Fire damper response speed test method

Abstract

The present application is applicable to the technical field of fire dampers, and particularly relates to a fire damper response speed testing method, which includes: obtaining usage scenario information; matching corresponding test parameters based on the usage scenario information; a control device controlling a heat source device to ventilate toward a first valve port based on the test parameters for a preset time, and obtaining a fusible link image in real time; analyzing multiple fusible link images to obtain a thermal response speed; a control device controlling a heat source device to ventilate toward a second valve port based on the test parameters until the blade is closed, and obtaining a fire damper image in real time; analyzing multiple fire damper images to obtain a mechanical response speed; and integrating the thermal response speed and the mechanical response speed to obtain a fire damper response parameter. This method implements a multi-dimensional response analysis of the fire damper, and can specifically collect test data on the fire damper's response speed, thereby improving the accuracy and reliability of the fire damper response speed assessment.

Description

Technical Field

[0001] The present application belongs to the technical field of fire dampers, and in particular relates to a method for testing the response speed of a fire damper. Background Art

[0002] Fire dampers are key components in modern building fire protection systems, and their performance directly impacts both personal safety and property damage in the event of a fire. Fire dampers are typically installed on the supply and return air ducts of ventilation and air conditioning systems. Under normal operating conditions, they remain open to ensure smooth ventilation system operation. However, once a fire breaks out, when the smoke temperature in the duct reaches a specific threshold (e.g., 70°C, a common temperature in ventilation systems, or 280°C in smoke exhaust systems), the fire dampers must rapidly close, ensuring smoke leakage and fire integrity within a specified timeframe. This crucial barrier effectively prevents the spread of fire and smoke through the ventilation ducts, buying valuable time for evacuation and fire rescue efforts.

[0003] In existing technology, testing the response speed of fire dampers typically involves placing the damper in a test environment and heating it at a constant rate using a heating device. Simultaneously, the time it takes for the fusible link to melt and the time it takes for the blade to close are recorded through manual observation or more basic sensor equipment, and this is used as test data for the fire damper's response speed. However, in actual fires, the ventilation duct layout and spatial structure vary across different building types (such as high-rise office buildings, underground parking lots, and large commercial complexes). The thermal airflow generated by the fire is affected by the building structure and obstacles, resulting in a high degree of uncertainty in its rate of temperature rise, wind speed, and direction. For example, in a narrow underground passage, the thermal airflow may generate higher wind speeds due to the passage structure, and the temperature rise rate will also differ significantly from that in open spaces. Therefore, traditional testing methods are unable to meet the requirements of modern building fire protection for high-precision fire damper performance evaluation. Summary of the Invention

[0004] The embodiments of the present application provide a fire damper response speed testing method and device, which can solve the problem that traditional testing methods are difficult to meet the requirements of modern building fire protection for high-precision performance evaluation of fire dampers.

[0005] In a first aspect, an embodiment of the present application provides a method for testing the response speed of a fire damper, comprising:

[0006] Obtaining usage scenario information; wherein the usage scenario information is used to reflect the environment in which the fire damper is actually used in operation;

[0007] Matching corresponding test parameters based on the usage scenario information; wherein the test parameters are used to reflect the heating rate and wind speed of the hot air and the response temperature;

[0008] The control device controls the heat source device to ventilate toward the first valve port for a preset time based on the test parameters, and acquires an image of the fusible link in real time; wherein the first valve port refers to the port on the side of the blade away from the fusible link, and the time corresponding to the preset time is greater than the time corresponding to the time when the hot air output by the heat source device is heated to the response temperature at the heating rate;

[0009] Analyzing the plurality of images of the fusible sheet to obtain a thermal response speed;

[0010] The control device controls the heat source device to ventilate toward the second valve port based on the test parameters until the blades are closed, and acquires a fire damper image in real time; wherein the second valve port is a port adjacent to the first valve port and located on the side of the fusible link, and the fire damper image is used to reflect the status of the fusible link and the blades;

[0011] Analyzing the plurality of fire damper images to obtain a mechanical response speed;

[0012] The thermal response speed and the mechanical response speed are integrated to obtain a fire damper response parameter; wherein the fire damper response parameter is used to indicate a combination of the thermal response speed and the mechanical response speed.

[0013] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: by obtaining usage scenario information for reflecting the environment in which the fire damper is actually used in operation, and matching corresponding test parameters for reflecting the heating rate and wind speed of hot air and the response temperature based on the usage scenario information, the test environment can be close to the actual one, and the measured response speed data has a very high reference value; then, the control device controls the heat source device to ventilate toward the first valve port of the port on the side of the blade away from the fusible link for a preset time based on the test parameters, and obtains the fusible link image in real time; then, the thermal response speed is obtained based on the analysis of multiple fusible link images, which helps to gain a deeper understanding of the thermal response characteristics of the fusible link and provides scientific data for the response speed evaluation of the fire damper during an actual fire. According to the reference; the control device then controls the heat source device to ventilate toward the second valve port adjacent to the first valve port and on the side where the fusible link is located based on the test parameters until the blade is closed, and obtains a fire damper image reflecting the status of the fusible link and the blade in real time; then, analysis is performed based on multiple fire damper images to obtain the mechanical response speed; finally, the thermal response speed and the mechanical response speed are confirmed as fire damper response parameters. This method analyzes the hot-melt characteristics of the fusible link and the mechanical characteristics of the connection between the fusible link and the blade, as well as the response characteristics of the blade itself through multi-level output, thereby realizing multi-dimensional response analysis of the fire damper, and can specifically collect test data on the response speed of the fire damper, thereby improving the accuracy and reliability of the evaluation of the response speed of the fire damper.

[0014] In a possible implementation of the first aspect, analyzing the plurality of fusible sheet images to obtain a thermal response speed includes:

[0015] Extracting temporal features from the plurality of images of the fusible link to obtain a spatiotemporal feature chain; wherein the spatiotemporal feature chain is used to reflect the state of the shape of the fusible link changing over time;

[0016] The thermal response speed is obtained by analyzing the spatiotemporal characteristic chain.

[0017] In a possible implementation of the first aspect, analyzing according to the spatiotemporal characteristic chain to obtain a thermal response speed includes:

[0018] The spatiotemporal characteristic chain is divided according to the time point at which the fusible link deforms, to obtain a static deformation response chain and a dynamic deformation response chain; wherein the static deformation response chain is located before the time point at which the fusible link deforms, and the dynamic deformation response chain is located after the time point at which the fusible link deforms;

[0019] The duration of the deformation static response chain is used as the static response time;

[0020] Analyze the deformation dynamic response chain to obtain a dynamic response rate;

[0021] The thermal response speed is obtained by analyzing the static response time and the dynamic response rate.

