Goods shelf fire test system and data acquisition method

Abstract

The invention provides a goods shelf fire test system and a data acquisition method, and belongs to the technical field of fire automatic alarm system early warning and monitoring, and the system comprises a fixed goods shelf fire test device which is used for constructing a fixed goods shelf to be subjected to a fire test; the optical smoke density tester is used for acquiring an optical smoke density value of smoke in a fire test process; the video image acquisition module is used for acquiring video images in the fire test process of the fixed goods shelf in the fire test process; the temperature field acquisition module is used for acquiring the temperature of the ignition point of the fire scene and the space temperature in the fire test process; the air-breathing smoke-sensing fire test module, the pipeline-type shelf fire detection module and the point-type smoke-sensing fire detection module are respectively used for collecting smoke concentrations in different time periods. The system can more accurately simulate the whole process of the goods shelf fire, shortens the test period, and reduces the test cost and the risk coefficient.

Description

Technical Field

[0001] The present application belongs to the technical field of early warning monitoring of automatic fire alarm systems, and specifically relates to a shelf fire test system and a data acquisition method. Background Art

[0002] With the rapid development of modern warehousing and logistics industry, the scale and complexity of shelf systems are increasing, and the risk of fire is also increasing. Once a shelf fire occurs, it often causes huge property losses and casualties. Therefore, the prevention and control of shelf fires is particularly important.

[0003] Traditional methods of studying shelf fires are mainly to observe and analyze the fire process through actual fire tests or full-scale simulation tests. However, these methods have many limitations, such as long test cycles, high costs, high safety risks, and difficulty in accurately controlling test conditions. Therefore, researchers began to explore new test methods and technical means to better simulate and analyze shelf fire behavior. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application proposes a shelf fire test system and a data acquisition method.

[0005] In a first aspect, the present application proposes a shelf fire test system, comprising:

[0006] A fixed shelf fire test device is used to construct a fixed shelf to be fire tested;

[0007] Optical smoke density tester, used to obtain optical smoke density values ​​during fire tests;

[0008] A video image acquisition module, used for acquiring video images of a fixed shelf fire test during the fire test;

[0009] The temperature field acquisition module is used to collect the temperature at the ignition point and the space temperature during the fire test;

[0010] Aspiration smoke fire test module, used to collect smoke concentration in the first time period at the beginning of the fire test;

[0011] A pipeline rack fire detection module is used to collect smoke concentration in a second time period at the beginning of the fire test;

[0012] The point-type smoke fire detection module is used to collect smoke concentration within a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0013] The fixed shelf fire test device comprises one group of shelves or multiple groups of shelves, each group of shelves is provided with a layer of beams and mesh layer plates at a first preset distance, and each layer of mesh layer plates is an upper layer plate.

[0014] The optical smoke density tester comprises at least two, one optical smoke density tester is installed at 1 / 2 height of the fixed shelf fire test device, and the other optical smoke density tester is installed at the top of the fixed shelf fire test device.

[0015] The video image acquisition modules include at least two, one video image acquisition module is used to acquire the front video image of the fixed shelf fire test device during the fire test, and the other video image acquisition module is used to acquire the back video image of the fixed shelf fire test device during the fire test.

[0016] The temperature field acquisition module includes a high-temperature thermocouple and a wind temperature thermocouple. The high-temperature thermocouple is installed in the fire scene of the fire test and is used to collect the temperature at the ignition point in the center of the fire scene. The wind temperature thermocouple is installed at different mesh layers of the fixed shelf fire test device and is used to collect the spatial temperature at different positions during the fire test.

[0017] The aspiration smoke fire test module includes multiple smoke collection units, which collect smoke concentration in a first time period at the beginning of the fire test in sampling holes in a pre-arranged pipe network through the smoke collection units. The pre-arranged pipe network is a double-pipeline or four-pipeline pipe network pre-arranged on a fixed shelf fire test device, and a sampling hole is opened at a second preset distance in each vertical pipe.

