CN114252388A - Multi-factor coupling reliability test device - Google Patents
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Abstract
The invention relates to the field of material reliability testing, and particularly discloses a multi-factor coupling reliability testing device which comprises a shielding bin, a multi-factor environment simulation system, a data acquisition system and a control system, wherein the shielding bin is used for providing a shielding signal for a shielding bin; the multi-factor environment simulation system is used for simulating the environment and comprises: the device comprises an electromagnetic simulation component, a light irradiation component and a temperature control component; the electromagnetic simulation component is used for transmitting an electromagnetic signal in the shielding bin so as to simulate an electromagnetic environment; the light irradiation component is used for carrying out light irradiation on the sample to be detected through the light-emitting unit in the shielding bin; the temperature control component is used for heating or cooling the interior of the shielding bin. The testing device is used for testing the service life of the material through a multi-factor environment including a complex electromagnetic environment, and provides a quick, reliable and stable technical means for testing the electromagnetic environment performance of electronic equipment and materials; the method has important application value in the aspects of shortening the aging life test period of electronic equipment and materials, reducing development input cost, improving the actual use capability of the equipment and the like.
Description
Technical Field
The invention relates to the field of material reliability testing, in particular to a multi-factor coupling reliability testing device.
Background
With the development of modern information technology, modern electronic equipment is more and more precise in development, electromagnetic environments to be dealt with are more and more complex, electromagnetic waves can be actively or passively emitted by the electronic equipment and the power equipment in a normal working state, the near field environment generated by equipment radiation is enhanced due to the increase of the power of communication, radar and electromagnetic interference in the electronic equipment, and meanwhile, the electromagnetic environment generated by various external electronic warfare equipment and electromagnetic attack weapons can threaten the normal working or electromagnetic safety of other sensitive equipment in the equipment. Therefore, for the development of electronic devices, the electromagnetic reliability of materials under various working conditions is more and more important.
At present, all electromagnetic safety related research tests and equipment are aimed at performance evaluation of finished products of electronic equipment, and mainly simulate various complex electromagnetic environments possibly faced by the electronic equipment in a service life, carry out electromagnetic sensitivity tests and environmental adaptability tests, test the overall reliability of the electronic equipment in the complex electromagnetic environment, and rarely test the practical service life of the equipment or materials specially in the complex electromagnetic environment and under different working conditions. To actively cope with this effect, it is necessary to construct an electromagnetic environment that is close to reality and satisfies the performance test requirements of equipment and materials. The construction of the electromagnetic environment refers to the construction of a target electromagnetic environment as truly as possible by comprehensively utilizing various technical means, the construction requirements of the electromagnetic environment can be specified through an experimental scheme, and the number of radiation sources with various parameters, working frequency ranges, working parameters and the like are generally specified. At present, the mainstream electromagnetic environment construction methods mainly include the following three methods: firstly, constructing a full object by utilizing real weapon equipment; secondly, a large amount of semi-physical construction depends on various signal simulators and distributed interactive simulation technology; and thirdly, constructing an all mathematical model by utilizing computer simulation and simulation technologies. The three electromagnetic environment construction methods have advantages and disadvantages respectively, and are suitable for different development stages of electronic equipment development.
With the advent of the age of 5G, higher demands have been made on electronic devices and materials. Under the condition of meeting the basic use performance requirements, whether the complex electromagnetic environment and the working condition can influence the service life of electronic equipment and materials used by the electronic equipment becomes a new focus of attention. The popularization of the application of the electronic equipment inevitably brings the problem that the service life of the electronic equipment is influenced by the use under different working condition environmental conditions, the simulation research of a single environmental influence factor cannot meet the requirements of actual production and research and development, and a multi-environmental factor coupling environment test device with complex electromagnetic environment simulation, particularly a thermal environment, a light environment and an electromagnetic environment, is lacked in the prior art. Therefore, it is urgently needed to develop a device for testing the reliability of materials and equipment with complex working conditions and complex electromagnetic environments.
Disclosure of Invention
The invention provides a multi-factor coupling reliability test device, aiming at overcoming the problem of lacking a reliability test means for a sample to be tested under various working conditions and a complex electromagnetic environment.
