Method for testing response speed of fire damper

Abstract

The invention is applicable to the technical field of fireproof valves, and particularly relates to a fireproof valve response speed test method, which comprises the following steps: acquiring use scene information; matching corresponding test parameters based on the use scene information; the control device controls the heat source device to ventilate towards the first valve port for a preset time based on the test parameters, and obtains a fusible piece image in real time; analyzing according to the plurality of fusible piece images to obtain a thermal response speed; the control device controls the heat source device to ventilate towards the second valve port based on the test parameters until the blades are closed, and obtains a fireproof valve image in real time; analyzing according to the plurality of fireproof valve images to obtain a mechanical response speed; and integrating the thermal response speed and the mechanical response speed to obtain response parameters of the fire damper. According to the method, multi-dimensional response analysis of the fireproof valve is realized, and the test data of the response speed of the fireproof valve can be acquired in a targeted manner, so that the evaluation accuracy and reliability of the response speed of the fireproof valve are improved.

Description

Technical Field

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

[0002] In the modern building fire protection system, as a key component, the performance of a fire damper is directly related to the life safety of people and the degree of property loss during a fire. Fire dampers are usually installed on the supply and return air ducts of ventilation and air conditioning systems. Under normal operating conditions, they are in an open state to ensure the smooth operation of the ventilation system. Once a fire occurs, when the flue gas temperature in the duct rises to a specific threshold (such as 70°C commonly seen in ventilation systems and 280°C in smoke exhaust systems), the fire damper needs to quickly respond and close, and meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, playing a crucial role in isolating smoke and fire, effectively preventing the spread of fire and smoke through the ventilation duct, and buying precious time for personnel evacuation and fire fighting and rescue.

[0003] In the prior art, the detection of the response speed of a fire damper usually places the fire damper in a test environment, uses a heating device to heat the fire damper at a constant heating rate, and simultaneously records the melting time of the fusible link and the closing time of the blade through manual observation or relatively basic sensor devices, and uses this as the detection data of the response speed of the fire damper. However, when an actual fire occurs, the ventilation duct layouts and spatial structures 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 heating rate, wind speed magnitude and direction are highly uncertain. For example, in a long and narrow underground passage, the hot air flow may form a relatively large wind speed due to the passage structure, and the heating rate will also be significantly different from that in an open space. Therefore, the traditional test method is difficult to meet the requirements of modern building fire protection for high-precision performance evaluation of fire dampers. Summary of the Invention

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

[0005] In a first aspect, the embodiments of this application provide a method for testing the response speed of a fire damper, including: Obtaining usage scenario information; wherein, the usage scenario information is used to reflect the environment in which the fire damper actually operates; 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 hot air and the response temperature; The control device controls the heat source device to ventilate towards the first valve port based on the test parameters for a preset time, and obtains the fusible plug images in real time; wherein, the first valve port refers to the port on the side of the blade away from the fusible plug, and the moment corresponding to the preset time is greater than the moment when the hot air output by the heat source device rises to the response temperature at the heating rate; Analyze based on multiple said fusible plug images to obtain the heat response speed; The control device controls the heat source device to ventilate towards the second valve port based on the test parameters until the blade closes, and obtains the fire damper images 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 plug is located, and the fire damper images are used to reflect the states of the fusible plug and the blade; Analyze based on multiple said fire damper images to obtain the mechanical response speed; Integrate the heat 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 set of the heat response speed and the mechanical response speed.

[0006] In the above technical solution of the embodiment of the present application, there are at least the following technical effects: By obtaining the usage scenario information for reflecting the environment in which the fire damper actually operates, and matching the corresponding test parameters for reflecting the heating rate, wind speed and response temperature of the hot air based on the usage scenario information, the test environment can be close to the actual situation, and the measured response speed data has extremely high reference value; Then, the control device controls the heat source device to ventilate towards the first valve port of the port on the side of the blade away from the fusible plug based on the test parameters for a preset time, and obtains the fusible plug images in real time; Then analyze based on multiple fusible plug images to obtain the heat response speed, which helps to deeply understand the heat response characteristics of the fusible plug and provides scientific data reference for the response speed evaluation of the fire damper in the actual fire process; Then, the control device controls the heat source device to ventilate towards the second valve port adjacent to the first valve port and on the side where the fusible plug is located based on the test parameters until the blade closes, and obtains the fire damper images for reflecting the states of the fusible plug and the blade in real time; Then analyze based on multiple fire damper images to obtain the mechanical response speed; Finally, confirm the heat response speed and the mechanical response speed as the fire damper response parameter. This method realizes the multi-dimensional response analysis of the fire damper by multi-level output, analyzes the heat melting characteristics of the fusible plug, the mechanical characteristics of the connection between the fusible plug and the blade, and the response characteristics of the blade itself, and can collect the test data of the response speed of the fire damper targeted, thereby improving the evaluation accuracy and reliability of the response speed of the fire damper.

[0007] In a possible implementation manner of the first aspect, the analyzing based on multiple said fusible plug images to obtain the heat response speed includes: Temporal feature extraction is performed based on multiple images of the fusible chips to obtain a spatio-temporal feature chain; wherein, the spatio-temporal feature chain is used to reflect the state of the shape change of the fusible chips over time. Analysis is performed based on the spatio-temporal feature chain to obtain the thermal response speed.

[0008] In a possible implementation manner of the first aspect, the analysis based on the spatio-temporal feature chain to obtain the thermal response speed includes: The spatio-temporal feature chain is segmented at the time point when the fusible chip deforms to obtain a deformation static response chain and a deformation dynamic response chain; wherein, the deformation static response chain is before the time point when the fusible chip deforms, and the deformation dynamic response chain is after the time point when the fusible chip deforms. The elapsed time of the deformation static response chain is used as the static response time. Analysis is performed based on the deformation dynamic response chain to obtain the dynamic response rate. Analysis is performed based on the static response time and the dynamic response rate to obtain the thermal response speed.