[0022] In a possible implementation of the first aspect, analyzing the deformation dynamic response chain to obtain a dynamic response rate includes:

[0023] Analyzing the deformation dynamic response chain to obtain deformation information; wherein the deformation information is used to reflect the deformation of the fusible link from the occurrence of deformation to the preset time;

[0024] The deformation information is analyzed based on the heating time to obtain a dynamic response rate.

[0025] In a possible implementation of the first aspect, analyzing the deformation information based on the heating time to obtain a dynamic response rate includes:

[0026] The deformation information is divided into stages based on the heating time to obtain a first deformation stage and a second deformation stage; wherein the first deformation stage is used to reflect the deformation of the fusible piece from the time point when the deformation occurs to the time point when the hot air output by the heat source device reaches the response temperature, and the second deformation stage is used to reflect the deformation of the fusible piece from the time point when the hot air output by the heat source device reaches the response temperature to the time when the preset time is reached;

[0027] Analyzing the first deformation stage to obtain a first deformation rate; wherein the first deformation rate is used to reflect the maximum rate of deformation of the fusible link;

[0028] Analyzing the second deformation stage to obtain a second deformation rate; wherein the second deformation rate is used to reflect the average rate of deformation of the fusible piece;

[0029] A dynamic response rate is obtained based on the first deformation rate and the second deformation rate.

[0030] In a possible implementation of the first aspect, obtaining a dynamic response rate based on the first deformation rate and the second deformation rate includes:

[0031] A first weight is obtained based on a first time ratio corresponding to the first deformation rate; wherein the first time ratio is used to indicate a ratio of the time from the time when the fusible link is deformed to the time when the hot air output by the heat source device reaches the response temperature to the time from the time when the fusible link is deformed to the time when the hot air reaches the preset temperature;

[0032] A second weight is obtained based on a second time ratio corresponding to the second deformation rate; wherein the second time ratio is used to indicate the ratio of the time from the time when the hot air output by the heat source device reaches the response temperature to the time when the hot air reaches the preset time to the time from the time when the deformation occurs to the time when the preset time is reached;

[0033] The first deformation rate is weighted based on the first weight, and the second deformation rate is weighted based on the second weight, and the sum of the weights is used to obtain a dynamic response rate.

[0034] In a possible implementation of the first aspect, analyzing according to the static response time and the dynamic response rate to obtain the thermal response speed includes:

[0035] Analyze the static response time to obtain a thermal response coefficient;

[0036] The dynamic response rate is corrected based on the thermal response coefficient to obtain a thermal response speed.

[0037] In a possible implementation of the first aspect, analyzing the plurality of fire damper images to obtain a mechanical response speed includes:

[0038] Analyzing the plurality of fire damper images to obtain fusible link response information and blade response information; wherein the fusible link response information is used to reflect the time from when the fusible link begins to be heated to when it melts, and the blade response information is used to reflect the time from when the fusible link melts to when the blade is fully closed;

[0039] The mechanical response speed is obtained by analyzing the fusible link response information and the blade response information.

[0040] In a possible implementation of the first aspect, analyzing the fusible link response information and the blade response information to obtain the mechanical response speed includes:

[0041] Accumulate the time of the fusible piece response information and the blade response information to obtain a total operating time;

[0042] A mechanical response speed is obtained based on the total operating time.

[0043] In a possible implementation of the first aspect, obtaining the mechanical response speed based on the total operating time includes:

[0044] Performing redundancy matching based on the test parameters to obtain a redundancy coefficient;

[0045] The total operating time is corrected based on the redundancy coefficient and used as the mechanical response speed.

[0046] In a second aspect, an embodiment of the present application provides a fire damper response speed testing system, comprising:

[0047] An acquisition module is used to acquire usage scenario information; wherein the usage scenario information is used to reflect the environment in which the fire damper is actually used in operation;

[0048] A matching module, configured to match corresponding test parameters based on the usage scenario information; wherein the test parameters are used to reflect the heating rate and wind speed of the hot air and the response temperature;

[0049] A first control acquisition module is configured to control the heat source device to ventilate toward the first valve port based on the test parameters for a preset time, and to acquire an image of the fusible link in real time; wherein the first valve port refers to the port on the side of the blade away from the fusible link, and the preset time corresponds to a time greater than the time corresponding to the hot air output by the heat source device being heated to the response temperature at the heating rate;

[0050] A first analysis module is configured to analyze the plurality of fusible sheet images to obtain a thermal response speed;

[0051] a second control acquisition module, configured for the control device to control the heat source device to ventilate toward the second valve port based on the test parameters until the blades are closed, and to acquire a fire damper image in real time; wherein the second valve port is a port adjacent to the first valve port and located on the side of the fusible link, and the fire damper image is used to reflect the status of the fusible link and the blades;

[0052] a second analysis module, configured to analyze the plurality of fire damper images to obtain a mechanical response speed;

[0053] An integration module is used to integrate the thermal response speed and the mechanical response speed to obtain a fire damper response parameter; wherein the fire damper response parameter is used to indicate a combination of the thermal response speed and the mechanical response speed.

[0054] In a third aspect, an embodiment of the present application provides a fire damper response speed testing device, comprising a heat source device and a control device, wherein the control device is electrically connected to the heat source device, and the control device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the methods described in the first aspect above when executing the computer program.

[0055] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the above-mentioned first aspects is implemented.

[0056] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a fire damper response speed testing device, the fire damper response speed testing device performs the fire damper response speed testing method described in any one of the first aspects above.

[0057] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0059] Figure 1 1 is a flow chart of a fire damper response speed testing method provided in an embodiment of the present application;

[0060] Figure 2 Schematic diagram of the implementation flow of the fire damper response speed testing method provided in an embodiment of the present application;

[0061] Figure 3 Schematic diagram of the fire damper response speed testing system provided in an embodiment of the present application;

[0062] Figure 4Schematic diagram of the structure of the control device of the fire damper response speed testing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0063] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0064] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0065] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0066] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if the described condition or event is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of the described condition or event" or "in response to detecting the described condition or event," depending on the context.

[0067] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0068] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0069] In existing technology, testing the response speed of fire dampers typically involves subjecting the dampers to a fixed, standard test environment, using uniform heating rates and wind speed parameters. This typically involves heating the dampers at a constant heating rate using a simple heating device, while simultaneously recording the time it takes for the fusible link to melt and the time it takes for the blades to close, either manually or through relatively basic sensor equipment.