[0018] The pipeline rack fire detection module includes a plurality of first detectors, which collect smoke concentration in a second time period at the beginning of a fire test in sampling holes in a pre-arranged pipe network through the first detectors. One first detector is used in each pipe, and the sampling pipe networks between the first detectors are isolated from each other.

[0019] The point-type smoke fire detection module includes two groups of second detectors. The first group of second detectors is distributed and installed at 1 / 2 height of the fixed shelf fire test device, and the second group of second detectors is distributed and installed at the top of the fixed shelf fire test device.

[0020] In a second aspect, the present application proposes a method for collecting test data of a shelf fire test, which is implemented by using the shelf fire test system of the first aspect, and includes:

[0021] Obtaining optical smoke density values ​​during fire testing;

[0022] Acquire video images of the fixed shelf fire test device during the fire test;

[0023] The temperature at the fire point and the space temperature during the fire test;

[0024] Collect smoke concentration during the first period of time at the beginning of the fire test;

[0025] Smoke concentration is collected during the second time period at the beginning of the fire test;

[0026] The smoke density is collected in a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0027] The shelf fire test data collection method further includes:

[0028] Processing and converting the optical smoke density value, the video image, the temperature at the fire point, the space temperature, the smoke density in the first time period, the smoke density in the second time period, and the smoke density in the third time period;

[0029] The results of processing and conversion are sent to the analysis and testing terminal.

[0030] Beneficial effects:

[0031] The present application proposes a shelf fire test system and data collection method, which can more accurately simulate the entire process of shelf fire, shorten the test cycle, reduce the test cost and risk factor, and can accurately collect various data during the fire process in real time, providing reliable data guarantee for shelf fire research. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a shelf fire test system according to an embodiment of the present application;

[0033] Figure 2 A top view of a shelf in an embodiment of the present application;

[0034] Figure 3 Elevation diagram of the shelf in the embodiment of the present application;

[0035] Figure 4 Real-life picture of the shelf in the embodiment of the present application;

[0036] Figure 5 Installation position diagram of the optical smoke density tester of the embodiment of the present application;

[0037] Figure 6 Layout diagram of the video image acquisition module in the embodiment of the present application;

[0038] Figure 7 A diagram showing the location of the temperature field acquisition module in an embodiment of the present application;

[0039] Figure 8 Layout diagram of the aspirating smoke fire test module in the embodiment of the present application;

[0040] Fig. 9 The system architecture of the pipeline rack fire detection module in the embodiment of the present application;

[0041] Fig.10 Pipeline layout diagram of the pipeline rack fire detection module in the embodiment of the present application;

[0042] Fig.11 Pipeline layout diagram of the point-type smoke fire detection module of the embodiment of the present application;

[0043] Fig.12 TF5A / B fuel layout diagram of the embodiment of the present application;

[0044] Fig.13 Figure 1 of the n-heptane field test of the embodiment of the present application;

[0045] Fig.14 Comparison of smoke reduction coefficients of two n-heptane test fires in the present application embodiment;

[0046] Among them, 1-crossbeam, 2-mesh plate, 3-column, 4-optical smoke density tester, 5-video image acquisition module, 6-temperature field acquisition module, 7-sampling hole, 8-pipeline, 9-first detector, 10-end cap, 11-second detector, 12-container, 13-container base. DETAILED DESCRIPTION

[0047] The specific implementation of the present application is further described in detail below in conjunction with the drawings and examples.

[0048] This application proposes a shelf fire test system and data acquisition method. By reducing the scale of the test, reducing the test cost and safety risks, and using similar principles, the conditions and processes of real shelf fires are simulated as much as possible. Through carefully designed test equipment and control systems, researchers can accurately control various parameters of the fire, such as temperature, smoke density, etc., to study the spread and characteristics of shelf fires under different conditions. At the same time, data acquisition methods also play a vital role in shelf fire tests. With the continuous development of sensor technology, image processing technology and computer technology, researchers can collect various data in the fire process in real time and accurately, such as temperature, smoke concentration, flame images, etc. By analyzing and processing these data, we can gain an in-depth understanding of the combustion characteristics, spread laws, and effectiveness of fire extinguishing measures of shelf fires.

