Underground equipment communication method and device, electronic equipment and coal mine underground communication system

Abstract

The invention provides an underground equipment communication method and device, electronic equipment and a coal mine underground communication system, and relates to the technical field of coal mining. The underground equipment communication method comprises the following steps: determining a scheduling strategy for key task data and non-key task data of a working equipment terminal based on a first network performance index and a second network performance index in response to meeting a scheduling strategy updating condition; generating first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling strategy; and sending the first routing configuration information to the industrial Ethernet switch, and sending the second routing configuration information to the wireless base station. According to the invention, an underground multi-equipment data communication mechanism with high robustness and strong real-time performance is realized, so that safe and reliable automatic operation of a fully mechanized coal mining face is supported.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to an underground equipment communication method, device, electronic equipment and an underground coal mine communication system. Background Art

[0002] As coal mines advance toward intelligent operations, integrated intelligent mining control systems are placing increasingly stringent demands on communication networks. These systems must not only ensure reliable data transmission but also support intelligent functions such as multi-device coordinated control, fault recovery, and dynamic topology adjustment to achieve efficient and precise coal mining operations. In fully mechanized coal mining faces, the equipment system is highly complex, encompassing shearers, hydraulic supports, scraper conveyors, transfer machines, crushers, and various sensor systems. Data communication between these devices is fundamental to achieving automated operations.

[0003] However, current underground communications primarily rely on wired communication methods, including single wired communication links (such as CAN bus, RS485 bus, and EtherCAT Ethernet) and multi-link converged solutions (such as a combination of CAN bus and Industrial Ethernet). Practice has demonstrated that existing wired communication technologies struggle to achieve an effective balance between real-time performance, robustness, and scalability, becoming a key bottleneck hindering the advancement of automation in fully mechanized mining faces. Regarding real-time performance, wired communication links are limited by the physical properties of the medium. Over long distances or with high-density equipment access, signal attenuation and interference accumulation become prominent, significantly increasing communication latency. This makes it difficult for communication networks to meet the stringent millisecond-level response requirements of time-sensitive applications such as coal mining machine position feedback and hydraulic support coordination, thereby impacting the accuracy and efficiency of equipment collaborative operations. Regarding robustness, single communication links lack redundant backup mechanisms, making data congestion or link interruption highly likely in the event of abnormal conditions such as equipment failure, line aging, or electromagnetic interference.

[0004] Therefore, how to build an underground multi-device data communication mechanism with high robustness and strong real-time performance to support the safe and reliable automated operation of the fully mechanized mining working face is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present invention provides an underground equipment communication method, device, electronic equipment and coal mine underground communication system to realize an underground multi-device data communication mechanism with high robustness and strong real-time performance to support the safe and reliable automated operation of the fully mechanized mining working face.

[0006] The present invention provides an underground communication system for a coal mine, comprising an industrial Ethernet switch, an industrial Ethernet gateway, a wireless base station, a working equipment terminal in an underground working face compatible with a target Ethernet network protocol and a wireless network protocol, a network management platform, and a master clock server based on a precision time protocol. The industrial Ethernet switch and the working equipment terminal are connected via an industrial Ethernet based on the target Ethernet network protocol, the wireless base station and the working equipment terminal are connected via a wireless network, the wireless base station and the industrial Ethernet switch are connected via an industrial Ethernet gateway, the industrial Ethernet switch and the wireless base station are respectively connected to the network management platform, and time synchronization is achieved between the industrial Ethernet switch, the industrial Ethernet gateway, the wireless base station, the working equipment terminal, and the network management platform based on the master clock server.

[0007] The present invention further provides an underground equipment communication method, which is applied to the network management platform in the above-mentioned coal mine underground communication system, and comprises the following steps: A first network performance indicator is obtained from the industrial Ethernet switch, and a second network performance indicator is obtained from the wireless base station; based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step, it is determined whether a scheduling policy update condition is satisfied; in response to satisfying the scheduling policy update condition, a scheduling policy for the critical task data and non-critical task data of the working equipment terminal is determined based on the first network performance indicator and the second network performance indicator; based on the scheduling policy, first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station are generated; the first routing configuration information is sent to the industrial Ethernet switch, and the second routing configuration information is sent to the wireless base station.

[0008] According to a downhole equipment communication method provided by the present invention, the first network performance indicator includes a first communication quality score and an actual transmission bandwidth; the second network performance indicator includes a second communication quality score; the scheduling strategy for the critical mission data and non-critical mission data of the working equipment terminal is determined based on the first network performance indicator and the second network performance indicator, including: in response to the first communication quality score being greater than a first reliability threshold and the actual transmission bandwidth being less than a preset network bandwidth tolerance threshold, determining that the critical mission data and non-critical mission data are transmitted by the industrial Ethernet switch; or, in response to the first communication quality score being greater than the first reliability threshold and the actual transmission bandwidth being greater than the preset network bandwidth tolerance threshold, determining that the critical mission data are transmitted by the industrial Ethernet switch and the non-critical mission data are transmitted by the wireless base station; or, in response to the first communication quality score being less than the first reliability threshold and the second communication quality score being greater than the second reliability threshold, determining that the critical mission data and the non-critical mission data are transmitted by the wireless base station.

