starts the next round of work cycle. Since the device is powered by an intrinsically safe battery pack, it is necessary to reduce the power consumption of the ad hoc network and sensors as much as possible. The method of long-term power outage and short-term interval sleep is adopted. In a fixed inspection work cycle, the entire device is powered off for 99% of the time, leaving only the RTC working. The RTC wake-up time is set to 99%, and the device is turned on for 99% of the time, and the Lora gap work is turned on. The Lora data is detected periodically in a short period of time. If there is data, the corresponding module is woken up to process the data, and the next power-off work cycle is entered after the processing is completed. Due to the problem of multiple signal coverage between devices, a wireless base station signal can be determined through data uplink and downlink methods and UWB ranging. It is possible that multiple chain devices are covered at the same time. At this time, the transmission power of the base station can be reduced to achieve wireless coverage of the nearest base station. The slightly farther base station cannot receive the wireless signal, thereby reducing the transmission current and reducing the power consumption of the whole machine.

[0057] The application design has the following advantages: it has the characteristics of chain-like wireless ad hoc network, wireless transmission, wireless positioning, wireless collection and ultra-low power consumption. It is battery-powered, easy to install and maintain, and suitable for long-distance wireless hand-in-hand relay transmission and data collection in coal mine tunnels.

[0058] This application adopts the method of wireless mutual coverage between two wireless nodes for wireless layout. How to ensure that each data transmission node can realize hand-in-hand wireless relay data transmission. All transmission nodes in this application can be powered by batteries, which can ensure that each wireless base station can realize data relay transmission and data collection while ensuring low power consumption.

[0059] Coal mine communication in this application may refer to various types of up-and-down communications between various departments and links in the mine, with the coal mine enterprise as the center. Ethernet technology may be a local area network networking technology. RS485 bus transmission technology may be a two-wire, half-duplex, balanced transmission line multi-point communication technology. The backbone network may be a backbone network that is used to connect multiple areas or regions of high-speed network. The access point may be an access point that refers to a device for wireless local area network (WLAN) user terminals to access the network. The ad hoc network may also be called a wireless ad hoc network, which does not rely on a preset infrastructure or central controller, and has the characteristics of temporary networking, rapid deployment, no control center, and strong anti-destruction. The central station may be a device that receives the monitoring data transmitted by each monitoring terminal and performs diagnostic analysis, and manages the monitoring terminal at the same time. The intrinsically safe substation may be an intrinsically safe data acquisition, processing and control device that is allowed to be used in gas and coal dust explosion hazardous environments. The flameproof and intrinsically safe DC power supply may be a mine power supply with a flameproof enclosure and some circuits that are intrinsically safe.

[0060] Figure 2 is a schematic diagram of an optional coal mine tunnel communication system according to an embodiment of the present invention, such as Figure 2 As shown, the communication system of the coal mine tunnel may include: a central station, a switch, an intrinsically safe substation, a DC power supply, multiple wireless base stations, multiple intrinsically safe batteries and multiple sensors, wherein the DC power supply can power the intrinsically safe substation, multiple intrinsically safe batteries can power multiple wireless base stations respectively, and wireless relay transmission can be performed between the wireless base stations.

[0061] Figure 3 is a schematic diagram of an optional intrinsically safe substation structure according to an embodiment of the present invention, such as Figure 3 As shown, the intrinsically safe substation may include a first processor, a wired transmission module, a first wireless transmission module and a DC power supply.

[0062] Figure 4 is a schematic diagram of an optional wireless base station structure according to an embodiment of the present invention, such as Figure 4 As shown, the wireless base station may include a second processor, a broadband wireless transmission module, a Bluetooth wireless transmission module, a second wireless transmission module and an intrinsically safe battery pack, wherein the figure shows two broadband wireless transmission modules.

[0063] The first processor and the second processor mentioned above may adopt the STM32L431 main processor, and may also be determined according to actual needs, which is not limited here.

