Remote control system applied to main ventilation of mine

Abstract

The invention provides a remote control system applied to main ventilation of a mine, and relates to the technical field of mine control, the remote control system comprises a remote control terminal, a field controller layer, an OPC data bus layer and a safety protection module, the remote control terminal is deployed on a mine comprehensive automation platform, is integrated with iFIX 5.8 configuration software, and is used for man-machine interaction and remote monitoring; the field controller layer is composed of a plurality of groups of PLCs (Programmable Logic Controller), is directly connected with main ventilator equipment and executes local logic control; the OPC data bus layer adopts a KepServer 5.8 OPC (OLE for Process Control) server; through combination of the PLC and the iFIX 5.8 configuration software, one-key start and stop and remote centralized control of the main ventilator are achieved, traditional manual operation is replaced, intelligent construction of a mine is promoted, the fixed post manual duty demand is eliminated, the labor cost is reduced, and meanwhile the emergency response efficiency is improved through remote real-time monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of mine control, and in particular to a remote control system applied to main ventilation of a mine. Background Art

[0002] In the field of mine safety production, the main ventilation fan is the core equipment for ensuring underground air quality. Its control stability and automation level are crucial. In the existing technology, at least two MAF-3300 / 1850-1G mine axial flow fans are generally installed. They use ordinary PLCs as controllers and are equipped with graphic operation terminals for local human-computer interaction. Although this system can ensure the safe operation of the fans, it faces the following drawbacks when faced with the demand for intelligent construction: Control limitations: It only supports local on-site control and cannot achieve remote centralized monitoring, making it difficult to meet the integration requirements of the mine's comprehensive automation platform; Dependence on manual intervention: Equipment startup, shutdown, and status switching require on-site manual operation, resulting in high costs for fixed personnel and delayed emergency response. Low data exchange efficiency: Lack of standardized data bus and communication protocols prevents on-site PLC data from being synchronized to remote terminals in real time, making it difficult to achieve dynamic analysis and early warning of ventilation status; Therefore, the present invention proposes a remote control system applied to mine main ventilation to solve the problems existing in the prior art. Summary of the Invention

[0003] In response to the above problems, the present invention proposes a remote control system for mine main ventilation. The remote control system for mine main ventilation realizes one-button start and stop and remote centralized control of the main ventilation fan through a combination of a PLC controller and iFIX 5.8 configuration software, replacing traditional manual operation, promoting the intelligent construction of mines, eliminating the need for manual duty at fixed posts, reducing labor costs, and improving emergency response efficiency through remote real-time monitoring.

[0004] To achieve the objectives of the present invention, the present invention is implemented through the following technical solutions: a remote control system for mine main ventilation, comprising a remote control terminal, a field controller layer, an OPC data bus layer, and a security protection module. The remote control terminal is deployed on a comprehensive mine automation platform and integrates iFIX 5.8 configuration software for human-computer interaction and remote monitoring. The field controller layer is composed of several groups of PLC controllers, which are directly connected to the main ventilation equipment to perform local logic control. The OPC data bus layer uses the KepServer5.8 OPC server to establish an industrial Ethernet communication link between the PLC controller and the remote control terminal; the safety protection module is built into the PLC controller and includes hardware-level protection logic for fan overload, voltage abnormality, high and low oil pressure, temperature and vibration exceeding the limit.

[0005] A further improvement is that the OPC data bus layer uses the TCP / IP protocol to construct industrial Ethernet, with a communication bandwidth of ≥100Mbps and a data transmission delay of ≤50ms.

[0006] A further improvement is that the industrial Ethernet adopts a ring topology, key nodes are equipped with optical fiber redundant links, and the network interruption self-recovery time is ≤30s.

[0007] A further improvement is that the OPC data bus layer supports extended access to other automation sub-projects and realizes data interaction with the mine compressed air, drainage, power supply and transportation systems through the OPC UA protocol.

[0008] A further improvement is that the PLC controller at the field controller layer integrates a one-button start and stop logic program for the main fan, and executes the fan start and stop operation by sending a trigger instruction through the remote control terminal.

[0009] Further improvements are as follows: the iFIX 5.8 configuration screen of the remote control terminal includes a real-time display module for fan operating parameters, a fault warning module and a historical data query module, and also includes a three-dimensional visual monitoring interface that displays a three-dimensional dynamic model of the fan blade angle, voltage and current values, wind pressure values, temperature values ​​and vibration values ​​in real time.

[0010] Further improvements are: the remote control terminal has a monthly switching control function, synchronizes the operating time data of at least two main fans through the OPC data bus layer, automatically generates switching instructions and executes: load balancing calculation before switching, smooth transition of fan speed during switching, and automatic calibration of parameters after switching.