[0009] According to a downhole equipment communication method provided by the present invention, the target Ethernet network protocol is a time-sensitive network, the industrial Ethernet switch is a time-sensitive network switch, and the working equipment terminal is a hydraulic support electro-hydraulic controller installed on a hydraulic support; obtaining a first network performance indicator from the industrial Ethernet switch includes: obtaining the first network performance indicator from the time-sensitive network switch; determining a scheduling strategy for critical task data and non-critical task data of the working equipment terminal based on the first network performance indicator and the second network performance indicator, including: determining a scheduling strategy for critical task data and non-critical task data of the hydraulic support electro-hydraulic controller based on the first network performance indicator and the second network performance indicator; generating a first routing configuration for the industrial Ethernet switch according to the scheduling strategy includes: generating a first routing configuration for the time-sensitive network switch according to the scheduling strategy.

[0010] The present invention provides an underground equipment communication method, which is applied to the industrial Ethernet switch in the above-mentioned coal mine underground communication system, and the method includes the following steps: In response to receiving the first routing configuration information from the network management platform, the industrial Ethernet switch configures its own routing based on the first routing configuration information, so as to transmit the critical mission data, or the critical mission data and non-critical mission data, of the working equipment terminal that it is responsible for transmitting between the working equipment terminals based on the configured routing; wherein, the first routing configuration information is generated by the network management platform according to a scheduling strategy for the critical mission data and non-critical mission data of the working equipment terminal; the scheduling strategy is determined based on a first network performance indicator obtained from the industrial Ethernet switch and a second network performance indicator obtained from the wireless base station.

[0011] According to a downhole equipment communication method provided by the present invention, the target Ethernet network protocol is a time-sensitive network, the industrial Ethernet switch is a time-sensitive network switch, and the working equipment terminal is a hydraulic support electro-hydraulic controller installed on the hydraulic support; in response to receiving the first routing configuration information from the network management platform, the industrial Ethernet switch configures its own routing based on the first routing configuration information, so as to transmit the critical mission data, or critical mission data and non-critical mission data of the working equipment terminal that it is responsible for transmitting, between the working equipment terminals based on the configured routing, including: in response to receiving the first routing configuration information from the network management platform, the time-sensitive network switch configures its own routing based on the first routing configuration information, so as to transmit the critical mission data, or critical mission data and non-critical mission data of the hydraulic support electro-hydraulic controller that it is responsible for transmitting, between the hydraulic support electro-hydraulic controllers based on the configured routing.

[0012] The present invention provides an underground equipment communication method, which is applied to a wireless base station in the above-mentioned coal mine underground communication system, and comprises the following steps: In response to receiving the second routing configuration information from the network management platform, the wireless base station configures its own routing based on the second routing configuration information, so as to transmit the non-critical mission data of the working equipment terminal that it is responsible for transmitting, or the critical mission data and non-critical mission data, between the working equipment terminals based on the configured routing; wherein, the second routing configuration information is generated by the network management platform according to the scheduling strategy for the critical mission data and non-critical mission data of the working equipment terminal; the scheduling strategy is determined based on the first network performance indicator obtained from the industrial Ethernet switch and the second network performance indicator obtained from the wireless base station.

[0013] The present invention provides an underground equipment communication device, which is installed on the network management platform of the above-mentioned coal mine underground communication system, and includes: An acquisition module is used to obtain a first network performance indicator from the industrial Ethernet switch and a second network performance indicator from the wireless base station; a first determination module is used to determine whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; a second determination module is used to determine, in response to satisfying the scheduling policy update condition, a scheduling policy for the critical task data and non-critical task data of the working equipment terminal based on the first network performance indicator and the second network performance indicator; a generation module is used to generate first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy; a sending module is used to send the first routing configuration information to the industrial Ethernet switch and the second routing configuration information to the wireless base station.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the downhole equipment communication method described above is implemented.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described downhole equipment communication methods.

[0016] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned downhole equipment communication methods.

[0017] The underground equipment communication method, device, electronic device and coal mine underground communication system provided by the present invention, the network management platform monitors the network performance indicators of the industrial Ethernet switch and the wireless base station in real time, and judges whether the scheduling strategy update conditions are met based on the changes in the network performance indicators at the current moment and the previous time step, and can dynamically adjust the transmission scheduling strategy for the critical task data and non-critical task data of the working equipment terminal. After determining that the scheduling strategy needs to be updated, the network management platform generates and sends the corresponding first routing configuration information to the industrial Ethernet switch and the second routing configuration information to the wireless base station based on the current network performance indicators of the coal mine underground communication system, so as to optimize the data transmission path, bandwidth allocation and other parameters. The above-mentioned dynamic scheduling and configuration mechanism effectively improves the flexibility and adaptability of the coal mine underground communication system, ensures the efficient and reliable transmission of critical task data, and at the same time reasonably allocates network resources, thereby improving the overall communication efficiency and system stability. Thereby, an underground multi-device data communication mechanism with high robustness and strong real-time performance is realized to support the safe and reliable automated operation of the comprehensive mining working face. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the schematic diagrams of the coal mine underground communication system provided by the present invention.

[0020] Figure 2 This is the second schematic diagram of the coal mine underground communication system provided by the present invention.

[0021] Figure 3 This is one of the flow charts of the downhole equipment communication method provided by the present invention.

[0022] Figure 4 This is the second flow chart of the downhole equipment communication method provided by the present invention.

[0023] Figure 5 This is the third flow chart of the downhole equipment communication method provided by the present invention.

[0024] Figure 6 It is a schematic diagram of the clock synchronization mechanism of the coal mine underground communication system provided by the present invention.