[0049] Therefore, a shelf fire test system and data acquisition method are developed to better simulate and analyze shelf fire behavior and provide strong support for improving the fire prevention and control capabilities of storage facilities, in response to the urgent need for shelf fire prevention and control research, combined with the latest progress and technical means in fire science research.

[0050] Embodiment 1:

[0051] This embodiment provides a shelf fire test system. Figure 1 As shown, including:

[0052] A fixed shelf fire test device is used to construct a fixed shelf to be fire tested;

[0053] Optical smoke density tester, used to obtain optical smoke density values ​​during fire tests;

[0054] A video image acquisition module, used to acquire video images of the fixed shelf fire test device during the fire test;

[0055] The temperature field acquisition module is used to collect the temperature at the ignition point and the space temperature during the fire test;

[0056] Aspiration smoke fire test module, used to collect smoke concentration in the first time period at the beginning of the fire test;

[0057] A pipeline rack fire detection module is used to collect smoke concentration in a second time period at the beginning of the fire test;

[0058] The point-type smoke fire detection module is used to collect smoke concentration within a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0059] In this embodiment, the first time period at the beginning of the fire test is the very early stage of the fire, which should be earlier than the second time period in chronological order. The second time period is the early stage of the fire, which should be earlier than the third time period in chronological order. The third time period is also the early stage of the fire, but it is later than the second time period. A shelf fire test system can truly reproduce the scene of the shelf fire, obtain the law of fire smoke spread, study the technical parameters such as the layout of the shelf fire detector pipeline, the location of the sampling hole, the aperture size, etc., determine the fire detection location and detection sensitivity, and provide basic support for the technical development, engineering design and installation technology of shelf fire detectors.

[0060] The fixed shelf fire test device comprises one group of shelves or multiple groups of shelves, each group of shelves is provided with a layer of cross beams 1 and mesh layer plates 2 at a first preset distance, and each layer of mesh layer plates 2 is an upper layer plate.

[0061] In the specific implementation, two sets of shelves are designed according to the plane layout of the space fire laboratory of the institute. The top view is as follows: Figure 2 As shown. Group A shelves are 3m long and 1m wide; Group B shelves are 6m long and 1m wide. The elevations of the two groups of shelves are shown as follows: Figure 3 As shown, the actual shelf scene is as follows Figure 4 As shown. The height of the A group of shelves is 8m, and a layer of beams 1 and mesh panels 2 are set every 1m (the first preset distance in this embodiment is 1m), and a total of 7 layers of mesh panels 2 are set. The highest point of the B group of shelves is 8m, and a layer of beams 1 and mesh panels 2 are set every 1m, and a total of 7 layers of mesh panels 2 are set. Each layer of mesh panels 2 is designed to be a man-accessible layer to facilitate the installation of collection equipment, and each shelf also includes a column 3 that plays a supporting role.

[0062] The optical smoke density tester 4 includes at least two, one is installed at 1 / 2 height of the fixed shelf fire test device, and the other optical smoke density tester 4 is installed at the top of the fixed shelf fire test device.

[0063] In this embodiment, the optical smoke density tester 4 is an instrument for completing the optical smoke density value test. The device model is Lorenz AMI. The device measures the smoke concentration by using the principle that after the light beam is affected by smoke particles, the light radiation energy decays according to the exponential law. The device uses the contrast light method to measure the jet passing through the absorption distance and being projected backward by the reflector to the measuring light sensor, thereby passing through the absorption distance again. In addition to the measuring light, a beam of contrast light is also detected to compensate for the change in the intensity of the measuring light source. A total of 2 sets of optical smoke density testers 4 are installed on the shelf, and their specific installation positions are as follows: Figure 5 As shown, one optical smoke density tester 4 is installed at 4m of the shelf, and another optical smoke density tester 4 is installed at 8m.