[0009] In a possible implementation manner of the first aspect, the analysis based on the deformation dynamic response chain to obtain the dynamic response rate includes: Analysis is performed based on the deformation dynamic response chain to obtain deformation information; wherein, the deformation information is used to reflect the deformation condition of the fusible chip from the time point of deformation to the preset time. Based on the heating-up time, the deformation information is analyzed to obtain the dynamic response rate.

[0010] In a possible implementation manner of the first aspect, the analysis based on the heating-up time to the deformation information to obtain the dynamic response rate includes: Based on the heating-up time, the deformation information is divided into stages to obtain a first deformation stage and a second deformation stage; wherein, the first deformation stage is used to reflect the deformation condition of the fusible chip from the time point of deformation 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 condition of the fusible chip from the time point when the hot air output by the heat source device reaches the response temperature to the preset time. Analysis is performed based on 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 chip. Analysis is performed based on 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 chip. The dynamic response rate is obtained based on the first deformation rate and the second deformation rate.

[0011] In a possible implementation of the first aspect, obtaining the dynamic response rate based on the first deformation rate and the second deformation rate includes: Obtaining a first weight based on a first time ratio corresponding to the 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 starts to deform 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 starts to deform to the preset time; Obtaining 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 preset time to the time from the time point when the fusible link starts to deform to the preset time; Weighting the first deformation rate based on the first weight, weighting the second deformation rate based on the second weight, and obtaining the dynamic response rate after summation.

[0012] 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: Analyzing according to the static response time to obtain a thermal response coefficient; Correcting the dynamic response rate based on the thermal response coefficient to obtain the thermal response speed.

[0013] In a possible implementation of the first aspect, analyzing according to multiple images of the fire damper to obtain the mechanical response speed includes: Analyzing according to multiple images of the fire damper to obtain the fusible link response information and the blade response information; wherein, the fusible link response information is used to reflect the time from the start of heating of the fusible link to its melting, 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; Analyzing according to the fusible link response information and the blade response information to obtain the mechanical response speed.

[0014] In a possible implementation of the first aspect, analyzing according to the fusible link response information and the blade response information to obtain the mechanical response speed includes: Accumulating the time of the fusible link response information and the blade response information to obtain the total running time; Obtaining the mechanical response speed based on the total running time.

[0015] In a possible implementation of the first aspect, obtaining the mechanical response speed based on the total running time includes: Perform redundancy matching based on the test parameters to obtain a redundancy coefficient; After correcting the total running time based on the redundancy coefficient, use it as the mechanical response speed.

[0016] In a second aspect, an embodiment of the present application provides a fire damper response speed test system, including: An acquisition module, configured to acquire usage scenario information; wherein, the usage scenario information is used to reflect the environment in which the fire damper actually operates; 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 hot air and the response temperature; A first control acquisition module, configured to control the device to control the heat source device to ventilate towards the first valve port based on the test parameters for a preset time, and to acquire the fusible link image 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 when the hot air output by the heat source device rises to the response temperature at the heating rate; A first analysis module, configured to analyze based on multiple fusible link images to obtain the thermal response speed; A second control acquisition module, configured to control the device to control the heat source device to ventilate towards the second valve port based on the test parameters until the blade closes, and to acquire 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 states of the fusible link and the blade; A second analysis module, configured to analyze based on multiple fire damper images to obtain the mechanical response speed; An integration module, configured 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 the set of the thermal response speed and the mechanical response speed.

[0017] In a third aspect, an embodiment of the present application provides a fire damper response speed test device, including a heat source device and a control device, the control device is electrically connected to the heat source device, the control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, it implements the method according to any one of the first aspects above.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method according to any one of the first aspects above.

[0019] 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, it causes the fire damper response speed testing device to execute the fire damper response speed testing method described in any one of the above first aspects.

[0020] It can be understood that the beneficial effects of the above second aspect to fifth aspect can be referred to the relevant descriptions in the above first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic flowchart of the fire damper response speed testing method provided by an embodiment of the present application; Figure 2 It is a schematic implementation flowchart of the fire damper response speed testing method provided by an embodiment of the present application; Figure 3 It is a schematic structural diagram of the fire damper response speed testing system provided by an embodiment of the present application; Figure 4 It is a schematic structural diagram of the control device of the fire damper response speed testing device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are proposed to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, the detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0024] It should be understood that when used in the specification and claims of the present application, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0025] It should also be understood that the term " / and" as used in the specification and claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] As used in the specification and appended claims of the present application, the term "if" may be construed, depending on the context, as "when", "once", "in response to determining", or "in response to detecting". Similarly, the phrase "if determined" or "if the described condition or event is detected" may be construed, depending on the context, to mean "once determined", "in response to determining", "once the described condition or event is detected", or "in response to detecting the described condition or event".

[0027] In addition, in the description of the specification and appended claims of the present application, the terms "first", "second", "third", etc. are used only for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0028] Reference to "one embodiment" or "some embodiments" or the like described in the specification of the present application means that a specific feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having", and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0029] In the prior art, the detection of the response speed of a fire damper is usually carried out by placing the fire damper in a fixed standard test environment and using uniform heating rate and wind speed parameters for testing. Generally, a simple heating device is used to heat the fire damper at a constant heating rate, and at the same time, the melting time of the fusible link and the closing time of the blade are recorded by manual observation or relatively basic sensor devices.

[0030] There are many limitations in this testing method. On the one hand, due to the single and idealized test environment, there are significant differences from the complex and changeable working conditions in the actual fire scenario. When an actual fire occurs, the ventilation duct layouts and spatial structures of different building types (such as high-rise office buildings, underground parking lots, large commercial complexes, etc.) are different, and the hot air flow generated by the fire is affected by the building structure and obstacles, and its heating rate, wind speed magnitude and direction are all highly uncertain. For example, in a long and narrow underground passage, the hot air flow may form a relatively large wind speed due to the passage structure, and the heating rate will also be significantly different from that in an open space. However, the existing testing methods are difficult to simulate these complex actual working conditions, resulting in the response speed data obtained from the test being unable to accurately reflect the performance of the fire damper in a real fire.

