Tropical underground mine ventilation control system
By collecting and analyzing environmental data in real time in the mine, calculating comfort and efficiency indices, and dynamically adjusting the output power of the fans, the problems of inflexible control and insufficient monitoring in traditional mine ventilation systems have been solved, achieving efficient and precise ventilation control.
Patent Information
- Application Number
- CN202512024450.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-17
AI Technical Summary
Traditional mine ventilation control systems are difficult to adjust flexibly according to the actual underground environment and needs, resulting in poor ventilation effects. In some areas, there may be insufficient or excessive ventilation. At the same time, there is a lack of effective monitoring and evaluation methods, making it impossible to grasp the underground ventilation status and the physical comfort of the workers in real time.
It employs a data acquisition unit, a comfort assessment unit, an efficiency optimization unit, and a linkage control unit, combined with a virtual monitoring unit and an anomaly alarm unit. It collects environmental and efficiency data in real time through a sensor array, calculates the comfort assessment index and efficiency optimization index, dynamically adjusts the fan output power, and monitors the fan status in real time based on a three-dimensional dynamic model.
It enables precise monitoring and flexible control of underground ventilation, improves the comfort of staff, avoids problems of insufficient or excessive ventilation, reduces operating costs, extends the service life of fans, and provides intuitive control support.
Smart Images
Figure CN121539335A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ventilation control technology, and more particularly to a ventilation control system for tropical underground mines. Background Technology
[0002] As the core location for underground resource extraction, mines have extremely complex and harsh environmental conditions, especially those located in tropical monsoon climate zones. The high average annual temperature and high humidity in the underground working environment pose serious challenges to the comfort and work efficiency of mine workers. Mine ventilation systems, as key facilities for improving the underground working environment, not only affect air quality but also directly impact mine safety and the physical and mental health of workers. An efficient and stable mine ventilation system can effectively remove harmful gases and dust from the mine, regulate temperature and humidity, and create a relatively comfortable working environment for workers.
[0003] However, traditional mine ventilation control systems often rely on fans with fixed airflow and simple manual damper adjustments, making it difficult to flexibly adjust according to the actual underground working environment and needs. This results in poor ventilation, with some areas potentially experiencing insufficient or excessive ventilation. Secondly, traditional ventilation control systems lack effective monitoring and evaluation methods, making it impossible to monitor underground ventilation conditions and worker comfort in real time, and hindering the timely detection and resolution of ventilation problems.
[0004] To address the aforementioned technical deficiencies, a solution is proposed. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of traditional mine ventilation control systems, which often rely on fans with fixed airflow and simple manual damper adjustments. These systems are difficult to adjust flexibly according to the actual underground working environment and needs, resulting in poor ventilation and potential under- or over-ventilation in certain areas. Furthermore, traditional ventilation control systems lack effective monitoring and evaluation methods, making it impossible to monitor underground ventilation conditions and worker comfort in real time.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a ventilation control system for tropical underground mines, comprising a data acquisition unit, a comfort assessment unit, an efficiency optimization unit, and a linkage control unit; The data acquisition unit is used to collect environmental data and performance data in real time through sensor arrays and mine database, and send the environmental data to the comfort assessment unit and the performance data to the performance optimization unit. The comfort assessment unit is used to receive environmental data, perform analysis and calculation, and derive the comfort assessment index of mine workers, which reflects the impact of the mine environment on the workers' perceived comfort. The efficiency optimization unit is used to receive efficiency data, perform analysis and calculation, obtain the efficiency optimization index of the mine ventilation fan, compare and analyze it with the preset efficiency optimization threshold, and classify the mine ventilation fan into high-efficiency fans and low-efficiency fans. The linkage control unit is used to receive and analyze the comfort assessment index and the efficiency optimization index, and to regulate the output power of the high-efficiency fan.
[0007] Furthermore, the system also includes a virtual monitoring unit and an anomaly alarm unit. The virtual monitoring unit is based on a true 3D visualization ventilation simulation graphics management platform and is compatible with AutoCAD graphics data. It combines mine design and construction measurement engineering plan to establish a 3D dynamic model of the mine ventilation control system and monitor the operating efficiency and output power of the fans in real time.