The technical scheme adopted by the invention is as follows: a multi-factor coupling reliability test device comprises a shielding bin, a multi-factor environment simulation system, a data acquisition system and a control system;
a sample rack is arranged in the shielding bin and used for fixing at least one sample to be detected, and an electromagnetic radiation shielding and wave absorbing layer and a heat insulating layer are arranged on the inner side of the shielding bin;
the multi-factor environment simulation system comprises an electromagnetic simulation component, a light irradiation component and a temperature control component;
the electromagnetic simulation component is used for transmitting an electromagnetic signal in the shielding bin so as to simulate an electromagnetic environment;
the light irradiation component is used for carrying out light irradiation on the sample to be detected through the light emitting unit in the shielding bin;
the temperature control assembly is used for heating or cooling the interior of the shielding bin;
the data acquisition system is used for acquiring data of electromagnetic parameters, temperature and illuminance in the shielding bin;
the control system is used for controlling the multi-factor environment simulation system to execute a reliability test on a sample to be tested on the sample rack according to a preset test program and data acquired by the data acquisition system.
Preferably, the electromagnetic simulation component comprises a signal simulator, a filter and a radiation array which are sequentially connected, the radiation array is arranged in the shielding bin, a plurality of horn antennas are arranged on the radiation array, and the transmitting ends of the horn antennas face the sample to be detected; wherein the signal simulator is used for generating signals for constructing a complex electromagnetic environment; the filter is used for filtering the influence of the non-target electromagnetic environment frequency band signal on the test.
Preferably, the data acquisition system further comprises a second electromagnetic radiation detector, and the second electromagnetic radiation detector is used for acquiring and recording electromagnetic environment data outside the shielding bin, and transmitting the electromagnetic environment data to the control system.
Preferably, the light-emitting unit is a xenon lamp tube, the xenon lamp tube is arranged on the inner side of the shielding bin, and the irradiation range of the xenon lamp tube faces to the sample to be detected.
Preferably, a cooling component is arranged on one side of the xenon lamp tube and used for cooling and radiating the xenon lamp tube.
Preferably, the data acquisition system comprises a light intensity tester, a blackboard thermometer, a first electromagnetic radiation detector and a temperature measurement sensor, wherein the light intensity tester, the blackboard thermometer, the first electromagnetic radiation detector and the temperature measurement sensor are all arranged on the sample rack.
Preferably, a transparent heat insulation layer and an electromagnetic shielding layer are arranged outside the light intensity tester and the blackboard thermometer;
an electromagnetic shielding layer and a shading layer are arranged outside the temperature measuring sensor;
and a shading and heat insulating layer is arranged outside the first electromagnetic radiation detector.
Preferably, the electromagnetic simulation assembly, the light irradiation assembly and the temperature control assembly operate independently of each other.
Preferably, one end of the sample rack is provided with a rotating motor, and the rotating motor is used for enabling the sample rack to rotate in the shielding bin.
The invention has the beneficial effects that:
through a multi-factor environment simulation system, a complex electromagnetic environment and different working conditions are simulated to perform reliability tests on a sample to be tested, a rapid, reliable and stable testing device is provided for the electromagnetic reliability of electronic equipment and materials, and the electromagnetic environment simulation technology is expanded to the field of material reliability testing characterization.
Preferably, the shielding bin increases the testing environment feasibility of temperature and electromagnetic performance testing through the shielding wave-absorbing layer and the heat-insulating layer, so that the electromagnetic reliability testing is more convenient and flexible; the accuracy of the test process and the test data is enhanced.
Preferably, the wide-band horn antenna array is applied to the electromagnetic simulation assembly, so that the frequency band of the electromagnetic simulation assembly is wider, and the power of the simulated electromagnetic environment is higher.
Preferably, a reliability test of multi-working-condition simulation is carried out in a single environment or any combination environment, so that the service life test of the material is more consistent with the actual use condition, and the test result has more reference and research values.
Drawings
The invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a multi-factor coupled reliability testing apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of the housing of one embodiment of the present invention.
In the figure: 1. a box body; 101. a box door; 102. a handle; 103. a pulley; 104. an electric control cabinet; 2. a shielding bin; 201. a sample holder; 202. a rotary motor; 203. an electromagnetic radiation shielding wave-absorbing layer; 204. a thermal insulation layer; 301. a radiating array; 302. a horn antenna; 303. a filter; 304. a signal simulator; 305. a second electromagnetic radiation detector; 401. a xenon lamp tube; 402. a water tank; 403. a condenser; 404. a filter; 405. a water inlet; 406. a water outlet; 407. a water pump; 501. a heating device; 502. a blower; 503. an air inlet; 504. an air outlet; 601. an electromagnetic controller; 602. an electromagnetic parameter display screen; 603. a light irradiation controller; 604. a light irradiation parameter display screen; 605. a temperature controller; 606. a temperature parameter display screen; 607. a control panel; 701. a first electromagnetic radiation detector; 702. a blackboard thermometer; 703. a light intensity tester; 704. and a temperature measuring sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, which are one embodiment of the present invention, the multi-factor coupling reliability testing apparatus of the present embodiment includes: the system comprises a shielding bin 2, a multi-factor environment simulation system, a data acquisition system and a control system;
the shielding bin 2 is internally provided with a sample frame 201, the sample frame 201 is used for fixing at least one sample to be detected, and the inner side of the shielding bin 2 is provided with an electromagnetic radiation shielding and wave absorbing layer 203 and a heat insulating layer 204.