[0031] On the other hand, most of the existing detection methods adopt a simple time calculation method, only focusing on the total duration from the start of heating to the closing of the blade, lacking in-depth analysis of the heat response process of the fusible link and the mechanical response process of the blade, unable to clarify the correlation between the heat response and the mechanical response and their respective contributions to the overall response speed, and it is difficult to meet the requirements of modern building fire protection for the high-precision performance evaluation of fire dampers.

[0032] To solve the above problems, the embodiments of the present application provide a method for testing the response speed of a fire damper. In this method, by obtaining the usage scenario information of the environment used in the actual operation of the fire damper and matching the corresponding test parameters for reflecting the heating rate, wind speed and response temperature of the hot air based on the usage scenario information, the test environment can be made close to the actual situation, and the measured response speed data has extremely high reference value; then, through the control device, the heat source device is controlled to ventilate to the first valve port of the port on the side of the blade away from the fusible link based on the test parameters for a preset time, and the image of the fusible link is obtained in real time; then, through the analysis of multiple fusible link images, the heat response speed is obtained, which helps to deeply understand the heat response characteristics of the fusible link and provides scientific data reference for the response speed evaluation of the fire damper in the actual fire process; then, through the control device, the heat source device is controlled to ventilate to the second valve port of the port adjacent to the first valve port and on the side where the fusible link is located until the blade closes, and the fire damper image for reflecting the states of the fusible link and the blade is obtained in real time; then, through the analysis of multiple fire damper images, the mechanical response speed is obtained; finally, the heat response speed and the mechanical response speed are determined as the response parameters of the fire damper. Through multi-level outputs, this method analyzes and obtains the heat 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, realizing multi-dimensional response analysis of the fire damper, and can specifically collect the test data of the response speed of the fire damper, thereby improving the evaluation accuracy and reliability of the response speed of the fire damper.

[0033] The method for testing the response speed of a fire damper provided by the embodiments of the present application can be applied to a fire damper response speed testing device. At this time, the fire damper response speed testing device is the execution subject of the method for testing the response speed of a fire damper provided by the embodiments of the present application, and the embodiments of the present application do not impose any restrictions on the specific type of the fire damper response speed testing device.

[0034] For example, a fire damper response speed test device may include a heat source device and a control device, and the control device is electrically connected to the heat source device. The heat source device is used to provide an installation environment for testing the response speed of the fire damper and for conducting ventilation tests on the fire damper. The heat source device may include a placement device and a air supply device. The placement device is used to fix the fire damper and provide a stable test installation environment for it. The placement device can adopt a modular design, including adjustable fixing jigs and a calibration platform. The fixing jigs can adapt to fire dampers of different specifications and models and achieve firm fixation through bolts, buckles, etc.; the calibration platform is equipped with adjustment knobs to ensure that the fire damper is in a suitable installation state so that the fire damper can be in a test state. The air supply device is used to generate hot air that meets the requirements of test parameters and conduct ventilation tests on the fire damper. It is mainly composed of an air heating system, a wind speed adjustment system, and an air flow guiding system. The air heating system can adopt efficient electric heating wires or infrared heating elements, combined with an intelligent temperature control module, to achieve precise control of the heating rate and response temperature of the hot air; the wind speed adjustment system is equipped with a variable frequency fan and a wind speed sensor, adjusts the wind speed by controlling the fan speed, and real-time feedbacks the wind speed data to ensure that the output wind speed is stable within the test parameter range; the air flow guiding system consists of a deflector, a duct, and an air outlet. The deflector can adjust the flow direction and diffusion angle of the hot air. The duct is designed with a smooth inner wall to reduce air flow resistance. The shape and size of the air outlet are optimized to evenly blow the hot air towards the first valve port and the second valve port of the fire damper, simulating the air flow state in a real fire scenario. The control device monitors and controls the entire test process.

[0035] For example, the control device can be 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 large screen, a smart TV and other terminal devices, a handheld device with wireless communication function, a computing device or other processing devices 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 set top box (STB), a customer premise equipment (CPE) and / or other devices for communicating on a wireless system, and next-generation communication systems, such as mobile terminals in a 5G network or mobile terminals in a future evolved Public Land Mobile Network (PLMN).

[0036] To better understand the fire damper response speed test method provided by the embodiments of the present application, the following provides an exemplary introduction to the specific implementation process of the fire damper response speed test method provided by the embodiments of the present application.

[0037] Figure 1 and Figure 2 FIG. shows a schematic flowchart of the fire damper response speed test method provided by the embodiments of the present application. The fire damper response speed test method includes: S100, obtaining usage scenario information; wherein, the usage scenario information is used to reflect the environment in which the fire damper actually operates.

[0038] It can be understood that the usage scenario information covers various factors, such as the type of building where the fire damper is installed (such as residential, commercial complex, industrial factory building, etc.), the specific area of the building (floor, pipeline routing, etc.), and the type of fire that may be encountered (such as the differences in the smoke and hot air environment caused by Class A solid fires and Class B liquid fires). These factors will directly affect the flow state of the hot air around the fire damper during actual operation, the heating rate, and the maximum temperature reached, etc. The usage scenario information can be manually input by humans, or obtained from the test database, etc., but is not limited thereto. The test database refers to a database that contains the usage places corresponding to all specifications of fire dampers. These data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved to the database to form a test database.

[0039] S200, matching corresponding test parameters based on the usage scenario information; wherein, the test parameters are used to reflect the heating rate, wind speed, and response temperature of the hot air.

[0040] 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 undergoes physical changes such as melting when it senses changes in the external thermal environment, thereby triggering the closing action of the fire damper. At the same time, it is also the extreme point of the heating of the hot air output by the heat source device during the test process. Generally speaking, the response temperature is usually 70°C or 280°C. Exemplarily, the corresponding test parameters can be obtained by matching the usage scenario information in the test database, or the usage scenario information can be input into a learning model, and the learning model then outputs the corresponding test parameters, etc., but is not limited thereto. 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 the corresponding test parameters.