[0064] The smoke density is measured using the principle that light radiation can decay exponentially, where the attenuation coefficient m is calculated as follows:

[0065] m=(10 / d)×1g(p0 / p)

[0066] Among them, the tolerance is m·5%+0.02dB / m, m is the attenuation coefficient unit dB / m, d is the optical measurement length unit of the test smoke in m, p0 is the radiation power received when there is no smoke in W, and p is the radiation power received when there is smoke in W.

[0067] The video image acquisition module 5 includes at least two, one video image acquisition module 5 is used to acquire the front video image of the fixed shelf fire test device during the fire test, and the other video image acquisition module 5 is used to acquire the back video image of the fixed shelf fire test device during the fire test.

[0068] In this embodiment, the video image acquisition module 5 is composed of key parts such as a Sony high-definition camera, an image sensor, a data processing unit, and a transmission interface, and is arranged on the east and west walls of the laboratory, respectively, at a height of 4m and 8m from the ground. Figure 6 As shown, it can collect all kinds of situations in the laboratory from all directions and angles, whether it is a complex experimental operation process or the operating status of instruments and equipment, it can be accurately recorded. Its high frame rate and high resolution ensure that no key moments will be missed in the rapidly changing experimental scene.

[0069] The temperature field acquisition module 6 includes a high-temperature thermocouple and a wind temperature thermocouple. The high-temperature thermocouple is installed in the fire scene of the fire test to collect the temperature at the ignition point in the center of the fire scene. The wind temperature thermocouple is installed at different mesh layers 2 of the fixed shelf fire test device to collect the spatial temperature at different positions during the fire test.

[0070] In this embodiment, the temperature field acquisition module 6 is composed of a control unit, a high-temperature thermocouple, and a wind-temperature thermocouple, etc., wherein the control unit is mainly used to detect the ignition point and space temperature of the test site fire scene, and uses its built-in data acquisition unit to complete the test site temperature information data acquisition, and transmits the temperature data information to the data processing module through the interface circuit to complete the temperature information acquisition task; the high-temperature thermocouple is arranged in the test site fire scene to test the temperature at the ignition point in the center of the fire scene; the wind-temperature thermocouple is arranged at different shelf positions to test the temperature at different positions. The layout diagram is shown in FIG. Figure 7 shown.

[0071] The aspiration smoke fire test module includes multiple smoke collection units, which collect smoke concentration in a first time period at the beginning of the fire test in sampling holes 7 in a pre-arranged pipe network. The pre-arranged pipe network is pre-arranged with two pipes 8 or four pipes 8 on a fixed shelf fire test device, and a sampling hole 7 is opened at a second preset distance in each vertical pipe.

[0072] In this embodiment, the aspirating smoke fire test module is composed of an aspirating smoke fire detection control host and a sampling pipe network, wherein the aspirating smoke fire test module control host is composed of a suction pump, a smoke collection unit, a data analysis unit and an alarm device. Generally, the aspirating smoke fire test module control host adopts a double pipe 8 or a four pipe 8, and the number of pipes is determined according to the actual scene of the shelf. The pipe network layout is as follows: Figure 8As shown in the figure, a suction pump is opened at 4m and 8m of each vertical pipeline to extract air samples from the monitored area through the sampling pipe network and transport them to the detection host. Once the system determines that the smoke concentration exceeds the preset safety threshold, the alarm device will immediately issue an audible and visual alarm to warn relevant personnel. At the same time, the system also has a linkage function with the fire control system, which can automatically start the fire extinguishing equipment or take other emergency measures in an emergency.

[0073] The pipeline rack fire detection module includes a plurality of first detectors 9, which collect smoke concentration in a second time period at the beginning of the fire test in sampling holes 7 in a pre-arranged pipe network through the first detectors 9. One first detector is used in each pipe, and the sampling pipe networks between the first detectors 9 are isolated from each other.