[0070] This testing method has many limitations. On the one hand, because the test environment is single and idealized, it differs significantly from the complex and changeable working conditions in actual fire scenarios. When an actual fire occurs, the ventilation duct layout and spatial structure of different building types (such as high-rise office buildings, underground parking lots, large commercial complexes, etc.) are different. The hot air flow generated by the fire is affected by the building structure and obstacles, and its temperature rise rate, wind speed and direction are highly uncertain. For example, in a long and narrow underground passage, the hot air flow may form a higher wind speed due to the passage structure, and the temperature rise rate will also be significantly different from that in an open space. However, existing testing methods have difficulty simulating these complex actual working conditions, resulting in the response speed data obtained from the test being unable to accurately reflect the performance of fire dampers in real fires.

[0071] On the other hand, existing detection methods mostly use simple time calculation methods, focusing only on the total time from the start of heating to the closing of the blades. There is a lack of in-depth analysis of the thermal response process of the fusible link and the mechanical response process of the blades. It is impossible to clarify the correlation between the thermal response and the mechanical response, as well as the degree of their respective contributions to the overall response speed. It is difficult to meet the needs of modern building fire protection for high-precision performance evaluation of fire dampers.

[0072] In order to solve the above problems, the embodiment of the present application provides a fire damper response speed test method. In this method, by obtaining usage scenario information for reflecting the environment in which the fire damper is actually used, and matching the corresponding test parameters for reflecting the heating rate and wind speed of hot air and the response temperature based on the usage scenario information, the test environment can be close to the actual one, and the measured response speed data has a very high reference value; then, the control device controls the heat source device to ventilate the first valve port of the port on the side of the blade away from the fusible link to a preset time based on the test parameters, and obtains the fusible link image in real time; then, based on multiple fusible link images, the thermal response speed is obtained, which helps to gain a deeper understanding of the thermal response characteristics of the fusible link and provides a scientific data reference for the response speed evaluation of the fire damper during an actual fire; then, by controlling The device controls the heat source device to ventilate toward the second valve port adjacent to the first valve port and on the side where the fusible link is located until the blade is closed based on the test parameters, and obtains a fire damper image reflecting the status of the fusible link and the blade in real time; then, analysis is performed based on multiple fire damper images to obtain a mechanical response speed; finally, the thermal response speed and the mechanical response speed are confirmed as fire damper response parameters. This method analyzes the thermal melting characteristics of the fusible link, the mechanical characteristics of the connection between the fusible link and the blade, and the response characteristics of the blade itself through multi-level output, thereby realizing a multi-dimensional response analysis of the fire damper and being able to specifically collect test data on the response speed of the fire damper, thereby improving the accuracy and reliability of the evaluation of the response speed of the fire damper.

[0073] The fire damper response speed testing method provided in the embodiment of the present application can be applied to a fire damper response speed testing device. In this case, the fire damper response speed testing device is the executor of the fire damper response speed testing method provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of the fire damper response speed testing device.

[0074] For example, fire damper response speed testing equipment may include a heat source device and a control device, with the control device electrically connected to the heat source device. The heat source device is used to provide an installation environment for testing the fire damper's response speed and for performing ventilation tests on the fire damper. The heat source device may include a placement device and an air supply device. The placement device is used to secure the fire damper and provide a stable testing installation environment. The placement device may adopt a modular design, including an adjustable fixing fixture and a calibration platform. The fixing fixture can adapt to fire dampers of different specifications and models and is securely fixed using bolts or clips. The calibration platform is equipped with an adjustment knob to ensure that the fire damper is in a suitable installation state, allowing the fire damper to be tested. The air supply device is used to generate hot air that meets the test parameter requirements for ventilation testing of the fire damper. It mainly consists of an air heating system, an air speed adjustment system, and an air flow guidance system. The air heating system can utilize efficient electric heating wires or infrared heating elements, combined with an intelligent temperature control module, to precisely control the heating rate and response temperature of the hot air. The wind speed regulation system, equipped with a variable-frequency fan and wind speed sensor, adjusts the wind speed by controlling the fan speed and provides real-time feedback to ensure the output wind speed remains within the test parameters. The airflow guidance system consists of a deflector, air duct, and air outlet. The deflector adjusts the direction and diffusion angle of the hot air. The air duct features a smooth inner wall design to reduce airflow resistance. The shape and size of the air outlet are optimized to evenly blow the hot air toward the first and second valve ports of the fire damper, simulating the airflow conditions in a real fire scenario. A control device monitors and controls the entire test process.

[0075] For example, the control device can be a terminal device such as a mobile phone, a tablet computer, a wearable device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a desktop computer, a smart screen, a smart TV, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an Internet of Things terminal, a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite wireless device, a wireless modem card, a TV set-top box (STB), a customer premises equipment (CPE) and / or other devices for communicating on a wireless system and a next-generation communication system, such as a mobile terminal in a 5G network or a mobile terminal in a future evolved public land mobile network (PLMN).

[0076] In order to better understand the fire damper response speed testing method provided in the embodiment of the present application, the specific implementation process of the fire damper response speed testing method provided in the embodiment of the present application is exemplarily introduced below.

[0077] Figure 1 and Figure 2 A schematic flow chart of a fire damper response speed testing method provided in an embodiment of the present application is shown. The fire damper response speed testing method includes:

[0078] S100, obtaining usage scenario information; wherein the usage scenario information is used to reflect the environment in which the fire damper is actually used in operation.

[0079] It's understandable that usage scenario information encompasses a variety of factors, such as the building type (e.g., residential, commercial, industrial, etc.) where the fire damper is installed, the specific building area (floor, pipe routing, etc.), and the potential fire types (e.g., differences in smoke and heat environments caused by Class A solid fires and Class B liquid fires). These factors directly impact the flow of hot air around the fire damper during actual operation, the rate of temperature rise, and the maximum temperature achieved. Usage scenario information can be manually entered or retrieved from a test database, among other sources. The test database contains information on all fire damper specifications and corresponding locations. This data can be obtained through laboratory experiments, field measurements and monitoring, and historical experience. Once collected, the data is organized, categorized, and archived to extract useful information and patterns. The relevant data is then stored in a database to form the test database.

[0080] S200, matching corresponding test parameters based on usage scenario information; wherein the test parameters are used to reflect the heating rate and wind speed of the hot air and the response temperature.