[0025] Figure 7 It is a structural schematic diagram of the downhole equipment communication device provided by the present invention.

[0026] Figure 8 It is a structural schematic diagram of the electronic device provided by the present invention.

[0027] Reference numerals: 11: First network management platform; 21: First wireless base station; 31: Industrial Ethernet gateway; 41: Industrial Ethernet switch; 51: Master clock server; 61-1: First working equipment terminal; 61-2: Second working equipment terminal; 61-3: Third working equipment terminal; 61-N: Nth working equipment terminal; 12: Second network management platform; 22: Second wireless base station; 32: Time-sensitive network gateway; 42: Time-sensitive network switch; 52: PTP master clock server; 62-1: First hydraulic support electro-hydraulic controller; 62-2: Second hydraulic support electro-hydraulic controller; 62-3: Third hydraulic support electro-hydraulic controller; 62-N: Nth hydraulic support electro-hydraulic controller. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] The following combination Figure 1 The coal mine underground communication system of the present invention is described.

[0030] Figure 1 Schematic diagram of the coal mine underground communication system provided by the present invention. Figure 1 As shown, the coal mine underground communication system includes an industrial Ethernet switch 41, an industrial Ethernet gateway 31, a first wireless base station 21, a first working equipment terminal 61-1 compatible with the target Ethernet network protocol and the wireless network protocol, a second working equipment terminal 61-2, a third working equipment terminal 61-3, ..., an Nth working equipment terminal 61-N, a first network management platform 11 and a master clock server 51 based on the precision time protocol.

[0031] The industrial Ethernet switch 41 and the first to Nth working device terminals 61 - 1 to 61 -N are connected via industrial Ethernet based on the target Ethernet network protocol.

[0032] Target Ethernet network protocols may include, but are not limited to, TSN (Time-Sensitive Networking), EtherCAT (Ethernet Control Automation Technology), and PROFINET (Automation Bus Standard). These protocols all offer excellent real-time, deterministic, high-bandwidth, and low-latency performance, and support time synchronization.

[0033] Accordingly, industrial Ethernet based on the target Ethernet network protocol may include but is not limited to TSN (Time-Sensitive Networking), EtherCAT (Ethernet Control Automation Technology) network, PROFINET (Automation Bus Standard) network, etc.

[0034] Industrial Ethernet switches are switches that support target Ethernet network protocols, such as time-sensitive networking switches.

[0035] The working equipment terminal is the control terminal of the working equipment (for example, hydraulic support, coal mining machine, etc.) installed on the underground working face.

[0036] In some embodiments, the working equipment terminal is an electro-hydraulic controller of a hydraulic support.

[0037] The hydraulic support electro-hydraulic controller is responsible for precisely controlling the support's support's support, movement, and lifting movements, and participates in the automated control process of the underground working surface. The hydraulic support electro-hydraulic controller is connected to an Industrial Ethernet switch via a wired connection (such as a TSN network), enabling efficient data transmission and precise equipment control. The introduction of wireless networks provides more flexible communication options for the hydraulic support electro-hydraulic controller. Furthermore, utilizing the QoS (Quality of Service) mechanism of Industrial Ethernet networks prioritizes communication within the hydraulic support electro-hydraulic controller, ensuring the timely transmission and execution of control commands.

[0038] The first wireless base station 21 and the first working device terminal 61 - 1 , the second working device terminal 61 - 2 , the third working device terminal 61 - 3 , . . . , the Nth working device terminal 61 -N are connected via a wireless network.

[0039] As the core device of the wireless communication network in underground coal mine communication systems, wireless base stations are responsible for providing wireless network access services. They support low-latency, high-reliability, time-sensitive data communication between mobile devices underground and devices connected to industrial Ethernet networks (e.g., time-sensitive networks).

[0040] During implementation, wireless base stations incorporate or integrate protocol stacks supporting the target Industrial Ethernet network, such as Wi-Fi 6 / 6E / 7 or 5G NR URLLC, enabling seamless expansion of the target Industrial Ethernet network's mechanisms. The wireless base stations employ a time-aware scheduling mechanism similar to that of the target Industrial Ethernet network, employing differentiated resource allocation strategies for different data types, prioritizing low-latency transmission of real-time, sensitive data.

[0041] In addition, wireless base stations enable Wi-Fi Multimedia (WMM) or 5G network-specific QoS policies to prioritize time-sensitive data, ensuring quality of service and determinism during wireless link transmission. Furthermore, wireless base stations can be integrated into comprehensive network management tools for continuous network monitoring and management. Monitoring metrics include, but are not limited to, latency, jitter, and packet loss to ensure wireless network performance and reliability.

[0042] Through the above configuration, the wireless base station can be effectively integrated with the target industrial Ethernet network, providing efficient and reliable wireless communication services for equipment in the underground working face, supporting low-latency, high-reliability time-sensitive data communication, thereby meeting the needs of intelligent coal mining.

[0043] The first wireless base station 21 and the industrial Ethernet switch 41 are connected via the industrial Ethernet gateway 31 .

[0044] An industrial Ethernet gateway is a gateway that supports target Ethernet network protocols, such as a time-sensitive networking gateway.