[0011] Further improvements are: the remote control terminal and the on-site controller layer cooperate with the security protection module to build an unmanned fixed-post function, which is achieved through the following conditions: the threshold of the fan operating parameters is preset; abnormal data triggers a three-level alarm mechanism: pop-up prompts, SMS notifications, and platform-linked shutdowns; the historical data storage period is ≥12 months, supporting fault tracing analysis.

[0012] A further improvement is that the safety protection module includes a sensor group and an analysis unit, the sensor group includes at least a wind pressure sensor, an air volume sensor, a motor temperature sensor and a current and voltage sensor, and the analysis unit is used to analyze the data of the sensor group, obtain the fan operation status data and transmit it to the PLC controller.

[0013] A further improvement is that the remote control terminal is provided with hierarchical authority management, including: Operator authority: limited to parameter monitoring and one-button start and stop; Engineer authority: supports logic program modification and protection threshold adjustment; Auditor authority: All operation logs and alarm records can be traced.

[0014] The beneficial effects of the present invention are: 1. The present invention realizes one-button start and stop and remote centralized control of the main ventilation fan through the combination of PLC controller and iFIX 5.8 configuration software, replacing traditional manual operation, promoting the intelligent construction of mines, eliminating the need for manual duty at fixed posts, reducing labor costs, and improving emergency response efficiency through remote real-time monitoring.

[0015] 2. The present invention uses KepServer5.8 OPC server TCP / IP protocol to build industrial Ethernet and form a standardized data interaction channel, which is convenient for integration with other sub-projects of the mine comprehensive automation platform to form a unified monitoring system.

[0016] 3. The present invention establishes hardware-level protection logic and a three-level alarm mechanism including fan overload, voltage anomaly, and temperature overlimit, to achieve dynamic monitoring and automatic protection of the fan's operating status and ensure underground ventilation safety.

[0017] 4. The remote control terminal of the present invention supports historical data query and parameter data analysis, provides data support for equipment maintenance, and reduces the workload of on-site inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a composition diagram of the present invention. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] Example 1 according to Figure 1 As shown, this embodiment proposes a remote control system for mine main ventilation, including a remote control terminal, a field controller layer, an OPC data bus layer, and a security protection module. The remote control terminal is deployed on the mine integrated automation platform and integrates iFIX 5.8 configuration software for human-computer interaction and remote monitoring. The field controller layer is composed of several groups of PLC controllers, which are directly connected to the main ventilation equipment to perform local logic control. The OPC data bus layer adopts KepServer5.8 OPC server to establish an industrial Ethernet communication link between the PLC controller and the remote control terminal; the safety protection module is built-in the PLC controller and contains hardware-level protection logic of fan overload, voltage anomaly, temperature overrun, vibration overrun and low oil pressure.

[0021] The OPC data bus layer adopts TCP / IP protocol to build an industrial Ethernet with a communication bandwidth of ≥100 Mbps and a data transmission delay of ≤50 ms. The industrial Ethernet adopts a ring topology structure, and the key nodes are configured with optical fiber redundant links, and the network interruption self-recovery time is ≤30 s. The OPC data bus layer supports extension to access other automation sub-projects, and realizes data interaction with mine air supply, drainage, power supply and transportation systems through OPC UA protocol.

[0022] TCP / IP protocol is adopted to build an industrial Ethernet with a communication bandwidth of ≥100 Mbps and a data transmission delay of ≤50 ms. The 100 Mbps bandwidth can simultaneously transmit multiple real-time data (such as air pressure, vibration, temperature, etc.), meeting the real-time monitoring requirements under complex mine conditions; the low delay of 50 ms ensures that the remote control command (such as “one-key start-stop”) can be immediately issued to the field PLC, avoiding the risk of equipment control caused by communication lag.

[0023] The industrial Ethernet adopts a ring topology structure, and the key nodes are configured with optical fiber redundant links, and the network interruption self-recovery time is ≤30 s. When a single node in the ring network fails, data can be transmitted around other paths, and with the optical fiber redundant link, the interruption of a single link does not affect the overall communication; the communication link is automatically rebuilt within 30 seconds, which significantly improves the continuous operation ability of the mine ventilation system compared with the traditional star network (which needs minutes to recover).

[0024] Through the OPC UA protocol, extension to access other automation sub-projects (such as air supply, drainage, power supply, and transportation systems) is supported. The OPC UA protocol breaks the traditional “data island” of mine systems, realizes data interaction between the main fan and other subsystems (such as linkage control of drainage pump start-stop), and when new equipment or subsystems are added, the existing network architecture does not need to be modified, and the platform can be directly accessed through the OPC UA interface, reducing the cost of later upgrades.

[0025] The above design solves the pain points of traditional mine ventilation control systems such as high data delay, poor reliability, and weak scalability through high-speed communication, redundant network, and standard protocol technology, and provides a highly available, easily expandable, safe and controllable infrastructure for mine intelligent construction.

