CN112911275A - Device for testing image intensifier under low-pressure variable-temperature environment - Google Patents
Device for testing image intensifier under low-pressure variable-temperature environment Download PDFInfo
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- CN112911275A CN112911275A CN202110046851.XA CN202110046851A CN112911275A CN 112911275 A CN112911275 A CN 112911275A CN 202110046851 A CN202110046851 A CN 202110046851A CN 112911275 A CN112911275 A CN 112911275A
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- low
- low temperature
- image intensifier
- pressure
- temperature box
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
Abstract
The invention provides a device for testing an image intensifier under a low-pressure and variable-temperature environment. The temperature control unit, the vacuum unit and the power supply are all arranged outside the high-low temperature box, and the low-pressure test chamber is arranged inside the high-low temperature box; the light source system is arranged on the side surface of the high-low temperature box; the high-low temperature box comprises a sealable high-low temperature box body, the front surface of the high-low temperature box body is provided with a high-low temperature box door, a controller and a high-low temperature box observation window, and a refrigeration pipeline, a power supply interface and a heating wire are arranged in the high-low temperature box body; the controller comprises a controller circuit board, a controller display screen and a controller keyboard which are electrically connected with the controller circuit board, and the controller is used for controlling the temperature control unit, the vacuum unit and the power supply; the high-low temperature observation window is arranged on the high-low temperature box door and used for observing the heating and refrigerating conditions inside the high-low temperature box. The invention can simulate the working state of the image intensifier under different temperatures in high-altitude low-pressure environment, and has high integration level and convenient operation.
Description
Technical Field
The invention relates to a device for testing an image intensifier under the environment of low pressure and variable temperature, belonging to the technical field of testing of image intensifiers.
Background
Currently, the low-light level image intensifier plays an important role and is widely applied in various social fields. There are applications where it is often desirable for an image intensifier to operate in extreme environments, including mounting on an aviation, aerospace or pilot helmet, in cases of high altitude environments. In such applications, the low-light-level image intensifier needs to meet due performance indexes in a low-pressure variable-temperature environment.
At present, a test device capable of simulating the working stability of an image intensifier at different temperatures in a high-altitude low-air-pressure environment is lacked.
Disclosure of Invention
The present invention provides a low-pressure temperature-changing testing device for an image intensifier, which can simulate and test the working states of the image intensifier at different temperatures in a high-altitude low-pressure environment, aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
a device for testing an image intensifier in a low-pressure and variable-temperature environment comprises a high-temperature box, a low-pressure test chamber, a temperature control unit, a light source system, a vacuum unit and a power supply.
The temperature control unit, the vacuum unit and the power supply are all installed below the high-low temperature box, and the low-pressure test chamber is arranged inside the high-low temperature box.
The high-low temperature box comprises a sealable high-low temperature box body, a high-low temperature box door, a controller and a high-low temperature box observation window are arranged on the front surface of the high-low temperature box body, and a refrigeration pipeline, a power supply interface and a heating wire are arranged in the high-low temperature box body.
The controller comprises a controller circuit board, a controller display screen and a controller keyboard which are electrically connected with the controller circuit board, and the controller is used for controlling the temperature control unit, the vacuum unit and the power supply. The controller can set temperature rising and temperature lowering rate curves, and the adjustable parameters include heating and cooling temperature, vacuum degree, power supply output voltage, light wave wavelength and illumination emitted by the light source system, and the like.
The side wall of one side of the high-low temperature box body is provided with a circular through hole, the low-pressure test chamber arranged in the high-low temperature box body is connected to the through hole from the inside through a flange, and a light source system is connected to the outside of the through hole. The light source system is used for irradiating incident light with certain illumination or wavelength to the cathode end of the image intensifier in the test process by adjusting the current and replacing the light source type so as to form an output image at the anode and judge the working state of the image intensifier. The light source system is positioned outside the high-low temperature box so as to avoid the influence of temperature change on the stability of the light source in the test process.
The high-low temperature observation window is arranged on the high-low temperature box door and used for observing the heating and refrigerating conditions inside the high-low temperature box.
The refrigerating pipeline is connected with a refrigerator in the temperature control unit and used for cooling the interior of the high-low temperature box.
The heating wires are connected with a heater inside the temperature control unit and used for heating the inside of the high-low temperature box.
The power supply interface is positioned inside the high-low temperature box, and the power supply interface comprises four binding posts which respectively penetrate through the inner partition plate and the lower wall of the high-low temperature box body through leads to be connected with a direct current stabilized voltage power supply and used for providing working voltage for the image intensifier.