[0081] It can be understood that different usage scenario information corresponds to a test parameter. The response temperature refers to the critical temperature point at which the fusible link in the fire damper will undergo physical changes such as melting when it senses changes in the external thermal environment and reaches a specific temperature value, thereby triggering the fire damper to close. It is also the extreme point at which the hot air output by the heat source device rises in temperature during the test. Generally speaking, the response temperature is usually 70°C or 280°C. For example, the corresponding test parameters can be obtained by matching the usage scenario information in the test database; the usage scenario information can also be input into the learning model, and the learning model then outputs the corresponding test parameters, etc., but is not limited to this. The learning model is trained with multiple sets of training data, and each set of training data in the multiple sets of training data includes usage scenario information and corresponding test parameters.

[0082] S300, the control device controls the heat source device to ventilate toward the first valve port based on the test parameters for a preset time, and obtains the image of the fusible link in real time; wherein, the first valve port refers to the port on the side of the blade away from the fusible link, and the moment corresponding to the preset time is greater than the moment corresponding to the hot air output by the heat source device being heated to the response temperature at a heating rate.

[0083] As you can understand, a fire damper primarily consists of a valve body, a blade, an actuator, and a fusible link. The valve body can be a rectangular or circular frame. The blade, mounted within the valve body, is a key component controlling airflow and closing the blade. It is typically made of thin metal sheet and can rotate around an axis. During normal ventilation, the blade is open, dividing the valve opening into two left and right channels, allowing air to flow smoothly through the two openings formed by the blade and the valve body. The actuator controls the movement of the blade and is available in either manual or automatic modes. Manual actuators facilitate manual opening and closing of the blade during installation, commissioning, and maintenance inspections; automatic actuators play a key role in the event of a fire. When the fusible link melts or receives a fire control signal, the automatic actuator mechanically or electrically drives the blade to close quickly. Electric actuators typically consist of a motor, gears, connecting rods, and other components, converting electrical energy into mechanical energy to achieve blade movement. Some actuators also feature a signal feedback device to provide feedback on the valve's open or closed status to the fire control system. The fusible link is the temperature-sensing element of the fire damper and is typically made of a low-melting-point alloy. The fusible link is installed in the actuator or at a location connected to the blade. It's located in one of the two channels that divide the valve opening into left and right when the blade is open. When the fusible link is in the left channel, the right channel becomes the first valve opening; when the fusible link is in the right channel, the left channel becomes the first valve opening. When the heat source device outputs air, there's a certain distance between its outlet and the fire damper. This distance can be determined through laboratory experiments, on-site measurements and monitoring, and historical experience. When air is ventilated toward the first valve opening, the fusible link is heated by air flow and heat exchange, and as the air temperature rises, it deforms to a certain extent.

[0084] The preset time refers to the time when the heat source device ventilates toward the first valve port. The moment corresponding to the preset time is greater than the moment corresponding to the time when the hot air output by the heat source device is heated to the response temperature at the heating rate, which means that when the heat source device ventilates toward the first valve port until the heating temperature reaches the response temperature, it continues to ventilate toward the first valve port until the preset time ends. Therefore, the time taken for the hot air output by the heat source device to be heated to the response temperature at the heating rate is less than the preset time. The preset time is a pre-set time value, which can be manually input, or obtained from a test database, etc., but is not limited to this. The image of the fusible piece can be obtained by an imaging device such as a camera.

[0085] S400: Analyze the plurality of fusible element images to obtain a thermal response speed.

[0086] It is understood that by processing and analyzing multiple images of the fusible link taken at different times, it is possible to capture the changes in the fusible link from initial heating to deformation and ultimate melting. Image processing algorithms can be used to identify features such as the position, shape, and color of the fusible link in the image, and analyze how these features change over time. Alternatively, the fusible link images can be input into a learning model, which can then output the corresponding thermal response speed, and so on, but not limited to these.

[0087] In one possible implementation, in step S400, analyzing the plurality of fusible sheet images to obtain a thermal response speed includes:

[0088] S410 , extracting temporal features based on the plurality of fusible link images to obtain a spatiotemporal feature chain; wherein the spatiotemporal feature chain is used to reflect the state of the shape of the fusible link changing over time.

[0089] For example, image analysis techniques can be used to sequentially process multiple fusible link images acquired in chronological order. Shape features, such as the outline and edges of the fusible link, are extracted from each image. These features are then arranged and combined in chronological order to form a sequence that reflects the state of the fusible link at different times, i.e., a spatiotemporal feature chain.

[0090] S420, analyzing the spatiotemporal characteristic chain to obtain a thermal response speed.

[0091] For example, the time from when the fusible piece starts to be heated to when it begins to deform, as well as the rate of subsequent deformation, can be obtained through spatiotemporal feature chain analysis, and the thermal response speed can be obtained by combining the two analyses; the spatiotemporal feature chain can also be input into a learning model, and the learning model can then output the corresponding thermal response speed, and so on, but is not limited to this.

[0092] With this setting, by performing time series feature extraction and spatiotemporal feature chain analysis on the fusible link image, the shape changes of the fusible link during the heating process can be captured comprehensively and meticulously. Compared with the traditional method of simply observing the melting time of the fusible link, the accuracy and reliability of the thermal response speed analysis are greatly improved, providing more scientific data support for evaluating the thermal response performance of fire dampers.

[0093] In one possible implementation, in step S420, analyzing the spatiotemporal characteristic chain to obtain the thermal response speed includes:

[0094] S421, dividing the spatiotemporal characteristic chain by the time point at which the fusible link deforms, to obtain a static deformation response chain and a dynamic deformation response chain; wherein the static deformation response chain is located before the time point at which the fusible link deforms, and the dynamic deformation response chain is located after the time point at which the fusible link deforms.

[0095] For example, by monitoring and analyzing the shape change data in the spatiotemporal feature chain, the specific time point at which the fusible link begins to undergo significant deformation can be determined. Using this time point as the boundary, the spatiotemporal feature chain is divided into two parts. The part before the fusible link deforms records information from the initial stage of heating, when no significant shape change occurs, forming a static deformation response chain. The part after the fusible link deforms records information about the dynamic shape change of the fusible link from the beginning of deformation to melting, forming a dynamic deformation response chain.

[0096] S422: The duration of the deformation static response chain is used as the static response time.

[0097] It can be understood that the deformation static response chain contains the image feature information from the time the fusible link begins to heat up to the time it begins to deform. By extracting and calculating the time information in the deformation static response chain, we can determine the duration of the fusible link's stable phase. This duration reflects the preheating time before the fusible link begins to significantly deform, which is the static response time.

[0098] S423: Analyze the deformation dynamic response chain to obtain a dynamic response rate.

