A control method for a tunnel internal jet fan

Abstract

The embodiment of the application provides a control method of a tunnel jet fan. The tunnel jet fan comprises a base, a tray, a jet fan body, a smoke position acquisition device and a plurality of smoke speed acquisition devices; the tray is rotatably arranged on the base, the tray is provided with a first driving element, the jet fan body is hingedly connected to the tray and is drivingly connected with the first driving element; the base is provided with a second driving element, the second driving element is drivingly connected with the tray; the smoke position acquisition device is arranged on the base, the plurality of smoke speed acquisition devices are arranged in the tunnel at intervals along the length direction of the tunnel, the base is provided with a controller, and the controller is electrically connected with the smoke position acquisition device, the smoke speed acquisition device, the first driving element, the second driving element and the jet fan body respectively. The technical scheme of the embodiment of the application can enable the jet fan to realize smoke control under different fire conditions and guarantee the smoke control effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan, in particular to a control method of jet fan in tunnel. BACKGROUND

[0002] In recent years, China's economy has developed rapidly, urbanization has accelerated, and traffic pressure has also increased, and tunnel construction has increased year by year. The tunnel is a narrow space, and the safety exit is less. Once a fire accident occurs, the high-temperature smoke is difficult to effectively discharge, which will pose a serious threat to personnel life and tunnel structure. In the current technical scheme, the jet fan is installed in the form of being fixed in the tunnel, which only supports up and down shaking and forward and reverse rotation, etc. However, when a fire occurs in the tunnel, the position of the smoke is uncertain, and the direction of the smoke is uncertain. The fixed jet fan cannot control the smoke in a targeted manner. Therefore, how to make the jet fan realize smoke control under different fire conditions and ensure the smoke control effect has become a technical problem to be solved. SUMMARY

[0003] The embodiments of the present application provide a control method of jet fan in tunnel, so that the jet fan can realize smoke control under different fire conditions and ensure the smoke control effect at least to some extent.

[0004] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0005] According to one aspect of the embodiments of the present application, a jet fan in tunnel is provided, comprising a base, a tray, a jet fan body, a smoke position acquisition device and a plurality of smoke speed acquisition devices;

[0006] The tray is rotatably arranged on the base, and the tray is provided with a first driving member. The jet fan body is hinged to the tray and is drivingly connected with the first driving member. The first driving member can drive the air outlet of the jet fan body to reciprocate in the vertical direction. The base is provided with a second driving member. The second driving member is drivingly connected with the tray. The second driving member can drive the tray to rotate around the vertical direction as the axis.

[0007] The flue gas location acquisition device is mounted on the base, and several flue gas velocity acquisition devices are spaced apart along the length of the tunnel within the tunnel. A controller is mounted on the base, and the controller is electrically connected to the flue gas location acquisition device, the flue gas velocity acquisition device, the first drive unit, the second drive unit, and the jet fan body, respectively. The controller can control the first drive unit, the second drive unit, and the jet fan body to operate based on the flue gas location acquired by the flue gas location acquisition device and the flue gas spread velocity acquired by the flue gas velocity acquisition device, so as to perform flue gas control.

[0008] In one embodiment of this application, a moving mechanism is provided on the base, the moving mechanism is electrically connected to the controller, and the moving mechanism is used to drive the base to move.

[0009] In one embodiment of this application, the moving mechanism is a tracked chassis.

[0010] According to one aspect of the embodiments of this application, a control method for a jet fan in a tunnel as described in the foregoing embodiments is provided, the method comprising:

[0011] The smoke location acquisition device acquires a first image inside the tunnel, performs image recognition on the first image to determine the area information of the smoke within the tunnel cross section, and determines the height information of the smoke based on the area information.

[0012] The smoke velocity acquisition device acquires a second image inside the tunnel, performs image recognition on the second image to determine whether there is smoke in the second image, and if so, records the time information of smoke detection.

[0013] The controller determines the upward tilt angle of the jet fan body based on the height information determined by the flue gas position acquisition device, and determines the spread speed of the flue gas based on the position information of the two flue gas velocity acquisition devices that have detected the flue gas and the time information of their respective flue gas detection; based on the spread speed, the controller determines the horizontal rotation speed of the jet fan body and the outlet wind speed.

[0014] The controller controls the first drive component to operate according to the upward tilt angle, controls the second drive component to operate according to the horizontal rotation speed, and controls the main body of the jet fan to operate according to the outlet wind speed, so as to achieve flue gas control.