[0008] Furthermore, the abnormal alarm unit is used to receive analysis information from the performance optimization unit. When an abnormal situation occurs, it sends an abnormal alarm message to the mine control terminal and generates a maintenance prompt signal.
[0009] Furthermore, the sensor array includes a temperature and humidity sensor, an air sensor, a current sensor, a voltage sensor, a speed sensor, and an airflow sensor.
[0010] Furthermore, the environmental data includes temperature, humidity, and dust content data of the mine's internal environment, and the performance data includes the output power, air volume, speed, service life, maintenance assessment value, and output power data of the high-efficiency fan before adjustment.
[0011] Furthermore, the calculation process for the comfort assessment index of mine workers is as follows: S11. Obtain and analyze data on temperature, humidity, and dust content in the mine's internal environment. S12. Calculate the comfort assessment index of mine workers according to the following formula. : in, The temperature of the internal environment of the mine. The preset human comfort baseline temperature, The humidity of the environment inside the mine. The preset humidity level is the baseline humidity for human comfort. This refers to the dust content in the air inside the mine. This refers to the preset standard dust content in the mine air. The preset humidity weighting coefficient, The higher the value of the comfort assessment index, the greater the impact of the mine environment on the physical comfort of the workers.
[0012] Furthermore, the calculation process for the efficiency optimization index of mine ventilation fans is as follows: S21. Obtain and analyze data on the output power, air volume, and speed of the mine ventilation fan. S22. Calculate the efficiency optimization index of the mine ventilation fan according to the following formula. : in, This represents the actual output power of the mine ventilation fan. The preset output power for the mine ventilation fan This represents the actual air output of the mine ventilation fan. This refers to the maximum air output of the mine ventilation fan at the preset output power. This represents the actual rotational speed of the mine ventilation fan. This refers to the maximum fan speed of the mine ventilation fan under the preset output power. The preset air volume weighting coefficient, This is a preset rotational speed weighting coefficient; S23. Obtain the preset performance optimization threshold. With the efficiency optimization index of mine ventilation fans Comparative analysis, when At that time, the fan will be classified as a high-efficiency fan and included in the fan control list; S24, when When the fan is identified as an inefficient fan, the abnormal alarm unit is triggered to send an abnormal alarm message to the mine control terminal and generate a maintenance prompt signal. S25. Obtain the service life, operation and maintenance assessment value, and output power data of the high-efficiency fan before adjustment, and perform analysis and calculation. The operation and maintenance assessment value is obtained by comprehensively evaluating the operation and maintenance information data of the high-efficiency fan and using a scale to obtain the operation and maintenance assessment value of the high-efficiency fan. S26. Calculate the regulating capacity index of a high-efficiency fan according to the following formula. : in, The actual service life of a high-efficiency fan. This is the operation and maintenance assessment value for high-efficiency wind turbines. This refers to the output power of the high-efficiency fan before adjustment. The preset standard service life of the fan. These are the preset standard operation and maintenance assessment values for wind turbines. The preset standard output power of the fan is used to reflect the adjustability of the high-efficiency fan. The larger the value of the adjustability index, the worse the adjustability of the high-efficiency fan. S27. Based on the magnitude of the regulation capacity index, sort the high-efficiency fans in the fan control list in ascending order.
