CN213779877U - Infrared smoke screen shielding performance testing device - Google Patents
Infrared smoke screen shielding performance testing device Download PDFInfo
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- CN213779877U CN213779877U CN202022288122.9U CN202022288122U CN213779877U CN 213779877 U CN213779877 U CN 213779877U CN 202022288122 U CN202022288122 U CN 202022288122U CN 213779877 U CN213779877 U CN 213779877U
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Abstract
The utility model provides an infrared smoke screen shields capability test device, include: the device comprises a light source target assembly, an infrared measuring assembly, an upper computer and a smoke screen to be measured; the light source target assembly is used for modulating and emitting a light source; the infrared measurement assembly faces the light source target assembly and is arranged at a certain distance, the smoke screen to be measured is located at the light source target assembly and is shielded between the infrared measurement assembly and the light source target assembly, and the infrared measurement assembly collects and processes real-time images of the light source target assembly and uploads the images to the upper computer. The utility model discloses can realize the test of smoke screen transmissivity in the open air, not receive the restriction of test environment and test condition, satisfy all-weather test demand.
Description
Technical Field
The utility model relates to an infrared smoke screen detects technical field, in particular to infrared smoke screen shields capability test device.
Background
The traditional smoke screen shielding performance detection system adopts the measurement of transmittance to evaluate the smoke screen shielding performance, and the smoke screen transmittance measurement methods are various, and most commonly include a single-point measurement method, a multipoint measurement method, a point-by-point measurement method and the like. The measuring device required by the single-point measuring method is simple, the measuring precision of the measuring device is high, but the measuring device cannot measure the shielding area of the infrared smoke screen; and the measurement error of the point-by-point measurement method is large, so that the multipoint measurement method based on the gaze type imaging apparatus is often used.
The existing staring type imaging-based testing equipment is mostly complex in structure and often limited by the use environment, for example, a patent with the application number of CN201710695100.4 provides an infrared transmittance measuring device and method for an infrared interference smoke screen in vacuum. However, the testing device has a complex structure and is inconvenient to carry, and the testing cannot be finished outdoors.
SUMMERY OF THE UTILITY MODEL
In view of this, the main object of the present invention is to provide an infrared smoke screen shielding performance testing device, which can realize the test of the smoke screen transmittance outdoors, and is not limited by the testing environment and the testing conditions, so as to satisfy the all-weather testing requirement.
The utility model discloses a technical scheme do, an infrared smoke screen shields capability test device, include: the device comprises a light source target assembly, an infrared measuring assembly, an upper computer and a smoke screen to be measured;
the light source target assembly is used for modulating and emitting a light source;
the infrared measurement assembly faces the light source target assembly and is arranged at a certain distance, the smoke screen to be measured is located at the light source target assembly and is shielded between the infrared measurement assembly and the light source target assembly, and the infrared measurement assembly collects and processes real-time images of the light source target assembly and uploads the images to the upper computer.
By the above, the utility model arranges the light source target assembly and the infrared measuring assembly at a distance, and firstly, before the smoke screen to be tested is released, the infrared measuring assembly collects the image of the light source target to form the original gray value point slight value image of the whole image; and then releasing the smoke screen to be tested, carrying out image real-time acquisition on the whole smoke screen releasing process through the infrared measuring assembly, forming a corresponding gray value point slight value image, and comparing and correspondingly calculating the images acquired before and after the smoke screen is released, so that index parameters reflecting the shielding performance of the infrared smoke screen can be obtained. The utility model provides a measuring device does not receive the restriction of test environment and test condition, and the structure is simple relatively, satisfies all-weather test demand.
The infrared measurement assembly comprises an imaging module, an acquisition module, a processing module and a power module, wherein the imaging module, the acquisition module and the processing module are electrically connected in sequence, and the power module supplies power to the modules.
From above, with the imaging module towards light source target subassembly to carry out the real-time collection of image through collection module, then send to processing module and carry out data processing.