[0099] It can be understood that the deformation dynamic response chain records a series of shape change information after the fusible link undergoes deformation. For example, by analyzing the rate of change of the fusible link's shape over time in the deformation dynamic response chain and combining it with the time information, the dynamic response rate of the fusible link after deformation can be calculated. Alternatively, the deformation dynamic response chain can be input into a learning model, which will output the corresponding dynamic response rate.

[0100] In a possible implementation, in step S423, analyzing the deformation dynamic response chain to obtain a dynamic response rate includes:

[0101] S4231: Analyze the deformation dynamic response chain to obtain deformation information; wherein the deformation information is used to reflect the deformation of the fusible link from the occurrence of deformation to a preset time.

[0102] It can be understood that the deformation information includes the deformation degree of the fusible piece at each moment from the occurrence of deformation to the completion of ventilation of the first valve port by the heat source device.

[0103] S4232: Analyze the deformation information based on the heating time to obtain a dynamic response rate.

[0104] For example, the deformation dynamic response chain can be divided into two parts based on the node in the deformation dynamic response chain at the heating time. The deformation rate of the fusible link in these two parts can then be analyzed separately, and the dynamic response rate can be obtained based on the combined analysis of the deformation rates of the two parts. Alternatively, after dividing the deformation dynamic response chain into two parts, the deformation magnitude of the fusible link can be analyzed. Based on the deformation magnitude of the two parts, that is, the time point corresponding to the hot air reaching the response temperature, the division is based on the deformation magnitude of the two parts. In the first part, the fusible link may only experience slight softening and slight deformation. The shape change at the end of this part relative to the beginning is measured to obtain a deformation magnitude value. In the second part, the fusible link may undergo more severe deformation. The deformation magnitude of this part is also measured. By comparing these two deformation magnitude values and combining them with the time length of each stage, the average deformation speed of each stage can be calculated. Based on the actual situation, such as the importance of the two stages, these two average deformation speeds can be weighted and summed to obtain a value that represents the overall dynamic response rate of the fusible link, and so on, but are not limited to these.

[0105] With this setting, the deformation information of the fusible link is combined with the heating time for analysis, fully considering the impact of the hot air heating process on the deformation of the fusible link. This makes the calculated dynamic response rate more able to reflect the true response of the fusible link during the actual heating process, thereby improving the accuracy and scientific nature of the thermal response rate analysis.

[0106] In one possible implementation, in step S4232, the deformation information is analyzed based on the heating time to obtain a dynamic response rate, including:

[0107] S42321, divide the deformation information into stages based on the heating time to obtain the first deformation stage and the second deformation stage; wherein the first deformation stage is used to reflect the deformation of the fusible link from the time point when the deformation occurs to the time point when the hot air output by the heat source device reaches the response temperature, and the second deformation stage is used to reflect the deformation of the fusible link from the time point when the hot air output by the heat source device reaches the response temperature to the time when the preset time is reached.

[0108] It can be understood that the deformation process of the fusible link after it has deformed can be divided into two stages based on the time it takes for the hot air to heat up and the deformation process of the fusible link. The first deformation stage focuses on the deformation of the fusible link from the time it begins to deform until the hot air reaches the response temperature. During this stage, the deformation of the fusible link is mainly affected by the gradually increasing temperature. The second deformation stage focuses on the deformation of the fusible link from the time the hot air reaches the response temperature to the preset time. During this period, the fusible link may accelerate its deformation after reaching the response temperature or accelerate its deformation.

[0109] S42322: Analyze the first deformation stage to obtain a first deformation rate. The first deformation rate is used to reflect the maximum rate of deformation of the fusible link.

[0110] As can be understood, during the first deformation stage, the deformation information of the fusible link is deeply analyzed. By calculating the ratio of the shape change of the fusible link at different moments to the corresponding time interval, the maximum change rate is found. This maximum change rate is the first deformation rate. It reflects the fastest possible deformation speed of the fusible link during the process of hot air heating to the response temperature, reflecting the fusible link's sensitivity to heat and rapid response ability during this stage.

[0111] S42323: Analyze the second deformation stage to obtain a second deformation rate. The second deformation rate is used to reflect the average rate of deformation of the fusible link.

[0112] It can be understood that during the second deformation stage, the second deformation rate is obtained by dividing the total deformation degree of the fusible link during this stage by the time elapsed in this stage. Because the deformation process of the fusible link in the second deformation stage is relatively complex, and may experience various changes such as acceleration and deceleration, calculating the average rate can comprehensively reflect the overall deformation speed of the fusible link during this stage, providing a basis for evaluating the thermal response performance of the fusible link after reaching the response temperature.

[0113] S42324: Obtain a dynamic response rate based on the first deformation rate and the second deformation rate.

[0114] For example, the weight of the first deformation rate can be obtained by the total time of the first deformation stage, and the weight of the second deformation rate can be obtained by the total time of the second deformation stage, and then the weighted summation is performed to obtain the dynamic response rate; or weights can be directly assigned to the first deformation rate and the second deformation rate, and then the weighted summation is performed to obtain the dynamic response rate, and so on, but not limited to this.

[0115] With this setup, the first and second deformation rates reflect the deformation speed characteristics of the fusible link during its thermal response process from different angles and stages. By comprehensively considering these two rates and using specific calculation methods (such as weighted averaging), a more comprehensive representation of the dynamic response rate of the fusible link throughout the entire deformation process can be obtained, making the assessment of the fusible link's thermal response speed more accurate and reasonable.

[0116] In one possible implementation, in step S42324, obtaining a dynamic response rate based on the first deformation rate and the second deformation rate includes:

[0117] S423241, obtain a first weight based on a first time ratio corresponding to a first deformation rate; wherein the first time ratio is used to indicate the ratio of the time from the time point when the fusible link is deformed to the time point when the hot air output by the heat source device reaches the response temperature to the time from the time point when the fusible link is deformed to the time when the preset temperature is reached.

[0118] It can be understood that the first time ratio is the ratio of the time the fusible link spends in the first deformation stage to the total time from the onset of deformation to the preset time. Different first time ratios are associated with a first weight, with a larger first time ratio indicating a higher first weight. The first time ratios can be matched against a test database to obtain corresponding first weights; alternatively, the first time ratios can be input into a learning model, which then outputs the corresponding first weights, and so on, but are not limited to these.

[0119] S423242, obtain a second weight based on a second time ratio corresponding to the second deformation rate; wherein the second time ratio is used to indicate the ratio of the time from the time point when the hot air output by the heat source device reaches the response temperature to the time when the preset time is reached to the time from the time point when deformation occurs to the time when the preset time is reached.