[0013] Furthermore, the process of regulating the output power of a high-efficiency fan is as follows: S31. Analyze the receiving comfort assessment index and the efficiency optimization index; S32. Obtain the preset comfort assessment threshold. Comfort assessment index of mine workers Comparative analysis, when If the temperature is high, it indicates that the comfort level of the miners is low. The adjusted output power of the high-efficiency fan can then be calculated using the following formula. : in, This refers to the output power of the high-efficiency fan before adjustment. As a current comfort assessment index for mine workers, The preset comfort assessment threshold, The efficiency optimization index of the high-efficiency fan before adjustment. To optimize performance to the preset threshold, The preset power adjustment coefficient determines the output power of the high-efficiency fan after adjustment. If the output power exceeds the maximum capacity of the wind turbine, the output power shall be set at the maximum capacity to avoid overloading the wind turbine and causing safety hazards. S33. According to the order of high-efficiency fans in the fan control list, adjust the power of the high-efficiency fans that need to be adjusted in sequence until... In this case, there is no need to adjust the remaining high-efficiency fan power; S34, when If the output power of the mine ventilation fan is adjusted, it indicates that the comfort level of the workers inside the mine is high and there is no need to adjust the output power of the mine ventilation fan.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: This tropical underground mine ventilation control system comprehensively collects mine environment, fan efficiency, and control data through a data acquisition unit coupled with a multi-type sensor array for temperature, humidity, air quality, and rotational speed, as well as a mine database. This solves the problem of traditional systems having only one monitoring dimension. Simultaneously, the comfort assessment unit calculates a worker comfort assessment index based on scientific formulas, allowing for a quantitative assessment of perceived comfort and overcoming the limitation of traditional systems in real-time monitoring of worker comfort. Secondly, the efficiency optimization unit calculates an efficiency optimization index by analyzing fan output power and air volume, accurately classifying high-efficiency and low-efficiency fans. Combined with an anomaly alarm unit, it promptly issues alarms and maintenance prompts when fan efficiency fails to meet standards, effectively addressing the pain point of traditional systems' difficulty in detecting potential ventilation equipment hazards. Furthermore, the linkage control unit, based on the comfort assessment index and efficiency optimization... The index-based dynamic control of high-efficiency fan output power, combined with the adjustment capability index, comprehensively considers the adjustability of high-efficiency fans, prioritizing power control for those with strong adjustability. This results in a more sensitive response to power adjustments, quickly adjusting the output power according to the calculated changes, reducing control lag time, and more quickly meeting the comfort needs of workers, ensuring operational efficiency. Simultaneously, it avoids unnecessary power adjustments for fans with limited adjustability, thereby extending their effective lifespan, reducing operating costs, and preventing insufficient or excessive ventilation problems caused by traditional fixed-volume fans and manual adjustments. Furthermore, the virtual monitoring unit, based on a 3D dynamic model, provides real-time visualization of the fan's operating status, offering intuitive support for control and further enhancing the flexibility and accuracy of ventilation control. Attached Figure Description
[0015] Figure 1 A schematic diagram of the system flow of the present invention is shown. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Example: like Figure 1As shown, a ventilation control system for a tropical underground mine first uses a data acquisition unit to collect environmental and performance data in real time through a sensor array and a mine database. The environmental data is then sent to a comfort assessment unit, and the performance data is sent to a performance optimization unit. It should be noted that the sensor array includes temperature and humidity sensors, air sensors, current sensors, voltage sensors, speed sensors, and airflow sensors; the environmental data includes the temperature, humidity, and dust content of the mine's internal environment; and the performance data includes the output power, airflow, and rotational speed of the mine fans.
[0018] Then, the environmental data is received through the comfort assessment unit, analyzed and calculated to obtain the comfort assessment index of the mine workers, which is used to reflect the impact of the mine environment on the workers' perceived comfort. The calculation process for the comfort assessment index of mine workers is as follows: S11. Obtain and analyze data on temperature, humidity, and dust content in the mine's internal environment. S12. Calculate the comfort assessment index of mine workers according to the following formula. : in, The temperature of the internal environment of the mine. The preset human comfort baseline temperature, The humidity of the environment inside the mine. The preset humidity level is the baseline humidity for human comfort. This refers to the dust content in the air inside the mine. This refers to the preset standard dust content in the mine air. The preset humidity weighting coefficient, The value of the comfort assessment index is a preset weighting coefficient for dust content. A higher index indicates a greater impact of the mine environment on workers' perceived comfort, meaning workers in the mine will experience more discomfort. Conversely, a lower index indicates a smaller impact of the mine environment on workers' perceived comfort, meaning workers in the mine will experience more comfort. It should be noted that... and All of these were determined through extensive historical experimental data. The value range is (0,1) and The value range is (0,1), and .
