CN117061859B - Icing wind tunnel test camera monitoring system and method - Google Patents
Icing wind tunnel test camera monitoring system and method Download PDFInfo
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- CN117061859B CN117061859B CN202311318420.XA CN202311318420A CN117061859B CN 117061859 B CN117061859 B CN 117061859B CN 202311318420 A CN202311318420 A CN 202311318420A CN 117061859 B CN117061859 B CN 117061859B
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- 238000012360 testing method Methods 0.000 title claims abstract description 241
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000005286 illumination Methods 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000005485 electric heating Methods 0.000 claims description 42
- 230000008569 process Effects 0.000 claims description 28
- 239000011521 glass Substances 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000003384 imaging method Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
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- 231100000817 safety factor Toxicity 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to an icing wind tunnel test camera monitoring system and method. Transparent observation windows are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and a plurality of observation windows are arranged on each side; the viewing windows include a first viewing window, a second viewing window, and a third viewing window. Wherein, the first observation window on at least one side is provided with an illumination device outside as an illumination window; a shooting device is arranged outside the second observation window on at least one side and is used as a shooting window; a display device is arranged outside at least a third observation window on the opposite side of the shooting window and is used as a display window; the lighting device is used for lighting the icing wind tunnel test section through the first observation window, the shooting device is used for shooting the model state change of the test section through the second observation window and displaying the screen of the device, and the display device is used for displaying the test parameters tested in the current icing wind tunnel test section through the third observation window. Compared with the prior art, the method has the characteristics of simple test data query, high query efficiency, simple realization and low cost.
Description
Technical Field
The invention relates to the technical field of icing wind tunnel tests in aviation tests, in particular to an icing wind tunnel test camera monitoring system.
Background
In the icing wind tunnel test, a test model is arranged in a test section, and the test section is arranged in a residence chamber simulating a high air pressure environment of 2 ten thousand meters at maximum and having a temperature of minus 40 ℃. The multiple cameras arranged on the outer wall surface of the glass observation window of the test section shoot the state of the test model from multiple angles, and are important equipment for monitoring the icing and preventing and removing states of the test model. The camera is usually selected from domestic standardized products meeting environmental requirements, is connected to a measurement and control room switch at normal temperature and normal pressure through network communication, is connected to a hard disk video recorder and a computer through a network, is convenient for monitoring and storing the state of the test model in real time, and can record the test model at any time period according to the requirement. After each test is finished, the test monitoring video, the shooting of the hole, the scanning of ice shape, the test report and the like are submitted to the entrusting test party, and the test video is an important component of test data. When the consignor inquires test data, the consignor pays attention to test parameters corresponding to the icing growth or shedding process of the model in the test, wherein the main test parameters include test wind speed, temperature, ambient air pressure, spraying time, liquid water content, particle size and the like. The traditional method is to correspondingly search the test parameters at the time according to the information of the video clock. The above query mode has low efficiency and poor user experience because of more video content.
In order to solve the problem of synchronously recording test parameters of the video, a camera background program can be developed jointly with a camera manufacturer, and test parameter information is integrated into camera monitoring system software through a network. The method needs to be customized and developed after a camera development unit provides source codes, and has large investment. Meanwhile, the above method is difficult to realize based on requirements and safety factors.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The technical problem to be solved by the application is to provide the icing wind tunnel test camera monitoring system and the icing wind tunnel test camera monitoring method, and the icing wind tunnel test camera monitoring system and the icing wind tunnel test camera monitoring method have the characteristics of simple test data inquiry, high inquiry efficiency, simplicity in implementation and low cost.
In a first aspect, an embodiment provides an icing wind tunnel test imaging monitoring system, wherein transparent observation windows are arranged on two opposite sides of a wall surface of an icing wind tunnel test section, and a plurality of observation windows are arranged on each side;
the observation window comprises a first observation window, a second observation window and a third observation window; wherein, the first observation window on at least one side is provided with an illumination device outside as an illumination window; a shooting device is arranged outside the second observation window on at least one side and is used as a shooting window; a display device is arranged outside at least a third observation window on the opposite side of the shooting window and is used as a display window; the lighting device is used for lighting the icing wind tunnel test section through the first observation window, the shooting device is used for shooting the model state change of the test section and the screen of the display device through the second observation window, and the display device is used for displaying the test parameters tested in the current icing wind tunnel test section through the third observation window; the font display height of the test parameters is above 6 cm.