The low-pressure test chamber comprises an image acquisition window, a low-pressure test chamber sealing door, a low-pressure test chamber observation window, a low-pressure test chamber shell, an air exhaust pipeline, an air inlet pipeline, a power supply interface, a clamping seat and a mounting seat.
The image acquisition window is arranged on the side wall of the other side of the high-low temperature box body opposite to the circular through hole connected with the light source system.
The low-pressure test chamber observation window is arranged on the low-pressure test chamber shell and can be used for observing through the high-low temperature observation window.
The low-pressure test chamber sealing door is connected with the low-pressure test chamber shell through the hexagon bolts, the sealing rubber ring is arranged in the middle, the sealing performance of the chamber body during testing is guaranteed, and meanwhile the low-pressure test chamber sealing door can be detached through detaching the bolts so as to conveniently mount the clamping seat and the image intensifier to be tested.
The air exhaust pipeline and the air inlet pipeline are connected with the vacuum unit and used for adjusting the vacuum degree of the low-pressure test chamber. The vacuum unit exhausts the low-pressure test chamber through the exhaust pipeline to realize the low-pressure state, and fills nitrogen or air into the low-pressure test chamber through the air inlet pipeline to realize the recovery of the normal-pressure state in the chamber body.
The power supply interface can be connected with a direct current stabilized power supply interface outside the high-low temperature box through a lead, and is connected with the power supply or the power supply contact plate of the image intensifier through a lead in the low-pressure test chamber, so that normal working voltage can be input to the image intensifier in a low-pressure environment. The clamping seat is located inside the low-pressure test chamber and connected with the low-pressure test chamber shell, and the mounting seat is mounted on the clamping seat and fixed through the limiting groove hole. The clamping seat is used for placing and fixing the image intensifier to be tested, and the installation position of the clamping seat can be adjusted along the length direction of the low-pressure testing cabin to adjust the placing position of the image intensifier in the low-pressure testing cabin. The image acquisition window is used for acquiring the working condition of the image intensifier in the test process, and a camera can be directly used for acquiring an image output by the anode of the image intensifier through the image acquisition window.
The invention has the beneficial effects that:
the invention can realize the simulation of the high-altitude working environment of the image intensifier, and test the working stability of the image intensifier under different working temperatures in a low-pressure environment by combining temperature regulation. Necessary simulation tests are provided for the image intensifier applied to high-altitude operation environments such as military aviation, aerospace vehicles, pilot helmets and the like.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for testing an image intensifier under a low-pressure-temperature-variable environment according to the present invention.
Fig. 2 is a schematic diagram of an internal structure of a high-temperature and low-temperature chamber of an apparatus for testing an image intensifier under a low-pressure temperature-variable environment according to the present invention.
Fig. 3 is a schematic structural view of a low-pressure test chamber of an apparatus for testing an image intensifier under a low-pressure temperature-variable environment according to the present invention.
In the drawings, the components represented by the respective symbols are listed below:
1. high-low temperature box, 2, controller display screen, 3, controller keyboard, 4, controller circuit board, 5, temperature control unit, 6, high-low temperature box door, 7, high-low temperature box observation window, 8, light source system, 9, vacuum unit, 10, power supply, 11, high-low temperature box body 12, refrigeration pipeline, 13, low-pressure test chamber, 14, image acquisition window, 15, power supply interface, 16, low-pressure test chamber sealing door, 17, low-pressure test chamber observation window, 18, heating wire, 19, low-pressure test chamber shell, 20, air exhaust pipeline, 21, air inlet pipeline, 22, ceramic sealing binding post, 23, holder, 24, mounting seat.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in the figure, the invention provides a device for testing an image intensifier under the environment of low pressure and temperature change, which is hereinafter referred to as a tester for short, and comprises a high-low temperature box 1, a low-pressure test chamber 13, a temperature control unit 5, a light source system 8, a vacuum unit 9 and a power supply 10.
The temperature control unit 5, the vacuum unit 9 and the power supply 10 are all installed below the high-low temperature box 1 and are respectively used for changing the internal temperature of the high-low temperature box 1, changing the air pressure value in the low-air-pressure test chamber 11 and providing working voltage for the image intensifier. The low-pressure test chamber 11 is arranged in the high-low temperature box 1, and one side of the low-pressure test chamber is connected with the light source system 8.