[0064] Figure 5 FIG. 1 is a schematic diagram of an optional communication system based on a coal mine tunnel for data transmission according to an embodiment of the present invention. Figure 5As shown, data transmission based on the communication system in coal mine tunnels may include data uplink and data downlink directions, wherein the data downlink direction may be data via n# wireless base station, 3# wireless base station, 2# wireless base station, 1# wireless base station, intrinsically safe substation to the central station, and the data uplink direction may be opposite to the data downlink direction.

[0065] Figure 6 FIG. 1 is a schematic diagram of identifying the spacing based on an optional communication system in a coal mine tunnel according to an embodiment of the present invention. Figure 6 As shown, UWB ranging can be performed between the 2# wireless base station, 1# wireless base station, intrinsically safe substation and central station in the communication system of the coal mine tunnel.

[0066] Figure 7 is a schematic diagram of optional communication system equipment numbering for a coal mine tunnel according to an embodiment of the present invention, such as Figure 7 As shown, the communication system of the coal mine tunnel may include n# wireless base station, 3# wireless base station, 2# wireless base station, 1# wireless base station, intrinsically safe substation to the central station.

[0067] According to another aspect of the embodiment of the present application, a communication method for coal mine tunnels is also provided, including: communicating with a central station based on an intrinsically safe substation, wherein the intrinsically safe substation is arranged at the air inlet of the gas extraction working face in the coal mine tunnel, and the intrinsically safe substation is used to indicate a communication substation that meets a preset safety level; communicating with the intrinsically safe substation in a wireless manner based on multiple wireless base stations, wherein the multiple wireless base stations are arranged at different positions in the gas extraction working face tunnel of the coal mine tunnel, and the multiple wireless base stations communicate in a chain networking manner in the coal mine tunnel; communicating with the multiple wireless base stations in a wireless manner based on multiple sensors, wherein the multiple sensors are arranged corresponding to the multiple wireless base stations, and the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data.

[0068] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present application is executed when the program is running.

[0069] The above-mentioned memory may refer to a device inside a computer for storing data and programs, and may include memory, hard disk, etc., wherein the memory may be used to temporarily store running programs and data, the hard disk may be used to store programs and data for a long time, and the memory may be used to enable the computer to read and write data, and execute programs; the above-mentioned processor may be responsible for executing instructions in computer programs and performing data processing, and may be responsible for controlling and executing various operations, including arithmetic operations, logical operations, data transmission, etc.

[0070] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in each embodiment of the present application.

[0071] The above-mentioned computer storage medium may refer to a medium in a computer memory used to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc.; the stored program included in the computer-readable storage medium may be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0072] The embodiments of the present application also provide a computer program product, including a computer program, which implements the methods in the various embodiments of the present application when executed by a processor.

[0073] The above-mentioned computer program product may refer to a software program that has been written, tested and released and can be run on a computer or other device. The computer program product may include an application, an operating system, tool software, etc., which is used to implement specific functions or solve specific problems.

[0074] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present application is implemented.

[0075] The above-mentioned non-volatile computer-readable storage medium may refer to a medium for storing data. The non-volatile computer-readable storage medium can keep the data from being lost when the power is off, and can be used to store long-term data, such as operating systems, applications, and user files. The non-volatile storage medium may include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0076] The embodiments of the present application also provide a computer program, which implements the methods in the above-mentioned embodiments of the present application when executed by a processor.

[0077] The above-mentioned computer program may refer to a collection of instructions used to tell a computer to perform a specific task or operation. A computer program may be written by a programmer using a specific programming language and may include algorithms, data structures, logic, and control flows. A computer program may be used for a variety of purposes, including application software, operating systems, and the like.