[0041] In S300, the control device controls the heat source device to ventilate towards the first valve port based on the test parameters for a preset time, and obtains the fusible plug image in real time; wherein, the first valve port refers to the port on the side of the blade away from the fusible plug, and the moment corresponding to the preset time is greater than the moment corresponding to the hot air output by the heat source device rising to the response temperature at the heating rate.

[0042] It can be understood that the fire damper mainly consists of a valve body, blades, an actuator, a fusible plug, etc. The valve body can be a rectangular or circular frame structure. The blades are installed inside the valve body and are the key components for controlling the airflow to pass through and closing the blades. Generally made of thin metal plates, they can rotate around an axis. During normal ventilation, the blades are in the open state and divide the valve port into two channels on the left and right, allowing the airflow to pass through the two ports formed by the blades and the valve body smoothly. The actuator is a device for controlling the movement of the blades and is divided into two operation modes: manual and automatic. The manual actuator is convenient for manual operation of opening and closing the blades during installation, commissioning, maintenance, and inspection; the automatic actuator plays a key role during a fire. When the fusible plug melts or receives a fire control signal, the automatic actuator drives the blades to close quickly mechanically or electrically. The electric actuator usually consists of components such as a motor, gears, and connecting rods, and uses electrical energy to convert into mechanical energy to achieve the movement of the blades; some actuators are also equipped with a signal feedback device, which can feedback the open or closed state of the valve to the fire control system. The fusible plug is the temperature-sensing element of the fire damper and is usually made of a low-melting-point alloy. The fusible plug is installed at the actuator or at a position connected to the blade, and is located in one of the two channels formed by dividing the valve port into two channels on the left and right when the blade is in the open state. When the fusible plug is in the left channel, the right channel is the first valve port; when the fusible plug is in the right channel, the left channel is the first valve port. When the heat source device outputs air, there is a certain distance between its air outlet and the fire damper, and this distance can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience, etc. When ventilating towards the first valve port, the fusible plug will be heated through the flow and heat exchange of the air. As the air temperature rises, the fusible plug will undergo a certain deformation phenomenon.

[0043] The preset time refers to the time for the heat source device to ventilate towards the first valve port. The moment corresponding to the preset time being greater than the moment corresponding to the hot air output by the heat source device rising to the response temperature at the heating rate means that when the heat source device ventilates towards the first valve port until the heating temperature reaches the response temperature, it still ventilates towards the first valve port until the preset time ends. Therefore, the time taken for the hot air output by the heat source device to rise to the response temperature at the heating rate is less than the preset time. The preset time is a preset time value, which can be input manually by humans or obtained from the test database, etc., but is not limited to this. The fusible plug image can be obtained through imaging devices such as cameras.

[0044] The S400 analyzes based on multiple images of the fusible links to obtain the thermal response speed.

[0045] It can be understood that by processing and analyzing multiple images of the fusible links taken at different times, the changes during the entire process from the start of heating of the fusible link to deformation and finally melting can be captured. Using image processing algorithms, features such as the position, shape, and color of the fusible link in the image are identified, and the variation laws of these features over time are analyzed; or the image of the fusible link can be input into a learning model, and the learning model outputs the corresponding thermal response speed, etc., but not limited to this.

[0046] In a possible implementation manner, in step S400, analyzing based on multiple images of the fusible links to obtain the thermal response speed includes: S410 extracts temporal and spatial features according to multiple images of the fusible links to obtain a spatio-temporal feature chain; wherein, the spatio-temporal feature chain is used to reflect the state of the shape of the fusible link changing over time.

[0047] Exemplarily, image analysis techniques can be used to process multiple images of the fusible links obtained in chronological order. Shape features such as the contour and edge of the fusible link are extracted from each image, and these features are arranged and combined in chronological order to form a sequence that can reflect the state of the fusible link at different times, that is, the spatio-temporal feature chain.

[0048] S420 analyzes according to the spatio-temporal feature chain to obtain the thermal response speed.

[0049] Exemplarily, the time from the start of heating of the fusible link to the start of deformation and the subsequent deformation rate can be obtained through spatio-temporal feature chain analysis, and then the thermal response speed can be obtained by comprehensively analyzing the two; or the spatio-temporal feature chain can be input into a learning model, and the learning model then outputs the corresponding thermal response speed, etc., but not limited to this.

[0050] With such a setting, by extracting temporal features and analyzing the spatio-temporal feature chain of the fusible link image, the shape changes of the fusible link during the heating process can be comprehensively and carefully captured. 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 the fire damper.

[0051] In a possible implementation manner, in step S420, analyzing according to the spatio-temporal feature chain to obtain the thermal response speed includes: S421 divides the spatio-temporal feature chain at the time point when the fusible link deforms to obtain a deformation static response chain and a deformation dynamic response chain; wherein, the deformation static response chain is before the time point when the fusible link deforms, and the deformation dynamic response chain is after the time point when the fusible link deforms.

[0052] Exemplarily, by monitoring and analyzing the shape change data in the spatio-temporal feature chain, the specific time point when the fusible link begins to undergo significant deformation can be determined. Taking this time point as the boundary, the spatio-temporal feature chain is divided into two parts. The part before the fusible link deforms records the information of the fusible link in the stage of no obvious shape change in the initial heating stage, forming a deformation static response chain; while the part after the fusible link deforms records the shape dynamic change information of the fusible link from the start of deformation to the melting process, constituting a deformation dynamic response chain.

[0053] S422, take the elapsed time of the deformation static response chain as the static response time.

[0054] It can be understood that the deformation static response chain contains the image feature information of the fusible link from the start of heating to the start of deformation. By extracting and calculating the time information in the deformation static response chain, the elapsed time of the fusible link in this stable stage can be obtained, and this elapsed time reflects the preheating time of the fusible link before the start of obvious deformation, which is the static response time.

[0055] S423, analyze according to the deformation dynamic response chain to obtain the dynamic response rate.

[0056] It can be understood that the deformation dynamic response chain records a series of shape change information after the fusible link deforms. Exemplarily, by analyzing the change rate of the fusible link shape with time in the deformation dynamic response chain and combining the time information, the dynamic response rate of the fusible link after deformation can be calculated. The deformation dynamic response chain can also be input into a learning model, and the learning model outputs the corresponding dynamic response rate.