[0120] It can be understood that the second time ratio is the ratio of the time spent in the second deformation stage to the total time from the onset of deformation to the preset time. Different second time ratios are associated with a second weight, with a larger second time ratio indicating a higher second weight. The second time ratios can be matched against a test database to obtain corresponding second weights; alternatively, the second time ratios can be input into a learning model, which can then output the corresponding second weights, and so on, but are not limited to these.

[0121] S423243: Weight the first deformation rate based on the first weight, and weight the second deformation rate based on the second weight, and sum them up to obtain a dynamic response rate.

[0122] It can be understood that the dynamic response rate = the first weight × the first deformation rate + the second weight × the second deformation rate.

[0123] With this setting, the dynamic response rate is calculated by taking the weighted sum of the first deformation rate and the second deformation rate, fully considering the time proportion and deformation rate characteristics of the fusible link in different deformation stages. This makes the calculation result more accurately reflect the thermal response speed of the fusible link in the actual heating process, improves the accuracy and reliability of the thermal response speed analysis, and provides strong support for accurately evaluating the thermal response performance of the fire damper.

[0124] S424: Analyze the static response time and the dynamic response rate to obtain a thermal response speed.

[0125] For example, the response characteristics of the fusible link during continuous heating can be evaluated based on the static response time, and the thermal response speed can be obtained based on the corresponding rate after the fusible link is deformed. The static response time and dynamic response rate can also be input into the learning model, and the learning model can then output the corresponding thermal response speed, etc., but is not limited to this.

[0126] This setup segments the spatiotemporal characteristic chain based on the time point at which the fusible link deforms, yielding a static deformation response chain and a dynamic deformation response chain. This segmentation helps clearly delineate the different stages of the fusible link's thermal response. In practical applications, by determining the static response time, the duration of the static deformation response chain, can provide an intuitive understanding of the time the fusible link experiences during the initial heating phase, when no significant deformation occurs. This is crucial for evaluating the preheating characteristics of the fusible link under different environments. For example, static response times vary in ventilation duct environments due to varying initial hot air temperatures and flow rates. Analyzing the dynamic deformation response chain to obtain the dynamic response rate accurately quantifies the speed of the fusible link's response after deformation. During a fire, the dynamic response rate of the fusible link directly affects the fire damper's ability to activate and close in a timely manner. Accurately calculating the rate of change of the fusible link's shape over time in the dynamic response chain provides a scientific basis for evaluating the timely response of fire dampers in different fire scenarios. Combining the static response time and dynamic response rate to determine the thermal response rate provides a more comprehensive and accurate assessment. The entire process of the fusible link, from heating to deformation and eventual melting, is fully considered, organically combining static response time and dynamic response rate. This not only more accurately reflects the thermal response performance of the fusible link in actual use, but also provides more reliable reference data for the design, selection, and quality inspection of fire dampers, helping to improve the reliability and stability of fire dampers in actual fire protection applications.

[0127] In one possible implementation, in step S424, analyzing the static response time and the dynamic response rate to obtain the thermal response speed includes:

[0128] S4241, analyze based on the static response time to obtain the thermal response coefficient.

[0129] It is understood that different static response times correspond to a thermal response coefficient. The thermal response coefficient is a quantitative representation of the static response time in evaluating thermal response speed, reflecting the degree of influence of the static response time on the thermal response speed. For example, the static response time can be matched in a test database to obtain the corresponding thermal response coefficient. Alternatively, the static response time can be input into a learning model, which outputs the corresponding thermal response coefficient, and so on, but the present invention is not limited thereto.

[0130] S4242: Correct the dynamic response rate based on the thermal response coefficient to obtain a thermal response speed.

[0131] It can be understood that thermal response speed = thermal response coefficient × dynamic response rate.

[0132] With this setting, the thermal response speed is obtained by introducing the thermal response coefficient to correct the dynamic response rate, fully considering the relationship between the preheating stage and the deformation stage of the fusible link, further optimizing the calculation method of the thermal response speed, improving the accuracy and scientificity of the thermal response speed calculation, and being able to more accurately evaluate the thermal response performance of the fire damper.

[0133] S500, the control device controls the heat source device to ventilate toward the second valve port based on the test parameters until the blades are closed, and obtains the fire damper image in real time; wherein, the second valve port refers to the port adjacent to the first valve port and on the side where the fusible link is located, and the fire damper image is used to reflect the status of the fusible link and the blades.

[0134] It is understood that the control device sends another instruction to the heat source device, causing it to deliver hot air from the second valve port to the fire damper according to the previously determined test parameters, namely, the same air speed and a fixed air temperature (i.e., the response temperature). Under the action of the hot air, the fusible link will continue to be heated until it melts, thereby triggering the valve to close. Images of the fire damper can be captured using imaging devices such as cameras.

[0135] S600: Analyze the multiple fire damper images to obtain a mechanical response speed.

[0136] It can be understood that by analyzing multiple fire damper images taken at different times, image processing and motion recognition techniques can be used to identify changes in the state of the fusible link and valve within the images. For example, by analyzing the time when the fusible link blows, as well as the position and posture changes during the valve's initial operation and closing process, the time from fusible link blows to complete valve closure can be calculated, thereby determining the fire damper's mechanical response speed. Alternatively, multiple fire damper images can be input into a learning model, which will output the corresponding mechanical response speed.

[0137] In one possible implementation, in step S600, analyzing multiple fire damper images to obtain a mechanical response speed includes:

[0138] S610, analyzing multiple fire damper images to obtain fusible link response information and blade response information; wherein the fusible link response information is used to reflect the time from the beginning of heating to the melting of the fusible link, and the blade response information is used to reflect the time from the melting of the fusible link to the complete closing of the blade.

[0139] As can be understood, by analyzing the fire damper image frame by frame and using an image recognition algorithm, the characteristic changes of the fusible link in the image are extracted and the time from the initial heating of the fusible link to the appearance of melting signs is determined, which is the fusible link response information. Simultaneously, the valve's movement in the image is tracked, and the time from the moment the fusible link melts to the start of the valve's movement until it is fully closed is recorded as the valve response information.

[0140] S620: Analyze the fusible link response information and the blade response information to obtain a mechanical response speed.

[0141] For example, the mechanical response speed can be obtained by accumulating the time corresponding to the fusible link response information and the blade response information, and then processing the accumulated total time; the accumulated total time can also be directly used as the mechanical response speed, etc., but is not limited to this.

[0142] With this setup, the fusible link response information and the blade response information fully reflect the duration of the entire mechanical response process from the initial heating that triggers the fusible link to the final closure of the valve. This allows for an intuitive and comprehensive measure of the fire damper's mechanical response efficiency.