[0015] In one embodiment of this application, the controller, based on a fuzzy logic algorithm, determines the upward tilt angle of the jet fan according to the height information determined by the flue gas position acquisition device, and determines the horizontal rotation speed of the jet fan body and the outlet wind speed according to the spread speed.

[0016] In one embodiment of this application, the controller receives a remote control command and controls the moving mechanism to operate according to the remote control command, to the target position.

[0017] In one embodiment of this application, the controller controls the moving mechanism to operate based on the position information of the first flue gas velocity acquisition device that identifies the flue gas, so as to move to the target position.

[0018] In some embodiments of this application, the tray is rotatably mounted on the base, and the first driving member can drive the air outlet of the jet fan body to reciprocate in the vertical direction. The second driving member can drive the tray to rotate. The controller can control the first driving member, the second driving member, and the jet fan body to work according to the smoke position collected by the smoke position collection device and the smoke spread speed collected by the smoke velocity collection device. Thus, the blowing angle and wind speed of the jet fan can be adjusted accordingly for different fire conditions, thereby achieving precise control of the smoke and ensuring the smoke control effect.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0021] Figure 1 A schematic diagram of a jet fan in a tunnel according to an embodiment of this application is shown.

[0022] Figure 2 A schematic diagram of the zoning of a tunnel cross section according to an embodiment of this application is shown.

[0023] Figure label:

[0024] Base 100; tray 200; first drive component 210; jet fan body 300; flue gas position acquisition device 400; moving mechanism 110. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0029] Figure 1 A schematic diagram of a tunnel jet fan according to an embodiment of this application is shown. (Refer to...) Figure 1 As shown, the jet fan includes a base 100, a tray 200, a jet fan body 300, a flue gas position acquisition device 400, and several flue gas velocity acquisition devices (not shown in the figure).

[0030] The tray 200 is rotatably mounted on the base 100. The tray 200 can be of any shape, such as square or circular, and can rotate 360° on the base 100. The jet fan body 300 is hinged to the tray 200. A first driving member 210 is mounted on the tray 200 and is driven by the jet fan body 300. The first driving member 210 can drive the air outlet of the jet fan body 300 to reciprocate vertically. Therefore, the upward angle of the air outlet can be adjusted according to the height of different flue gas flows to ensure effective flue gas control. Specifically, a bracket (not shown in the figure) is provided on the tray 200, and the jet fan body 300 is hinged to the bracket at its middle position. One end of the first drive member 210 is connected to the tray 200, and the other end is connected to the end of the jet fan body 300 near the air outlet. Thus, the first drive member 210 can adjust the upward angle of the air outlet of the jet fan body 300 by raising or lowering the end of the jet fan body 300. In one example, the first drive member 210 can be an air rod.

[0031] A second driving component (not shown in the figure) is provided on the base 100. This second driving component is driven to the tray 200, and can drive the tray 200 to rotate about a vertical axis. This, in turn, can drive the air outlet of the jet fan body 300 to rotate horizontally. Therefore, flue gas control at different heights and horizontal positions can be achieved, improving the applicability of the jet fan. In one example, the second driving component can be a motor, which drives the tray 200 to rotate via gear transmission.

[0032] A flue gas location acquisition device 400 is mounted on a base 100. Several flue gas velocity acquisition devices are spaced apart along the length of the tunnel, for example, one every 10 meters or one every 20 meters. A controller (not shown in the figure) is mounted on the base 100. This controller is electrically connected to the flue gas location acquisition device 400, the flue gas velocity acquisition devices, the first drive unit 210, the second drive unit, and the jet fan body 300. The controller can control the operation of the first drive unit 210, the second drive unit, and the jet fan body 300 based on the flue gas location acquired by the flue gas location acquisition device 400 and the flue gas propagation speed acquired by the flue gas velocity acquisition devices, thereby controlling the flue gas flow. It should be noted that the electrical connections described in this application can be wired or wireless, and no particular limitation is made.

[0033] In one example, the smoke location acquisition device 400 may include a connected camera and a corresponding processing unit. The camera can capture images of the tunnel interior to obtain cross-sectional images. The processing unit can perform image recognition on these cross-sectional images and determine the presence of smoke based on the pixel values ​​in the images. Specifically, those skilled in the art can pre-set corresponding pixel value thresholds based on prior experience. If the pixel value of a certain area in the image is greater than the pixel value threshold, it indicates that smoke exists in that area. In another example, in addition to considering pixel values, the size of the smoke area can also be considered. It should be understood that the smoke should be continuous and occupy a certain area of ​​the image. Therefore, the presence of smoke can be determined only when the pixel value and area size meet certain conditions, thereby improving the accuracy of smoke detection.

