Tunnel electromechanical equipment control system

Abstract

The embodiment of the invention relates to the technical field of control systems, in particular to an electromechanical equipment control system of a tunnel, in the electromechanical equipment control system of the tunnel provided by the embodiment of the invention, environment data in the tunnel is acquired by arranging an environment sensing module, and an accident site generating a smoke alarm in the tunnel is determined according to the environment data; the target fan in the fan module is determined according to the target position corresponding to the accident site, and the jet air output by the target fan is guided to the target crosswalk by using the target flow guide device, so that the situation that smoke enters the target crosswalk is reduced or avoided, the possibility that the personal safety of personnel in the target crosswalk is threatened is reduced, and thus the safety of the personnel is improved. The system can adapt to the sudden change of the tunnel environment caused by fire, smoke alarm and other accidents, improves the intelligence and adaptability of an electromechanical equipment control system, and reduces the safety risk of tunnel operation management.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of control system technology, and in particular to a control system for electromechanical equipment in a tunnel. Background Technology

[0002] Tunnels, as a crucial component of transportation infrastructure, play a vital role in urban transportation. With accelerating urbanization and increasing traffic volume, the demands on tunnel safety and operational efficiency are constantly rising. In related technologies, jet fans are installed at intervals along the tunnel ceiling, with the fan outlets parallel to the roadway. When an accident occurs within the tunnel (such as a fire) generating smoke hazards, the electromechanical control system activates the jet fans, creating a unidirectional high-speed airflow (usually towards the outlet) to propel the smoke longitudinally out of the tunnel.

[0003] However, the electromechanical equipment control system can only control the jet fan group to form a unidirectional high-speed airflow to ensure unidirectional smoke exhaust in the current tunnel. When people enter or exit pedestrian / vehicle crossings located downstream of the accident point, or when fire doors are not properly closed, smoke may enter the pedestrian / vehicle crossings, causing personnel sheltering inside to still be exposed to smoke hazards, posing a threat to their personal safety. It is evident that the current control system for tunnel electromechanical equipment suffers from a lack of intelligence and low adaptability, making it difficult to adapt to the complex and ever-changing tunnel environment, resulting in high safety risks in tunnel operation and management. Summary of the Invention

[0004] In view of this, one objective of the embodiments of the present invention is to provide a tunnel electromechanical equipment control system to solve the technical problems of the lack of intelligence and low adaptability of the existing tunnel electromechanical equipment control system, and the high safety risks in tunnel operation and management.

[0005] To address the aforementioned technical problems, the embodiments of the present invention provide the following technical solutions: In a first aspect, embodiments of the present invention provide an electromechanical equipment control system for a tunnel, comprising: The control module, and the environmental sensing module, the fan module, and the flow guiding module that are communicatively connected to the control module; The environmental sensing module is configured to collect environmental data in the first tunnel and the second tunnel, and send the environmental data to the control module. At least one cross passage is provided between the first tunnel and the second tunnel, and air inlets are provided on both sides of the cross passage. The environmental data includes image data and sensor data, and the sensor data includes light intensity and gas concentration. The fan module includes multiple fans, wherein the fans are disposed at the top of the first tunnel and the second tunnel, and the fans are configured to output jet air; The flow guiding module includes multiple flow guiding devices, which are located in the first tunnel and the second tunnel. Each flow guiding device corresponds to one fan and one cross passage. The first end of the flow guiding device is positioned towards the annular air outlet of the fan, and the second end of the flow guiding device is connected to the air inlet of the cross passage. The control module is communicatively connected to both the fan and the flow guiding device, and the control module is configured to: Based on the environmental data, a target location is determined. The target location is used to characterize the accident site where the smoke alarm is generated. The tunnel where the target location is located is the tunnel on this side. The tunnels other than the tunnel on this side in the first tunnel and the second tunnel are the tunnels on the opposite side. Based on the target location, a target fan is determined. The target fan is a fan installed in the opposite tunnel and located downstream of the target location. The downstream direction is referenced by the wind direction of the fan in the tunnel on this side. The target flow guiding device is activated to guide the jet air output by the target fan to the target cross channel, which is the cross channel closest to the target fan, and the target flow guiding device is a flow guiding device connected to the air inlet of the target cross channel.

[0006] In some embodiments, the flow guiding device includes a slide rail, a flow guiding ring, and a pipe assembly. The slide rail is fixed to the wall of the first tunnel and the second tunnel near the cross passage and is at the same horizontal height as the reference fan. The reference fan is the fan closest to the cross passage among the plurality of fans. The flow guiding ring is embedded in the slide rail. The first end of the pipe assembly is connected and fixed to the outlet of the flow guiding ring. The inlet of the flow guiding ring is arranged facing the annular air outlet of the reference fan. The second end of the pipe assembly is connected and fixed to the air inlet. The target flow guiding device comprises a slide rail, a flow guiding ring, and a pipe assembly, respectively. The control module controls the target flow guiding device to start operation, causing the target flow guiding device to guide the jet air output by the target fan to the target cross channel, including: Based on the target parameters and the target pressure difference, the working position is calculated, wherein the target parameters represent the parameters that affect the energy of the jet wind guided by the target flow guiding device, the target pressure difference represents the pressure difference between the air inside the target cross passage and the air outside, and the working position is the position where the target flow guiding ring is located on the target slide rail; The target slide rail is controlled to move along a first direction to move the target guide ring to the working position, so that the target guide ring guides the jet air output by the target fan to the target pipe assembly, and the jet air is delivered to the target cross passage through the target pipe assembly. The first direction is the direction from the wall of the opposite tunnel horizontally to the target fan.

[0007] In some embodiments, the target distance between the center of the target guide ring and the center of the annular air outlet represents the working position. The control module calculates the working position based on target parameters and target pressure difference, including: Obtain the target pressure difference; The target parameters are obtained, wherein the target parameters include a first parameter, a second parameter and a third parameter. The first parameter includes the radius of the target guide ring and the sum of the equivalent friction coefficients of the target pipe assembly. The second parameter includes the thrust of the target fan and the radius of the annular air outlet of the target fan. The third parameter includes the air density. The overlapping area is calculated based on the radius of the target guide ring, the radius of the annular air outlet, and the target distance. The overlapping area is the area of ​​overlap between the target guide ring and the annular air outlet. The first capture coefficient is calculated based on the overlapping area and the radius of the target guide ring; Calculate the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density; The second capture coefficient is calculated based on the target pressure difference, the sum of the equivalent friction coefficients, and the dynamic pressure limit value. The target distance is calculated based on the first capture coefficient and the second capture coefficient.

[0008] In some embodiments, the control module calculates a first capture coefficient based on the overlapping area and the radius of the target guide ring, including: Calculate the area of ​​the target guide ring based on its radius; The first capture coefficient is obtained by dividing the overlapping area by the area of ​​the target guide ring.

[0009] In some embodiments, the control module calculates the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density, including: Calculate the area of ​​the annular air outlet based on its radius; Multiply the area of ​​the annular air outlet by the air density to obtain the first product; Divide the thrust by the first product to obtain the first quotient; Based on the first quotient, calculate the outlet wind speed of the annular air outlet; The dynamic pressure limit value is calculated based on the air density and the outlet wind speed.

[0010] In some embodiments, the control module calculates a second capture coefficient based on the target pressure difference, the sum of the equivalent friction coefficients, and the dynamic pressure limit value, including: The sum of the equivalent friction coefficients is added to a first preset value to obtain a first sum value; Multiply the first sum by the target pressure difference to obtain the second product; Divide the second product by the dynamic pressure limit value to obtain the second quotient; The second capture coefficient is calculated based on the second quotient.

[0011] In some embodiments, the control module calculates the target distance based on the first capture coefficient and the second capture coefficient, including: The target distance is calculated by making the first capture coefficient and the second capture coefficient equal.

[0012] In some embodiments, the control module is further configured to: The target wind speed is calculated based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density. The target wind speed is the wind speed at the air inlet of the target cross passage.

[0013] In some embodiments, the control module calculates the target wind speed based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density, including: Multiply the target pressure difference by the first value to obtain a third product. The first value is the product of the second preset value and the third preset value. The third preset value is the sum of the first preset value and the equivalent friction coefficient. Divide the third product by the air density to obtain the third quotient; The target wind speed is calculated based on the third quotient.

