CN114135328B - Intelligent anti-wind system and method for one-key mine fan - Google Patents
Intelligent anti-wind system and method for one-key mine fan Download PDFInfo
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- CN114135328B CN114135328B CN202111218257.0A CN202111218257A CN114135328B CN 114135328 B CN114135328 B CN 114135328B CN 202111218257 A CN202111218257 A CN 202111218257A CN 114135328 B CN114135328 B CN 114135328B
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- 238000009423 ventilation Methods 0.000 claims abstract description 62
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- 238000004088 simulation Methods 0.000 claims abstract description 36
- 238000004422 calculation algorithm Methods 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 15
- 230000008447 perception Effects 0.000 claims description 12
- 230000008054 signal transmission Effects 0.000 claims description 9
- 238000012549 training Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/81—Modelling or simulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides an intelligent anti-wind system of a one-key mine fan, which comprises a real-time simulation resolving and analyzing model of a mine ventilation system, a mine anti-wind analyzing and deciding system, a fire disaster identifying system, an alarm system and a mine anti-wind system control platform; the fire disaster recognition system is in signal connection with the real-time simulation resolving and analyzing model of the mine ventilation system, the real-time simulation resolving and analyzing model of the mine ventilation system is in signal connection with the mine anti-wind analysis and decision system, and the mine anti-wind analysis and decision system is in signal connection with the mine anti-wind system control platform. The invention also provides an intelligent one-key mine fan back-wind method, and the intelligent one-key mine fan back-wind system and method can realize full-mine back-wind, regional back-wind or local back-wind according to the fire place of alarm.
Description
Technical Field
The invention relates to the technical field of mine ventilation, in particular to an intelligent anti-wind system and method of a one-key mine fan.
Background
The safety regulations of metallic nonmetallic mines prescribe that the fans should take measures to reverse the mine wind flow within 10 min. In general, the fan is used for reversing wind, and three modes of reversing wind channel and reversing wind and no reversing wind are adopted. When the axial flow fan is used for reversing the air, the air quantity of the air reversely reaches more than 60% of the air quantity during normal operation. This is one of the wind flow control measures to prevent mine fire hazards.
When a fire disaster occurs underground, the mine anti-wind is used for controlling the development and the spread of the fire disaster, protecting underground operators from being hurt by toxic and harmful gases generated by the fire disaster, and the primary method is to control the ventilation wind flow of a fire area so that the ventilation wind flow can flow according to a reasonable wind flow route, thereby being beneficial to extinguishing the fire disaster and protecting the safety of the underground operators; conversely, if the wind flow cannot be controlled or is not reasonably controlled, more serious consequences may result.
When a fire disaster happens underground, a full-mine air-reversing mode, a regional air-reversing mode or a local air-reversing mode can be adopted according to the fire disaster place, namely, when the fire disaster happens near the wellhead of an air inlet well, the shaft of the air inlet well, a shaft bottom car park, a transportation main roadway (main air inlet roadway) and an air inlet stone door, the full-mine air-reversing mode is needed; when a fire disaster occurs in an air inlet main lane of a multi-air-shaft mine, an air inlet main lane of a certain wing of the mine and an air inlet main lane of a certain independent ventilation system, regional back air is required; local countermeasures are required when a fire occurs in an air intake roadway of a certain mining area or face.
At present, the fan anti-wind operation is performed under the on-site command of a master engineer, the fan operation is stopped firstly, then the reversing device is used for reversing the starting motor to realize anti-wind, and generally, according to the fire place of alarm, all-mine anti-wind, regional anti-wind or local anti-wind can be realized. In fact, regional or local leeward operation is complex and difficult, and a relatively reliable leeward scheme can be provided by analyzing and judging the result of real-time simulation and calculation of the mine ventilation system; if the simulation analysis of the ventilation network is carried out after the fire disaster occurs, the timeliness of the back wind is obviously affected, and the flow of fire smoke is not controlled rapidly.
Accordingly, improvements in the art are needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing an efficient intelligent anti-wind system and method for a one-key mine fan.
In order to solve the technical problems, the invention provides an intelligent anti-wind system of a one-key mine fan, which comprises a real-time simulation resolving and analyzing model of a mine ventilation system, a mine anti-wind analyzing and deciding system, a fire disaster identifying system, an alarm system and a mine anti-wind system control platform;
the fire disaster recognition system is in signal connection with the real-time simulation resolving and analyzing model of the mine ventilation system, the real-time simulation resolving and analyzing model of the mine ventilation system is in signal connection with the mine anti-wind analysis and decision system, and the mine anti-wind analysis and decision system is in signal connection with the mine anti-wind system control platform.