[0045] In underground coal mine communication systems, industrial Ethernet gateways are deployed between wireless communication base stations and industrial Ethernet switches, serving as a bridge between the industrial Ethernet network and the wireless network. They are responsible for data protocol conversion and data flow management between the two networks. Specifically, the industrial Ethernet gateway converts data protocols on the industrial Ethernet network (such as TSN-related protocols like IEEE 802.1Qbv) into data protocols supported by the wireless network (such as Wi-Fi or 5G-related protocols), and performs reverse conversion, ensuring smooth data transmission between the two networks.

[0046] In addition, the Industrial Ethernet Gateway also has the ability to manage and schedule data flows to ensure orderly data transmission and avoid data conflicts and congestion. By mapping QoS (Quality of Service) tags on passing data packets, it ensures that the priority and quality of service settings of the Industrial Ethernet network can be maintained even in a wireless network environment.

[0047] The industrial Ethernet switch 41 and the first wireless base station 21 are connected to the first network management platform 11 respectively.

[0048] A network management platform is a software system used to comprehensively monitor, configure, manage, and optimize underground coal mine communication systems. The network management platform enables automatic link redundancy switching. When a failure or performance degradation is detected on the primary link (the Industrial Ethernet network), the network management platform automatically switches data communications for active equipment to the backup link (the wireless network), ensuring uninterrupted data transmission even under extreme conditions (for example, a physical failure of the wired network).

[0049] The network management platform can also allocate network resources based on network load and device priority, ensuring low-latency, high-reliability transmission of critical data and improving overall network efficiency.

[0050] Among them, time synchronization is achieved between the industrial Ethernet switch 41, the industrial Ethernet gateway 31, the first wireless base station 21, the first working equipment terminal 61-1, the second working equipment terminal 61-2, the third working equipment terminal 61-3,..., the Nth working equipment terminal 61-N and the first network management platform 11 based on the master clock server 51.

[0051] In underground coal mine communication systems, time synchronization is achieved by deploying a PTP (Precision Time Protocol) master clock server as a unified time reference. This server can be located at the central node of the underground network to optimize coverage and synchronization accuracy.

[0052] Industrial Ethernet switches, industrial Ethernet gateways, wireless base stations, and working equipment terminals (such as hydraulic support electro-hydraulic controllers) are all configured as PTP clients. Figure 6 As shown in Figure 1, these devices communicate with the master clock server via the IEEE 1588 PTP protocol to achieve high-precision time synchronization.

[0053] The specific time synchronization process is as follows: The PTP master clock server periodically sends time synchronization messages containing the current timestamp information. Upon receiving these messages, each PTP client device adjusts its own clock based on the timestamp information in the message to ensure consistency with the master clock server's time. This process continues to maintain time synchronization accuracy. For example, clock synchronization accuracy can be controlled to within 1 microsecond, ensuring efficient real-time data transmission and device linkage.

[0054] By deploying a PTP master clock server and configuring each device as a PTP client, high-precision time synchronization is achieved among the Industrial Ethernet switches, Industrial Ethernet gateways, wireless base stations, and working equipment terminals in the underground coal mine communication system. This process ensures time consistency across all devices in the underground coal mine communication system.

[0055] In some embodiments, the target Ethernet network protocol is a time-sensitive network, the working equipment terminal is a hydraulic support electro-hydraulic controller, and the coal mine underground communication system is as follows: Figure 2 The coal mine underground communication system includes a time-sensitive network switch 42, a time-sensitive network gateway 32, a second wireless base station 22, a first hydraulic support electro-hydraulic controller 62-1, a second hydraulic support electro-hydraulic controller 62-2, a third hydraulic support electro-hydraulic controller 62-3, ..., an Nth hydraulic support electro-hydraulic controller 62-N, which are compatible with both time-sensitive network and wireless network protocols, a second network management platform 12, and a PTP master clock server 52.

[0056] The coal mine underground communication system provided by the present invention realizes an efficient and reliable communication architecture by integrating an industrial Ethernet switch, an industrial Ethernet gateway, a wireless base station, an underground working face working equipment terminal compatible with the target Ethernet network protocol and the wireless network protocol, a network management platform and a master clock server based on the precise time protocol. The industrial Ethernet switch and the working equipment terminal adopt an industrial Ethernet connection based on the target Ethernet network protocol to ensure high-speed data transmission and stability; the wireless base station and the working equipment terminal are connected through a wireless network, providing flexible communication coverage and access methods. The industrial Ethernet gateway serves as a bridge between the industrial Ethernet switch and the wireless base station, realizing data protocol conversion and data flow management between the two networks. At the same time, all devices in the entire system achieve high-precision time synchronization based on the master clock server, ensuring the efficiency and accuracy of real-time data transmission and equipment linkage. This integrated communication system architecture effectively improves the communication efficiency and reliability of coal mines.

[0057] The following combination Figure 3-Figure 6 The coal mine underground communication system of the present invention is described.

[0058] Figure 3 This is one of the flow charts of the downhole equipment communication method provided by the present invention, which is applied to Figure 1 The network management platform of the coal mine underground communication system shown in Figure 3 As shown, the method includes the following steps: Step 301: Acquire a first network performance indicator from an industrial Ethernet switch, and acquire a second network performance indicator from a wireless base station.

[0059] For a detailed description of Industrial Ethernet switches and wireless base stations, see Figure 1 The relevant content in will not be repeated here.

[0060] The first network performance indicator is an indicator used to evaluate the network communication status of the industrial Ethernet switch, which includes a first communication quality score and an actual transmission bandwidth.