[0026] The PLC controller at the field controller layer integrates the main fan's one-button start / stop logic program, executing fan start / stop operations via trigger commands sent from the remote control terminal. The remote control terminal's iFIX 5.8 configuration screen includes a real-time display module for fan operating parameters, a fault warning module, and a historical data query module. It also includes a 3D visual monitoring interface that displays a 3D dynamic model of fan blade angle, bearing temperature, and vibration amplitude in real time. The remote control terminal features monthly switching control, synchronizing operating time data of at least two main fans via the OPC data bus layer. It automatically generates and executes switching commands: load balancing calculations before switching, smooth fan speed transitions during switching, and automatic parameter calibration after switching. The remote control terminal and field controller layer collaborate with the security protection module to implement a fixed-position unmanned operation function, achieved through the following conditions: preset thresholds for fan operating parameters; abnormal data triggering a three-level alarm mechanism: pop-up prompts, SMS notifications, and platform-linked shutdowns; and historical data storage for 12 months or longer, supporting fault tracing and analysis.

[0027] The one-button start and stop logic integrated in the PLC is combined with the 3D visualization interface of iFIX 5.8, allowing operators to remotely monitor core parameters such as fan blade angle, voltage and current values, wind pressure values, temperature values, and vibration values ​​through dynamic models. Combined with fault warning and historical data tracing functions, equipment maintenance is transformed from "passive repair" to "active prevention". The monthly switching control function ensures the stability of the coordinated operation of multiple fans through load balancing calculation and speed smooth transition algorithm, thereby extending the life of the equipment.

[0028] Unmanned operation and a closed-loop safety system: A three-level alarm mechanism (pop-up, SMS, and shutdown) based on preset thresholds establishes a complete safety chain from monitoring to response. Combined with 12 months or more of historical data storage, it provides data support for root cause analysis. The dual security of a redundant fiber optic network and hardware-level safety protection logic ensures that the system maintains 99.9% operational reliability even in unmanned scenarios, driving the mine's transformation towards a "less-manned, more intelligent" operation.

[0029] The safety protection module includes a sensor group and an analog quantity acquisition and analysis unit. The sensor group includes at least motor temperature and fan temperature sensors, a pressure sensor, and a vibration sensor. The analog quantity acquisition includes wind pressure, blade angle, voltage and current, cooling water flow, etc. The analysis unit is used to analyze the data of the sensor group, obtain the fan operation status data and transmit it to the PLC controller.

[0030] The remote control terminal is provided with hierarchical authority management, including: Operator authority: limited to parameter monitoring and one-button start and stop; Engineer authority: supports logic program modification and protection threshold adjustment; Auditor authority: All operation logs and alarm records can be traced.

[0031] The above-mentioned hierarchical authority management mechanism realizes the in-depth application of the "principle of least privilege" in mine control scenarios through the separation of powers among operators, engineers, and auditors: operators can only execute standardized start-stop processes to avoid accidentally touching key parameters; engineers' authority is isolated from the production environment and requires logical debugging through independent channels to prevent accidental tampering with the production system; auditors' authority is independent of the control layer, and the full life cycle management of operational behavior is achieved through full log tracing. The three work together to build a triple security barrier of "access isolation-operation error prevention-behavior audit", which significantly improves the compliance and risk resistance of mine automation systems.

[0032] Example 2 according to Figure 1 As shown, this embodiment proposes a remote control system for mine main ventilation. Based on a comprehensive mine automation platform, it includes 16 automation control sub-projects, one of which is a remote control terminal for main ventilation fans. The platform uses iFIX 5.8 programming software, the KepSvrver5.8 OPC data bus server, and industrial Ethernet communications to read and send data from the fan field controller (S7-300 PLC), enabling remote online monitoring and centralized control of the main ventilation fans. By integrating 16 subsystems through the mine's comprehensive automation platform, with the S7-300 PLC as the core field control unit, combined with iFIX 5.8 visual monitoring and KepServer5.8 OPC data bus, an integrated "perception-transmission-control-management" architecture was constructed: Industrial Ethernet realizes millisecond-level data interaction, supporting remote terminals to monitor real-time and one-button start and stop of parameters such as fan operating status and blade angle; the OPC bus breaks down data silos and reserves standardized interfaces for subsequent access to subsystems such as drainage and power supply; the S7-300 PLC's built-in hardware protection logic and three-level alarm mechanism form a double security barrier. While ensuring unmanned security, it realizes full-process audit of operating behavior through hierarchical authority management, providing a scalable and highly reliable underlying control infrastructure for the intelligent transformation of mines.

