CN219641842U - Near-field radiation immunity testing device - Google Patents
Near-field radiation immunity testing device Download PDFInfo
- Publication number
- CN219641842U CN219641842U CN202320514306.3U CN202320514306U CN219641842U CN 219641842 U CN219641842 U CN 219641842U CN 202320514306 U CN202320514306 U CN 202320514306U CN 219641842 U CN219641842 U CN 219641842U
- Authority
- CN
- China
- Prior art keywords
- antenna
- horn antenna
- unit
- section
- tem horn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 57
- 230000005855 radiation Effects 0.000 title claims abstract description 24
- 230000036039 immunity Effects 0.000 title claims abstract description 22
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a short-distance radiation immunity testing device, which comprises a signal generating unit, a testing unit, a control unit and an anechoic chamber; the electric wave darkroom is internally provided with equipment to be tested; the signal generation unit is used for outputting interference signals in a directional way; the test unit is arranged in the anechoic chamber, and the test unit comprises: a TEM horn antenna covering 380MHz-6GHz frequency band, the TEM horn antenna being connected to the signal generation unit; a height adjustable antenna console, said TEM horn antenna being disposed on top of said antenna console; the fixed spacing device is used for adjusting the distance between the TEM horn antenna and the equipment to be tested, and is connected to the TEM horn antenna; the control unit is respectively connected with the signal generation unit and the test unit, and is used for detecting and debugging the signal intensity output by the signal generation unit. The system is capable of assessing close range radiation immunity based on the IEC61000-4-39 standard.
Description
Technical Field
The utility model relates to the technical field of electric power, in particular to a short-distance radiation immunity testing device.
Background
At present, electromagnetic use environments of products such as mobile phones, notebook computers, tablet computers, intelligent household appliances and the like are increasingly complex, use distances of different consumer products are increasingly short, and phenomena of mutual influence of the products are also increasingly common. Taking mobile phones as an example, mobile phones have been taken into people's daily life nowadays, and a common mobile phone integrates 2/3/4G wireless communication technology and bluetooth and Wi-Fi technology in 2.4GHz or 5.8GHz frequency bands. The portability of mobile phones results in a relatively close physical distance from other electronic products, and the resulting interference increases significantly.
In the existing test, as disclosed in 2019, 1 and 11, the radiation immunity antenna and the testing device only can test the radiation immunity of GB/T17626.3, GB/T4365-1995, GB/T17626.6-1998 and GB/T17218-1998 standards. There is no test method that can evaluate "short-range radiation immunity based on the IEC61000-4-39 standard". Therefore, there is a need to build a set of test systems for short-range radiation immunity problems based on the IEC61000-4-39 standard.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the short-distance radiation immunity testing device, and because daily electronic products are more easily influenced by a radiation radio frequency electric field in a 380MHz-6GHz frequency band, research and development are carried out on the frequency band, and the system can evaluate the short-distance radiation immunity based on the IEC61000-4-39 standard.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a near-field radiation immunity testing device comprises a signal generating unit, a testing unit, a control unit and an anechoic chamber; the electric wave darkroom is internally provided with equipment to be tested;
the signal generation unit is used for outputting interference signals in a directional way;
the test unit is arranged in the anechoic chamber, and the test unit is connected with the signal generation unit, and the test unit comprises: a TEM horn antenna covering 380MHz-6GHz frequency band, the TEM horn antenna being connected to the signal generation unit; a height adjustable antenna console, said TEM horn antenna being disposed on top of said antenna console; the fixed spacing device is used for adjusting the distance between the TEM horn antenna and the equipment to be tested, and is connected to the TEM horn antenna;
the fixed spacing device includes: the device comprises a body connected with a TEM horn antenna, wherein the body is provided with a preset width for adjusting the distance between the TEM horn antenna and equipment to be tested, one side of the body, which is away from the TEM horn antenna, is provided with a positioning panel, and one side of the positioning panel, which is towards the equipment to be tested, is divided into uniform grid shapes;
the control unit is respectively connected with the signal generation unit and the test unit, and is used for detecting and debugging the signal intensity output by the signal generation unit.
Further, the fixed spacer body is a square box body, the preset width is 10cm, the surface of the body facing the equipment to be detected is square with the side length of 30cm, and the surface is divided into square grids with the width of 5cm to form the positioning panel.
Further, the fixed spacer is made of polystyrene material.