[0034] In addition, those skilled in the art can pre-divide the tunnel cross-section into several regions and record information such as the region's number, location, width, and height (e.g., Figure 2 As shown, the tunnel cross-section is pre-divided into 9 regions, and the height, location, width, and other information of each region are determined. When performing image recognition on the cross-sectional image of the tunnel, it can identify whether there is smoke in a certain region of the cross-sectional image. If there is smoke in a certain region, the height of the smoke can be determined based on the height information of that region. The determined height of the smoke and its location are used as the smoke position to facilitate the subsequent control of the jet fan body 300.

[0035] In one example, the smoke velocity acquisition device may include several cameras and their corresponding processing units installed in the tunnel. Adjacent cameras are spaced at predetermined intervals, and each camera has corresponding location information. In actual use, the smoke velocity acquisition device can acquire images of the tunnel in real time and perform image recognition processing on these images to determine whether smoke is detected in the images captured by each camera (the specific recognition method can be found in the aforementioned embodiments and will not be repeated here). When smoke is detected in a certain image, the time information of smoke detection and the corresponding camera's location information can be recorded. The controller can determine the smoke spread rate based on the location information of the two smoke velocity acquisition devices that detected smoke and the time information of their respective smoke detection.

[0036] Furthermore, let W1, W2, ..., W n W n+1 W n+2 ...This is the location where the smoke velocity collection device is installed. After a fire occurs, the smoke spreads along the tunnel. W n+1 The smoke velocity acquisition device at the location detects the smoke and records the smoke arrival time t. n+1 The smoke continued to spread, reaching location W.n+4 Then record the arrival time t of the flue gas. n+4 According to V=( W n+4 - W n+1 ) / ( t n+4 -t n+1 ), which can calculate the flue gas from W n+1 To W n+4 The smoke spread speed over this distance is recorded at each location, and the smoke arrival time is recorded. By repeatedly using the above formula, the smoke spread speed of different sections can be obtained. By analyzing the speed changes of different sections, the smoke spread speed when it reaches the vicinity of the jet fan can be determined, thereby improving the accuracy of determining the smoke spread speed.

[0037] Therefore, the controller can control the first drive unit 210, the second drive unit, and the jet fan body 300 to work based on the flue gas position collected by the flue gas position acquisition device 400 and the flue gas spread speed collected by the flue gas velocity acquisition device, thereby achieving targeted flue gas control and ensuring the flue gas control effect.

[0038] Specifically, the controller can determine the upward tilt angle of the jet fan body 300 based on the height information determined by the flue gas position acquisition device 400. Based on this tilt angle, the controller can control the first drive component 210 to operate, allowing the jet fan body 300 to rise to the corresponding angle. Furthermore, the controller can determine the horizontal rotation speed and outlet air velocity of the jet fan body 300 based on the flue gas propagation speed. It should be understood that flue gas propagation is an irregular movement; for better flue gas control, the jet fan body 300 needs to rotate horizontally to disperse the flue gas within the tunnel cross-section in the same direction. Therefore, the faster the flue gas propagation speed, the faster the corresponding horizontal rotation speed and outlet air velocity.

[0039] Next, the controller can control the second drive unit to work according to the determined horizontal rotation speed so that the tray 200 can reach the corresponding horizontal rotation speed, and control the jet fan body 300 to work according to the outlet wind speed so that the jet fan body 300 can reach the corresponding outlet wind speed. For example, the current through the jet fan can be adjusted.

[0040] In one embodiment of this application, the controller can be based on a fuzzy logic algorithm to determine the upward angle of the jet fan body 300 based on the flue gas height information, and to determine the horizontal rotation speed and outlet air velocity of the jet fan body 300 based on the flue gas propagation velocity. In one example, the flue gas propagation velocity u and the flue gas height information H can be used as input parameters of the fuzzy logic algorithm, and the outlet air velocity V, upward angle T, and horizontal rotation speed U of the jet fan body 300 can be used as output parameters.

[0041] Specifically, the true universe of discourse for the smoke propagation velocity u is taken as {Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ}, with units of m / s, and the values ​​of the fuzzy linguistic variables are defined as follows:

[0042] Z = zero, corresponding to u < II flue gas spread velocity; S = small, corresponding to I ~ III flue gas spread velocity; M = medium, corresponding to II ~ IV flue gas spread velocity; BS = medium to large, corresponding to III ~ V flue gas spread velocity; BB = maximum, corresponding to u > IV flue gas spread velocity.