[0019] Then, the efficiency optimization unit receives the efficiency data, performs analysis and calculation, obtains the efficiency optimization index of the mine ventilation fan, compares and analyzes it with the preset efficiency optimization threshold, and classifies the mine ventilation fan into high-efficiency fans and low-efficiency fans. The calculation process for the efficiency optimization index of mine ventilation fans is as follows: S21. Obtain and analyze data on the output power, air volume, and speed of the mine ventilation fan. S22. Calculate the efficiency optimization index of the mine ventilation fan according to the following formula. : in, This represents the actual output power of the mine ventilation fan. The preset output power for the mine ventilation fan This represents the actual air output of the mine ventilation fan. This refers to the maximum air output of the mine ventilation fan at the preset output power. This represents the actual rotational speed of the mine ventilation fan. This refers to the maximum fan speed of the mine ventilation fan under the preset output power. The preset air volume weighting coefficient, This is a preset rotational speed weighting coefficient; S23. Obtain the preset performance optimization threshold. With the efficiency optimization index of mine ventilation fans Comparative analysis, when At that time, the fan will be classified as a high-efficiency fan and included in the fan control list; S24, when When the fan is identified as an inefficient fan, the abnormal alarm unit is triggered to send an abnormal alarm message to the mine control terminal and generate a maintenance prompt signal, which is pushed to the staff terminal to prompt the fan to be maintained, adjusted or replaced. S25. Obtain the service life, operation and maintenance assessment value, and output power data of the high-efficiency fan before adjustment, and perform analysis and calculation. The operation and maintenance assessment value is obtained by comprehensively evaluating the operation and maintenance information data of the high-efficiency fan and using a scale. The larger the operation and maintenance assessment value, the more serious the fault condition of the high-efficiency fan and the higher the operation and maintenance frequency. S26. Calculate the regulating capacity index of a high-efficiency fan according to the following formula. : in, The actual service life of a high-efficiency fan. This is the operation and maintenance assessment value for high-efficiency wind turbines. This refers to the output power of the high-efficiency fan before adjustment. The preset standard service life of the fan. These are the preset standard operation and maintenance assessment values for wind turbines. The preset standard output power of the fan is used to reflect the adjustability of the high-efficiency fan. The larger the value of the adjustability index, the worse the adjustability of the high-efficiency fan. S27. Based on the magnitude of the regulation capacity index, sort the high-efficiency fans in the fan control list in ascending order.
[0020] Finally, the output power of the high-efficiency fan is adjusted by analyzing the comfort assessment index and efficiency optimization index received by the linkage control unit. The process of regulating the output power of a high-efficiency fan is as follows: S31. Analyze the receiving comfort assessment index and the efficiency optimization index; S32. Obtain the preset comfort assessment threshold. Comfort assessment index of mine workers Comparative analysis, when If the temperature is high, it indicates that the comfort level of the miners is low. The adjusted output power of the high-efficiency fan can then be calculated using the following formula. : in, This refers to the output power of the high-efficiency fan before adjustment. Assess the comfort level of current mine workers. The preset comfort assessment threshold, The efficiency optimization index of the high-efficiency fan before adjustment. To optimize performance to the preset threshold, The preset power adjustment coefficient (determined through extensive historical experimental data, with a value range of (0,1)) determines the output power of the high-efficiency fan after adjustment. If the output power exceeds the maximum capacity of the wind turbine, the output power shall be set at the maximum capacity to avoid overloading the wind turbine and causing safety hazards. S33. According to the order of high-efficiency fans in the fan control list, adjust the power of the high-efficiency fans that need to be adjusted in sequence until... In this case, there is no need to adjust the remaining power of the high-efficiency fan. Taking into account the adjustability of the high-efficiency fan, priority is given to power regulation of the high-efficiency fan with strong adjustability. The response to power adjustment is more sensitive, and the output adjustment can be completed quickly according to the calculated output power of the high-efficiency fan after adjustment. This can reduce the adjustment lag time, meet the comfort needs of the staff more quickly, and ensure work efficiency. At the same time, unnecessary power adjustment is avoided for fans with limited adjustability, thereby extending the effective service life of such fans and reducing operating costs. S34, when If the output power of the mine ventilation fan is high, it indicates that the comfort level of the workers in the mine is high, and there is no need to adjust the output power of the mine ventilation fan. Maintaining the current operating status ensures that the ventilation system is stable and energy-saving.