The imaging module comprises at least one of a CCD measuring head, a medium-wave refrigeration measuring head and a long-wave non-refrigeration measuring head.
Therefore, the collection of the images of the light sources of all wave bands of the light source target assembly can be realized by selecting different measuring heads corresponding to different wave bands.
The infrared measurement assembly further comprises a tripod made of carbon fiber materials and used for mounting the imaging module.
By last, the tripod adopts carbon fiber light material, and light in weight under the same load condition is convenient for carry in the field and operate.
The light source target assembly comprises a medium-long wave heat source indicator and a visible light indicator, and is fixedly arranged on a frame by adopting a locking structure.
Therefore, the light source can be used for light source modulation and transmitting medium/long wave infrared light sources and visible light so as to meet the light sources required by different test requirements.
The infrared measurement device also comprises a display unit electrically connected with the infrared measurement component and the upper computer.
Therefore, the acquired images and the data processing result can be displayed in real time, and meanwhile, the test interface can be displayed, so that each input parameter can be adjusted conveniently.
Drawings
FIG. 1 is a schematic diagram of the module of the device for testing the shielding performance of the infrared smoke screen;
fig. 2 is a schematic diagram of the module of the infrared measurement module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of an infrared smoke screen shielding performance testing apparatus provided in an embodiment of the present invention, which includes a light source target assembly 100, an infrared measurement assembly 200, an upper computer 300, a display unit 500, and a smoke screen 400 to be measured;
the light source target assembly 100 comprises a medium-long wave heat source indicator and a visible light indicator, and is used for modulating a light source and emitting a medium/long wave infrared light source and visible light so as to meet light sources required by different test requirements; the infrared measurement device also comprises a mounting frame, a heat source module and a temperature measurement module, wherein the mounting frame is used for fixedly mounting the medium-long wave heat source indicator and the visible light indicator so that the medium-long wave heat source indicator and the visible light indicator are relatively fixed with the infrared measurement component 200 in the measurement process;
the infrared measurement assembly 200 faces the light source target assembly 100 and is arranged at a certain distance, the smoke screen 400 to be measured is located at the light source target assembly 100 and is shielded between the infrared measurement assembly 200 and the light source target assembly 100, and the infrared measurement assembly 100 performs real-time image acquisition and processing on the light source target assembly 200 and uploads the image to the upper computer 300 and the display unit 500.
As shown in fig. 2, the infrared measurement assembly 200 includes an imaging module 210, an acquisition module 220, and a processing module 230, which are electrically connected in sequence, and further includes a power module 240 for supplying power to each module. The imaging module 210 selects a corresponding measuring head to measure according to a light source band emitted by the light source target assembly 100, specifically, the imaging module 210 may select one or more of a CCD measuring head, a medium-wave refrigeration measuring head and a long-wave non-refrigeration measuring head, so as to realize measurement of light sources in different bands, and the acquisition module 220 is configured to acquire a measured image in real time and send the acquired image to the processing module 230 for processing;
in practical application, the measuring head is fixedly installed by a tripod to face the target indicator in the light source target assembly, and the tripod is made of carbon fiber light materials, is light in weight under the same load condition and is convenient to carry and operate in the field.
Software for testing the infrared smoke screen shielding performance is pre-installed in the upper computer 300, and necessary parameters can be input, imaging channels can be selected, and operation commands from the beginning to the end of data acquisition can be realized by operating the software;
it should be noted that the display unit 500 may be a separate display for displaying the image acquired by the infrared measurement component 200, or may share a display with the upper computer 300 to display the acquired image, the result of data processing, and the software interface for testing.