In one embodiment, any one observation window is a multi-layer glass observation window, and a transparent electric heating film is arranged between two adjacent layers of glass and used for electrically heating the observation window to prevent fog or frosting of the observation window.
In one embodiment, the device further comprises an electric heating control device, wherein the electric heating control device comprises a temperature sensor, a temperature controller and a solid state relay, and the solid state relay is arranged on one power supply loop break point of the transparent electric heating film; the temperature sensor collects the temperature of the glass surface in real time and feeds the temperature back to the temperature controller, and under the condition that the solid state relay is communicated with the break point, the temperature controller judges whether the temperature reaches a preset first temperature threshold value according to the fed-back temperature, and if so, the solid state relay is controlled to disconnect a power supply loop of the transparent electric heating film; under the condition that the solid-state relay is disconnected from the power supply loop of the transparent electric heating film, if the feedback temperature is lower than a preset second temperature threshold value, the temperature controller controls the solid-state relay to be connected with the breakpoint; the first temperature threshold is greater than the second temperature threshold.
In one embodiment, for the elongated third observation window with the width smaller than 20cm, a plurality of display devices arranged in the length direction are arranged outside the third observation window, and the plurality of display devices are intelligent display devices with man-machine interaction chips.
In one embodiment, the two opposite sides of the wall surface of the icing wind tunnel test section are provided with an illumination window, a display window and a shooting window.
In a second aspect, an embodiment provides an icing wind tunnel test image capturing and monitoring method, including: the method comprises the steps that a shooting device is arranged outside at least one observation window on at least one side of the wall surface of an icing wind tunnel test section, shooting is conducted on the current test process in the icing wind tunnel test section through the observation window, meanwhile, a display device arranged outside the at least one observation window on the other side of the wall surface of the icing wind tunnel test section synchronously displays test parameters of the current test, and when the shooting device shoots a model state change process in the icing wind tunnel test section, shooting is conducted in a shooting picture to obtain the test parameters displayed on the display device; the font display height of the test parameters is above 6 cm.
In one embodiment, shooting devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, the shooting devices on the two sides shoot the current test process in the icing wind tunnel test section at the same time, display devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and the display devices on the two sides synchronously display the test parameters of the current test.
In one embodiment, illumination devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and the illumination devices are controlled to illuminate the icing wind tunnel test section through an observation window in the current test process; the illumination device is arranged outside the observation window.
In one embodiment, the observation window of the icing wind tunnel adopts a multi-layer glass observation window, a transparent electric heating film is arranged between two adjacent layers of glass, and the transparent electric heating film is controlled to heat in the current test process so as to prevent the observation window from fogging or frosting.
In one embodiment, the control of heating the transparent electrically heated film during the current test to prevent fogging or frosting of the viewing window comprises:
collecting the temperature of the surface of the glass in real time and feeding back, judging whether the temperature reaches a preset first temperature threshold value according to the fed-back temperature under the condition that the power supply loop of the transparent electric heating film is communicated, and if so, disconnecting the power supply loop of the transparent electric heating film; under the condition that the power supply loop of the transparent electric heating film is disconnected, judging whether the temperature is lower than a preset second temperature threshold value according to the fed-back temperature, and if so, communicating the power supply loop of the transparent electric heating film; the first temperature threshold is greater than the second temperature threshold.
The beneficial effects of the invention are as follows:
under the condition that the image capturing and illumination arrangement is not hindered, the display device is arranged outside the opposite side wall surface of the image capturing device, and the display window is arranged outside the opposite side observation window of the image capturing device, so that the displayed test parameters become a part of the test wall surface and serve as the background wall of the image capturing device opposite to the test section, therefore, the test parameters in the display window can be captured in the process of capturing an icing wind tunnel through the observation window, and the display height of fonts of the test parameters is more than 6cm, so that the test parameters can be clearly captured.
Drawings
FIG. 1 is a schematic diagram of a wall picture of an icing wind tunnel test section taken according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a wall picture of an icing wind tunnel test section taken according to another embodiment of the present application;
fig. 3 is a schematic flow chart of an icing wind tunnel test section test camera monitoring method according to an embodiment of the present application.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
For convenience of explanation of the inventive concept of the present application, an image capturing and monitoring technique for the icing wind tunnel test will be briefly described below.
