CN116246411A - Test method and system for fire test - Google Patents
Test method and system for fire test Download PDFInfo
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- CN116246411A CN116246411A CN202310215000.2A CN202310215000A CN116246411A CN 116246411 A CN116246411 A CN 116246411A CN 202310215000 A CN202310215000 A CN 202310215000A CN 116246411 A CN116246411 A CN 116246411A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/14—Toxic gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a fire test method, which comprises the following steps: s1, adjusting a distributed video monitoring module, and aligning the distributed video monitoring module to a test area; s2, installing a detector to be tested, and checking whether the detector is in a normal working state; s3, checking whether the environmental parameters in the test area meet the requirements; s4, generating a record file corresponding to the detector, and simultaneously recording the environment parameters and the working state of the detector at the corresponding time; s5, starting the ignition device and starting to record corresponding parameters; s6, the detector generates alarm triggering and records various parameters during alarm; and S7, ending the test, and generating various parameter reports and curve files. The invention provides a fire test method, which utilizes a simulated fire scene to test a fire alarm so as to obtain data which is more fit with a real scene. The invention also provides a fire test system.
Description
Technical Field
The invention relates to the technical field of fire test, in particular to a test method and a system for fire test.
Background
Fire alarm product standards at home and abroad basically design fire sensitivity tests when verifying the response performance of smoke-sensing type fire alarm detectors, simulate real fire scenes by burning a series of different combustible substances, and test the response capability of the smoke-sensing type fire alarm.
In the fire sensitivity test, the standard specifies that 4 detectors of the same model must be tested simultaneously, and the most unfavorable orientation faces the fire source when installed, and the most unfavorable orientations of fire detectors of different models are different because of structural differences. At present, a camera is used for monitoring a fire alarm indicator lamp, a tester observes manual control custom data acquisition software through human eyes, and test data are recorded. The problems are: 1. when a plurality of detectors of 1 model are alarmed almost simultaneously, the experimenter is difficult to distinguish which alarm is given first; when multiple models are tested simultaneously, the model detector is not known to report before test data is recorded. Although the test is a qualitative test, the alarm is given in a specified time, but the accuracy of the data is required to be further improved; 2. different smoke-sensing fire detector standards, fire sensitivity tests include at least more than 4 types of fires, white smoke and black smoke, and black smoke affects whether a tester observes the alarm lamp to be lighted through the camera. 3. The most unfavorable orientation of different model detectors is different, leads to the alarm lamp not necessarily all in observing the camera field of vision after the detector is installed.
In practice, people find that the false alarm rate of the fire alarm detector of the single detection principle is high, and the fire judgment is not accurate enough. With the development of technology, in order to improve the reliability of the detector, a composite fire alarm detector based on various detection principles gradually becomes the main stream of industry development, and the most common products are warm smoke composition or warm smoke gas composition. At present, national and international standard current practice is to test different detection principles, such as smoke sensing standard for smoke sensing fire alarm, temperature sensing standard for temperature sensing fire alarm and combustible gas detector standard for combustible gas fire alarm. This presents two problems, one is that current standards require the recording of smoke density and floor-to-ceiling temperature variations in the laboratory, and that the above data is insufficient to determine what part of the sensor is actually functioning when tested for fire sensitivity, e.g., according to smoke sensing standards, the composite detector may be triggered to alarm due to the hot or flammable gases generated during combustion, which is important to the manufacturer's retrofit design. If other sensors are removed or the corresponding detection circuits are disabled during the test, the sample is destroyed and not complete enough; under the two severe environmental conditions, software conflict may exist when the multiple sensors work simultaneously, so that the detector is paralyzed, the software test cannot replace the real fire environmental test, and the product is necessary to be tested in a normal state.
Disclosure of Invention
The invention aims to provide a fire test method and a fire test system, which can better perform fire tests, so that a simulated fire scene is utilized to perform the test of a fire alarm, and data which are more attached to a real scene are obtained.