The multi-factor environment simulation system comprises an electromagnetic simulation assembly, a light irradiation assembly and a temperature control assembly.
The electromagnetic simulation component is used for transmitting electromagnetic signals in the shielding bin 2 so as to simulate an electromagnetic environment;
the light irradiation component is used for carrying out light irradiation on the sample to be measured through the light emitting unit in the shielding bin 2;
the temperature control component is used for heating or cooling the interior of the shielding bin 2.
The electromagnetic simulation assembly is a system which takes an anechoic chamber reasonably provided with a certain space as a shielding bin 2, utilizes various signal simulators 304 to construct complex electromagnetic environment signals, flexibly sets electromagnetic signal environments required by tests by changing the parameters of the simulators, and radiates electromagnetic signals of targets, interferences, clutters and background environments to tested equipment through radiation devices arranged in the anechoic chamber.
Preferably, the electromagnetic simulation component comprises a signal simulator 304, a filter 303 and a radiation array 301 which are connected in sequence, the radiation array 301 is arranged inside the shielding bin 2, a plurality of horn antennas 302 are arranged on the radiation array 301, and the transmitting ends of the horn antennas 302 face the sample to be tested; wherein the signal simulator 304 is used for generating signals for constructing a complex electromagnetic environment; the filter 303 is configured to filter an influence of a non-target electromagnetic environment frequency band signal on a test.
The electromagnetic radiation shielding and wave absorbing layer 203 comprises a darkroom shielding project and a wave absorbing material project. The radiation array 301 of this embodiment is composed of four horn antennas 302, which are uniformly distributed on the left and right sides of the xenon lamp tube 401, the first electromagnetic radiation detector 701 is installed on the sample holder 201, the electric control cabinet 104 is disposed on the right side of the box body 1, and the second electromagnetic radiation detector 305, the signal simulator 304 and the filter 303 are disposed therein. The second electromagnetic radiation detector 305 is configured to collect and record electromagnetic environment data outside the shielding bin 2, and transmit the electromagnetic environment data to the control system.
Preferably, the light emitting unit is a xenon lamp tube 401, the xenon lamp tube 401 is arranged inside the shielding bin 2, and the irradiation range of the xenon lamp tube faces the sample to be detected. The xenon lamp tube 401 is covered with an optical filter along the light irradiation direction, and after the optical filter is filtered, the wavelength of light which can pass through the optical filter is 290-800 nm. The xenon lamp tube 401 of the present embodiment is installed at the axial position of the sample holder 201, the xenon lamp tube 401 is longitudinally arranged, and the sample holder 201 rotates around the xenon lamp tube 401.
Preferably, a cooling component is arranged on one side of the xenon lamp tube 401, and the cooling component is used for cooling and radiating the xenon lamp tube 401. The cooling assembly comprises a water pump 407, a water tank 402, a condenser 403 and a filter 404, the water pump 407, the condenser 403, the water tank 402 and the filter 404 are sequentially connected, the condenser 403 adopts a fin-tube heat exchanger, the water tank 402 is arranged at the lower part of the condenser 403, the water tank 402 is connected to the filter 404 through a pipeline, condensed water enters the cooling assembly of the xenon lamp tube 401 through a water inlet 405, and the condensed water sequentially flows back to the water tank 402 through a water outlet 406 and the water pump 407 and the condenser 403, so that recycling of the condensed water is realized.
The rear of the shielding bin 2 is provided with a pipeline interlayer, the upper part in the pipeline interlayer is provided with a water pump 407, the water pump 407 is fixedly connected to the inner rear wall of the box body 1, and the water pump 407 adopts a high and low temperature resistant stainless steel multi-wing impeller. A double-layer high-temperature-resistant high-tensile sealing strip is arranged between the box body 1 and the box door 101, and a glued sheet type conducting film is arranged on the inner side of the box door 101.
The temperature control assembly comprises a heating device 501, a blower 502, an air inlet 503 and an air outlet 504. The input of air-blower 502 is connected with heating device 501, and air-blower 502's output and air intake 503 are connected, and heating device 501 of this embodiment is the high-speed electric heater that heats of far infrared nichrome, heating device 501 passes through the stainless steel fastener and installs in box 1 below. An air outlet 504 is arranged at the rear end of the box body 1, and both the air inlet 503 and the air outlet 504 are communicated with the interior of the shielding bin 2.