[0074] In this embodiment, the pipeline rack fire detection module is mainly composed of a pipeline rack fire detection host and its detection pipeline, wherein the detection host has a monitoring function and does not have a sensing detection capability. The detection host outputs an alarm signal to a dedicated fire alarm controller. The first detector 9 has multiple ones, which communicate with the host in the form of a bus, and its architecture is as follows Fig. 9 As shown. It has the characteristics of low cost to prevent the overall system cost from rising, and each detector is only responsible for detection within a small area, acting as a positioning component, and the sampling pipe networks between the first detectors 9 are isolated from each other, and the arrangement is as follows Fig.10 As shown, an end cap 10 is mounted on the end of the tube.

[0075] The point-type smoke fire detection module includes two groups of second detectors 11. The first group of second detectors 11 are distributed and installed at 1 / 2 height of the fixed shelf fire test device, and the second group of second detectors 11 are distributed and installed at the top of the fixed shelf fire test device.

[0076] In this embodiment, the point-type smoke fire detection module is composed of a fire alarm controller and a photoelectric point-type smoke fire detector. Seven second detectors 11 are installed at 4m on the shelf, and seven second detectors 11 are installed at 8m. Fig.11 As shown. The detector is mainly used to detect the smoke concentration in the test site. The data processing unit is used to complete the data collection and analysis of the smoke concentration information. The relevant data information is transmitted to the control center through the signal transmission circuit to complete the detection task of the smoke concentration information. The second detector 11 can keenly sense the presence of smoke particles and convert them into electrical signals. The data processing unit processes and calculates these electrical signals to determine whether the smoke concentration reaches the preset alarm threshold. When it reaches or exceeds the threshold, it will send a fire alarm signal to the fire alarm controller. After judgment, the controller will give a forecast of whether it is a real fire alarm.

[0077] Comparison of SH2 and TF3A / B tests, comparison of fuel, heating plate, arrangement, heating rate and test end conditions of national standard test fire n-heptane open flame SH4 and EN 54-20 test fire small size n-heptane open flame TF5A / B are shown in the table.

[0078] Table 1 Comparison between SH4 and TF5A / B

[0079]

[0080]

[0081] For the "standard test fire" and "reduced scale test fire" (fuel 300ml-TF5B) on-site test pictures are as follows Fig.13 In the test shown, the smoke reduction coefficient of the two test fires is compared. Fig.14 As shown. Fig.13 and Fig.14 It can be concluded from the analysis that: the "reduced-scale test fire" - the smoke concentration of the fuel 200ml fire is the lowest, the dimmer coefficient is lower than 0.1dB / m, and all three fire detectors do not alarm; the "reduced-scale test fire" - the smoke concentration of the fuel 300ml fire is lower than that of the "standard test fire", the dimmer coefficient is lower than 0.2dB / m, and the dimmer coefficient of the "standard test fire" can reach up to 0.6~0.8 (dB / m).

[0082] The shelf fire test system proposed in this application belongs to the following funded project: Early Accurate Identification Technology and Demonstration of Fire Signs in Public Buildings (Project No.: 2021YFC3001600). A fixed shelf fire test device is used to construct a fixed shelf to be tested for fire; an optical smoke density tester is used to obtain the optical smoke density value during the fire test; a video image acquisition module is used to collect video images of the fixed shelf fire test device during the fire test; a temperature field acquisition module is used to collect the temperature at the ignition point of the fire scene and the space temperature during the fire test; an aspirated smoke fire test module is used to collect smoke concentration in the first time period at the beginning of the fire test; a pipeline shelf fire detection module is used to collect smoke concentration in the second time period at the beginning of the fire test; and a point-type smoke fire detection module is used to collect smoke concentration in the third time period at the beginning of the fire test. This system can more accurately simulate the entire process of shelf fire, shorten the test cycle, reduce the test cost and risk factor, and can accurately collect various data in the fire process in real time, providing reliable data guarantee for shelf fire research.