[0014] In some embodiments, the pipe assembly includes a rigid pipe, a flexible pipe, and a connecting elbow. The first end of the flexible pipe is fixedly connected to the outlet of the guide ring, the second end of the flexible pipe is fixedly connected to the first end of the rigid pipe, the connecting elbow is embedded in the air inlet, the second end of the rigid pipe is fixedly connected to the first end of the connecting elbow, and the second end of the connecting elbow is fixedly connected to the air inlet. Wherein, the rigid pipe, flexible pipe, and connecting elbow of the target pipe assembly are respectively the target rigid pipe, the target flexible pipe, and the target connecting elbow. The control system obtains the sum of the equivalent friction coefficients of the target pipe assembly, including: Obtain the first standard parameters of the target rigid pipe, the second standard parameters of the target flexible pipe, and the resistance coefficient of the target connecting elbow. The first standard parameters include the friction resistance coefficient, length, and diameter of the target rigid pipe, and the second standard parameters include the friction resistance coefficient, length, and diameter of the target flexible pipe. Based on the first standard parameter, the second standard parameter, and the resistance coefficient, the sum of the equivalent friction coefficients of the target pipe assembly is calculated.

[0015] In some embodiments, the control system calculates the sum of the equivalent friction coefficients of the target pipe assembly based on the first standard parameter, the second standard parameter, and the resistance coefficient, including: Multiply the frictional resistance coefficient of the target rigid pipe by the length of the target rigid pipe to obtain the fourth product; Divide the fourth product by the diameter of the target rigid pipe to obtain the fourth quotient. Multiply the frictional resistance coefficient of the target flexible pipe by the length of the target flexible pipe to obtain the fifth product; Divide the fifth product by the diameter of the target rigid pipe to obtain the fifth quotient. The fourth quotient, the fifth quotient, and the resistance coefficient are added together to obtain the total equivalent friction coefficient.

[0016] The embodiments of the present invention have the following beneficial effects: Unlike the prior art, the tunnel electromechanical equipment control system provided in the embodiments of the present invention includes: a control module and an environmental sensing module, a fan module, and a flow guiding module communicatively connected to the control module. The environmental sensing module is configured to collect environmental data within a first tunnel and a second tunnel, and send the environmental data to the control module. Multiple cross passages are provided between the first tunnel and the second tunnel, with air inlets on both sides of each cross passage. The environmental data includes image data and sensor data, including light intensity and gas concentration. The fan module includes multiple fans, which are located at the top of the first tunnel and the second tunnel, and are configured to output jet air. The flow guiding module includes multiple flow guiding devices, which are located within the first tunnel and the second tunnel. One flow guiding device corresponds to one fan and one cross passage. The first end is set towards the annular air outlet of the fan, and the second end of the flow guiding device is connected to the air inlet of the cross passage. The control module is communicatively connected to the fan and the flow guiding device respectively. The control module is configured to: determine the target location based on environmental data. The target location is used to characterize the accident location that generates smoke alarm. The tunnel where the target location is located is the tunnel on this side. The tunnels in the first tunnel and the second tunnel other than the tunnel on this side are the tunnels on the opposite side. Based on the target location, determine the target fan. The target fan is a fan set in the tunnel on the opposite side and located downstream of the target location. The downstream direction is referenced by the wind direction of the fan in the tunnel on this side. Control the target flow guiding device to start working, so that the target flow guiding device guides the jet air output by the target fan to the target cross passage. The target cross passage is the cross passage closest to the target fan. The target flow guiding device is a flow guiding device connected to the air inlet of the target cross passage.

[0017] In the tunnel electromechanical equipment control system provided by this invention, an environmental sensing module is set up to acquire environmental data inside the tunnel. Based on the environmental data, the accident location where a smoke alarm is generated inside the tunnel is determined. The target fan in the fan module is determined according to the target location corresponding to the accident location. The jet air output by the target fan is guided to the target cross passage using a target flow guiding device, thereby reducing or avoiding the occurrence of smoke entering the target cross passage and reducing the possibility of personal safety threats to personnel inside the target cross passage. In this way, it can adapt to sudden changes in the tunnel environment caused by accidents such as fires and smoke alarms, improve the intelligence and adaptability of the electromechanical equipment control system, and reduce the safety risks of tunnel operation and management. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the prior art or embodiments will be briefly introduced below. Obviously, the drawings described below only show some embodiments of the present invention and should not be considered as limiting the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1a This is a schematic diagram of the structure of the electromechanical equipment control system of the tunnel in some embodiments of the present invention; Figure 1b This is a schematic diagram of the structure of the electromechanical equipment control system of the tunnel in some other embodiments of the present invention; Figure 2 This is a schematic diagram illustrating the application scenario of the electromechanical equipment control system of the tunnel in some embodiments of the present invention; Figure 3 This is an installation diagram of various components in the electromechanical equipment control system of a tunnel provided in some embodiments of the present invention; Figure 4 This is a schematic diagram of the electromechanical equipment control system of a tunnel provided in some embodiments of the present invention from a top-down perspective; Figure 5a This is a schematic diagram of the control module execution steps in the electromechanical equipment control system of a tunnel provided in some embodiments of the present invention; Figure 5b This is a schematic diagram illustrating the application scenario of the electromechanical equipment control system of the tunnel in other embodiments of the present invention; Figure 6 This is a schematic diagram showing the correspondence between the distance between the center of the guide ring and the center of the annular air outlet and the target pressure difference provided in some embodiments of the present invention. Detailed Implementation

[0020] To make the objectives and advantages of the embodiments of the present invention more readily understood, 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 a part of the embodiments of the present invention, and not all of them. The detailed description of the embodiments of the present invention in the accompanying drawings is not intended to limit the scope of protection claimed by the present invention, but only to illustrate selected embodiments of the present invention. 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.

[0021] It should be noted that, unless there is a conflict, the various technical features involved in the embodiments of the present invention described below can be combined with each other, and all are within the protection scope of the present invention. Furthermore, although functional modules are divided in the device or structural schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. In addition, the terms "first," "second," "third," and other similar expressions used herein do not limit the data or execution order, but are only for illustrative purposes and to distinguish identical or similar items with substantially the same function and effect, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features.

[0022] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. It should be understood that the term "and / or" as used herein includes any and all combinations of one or more of the listed items.

[0023] Please see Figure 1a and Figure 1b , Figure 1a The schematic diagram illustrates the structure of the electromechanical equipment control system for a tunnel provided in some embodiments of the present invention. Figure 1b The diagram illustrates a detailed structural schematic of the electromechanical equipment control system for a tunnel provided in some embodiments of the present invention.

[0024] like Figure 1a As shown, the mechanical and electrical equipment control system 100 of the tunnel includes a control module 110 and an environmental sensing module 120, a fan module 130 and a flow guiding module 140 that are communicatively connected to the control module 110. The environmental sensing module 120, the fan module 130 and the flow guiding module 140 are set at any suitable location inside the tunnel.

[0025] Typically, urban tunnels passing through mountains have two sections; for ease of understanding and explanation, these are referred to as the first tunnel and the second tunnel in this embodiment of the invention. The environmental sensing module 120 is configured to collect environmental data within the first and second tunnels and send this data to the control module 110. At least one cross passage is provided between the first and second tunnels, with air inlets on both sides of the cross passage. The environmental data includes image data and sensor data. The sensor data includes light intensity and gas concentration; of course, the environmental data can also include any other suitable type of data, such as lidar data, and the sensor data can also include any other suitable type of data, such as the wind speed at the cross passage air inlets.

[0026] It is understood that the environmental perception module 120 includes a camera, infrared sensor, lidar, light sensor, and gas concentration sensor, etc., used to sense and acquire corresponding data (such as image data, lidar data, light intensity data, and gas concentration data), thereby obtaining environmental data within the first and second tunnels. The gas concentration data includes the concentration values ​​of harmful gases (such as carbon monoxide) and the concentration values ​​of other gases whose concentrations significantly increase when smoke is generated, thus enabling the determination of whether a smoke alarm has been generated within the tunnel and the corresponding accident location based on the gas concentration data.

[0027] Please see Figure 1b The fan module 130 includes multiple fans 131, which are spaced apart at the top of the first tunnel and the second tunnel. The fans 131 are configured to output jet air, specifically to output jet air with a fixed direction.

[0028] The airflow guiding module 140 includes multiple airflow guiding devices 141, which are spaced apart within the first and second tunnels, for example, they can be installed in the walls of the first and second tunnels and at the same horizontal level as the fan 131, so as to guide the jet air output by the fan 131 to the cross passage located between the first and second tunnels. It can be understood that one airflow guiding device 141 corresponds to one fan 131 and one cross passage. The first end of the airflow guiding device 141 is positioned towards the annular air outlet of the fan 131, and the second end of the airflow guiding device 141 is connected to the air inlet of the cross passage, thus enabling the airflow guiding device 141 to guide the jet air output by the fan 131 to the cross passage. The control module 110 is communicatively connected to both the fan 131 and the airflow guiding devices 141, and the control module 110 controls the fan 131 and the airflow guiding devices 141 to work together to achieve intelligent control of the electromechanical equipment control system.