As an improvement on the intelligent air reversing system of the one-key mine fan, the invention comprises the following steps:
The fire disaster recognition system consists of a fire disaster intelligent recognition camera, a fire disaster intelligent perception algorithm model, a signal transmission system and the like, and can automatically perceive whether fire disaster happens or not; the intelligent fire disaster recognition camera is arranged in a roadway, acquires images and wind flow temperature and sends the images and the wind flow temperature to the intelligent fire disaster sensing algorithm model, the intelligent fire disaster sensing algorithm model judges whether fire disaster occurs or not according to the acquired images and the wind flow temperature change value, and when the intelligent fire disaster sensing algorithm model judges that the fire disaster occurs, the intelligent fire disaster recognition camera transmits fire disaster information to a mine anti-wind system control platform through the signal transmission system.
The invention also provides an intelligent anti-wind method of the one-key mine fan, which comprises the following steps:
Step 1: establishing a fire disaster identification system and an alarm system; acquiring fire detection data of a mine ventilation roadway in real time;
Step 2: establishing a real-time simulation resolving and analyzing model of the mine ventilation system by using mine ventilation network simulation computing software, and training an algorithm model by using historical fire detection data;
step 3: establishing a mine anti-wind analysis and decision system;
Step 4: constructing a mine anti-wind system control platform;
step 5: the mine ventilation system is used for simulating, calculating and analyzing the model in real time to predict the fire alarm condition, so that a fire alarm condition analysis result is obtained;
step 6: determining a reverse wind scheme by using a mine reverse wind analysis and decision system, and controlling the reverse wind of the fan according to the reverse wind scheme;
and 7, starting a corresponding fan to reversely reverse the wind by the control platform of the mine wind reversing system according to a wind reversing scheme.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
in step 1:
Arranging a fire intelligent recognition camera in the roadway, acquiring images and wind flow temperatures by the fire intelligent recognition camera, and sending the images and the wind flow temperatures to a fire intelligent perception algorithm model, wherein the fire intelligent perception algorithm model judges whether fire occurs or not according to the acquired images and wind flow temperature change values, and sends the fire intelligent perception algorithm model to a mine ventilation system real-time simulation calculation and analysis model as fire detection data through a signal transmission system;
The intelligent fire disaster recognition camera can monitor fire disaster warning conditions of main ventilation tunnels of mines.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
In step 2:
Establishing a real-time simulation resolving and analyzing model of the mine ventilation system by using mine ventilation network simulation computing software, and training an algorithm model by using historical fire detection data;
And (3) sending the historical fire detection data and the actual ventilation situation obtained in the step (1) to a real-time simulation resolving and analyzing model of the mine ventilation system for training, so that the wind flow direction of the mine ventilation system in the underground fire period judged by the real-time simulation resolving and analyzing model is consistent with the actual situation on site, and the subsequent determination of a back wind scheme is facilitated.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
In step 3:
According to the actual constitution of the mine ventilation system, an artificial intelligence technology and a method are applied to construct a mine wind flow parameter analysis and wind flow regulation decision system, so that the intelligent regulation of the mine ventilation system is realized; the mine wind flow parameter analysis and wind flow regulation decision system is used for sending a regulation command and regulating the operation condition parameters of the fan.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
in step 5:
And predicting the fire alarm situation by using a real-time simulation resolving and analyzing model of the mine ventilation system, thereby obtaining a fire alarm situation analyzing result.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
in step 6:
determining a reverse wind scheme by using a mine reverse wind analysis and decision system, and controlling the reverse wind of the fan according to the reverse wind scheme;
Transmitting the fire alarm analysis result to a back-wind analysis and decision system, and giving a back-wind scheme of full-mine back-wind or regional back-wind or local back-wind as a back-wind signal of intelligent analysis decision through intelligent analysis;
the mine anti-wind analysis and decision system can give an anti-wind scheme in real time according to the fire place; the mine anti-wind analysis and decision system intelligent analysis can obtain all-mine anti-wind, regional anti-wind or local anti-wind and other anti-wind schemes.