[0143] In a possible implementation, in step S620, analyzing the fusible link response information and the blade response information to obtain the mechanical response speed includes:

[0144] S621, accumulating the time of the fusible link response information and the blade response information to obtain the total operating time.

[0145] It can be understood that the total operating time = fusible link response information + blade response information.

[0146] S622: Obtain a mechanical response speed based on the total operating time.

[0147] For example, the degree of difference between the test and the actual fire scene can be evaluated based on the test parameters, and the total running time can be adjusted according to the degree of difference to obtain the final time as the mechanical response speed; the total running time can also be directly used as the mechanical response speed, etc., but is not limited to this.

[0148] With this setting, the total operating time is the complete time period from the fire damper sensing the fire heat signal to completing the closing action, which can intuitively and comprehensively integrate the time data of the fire damper's thermal response and mechanical response stages.

[0149] In one possible implementation, in step S622, obtaining the mechanical response speed based on the total operating time includes:

[0150] S6221: Perform redundancy matching based on the test parameters to obtain a redundancy coefficient.

[0151] It can be understood that the redundancy coefficient reflects the potential increase in the fire damper's response time under actual complex environments compared to ideal test environments. Different test parameters correspond to a redundancy coefficient. For example, the corresponding redundancy coefficient can be obtained by matching the test parameters in a test database, or by inputting the test parameters into a learning model, which then outputs the corresponding redundancy coefficient, etc., but the present invention is not limited thereto.

[0152] S6222: The total operating time is corrected based on the redundancy coefficient and used as the mechanical response speed.

[0153] It can be understood that mechanical response speed = redundancy factor × total operating time.

[0154] With this setting, the redundancy coefficient can be used to simulate the effects of various interference factors that may occur in actual situations on the response time, thereby obtaining a mechanical response speed that is more in line with actual application scenarios.

[0155] S700 , integrating the thermal response speed and the mechanical response speed to obtain a fire damper response parameter; wherein the fire damper response parameter is used to indicate a combination of the thermal response speed and the mechanical response speed.

[0156] It can be understood that the fire damper response parameters include thermal response speed and mechanical response speed.

[0157] This setup simulates actual operating conditions by capturing scenario information and matching test parameters. Image analysis is then used to determine the thermal and mechanical response speeds, thereby determining the fire damper response parameters and comprehensively and accurately evaluating fire damper performance. Thermal response speed analysis utilizes methods such as time series feature extraction, feature chain segmentation, staged deformation rate analysis, and weighted calculation to deeply analyze the thermal response characteristics of the fusible link. Mechanical response speed analysis accurately measures the valve's mechanical efficiency by capturing fusible link and blade response information, accumulating time, and performing redundancy correction, thereby improving test accuracy and reliability.

[0158] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0159] Corresponding to the fire damper response speed testing method described in the above embodiment, the embodiment of the present application further provides a fire damper response speed testing system, and each module of the system can implement each step of the fire damper response speed testing method. Figure 3 The structural block diagram of the fire damper response speed testing system provided in an embodiment of the present application is shown. For the sake of convenience, only the parts related to the embodiment of the present application are shown.

[0160] Reference Figure 3 , the fire damper response speed test system includes:

[0161] The acquisition module is used to obtain usage scenario information; wherein the usage scenario information is used to reflect the environment in which the fire damper is actually used in operation.

[0162] The matching module is used to match corresponding test parameters based on the usage scenario information; wherein the test parameters are used to reflect the heating rate and wind speed of the hot air and the response temperature.

[0163] The first control acquisition module is used to control the heat source device to ventilate toward the first valve port based on the test parameters for a preset time, and to obtain the image of the fusible link in real time; wherein the first valve port refers to the port on the side of the blade away from the fusible link, and the moment corresponding to the preset time is greater than the moment corresponding to the hot air output by the heat source device being heated to the response temperature at a heating rate.

[0164] The first analysis module is configured to analyze the plurality of fusible sheet images to obtain a thermal response speed.

[0165] The second control acquisition module is used to control the device to control the heat source device to ventilate toward the second valve port based on the test parameters until the blades are closed, and to obtain the fire damper image in real time; wherein, the second valve port refers to the port adjacent to the first valve port and on the side where the fusible link is located, and the fire damper image is used to reflect the status of the fusible link and the blades.

[0166] The second analysis module is used to analyze the multiple fire damper images to obtain a mechanical response speed.

[0167] The integration module is used to integrate the thermal response speed and the mechanical response speed to obtain the fire damper response parameter; wherein the fire damper response parameter is used to indicate the combination of the thermal response speed and the mechanical response speed.

[0168] It should be noted that the information interaction, execution process and other contents between the above modules are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0169] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above modules is used as an example for illustration. In actual applications, the above functions can be distributed and completed by different modules as needed, that is, the internal structure of the system can be divided into different modules to complete all or part of the functions described above. The modules in the embodiment can be integrated into one processing unit, or each module can exist physically alone, or two or more modules can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of the modules are only for the convenience of distinguishing each other and are not used to limit the scope of protection of this application. The specific working process of the modules in the above system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0170] An embodiment of the present application further provides a fire damper response speed testing device, comprising a heat source device and a control device, wherein the control device is electrically connected to the heat source device. Figure 4 This is a schematic diagram of the structure of the control device 6 provided in one embodiment of the present application. Figure 4 As shown, the control device 6 of this embodiment includes: at least one processor 60 ( Figure 4 Only one is shown), at least one memory 61 ( Figure 4 Only one is shown in the figure) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the control device 6 implements the steps of any of the above-mentioned fire damper response speed test method embodiments, or implements the functions of the modules in the above-mentioned system embodiments.

[0171] For example, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to implement the present application. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the control device 6.

[0172] The control device 6 can be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The fire damper response speed test device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that Figure 4 This is merely an example of the control device 6 and does not constitute a limitation on the control device 6 . The control device 6 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, buses, etc.

[0173] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0174] In some embodiments, the memory 61 may be an internal storage unit of the control device 6, such as a hard drive or memory of the control device 6. In other embodiments, the memory 61 may also be an external storage device of the control device 6, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the control device 6. Furthermore, the memory 61 may include both the internal storage unit of the control device 6 and an external storage device. The memory 61 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of the computer program. The memory 61 may also be used to temporarily store data that has been output or is about to be output.

[0175] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0176] An embodiment of the present application provides a computer program product. When the computer program product is run on a fire damper response speed test device, the fire damper response speed test device is enabled to implement the steps of any of the above method embodiments.