In the icing wind tunnel test, a test model is arranged in a test section, and the test section is arranged in a residence chamber simulating a high air pressure environment of 2 ten thousand meters at maximum and having a temperature of minus 40 ℃. The multiple cameras arranged on the outer wall surface of the glass observation window of the test section shoot the state of the test model from multiple angles, and are important equipment for monitoring the icing and preventing and removing states of the test model.
After each test is finished, the test monitoring video, the shooting of the hole, the scanning of ice shape, the test report and the like are submitted to the entrusting test party, and the test video is an important component of test data. When the consignor inquires test data, the consignor pays attention to test parameters corresponding to the icing growth or shedding process of the model in the test, wherein the main test parameters include test wind speed, temperature, ambient air pressure, spraying time, liquid water content, particle size and the like. The traditional method is to correspondingly search the test parameters at the time according to the information of the video clock. The above query approach is inefficient because of the large content of the video.
In order to solve the problem of synchronously recording test parameters of the video, a camera background program can be developed jointly with a camera manufacturer, and test parameter information is integrated into camera monitoring system software through a network. The method needs to be customized and developed after a camera development unit provides source codes, and has large investment. Meanwhile, due to the small requirements and information security factors, the method is difficult to realize.
In view of the above problems, an embodiment of the present application provides an icing wind tunnel test imaging monitoring system, where transparent observation windows are disposed on two opposite sides of a wall surface of an icing wind tunnel test section, and a plurality of observation windows are disposed on each side. Referring to fig. 1 and 2, there may be a plurality of observation windows, and the observation windows on opposite sides of the wall surface of the icing wind tunnel test section may include a first observation window, a second observation window and a third observation window. Wherein, the first observation window on at least one side is provided with an illumination device outside as an illumination window; a shooting device is arranged outside the second observation window on at least one side and is used as a shooting window; at least outside the third observation window on the opposite side of the shooting window, a display device is arranged as a display window. The illuminating device is used for illuminating the icing wind tunnel test section through the first observation window, the shooting device is used for shooting the model state change of the test section and the screen of the display device through the second observation window, the display device is used for displaying the test parameters tested in the current icing wind tunnel test section through the third observation window, and the display height of fonts of the test parameters is more than 6 cm.
It will be appreciated by those skilled in the art that the wall frame structure of the captured icing wind tunnel test section shown in fig. 1 and 2 does not constitute a limitation on the wall frame structure of the icing wind tunnel test section and may include more or fewer components than shown, or may be combined with certain components, or may be arranged with different components.
The observation windows are arranged on the wall surfaces of the icing wind tunnel test section, and can be used for installing shooting devices, lighting devices and the like. Based on the icing wind tunnel test imaging monitoring system, under the condition that imaging and illumination arrangement are not hindered, a display device is arranged outside the opposite side wall surface of the imaging device, and the display window is arranged outside the opposite side observation window of the imaging window, so that the displayed test parameters become a part of the test wall surface and serve as the background wall of the imaging device opposite to the test section, therefore, the test parameters in the display window can be shot in the process of shooting the model state change of the test in the icing wind tunnel test section through the observation window, and the display height of fonts of the test parameters is more than 6cm, so that the test parameters can be clearly shot. As the test parameters, typical test parameters are exemplified, and may include wind speed, air flow temperature, simulated height, liquid water content, liquid water particle size, engine intake air flow rate, and the like.
Through the icing wind tunnel test imaging monitoring system, the display device can be set to communicate with each subsystem of the wind tunnel in real time, so that each test parameter is synchronously displayed on the display device on the wall surface of the test section along with the test process in real time, and therefore test parameter information and test model state are synchronously shot into a test shooting file, and when test data are checked, the icing and ice preventing and removing states of the test model and the test parameter information can be synchronously checked along with the shooting file, and data analysis and processing are facilitated. The process test data is simple to query, high in query efficiency, simple to implement and low in cost.
As can be appreciated by those skilled in the art, the space occupied by the model in the wind tunnel test section in the icing wind tunnel test process is not more than 5% of the space occupied by the wind tunnel test section, so that the problem that the test parameters are shielded by the test body during shooting is avoided.