The invention provides a low-pressure variable-temperature tester for an image intensifier, which comprises the following working procedures: the tester is placed on a flat working ground, and a power supply is connected to the tester. And (4) opening the high-low temperature box door 6, using a hexagonal wrench to remove the hexagonal bolt on the low-pressure test cabin sealing door 16, and opening the sealing door. The holder 23 is mounted on the mounting seat 24, the test image intensifier is placed on the holder 23, the power supply line of the image intensifier is connected with the ceramic sealing binding post 22 in the chamber, the low-voltage test chamber sealing door 16 is mounted, and the low-voltage test chamber sealing door is fastened again by bolts. The ceramic sealing wiring terminal 22 outside the cabin is connected with the power interface 15 through a conducting wire, the high-low temperature box door 6 is closed, the controller display screen 2 is opened, the controller keyboard 3 is used for setting test parameters, a test program is executed, and the controller display screen 2 is closed. The image intensifier operation state is observed on the image acquisition window 14 side, and the image intensifier anode output image is acquired using the camera. And after the program operation is finished, opening the high and low temperature box door 6, detaching the low-pressure test chamber sealing door 16, taking out the tested image intensifier, installing the low-pressure test chamber sealing door 16, closing the high and low temperature box door 6 and closing all power supplies.
The testing parameters which can be set by the controller comprise a temperature rising and reducing curve, a vacuum degree, power output parameters, the wavelength and the illumination of the output light of the light source system and the like.
The high-low temperature box observation window 7 is used for observing the working state inside the high-low temperature box and the equipment condition of the low-pressure test chamber. The low-pressure test chamber observation window 17 is used for observing the placement position and the working condition of the image intensifier in the low-pressure test chamber.
During testing, attention needs to be paid to the fact that equipment is in a shutdown or standby state when the image intensifier is clamped, replaced and debugged, attention needs to be paid to closing a display screen of the controller in the testing process, or a light shielding plate is used for shielding an observation window, and influence of ambient light on testing of the image intensifier is avoided. The power output is adjusted according to the power supply parameters of different types of image intensifiers. The connecting wires in the high-low temperature box are high-temperature-resistant wires with proper types and specifications according to actual test temperature.
The tester should be placed in a dry and clean dark room, and kept at a constant temperature of about 20 ℃ and humidity of less than 60%. The surfaces of the tester should be kept clean and the threads, shafts and other friction parts should be lubricated. The interior walls of the low pressure test chamber should remain clean. After the tester is used, the box door is closed, and various accessories are put into the accessory box.
The device for testing the image intensifier in the low-pressure and variable-temperature environment can test the working state and working stability of the image intensifier in the low-pressure environment at high temperature and low temperature, and is high in equipment integration level and convenient to operate.
The light shielding plate is not shown in the figure, specifically, the light shielding plate is made of a light-proof material, and the light shielding plate is detachably connected with the high-low temperature chamber observation window 7, the image acquisition window 14 and the low-pressure test chamber observation window 17 by adopting the prior art, such as clamping connection, magnetic absorption connection and the like.
Preferably, as shown in fig. 3, the mounting seat 24 is provided with a rectangular limiting slot, and the clamping seat 23 is embedded into the limiting slot through a lower rectangular positioning block to perform a fixing function.
Preferably, the holder 23 is of a universal type, and is suitable for most image intensifier whole tube tests.
Preferably, the tester can also be used for testing a single tube of the image intensifier. The single-tube special clamping seat can be designed and selected, and the cathode input lead, the MCP output lead, the anode input lead of the single tube and four ceramic sealing binding posts 22 in the cabin respectively adjust the power supply parameters output to the four power interfaces 15 by the power supply 10, so as to provide working voltage meeting the requirements for the cathode, the MCP and the anode of the image intensifier.
Preferably, the high and low temperature box 1 can realize a temperature range from-70 ℃ to +75 ℃.
It is preferable thatThe used vacuum unit 9 is a cascade mechanical pump, and the ultimate vacuum can reach 5 multiplied by 10-2mbar。
Preferably, the power supply 10 used is a high voltage power supply, and can stably output a voltage of 6000V or more.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. An apparatus for testing an image intensifier under a low-pressure-temperature-variable environment, comprising:
the device comprises a high-low temperature box, a low-pressure test cabin, a temperature control unit, a light source system, a vacuum unit and a power supply;
the temperature control unit, the vacuum unit and the power supply are all arranged outside the high-low temperature box; the low-pressure test chamber is arranged inside the high-low temperature box; the light source system is arranged on the side surface of the high-low temperature box;
the high-low temperature box comprises a sealable high-low temperature box body, the front surface of the high-low temperature box body is provided with a high-low temperature box door, a controller and a high-low temperature box observation window, and a refrigeration pipeline, a power supply interface and a heating wire are arranged in the high-low temperature box body;
the controller comprises a controller circuit board, a controller display screen and a controller keyboard which are electrically connected with the controller circuit board, and the controller is used for controlling the temperature control unit, the vacuum unit and the power supply;
the high-low temperature observation window is arranged on the high-low temperature box door and used for observing the heating and refrigerating conditions inside the high-low temperature box.
2. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 1, further comprising:
the low-pressure test chamber comprises an image acquisition window, a low-pressure test chamber sealing door, a low-pressure test chamber observation window, a low-pressure test chamber shell, an air exhaust pipeline, an air inlet pipeline, a power supply interface, a clamping seat and a mounting seat;
the image acquisition window is arranged on the side wall of the other side of the high-low temperature box body opposite to the circular through hole connected with the light source system;
the low-pressure test chamber observation window is arranged on the low-pressure test chamber shell and can be observed through the high-low temperature observation window;
the low-pressure test chamber sealing door is connected with the low-pressure test chamber shell through a hexagon bolt, a rubber sealing ring is arranged in the middle, and the low-pressure test chamber sealing door can be detached through detaching the bolt while the sealing performance of the chamber body during the test period is ensured, so that a clamping seat and an image intensifier to be tested can be conveniently installed;
the air exhaust pipeline and the air inlet pipeline are connected with the vacuum unit and are used for adjusting the vacuum degree of the low-pressure test chamber; the vacuum unit exhausts the low-pressure test chamber through the exhaust pipeline to realize the low-pressure state, and fills nitrogen or air into the low-pressure test chamber through the air inlet pipeline to realize the recovery of the normal-pressure state in the chamber body.
3. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 2, further comprising:
the power supply interface is connected with a direct current stabilized power supply output interface outside the high-low temperature box through a lead, and is connected with an image intensifier power supply or a power supply contact piece through a lead in the low-pressure test chamber, and is used for inputting normal working voltage to the image intensifier in a low-pressure environment;
the clamping seat is positioned in the low-pressure test chamber and connected with the shell of the low-pressure test chamber, and the mounting seat is arranged on the clamping seat and fixed through the limiting slotted hole;
the clamping seat is used for placing and fixing the image intensifier to be tested, and the installation position of the clamping seat can be adjusted along the length direction of the low-pressure testing cabin to adjust the placing position of the image intensifier in the low-pressure testing cabin.
4. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 2, further comprising:
the image acquisition window is used for acquiring the working condition of the image intensifier in the test process, and a camera can be directly used for acquiring an image output by the anode of the image intensifier through the image acquisition window.
5. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 1, further comprising:
the temperature control unit further comprises a refrigerator arranged in the temperature control unit, and the refrigerating pipeline is connected with the refrigerator and used for cooling the inside of the high-low temperature box.
6. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 1, further comprising:
the heating wires are connected with a heater inside the temperature control unit and used for heating the inside of the high-low temperature box.
7. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 1, further comprising:
the power supply interface is positioned inside the high-low temperature box, and the power supply interface comprises four binding posts which respectively penetrate through the inner partition plate and the lower wall of the high-low temperature box body through leads to be connected with a direct current stabilized voltage power supply and used for providing working voltage for the image intensifier.
8. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 1, further comprising:
the side wall of one side of the high and low temperature box body is provided with a circular through hole, a low-pressure test chamber arranged in the high and low temperature box body is connected to the through hole from the inside through a flange, and a light source system is connected to the outside of the through hole; the light source system is used for irradiating incident light with certain illumination or wavelength to the cathode end of the image intensifier in the test process by adjusting the current and replacing the light source type so as to form an output image at the anode and judge the working state of the image intensifier.
9. The apparatus for testing an image intensifier under a low-pressure-to-temperature environment as recited in claim 3, further comprising:
the mounting seat is provided with a rectangular limiting groove hole, and the clamping seat is embedded into the limiting groove hole through a rectangular positioning block below the clamping seat to play a role in fixing.
10. The apparatus for testing the image intensifier according to any one of claims 1 to 8, wherein:
the controller can set a temperature rise and temperature fall rate curve, and parameters can be adjusted to include heating and refrigerating temperature, vacuum degree, power supply output voltage, light wave wavelength emitted by the light source system and illumination.
11. The apparatus for testing an image intensifier under a variable temperature environment of low pressure as claimed in claim 9, wherein:
the light source system 8 provides an adjustable light source for the image intensifier test, and the adjustable parameters comprise the illumination intensity and the wavelength range of the light source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110046851.XA CN112911275B (en) | 2021-01-14 | 2021-01-14 | Device for testing image intensifier under low-pressure variable-temperature environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110046851.XA CN112911275B (en) | 2021-01-14 | 2021-01-14 | Device for testing image intensifier under low-pressure variable-temperature environment |
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| CN112911275A true CN112911275A (en) | 2021-06-04 |
| CN112911275B CN112911275B (en) | 2023-03-07 |
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