The invention discloses a fire test method and a fire test system, wherein the fire test method and the fire test system adopt the following technical scheme:
a fire test method comprises the following steps:
s1, adjusting a distributed video monitoring module, aligning the distributed video monitoring module to a test area, and adjusting shooting visual field, focal length and definition;
s2, installing a detector to be tested, and checking whether the detector is in a normal working state;
s3, checking whether the environmental parameters in the test area meet the requirements or not, and the temperature, humidity and air flow speed in the environment;
s4, generating a record file corresponding to the detector, and simultaneously recording the environment parameters and the working state of the detector at the corresponding time;
s5, starting the ignition device, normally starting the ignition device in a test area, and starting to record corresponding parameters;
s6, the detector generates alarm triggering and records various parameters during alarm;
and S7, ending the test, and generating various parameter reports and curve files.
Preferably, in step S5, when the ignition is unsuccessful, the ignition is re-performed if the environmental parameters are adjusted to meet the requirements.
Preferably, in step S6, if the detector does not trigger an alarm within a specified time or within a specified environmental parameter range, an alarm value of 0 is recorded.
The fire test system comprises a monitoring part, a control part and a central control platform, wherein the central control platform comprises an electric control integrated module and a data acquisition integrated module, the electric control integrated module is electrically connected with the control part, the data acquisition integrated module is electrically connected with the monitoring part, the monitoring part is used for monitoring the detection of various parameters of the test method, and the control part is used for controlling the device control of the test method.
Preferably, the monitoring part includes:
the temperature and humidity monitoring module is used for monitoring the temperature and humidity of the test area;
the fuel weight monitoring module is used for monitoring the fuel weight and the change of the fuel weight of the ignition device;
the gas concentration monitoring module is used for monitoring the change of the density of the gas generated by the combustion of carbon monoxide, carbon dioxide, nitrogen dioxide and the like;
smoke density detecting module for monitoring and recording smoke density change in ceiling range specified by standard
And the distributed video monitoring module is used for monitoring and providing a detector alarm lamp picture.
Preferably, the control section includes:
the lamplight control module is used for controlling indoor illumination in the test area;
the control module of the lifting device controls the up-and-down movement of a ceiling provided with a detector and an instrument;
the humidifying control module controls the humidifier switch to perform humidity adjustment;
the temperature control module is used for controlling the air conditioner to adjust the temperature;
and the smoke discharging control module is responsible for opening the exhaust fan after each field of test fire is finished, and sucking away smoke generated by combustion, so that fresh air is convenient to enter from the air inlet.
The test method for fire test disclosed by the invention has the beneficial effects that: through the environmental parameter before the automatic acquisition test and each item parameter after the ignition, rethread video recognition technology judges whether the ignition is successful to correspond to realize experimental data automatic recording, improve experimental efficiency, reduced human error, still increased gaseous change parameter data, fuel change process data when burning simultaneously, the convenience design side rectifies and consults and the experimental side carries out fire model research, thereby utilizes the conflagration scene of simulation to carry out the test of conflagration alarm, in order to obtain the data of laminating reality scene more.
Drawings
FIG. 1 is a flow chart of a test method of a fire test of the present invention.
Fig. 2 is a schematic diagram of a fire test system according to the present invention.
Detailed Description
The invention is further illustrated and described below in conjunction with the specific embodiments and the accompanying drawings:
referring to fig. 1, a fire test method includes the following steps:
s1, adjusting the distributed video monitoring module, aligning the distributed video monitoring module to a test area, and adjusting shooting visual field, focal length and definition.
S2, installing the detector to be tested, and checking whether the detector is in a normal working state.
S3, checking whether the environmental parameters in the test area meet the requirements, and the temperature, humidity and air flow speed in the environment.
S4, generating a record file corresponding to the detector, and simultaneously recording the environment parameters and the working state of the detector at the corresponding time.