[0177] If the integrated unit is implemented as a software functional unit and sold or used as a standalone product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application can implement all or part of the process steps in the above-mentioned method embodiments by using a computer program to instruct the relevant hardware. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of each of the above-mentioned method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file, or some intermediate form. The computer-readable medium can include at least any entity or device capable of carrying the computer program code to the fire damper response speed test equipment, a recording medium, computer memory, read-only memory (ROM), random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Examples include a USB flash drive, a removable hard drive, a magnetic disk, or an optical disk.

[0178] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0179] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0180] In the embodiments provided herein, it should be understood that the disclosed fire damper response speed testing device and system can be implemented in other ways. For example, the fire damper response speed testing system embodiment described above is merely illustrative. For example, the module division is merely a logical functional division. In actual implementation, other divisions are possible, such as combining or integrating multiple modules into another system, or omitting or disabling certain features. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device, or module, and may be electrical, mechanical, or other means.

[0181] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0182] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A fire damper response speed testing method, characterized in that: include: Obtaining usage scenario information; wherein the usage scenario information is used to reflect the environment in which the fire damper is actually used in operation; Matching corresponding test parameters based on the usage scenario information; wherein the test parameters are used to reflect the heating rate and wind speed of the hot air and the response temperature; The control device controls the heat source device to ventilate toward the first valve port for a preset time based on the test parameters, and acquires an image of the fusible link in real time; wherein the first valve port refers to the port on the side of the blade away from the fusible link, and the time corresponding to the preset time is greater than the time corresponding to the time when the hot air output by the heat source device is heated to the response temperature at the heating rate; Analyzing the plurality of images of the fusible sheet to obtain a thermal response speed; The control device controls the heat source device to ventilate toward the second valve port based on the test parameters until the blades are closed, and acquires a fire damper image in real time; wherein the second valve port is a port adjacent to the first valve port and located on the side of the fusible link, and the fire damper image is used to reflect the status of the fusible link and the blades; Analyzing the plurality of fire damper images to obtain a mechanical response speed; The thermal response speed and the mechanical response speed are integrated to obtain a fire damper response parameter; wherein the fire damper response parameter is used to indicate a combination of the thermal response speed and the mechanical response speed.

2. The fire damper response speed testing method according to claim 1, characterized in that: The analyzing the plurality of images of the fusible sheet to obtain the thermal response speed includes: Extracting temporal features from the plurality of images of the fusible link to obtain a spatiotemporal feature chain; wherein the spatiotemporal feature chain is used to reflect the state of the shape of the fusible link changing over time; The thermal response speed is obtained by analyzing the spatiotemporal characteristic chain.

3. The fire damper response speed testing method according to claim 2, characterized in that: The analyzing according to the spatiotemporal characteristic chain to obtain the thermal response speed includes: The spatiotemporal characteristic chain is divided according to the time point at which the fusible link deforms, to obtain a static deformation response chain and a dynamic deformation response chain; wherein the static deformation response chain is located before the time point at which the fusible link deforms, and the dynamic deformation response chain is located after the time point at which the fusible link deforms; The duration of the deformation static response chain is used as the static response time; Analyze the deformation dynamic response chain to obtain a dynamic response rate; The thermal response speed is obtained by analyzing the static response time and the dynamic response rate.

4. The fire damper response speed testing method according to claim 3, characterized in that: The analyzing the deformation dynamic response chain to obtain a dynamic response rate includes: Analyzing the deformation dynamic response chain to obtain deformation information; wherein the deformation information is used to reflect the deformation of the fusible link from the occurrence of deformation to the preset time; The deformation information is analyzed based on the heating time to obtain a dynamic response rate.

5. The fire damper response speed testing method according to claim 4, characterized in that: The analyzing the deformation information based on the heating time to obtain a dynamic response rate includes: The deformation information is divided into stages based on the heating time to obtain a first deformation stage and a second deformation stage; wherein the first deformation stage is used to reflect the deformation of the fusible piece from the time point when the deformation occurs to the time point when the hot air output by the heat source device reaches the response temperature, and the second deformation stage is used to reflect the deformation of the fusible piece from the time point when the hot air output by the heat source device reaches the response temperature to the time when the preset time is reached; Analyzing the first deformation stage to obtain a first deformation rate; wherein the first deformation rate is used to reflect the maximum rate of deformation of the fusible piece; Analyzing the second deformation stage to obtain a second deformation rate; wherein the second deformation rate is used to reflect the average rate of deformation of the fusible piece; A dynamic response rate is obtained based on the first deformation rate and the second deformation rate.

6. The fire damper response speed testing method according to claim 5, characterized in that: The obtaining of a dynamic response rate based on the first deformation rate and the second deformation rate includes: A first weight is obtained based on a first time ratio corresponding to the first deformation rate; wherein the first time ratio is used to indicate a ratio of the time from the time when the fusible link is deformed to the time when the hot air output by the heat source device reaches the response temperature to the time from the time when the fusible link is deformed to the time when the hot air reaches the preset temperature; A second weight is obtained based on a second time ratio corresponding to the second deformation rate; wherein the second time ratio is used to indicate the ratio of the time from the time when the hot air output by the heat source device reaches the response temperature to the time when the hot air reaches the preset time to the time from the time when the deformation occurs to the time when the preset time is reached; The first deformation rate is weighted based on the first weight, and the second deformation rate is weighted based on the second weight, and the sum of the weights is used to obtain a dynamic response rate.

7. The fire damper response speed testing method according to claim 3, characterized in that: The analyzing according to the static response time and the dynamic response rate to obtain the thermal response speed includes: Analyze the static response time to obtain a thermal response coefficient; The dynamic response rate is corrected based on the thermal response coefficient to obtain a thermal response speed.

8. The fire damper response speed testing method according to claim 1, characterized in that: The analyzing the plurality of fire damper images to obtain the mechanical response speed includes: Analyzing the plurality of fire damper images to obtain fusible link response information and blade response information; wherein the fusible link response information is used to reflect the time from when the fusible link begins to be heated to when it melts, and the blade response information is used to reflect the time from when the fusible link melts to when the blade is fully closed; The mechanical response speed is obtained by analyzing the fusible link response information and the blade response information.

9. The fire damper response speed testing method according to claim 8, characterized in that: The analyzing the fusible piece response information and the blade response information to obtain the mechanical response speed includes: Accumulate the time of the fusible piece response information and the blade response information to obtain a total operating time; A mechanical response speed is obtained based on the total operating time.

10. The fire damper response speed testing method according to claim 9, characterized in that: The obtaining of the mechanical response speed based on the total operating time includes: Performing redundancy matching based on the test parameters to obtain a redundancy coefficient; The total operating time is corrected based on the redundancy coefficient and used as the mechanical response speed.

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