As an improvement on the intelligent air reversing method of the one-key mine fan, the invention has the following advantages:
In step 7:
the mine anti-wind system control platform starts a corresponding fan to reverse anti-wind according to an anti-wind scheme;
A fan anti-wind button and an anti-wind ending button can be arranged on a mine anti-wind system control platform and are respectively used for starting anti-wind and closing anti-wind; the number of the fan anti-wind keys and the number of the anti-wind ending keys are the same as the number of the fans and are in one-to-one correspondence, so that independent control is performed;
The method comprises the steps that a reverse wind scheme of a mine reverse wind analysis and decision system is transmitted to a mine reverse wind system control platform, a reverse wind starting key for implementing a reverse wind reversing fan is displayed on the control platform, and a commander starts the full mine reverse wind or regional reverse wind or local reverse wind fans in a one-key manner;
after the fan anti-wind button is started, the fan stops running firstly, then the fan is switched to a fan motor reversing running mode, the fan motor reverses running, and the wind flow direction starts to reverse;
after the button is started at the end of the back wind, the fan stops running firstly, then the operation is switched to a positive running mode of the fan motor, the fan motor runs in a positive rotation mode, and the wind flow direction starts to be in a positive direction.
The intelligent anti-wind system and the intelligent anti-wind method for the one-key mine fan have the technical advantages that:
The intelligent anti-wind system and the intelligent anti-wind method for the one-key mine fan can realize full-mine anti-wind, regional anti-wind or local anti-wind according to the fire disaster place with alarm. According to the invention, through establishing a real-time simulation resolving and analyzing model of the mine ventilation system, intelligent analysis is carried out to give out a full mine reverse wind, regional reverse wind or local reverse wind scheme, and the mine intelligent ventilation system is constructed, so that the operation of the mine ventilation system is intelligent, and the real-time intelligent regulation and control of the fan are realized.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
The embodiment 1 of the intelligent anti-wind system of the one-key mine fan comprises a real-time simulation resolving and analyzing model of a mine ventilation system, a mine anti-wind analyzing and deciding system, a fire disaster identifying system, an alarm system and a mine anti-wind system control platform;
the fire disaster recognition system is in signal connection with the real-time simulation resolving and analyzing model of the mine ventilation system, the real-time simulation resolving and analyzing model of the mine ventilation system is in signal connection with the mine anti-wind analysis and decision system, and the mine anti-wind analysis and decision system signal is in signal connection with the mine anti-wind system control platform;
The fire disaster recognition system consists of a fire disaster intelligent recognition camera, a fire disaster intelligent perception algorithm model, a signal transmission system and the like, and can automatically perceive whether fire disaster happens or not; the intelligent fire disaster recognition camera is arranged in a roadway, acquires images and wind flow temperature and sends the images and the wind flow temperature to the intelligent fire disaster sensing algorithm model, the intelligent fire disaster sensing algorithm model judges whether fire disaster occurs or not according to the acquired images and the wind flow temperature change value, and when the intelligent fire disaster sensing algorithm model judges that the fire disaster occurs, the intelligent fire disaster recognition camera transmits fire disaster information to a mine anti-wind system control platform through the signal transmission system.
An intelligent one-key mine fan back-wind method by using an intelligent one-key mine fan back-wind system comprises the following steps:
Step 1: establishing a fire disaster identification system and an alarm system; acquiring fire detection data of a mine ventilation roadway in real time;
Arranging a fire intelligent recognition camera in the roadway, acquiring images and wind flow temperature by the fire intelligent recognition camera, and sending the images and the wind flow temperature to a fire intelligent perception algorithm model, wherein the fire intelligent perception algorithm model judges whether fire occurs or not according to the acquired images and wind flow temperature change values, and the fire intelligent perception algorithm model is used as fire detection data and is sent to a mine ventilation system real-time simulation calculation and analysis model through a signal transmission system.
The intelligent fire identification camera can monitor fire alarms of main ventilation tunnels of mines, and monitor wind flow temperature and flame to judge whether fire occurs.
Step 2: establishing a real-time simulation resolving and analyzing model of the mine ventilation system by using mine ventilation network simulation computing software, and training an algorithm model by using historical fire detection data;
And (3) sending the historical fire detection data and the actual ventilation situation obtained in the step (1) to a real-time simulation resolving and analyzing model of the mine ventilation system for training, so that the wind flow direction of the mine ventilation system in the underground fire period judged by the real-time simulation resolving and analyzing model is consistent with the actual situation on site, and the subsequent determination of a back wind scheme is facilitated.
Step 3: establishing a mine anti-wind analysis and decision system;
According to the actual constitution of the mine ventilation system, an artificial intelligence technology and a method are applied to construct a mine wind flow parameter analysis and wind flow regulation decision system, so that the intelligent regulation of the mine ventilation system is realized; the mine wind flow parameter analysis and wind flow regulation decision system is used for sending a regulation command and regulating the operation condition parameters of the fan.