[0029] It should be understood that, Figure 1a and Figure 1b This invention merely illustrates the structure of a tunnel electromechanical equipment control system in some embodiments, and does not limit the structure or type of tunnel electromechanical equipment control systems in other embodiments. For example, in some other embodiments, the tunnel electromechanical equipment control system may include more... Figure 1a and Figure 1b The structure shown has more or fewer components, or has the same Figure 1a and Figure 1b The diagram shows different configurations of the structure.

[0030] Please see Figures 2 to 4 , Figure 2 This diagram illustrates a scene inside the first and second tunnels from a top-down perspective during smoke alarm activation in some embodiments of the present invention. Figure 3The diagram illustrates the installation of various components in the electromechanical equipment control system of a tunnel within a first or second tunnel, according to some embodiments of the present invention. Figure 4 The diagram shows a top-view structural schematic of the electromechanical equipment control system for a tunnel provided in some embodiments of the present invention.

[0031] like Figure 2 As shown, the urban ordinary tunnel is a twin-tube tunnel, which includes a first tunnel and a second tunnel. The direction of the jet air output by each jet fan 131 in the tunnel (i.e., Figure 2 The normal direction shown) and the driving direction of vehicles in each one-way lane inside the tunnel (i.e. Figure 2 and Figure 4 (The direction of travel shown is the same as the direction of travel shown).

[0032] like Figure 3 and Figure 4 As shown, the flow guiding device 141 includes a slide rail 1411, a flow guiding ring 1412, and a pipe assembly 1413. The pipe assembly 1413 includes a rigid pipe 14131, a flexible pipe 14132, and a connecting elbow 14133. The environmental sensing module 120 includes various sensors (such as wind speed sensors, light sensors, lidar, differential pressure gauges, infrared sensors, cameras, and gas concentration sensors). The control module 110 includes an edge intelligent control box, which communicates with various sensors to obtain data sensed by these sensors, thereby obtaining environmental data within the cross passage and tunnel. The connection relationships of the various components in the tunnel's electromechanical equipment control system are as follows: 1. The flow guide ring 1412 is set on the slide rail 1411. The first end of the flow guide ring 1412 is connected to a short flexible pipe 14132. The initial position of the flow guide ring 1412 is at the dotted line.

[0033] 2. The second end of the flexible duct 14132 is connected to a longer rigid duct 14131, which is typically made of stainless steel or PP material. Guide vanes are installed at the bends and connecting bends 14133 of the rigid duct 14131, resulting in low overall air resistance. The rigid duct 14131 can reach a maximum length of 60 meters (based on a common jet fan layout with 120-meter intervals, where the crossbar is located between two jet fans).

[0034] 3. Among them, the rigid pipe 14131 bends at the largest possible obtuse angle close to the tunnel wall, extends along the tunnel wall to the fire door of the cross passage and is fixed thereon. An entrance (i.e., air inlet) is drilled above the fire door, and the pipe passes through the cross passage from the entrance (usually by opening an inclined air inlet to reduce wind resistance), without affecting the opening and closing of the fire door.

[0035] 4. The wind speed sensor is installed at the air inlet to detect whether the wind speed has reached the estimated value. The system detects the environment within the crosswalk, acquiring environmental data by using various sensors installed within the crosswalk (such as light sensors, lidar, infrared sensors, cameras, and gas concentration sensors) to check if environmental data (such as COVI / smoke / heat) is normal. If abnormal, a smoke alarm is triggered. COVI refers to carbon monoxide (CO) and visibility (VI) detection data.

[0036] 5. Detect the tunnel environment (i.e., detect the environment inside the tunnel) and obtain environmental data. This is done by using various sensors (such as light sensors, lidar, infrared sensors, cameras, and gas concentration sensors) installed outside the fire door on the opposite side of the tunnel or inside the tunnel on this side to detect whether the environment (e.g., COVI / smoke / heat) is normal. If the environment is abnormal, a smoke alarm is triggered. Detect the pressure difference between the air inside and outside the tunnel. This is done by using a differential pressure gauge installed next to the fire door on the opposite side of the tunnel (i.e., the side closest to this side of the tunnel). The differential pressure gauge has two probes: one probes the air pressure inside the tunnel, and the other probes through the tunnel wall to detect the air pressure outside the tunnel. This is used to measure the internal and external air pressures in real time, compare the external and internal pressures, and determine the pressure difference. This allows for checking whether the internal air pressure meets the specified smoke extraction standard of being higher than the external air pressure.

[0037] For example, if an accident occurs in a lane of the first tunnel (this side tunnel) and smoke is generated at the accident site, the smoke is carried downstream of the accident site in the tunnel by the jet air output from the fan / jet fan 131 installed in the first tunnel (this side tunnel) along the normal direction, and dispersed to the outside of the tunnel from the downstream outlet. During the movement of the smoke downstream of the accident site in the normal direction, there is a risk that the smoke may intrude into the crosswalk located between the first and second tunnels and downstream of the accident site. For example, the smoke may move along... Figure 2 The dashed arrow indicates that the smoke entering the target cross passage downstream of the accident site will endanger those taking refuge inside, posing a threat to their personal safety. This demonstrates that, in related technologies, the intelligence and adaptability of tunnel electromechanical equipment control systems are relatively low, making them ill-suited to the complex and ever-changing tunnel environment. When an accident occurs within the tunnel and a smoke alarm is triggered, the low intelligence and adaptability of the electromechanical equipment control system will lead to a high safety risk.

[0038] In view of this, embodiments of the present invention provide a tunnel electromechanical equipment control system, which has high intelligence and adaptability. When smoke is generated at the accident site in the lane of the first tunnel (this side tunnel), environmental data is sensed and acquired by the environmental sensing module 120 installed in the first tunnel, and the environmental data is transmitted to the control module 110 (e.g., Figure 3 The edge intelligent control box and central control system are shown.

[0039] The control module 110 determines the location of the smoke alarm within the first tunnel based on the received environmental data, and determines the target fan (e.g., based on the location of the accident site) according to the location of the accident site. Figure 2 The jet fan 131 shown is located in the opposite tunnel and downstream of the accident site. Figure 2 The jet fan 131 within the dashed box is identified as the target flow guide device (e.g., the flow guide device corresponding to the target fan). Figure 3 or Figure 4 The flow guiding device 141 shown uses the target flow guiding device to guide the jet air output by the target fan to the target cross passage. That is, it drives the target flow guiding device to move from the initial position to the working position, so that the target flow guiding device guides the jet air output by the target fan to the target cross passage in the working position, thereby reducing or even avoiding the occurrence of smoke entering the target cross passage, reducing the possibility of personal safety threats to personnel in the target cross passage, adapting to sudden changes in the tunnel environment caused by accidents such as fire and smoke alarms, improving the intelligence and adaptability of the electromechanical equipment control system, and reducing the safety risks of tunnel operation and management.

[0040] Specifically, such as Figure 5a As shown, control module 110 is configured to perform the following steps S100-S300: S100: Determine the target location based on environmental data.

[0041] In this embodiment, the target location is used to characterize the accident site where the smoke alarm is generated. The tunnel where the target location is located is the tunnel on this side (i.e., the first tunnel), and the tunnel other than the tunnel on this side in the first and second tunnels is the tunnel on the opposite side (i.e., the second tunnel). It is understood that the embodiments of the present invention are only illustrative examples of an accident occurring in a lane within the first tunnel and generating a smoke alarm, and do not limit the specific tunnels referred to as the tunnel on this side and the tunnel on the opposite side. For example, in some embodiments, when an accident occurs in the second tunnel and generates a smoke alarm, that is, when the accident site generating the smoke alarm (i.e., the target location) is located within the second tunnel, then the second tunnel is the tunnel on this side, and the first tunnel is the tunnel on the opposite side.

[0042] Specifically, in this embodiment of the invention, environmental data is processed, including filtering, denoising, enhancement, and parsing, to extract key data from the environmental data. Based on the key data, any suitable processing method and technology (such as image processing technology) is used to calculate and determine the accident location that generates the smoke alarm, thereby determining the target location.

[0043] S200: Determine the target wind turbine based on the target location.

[0044] In this embodiment, the target fan is a fan installed in the opposite tunnel and located downstream of the target location. The downstream direction is referenced to the wind direction of the fan in this tunnel. That is, the smoke generated by the accident will move downstream of the tunnel along the wind direction of the fan / jet fan 131 in this tunnel. The target fan needs to be located downstream of the target location.