[0083] Embodiment 2:

[0084] This embodiment proposes a method for collecting test data of a shelf fire test, which is implemented by using the shelf fire test system described in Embodiment 1, and includes:

[0085] Obtaining optical smoke density values ​​during fire testing;

[0086] Acquire video images of the fixed shelf fire test device during the fire test;

[0087] Fire temperature and shelf temperature during fire testing;

[0088] Collect smoke concentration during the first period of time at the beginning of the fire test;

[0089] Smoke concentration is collected during the second time period at the beginning of the fire test;

[0090] The smoke density is collected in a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0091] The shelf fire test data collection method further includes:

[0092] Processing and converting the optical smoke density value, the video image, the temperature at the fire point, the space temperature, the smoke density in the first time period, the smoke density in the second time period, and the smoke density in the third time period;

[0093] The results of processing and conversion are sent to the analysis and testing terminal.

[0094] In this embodiment, a method for collecting test data of a shelf fire test is provided, and the collected information is shown in Table 2:

[0095] Table 2: Data collection table

[0096]

[0097] The collected optical smoke density information, smoke concentration information, temperature information and other signals are converted into digital signals and transmitted to the data acquisition and analysis test terminal via wired transmission. The terminal completes tasks such as relevant data information storage, recording, interface graphic display, etc.

[0098] (1) Data collection stage

[0099] Optical smoke density information collection:

[0100] The optical smoke density value test is completed using an optical smoke density tester (model Lorenz AMI). The device measures smoke density by using the principle that after a light beam is acted upon by smoke particles, the light radiation energy decays exponentially. The contrast light method is used to measure the jet passing through the absorption distance and being projected backwards by the reflector to the measuring light sensor, thus passing through the absorption distance again. In addition to the measuring light, a contrast light is also detected to compensate for changes in the intensity of the measuring light source.

[0101] Smoke density information collection:

[0102] Suction smoke fire test module: It consists of suction pump, sampling pipe network, smoke detector, data analysis unit and alarm device. It is arranged in two pipes, with holes opened at 4m and 8m of each vertical pipe. The suction pump extracts air samples from the monitored area through the sampling pipe network and transports them to the smoke detector. Once the system determines that the smoke concentration exceeds the preset safety threshold, the alarm device will immediately sound an audible and visual alarm to warn relevant personnel. At the same time, the system also has the linkage function with the fire control system, which can automatically start the fire extinguishing equipment or take other emergency measures in an emergency.

[0103] Point type smoke fire detection module:

[0104] It consists of smoke detection sensors, data processing units, and signal transmission circuits. Seven are installed at 4m from the shelf and seven at 8m. The smoke detection sensors are mainly used to detect the smoke concentration in the environment. The data processing unit is used to complete the data collection and analysis of the smoke concentration information. The signal transmission circuit transmits the relevant data information to the control center to complete the detection task of the smoke concentration information.

[0105] Temperature information collection: The temperature field collection module is composed of a control unit, a high-temperature thermocouple, and a wind-temperature thermocouple. After the test fire is ignited, the control unit is turned on to communicate with the thermocouple group to complete the real-time data collection of the test site temperature, and the control unit completes the storage of related collected data. The thermocouple group tests the temperature information at different locations respectively, and uses the data collection unit in the control unit to complete the temperature information data collection. The data information is transmitted to the data processing module through its internal interface circuit to complete the temperature information collection task.

[0106] Video image information acquisition: The video image acquisition module consists of key parts such as a Sony high-definition camera, image sensor, data processing unit, and transmission interface. It is arranged on the east and west walls of the laboratory, 4m and 8m above the ground, respectively, and can collect various situations in the laboratory from all directions and angles.

[0107] (2) Data processing stage

[0108] In this stage, the data acquired in the data collection stage needs to be converted and sorted. According to the protocol format of each acquisition sensor, after a series of data processing processes such as mathematical operations and code conversion, the collected data is converted into a form that can accurately express the actual measured values ​​of various parameters related to shelf fires (such as optical smoke density, smoke concentration, temperature, fire size, etc.) for subsequent analysis and application.

[0109] (3) Data transmission stage

[0110] This stage mainly transmits the data collected and processed in the first two stages to the visual data analysis test terminal (such as the ground control host) through a specific transmission channel. The specific transmission method and path can be designed according to the actual equipment and system configuration to ensure that the data can be transmitted stably and quickly so that relevant personnel can obtain and analyze the relevant data of the shelf fire experiment in a timely manner.