[0043] The true universe of discourse for the flue gas height information H is {0 6.5}, in meters. The values ​​of the fuzzy linguistic variables are defined as follows:

[0044] Z = zero, corresponding to 0~4.5m; S = small, corresponding to 2.5~6.5m; B = large, corresponding to >4.5m.

[0045] The true universe of discourse for the outlet wind speed V is taken as {0 35}, in m / s. The values ​​of the fuzzy linguistic variables are defined as follows:

[0046] Z = zero, corresponding to 0~11m / s; S = small, corresponding to 5~18m / s; M = medium, corresponding to 11~26m / s; BS = medium-large, corresponding to 18~35m / s; BB = maximum, corresponding to >26m / s.

[0047] Let the true universe of discourse for the upward tilt angle T be {0 60°}, and the values ​​of the fuzzy linguistic variables be defined as follows:

[0048] Z = zero, corresponding to 0~20°; S = small, corresponding to 15~45°; B = large, corresponding to >40°.

[0049] Let the true universe of discourse for the horizontal rotational velocity U be {Ⅰ Ⅱ Ⅲ}, with units of rad / s. The values ​​of the fuzzy linguistic variables are defined as follows:

[0050] Z=zero, corresponding to rotational speed level <II; S=small, corresponding to rotational speed levels I~III; B=large, corresponding to rotational speed level >II.

[0051] Based on the aforementioned fuzzy logic algorithm, it does not calculate the specific values ​​of the upward angle, outlet wind speed, and horizontal rotation speed. Instead, it determines the numerical range corresponding to each output parameter to achieve fuzzy calculation. The controller can control the corresponding components to work according to the determined numerical range corresponding to each output parameter, ensuring both flue gas control effect and calculation efficiency.

[0052] In one embodiment of this application, a moving mechanism 110 is further provided on the base 100. This moving mechanism 110 is electrically connected to the controller and is used to move the base 100, thereby enabling the movement of the jet fan. Thus, the jet fan does not need to be fixed inside the tunnel; instead, it can be moved to the corresponding position according to different fire locations via the moving mechanism 110 to achieve precise control of the smoke, reducing equipment installation costs. In one example, the moving mechanism 110 is a tracked chassis. The controller can control the tracked chassis to operate, allowing the jet fan to move to a designated position within the tunnel. Furthermore, the large tracked chassis provides strong support for the jet fan, ensuring its stability after activation.

[0053] Based on the aforementioned embodiments, a storage battery is also provided inside the base 100. This storage battery is used to power various components, including the controller, the first drive unit 210, the second drive unit, the jet fan body 300, and the moving mechanism 110. Therefore, the jet fan inside the tunnel does not require an external cable for power supply, reducing application limitations and expanding the applicability of the mobile fan.

[0054] According to one embodiment of this application, a control method for a jet fan in a tunnel is also provided. The jet fan in the tunnel can be any of the jet fans described in the foregoing embodiments. The control method includes the following steps:

[0055] S310, the smoke location acquisition device 400 acquires a first image inside the tunnel, performs image recognition on the first image, determines the area information of the smoke within the tunnel cross section, and determines the height information of the smoke based on the area information.

[0056] Those skilled in the art can pre-divide the tunnel cross-section into several areas, and the smoke location acquisition device 400 can determine the area where the smoke is located, thereby determining the height information of the smoke.

[0057] S320, the smoke velocity acquisition device acquires a second image inside the tunnel, performs image recognition on the second image, determines whether there is smoke in the second image, and if so, records the time information of smoke detection.

[0058] S330, the controller determines the upward tilt angle of the jet fan body 300 based on the height information determined by the flue gas position acquisition device 400, and determines the flue gas spread speed based on the position information of the two flue gas velocity acquisition devices that have detected the flue gas and the time information of each of them detecting the flue gas; and determines the horizontal rotation speed and outlet wind speed of the jet fan body 300 based on the flue gas spread speed.

[0059] S340, the controller controls the first drive component 210 to work according to the upward tilt angle, controls the second drive component to work according to the horizontal rotation speed, and controls the jet fan body 300 to work according to the outlet wind speed, so as to achieve flue gas control.

[0060] In this embodiment, the tray 200 is rotatably mounted on the base 100, and the first driving member 210 can drive the air outlet of the jet fan body 300 to reciprocate in the vertical direction. The second driving member can drive the tray 200 to rotate. The controller can control the first driving member 210, the second driving member, and the jet fan body 300 to work according to the smoke position collected by the smoke position collection device 400 and the smoke spread speed collected by the smoke velocity collection device. Thus, the blowing angle and wind speed of the jet fan can be adjusted accordingly for different fire conditions, thereby achieving precise control of the smoke and ensuring the smoke control effect.