In one embodiment, a multi-layer glass is used for any one of the viewing windows. In order to solve the problem that the view field is blocked due to the fact that the surface of a glass window is fogged or frosted in the spraying process, a transparent electric heating film is arranged between two adjacent layers of glass in a test section and is used for electrically heating the glass, so that the view field caused by the fact that the observation window is fogged or frosted is prevented from being blocked.
In one embodiment, to facilitate automatic control of the transparent electric heating film, the icing wind tunnel test camera monitoring system further comprises an electric heating control device, wherein the electric heating control device comprises a temperature sensor (not shown in the figure), a temperature controller and a solid state relay. The solid state relay is arranged on a power supply loop breakpoint of the transparent electric heating film, the temperature sensor acquires the temperature of the glass surface in real time and feeds the temperature back to the temperature controller, based on the arrangement of the temperature controller, under the condition that the solid state relay is communicated with the breakpoint, the temperature controller judges whether the temperature reaches a preset first temperature threshold value or not according to the fed-back temperature, and if so, the solid state relay is controlled to disconnect the power supply loop of the transparent electric heating film; under the condition that the solid state relay is disconnected from the power supply loop of the transparent electric heating film, if the feedback temperature is lower than a preset second temperature threshold value, the temperature controller controls the solid state relay to be connected with the breakpoint; wherein the first temperature threshold is greater than the second temperature threshold.
In one embodiment, the first temperature threshold is set to 40 ℃, and the second temperature threshold is set to 35 ℃, although the setting may be performed according to actual requirements.
For the display window, taking a certain icing wind tunnel as an example, the icing wind tunnel is provided with three test sections, and the size width of the observation window of each test section is greatly different from 8cm to 3.2 m. The observation windows of the main test section are elongated windows with the width of 8cm, and the other two test section observation windows are larger. In one embodiment, for an elongated third viewing window having a width less than 20cm, in the case where the test parameters to be displayed are sufficiently noticeable, one display device cannot display enough test parameters, so that a plurality of display devices arranged in the length direction are disposed outside the third viewing window, and each display device displays a different test parameter to realize the display of enough test parameters. In one embodiment, referring to fig. 2 (in the drawing, T represents temperature, H represents height, and V represents speed) for the elongated third observation window with the width of 8cm, three display devices arranged in the length direction are disposed outside the third observation window and closely attached to the observation window, and the three display devices can be connected into a measurement and control site through a network, and then are connected into a measurement and control ring network switch of the icing wind tunnel through a network cable. Referring to fig. 1 (in the drawing, T represents temperature, H represents height, and V represents speed), for the third observation window with a larger width, a display device with a larger display interface may be provided to display the test parameters.
In one embodiment, the plurality of display devices are intelligent display devices with man-machine interaction chips, such as a PC integrated machine, a tablet, and the like.
In one embodiment, consider that only 1 test section is installed to operate in the residence at any time, the test information system of the three test sections of the wind tunnel shares 1 IP address. And setting 1 test information transfer box and aviation socket in each test section, and connecting the power supply and network connection of the test information display system of each test section to the aviation socket of the transfer box. And installing aviation plugs connected with the wind tunnel measurement and control network cable and the power supply in the residence chamber, and connecting the aviation plugs with unified test information in the residence chamber into the socket when the test section is replaced, so that wiring can be completed.
In one embodiment, the transparent electric heating films of the three test sections share one set of electric heating control device, the heating power supply loops of the transparent electric heating films of each test section are connected in parallel, and the heating cables and the temperature feedback cables of the transparent electric heating films are connected into the transparent electric heating film power supply and signal sockets of each test section. And the electric heating and temperature feedback cables output by the transparent electric heating film control cabinet are respectively connected with the resident room aviation plug cable. When the test section is replaced, the transparent electric heating film heating and temperature feedback cables unified in the residence are respectively connected into the power supply and signal socket of the test section switching box.
In one embodiment, illumination windows, display windows and shooting windows are arranged on two opposite sides of the wall surface of the icing wind tunnel test section. It will be appreciated that there may be one or more illumination windows on each side, and there may be one or more display windows on each side, and there may be one or more photographing windows on each side. Any one of the observation windows may be set as any one of the illumination window, the display window, and the photographing window, or may not be set.