The data acquisition system is used for acquiring data of electromagnetic parameters, temperature and illuminance in the shielding bin 2; the data acquisition system comprises a light intensity tester 703, a blackboard thermometer 702, a first electromagnetic radiation detector 701 and a temperature sensor 704, wherein the light intensity tester 703, the blackboard thermometer 702, the first electromagnetic radiation detector 701 and the temperature sensor 704 are all arranged on the sample holder 201.
The control system is used for controlling the multi-factor environment simulation system to execute a reliability test on the sample to be tested on the sample frame 201 according to a preset test program and the data acquired by the data acquisition system.
The sample to be tested in the embodiment can be a product, equipment or a component, and can also be a standard sample made of a single material.
Preferably, a transparent heat insulation layer and an electromagnetic shielding layer are arranged outside the light intensity tester 703 and the blackboard thermometer 702;
an electromagnetic shielding layer and a shading layer are arranged outside the temperature sensor 704;
a light-shielding and heat-insulating layer is arranged outside the first electromagnetic radiation detector 701.
Preferably, the electromagnetic simulation assembly, the light irradiation assembly and the temperature control assembly operate independently of each other. The electromagnetic simulation assembly, the light irradiation assembly and the temperature control assembly can be operated independently in the test setting process, and can also be used in any combination, so that various different working conditions and electromagnetic environments can be simulated conveniently.
Preferably, one end of the sample holder 201 is provided with a rotating motor 202, and the rotating motor 202 is used for rotating the sample holder 201 in the shielding bin 2. The rotating motor 202 is installed at the lower part in the box body 1, the sample holder 201 rotates 360 degrees along with the rotation of the rotating motor 202, the sample holder 201 is a circular frame, and at least one station for fixing a sample is installed on the sample holder 201.
Preferably, a plurality of said stations are evenly distributed in the circumferential direction.
Preferably, the multi-factor coupling reliability test device further comprises a box body 1, and the shielding bin 2, the multi-factor environment simulation system, the data acquisition system and the control system are all arranged in the box body 1.
The box body 1 is provided with a box door 101, the box door 101 is provided with a handle 102, a pulley 103 is arranged below the box body 1, and the pulley 103 is used for carrying and moving the box body 1.
The electric cabinet 104 is arranged in the box body 1, a control panel 607 is arranged on one side of the box door 101, the control panel 607 comprises an electromagnetic controller 601, a light irradiation controller 603 and a temperature controller 605, the electromagnetic controller 601 is provided with an electromagnetic parameter display screen 602, the light irradiation controller 603 is provided with a light irradiation parameter display screen 604, and the temperature controller 605 is provided with a temperature parameter display screen 606; the control panel 607 is used for setting and controlling various system parameters and displaying and controlling the test process.
The box 1 with be equipped with double-deck high temperature resistant high-tension sealing strip between the chamber door 101 for improve the heat preservation effect in shielding storehouse 2, chamber door 101 inboard is provided with plywood formula conductive film, is used for improving the isolated effect of electromagnetism in shielding storehouse 2, and prevents that static gathering is on chamber door 101.
The electromagnetic parameter display screen 602, the light irradiation parameter display screen 604 and the temperature parameter display screen 606 are used for displaying the working state and the test situation of the equipment, and when the display screen is a touch display screen, touch operation of a control system can be directly performed through a display.
Specifically, the reliability testing device for multi-factor coupling performs the reliability testing steps as follows:
s1, demonstrating and designing experiment parameters according to the working condition characteristics of the sample to be tested, wherein the experiment parameters comprise electromagnetic parameters, light irradiation parameters and temperature parameters, and can only comprise one of the parameters independently or any combination parameter;
s2, installing the sample to be detected on the sample rack 201, and closing the box door 101;
s3, the data acquisition system works to acquire environmental parameters inside and outside the shielding bin 2;
and S4, controlling the multi-factor environment simulation system to simulate the test environment according to the experiment parameters by the control system according to the environment parameters, and executing the reliability test on the sample to be tested on the sample frame 201.
The present invention will be further described with reference to the following examples.
In this embodiment, the wired end of the horn antenna 302 is preferably, but not limited to, connected to the output end of the first electromagnetic radiation detector 701 through a low-loss dedicated radio frequency cable with a shielding function, and a through hole for the radio frequency cable to pass through is formed in the shielding bin 2, and preferably, an electromagnetic shielding protection needs to be performed around the through hole to prevent external interference signals from entering the shielding bin 2.