[0045] Specifically, based on the target location corresponding to the accident site where a smoke alarm was generated within this tunnel, and taking into account the wind direction of the fans within this tunnel, one or more fans installed in the opposite tunnel and located downstream of the target location are identified as target fans. For example, please refer to... Figure 2 , Figure 2 The image shows a jet fan (i.e., located in the opposite tunnel and downstream of the target location corresponding to the accident site) positioned in the downstream direction / downstream area. Figure 2 The jet fan 131 within the dashed box is the target fan.

[0046] Of course, there may be multiple jet fans (i.e., target fans) located downstream of the target location corresponding to the accident site in the opposite tunnel, in the downstream direction / downstream area. For example, please refer to [link to relevant documentation]. Figure 5b , Figure 5b This schematically illustrates a scene in the first and second tunnels from a top-down perspective during a smoke alarm in some other embodiments of the present invention, where the jet fan (i.e., located downstream of the target position corresponding to the accident site) is positioned in the downstream direction / downstream region. Figure 5b The jet fan 131 (target fan) within the dashed box includes multiple fans.

[0047] S300: Controls the target flow guiding device to start working, so that the target flow guiding device guides the jet air output by the target fan to the target cross channel.

[0048] In this embodiment of the invention, the target cross passage is the cross passage closest to the target fan, and the target flow guiding device is a flow guiding device connected to the air inlet of the target cross passage, i.e., connected to the target fan (e.g., the air inlet of the target cross passage). Figure 3 The flow guiding device corresponding to the jet fan 131 shown is the target flow guiding device (such as...). Figure 3 The guide device 141 shown is a crossbar corresponding to the target guide device, which is the target crossbar.

[0049] For example, after identifying the target fan, the corresponding target airflow guiding device is activated. This device guides the jet air output from the target fan to the target cross passage. In other words, the target airflow guiding device moves from its initial position to its operating position, guiding the jet air output from the target fan to the target cross passage. It is understood that after guiding the jet air to the target cross passage, a high pressure difference is maintained between the air inside and outside the cross passage, thus preventing smoke from entering and reducing or avoiding its entry. The initial position typically refers to the position of the airflow guiding device when it is off and not operating. The operating position refers to the position where the airflow guiding device maintains the pressure difference between the air inside and outside the cross passage at the target pressure difference. When the pressure difference is at the target pressure difference, the airflow guiding device effectively reduces or prevents smoke from entering the target cross passage. Designers can set the target pressure difference in advance based on empirical and experimental data, but this embodiment of the invention does not impose any limitations on this.

[0050] It is understood that when there are multiple target fans, the embodiments of the present invention simultaneously control multiple target flow guiding devices corresponding to multiple target fans to guide the jet air output by multiple target fans to multiple target cross passages corresponding to multiple target flow guiding devices, thereby maintaining a high pressure difference between the air inside each target cross passage and the air outside, preventing smoke in the air outside each target cross passage from entering each target cross passage, and reducing or avoiding the occurrence of smoke entering the target cross passage.

[0051] It should be understood that Figures 2 to 4 Figure 5 is merely a schematic illustration of the structure, application scenarios, and installation methods of the tunnel electromechanical equipment control system in some embodiments of the present invention, and does not limit the structure, type, application scenarios, or installation methods of the tunnel electromechanical equipment control system in other embodiments. For example, in some other embodiments, the tunnel electromechanical equipment control system may include more or fewer fans, flow guiding devices, and / or crosswalks, etc.

[0052] Please see Figure 3 , Figure 3 The diagram illustrates the connection of various components in the electromechanical equipment control system of a tunnel provided in some embodiments of the present invention.

[0053] like Figure 3As shown, in some embodiments, the flow guiding device 141 includes a slide rail 1411, a flow guiding ring 1412, and a pipe assembly 1413. The slide rail 1411 is fixed to the wall of the first tunnel and the second tunnel near the cross passage and is at the same horizontal height as the reference fan. The reference fan is the fan closest to the cross passage among multiple fans (e.g., ...). Figure 3 The jet fan 131 shown is the closest to the crossbar.

[0054] A guide ring 1412 is embedded in a slide rail 1411. The first end of a pipe assembly 1413 is connected and fixed to the outlet of the guide ring 1412. The inlet of the guide ring 1412 faces the annular outlet of the reference fan. The second end of the pipe assembly 1413 is connected and fixed to the inlet of the cross passage. For example, the slide rail 1411 includes an upper slide rail and a lower slide rail. The spacing between the upper and lower slide rails is adapted to the size of the guide ring 1412, allowing the guide ring 1412 to be embedded between the upper and lower slide rails. The first ends of the upper and lower slide rails are fixed to the wall near the cross passage, and the second ends extend horizontally towards the middle area of ​​the tunnel. The length of the upper and lower slide rails is greater than or equal to the distance between the reference fan and the tunnel wall, thereby enabling the guide ring 1412 to be moved to a position aligned with the reference fan when needed, utilizing the entire area of ​​the guide ring 1412 to guide the jet air output by the reference fan to the cross passage.

[0055] It is understood that in order for the slide rail 1411 to drive / move the guide ring 1412 from the initial position to the working position and from the working position back to the initial position, the slide rail 1411 needs to include at least a driving component (for driving the guide ring 1412 to move), a sliding component (for embedding the guide ring 1412), and a positioning component (for positioning the guide ring 1412). Those skilled in the art can connect the driving component, the sliding component, and the positioning component in any suitable connection method, so that the driving component, the sliding component, and the positioning component work together to drive / move the guide ring 1412 to move.

[0056] In some embodiments, the control module controls the target flow guiding device to start working, so that the target flow guiding device guides the jet air output by the target fan to the target cross channel, specifically including the following steps S310-S320: S310: Calculate the working position based on the target parameters and target pressure difference.

[0057] In this embodiment of the invention, the slide rail, the guide ring, and the pipe assembly of the target flow guiding device are respectively the target slide rail, the target guide ring, and the target pipe assembly.

[0058] In this embodiment, the target parameters characterize parameters that affect the energy of the jet air guided by the target guide device. Examples include the overlap area between the target guide ring and the annular outlet of the target fan (i.e., using the overlap area of ​​the target guide ring to guide the jet air output by the target fan to the target cross passage), the thrust output by the target fan, and the friction coefficient of the target pipe assembly. The target pressure difference characterizes the pressure difference between the air inside and outside the target cross passage. Engineers can set the target pressure difference based on experimental and empirical data. The working position is the position where the target guide ring is located on the target slide rail, for example... Figure 3 The guide ring 1412 shown is located at the position of slide rail 1411.

[0059] For example, in this embodiment of the invention, a target pressure difference is preset and obtained when calculating the working position. This embodiment also obtains the frictional resistance coefficient, length, and radius of each component in the target flow guiding device, as well as the thrust of the target fan, to obtain target parameters. The working position is calculated based on the target parameters and the target pressure difference.

[0060] S320: Control the target slide rail to move along the first direction to drive the target guide ring to the working position, so that the target guide ring guides the jet air output by the target fan to the target pipe assembly, and delivers the jet air to the target cross passage through the target pipe assembly.

[0061] In this embodiment of the invention, the first direction is the direction from the wall of the opposite tunnel horizontally towards the target fan, for example, see [reference needed]. Figure 3 or Figure 4 The first direction is Figure 3 The direction M shown is... Figure 4 The direction N shown is the first direction, which is the direction from the wall of the opposite tunnel (second tunnel) horizontally towards the target fan (i.e., jet fan 131).

[0062] Specifically, after calculating the working position, this embodiment of the invention controls the sliding component of the target slide rail to move along a first direction, thereby moving the target guide ring embedded in the sliding component to the working position. That is, it moves the target guide ring along the first direction to the working position, so that the target guide ring guides the jet air output by the target fan to the target duct assembly at the working position. The jet air guided to the target duct assembly is then transported to the target cross passage via the target duct assembly, thereby maintaining the pressure difference between the air inside and outside the target cross passage at the target pressure difference, ensuring a better effect of reducing or preventing smoke from entering the target cross passage. For example... Figure 3As shown, the sliding component of the control slide rail 1411 moves along the first direction M to drive the guide ring 1412 to move from the initial position to the working position along the first direction, so that the guide ring 1412 guides the jet air output by the target fan (i.e., the jet fan 131) to the pipe assembly 1413 in the working position, and the target pipe assembly 1413 delivers the jet air to the target cross passage.

[0063] For example, in some embodiments, the control module calculates the working position based on the target parameters and the target pressure difference, specifically including the following steps S311-S317: S311: Obtain the target pressure difference.

[0064] In this embodiment of the invention, engineers set a target pressure difference based on experimental and empirical data, and store the target pressure difference in a parameter database. When calculating the working position, the required target pressure difference is obtained from the parameter database. Understandably, when the pressure difference between the air inside and outside the crosswalk is maintained at the target pressure difference, the flow guiding device has a better effect of reducing or preventing smoke from entering the crosswalk.