[0061] The first communication quality score is used to evaluate the data communication quality of the Industrial Ethernet network in which the Industrial Ethernet switches of the coal mine underground communication system reside. It is calculated based on multiple network performance indicators (such as latency, jitter, and packet loss rate) monitored by the Industrial Ethernet switches themselves, reflecting the stability and reliability of the Industrial Ethernet network.

[0062] Actual transmission bandwidth refers to the actual data transmission bandwidth currently used by the Industrial Ethernet network where the Industrial Ethernet switch is located. It is used to measure the current transmission load of the Industrial Ethernet network.

[0063] In some embodiments, the industrial Ethernet network deployed in the coal mine underground communication system is a time-sensitive network, and the industrial Ethernet switch is a time-sensitive network switch. The first network performance indicator can be obtained from the time-sensitive network switch.

[0064] The second network performance indicator is an indicator for evaluating the network communication status of the wireless network of the coal mine underground communication system, which includes a second communication quality score.

[0065] The second communication quality score is used to evaluate the data communication quality of the wireless network where the wireless base station is located. It is calculated based on the network performance indicators of multiple wireless networks (such as delay, jitter, packet loss rate, etc.) monitored by the wireless base station itself, and reflects the stability and reliability of the wireless network.

[0066] Step 302: Determine whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step.

[0067] The policy update conditions are one or more pre-defined conditions based on the current first network performance indicator and the first network performance indicator recorded at the previous time step. When these conditions are met, the network management platform determines that the network status of the industrial Ethernet network in the coal mine underground communication system has changed and requires updating the scheduling policy for mission-critical and non-mission-critical data of working equipment terminals. This optimizes the allocation and utilization of network resources in the coal mine underground communication system and improves the efficiency and reliability of data transmission.

[0068] The policy update conditions include: the first communication quality score at the current moment is greater than the first reliability threshold, and the first quality score recorded at the previous time step is less than the first reliability threshold, or the first communication quality score at the current moment is less than the first reliability threshold, and the first quality score recorded at the previous time step is greater than the first reliability threshold; the actual transmission bandwidth at the current moment is less than the preset network bandwidth tolerance threshold, and the actual transmission bandwidth at the previous moment is greater than the preset network bandwidth tolerance threshold, or the actual transmission bandwidth at the current moment is greater than the preset network bandwidth tolerance threshold, and the actual transmission bandwidth at the previous moment is less than the preset network bandwidth tolerance threshold.

[0069] Step 303: In response to satisfying the scheduling policy update condition, a scheduling policy for the critical task data and non-critical task data of the working device terminal is determined based on the first network performance indicator and the second network performance indicator.

[0070] Mission-critical data is data that significantly impacts underground coal mine production operations and must be accurately and reliably transmitted to its destination within a specified timeframe. Examples include control instructions for hydraulic supports and safety alarm signals. Loss or delayed transmission of mission-critical data can lead to production accidents or safety hazards.

[0071] Non-mission-critical data is less important and requires less real-time performance than mission-critical data. Examples include general sensor data or monitoring information. While transmission delays or loss can be tolerated to a certain extent, transmission quality and efficiency must still be guaranteed.

[0072] During the specific implementation process, the critical mission data and non-critical mission data can be marked by the working equipment terminal (for example, the hydraulic support electro-hydraulic controller) in the coal mine underground communication system.

[0073] The scheduling policy is a set of data transmission rules developed based on the current network status of the underground coal mine communication system and the importance and real-time requirements of mission-critical and non-mission-critical data. It determines how network resources are allocated to transmit different types of data, thereby optimizing network performance and improving data transmission efficiency and reliability.

[0074] In some embodiments, the working equipment terminal is a hydraulic support electro-hydraulic controller installed on the hydraulic support, and a scheduling strategy for critical task data and non-critical task data of the hydraulic support electro-hydraulic controller can be determined based on the first network performance indicator and the second network performance indicator.

[0075] In some embodiments, the scheduling strategy is as follows: When the first communication quality score is greater than the first reliability threshold and the actual transmission bandwidth is less than the preset network bandwidth tolerance threshold, it is determined that the industrial Ethernet switch is used to transmit the critical mission data and the non-critical mission data.

[0076] When the first communication quality score is greater than the first reliability threshold and the actual transmission bandwidth is greater than the preset network bandwidth tolerance threshold, it is determined that the industrial Ethernet switch transmits the critical mission data and the wireless base station transmits the non-critical mission data.

[0077] When the first communication quality score is less than the first reliability threshold and the second communication quality score is greater than the second reliability threshold, it is determined that the wireless base station transmits the mission-critical data and the mission-non-critical data.

[0078] Step 304: Generate first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy.

[0079] The first routing configuration information is the data transmission path and parameter configuration information generated for the industrial Ethernet switch. Based on the data transmission requirements and priorities of the industrial Ethernet network determined by the scheduling policy, it configures the data transmission routing path, bandwidth allocation, priority setting, and other parameters for the industrial Ethernet switch to ensure that mission-critical data can be transmitted efficiently and reliably to its destination.

[0080] In some embodiments, the target Ethernet network protocol is a time-sensitive network, and the industrial Ethernet switch is a time-sensitive network switch. A first routing configuration for the time-sensitive network switch can be generated according to a scheduling policy.

[0081] The second routing configuration information is data transmission path and parameter configuration information generated for the wireless base station. Based on the wireless network's data transmission requirements and priorities determined by the scheduling policy, it configures the wireless base station with parameters such as data transmission routing paths, bandwidth allocation, and priority settings to ensure efficient and reliable transmission of mission-critical data within the wireless network.