[0057] In a possible implementation manner, in step S423, analyzing according to the deformation dynamic response chain to obtain the dynamic response rate includes: S4231, analyze according to the deformation dynamic response chain to obtain deformation information; wherein, the deformation information is used to reflect the deformation condition of the fusible link from the start of deformation to a preset time.

[0058] It can be understood that the deformation information includes the deformation degree of the shape of the fusible link at each moment from the start of deformation to the end of ventilation of the first valve port by the heat source device.

[0059] S4232, analyze the deformation information based on the heating time to obtain the dynamic response rate.

[0060] Exemplarily, the deformation dynamic response chain can be divided into two parts according to the node where the heating-up time is located in the deformation dynamic response chain, and then the deformation rates of the fusible links in these two parts can be analyzed separately. Based on the deformation rates of both, the dynamic response rate can be comprehensively analyzed. Alternatively, after dividing the deformation dynamic response chain into two parts, the deformation magnitudes of the fusible links can be analyzed. Based on the deformation magnitudes of both, that is, taking the time point corresponding to when the hot air reaches the response temperature as the division basis, in the first part, the fusible link may only show slight softening and minor deformation. Measure the dimensional change of its shape at the end of this part relative to the start to obtain a deformation magnitude value. In the second part, the fusible link may undergo relatively severe deformation, and also measure its deformation magnitude in this part. By comparing these two deformation magnitude values and combining the time lengths of their respective stages, the average deformation speeds in different stages can be calculated. Then, according to the actual situation, such as the importance levels of the two stages, these two average deformation speeds can be weighted and summed to obtain a value that can represent the overall dynamic response rate of the fusible link, etc., but not limited to this.

[0061] With such a setting, the deformation information of the fusible link is combined with the heating-up time for analysis, fully considering the influence of the hot air heating-up process on the deformation of the fusible link, making the calculated dynamic response rate better reflect the true response of the fusible link during the actual heating process and improving the accuracy and scientific nature of the thermal response speed analysis.

[0062] In a possible implementation manner, in step S4232, analyzing the deformation information based on the heating-up time to obtain the dynamic response rate includes: S42321, dividing the deformation information into stages based on the heating-up time to obtain a first deformation stage and a second deformation stage; wherein, the first deformation stage is used to reflect the deformation situation of the fusible link from the time point when 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 situation of the fusible link from the time point when the hot air output by the heat source device reaches the response temperature to the preset time.

[0063] It can be understood that according to the hot air heating-up time and the deformation process of the fusible link, the process after the fusible link deforms is divided into two stages. The first deformation stage focuses on the deformation situation of the fusible link from the start of deformation to when the hot air reaches the response temperature. In 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 when the hot air reaches the response temperature to the preset time. At this time, the fusible link may accelerate deformation or accelerate deformation after reaching the response temperature.

[0064] S42322, analyzing according to the first deformation stage to obtain a first deformation rate; wherein, the first deformation rate is used to reflect the maximum rate of the fusible link deformation.

[0065] It can be understood that in the first deformation stage, the deformation information of the fusible piece is deeply analyzed. By calculating the ratio of the shape change amount of the fusible piece at different times to the corresponding time interval, the maximum change rate is found, and this maximum change rate is the first deformation rate. It reflects the fastest possible deformation speed of the fusible piece during the process of the hot air heating up to the response temperature, and embodies the sensitivity to heat and the rapid response ability of the fusible piece in this stage.

[0066] S42323. Analyze according to the second deformation stage to obtain the second deformation rate; wherein, the second deformation rate is used to reflect the average rate of deformation of the fusible piece.

[0067] It can be understood that in the second deformation stage, the total deformation degree of the fusible piece in this stage is divided by the time experienced in this stage, and the result obtained is the second deformation rate. Since the deformation process of the fusible piece in the second deformation stage is relatively complex, there may be different changes such as acceleration and deceleration. By calculating the average rate, the overall deformation speed of the fusible piece in this stage can be comprehensively reflected, providing a basis for evaluating the thermal response performance of the fusible piece after reaching the response temperature.

[0068] S42324. Obtain the dynamic response rate based on the first deformation rate and the second deformation rate.

[0069] Exemplarily, the weight of the first deformation rate can be obtained through the total time of the first deformation stage, the weight of the second deformation rate can be obtained through the total time of the second deformation stage, and then 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 weighted summation is performed to obtain the dynamic response rate, etc., but not limited to this.

[0070] With such a setting, the first deformation rate and the second deformation rate reflect the deformation speed characteristics of the fusible piece in the thermal response process from different angles and different stages. Considering these two rates comprehensively, through a certain calculation method (such as weighted average, etc.), a dynamic response rate that can more comprehensively represent the fusible piece in the entire deformation process can be obtained, making the evaluation of the thermal response speed of the fusible piece more accurate and reasonable.

[0071] In a possible implementation manner, in step S42324, obtaining the dynamic response rate based on the first deformation rate and the second deformation rate includes: S423241. Obtain the first weight based on the first time ratio corresponding to the first deformation rate; wherein, the first time ratio is used to indicate the ratio of the time from the time point when the fusible piece starts to deform 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 piece starts to deform to the preset time.

[0072] It can be understood that the first time ratio is the ratio of the time experienced by the fusible link in the first deformation stage to the total time from the occurrence of deformation to the preset time. Different first time ratios correspond to a first weight, and the larger the first time ratio, the higher the first weight. The first time ratio can be matched in the test database to obtain the corresponding first weight; or the first time ratio can be input into the learning model, and the learning model outputs the corresponding first weight, and so on, but not limited to this.

[0073] S423242, obtaining a second weight based on the 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 preset time to the time from the time point of occurrence of deformation to the preset time.

[0074] It can be understood that the second time ratio is the ratio of the time experienced by the second deformation stage to the total time from the occurrence of deformation to the preset time. Different second time ratios correspond to a second weight, and the larger the second time ratio, the higher the second weight. The second time ratio can be matched in the test database to obtain the corresponding second weight; or the second time ratio can be input into the learning model, and the learning model outputs the corresponding second weight, and so on, but not limited to this.