Step 4: constructing a mine anti-wind system control platform;
step 5: the mine ventilation system is used for simulating, calculating and analyzing the model in real time to predict the fire alarm condition, so that a fire alarm condition analysis result is obtained;
Inputting fire detection data monitored by the real-time monitoring system obtained in the step 1 into a real-time simulation resolving and analyzing model of a mine ventilation system, and predicting fire alarm conditions so as to obtain fire alarm condition analysis results;
step 6: determining a reverse wind scheme by using a mine reverse wind analysis and decision system, and controlling the reverse wind of the fan according to the reverse wind scheme;
Transmitting the fire alarm analysis result to a back-wind analysis and decision system, and giving a back-wind scheme of full-mine back-wind or regional back-wind or local back-wind as a back-wind signal of intelligent analysis decision through intelligent analysis;
the mine anti-wind analysis and decision system can give an anti-wind scheme in real time according to the fire place; the mine anti-wind analysis and decision system intelligent analysis can obtain all-mine anti-wind, regional anti-wind or local anti-wind and other anti-wind schemes;
the total mine induced wind is as follows: controlling all main fans of the mine to reverse wind;
Regional wind reversals are: according to the area where the fire disaster is and the influence condition thereof, starting a part of fans to reverse the reverse wind, and changing the wind flow direction of a certain area;
The local wind-back is as follows: according to the place where the fire disaster occurs, local wind reversing is implemented, the wind flow direction of a local ventilation network is changed, and fire smoke enters a return air system;
step 7, a control platform of the mine anti-wind system starts a corresponding fan to reverse anti-wind according to an anti-wind scheme;
A fan anti-wind button and an anti-wind ending button can be arranged on a mine anti-wind system control platform and are respectively used for starting anti-wind and closing anti-wind. The number of the fan anti-wind keys and the number of the anti-wind ending keys are the same as the number of the fans and are in one-to-one correspondence, so that independent control is performed.
The mine anti-wind analysis and decision system anti-wind scheme is transmitted to a mine anti-wind system control platform, an anti-wind start key for implementing the reverse anti-wind fan is displayed (shiny) on the control platform, and a commander starts the full mine anti-wind or regional anti-wind or local anti-wind fan by one key.
After the fan anti-wind button is started, the fan stops running firstly (preset stop time), then the fan is switched to a fan motor reversal running mode, the fan motor is reversed to run, and the wind flow direction starts to be reversed (opposite to the designed wind flow direction);
After the button is started at the end of the back wind, the fan stops running firstly (preset stop time), then the operation is switched to a positive running operation mode of the fan motor, the fan motor runs in a positive rotation mode, and the wind flow direction starts to be in a positive direction (consistent with the designed wind flow direction).
Finally, it should also be noted that the above list is merely a few specific embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (2)
1. The utility model provides a key mine fan intelligence anti-wind method, includes mine fan intelligence anti-wind system and mine fan intelligence anti-wind method, its characterized in that: the intelligent wind reversing method of the mine fan comprises the following steps of:
Step 1: establishing a fire disaster identification system and an alarm system; acquiring fire detection data of a mine ventilation roadway in real time;
Step 2: establishing a real-time simulation resolving and analyzing model of the mine ventilation system by using mine ventilation network simulation computing software, and training an algorithm model by using historical fire detection data;
step 3: establishing a mine anti-wind analysis and decision system;
Step 4: constructing a mine anti-wind system control platform;
step 5: the mine ventilation system is used for simulating, calculating and analyzing the model in real time to predict the fire alarm condition, so that a fire alarm condition analysis result is obtained;
step 6: determining a reverse wind scheme by using a mine reverse wind analysis and decision system, and controlling the reverse wind of the fan according to the reverse wind scheme;
step 7, a control platform of the mine anti-wind system starts a corresponding fan to reverse anti-wind according to an anti-wind scheme;
in step 1:
Arranging a fire intelligent recognition camera in the roadway, acquiring images and wind flow temperatures by the fire intelligent recognition camera, and sending the images and the wind flow temperatures to a fire intelligent perception algorithm model, wherein the fire intelligent perception algorithm model judges whether fire occurs or not according to the acquired images and wind flow temperature change values, and sends the fire intelligent perception algorithm model to a mine ventilation system real-time simulation calculation and analysis model as fire detection data through a signal transmission system;
The intelligent fire disaster identification camera can monitor fire disaster warning conditions of main ventilation tunnels of mines;