[0065] S312: Obtain the target parameters.

[0066] In this embodiment, the target parameters include a first parameter, a second parameter, and a third parameter. The first parameter includes the radius of the target guide ring and the sum of the equivalent friction coefficients of the target pipe assembly. The second parameter includes the thrust of the target fan and the radius of the annular air outlet of the target fan. The third parameter includes the air density.

[0067] Specifically, engineers pre-calculate and determine the first, second, and third parameters (i.e., target parameters) based on the materials, lengths, radii, and installation methods of each component in the flow guiding device, the performance parameters of the target fan, and the radii and installation methods of each component in the target fan. The target parameters are then stored in any suitable storage medium. When the working position needs to be calculated, this embodiment of the invention retrieves the target parameters of the target flow guiding device and the target fan from the storage medium.

[0068] For example, the target parameters are shown in Table 1 below: Table 1:

[0069] In some embodiments, the sum of the equivalent friction coefficients of the target pipeline assembly is calculated based on the length of each component in the target pipeline assembly and the friction resistance coefficient. That is, the engineer calculates the sum of the equivalent friction coefficients in advance based on the length of each component in the target pipeline assembly and the friction resistance coefficient, and stores it in the storage medium as one of the target parameters.

[0070] In some embodiments, please refer to Figure 4The duct assembly 1413 includes a rigid duct 14131, a flexible duct 14132, and a connecting elbow 14133. The first end of the flexible duct 14132 is fixedly connected to the outlet of the guide ring 1412, and the second end of the flexible duct 14132 is fixedly connected to the first end of the rigid duct 14131. The connecting elbow 14133 is embedded and fixedly installed in the air inlet of the crossbeam. The second end of the rigid duct 14131 is fixedly connected to the first end of the connecting elbow 14133, and the second end of the connecting elbow 14133 is fixedly connected to the air inlet.

[0071] It is easy to understand that the flexible duct 14132 has a certain degree of flexibility. When the jet air output by the guide fan is required, the flexible duct 14132 can be stretched to a certain length. Thus, after the guide ring is moved from the initial position to the working position, the jet air that is guided into the guide ring can be transported along the flexible duct 14132 to the rigid duct 14131 and finally transported into the cross passage.

[0072] Understandably, in order for the flow guiding device to direct the jet air to the cross channel, the connections and fixation of each component in the flow guiding device need to meet a certain degree of sealing to ensure that the guided jet air can be delivered to the cross channel to the maximum extent, reduce jet air loss, and improve flow guiding efficiency. It should be understood that those skilled in the art can use any suitable sealing device and sealing method to seal the connections of each component in the flow guiding device (e.g., the connection between rigid pipe 14131 and flexible pipe 14132, the connection between flexible pipe 14132 and flow guiding ring 1412, and the connection between rigid pipe 14131 and connecting elbow 14133), so that the entire flow guiding device meets the sealing requirements.

[0073] In some embodiments, the control module obtains the sum of the equivalent friction coefficients of the target pipe assembly, specifically including the following steps S3121-S3122: S3121: Obtain the first standard parameters of the target rigid pipe, the second standard parameters of the target flexible pipe, and the resistance coefficient of the target connecting elbow.

[0074] S3122: Calculate the sum of the equivalent friction coefficients of the target pipeline assembly based on the first standard parameter, the second standard parameter, and the resistance coefficient.

[0075] In this embodiment, the rigid pipe, flexible pipe, and connecting elbow of the target pipe assembly are respectively the target rigid pipe, the target flexible pipe, and the target connecting elbow. In this embodiment of the invention, the first standard parameters include the friction resistance coefficient, length, and diameter of the target rigid pipe, and the second standard parameters include the friction resistance coefficient, length, and diameter of the target flexible pipe.

[0076] Specifically, when installing the target piping assembly, engineers determine the friction resistance coefficient of the target rigid pipe based on its material and roughness, and then determine its length and diameter based on its total length and diameter during actual installation. The friction resistance coefficient, length, and diameter of the target rigid pipe constitute the first standard parameter. Similarly, the friction resistance coefficient of the target flexible pipe is determined based on its material and roughness, and its length and diameter are determined based on its total length and diameter during actual installation. The friction resistance coefficient, length, and diameter of the target flexible pipe constitute the second standard parameter. Finally, the resistance coefficient of the target connecting elbow is determined based on its material, length, and roughness.

[0077] In some embodiments, the first standard parameter, the second standard parameter, and the resistance coefficient of the target connecting elbow are shown in Table 2 below: Table 2:

[0078] For example, after obtaining the first standard parameter, the second standard parameter, and the resistance coefficient, the equivalent friction resistance coefficient of the target rigid pipe is calculated based on the first standard parameter, and the equivalent friction resistance coefficient of the target flexible pipe is calculated based on the second standard parameter. The resistance coefficient of the target connecting elbow, the equivalent friction resistance coefficient of the target rigid pipe, and the equivalent friction resistance coefficient of the target flexible pipe are added together to obtain the sum of the equivalent friction coefficients of the target pipe assembly.

[0079] For example, in some embodiments, the control module calculates the sum of the equivalent friction coefficients of the target pipe assembly based on the first standard parameter, the second standard parameter, and the resistance coefficient, specifically including the following steps S31221-S31225: S31221: Multiply the friction resistance coefficient of the target rigid pipe by the length of the target rigid pipe to obtain the fourth product.

[0080] S31222: Divide the fourth product by the diameter of the target rigid pipe to obtain the fourth quotient.

[0081] S31223: Multiply the friction resistance coefficient of the target flexible pipe by the length of the target flexible pipe to obtain the fifth product.

[0082] S31224: Divide the fifth product by the diameter of the target rigid pipe to obtain the fifth quotient.

[0083] S31225: Add the fourth quotient, the fifth quotient, and the drag coefficient to obtain the total equivalent friction coefficient.

[0084] Specifically, after obtaining the first standard parameters (i.e., the friction resistance coefficient, length, and diameter of the target rigid pipe), the second standard parameters (i.e., the friction resistance coefficient, length, and diameter of the target flexible pipe), and the resistance coefficient, the friction resistance coefficient of the target rigid pipe is multiplied by the length of the target rigid pipe to obtain a fourth product. This fourth product is then divided by the diameter of the target rigid pipe to obtain a fourth quotient, which is the equivalent friction resistance coefficient of the target rigid pipe. The friction resistance coefficient of the target flexible pipe is then multiplied by the length of the target flexible pipe to obtain a fifth product. This fifth product is then divided by the diameter of the target rigid pipe to obtain a fifth quotient, which is also the equivalent friction resistance coefficient of the target flexible pipe. Finally, the fourth and fifth quotients are added to the resistance coefficient of the target connecting elbow to obtain the total equivalent friction coefficient of the target pipe assembly.

[0085] S313: Calculate the overlapping area based on the radius of the target guide ring, the radius of the annular air outlet, and the target distance.

[0086] In this step, the overlapping area is the area where the target guide ring and the annular air outlet overlap.

[0087] In this embodiment, the initial position of the target guide ring is characterized by the initial distance between the center of the target guide ring and the center of the annular outlet of the target fan, for example, see [reference needed]. Figure 4 As shown, when the target guide ring is in its initial position, its center is located on line L2, and the center of the annular outlet of the target fan is located on line L1. Therefore, the initial distance between the center of the target guide ring and the center of the annular outlet of the target fan is the distance S between lines L1 and L2. In other words, the distance S between lines L1 and L2 represents the initial position of the target guide ring. It can be understood that as the target guide ring moves along the target slide rail to its working position, the distance between the center of the target guide ring and the center of the annular outlet of the target fan (i.e., the distance S between lines L1 and L2) will change as the target guide ring moves. The distance between the center of the target guide ring and the center of the annular outlet of the target fan will gradually decrease until the target guide ring is in its working position. At this point, the distance between the center of the target guide ring and the center of the annular outlet is the target distance, which represents the working position of the target guide ring.

[0088] For example, the relevant parameters and their corresponding marking symbols required to calculate the working position are first determined, as shown in Table 3 below: Table 3:

[0089] For example, according to engineering mathematical formulas, the formula for calculating the overlap area (i.e., the intersecting area) between the target guide ring and the annular air outlet is as follows:

[0090] Among them, if This indicates that the target fan and the target guide ring are too far apart, and the target guide ring and the annular air outlet of the target fan do not intersect. In this case, the overlap area is... .like This indicates that one of the target guide rings and the annular outlet of the target fan is completely contained by the other, and the overlapping area is the smaller of the area of ​​the target guide ring and the area of ​​the annular outlet of the target fan. In other cases, the overlapping area is calculated using analytical geometry formulas, as shown in formula (1) above. It is understood that for the symbols involved in formula (1) but not shown in Table 3, please refer to Tables 1 and 2. The same symbols in formula (1) and Tables 1 and 2 have the same meaning.