Based on foretell infrared smoke screen shields capability test device, the embodiment of the utility model provides an in when carrying out outdoor smoke screen transmissivity and measuring, its use step is:
a) taking out a measuring head and a tripod in the infrared measuring assembly, and placing the measuring head and the tripod at a position near an upper computer for facilitating cable connection;
b) the measuring head is fixedly arranged on a tripod through threads at the bottom and is electrically connected correspondingly;
c) the light source target assembly is taken out and placed at a fixed testing distance (for example, 50m), and the power is supplied by using 5V power adapters and 12V power adapters respectively;
d) the position of the measuring head is adjusted to enable the light source of the light source target to be located at the image center position of the display unit;
d) and adjusting parameters in software of the upper computer and starting measurement.
Based on above-mentioned device and application step, the utility model discloses a theory of operation does:
firstly, carrying out image acquisition on an opened light source target under the condition of not releasing a smoke screen through measuring heads of corresponding wave bands in an infrared measuring assembly to form an original gray value point slight value image of the whole image;
then, releasing the smoke screen, and carrying out image acquisition of 50 Hz frame frequency on the whole smoke screen releasing process through the measuring heads of corresponding wave bands in the infrared measuring assembly to form a corresponding gray value point slight value image;
in the whole smoke screen release image acquisition process, the real-time processing is realized through the processing module: after the acquisition of each frame of infrared image containing smoke is finished, immediately transmitting the image data to a processing module, then comparing the gray value point slight value graph with the original gray value point slight value graph, and calculating by a formula to obtain the required proportion value of each pixel;
and immediately comparing the calculated ratio value with each key threshold value in the performance index to finish the judgment and calculation of partial parameters of the related infrared smoke shielding performance. Finish when smoke screen image acquisition, all relevant parameter value calculation are accomplished, draw basic parameter value and calculate according to performance parameter computational formula and reachd final index parameter value, this final index parameter value includes average transmittance, shelters from the area, shelters from the rate, shelters from time etc. and can directly perceivedly reflect through the final index parameter value that reachs the utility model discloses an infrared smoke screen shields performance testing device's measuring effect.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides an infrared smoke screen shielding performance testing device which characterized in that includes: the device comprises a light source target assembly, an infrared measuring assembly, an upper computer and a smoke screen to be measured;
the light source target assembly is used for modulating and emitting a light source;
the infrared measurement assembly faces the light source target assembly and is arranged at a certain distance, the smoke screen to be measured is located at the light source target assembly and is shielded between the infrared measurement assembly and the light source target assembly, and the infrared measurement assembly collects and processes real-time images of the light source target assembly and uploads the images to the upper computer.
2. The infrared smoke screen shielding performance testing device of claim 1, wherein the infrared measurement component comprises an imaging module, an acquisition module and a processing module which are electrically connected in sequence, and a power supply module for supplying power to the modules.
3. The infrared smoke screen shielding performance testing apparatus of claim 2, wherein the imaging module comprises at least one of a CCD measuring head, a medium wave refrigeration type measuring head and a long wave non-refrigeration type measuring head.
4. The infrared smoke screen shielding performance testing apparatus of claim 2, wherein said infrared measuring assembly further comprises a tripod made of carbon fiber material for mounting said imaging module.
5. The infrared smoke screen shielding performance testing device of claim 1, wherein the light source target assembly comprises a medium-long wave heat source indicator and a visible light indicator, and is fixedly mounted on a frame by a locking structure.
6. The infrared smoke screen shielding performance testing device of claim 1, further comprising a display unit electrically connected with the infrared measurement assembly and an upper computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022288122.9U CN213779877U (en) | 2020-10-14 | 2020-10-14 | Infrared smoke screen shielding performance testing device |
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| CN202022288122.9U CN213779877U (en) | 2020-10-14 | 2020-10-14 | Infrared smoke screen shielding performance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115219460A (en) * | 2022-07-08 | 2022-10-21 | 西安应用光学研究所 | Method for testing infrared effective shielding area of smoke screen unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115219460A (en) * | 2022-07-08 | 2022-10-21 | 西安应用光学研究所 | Method for testing infrared effective shielding area of smoke screen unit |
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