An embodiment of the present application provides an icing wind tunnel test image monitoring method, which is combined with the icing wind tunnel test image monitoring of any one of the embodiments to jointly realize image monitoring of an icing wind tunnel test. The method comprises the following steps: the method comprises the steps that a shooting device is arranged outside at least one observation window on at least one side of the wall surface of the icing wind tunnel test section, current test process in the icing wind tunnel is shot through the observation window, meanwhile, a display device arranged outside the at least one observation window on the other side of the wall surface of the icing wind tunnel test section synchronously displays test parameters of the current test, and when the shooting device shoots a model state change process in the icing wind tunnel, the shooting device shoots test parameters displayed on the display device in a shooting picture.
In one embodiment, the font display height of the test parameters is above 6 cm.
The camera shooting monitoring method is simple to realize and low in cost. The method can shoot the experimental parameters in the display window to obtain the experimental parameters in the icing wind tunnel in the process of shooting the icing wind tunnel through the observation window, so that the shooting file obtained by the method is simple in process experiment number inquiry and high in inquiry efficiency.
In an embodiment, shooting devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, the shooting devices on the two sides shoot the model state change process in the icing wind tunnel test section at the same time, display devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and the display devices on the two sides synchronously display the test parameters of the current test, so that the current test process is shot from different angles, and the test parameters of the current test are recorded in shooting files at the same time of shooting.
In one embodiment, the lighting devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, the lighting devices are arranged outside the observation window, and the lighting devices are controlled to illuminate into the icing wind tunnel test section through the observation window in the current test process, so that the test process of the current test can be clearly shot.
In one embodiment, the observation window of the icing wind tunnel adopts a multi-layer glass observation window, a transparent electric heating film is arranged between two adjacent layers of glass, and the transparent electric heating film is controlled to heat in the current test process so as to prevent the observation window from fogging or frosting.
In one embodiment, controlling the heating of the transparent electrically heated film during the current test to prevent fogging or frosting of the viewing window comprises: collecting the temperature of the surface of the glass in real time and feeding back, judging whether the temperature reaches a preset first temperature threshold value according to the fed-back temperature under the condition that the power supply loop of the transparent electric heating film is communicated, and if so, disconnecting the power supply loop of the transparent electric heating film; under the condition that the power supply loop of the transparent electric heating film is disconnected, judging whether the temperature is lower than a preset second temperature threshold value according to the fed-back temperature, and if so, communicating the power supply loop of the transparent electric heating film; wherein the first temperature threshold is greater than the second temperature threshold.
In one embodiment, referring to fig. 3, the icing wind tunnel test image capturing and monitoring method includes:
and step S10, controlling the transparent electric heating film to heat.
Step S20, judging whether the temperature of the heated observation window reaches a preset second temperature threshold value, and if so, entering the next step.
In step S30, the lighting device is controlled to start lighting.
In step S40, the photographing device is controlled to start photographing.
And S50, controlling the icing wind tunnel test to start and controlling the display device to synchronously display test parameters.
Through the method steps, on one hand, the observation window is prevented from being fogged or frozen in the whole test shooting process, and on the other hand, enough shooting definition and the integrity of test parameter display are ensured.
An embodiment of the present application provides a computer-readable storage medium, on which a program is stored, where the stored program includes a method for monitoring icing wind tunnel test imaging that can be loaded and processed by a processor in any of the above embodiments.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by a computer program. When all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a computer readable storage medium, and the storage medium may include: read-only memory, random access memory, magnetic disk, optical disk, hard disk, etc., and the program is executed by a computer to realize the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above can be realized. In addition, when all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and the program in the above embodiments may be implemented by downloading or copying the program into a memory of a local device or updating a version of a system of the local device, and when the program in the memory is executed by a processor.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (10)
1. The icing wind tunnel test camera monitoring system is characterized in that transparent observation windows are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and a plurality of observation windows are arranged on each side;
the observation window comprises a first observation window, a second observation window and a third observation window; wherein, the first observation window on at least one side is provided with an illumination device outside as an illumination window; a shooting device is arranged outside the second observation window on at least one side and is used as a shooting window; a display device is arranged outside at least a third observation window on the opposite side of the shooting window and is used as a display window; the lighting device is used for lighting the icing wind tunnel test section through the first observation window, the shooting device is used for shooting the model state change of the test section and the screen of the display device through the second observation window, and the display device is used for displaying the test parameters tested in the current icing wind tunnel test section through the third observation window, so that the displayed test parameters become a part of the test wall surface and serve as a background wall of the shooting device opposite to the test section; the font display height of the test parameters is more than 6 cm; the test parameters include wind speed, air flow temperature, simulated height, liquid water content, liquid water particle size and engine air inlet flow.