S5, starting the ignition device, normally starting the ignition device in a test area, and starting to record corresponding parameters;
when the ignition is unsuccessful in step S5, the ignition is re-performed if the environmental parameters are adjusted to meet the requirements.
S6, the detector generates alarm triggering and records various parameters during alarm;
in step S6, if the detector does not trigger an alarm within a specified time or within a specified environmental parameter range, the alarm value is recorded as 0;
the parameters include in particular the temperature, humidity, gas concentration, smoke density, time node, remaining fuel weight, etc. of the test area.
And S7, ending the test, and generating various parameter reports and curve files.
Through the environmental parameter before the automatic acquisition test and each item parameter after the ignition, rethread video recognition technology judges whether the ignition is successful to correspond to realize experimental data automatic recording, improve experimental efficiency, reduced human error, still increased gaseous change parameter data, fuel change process data when burning simultaneously, the convenience design side rectifies and consults and the experimental side carries out fire model research, thereby utilizes the conflagration scene of simulation to carry out the test of conflagration alarm, in order to obtain the data of laminating reality scene more.
Referring to fig. 2, a fire test system includes a monitoring portion, a control portion and a central control platform, wherein the central control platform includes an electric control integrated module and a data acquisition integrated module, the electric control integrated module is electrically connected with the control portion, the data acquisition integrated module is electrically connected with the monitoring portion, the monitoring portion is used for monitoring various parameter detections of the above test method, and the control portion is used for controlling device control of the above test method.
The monitoring part consists of 5 submodules of temperature and humidity, fuel weight, gas concentration, smoke density and video monitoring. The modules are mutually independent. The temperature and humidity monitoring module is used for monitoring the temperature and humidity of the test area; the fuel weight monitoring module is used for confirming the weight and the change of the fuel; a gas concentration monitoring module responsible for monitoring changes in the density of the combustion-generated gas including, but not limited to, carbon monoxide, carbon dioxide, nitrogen dioxide, etc.; the smoke density monitoring module is responsible for recording the smoke density change in the range of a standard specified ceiling; and the distributed video monitoring module is responsible for providing a detector alarm lamp picture. The modules are used for providing combustion process data, and a data basis is provided for facilitating subsequent further research and analysis of fire development rules.
The control part consists of 6 submodules for controlling light, ignition, lifting, humidifier, temperature and smoke exhaust, and the modules are mutually independent. The lamplight module is mainly used for controlling indoor illumination of a test area, and is opened during installation and debugging before a test, so that the lamplight module is convenient for a tester to operate; the lifting device module controls the up-and-down movement of a ceiling provided with the detector and the instrument, so that a tester can conveniently install and debug equipment and maintain the instrument without climbing, and the installation and debugging efficiency is improved; the humidifier module controls the humidifier switch, and moisture in the air evaporates rapidly after burning, and the air humidity in different seasons also fluctuates. The temperature control module controls the air conditioner, and the temperature of the test area after combustion is higher than the standard requirement because multiple fires need to be continuously combusted, and the two modules are used for adjusting the temperature and the humidity of the test area between different fire tests; the ignition module is used for igniting different combustibles, so that the risk of exposing a tester to dangerous environments is reduced. The smoke exhaust control module is responsible for opening the exhaust fan after each field of test fire is finished, and the smoke generated by combustion is pumped away, so that fresh air can conveniently enter a test area from the air inlet.
The system comprises at least 2 cameras, a distributed video monitoring module and a central control platform data acquisition integration module, wherein the cameras are placed on the ground of a test area and are movable in position, and the connection mode is wired or wireless. The data integration module has an image processing function. After the detector alarm lamp enters the field of view, the ROI (regionof interest ) can be set for the video, and the corresponding product model is numbered and remarked. When the detector is triggered to be lightened by the alarm lamps, the ROI judges the image result change through an algorithm, and the ROI is used as a trigger signal, so that a central control platform records the values of the temperature, time, smoke density, gas density, fuel weight and the like at the moment, the process data of the whole test data also stops recording and automatically generates a report form and various parameter change curves, and the alarm point values are marked into the curves, thereby being convenient for a tester to judge whether the detector is qualified or not. If the detector is unqualified, the detector is helpful for a designer to find the rectifying and modifying direction according to the recorded relevant information such as smoke density, temperature, gas and the like.