[0021] This invention comprehensively collects mine environment, fan efficiency, and control data through a data acquisition unit coupled with a multi-type sensor array for temperature, humidity, air quality, and rotational speed, as well as a mine database. This solves the problem of traditional systems having only one monitoring dimension. Simultaneously, the comfort assessment unit calculates a worker comfort assessment index based on scientific formulas, enabling quantitative assessment of perceived comfort and overcoming the limitation of traditional systems in real-time monitoring of worker comfort. Secondly, the efficiency optimization unit calculates an efficiency optimization index by analyzing fan output power and air volume, accurately classifying high-efficiency and low-efficiency fans. Combined with an anomaly alarm unit, it promptly issues alarms and maintenance prompts when fan efficiency fails to meet standards, effectively addressing the pain point of traditional systems' difficulty in detecting potential ventilation equipment hazards. Furthermore, the linkage control unit dynamically adjusts the output power of high-efficiency fans based on the comfort assessment index and efficiency optimization index, avoiding the problems of insufficient or excessive ventilation caused by traditional fixed-volume fans and manual adjustments. At the same time, the virtual monitoring unit visualizes the fan operating status in real-time based on a three-dimensional dynamic model, providing intuitive support for control and further improving the flexibility and accuracy of ventilation control.
[0022] The size of the interval and threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by those skilled in the art for each set of sample data; as long as it does not affect the ratio between the parameter and the quantized value.
[0023] The above formulas are all dimensionless calculations. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The preset parameters in the formulas are set by those skilled in the art according to the actual situation. The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A hot underground mine ventilation control system, characterized in that, The system comprises a data acquisition unit, a comfort evaluation unit, an efficiency optimization unit and a linkage control unit. The data acquisition unit is used for collecting environmental data and efficiency data in real time through a sensor array and a mine database, and sending the environmental data to the comfort evaluation unit and the efficiency data to the efficiency optimization unit. The comfort evaluation unit is used for receiving the environmental data, performing analysis and calculation, and obtaining a comfort evaluation index of mine workers, which is used for reflecting the influence of the mine environment on the body comfort of the workers. The efficiency optimization unit is used for receiving the efficiency data, performing analysis and calculation, and obtaining an efficiency optimization index of the mine fan, which is compared with a preset efficiency optimization threshold to divide the mine fan into a high-efficiency fan and a low-efficiency fan. The linkage control unit is used for receiving the comfort evaluation index and the efficiency optimization index for analysis, and regulating the output power of the high-efficiency fan.
2. A hot underground mine ventilation control system according to claim 1, characterised in that, The system further comprises a virtual monitoring unit and an abnormal alarm unit.
3. A hot underground mine ventilation control system according to claim 2, characterised in that, The virtual monitoring unit is based on a true three-dimensional visual ventilation simulation graphic management platform, is compatible with AutoCAD graphic data, combines mine design and construction measured engineering plan, and establishes a three-dimensional dynamic model of the mine ventilation control system to master the running efficiency and output power of the fan in real time.
4. A hot underground mine ventilation control system according to claim 1, characterised in that, The abnormal alarm unit is used for receiving analysis information of the efficiency optimization unit, sending abnormal alarm information to a mine control terminal when an abnormal condition occurs, and generating a maintenance prompt signal.
5. A hot underground mine ventilation control system according to claim 1, characterised in that, The sensor array comprises a temperature and humidity sensor, an air sensor, a current sensor, a voltage sensor, a rotating speed sensor and an air volume sensor.