2. The icing wind tunnel test imaging monitoring system of claim 1 wherein any one of the viewing windows is configured as a multiple layer glass viewing window, and a transparent electrical heating film is disposed between two adjacent layers of glass for electrically heating the viewing window to prevent fogging or frosting of the viewing window.
3. The icing wind tunnel test camera monitoring system of claim 2 further comprising an electrical heating control device comprising a temperature sensor, a temperature controller and a solid state relay, said solid state relay being disposed at a power loop break point of said transparent electrical heating film; the temperature sensor collects the temperature of the glass surface in real time and feeds the temperature back to the temperature controller, and under the condition that the solid state relay is communicated with the break point, the temperature controller judges whether the temperature reaches a preset first temperature threshold value according to the fed-back temperature, and if so, the solid state relay is controlled to disconnect a power supply loop of the transparent electric heating film; under the condition that the solid-state relay is disconnected from the power supply loop of the transparent electric heating film, if the feedback temperature is lower than a preset second temperature threshold value, the temperature controller controls the solid-state relay to be connected with the breakpoint; the first temperature threshold is greater than the second temperature threshold.
4. The icing wind tunnel test imaging monitoring system of claim 1 wherein for an elongated third observation window having a width of less than 20cm, a plurality of display devices arranged in the length direction are provided outside the third observation window, and the plurality of display devices are intelligent display devices having human-computer interaction chips.
5. The icing wind tunnel test imaging monitoring system of claim 1 wherein the opposite sides of the icing wind tunnel test section wall are provided with an illumination window, a display window and a photographing window.
6. The icing wind tunnel test camera monitoring method is characterized by comprising the following steps: the method comprises the steps that a shooting device is arranged outside at least one observation window on at least one side of the wall surface of an icing wind tunnel test section, current test process in the icing wind tunnel test section is shot through the observation window, meanwhile, a display device arranged outside the at least one observation window on the other side of the wall surface of the icing wind tunnel test section synchronously displays test parameters of the current test, the displayed test parameters become a part of the test wall surface and serve as a background wall of the shooting device opposite to the test section, and when the shooting device shoots a model state change process in the icing wind tunnel test section, the shooting device shoots test parameters displayed on the display device in a shooting picture; the font display height of the test parameters is more than 6 cm; the test parameters include wind speed, air flow temperature, simulated height, liquid water content, liquid water particle size and engine air inlet flow.
7. The icing wind tunnel test camera monitoring method according to claim 6, wherein shooting devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, shooting devices on two sides shoot the current test process in the icing wind tunnel test section at the same time, display devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and the display devices on two sides synchronously display the test parameters of the current test.
8. The icing wind tunnel test camera monitoring method according to claim 6, wherein illumination devices are arranged on two opposite sides of the wall surface of the icing wind tunnel test section, and the illumination devices are controlled to illuminate into the icing wind tunnel test section through the observation window in the current test process; the illumination device is arranged outside the observation window.
9. The icing wind tunnel test camera monitoring method according to claim 6, wherein the observation window of the icing wind tunnel is a multi-layer glass observation window, a transparent electric heating film is arranged between two adjacent layers of glass, and the transparent electric heating film is controlled to heat in the current test process so as to prevent the observation window from fogging or frosting.
10. The icing wind tunnel test camera monitoring method of claim 9 wherein said controlling the heating of the transparent electrically heated film during the current test to prevent fogging or frosting of the viewing window comprises:
collecting the temperature of the surface of the glass in real time and feeding back, judging whether the temperature reaches a preset first temperature threshold value according to the fed-back temperature under the condition that the power supply loop of the transparent electric heating film is communicated, and if so, disconnecting the power supply loop of the transparent electric heating film; under the condition that the power supply loop of the transparent electric heating film is disconnected, judging whether the temperature is lower than a preset second temperature threshold value according to the fed-back temperature, and if so, communicating the power supply loop of the transparent electric heating film; the first temperature threshold is greater than the second temperature threshold.
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