[0091] In some embodiments of the present invention, after obtaining the radius of the target guide ring, the radius of the annular air outlet, and the target distance, the overlapping area is calculated based on the radius of the target guide ring, the radius of the annular air outlet, and the target distance. It should be understood that when... In other cases, the overlapping area Including unknowns (i.e., target distance) The target distance needs to be calculated by combining subsequent relevant parameters. .

[0092] S314: Calculate the first capture coefficient based on the overlapping area and the radius of the target guide ring.

[0093] Specifically, the area of ​​the target guide ring is calculated based on its radius. Then, the ratio of the overlapping area to the area of ​​the target guide ring is used as the first capture coefficient. (Right now The first capture coefficient is used in subsequent calculations.

[0094] In some embodiments, the control module calculates a first capture coefficient based on the overlapping area and the radius of the target guide ring, specifically including the following steps S3141-S3142: S3141: Calculate the area of ​​the target guide ring based on its radius.

[0095] S3142: Divide the overlapping area by the area of ​​the target guide ring to obtain the first capture coefficient.

[0096] For example, if the target air guide ring is circular, the area of ​​the target air guide ring can be calculated by substituting its radius into the formula for calculating the area of ​​a circle. Dividing the overlapping area by the area of ​​the target guide ring yields the first capture coefficient, which is the ratio of the overlapping area to the area of ​​the target guide ring. .

[0097] S315: Calculate the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density.

[0098] For example, according to Newton's second law, the mass flow rate of the jet per unit time The fluid has a velocity of The resulting momentum force is The volume of fluid flowing per second is ,in This represents the area of ​​the annular outlet of the target fan. The annular outlet can be understood as circular. Using the formula for calculating the area of ​​a circle, the radius of the target fan's annular outlet is substituted into the formula to calculate the area of ​​the target fan's annular outlet. , The volume of fluid flowing per second. With air density Multiply to obtain mass flow rate Therefore, mass flow rate Then the mass flow rate Substituting into the momentum force formula ,get .

[0099] Formula By working backwards, the outlet velocity of the annular outlet of the target fan can be obtained. It should be understood that since the guide rings in the fan and the flow guiding device are located at the same horizontal height and the height is constant, the guide rings of the fan and the flow guiding device can be regarded as a horizontal, constant-height system. Therefore, when calculating the dynamic pressure limit of the system according to Bernoulli's equation, it is not necessary to consider the potential energy of the fluid, and Bernoulli's equation can be simplified to: That is, the total pressure = static pressure + dynamic pressure.

[0100] In the scenario where the guide ring of the aforementioned fan and guide device forms a horizontal, constant-height system, the static pressure at the annular outlet of the target fan is considered... If the value is 0, then the dynamic pressure needs to be calculated. Substitute the outlet velocity of the target fan's annular outlet obtained from the previous calculation into the dynamic pressure. This yields the dynamic pressure limit value of the system, i.e., the dynamic pressure limit value. .

[0101] For example, in some embodiments, the control module calculates the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density, specifically including the following steps S3151-S3155: S3151: Calculate the area of ​​the annular air outlet based on its radius.

[0102] For example, the annular air outlet is circular. Using the formula for calculating the area of ​​a circle, the radius of the annular air outlet is substituted into the formula to calculate the area of ​​the annular air outlet. .

[0103] S3152: Multiply the area of ​​the annular air outlet by the air density to obtain the first product.

[0104] S3153: Divide the thrust by the first product to obtain the first quotient.

[0105] Specifically, the area of ​​the annular air outlet Multiply by air density The first product is obtained, i.e., the first product. The thrust of the target wind turbine Divide by the first product The first quotient is obtained, that is, the first quotient. .

[0106] S3154: Calculate the outlet wind speed of the annular air outlet based on the first quotient.

[0107] S3155: Calculate the dynamic pressure limit value based on air density and outlet wind speed.

[0108] Specifically, the square root of the first quotient is taken to obtain the outlet velocity of the annular air outlet, which is also known as the outlet velocity of the annular air outlet. The outlet air velocity of the annular air outlet Squaring the result yields the first result. , the first result With air density Multiplying them together yields the second result. The second result Divide by 2 to obtain the dynamic pressure limit value. .

[0109] S316: Calculate the second capture coefficient based on the target pressure difference, the sum of the equivalent friction coefficients, and the dynamic pressure limit value.

[0110] Specifically, the dynamic pressure budget value of the air column guided to the target guide ring is calculated, and the second capture coefficient is preset to be... It can be understood that the first capture coefficient and the second capture coefficient are equal capture coefficients. However, for ease of understanding and explanation, these are distinguished as the first capture coefficient and the second capture coefficient in this embodiment of the invention. If the velocity distribution of the jet stream (i.e., the jet air output by the target fan) is approximately uniform, then the volumetric flow rate entering the target guide ring is calculated. Volumetric flow rate Divide by the area of ​​the target guide ring The average wind speed within the target guide ring is obtained. Similarly, according to Bernoulli's equation and the average wind speed within the target guide ring... The dynamic pressure budget value of the air column at the target guide ring section is calculated, i.e., the dynamic pressure budget value. And because of the dynamic pressure limit value Therefore, the dynamic pressure budget value It can be further simplified to Dynamic pressure budget value This can be understood as follows: for the air column entering the target guide ring, the dynamic pressure available for doing work is only the dynamic pressure budget value. That is, the value after being reduced by squared proportionally to the area.

[0111] It is easy to understand that, in the scenario of a horizontal, constant-height system for the fan and the guide ring of the guide device in this embodiment of the invention, the following can be determined: Total dynamic pressure = Static pressure + Pressure loss. Wherein, the dynamic pressure budget value of the target guide ring is... (i.e., the target flow guide ring inlet can use dynamic pressure), producing the target pressure difference. (That is, the static pressure that needs to be increased within the crossbar), consumption coefficient (i.e., the sum of equivalent friction coefficients) (Used for calculating allocation) The allocation formula for general ventilation or water conservancy series pipelines is as follows:

[0112] Dynamic pressure budget value Substituting into the above equation, we obtain the final functional relationship as follows:

[0113] In the above formula, the numerator represents the product of the dynamic pressure limit and the square of the capture efficiency (the square is because both fluid flow rate and target pressure difference are related to area), and the denominator represents the overall dimensionless resistance, that is, the energy loss resistance of the flow guiding device on the jet wind. The smaller the overall dimensionless resistance, the better. The result (i.e. This indicates that the target pressure difference is directly proportional to the flow efficiency and inversely proportional to the overall system resistance.

[0114] For example, based on the final functional relationship, the final functional relationship is transformed to obtain the second capture coefficient as follows, expressed by the formula:

[0115] That is, the second capture coefficient is calculated. .

[0116] For example, in some embodiments, the control module calculates the second capture coefficient based on the target pressure difference, the sum of equivalent friction coefficients, and the dynamic pressure limit value, specifically including the following steps S3161-S3164: S3161: Add the sum of the equivalent friction coefficients to the first preset value to obtain the first sum value.

[0117] S3162: Multiply the first sum by the target pressure difference to obtain the second product.

[0118] S3163: Divide the second product by the dynamic pressure limit value to obtain the second quotient.

[0119] S3164: Calculate the second capture coefficient based on the second quotient.

[0120] In this embodiment, the first preset value Sum of equivalent friction coefficients Compared with the first preset value Add them together to get the first sum, which is the first sum value. The first sum value Multiplying this by the target pressure difference yields the second product, i.e., the second product. Multiply the second product Divide by the dynamic pressure limit value The second quotient is obtained, that is, the second quotient. .

[0121] Finally, the second quotient Performing the square root operation yields the second capture coefficient, also known as the second capture coefficient. .

[0122] S317: Calculate the target distance based on the first acquisition coefficient and the second acquisition coefficient.

[0123] Specifically, after calculating the first and second capture coefficients, due to the target pressure difference... It is predetermined and obtained through numerical calculation. Value (i.e., the second capture coefficient), and based on the first capture coefficient As can be seen from the formula definition, the problem evolves into a known... Value (i.e.) (Value), solve for the target distance .

[0124] However, since the formula for calculating the overlapping area (i.e., formula (1)) is very complex, it cannot be directly simplified to... The target distance is calculated directly from the form of [formula / method]. This is because the formula for calculating the overlapping area contains both inverse trigonometric expressions and algebraic radicals. Equations that contain both inverse trigonometric expressions and algebraic radicals are called transcendental equations, and usually cannot be solved explicitly using finite elementary function operations.