The main experimental parameters of this example are as follows:
(1) dark room shielding effectiveness:
0.1GHz～8GHz：≥800dB；
8GHz～18GHz：≥70dB；
18GHz～40GHz：≥60dB；
(2) analog signal type:
communication signals, navigation signals, broadcast signals, radar signals, satellite signals, interference signals, clutter signals, multipath signals, and the like;
(3) the frequency bands of the four horn antennas 302 are respectively: 30 GHz-40 GHz, 40 GHz-50 GHz, 50 GHz-60 GHz, 60 GHz-80 GHz (5G millimeter wave band: 24.25-27.5GHz, 37-43.5GHz, 45.5-47GHz, 47.2-48.2GHz and 66-71GHz, millimeter wave radar band: 24GHz, 77GHz)
(4) Peak power: 1800 KW.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (9)
1. A multi-factor coupling reliability test device is characterized by comprising a shielding bin, a multi-factor environment simulation system, a data acquisition system and a control system;
a sample rack is arranged in the shielding bin and used for fixing at least one sample to be detected, and an electromagnetic radiation shielding and wave absorbing layer and a heat insulating layer are arranged on the inner side of the shielding bin;
the multi-factor environment simulation system comprises an electromagnetic simulation component, a light irradiation component and a temperature control component;
the electromagnetic simulation component is used for transmitting an electromagnetic signal in the shielding bin so as to simulate an electromagnetic environment;
the light irradiation component is used for carrying out light irradiation on the sample to be detected through the light emitting unit in the shielding bin;
the temperature control assembly is used for heating or cooling the interior of the shielding bin;
the data acquisition system is used for acquiring data of electromagnetic parameters, temperature and illuminance in the shielding bin;
the control system is used for controlling the multi-factor environment simulation system to execute a reliability test on a sample to be tested on the sample rack according to a preset test program and data acquired by the data acquisition system.
2. The multi-factor coupling reliability test device according to claim 1, wherein the electromagnetic simulation component comprises a signal simulator, a filter and a radiation array which are connected in sequence, the radiation array is arranged inside the shielding bin, a plurality of horn antennas are arranged on the radiation array, and transmitting ends of the horn antennas face the sample to be tested;
wherein the signal simulator is used for generating signals for constructing a complex electromagnetic environment;
the filter is used for filtering the influence of the non-target electromagnetic environment frequency band signal on the test.
3. The multifactor-coupled reliability testing device of claim 2, wherein the data acquisition system further comprises a second electromagnetic radiation detector for acquiring and recording electromagnetic environment data outside the shielded enclosure and transmitting the data to the control system.
4. The device according to claim 1, wherein the light emitting unit is a xenon lamp tube, the xenon lamp tube is disposed inside the shielding chamber, and the irradiation range of the xenon lamp tube faces the sample to be tested.
5. The device for testing the reliability of the multifactor coupling according to claim 4, wherein a cooling component is arranged on one side of the xenon lamp tube, and the cooling component is used for cooling and dissipating heat of the xenon lamp tube.
6. The multifactor-coupled reliability testing device according to claim 1, wherein the data acquisition system comprises a light intensity tester, a blackboard thermometer, a first electromagnetic radiation detector and a temperature sensor, and the light intensity tester, the blackboard thermometer, the first electromagnetic radiation detector and the temperature sensor are all arranged on the sample holder.
7. The multifactor-coupled reliability test apparatus of claim 6,
a transparent heat insulation layer and an electromagnetic shielding layer are arranged outside the light intensity tester and the blackboard thermometer;
an electromagnetic shielding layer and a shading layer are arranged outside the temperature measuring sensor;
and a shading and heat insulating layer is arranged outside the first electromagnetic radiation detector.
8. The multifactor-coupled reliability tester as claimed in claim 1 wherein the electromagnetic modeling module, the light irradiating module and the temperature control module operate independently of each other.
9. The multifactor-coupled reliability tester as claimed in claim 1 wherein the sample holder is provided with a rotary motor at one end, the rotary motor being adapted to rotate the sample holder within the shielded enclosure.
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| CN202111397426.1A CN114252388A (en) | 2021-11-23 | 2021-11-23 | Multi-factor coupling reliability test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117452103A (en) * | 2023-10-18 | 2024-01-26 | 广州市德珑电子器件有限公司 | EMI power supply filter reliability test system and method |
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| 北京空间科技信息研究所主编: "《航天航空航海国际工程科技战略高端论坛论文集》", vol. 1, 西安电子科技大学出版社, pages: 222 - 224 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117452103A (en) * | 2023-10-18 | 2024-01-26 | 广州市德珑电子器件有限公司 | EMI power supply filter reliability test system and method |
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