[0082] Step 305: Send the first routing configuration information to the industrial Ethernet switch, and send the second routing configuration information to the wireless base station.

[0083] To achieve efficient and reliable data transmission in our underground coal mine communication system, we adopted a communication architecture based on Time-Sensitive Networking (TSN). The system primarily consists of a TSN switch, wireless base stations, a hydraulic support electro-hydraulic controller installed on the hydraulic support (serving as a working equipment terminal), a network management platform, and a master clock server based on the Precision Time Protocol.

[0084] Figure 4 This is the second flow chart of the downhole equipment communication method provided by the present invention, which is applied to Figure 1 The industrial Ethernet switch in the coal mine underground communication system shown in Figure 4 As shown, the method includes the following steps: Step 401. In response to receiving the first routing configuration information from the network management platform, the industrial Ethernet switch configures its own routing based on the first routing configuration information, so as to transmit the non-critical mission data of the working equipment terminals that it is responsible for transmitting, or the critical mission data and non-critical mission data, between the working equipment terminals based on the configured routing.

[0085] The first routing configuration information is generated by the network management platform according to the scheduling strategy for critical task data and non-critical task data of the working device terminal; the scheduling strategy is determined based on the first network performance indicator obtained from the industrial Ethernet switch and the second network performance indicator obtained from the wireless base station.

[0086] For a detailed description of the first routing configuration information, see Figure 3 The relevant content in will not be repeated here.

[0087] In some embodiments, the industrial Ethernet switch determines, based on the first routing configuration information, that it transmits the mission-critical data and non-mission-critical data of the working equipment terminal. Then, after the industrial Ethernet switch performs routing configuration and sends control instructions to the working equipment terminal, it switches the transmission paths of the mission-critical data and non-mission-critical data of the working equipment terminal to the industrial Ethernet network.

[0088] In some embodiments, the industrial Ethernet switch determines that it transmits the critical mission data of the working equipment terminal based on the first routing configuration information. After the industrial Ethernet switch performs routing configuration and sends control instructions to the working equipment terminal, it switches the transmission path of the critical mission data of the working equipment terminal to the industrial Ethernet network.

[0089] In some embodiments, the industrial Ethernet switch determines that it will temporarily not transmit the critical mission data and non-critical mission data of the working equipment terminal based on the first routing configuration information. Then, the industrial Ethernet switch terminates its transmission of the critical mission data and non-critical mission data to the working equipment terminal through the routing configuration.

[0090] In some embodiments, the target Ethernet network protocol is a time-sensitive network (TSN), the industrial Ethernet switch is a TSN switch, and the working device terminal is a hydraulic support electro-hydraulic controller installed on the hydraulic support. After receiving the first routing configuration information from the network management platform, the TSN switch configures its own routing based on the first routing configuration information, so as to transmit the mission-critical data, or mission-critical data and non-mission-critical data, of the hydraulic support electro-hydraulic controller, which it is responsible for transmitting, between the hydraulic support electro-hydraulic controllers based on the configured routing.

[0091] Figure 5 This is the third flow chart of the downhole equipment communication method provided by the present invention, which is applied to Figure 1 The wireless base station of the coal mine underground communication system shown in FIG. Figure 5 The method shown includes the following steps: Step 501. In response to receiving the second routing configuration information from the network management platform, the wireless base station configures its own routing based on the second routing configuration information, so as to transmit the non-critical mission data of the working equipment terminals that it is responsible for transmitting, or the critical mission data and non-critical mission data, between the working equipment terminals based on the configured routing.

[0092] The second routing configuration information is generated by the network management platform according to the scheduling strategy for the critical task data and non-critical task data of the working equipment terminal; the scheduling strategy is determined based on the first network performance indicator obtained from the industrial Ethernet switch and the second network performance indicator obtained from the wireless base station.

[0093] For a detailed description of the second routing configuration information, see Figure 3 The relevant content in will not be repeated here.

[0094] In some embodiments, the wireless base station determines, based on the second routing configuration information, that it transmits the mission-critical data and non-mission-critical data of the working equipment terminal. Then, after the wireless base station performs routing configuration and sends control instructions to the working equipment terminal, it switches the transmission paths of the mission-critical data and non-mission-critical data of the working equipment terminal to the wireless network.

[0095] In some embodiments, the wireless base station determines, based on the second routing configuration information, that it transmits the non-critical mission data of the working equipment terminal. Then, after the wireless base station performs routing configuration and sends control instructions to the working equipment terminal, it switches the transmission path of the non-critical mission data of the working equipment terminal to the wireless network.

[0096] In some embodiments, the wireless base station determines that it will not transmit the critical mission data and non-critical mission data of the working equipment terminal based on the second routing configuration information. Then, the wireless base station terminates its transmission of the critical mission data and non-critical mission data to the working equipment terminal through routing configuration.

[0097] The downhole equipment communication device provided by the present invention is described below. The downhole equipment communication device described below and the downhole equipment communication method described above can be referenced to each other.

[0098] Figure 7 This is a schematic diagram of the structure of the underground equipment communication device provided by the present invention, which is installed in the network management platform of the underground communication system of the coal mine. Figure 7 As shown, the downhole equipment communication device 700 includes the following modules.