[0075] S423243, weighting the first deformation rate based on the first weight, weighting the second deformation rate based on the second weight, and summing to obtain the dynamic response rate.

[0076] It can be understood that the dynamic response rate = first weight × first deformation rate + second weight × second deformation rate.

[0077] With such a setting, by calculating the dynamic response rate through weighted summation of the first deformation rate and the second deformation rate, the time proportion and deformation rate characteristics of the fusible link in different deformation stages are fully considered, making the calculation result more accurately reflect the thermal response speed of the fusible link in the actual heating process, improving the accuracy and reliability of the thermal response speed analysis, and providing strong support for accurately evaluating the thermal response performance of the fire damper.

[0078] S424, analyzing according to the static response time and the dynamic response rate to obtain the thermal response speed.

[0079] Exemplarily, the response characteristics of the fusible link during the continuous heating process can be evaluated according to the static response time, and then the thermal response speed can be comprehensively obtained according to the corresponding rate after the fusible link deforms; or the static response time and the dynamic response rate can be input into the learning model, and the learning model then outputs the corresponding thermal response speed, and so on, but not limited to this.

[0080] With such a setting, the spatio-temporal feature chain is segmented at the time point when the fusible link deforms, and a deformation static response chain and a deformation dynamic response chain are obtained respectively. This segmentation method helps to clearly divide different stages of the thermal response of the fusible link. In practical applications, by determining the duration of the deformation static response chain as the static response time, it is possible to intuitively understand the time experienced by the fusible link during the initial stage of heating when no obvious deformation occurs, which is crucial for evaluating the preheating characteristics of the fusible link in different environments. For example, in different ventilation duct environments, the initial temperature and flow rate of the hot air are different, and the static response time will vary; analyzing the deformation dynamic response chain to obtain the dynamic response rate can accurately quantify how quickly the fusible link responds after deformation. During a fire, the dynamic response rate of the fusible link is directly related to whether the fire damper can start the closing action in time. By accurately calculating the change rate of the shape of the fusible link with time in the dynamic response chain, it is possible to provide a scientific basis for evaluating the response timeliness of the fire damper in different fire scenarios; combining the static response time and the dynamic response rate to determine the thermal response speed makes the evaluation result more comprehensive and accurate. It fully considers the entire process of the fusible link from heating to deformation and then to possible melting eventually, and organically combines the static response time and the dynamic response rate. This can not only more accurately reflect the thermal response performance of the fusible link in actual use, but also provide more reliable reference data for the design, selection, and quality inspection of the fire damper, which helps to improve the reliability and stability of the fire damper in actual fire protection applications.

[0081] In a possible implementation manner, in step S424, analyzing according to the static response time and the dynamic response rate to obtain the thermal response speed includes: S4241, analyzing according to the static response time to obtain a thermal response coefficient.

[0082] It can be understood that different static response times correspond to a thermal response coefficient. The thermal response coefficient is a quantitative manifestation of the static response time in evaluating the thermal response speed, and it reflects the influence degree of the static response time on the thermal response speed. Exemplarily, the static response time can be matched in the test database to obtain the corresponding thermal response coefficient, or the static response time can be input into the learning model, and the learning model outputs the corresponding thermal response coefficient, etc., but not limited thereto.

[0083] S4242, correcting the dynamic response rate based on the thermal response coefficient to obtain the thermal response speed.

[0084] It can be understood that the thermal response speed = thermal response coefficient × dynamic response rate.

[0085] With such a setting, the dynamic response rate is corrected by introducing a thermal response coefficient to obtain the thermal response speed, fully considering the mutual 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.

[0086] S500, the control device controls the heat source device to ventilate towards the second valve port based on the test parameters until the blade is 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 states of the fusible link and the blade.

[0087] It can be understood that the control device sends an instruction to the heat source device again, so that the heat source device conveys hot air from the second valve port to the fire damper according to the previously determined test parameters, that is, at the same wind 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, and then trigger the valve to close. The fire damper image can be obtained by an imaging device such as a camera.

[0088] S600, analyze based on multiple fire damper images to obtain the mechanical response speed.

[0089] It can be understood that analyze multiple fire damper images taken at different times, and use image processing and action recognition technologies to identify the state changes of the fusible link and the valve in the images. Exemplarily, by analyzing information such as the time point when the fusible link melts and the position and posture changes of the valve during the start of action and the closing process, the time elapsed from the melting of the fusible link to the complete closing of the valve can be calculated, so as to obtain the mechanical response speed of the fire damper; or multiple fire damper images can be input into a learning model, and the learning model outputs the corresponding mechanical response speed.

[0090] In a possible implementation manner, in step S600, analyzing based on multiple fire damper images to obtain the mechanical response speed includes: S610, analyze based on multiple fire damper images to obtain the fusible link response information and the blade response information; wherein, the fusible link response information is used to reflect the time from the start of heating of the fusible link to its melting, 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.

[0091] It can be understood that through frame-by-frame analysis of the fire damper images, using image recognition algorithms, extract the characteristic changes of the fusible link in the images, and determine the time from the start of heating of the fusible link to the appearance of signs of melting, which is the fusible link response information. At the same time, track the actions of the valve in the images, and record the time information from the moment the fusible link melts until the valve starts to act and is completely closed, as the valve response information.

[0092] S620. Analyze based on the fusible link response information and the blade response information to obtain the mechanical response speed.

[0093] Exemplarily, the mechanical response speed can be obtained by accumulating the times corresponding to the fusible link response information and the blade response information and then processing the total accumulated time; or the total accumulated time can be directly used as the mechanical response speed, etc., but not limited thereto.

[0094] With such a setting, the fusible link response information and the blade response information fully reflect the duration of the entire mechanical response process from the start of the fusible link being heated and triggered to the final closing of the valve by the fire damper, and can intuitively and comprehensively measure the mechanical response efficiency of the fire damper.

[0095] In a possible implementation manner, in step S620, analyzing based on the fusible link response information and the blade response information to obtain the mechanical response speed includes: S621. Accumulate the fusible link response information and the blade response information in terms of time to obtain the total running time.