Establishing a real-time simulation resolving and analyzing model of the mine ventilation system by using mine ventilation network simulation computing software, and training an algorithm model by using historical fire detection data;
In step 2:
The historical fire detection data and the actual ventilation situation obtained in the step 1 are sent to a real-time simulation resolving and analyzing model of the mine ventilation system for training, so that the wind flow direction of the mine ventilation system in the underground fire period judged by the real-time simulation resolving and analyzing model is consistent with the actual situation of the site, and the subsequent determination of a reverse wind scheme is facilitated;
In step 3:
According to the actual constitution of the mine ventilation system, an artificial intelligence technology and a method are applied to construct a mine wind flow parameter analysis and wind flow regulation decision system, so that the intelligent regulation of the mine ventilation system is realized; the mine wind flow parameter analysis and wind flow regulation decision system is used for sending a regulation command and regulating the operation condition parameters of the fan;
in step 5:
the mine ventilation system is used for simulating, calculating and analyzing the model in real time to predict the fire alarm condition, so that a fire alarm condition analysis result is obtained;
in step 6:
determining a reverse wind scheme by using a mine reverse wind analysis and decision system, and controlling the reverse wind of the fan according to the reverse wind scheme;
Transmitting the fire alarm analysis result to a back-wind analysis and decision system, and giving a back-wind scheme of full-mine back-wind or regional back-wind or local back-wind as a back-wind signal of intelligent analysis decision through intelligent analysis;
The mine anti-wind analysis and decision system can give an anti-wind scheme in real time according to the fire place; the mine upwind analysis and decision system intelligent analysis can obtain all-mine upwind, regional upwind or local upwind schemes;
the mine fan intelligent anti-wind system comprises a mine ventilation system real-time simulation resolving and analyzing model, a mine anti-wind analyzing and deciding system, a fire disaster identifying system, an alarm system and a mine anti-wind system control platform;
The fire disaster recognition system is in signal connection with the real-time simulation resolving and analyzing model of the mine ventilation system, the real-time simulation resolving and analyzing model of the mine ventilation system is in signal connection with the mine anti-wind analysis and decision system, and the mine anti-wind analysis and decision system is in signal connection with the mine anti-wind system control platform;
The fire disaster recognition system consists of a fire disaster intelligent recognition camera, a fire disaster intelligent perception algorithm model and a signal transmission system, and can automatically perceive whether fire disaster happens or not; the intelligent fire disaster recognition camera is arranged in a roadway, acquires images and wind flow temperature and sends the images and the wind flow temperature to the intelligent fire disaster sensing algorithm model, the intelligent fire disaster sensing algorithm model judges whether fire disaster occurs or not according to the acquired images and the wind flow temperature change value, and when the intelligent fire disaster sensing algorithm model judges that the fire disaster occurs, the intelligent fire disaster recognition camera transmits fire disaster information to a mine anti-wind system control platform through the signal transmission system.
2. The intelligent one-key mine fan back-wind method of claim 1, wherein the method comprises the following steps:
In step 7:
the mine anti-wind system control platform starts a corresponding fan to reverse anti-wind according to an anti-wind scheme;
A fan anti-wind button and an anti-wind ending button can be arranged on a mine anti-wind system control platform and are respectively used for starting anti-wind and closing anti-wind; the number of the fan anti-wind keys and the number of the anti-wind ending keys are the same as the number of the fans and are in one-to-one correspondence, so that independent control is performed;
The method comprises the steps that a reverse wind scheme of a mine reverse wind analysis and decision system is transmitted to a mine reverse wind system control platform, a reverse wind starting key for implementing a reverse wind reversing fan is displayed on the control platform, and a commander starts the full mine reverse wind or regional reverse wind or local reverse wind fans in a one-key manner;
after the fan anti-wind button is started, the fan stops running firstly, then the fan is switched to a fan motor reversing running mode, the fan motor reverses running, and the wind flow direction starts to reverse;
after the button is started at the end of the back wind, the fan stops running firstly, then the operation is switched to a positive running mode of the fan motor, the fan motor runs in a positive rotation mode, and the wind flow direction starts to be in a positive direction.
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113299035A (en) * | 2021-05-21 | 2021-08-24 | 上海电机学院 | Fire identification method and system based on artificial intelligence and binocular vision |
Non-Patent Citations (2)
| Title |
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| 周福宝.矿井智能通风原理、关键技术及其初步实现.煤炭学报.2020,第45卷(第6期),第2225－2235页. * |
| 矿井智能通风原理、关键技术及其初步实现;周福宝;煤炭学报;第45卷(第6期);第2225－2235页 * |
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