[0099] The acquisition module 710 is configured to acquire a first network performance indicator from the industrial Ethernet switch and a second network performance indicator from the wireless base station.

[0100] The first determination module 720 is configured to determine whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step.

[0101] The second determination module 730 is used to determine the scheduling strategy for the critical task data and non-critical task data of the working device terminal based on the first network performance indicator and the second network performance indicator in response to the scheduling strategy update condition being met.

[0102] The generating module 740 is configured to generate first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy.

[0103] The sending module 750 is configured to send the first routing configuration information to the industrial Ethernet switch, and send the second routing configuration information to the wireless base station.

[0104] Figure 8 An example of a physical structure diagram of an electronic device is shown below. Figure 8 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to execute a downhole equipment communication method, which includes: obtaining a first network performance indicator from the industrial Ethernet switch and a second network performance indicator from the wireless base station; determining whether a scheduling policy update condition is satisfied based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; in response to satisfying the scheduling policy update condition, determining a scheduling policy for critical task data and non-critical task data of the working equipment terminal based on the first network performance indicator and the second network performance indicator; generating first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station based on the scheduling policy; sending the first routing configuration information to the industrial Ethernet switch, and sending the second routing configuration information to the wireless base station.

[0105] Furthermore, the logic instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0106] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the downhole equipment communication method provided by the above methods, which includes: obtaining a first network performance indicator from the industrial Ethernet switch and obtaining a second network performance indicator from the wireless base station; determining whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; in response to meeting the scheduling policy update condition, determining a scheduling policy for critical task data and non-critical task data of the working equipment terminal based on the first network performance indicator and the second network performance indicator; generating first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy; sending the first routing configuration information to the industrial Ethernet switch, and sending the second routing configuration information to the wireless base station.

[0107] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the downhole equipment communication method provided by the above-mentioned methods, the method comprising: obtaining a first network performance indicator from the industrial Ethernet switch and obtaining a second network performance indicator from the wireless base station; determining whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; in response to meeting the scheduling policy update condition, determining a scheduling policy for critical task data and non-critical task data of the working equipment terminal based on the first network performance indicator and the second network performance indicator; generating first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy; sending the first routing configuration information to the industrial Ethernet switch, and sending the second routing configuration information to the wireless base station.

[0108] On the other hand, the present invention also provides a coal mine underground communication system, including an industrial Ethernet switch, an industrial Ethernet gateway, a wireless base station, a working equipment terminal in an underground working face compatible with the target Ethernet network protocol and the wireless network protocol, a network management platform and a master clock server based on the precise time protocol, the industrial Ethernet switch and the working equipment terminal are connected via an industrial Ethernet based on the target Ethernet network protocol, the wireless base station and the working equipment terminal are connected via a wireless network, the wireless base station and the industrial Ethernet switch are connected via an industrial Ethernet gateway, the industrial Ethernet switch and the wireless base station are respectively connected to the network management platform, and time synchronization is achieved between the industrial Ethernet switch, the industrial Ethernet gateway, the wireless base station, the working equipment terminal and the network management platform based on the master clock server.

[0109] The network management platform obtains a first network performance indicator from the industrial Ethernet switch and obtains a second network performance indicator from the wireless base station.

[0110] The network management platform determines whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step.

[0111] The network management platform, in response to satisfying the scheduling policy update condition, determines a scheduling policy for the critical task data and non-critical task data of the working device terminal based on the first network performance indicator and the second network performance indicator.

[0112] The network management platform generates first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy.

[0113] The network management platform sends the first routing configuration information to the industrial Ethernet switch, and sends the second routing configuration information to the wireless base station.

[0114] The industrial Ethernet switch, in response to receiving the first routing configuration information from the network management platform, configures its own routing based on the first routing configuration information, so as to transmit the critical mission data of the working equipment terminal, or the critical mission data and non-critical mission data, that it is responsible for transmitting, between the working equipment terminals based on the configured routing.

[0115] In response to receiving the second routing configuration information from the network management platform, the wireless base station configures its own routing based on the second routing configuration information, so as to transmit the non-critical mission data of the working equipment terminal that it is responsible for transmitting, or the critical mission data and non-critical mission data, between the working equipment terminals based on the configured routing.

[0116] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0117] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A coal mine underground communication system, characterized in that: It includes an industrial Ethernet switch, an industrial Ethernet gateway, a wireless base station, a working equipment terminal in an underground working face compatible with a target Ethernet network protocol and a wireless network protocol, a network management platform and a master clock server based on a precise time protocol. The industrial Ethernet switch and the working equipment terminal are connected via an industrial Ethernet based on the target Ethernet network protocol, the wireless base station and the working equipment terminal are connected via a wireless network, the wireless base station and the industrial Ethernet switch are connected via an industrial Ethernet gateway, the industrial Ethernet switch and the wireless base station are respectively connected to the network management platform, and time synchronization is achieved between the industrial Ethernet switch, the industrial Ethernet gateway, the wireless base station, the working equipment terminal and the network management platform based on the master clock server.

2. A method for communicating with downhole equipment, characterized in that: The method is applied to the network management platform in the coal mine underground communication system according to claim 1, and the method comprises: Acquire a first network performance indicator from the industrial Ethernet switch and acquire a second network performance indicator from the wireless base station; Determining whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; In response to satisfying the scheduling policy update condition, determining a scheduling policy for the critical task data and non-critical task data of the working device terminal based on the first network performance indicator and the second network performance indicator; generating, according to the scheduling policy, first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station; The first routing configuration information is sent to the industrial Ethernet switch, and the second routing configuration information is sent to the wireless base station.