[0078] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0080] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0081] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0082] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0083] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A communication system for coal mine tunnels, characterized in that: include: An intrinsically safe substation is arranged at the air inlet of the gas extraction working face in the coal mine tunnel, and the intrinsically safe substation communicates with the central station in a wired manner, wherein the intrinsically safe substation is used to indicate a communication substation that meets a preset safety level; A plurality of wireless base stations are arranged at different positions in the gas extraction working face of the coal mine tunnel, the plurality of wireless base stations communicate with the intrinsically safe substation in a wireless manner, and the plurality of wireless base stations communicate in a chain networking manner in the coal mine tunnel; A plurality of sensors are arranged corresponding to the plurality of wireless base stations, and the plurality of sensors communicate with the plurality of wireless base stations in a wireless manner, wherein the plurality of sensors are used to collect status information in the coal mine tunnel to obtain sensor data.

2. The communication system for coal mine tunnels according to claim 1, characterized in that: The intrinsically safe substation comprises: A first transmission module, wherein the first transmission module at least includes a wired transmission module, a first wireless transmission module and a first processor, wherein the wired transmission module is used to communicate with the central station in a wired manner, the first wireless transmission module is used to communicate with the multiple wireless base stations in a wireless manner, and the first processor is used to process data provided by the wired transmission module and the first wireless transmission module; A direct current power supply is used to supply power to the first transmission module.

3. The communication system for coal mine tunnels according to claim 1, characterized in that: The multiple wireless base stations include: a target wireless base station, the target wireless base station communicating with the intrinsically safe substation in a wireless manner, wherein the target wireless base station is used to represent a wireless base station among the multiple wireless base stations whose distance to the intrinsically safe substation is less than a preset distance; Other wireless base stations, wherein the other wireless base stations communicate with the target wireless base station in a chain wireless manner, wherein the target wireless base station is used to represent other wireless base stations among the multiple wireless base stations except the target wireless base station.

4. The communication system for coal mine tunnels according to claim 3, characterized in that: Any one of the plurality of wireless base stations comprises: a second transmission module, wherein the second transmission module at least includes a second wireless transmission module, a Bluetooth wireless transmission module, a broadband wireless transmission module and a second processor, wherein the second wireless transmission module is used to communicate with the target device in a wireless manner, the Bluetooth wireless transmission module is used to communicate with the multiple sensors in a Bluetooth wireless manner, the broadband wireless transmission module is used to identify the distance between the target device and the second processor is used to process data provided by the second wireless transmission module, the Bluetooth wireless transmission module and the broadband wireless transmission module, and the target device includes at least one of the following: the target wireless base station, the other wireless base stations and the intrinsically safe substation; An intrinsically safe battery pack is used to power the second transmission module, wherein the intrinsically safe battery pack is used to represent a battery pack that meets the preset safety level.

5. The communication system for coal mine tunnels according to claim 1, characterized in that: The multiple wireless base stations are set with a preset working cycle, which includes a first time period and a second time period. The duration corresponding to the first time period is longer than the duration corresponding to the second time period. The multiple wireless base stations are in a sleep state during the first time period, and the multiple wireless base stations communicate during the second time period.

6. The communication system for coal mine tunnels according to claim 5, characterized in that: The multiple wireless base stations include a real-time clock module, and the multiple wireless base stations use the real-time clock module to perform time synchronization in the sleep state.

7. A communication method for coal mine tunnels, characterized in that: include: Based on the communication between the intrinsically safe substation and the central station, wherein the intrinsically safe substation is set at the air inlet of the gas extraction working face in the coal mine tunnel, and the intrinsically safe substation is used to indicate the communication substation that meets the preset safety level; Based on multiple wireless base stations, wireless communication is performed with the intrinsically safe substation, wherein the multiple wireless base stations are arranged at different positions in the gas extraction working face of the coal mine tunnel, and the multiple wireless base stations communicate in the coal mine tunnel in a chain networking manner; Based on multiple sensors, wireless communication is performed with the multiple wireless base stations, wherein the multiple sensors are arranged corresponding to the multiple wireless base stations, and the multiple sensors are used to collect status information in the coal mine tunnel to obtain sensor data.

8. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the communication method for coal mine tunnels described in claim 7 is executed when the program is run.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the communication method for coal mine tunnels described in claim 7.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the communication method for coal mine tunnels according to claim 7 when being executed by a processor.

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