[0096] It can be understood that the total running time = fusible link response information + blade response information.

[0097] S622. Obtain the mechanical response speed based on the total running time.

[0098] Exemplarily, the difference degree between this test and the actual fire scene can be evaluated according to the test parameters, and the total running time can be adjusted according to the difference degree to obtain the final time as the mechanical response speed; or the total running time can be directly used as the mechanical response speed, etc., but not limited thereto.

[0099] With such a setting, the total running time is the complete time period from the fire damper sensing the fire heat signal to completing the closing action, and can intuitively and comprehensively integrate the time data of the heat response and mechanical response stages of the fire damper.

[0100] In a possible implementation manner, in step S622, obtaining the mechanical response speed based on the total running time includes: S6221. Perform redundant matching based on the test parameters to obtain a redundancy coefficient.

[0101] It can be understood that the redundancy coefficient reflects the proportion by which the response time of the fire damper may increase compared to the ideal test environment in the actual complex environment. Different test parameters correspond to a redundancy coefficient. Exemplarily, the corresponding redundancy coefficient can be obtained by matching the test parameters in the test database, or the test parameters can be input into a learning model, and the learning model outputs the corresponding redundancy coefficient, etc., but not limited thereto.

[0102] S6222. The total operating time is corrected based on the redundancy coefficient and used as the mechanical response speed.

[0103] It can be understood that the mechanical response speed = redundancy coefficient × total operating time.

[0104] With such a setting, through the redundancy coefficient, the influence of various interference factors that may occur in actual situations on the response time can be simulated, so as to obtain a mechanical response speed that is more in line with the actual application scenario.

[0105] S700. The thermal response speed and the mechanical response speed are integrated to obtain the fire damper response parameter; wherein, the fire damper response parameter is used to indicate the set of the thermal response speed and the mechanical response speed.

[0106] It can be understood that the fire damper response parameter includes the thermal response speed and the mechanical response speed.

[0107] With such a setting, by obtaining the use scenario information to match the test parameters, simulating the actual working conditions, and using image analysis to obtain the thermal response speed and the mechanical response speed respectively, and then determining the fire damper response parameter, the performance of the fire damper can be comprehensively and accurately evaluated. In the analysis of the thermal response speed, by means of time series feature extraction, feature chain segmentation, phased analysis of the deformation rate and weighted calculation, etc., the thermal response characteristics of the fusible link are deeply analyzed; the analysis of the mechanical response speed measures the mechanical action efficiency of the valve accurately by obtaining the response information of the fusible link and the blade, time accumulation and redundancy correction, improving the test accuracy and reliability.

[0108] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0109] Corresponding to the fire damper response speed test method described in the above embodiments, the embodiments of the present application also provide a fire damper response speed test system, and each module of the system can implement each step of the fire damper response speed test method. Figure 3 The structural block diagram of the fire damper response speed test system provided by the embodiments of the present application is shown. For the sake of convenience of description, only the parts related to the embodiments of the present application are shown.

[0110] Refer to Figure 3 , the fire damper response speed test system includes: An acquisition module, configured to acquire use scenario information; wherein, the use scenario information is used to reflect the environment in which the fire damper actually operates.

[0111] A matching module, configured to match corresponding test parameters based on the use scenario information; wherein, the test parameters are used to reflect the heating rate, wind speed and response temperature of the hot air.

[0112] The first control acquisition module is configured to control the device to control the heat source device to ventilate towards the first valve port based on the test parameters for a preset time, and to acquire the fusible link image 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 when the hot air output by the heat source device rises to the response temperature at the heating rate.

[0113] The first analysis module is configured to analyze based on multiple fusible link images to obtain the heat response speed.

[0114] The second control acquisition module is configured to control the device to control the heat source device to ventilate towards the second valve port based on the test parameters until the blade closes, and to acquire 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 states of the fusible link and the blade.

[0115] The second analysis module is configured to analyze based on multiple fire damper images to obtain the mechanical response speed.

[0116] The integration module is configured to integrate the heat 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 set of the heat response speed and the mechanical response speed.

[0117] It should be noted that, for the information interaction, execution process, etc. among the above modules, since they are based on the same concept as the method embodiment of the present application, for their specific functions and the technical effects brought, reference can be specifically made to the method embodiment part, and details are not described herein again.

[0118] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of each module is used as an example for illustration. In practical applications, the above functions can be allocated to different modules according to needs, that is, the internal structure of the system is divided into different modules to complete all or part of the functions described above. Each module in the embodiment can be integrated in a processing unit, or each module can exist physically alone, or two or more modules can be integrated in a 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 mutual distinction and do not limit the protection scope of the present application. The specific working process of the modules in the above system can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

[0119] The embodiment of the present application further provides a fire damper response speed test device, including a heat source device and a control device, and the control device is electrically connected to the heat source device. Figure 4 It is a schematic structural diagram of the control device 6 provided in an embodiment of the present application. AsFigure 4 As shown, the control device 6 of this embodiment includes: at least one processor 60 ( Figure 4 only one is shown in the figure), 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 operable on the at least one processor 60. When the processor 60 executes the computer program 62, the control device 6 implements the steps in any of the above-described embodiments of the fire damper response speed test method, or the functions of the various modules in the above-described system embodiments are implemented in the control device 6.

[0120] Exemplarily, the computer program 62 may be divided into one or more modules / units, and the one or more modules / units are stored in the memory 61 and executed by the processor 60 to complete this application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and these instruction segments are used to describe the execution process of the computer program 62 in the control device 6.

[0121] The control device 6 may be a computing device such as a desktop computer, a notebook, a palm computer, or a cloud server. The fire damper response speed test device may include, but is not limited to, the processor 60 and the memory 61. Those skilled in the art can understand that Figure 4 this is only an example of the control device 6 and does not constitute a limitation on the control device 6. It may include more or fewer components than shown in the figure, or combine some components, or different components. For example, it may also include input / output devices, network access devices, a bus, etc.