3. The downhole equipment communication method according to claim 2, characterized in that: The first network performance indicator includes a first communication quality score and an actual transmission bandwidth; the second network performance indicator includes a second communication quality score; The determining, based on the first network performance indicator and the second network performance indicator, a scheduling strategy for the critical task data and the non-critical task data of the working device terminal includes: In response to the first communication quality score being greater than a first reliability threshold and the actual transmission bandwidth being less than a preset network bandwidth tolerance threshold, determining that the mission-critical data and the non-mission-critical data are transmitted by the industrial Ethernet switch; Alternatively, in response to the first communication quality score being greater than the first reliability threshold and the actual transmission bandwidth being greater than a preset network bandwidth tolerance threshold, determining that the mission-critical data is transmitted by the industrial Ethernet switch and the non-mission-critical data is transmitted by the wireless base station; Alternatively, in response to the first communication quality score being smaller than the first reliability threshold and the second communication quality score being larger than a second reliability threshold, it is determined that the wireless base station transmits the mission-critical data and the non-mission-critical data.

4. The downhole equipment communication method according to claim 2 or 3, characterized in that: The target Ethernet network protocol is a time-sensitive network, the industrial Ethernet switch is a time-sensitive network switch, and the working equipment terminal is a hydraulic support electro-hydraulic controller installed on the hydraulic support; The obtaining of a first network performance indicator from the industrial Ethernet switch includes: Obtaining the first network performance indicator from the time-sensitive network switch; The determining, based on the first network performance indicator and the second network performance indicator, a scheduling strategy for the critical task data and the non-critical task data of the working device terminal includes: Determining a scheduling strategy for critical task data and non-critical task data of the hydraulic support electro-hydraulic controller based on the first network performance indicator and the second network performance indicator; Generating a first routing configuration for the industrial Ethernet switch according to the scheduling policy includes: A first routing configuration for the time-sensitive network switch is generated according to the scheduling policy.

5. A method for communicating with downhole equipment, characterized in that: The method is applied to the industrial Ethernet switch in the coal mine underground communication system according to claim 1, and the method includes: In response to receiving the first routing configuration information from the network management platform, the industrial Ethernet switch configures its own routing based on the first routing configuration information, so as to transmit the mission-critical data and the mission-critical data, or the mission-critical data and the non-mission-critical data, of the working device terminals that it is responsible for transmitting between the working device terminals based on the configured routing; Among them, the first routing configuration information is generated by the network management platform according to the scheduling strategy for the critical task data and non-critical task data of the working equipment terminal; the scheduling strategy is determined based on the first network performance indicator obtained from the industrial Ethernet switch and the second network performance indicator obtained from the wireless base station.

6. The downhole equipment communication method according to claim 5, characterized in that: The target Ethernet network protocol is a time-sensitive network, the industrial Ethernet switch is a time-sensitive network switch, and the working equipment terminal is a hydraulic support electro-hydraulic controller installed on the hydraulic support; In response to receiving the first routing configuration information from the network management platform, the industrial Ethernet switch configures its own routing based on the first routing configuration information, so as to transmit the mission-critical data or the mission-critical data and the non-mission-critical data of the working device terminal that it is responsible for transmitting between the working device terminals based on the configured routing, including: In response to receiving the first routing configuration information from the network management platform, the time-sensitive network switch configures its own routing based on the first routing configuration information, so as to transmit the critical mission data of the hydraulic support electro-hydraulic controller, or the critical mission data and non-critical mission data, that it is responsible for transmitting, between the hydraulic support electro-hydraulic controllers based on the configured routing.

7. A method for communicating with downhole equipment, characterized in that: The method is applied to the wireless base station in the coal mine underground communication system according to claim 1, and the method comprises: In response to receiving the second routing configuration information from the network management platform, the wireless base station configures its own routing based on the second routing configuration information, so as to transmit the non-critical mission data and the critical mission data of the working device terminal, or the non-critical mission data, that it is responsible for transmitting, between the working device terminals based on the configured routing; Among them, the second routing configuration information is generated by the network management platform according to the scheduling strategy for the critical task data and non-critical task data of the working equipment terminal; the scheduling strategy is determined based on the first network performance indicator obtained from the industrial Ethernet switch and the second network performance indicator obtained from the wireless base station.

8. A downhole equipment communication device, characterized in that: The device is installed on the network management platform of the coal mine underground communication system according to claim 1, and the device includes: an acquisition module, configured to acquire a first network performance indicator from the industrial Ethernet switch and a second network performance indicator from the wireless base station; A first determining module is used to determine whether a scheduling policy update condition is met based on the first network performance indicator at the current moment and the first network performance indicator recorded at the previous time step; a second determining module, configured to determine, in response to satisfying the scheduling policy update condition, a scheduling policy for the critical task data and non-critical task data of the working device terminal based on the first network performance indicator and the second network performance indicator; A generating module, configured to generate first routing configuration information for the industrial Ethernet switch and second routing configuration information for the wireless base station according to the scheduling policy; A sending module is configured to send the first routing configuration information to the industrial Ethernet switch, and send the second routing configuration information to the wireless base station.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the downhole equipment communication method according to any one of claims 2 to 7 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the downhole equipment communication method according to any one of claims 2 to 7 is implemented.

Images