[0125] Understandably, based on the first capture coefficient It can be seen that the first capture coefficient As the target distance It increases and monotonically decreases, that is, it increases with the target distance. Increase, overlapping area It gets smaller and smaller, thus the first capture coefficient It monotonically decreases from 1 to 0. This is easy to understand; the first capture coefficient... The target distance can be calculated as the distance monotonically decreases from 1 to 0. Therefore, a numerical method is used in engineering to determine the target distance because it has a unique solution. The solution methods can include the bisection method, Newton's iteration method, etc.

[0126] In some embodiments, the control module calculates the target distance based on the first acquisition coefficient and the second acquisition coefficient, specifically including the following steps S3171: S3171: Make the first acquisition coefficient and the second acquisition coefficient equal, and calculate the target distance.

[0127] Specifically, make the first capture coefficient and the second capture coefficient equal, that is, set the first capture coefficient... With the second capture coefficient If the values ​​are equal, substitute the known or solved parameter values ​​into the formula and calculate the target distance using numerical methods (such as the bisection method or Newton's iteration method). .

[0128] In some embodiments, the control module is further configured to perform the following step S330: S330: Calculate the target wind speed based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density.

[0129] In this embodiment of the invention, the target wind speed is the wind speed at the air inlet of the target cross passage, that is, the wind speed of the jet wind entering the air inlet.

[0130] Understandably, since the target pressure difference is the control result desired by the engineer, and waiting for feedback from the differential pressure gauge requires the entire cross passage to be pressurized, which takes a relatively long time. Therefore, another quick verification method can be used to check whether the pressure difference between the air inside and outside the cross passage (i.e., the target pressure difference) meets the standard. This involves activating the target airflow guide device and checking whether the air velocity at the air inlet of the target cross passage meets the standard. Therefore, it can also be calculated using the formula that when the target airflow guide ring moves to the target distance calculated above... The specific wind speed that should be achieved at the air inlet of the target crosswalk after (i.e., the working position) is determined.

[0131] For example, in some embodiments, the control module calculates the target wind speed based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density, specifically including the following steps S331-S333: S331: Multiply the target pressure difference by the first value to obtain the third product.

[0132] S332: Divide the third product by the air density to obtain the third quotient.

[0133] S333: Calculate the target wind speed based on the third quotient.

[0134] In this embodiment, the engineering allocation formula for the aforementioned ventilation or water conservancy series pipeline is used:

[0135] Transforming the above formula, we obtain the following formula: , The aforementioned dynamic pressure calculation formula Substituting, we get the formula. The following formula for calculating the target wind speed is obtained by deforming it:

[0136] In the above formula, The target wind speed, since the diameter of the target duct assembly is constant and air can be considered incompressible, is the wind speed that is constant throughout the duct. According to the formula for calculating the target wind speed, when the sum of the equivalent friction coefficients... Increase the target pressure difference (e.g., by lengthening the pipe or using a pipe with a higher coefficient of frictional resistance). (Right now If the target wind speed remains constant, then the required wind speed is... It must be higher in order to maintain the target pressure difference between the air inside and outside the cross passage.

[0137] In this embodiment of the invention, the first value is the product of a second preset value and a third preset value, and the third preset value is the sum of the first preset value and the equivalent friction coefficient. The first preset value... , set the first preset value Sum of equivalent friction coefficients Adding them together yields the third preset value, which is the third preset value. Second preset value , set the second preset value With the third preset value Multiplying them together gives us the first value, which is the first value. Target pressure difference (Right now ) and the first value Multiplying them together yields the third product, which is the third product. The third product Divide by air density The third quotient is obtained, that is, the third quotient. .

[0138] Finally, the third quotient Perform the square root operation to obtain the target wind speed, i.e., the target wind speed. .

[0139] Case calculation: The cross passage is equipped with normally closed fire doors at both ends. Above the fire door at one end of the cross passage, there is a hole (i.e., an air inlet) with a diameter of 0.8m in the dome wall. The hole (i.e., the air inlet) is used for air supply.

[0140] The aforementioned opening (i.e., the air inlet) connects to a rigid ventilation duct of 0.8m diameter made of stainless steel or PP outside the crossbeam. The rigid ventilation duct includes two right-angle bends with guide vanes, and the resistance coefficient of each right-angle bend is... Rigid ventilation ducts have low air resistance, with a friction resistance coefficient of 0.015. The maximum length of rigid ducts is 30m or 60m.

[0141] The rigid ventilation duct is connected to a flexible, expandable ventilation duct with a diameter of 0.8m. The flexible ventilation duct is 5m long, has a friction resistance coefficient of 0.04, and has no bends.

[0142] The guide ring of the flow guiding device is circular with a diameter of 0.8m. The diameter of the annular outlet of the jet fan is 1m, the thrust (F) output by the jet fan is 2000N, and the air density is taken as 1.2 kg / m³ (i.e., Assume that the air pressure inside and outside the cross passage measured at both ends of the differential pressure gauge is initially the same atmospheric pressure, and ignore leakage issues such as door gaps.

[0143] The required values ​​are: 1) When the target pressure difference reaches 25 Pa, the target distance (i.e., the distance between the center of the guide ring and the center of the annular outlet of the fan) and the target wind speed (i.e., the wind speed at the inlet of the cross passage); 2) When the target pressure difference reaches 50 Pa, the target distance (i.e., the distance between the center of the guide ring and the center of the annular outlet of the fan) and the target wind speed (i.e., the wind speed at the inlet of the cross passage).

[0144] Calculation results: For cases where the maximum length of the rigid ventilation duct is 30m: When the center of the guide ring completely coincides with the center of the annular air outlet (i.e., the target distance) When the pressure difference between the air inside and outside the cross passage is at its maximum, the difference is approximately: .

[0145] when At that time, calculations show that the distance between the center of the guide ring and the center of the annular air outlet (i.e., the target distance) is approximately: Target wind speed .

[0146] when At that time, calculations show that the distance between the center of the guide ring and the center of the annular air outlet (i.e., the target distance) is approximately: Target wind speed .

[0147] For cases where the maximum length of the rigid ventilation duct is 60m: When the center of the guide ring completely coincides with the center of the annular air outlet (i.e., the target distance) When the pressure difference between the air inside and outside the cross passage is at its maximum, the difference is approximately: .

[0148] when At that time, calculations show that the distance between the center of the guide ring and the center of the annular air outlet (i.e., the target distance) is approximately: Target wind speed .

[0149] when At that time, calculations show that the distance between the center of the guide ring and the center of the annular air outlet (i.e., the target distance) is approximately: Target wind speed .

[0150] Please see Figure 6 , Figure 6 The distance between the center of the guide ring and the center of the annular air outlet in some embodiments of the present invention is shown. (i.e., target distance) (and target pressure difference) (Right now Based on the correspondence between the two, it can be seen that the electromechanical equipment control system provided in this embodiment of the invention can accurately control the flow guiding device to be in a suitable working position, thereby guiding the jet air output by the fan to the cross passage, so that the air inside the cross passage and the air outside the cross passage have a suitable pressure difference, thereby reducing or avoiding smoke intrusion into the cross passage and reducing the possibility of personal safety being threatened by the personnel inside the cross passage.

[0151] In summary, the tunnel electromechanical equipment control system provided by this invention acquires environmental data within the tunnel through an environmental sensing module. Based on this data, it determines the location of the accident triggering a smoke alarm within the tunnel. Then, it identifies the target fan in the fan module based on the target location corresponding to the accident site. A target airflow guiding device directs the jet air output from the target fan to the target cross passage, thereby reducing or preventing smoke from entering the target cross passage and lowering the likelihood of threats to the personal safety of personnel within the target cross passage. This system can adapt to sudden changes in the tunnel environment caused by accidents such as fires and smoke alarms, improving the intelligence and adaptability of the electromechanical equipment control system and reducing safety risks in tunnel operation and management. Furthermore, the tunnel electromechanical equipment control system provided by this invention utilizes the airflow from the fan in the opposite tunnel to deliver air to the escape passage (cross passage) near the accident site, reducing or even preventing smoke from intruding into the personnel escape passage. This control system only requires the installation of airflow guiding devices (including slide rails, pipes, and airflow guiding rings), making construction simple, cost-effective, and highly practical.

[0152] Those skilled in the art will understand that the embodiments provided by this invention are merely illustrative. The order in which the steps in the methods of the embodiments are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The order can be adjusted, merged, and deleted according to actual needs. Modules or sub-modules, units or sub-units in the apparatus or system of the embodiments can be merged, divided, and deleted according to actual needs. For example, the division of units is only a logical functional division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0153] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software and a general-purpose hardware platform, or it can be implemented using hardware. Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This computer program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. It should be understood that the storage medium can be flash memory, hard disk, optical disk, register, magnetic surface memory, removable disk, random access memory (RAM), CD-ROM, read-only memory (ROM), electrically programmable ROM, and electrically erasable programmable ROM, etc.