[0111] The various embodiments in the present application are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0112] The protection scope of the present application is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the scope and spirit of the present disclosure. If these changes and modifications fall within the scope of the claims of the present disclosure and their equivalents, the intention of the present disclosure also includes these changes and modifications.

Claims

1. A shelf fire test system, characterized in that: include: A fixed shelf fire test device is used to construct a fixed shelf to be fire tested; Optical smoke density tester, used to obtain the optical smoke density value of smoke during fire test; A video image acquisition module, used for acquiring video images of a fixed shelf fire test during the fire test; The temperature field acquisition module is used to collect the temperature at the ignition point and the space temperature during the fire test; Aspiration smoke fire test module, used to collect smoke concentration in the first time period at the beginning of the fire test; A pipeline rack fire detection module is used to collect smoke concentration in a second time period at the beginning of the fire test; The point-type smoke fire detection module is used to collect smoke concentration within a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

2. The shelf fire test system according to claim 1, characterized in that: The fixed shelf fire test device comprises one group of shelves or multiple groups of shelves, each group of shelves is provided with a layer of beams and mesh layer plates at a first preset distance, and each layer of mesh layer plates is an upper layer plate.

3. The shelf fire test system according to claim 1, characterized in that: The optical smoke density tester comprises at least two, one optical smoke density tester is installed at 1 / 2 height of the fixed shelf fire test device, and the other optical smoke density tester is installed at the top of the fixed shelf fire test device.

4. The shelf fire test system according to claim 1, characterized in that: The video image acquisition modules include at least two, one video image acquisition module is used to acquire the front video image of the fixed shelf fire test device during the fire test, and the other video image acquisition module is used to acquire the back video image of the fixed shelf fire test device during the fire test.

5. The shelf fire test system according to claim 1, characterized in that: The temperature field acquisition module includes a high-temperature thermocouple and a wind temperature thermocouple. The high-temperature thermocouple is installed in the fire scene of the fire test and is used to collect the temperature at the ignition point in the center of the fire scene. The wind temperature thermocouple is installed at different mesh layers of the fixed shelf fire test device and is used to collect the spatial temperature at different positions during the fire test.

6. The shelf fire test system according to claim 1, characterized in that: The aspiration smoke fire test module includes multiple smoke collection units, which collect smoke concentration in a first time period at the beginning of the fire test in sampling holes in a pre-arranged pipe network through the smoke collection units. The pre-arranged pipe network is a double-pipeline or four-pipeline pipe network pre-arranged on a fixed shelf fire test device, and a sampling hole is opened at a second preset distance in each vertical pipe.

7. The shelf fire test system according to claim 1, characterized in that: The pipeline rack fire detection module includes a plurality of first detectors, which collect smoke concentration in a second time period at the beginning of a fire test in sampling holes in a pre-arranged pipe network through the first detectors. One first detector is used in each pipe, and the sampling pipe networks between the first detectors are isolated from each other.

8. The shelf fire test system according to claim 1, characterized in that: The point-type smoke fire detection module includes two groups of second detectors. The first group of second detectors is distributed and installed at 1 / 2 height of the fixed shelf fire test device, and the second group of second detectors is distributed and installed at the top of the fixed shelf fire test device.

9. A method for collecting data of a shelf fire test, implemented by using the shelf fire test system according to any one of claims 1 to 8, characterized in that: include: Obtain the optical smoke density value of smoke during the fire test; Collect video images of the fixed rack fire test process during the fire test; The temperature at the fire point and the space temperature during the fire test; Collect smoke concentration during the first period of time at the beginning of the fire test; Smoke concentration is collected during the second time period at the beginning of the fire test; The smoke density is collected in a third time period at the beginning of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

10. The shelf fire test system according to claim 9, characterized in that: The shelf fire test data collection method further includes: Processing and converting the optical smoke density value of smoke, video images, fire scene temperature, space temperature, smoke concentration in the first time period, smoke concentration in the second time period, and smoke concentration in the third time period; The results of processing and conversion are sent to the analysis and testing terminal.

Images