[0122] The processor 60 may be a central processing unit (CPU), and the processor 60 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0123] The memory 61 may be an internal storage unit of the control device 6 in some embodiments, such as a hard disk or memory of the control device 6. The memory 61 may also be an external storage device of the control device 6 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the control device 6. Further, the memory 61 may also include both an 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 BootLoader, data, and other programs, such as program codes of the computer program. The memory 61 may also be used to temporarily store data that has been output or will be output.

[0124] An embodiment of the present application also provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0125] An embodiment of the present application provides a computer program product, and when the computer program product runs on a fire damper response speed testing device, the fire damper response speed testing device implements the steps in any of the above method embodiments.

[0126] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, all or part of the processes in the above method embodiments of the present application can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps in the above method embodiments can be implemented. Among them, the computer program includes computer program codes, and the computer program codes can be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to the fire damper response speed testing device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk, or an optical disc, etc.

[0127] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0128] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0129] In the embodiments provided in this application, it should be understood that the disclosed fire damper response speed testing equipment and system can be implemented in other ways. For example, the fire damper response speed testing system embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be an indirect coupling or communication connection through some interfaces, devices or modules, and can be in an electrical, mechanical or other form.

[0130] The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they can be located in one place, or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included in the protection scope of this application.

Claims

1. A method for testing the response speed of a fire damper, characterized in that, Including: Obtain usage scenario information; wherein, the usage scenario information is used to reflect the environment in which the fire damper actually operates. Match corresponding test parameters based on the usage scenario information; wherein, the test parameters are used to reflect the heating rate, wind speed, and response temperature of the hot air. The control device controls the heat source device to ventilate towards 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 where the blade is away from the fusible link, and the moment corresponding to the preset time is greater than the moment when the hot air output by the heat source device rises to the response temperature at the heating rate. Analyze based on multiple images of the fusible link to obtain the thermal response speed. The control device controls the heat source device to ventilate towards the second valve port based on the test parameters until the blade closes, and obtains the image of the fire damper 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 image of the fire damper is used to reflect the states of the fusible link and the blade. Analyze based on multiple images of the fire damper to obtain the mechanical response speed. 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 set of the thermal response speed and the mechanical response speed.

2. The method for testing the response speed of a fire damper according to claim 1, wherein The step of analyzing based on multiple images of the fusible link to obtain the thermal response speed includes: Extract temporal and spatial features from multiple images of the fusible link to obtain a spatio-temporal feature chain; wherein, the spatio-temporal feature chain is used to reflect the state of the shape of the fusible link changing over time. Analyze based on the spatio-temporal feature chain to obtain the thermal response speed.

3. The method for testing the response speed of the fire damper according to claim 2, wherein, The step of analyzing based on the spatio-temporal feature chain to obtain the thermal response speed includes: Segment the spatio-temporal feature chain at the time point when the fusible link deforms to obtain a deformation static response chain and a deformation dynamic response chain; wherein, the deformation static response chain is before the time point when the fusible link deforms, and the deformation dynamic response chain is after the time point when the fusible link deforms. Take the elapsed time of the deformation static response chain as the static response time. Analyze based on the deformation dynamic response chain to obtain the dynamic response rate. Analyze based on the static response time and the dynamic response rate to obtain the thermal response speed.

4. The method for testing the response speed of a fire damper according to claim 3, wherein, The step of analyzing based on the deformation dynamic response chain to obtain the dynamic response rate includes: Analyze based on 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 time of deformation to the preset time. Analyze the deformation information based on the heating time to obtain the dynamic response rate.

5. The method for testing the response speed of the fire damper according to claim 4, wherein The step of analyzing the deformation information based on the heating time to obtain the dynamic response rate includes: Divide the deformation information into stages based on the heating-up time to obtain a first deformation stage and a second deformation stage. Among them, the first deformation stage is used to reflect the deformation condition of the fusible link from the time point when deformation occurs to the time point when the hot air output by the heat source device reaches the response temperature. The second deformation stage is used to reflect the deformation condition of the fusible link from the time point when the hot air output by the heat source device reaches the response temperature to the preset time. Analyze according to the first deformation stage to obtain a first deformation rate. Among them, the first deformation rate is used to reflect the maximum rate of deformation of the fusible link. Analyze according to the second deformation stage to obtain a second deformation rate. Among them, the second deformation rate is used to reflect the average rate of deformation of the fusible link. Obtain a dynamic response rate based on the first deformation rate and the second deformation rate.

6. The method for testing the response speed of the fire damper according to claim 5, characterized in that, The obtaining of the dynamic response rate based on the first deformation rate and the second deformation rate includes: Obtain a first weight based on a first time ratio corresponding to the first deformation rate. Among them, the first time ratio is used to indicate the ratio of the time from the time point when the fusible link starts to deform 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 starts to deform to the preset time. Obtain a second weight based on a second time ratio corresponding to the second deformation rate. Among them, 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 preset time to the time from the time point when deformation occurs to the preset time. Weight the first deformation rate based on the first weight, weight the second deformation rate based on the second weight, and obtain the dynamic response rate after summing.

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

8. The method for testing the response speed of the fire damper according to claim 1, wherein The analysis based on multiple fire damper images to obtain the mechanical response speed includes: Analyze according to multiple fire damper images to obtain fusible link response information and blade response information. Among them, the fusible link response information is used to reflect the time from when the fusible link starts to be heated to when it melts. The blade response information is used to reflect the time from when the fusible link melts to when the blade is fully closed. Analyze according to the fusible link response information and the blade response information to obtain the mechanical response speed.

9. The method for testing the response speed of a fire damper according to claim 8, characterized in that, The analysis based on the fusible link response information and the blade response information to obtain the mechanical response speed includes: Accumulate the time of the fusible link response information and the blade response information to obtain the total operation time. Obtain the mechanical response speed based on the total operation time.

10. The method for testing the response speed of the fire damper according to claim 9, wherein The obtaining of the mechanical response speed based on the total operation time includes: Perform redundant matching based on the test parameters to obtain a redundancy coefficient. Correct the total operation time based on the redundancy coefficient and use it as the mechanical response speed.

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