The invention provides a fire test method, which is characterized in that whether ignition is successful or not is judged through automatic acquisition of environmental parameters before the test and parameters after ignition and a video recognition technology, and test data is automatically recorded correspondingly, so that the test efficiency is improved, human errors are reduced, meanwhile, gas change parameter data and fuel change process data during combustion are increased, the correction and reference of a designer and the fire model research of a tester are facilitated, and the simulated fire scene is utilized to test a fire alarm, so that data which is more fit with a real scene is obtained.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (6)
1. The fire test method is characterized by comprising the following steps of:
s1, adjusting a distributed video monitoring module, aligning the distributed video monitoring module to a test area, and adjusting shooting visual field, focal length and definition;
s2, installing a detector to be tested, and checking whether the detector is in a normal working state;
s3, checking whether the environmental parameters in the test area meet the requirements or not, and the temperature, humidity and air flow speed in the environment;
s4, generating a record file corresponding to the detector, and simultaneously recording the environment parameters and the working state of the detector at the corresponding time;
s5, starting the ignition device, normally starting the ignition device in a test area, and starting to record corresponding parameters;
s6, the detector generates alarm triggering and records various parameters during alarm;
and S7, ending the test, and generating various parameter reports and curve files.
2. The fire test method according to claim 1, wherein when the ignition is unsuccessful in step S5, the ignition is resumed when the environmental parameters are adjusted to be satisfactory.
3. A fire test method according to claim 1, characterized in that in step S6, if the detector does not trigger an alarm within a specified time or within a specified environmental parameter, an alarm value of 0 is recorded.
4. A fire test system, comprising a monitoring part, a control part and a central control platform, wherein the central control platform comprises an electric control integrated module and a data acquisition integrated module, the electric control integrated module is electrically connected with the control part, the data acquisition integrated module is electrically connected with the monitoring part, the monitoring part is used for monitoring the parameter detection of the test method according to any one of claims 1-3, and the control part is used for controlling the device control of the test method according to any one of claims 1-3.
5. A fire testing system according to claim 4, wherein said monitoring portion comprises:
the temperature and humidity monitoring module is used for monitoring the temperature and humidity of the test area;
the fuel weight monitoring module is used for monitoring the fuel weight and the change of the fuel weight of the ignition device;
the gas concentration monitoring module is used for monitoring the change of the density of the gas generated by the combustion of carbon monoxide, carbon dioxide, nitrogen dioxide and the like;
smoke density detecting module for monitoring and recording smoke density change in ceiling range specified by standard
And the distributed video monitoring module is used for monitoring and providing a detector alarm lamp picture.
6. A fire testing system according to claim 4, wherein said control portion comprises:
the lamplight control module is used for controlling indoor illumination in the test area;
the control module of the lifting device controls the up-and-down movement of a ceiling provided with a detector and an instrument;
the humidifying control module controls the humidifier switch to perform humidity adjustment;
the temperature control module is used for controlling the air conditioner to adjust the temperature;
and the smoke discharging control module is responsible for opening the exhaust fan after each field of test fire is finished, and sucking away smoke generated by combustion, so that fresh air is convenient to enter from the air inlet.
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| CN202310215000.2A CN116246411A (en) | 2023-03-08 | 2023-03-08 | Test method and system for fire test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118097913A (en) * | 2024-04-23 | 2024-05-28 | 中天引控科技股份有限公司 | Sensitivity detection method and device of early warning detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118097913A (en) * | 2024-04-23 | 2024-05-28 | 中天引控科技股份有限公司 | Sensitivity detection method and device of early warning detection device |
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