[0154] It should be noted that the above embodiments are for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can understand that all or part of the processes of the above embodiments can be implemented by modifying the technical solutions described in the embodiments of the present invention, or by making equivalent substitutions for some of the technical features. It is understood that these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should be considered as equivalent changes and modifications made based on the embodiments of the present invention, all of which should fall within the scope of the claims of the present invention.

Claims

1. A control system for electromechanical equipment in a tunnel, characterized in that, include: The control module, and the environmental sensing module, the fan module, and the flow guiding module that are communicatively connected to the control module; The environmental sensing module is configured to collect environmental data in the first tunnel and the second tunnel, and send the environmental data to the control module. At least one cross passage is provided between the first tunnel and the second tunnel, and air inlets are provided on both sides of the cross passage. The environmental data includes image data and sensor data, and the sensor data includes light intensity and gas concentration. The fan module includes multiple fans, wherein the fans are disposed at the top of the first tunnel and the second tunnel, and the fans are configured to output jet air; The flow guiding module includes multiple flow guiding devices, which are located in the first tunnel and the second tunnel. Each flow guiding device corresponds to one fan and one cross passage. The first end of the flow guiding device is positioned towards the annular air outlet of the fan, and the second end of the flow guiding device is connected to the air inlet of the cross passage. The control module is communicatively connected to both the fan and the flow guiding device, and the control module is configured to: Based on the environmental data, a target location is determined. The target location is used to characterize the accident site where the smoke alarm is generated. The tunnel where the target location is located is the tunnel on this side. The tunnels other than the tunnel on this side in the first tunnel and the second tunnel are the tunnels on the opposite side. Based on the target location, a target fan is determined. The target fan is a fan installed in the opposite tunnel and located downstream of the target location. The downstream direction is referenced by the wind direction of the fan in the tunnel on this side. The target flow guiding device is activated to guide the jet air output by the target fan to the target cross channel, which is the cross channel closest to the target fan, and the target flow guiding device is a flow guiding device connected to the air inlet of the target cross channel.

2. The electromechanical equipment control system according to claim 1, characterized in that, The flow guiding device includes a slide rail, a flow guiding ring, and a pipe assembly. The slide rail is fixed to the wall of the first tunnel and the second tunnel near the cross passage and is at the same horizontal height as the reference fan. The reference fan is the fan closest to the cross passage among the plurality of fans. The flow guiding ring is embedded in the slide rail. The first end of the pipe assembly is connected and fixed to the outlet of the flow guiding ring. The inlet of the flow guiding ring is set towards the annular air outlet of the reference fan. The second end of the pipe assembly is connected and fixed to the air inlet. The target flow guiding device comprises a slide rail, a flow guiding ring, and a pipe assembly, respectively. The control module controls the target flow guiding device to start operation, causing the target flow guiding device to guide the jet air output by the target fan to the target cross channel, including: Based on the target parameters and the target pressure difference, the working position is calculated, wherein the target parameters represent the parameters that affect the energy of the jet wind guided by the target flow guiding device, the target pressure difference represents the pressure difference between the air inside the target cross passage and the air outside, and the working position is the position where the target flow guiding ring is located on the target slide rail; The target slide rail is controlled to move along a first direction to move the target guide ring to the working position, so that the target guide ring guides the jet air output by the target fan to the target pipe assembly, and the jet air is delivered to the target cross passage through the target pipe assembly. The first direction is the direction from the wall of the opposite tunnel horizontally to the target fan.

3. The electromechanical equipment control system according to claim 2, characterized in that, The target distance between the center of the target guide ring and the center of the annular air outlet represents the working position. The control module calculates the working position based on the target parameters and the target pressure difference, including: Obtain the target pressure difference; The target parameters are obtained, wherein the target parameters include a first parameter, a second parameter and a third parameter. The first parameter includes the radius of the target guide ring and the sum of the equivalent friction coefficients of the target pipe assembly. The second parameter includes the thrust of the target fan and the radius of the annular air outlet of the target fan. The third parameter includes the air density. The overlapping area is calculated based on the radius of the target guide ring, the radius of the annular air outlet, and the target distance. The overlapping area is the area of ​​overlap between the target guide ring and the annular air outlet. The first capture coefficient is calculated based on the overlapping area and the radius of the target guide ring; Calculate the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density; The second capture coefficient is calculated based on the target pressure difference, the sum of the equivalent friction coefficients, and the dynamic pressure limit value. The target distance is calculated based on the first capture coefficient and the second capture coefficient.

4. The electromechanical equipment control system according to claim 3, characterized in that, The control module calculates a first capture coefficient based on the overlapping area and the radius of the target guide ring, including: Calculate the area of ​​the target guide ring based on its radius; The first capture coefficient is obtained by dividing the overlapping area by the area of ​​the target guide ring.

5. The electromechanical equipment control system according to claim 3, characterized in that, The control module calculates the dynamic pressure limit value based on the thrust, the radius of the annular air outlet, and the air density, including: Calculate the area of ​​the annular air outlet based on its radius; Multiply the area of ​​the annular air outlet by the air density to obtain the first product; Divide the thrust by the first product to obtain the first quotient; Based on the first quotient, calculate the outlet wind speed of the annular air outlet; The dynamic pressure limit value is calculated based on the air density and the outlet wind speed.

6. The electromechanical equipment control system according to any one of claims 3-5, characterized in that, The control module calculates a second capture coefficient based on the target pressure difference, the sum of the equivalent friction coefficients, and the dynamic pressure limit value, including: The sum of the equivalent friction coefficients is added to a first preset value to obtain a first sum value; Multiply the first sum by the target pressure difference to obtain the second product; Divide the second product by the dynamic pressure limit value to obtain the second quotient; The second capture coefficient is calculated based on the second quotient.

7. The electromechanical equipment control system according to claim 6, characterized in that, The control module calculates the target distance based on the first acquisition coefficient and the second acquisition coefficient, including: The target distance is calculated by making the first capture coefficient and the second capture coefficient equal.

8. The electromechanical equipment control system according to claim 3, characterized in that, The control module is also configured to: The target wind speed is calculated based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density. The target wind speed is the wind speed at the air inlet of the target cross passage.

9. The electromechanical equipment control system according to claim 8, characterized in that, The control module calculates the target wind speed based on the target pressure difference, the sum of the equivalent friction coefficients, and the air density, including: Multiply the target pressure difference by the first value to obtain a third product. The first value is the product of the second preset value and the third preset value. The third preset value is the sum of the first preset value and the equivalent friction coefficient. Divide the third product by the air density to obtain the third quotient; The target wind speed is calculated based on the third quotient.

10. The electromechanical equipment control system according to any one of claims 3, 8, and 9, characterized in that, The pipe assembly includes a rigid pipe, a flexible pipe, and a connecting elbow. The first end of the flexible pipe is fixedly connected to the outlet of the guide ring, and the second end of the flexible pipe is fixedly connected to the first end of the rigid pipe. The connecting elbow is embedded in the air inlet, and the second end of the rigid pipe is fixedly connected to the first end of the connecting elbow. The second end of the connecting elbow is fixedly connected to the air inlet. Wherein, the rigid pipe, flexible pipe, and connecting elbow of the target pipe assembly are respectively the target rigid pipe, the target flexible pipe, and the target connecting elbow. The control system obtains the sum of the equivalent friction coefficients of the target pipe assembly, including: Obtain the first standard parameters of the target rigid pipe, the second standard parameters of the target flexible pipe, and the resistance coefficient of the target connecting elbow. The first standard parameters include the friction resistance coefficient, length, and diameter of the target rigid pipe, and the second standard parameters include the friction resistance coefficient, length, and diameter of the target flexible pipe. Based on the first standard parameter, the second standard parameter, and the resistance coefficient, the sum of the equivalent friction coefficients of the target pipe assembly is calculated.

11. The electromechanical equipment control system according to claim 10, characterized in that, The control system calculates the sum of the equivalent friction coefficients of the target pipe assembly based on the first standard parameter, the second standard parameter, and the resistance coefficient, including: Multiply the frictional resistance coefficient of the target rigid pipe by the length of the target rigid pipe to obtain the fourth product; Divide the fourth product by the diameter of the target rigid pipe to obtain the fourth quotient. Multiply the frictional resistance coefficient of the target flexible pipe by the length of the target flexible pipe to obtain the fifth product; Divide the fifth product by the diameter of the target rigid pipe to obtain the fifth quotient. The fourth quotient, the fifth quotient, and the resistance coefficient are added together to obtain the total equivalent friction coefficient.

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