6. A hot underground mine ventilation control system according to claim 1, characterised in that, The environmental data comprises temperature, humidity and air dust content data of the mine internal environment, and the efficiency data comprises output power, fan air volume, fan rotating speed data, service life, operation and maintenance evaluation value and output power data of the high-efficiency fan before adjustment of the mine fan. The comfort evaluation index of the mine workers is calculated as follows: S12, calculate the comfort evaluation index of the mine worker according to the following formula : wherein, is the temperature of the mine internal environment, is the preset human body comfort reference temperature, is the humidity of the mine internal environment, is the preset human body comfort reference humidity, is the air dust content of the mine internal environment, is the preset mine standard air dust content, is the preset humidity weight coefficient, is the preset dust content weight coefficient, the greater the value of the comfort evaluation index, the greater the influence of the mine environment on the body comfort of the worker.
7. A hot underground mine ventilation control system according to claim 1, characterised in that, S11, obtaining and analyzing and calculating temperature, humidity and air dust content data of the mine internal environment; The efficiency optimization index of the mine fan is calculated as follows: S22, calculate the performance optimization index of the mine fan according to the following formula : wherein, is the actual output power of the mine fan, is the preset output power of the mine fan, is the actual air output of the mine fan, is the maximum air output of the mine fan under the preset output power, is the actual fan speed of the mine fan, is the maximum fan speed of the mine fan under the preset output power, is the preset air output weight coefficient, is the preset speed weight coefficient; S23, acquire a preset performance optimization threshold , the performance optimization index of the mine fan , perform comparative analysis, when , the fan is determined as a high-performance fan and is included in the fan regulation list S24, when the fan is determined to be a low-efficiency fan, triggering the abnormal alarm unit to send an abnormal alarm information to the mine control terminal, and generating a maintenance prompt signal; S21, obtaining and analyzing and calculating output power, fan air volume and fan rotating speed data of the mine fan; S26, calculating the adjustment capacity index of the high-efficiency fan according to the following formula : wherein, is the actual service life of the high-efficiency fan, is the operation and maintenance evaluation value of the high-efficiency fan, is the output power of the high-efficiency fan before adjustment, is the preset standard service life of the fan, is the preset standard operation and maintenance evaluation value of the fan, is the preset standard output power of the fan, the adjustment capacity index is used to reflect the adjustable capacity of the high-efficiency fan, the greater the numerical value of the adjustment capacity index, the worse the adjustable capacity of the high-efficiency fan. S25, obtaining and analyzing and calculating service life, operation and maintenance evaluation value and output power data of the high-efficiency fan before adjustment, wherein the operation and maintenance evaluation value is obtained by comprehensively evaluating operation and maintenance information data of the high-efficiency fan through a scale; 8. A hot underground mine ventilation control system according to claim 1, characterised in that, S27, according to the numerical value of the adjustment capacity index, the high-efficiency fans are sorted in ascending order in a fan regulation list. The output power of the high-efficiency fan is regulated as follows: S31, receiving and analyzing the comfort evaluation index and the efficiency optimization index; S32, obtaining a preset comfort evaluation threshold , the comfort evaluation index of the mine workers , and performing comparative analysis, when , it indicates that the comfort of the mine workers is low, and the output power of the adjusted high-efficiency fan is calculated according to the following formula , wherein is the output power of the high-efficiency fan before adjustment, is the comfort evaluation index of the current mine workers, is the preset comfort evaluation threshold, is the efficiency optimization index of the high-efficiency fan before adjustment, is the preset efficiency optimization threshold, is the preset power adjustment coefficient, when the output power of the adjusted high-efficiency fan exceeds the maximum output power that the fan can bear, the output is performed according to the maximum output power, so as to avoid overloading of the fan and cause safety hazards. S33, according to the fan regulation list, the sorting result of the high-efficiency fan, in turn, the high-efficiency fan needs to adjust the output power, until If, then there is no need to adjust the remaining high-efficiency fan power; S34, when If yes, it indicates that the comfort level of the staff in the mine is high, and the output power of the mine fan does not need to be regulated.