[0061] In one embodiment of this application, the controller, based on a fuzzy logic algorithm, determines the upward tilt angle of the jet fan body 300 according to the height information determined by the flue gas position acquisition device 400, and determines the horizontal rotation speed and outlet wind speed of the jet fan body 300 according to the flue gas spread speed.

[0062] In one embodiment of this application, the controller receives a remote control command and controls the moving mechanism 110 to operate according to the remote control command in order to move to the target position.

[0063] In this embodiment, in actual use, the user can send remote control commands to the controller via a remote control device. The controller can receive the remote control commands and control the moving mechanism 110 to operate according to the commands, such as moving forward, backward, turning left, or turning right, to move the jet fan to the target position. Thus, through remote control of the jet fan, it is possible to move the jet fan to the corresponding position according to the actual fire situation, ensuring the smoke control effect.

[0064] In another embodiment of this application, the controller controls the moving mechanism 110 to operate based on the position information of the first flue gas velocity acquisition device that identifies the flue gas, so as to move to the target position.

[0065] In this embodiment, in addition to remote control, the controller can also determine the location of the fire based on the location information of the first smoke velocity acquisition device that identifies the smoke, and then control the moving mechanism 110 to work so that the jet fan moves to the target location, thereby realizing the automatic control of the jet fan.

[0066] It should be noted that for details not disclosed in the embodiments of the method in this application, please refer to the embodiments of the jet fan in the tunnel described above in this application, which will not be repeated here.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0070] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this application.

[0071] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A control method for a jet fan in a tunnel, characterized in that: The jet fan inside the tunnel includes a base, a tray, the main body of the jet fan, a flue gas location acquisition device, and several flue gas velocity acquisition devices. The tray is rotatably mounted on the base. A first driving member is provided on the tray. The main body of the jet fan is hinged to the tray and driven by the first driving member. The first driving member can drive the air outlet of the jet fan body to reciprocate in the vertical direction. A second driving member is provided on the base. The second driving member is driven by the tray and can drive the tray to rotate about the vertical axis. The flue gas location acquisition device is mounted on the base, and a plurality of flue gas velocity acquisition devices are spaced apart along the length of the tunnel within the tunnel. A controller is mounted on the base, and the controller is electrically connected to the flue gas location acquisition device, the flue gas velocity acquisition device, the first drive unit, the second drive unit, and the jet fan body, respectively. The controller can control the first drive unit, the second drive unit, and the jet fan body to operate based on the flue gas location acquired by the flue gas location acquisition device and the flue gas spread velocity acquired by the flue gas velocity acquisition device, so as to perform flue gas control. The base is provided with a moving mechanism, which is electrically connected to the controller and is used to drive the base to move. The control method for the jet fan in the tunnel is as follows: the flue gas location acquisition device acquires a first image in the tunnel, performs image recognition on the first image, determines the area information of the flue gas in the tunnel cross section, and determines the height information of the flue gas based on the area information. The smoke velocity acquisition device acquires a second image inside the tunnel, performs image recognition on the second image to determine whether there is smoke in the second image, and if so, records the time information of smoke detection. The controller determines the upward tilt angle of the jet fan body based on the height information determined by the flue gas position acquisition device, and determines the flue gas spread speed based on the position information of the two flue gas velocity acquisition devices that have detected the flue gas and the time information of their respective flue gas detection; and determines the horizontal rotation speed and outlet wind speed of the jet fan body based on the flue gas spread speed. The controller controls the first drive component to operate according to the upward tilt angle, controls the second drive component to operate according to the horizontal rotation speed, and controls the main body of the jet fan to operate according to the outlet wind speed, so as to achieve flue gas control.

2. The control method for a jet fan in a tunnel according to claim 1, characterized in that, The controller is based on a fuzzy logic algorithm. It determines the upward angle of the jet fan body according to the height information determined by the flue gas position acquisition device, and determines the horizontal rotation speed and outlet wind speed of the jet fan body according to the flue gas spread speed.

3. The control method for a jet fan in a tunnel according to claim 1, characterized in that, The controller receives remote control commands and controls the moving mechanism to move to the target location according to the remote control commands.

4. The control method for a jet fan in a tunnel according to claim 1, characterized in that, The controller controls the moving mechanism to move to the target position based on the position information of the first flue gas velocity acquisition device that detects the flue gas.

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