[0033] Using a Siemens S7-300 PLC for control programming and iFIX 5.8 for configuration, Ethernet communication was established with the on-site PLC via the KepSvrver5.8 bus server. This renovation improved the automated control of the mine's main ventilation fan, enabling remote centralized control of the fan, one-touch start and stop, and unmanned station operations. The mine's integrated automation platform now allows operators to remotely control the fan's monthly switching schedule. This ensures safe and stable fan operation, laying the foundation for intelligent mine development.

[0034] The remote control system applied to the main ventilation of the mine realizes one-button start and stop and remote centralized control of the main ventilation fan through the combination of PLC controller and iFIX 5.8 configuration software, replacing traditional manual operation, promoting the intelligent construction of mines, eliminating the need for manual duty at fixed posts, reducing labor costs, and improving emergency response efficiency through remote real-time monitoring; and the present invention uses KepServer5.8 OPC server TCP / IP protocol to build industrial Ethernet, forming a standardized data interaction channel, which is convenient for integration with other sub-projects of the mine comprehensive automation platform to form a unified monitoring system; at the same time, the present invention establishes hardware-level protection logic and a three-level alarm mechanism including fan overload, voltage anomaly, high and low oil pressure, temperature and vibration exceeding the limit, to realize dynamic monitoring and automatic protection of the fan operation status, and ensure underground ventilation safety; in addition, the remote control terminal of the present invention supports historical data query and parameter data analysis, provides data support for equipment maintenance, and reduces the workload of on-site inspections.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote control system for mine main ventilation, comprising a remote control terminal, a field controller layer, an OPC data bus layer, and a safety protection module, characterized in that: The remote control terminal is deployed on the mine's integrated automation platform and integrates iFIX 5.8 configuration software for human-computer interaction and remote monitoring. The field controller layer consists of several groups of PLC controllers, which are directly connected to the main ventilation equipment to perform local logic control. The OPC data bus layer uses the KepServer5.8 OPC server to establish an industrial Ethernet communication link between the PLC controller and the remote control terminal; the safety protection module is built into the PLC controller and includes hardware-level protection logic for fan overload, voltage abnormality, high and low oil pressure, temperature and vibration exceeding the limit.

2. A remote control system for mine main ventilation according to claim 1, characterized in that: The OPC data bus layer uses TCP / IP protocol to build industrial Ethernet, with a communication bandwidth of ≥100Mbps and a data transmission delay of ≤50ms.

3. A remote control system for mine main ventilation according to claim 2, characterized in that: The industrial Ethernet adopts a ring topology structure, key nodes are equipped with optical fiber redundant links, and the network interruption self-recovery time is ≤30s.

4. A remote control system for mine main ventilation according to claim 3, characterized in that: The OPC data bus layer supports extended access to other automation sub-projects and realizes data interaction with the mine compressed air, drainage, power supply, and transportation systems through the OPC UA protocol.

5. The remote control system for mine main ventilation according to claim 1, characterized in that: The PLC controller at the field controller layer integrates the one-button start and stop logic program of the main fan, and executes the fan start and stop operation by sending trigger instructions through the remote control terminal.

6. A remote control system for mine main ventilation according to claim 5, characterized in that: The iFIX 5.8 configuration screen of the remote control terminal includes a real-time display module for fan operating parameters, a fault warning module and a historical data query module. It also includes a three-dimensional visual monitoring interface that displays a three-dimensional dynamic model of the fan blade angle, voltage and current values, wind pressure values, temperature values ​​and vibration values ​​in real time.

7. A remote control system for mine main ventilation according to claim 6, characterized in that: The remote control terminal has a monthly switching control function, which synchronizes the operating time data of at least two main fans through the OPC data bus layer, automatically generates and executes switching instructions: load balancing calculation before switching, smooth transition of fan speed during switching, and automatic calibration of parameters after switching.

8. A remote control system for mine main ventilation according to claim 7, characterized in that: The remote control terminal and the on-site controller layer cooperate with the security protection module to build an unmanned fixed-post function, which is achieved through the following conditions: preset thresholds for wind turbine operating parameters; abnormal data triggers a three-level alarm mechanism: pop-up prompts, SMS notifications, and platform-linked shutdowns; historical data storage period ≥ 12 months, supporting fault tracing analysis.

9. The remote control system for mine main ventilation according to claim 1, characterized in that: The safety protection module includes a sensor group and an analog quantity acquisition and analysis unit. The sensor group includes at least motor temperature and fan temperature sensors, a pressure sensor, and a vibration sensor. The analog quantity acquisition includes wind pressure, blade angle, voltage and current, and cooling water flow. The analysis unit is used to analyze the data of the sensor group, obtain the fan operation status data and transmit it to the PLC controller.

10. The remote control system for mine main ventilation according to claim 1, characterized in that: The remote control terminal is provided with hierarchical authority management, including: Operator authority: limited to parameter monitoring and one-button start and stop; Engineer authority: supports logic program modification and protection threshold adjustment; Auditor authority: All operation logs and alarm records can be traced.

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