Further, the antenna console comprises a base, wherein the four corners of the base are respectively provided with a universal wheel;
the main rod is vertically connected to the base and comprises at least two section rods, the section rods are provided with first ends and second ends, the section rods are hollow cylindrical and are sequentially telescopic in a sleeved mode, a section rod clamp is arranged at the first ends of the section rods, and the radius of the first ends of the section rods can be adjusted by the section rod clamp;
one end of the main rod, which is away from the base, is connected with an antenna clamp, and a 360-degree graduated scale is arranged on the antenna clamp.
Further, the main rod comprises two section rods, namely a first section rod and a second section rod; the radius of each of the two section bars increases from the first end toward the second end, and the radius of the first end of the first section bar is smaller than the radius of the second end of the second section bar.
Further, the signal generating unit includes: a signal generator for providing a stable unmodulated signal that can simulate AM, FM, PM modulation;
the power amplifier is connected with the signal generator and is used for amplifying signals;
and the directional coupler is connected with the power amplifier and is used for enabling the signals amplified by the power amplifier to be directionally output to the test unit.
Further, the control unit includes: the power meter is connected with the power amplifier through the directional coupler and is used for measuring the power value of each port of the power amplifier;
the field intensity probe and the field intensity meter are arranged in the electric wave darkroom and are used for measuring the electric field intensity of a test signal;
and the software control system is respectively connected with the signal generating unit, the power meter, the field intensity probe and the field intensity meter.
Further, the device under test is a mobile phone.
By the technical scheme, the utility model has the following beneficial effects:
1. according to the utility model, a TEM horn antenna with better near-distance field uniformity is selected, better field intensity coverage is provided in a certain area, and one antenna covers 380MHz-6GHz frequency band, so that the test efficiency is improved;
2. according to the utility model, the fixed spacing device made of polystyrene material is independently designed, so that the efficiency and stability of antenna positioning are improved, and the repeatability of a test result is facilitated;
3. the test of the utility model is carried out in an anechoic chamber, has better isolation effect and provides stable electromagnetic environment.
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall apparatus structure of a near field radiation immunity test apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the connection structure of the system components in an embodiment of the present utility model;
fig. 3 is a schematic diagram of an antenna console according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of a contracted antenna console according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a fixed spacer structure in accordance with an embodiment of the present utility model;
figure 6 is a diagram of a fixed spacer and TEM feedhorn connection in an embodiment of the present utility model.
Reference numerals of the above drawings: 1. an anechoic chamber; 2. a signal generator; 3. a power amplifier; 4. a directional coupler; 5. a power meter; 6. a TEM horn antenna; 7. a field intensity probe and a field intensity meter; 8. an antenna console; 81. a base; 82. a universal wheel; 83. a main rod; 831. a section bar; 832. a section bar clamp; 833. a connecting groove; 834. a reinforcing block; 835. an antenna clamp; 836. a 360-degree graduated scale; 9. a software control system; 10. a fixed spacing device; 101. a ring buckle; 20. a signal generation unit 30, a test unit; 40. a control unit; 50. and the device to be tested.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Examples: referring to fig. 1 to 6, a near-field radiation immunity testing apparatus is disclosed in this embodiment, and includes a signal generating unit 20, a testing unit 30, a control unit 40, and an anechoic chamber 1; the anechoic chamber 1 is internally provided with equipment 50 to be tested;
the signal generation unit 20 includes: a signal generator 2 for providing a stable unmodulated signal, which can simulate AM, FM, PM modulation; a power amplifier 3 connected to the signal generator for amplifying a signal; a directional coupler 4 for outputting the amplified signal of the power amplifier in a directional manner, reducing unnecessary reflected signals, and protecting the power amplifier 3 and the signal generator 2; the signal generating unit 20 may direct the output signal.
The test unit 30 is disposed in the anechoic chamber 1, and the test unit 30 is connected with the signal generating unit 20, and the test unit 30 includes: a TEM horn 6 for converting the signal from the signal generating unit 20 into a spatial electric field signal, the TEM horn 6 being connected to the directional coupler 4; an antenna console 8 for adjusting the position of the TEM horn antenna 6, and a fixed spacing device 10 for adjusting the distance between the TEM horn antenna 6 and the device 50 to be measured.
Because daily electronic products are more easily influenced by a radiation radio frequency electric field in the 380MHz-6GHz frequency band, research and development are carried out on the frequency band, and the TEM horn antenna 6 meeting the IEC61000-4-39 standard is adopted.
The control unit 40 includes: the power meter 5 is connected with the power amplifier 3 through the directional coupler 4 and is used for measuring the power value of each port of the power amplifier 3 so as to avoid burning the amplifier 3 due to excessive reverse power; the field intensity probe and the field intensity meter 7 are arranged in the anechoic chamber 1, and the field intensity probe and the field intensity meter 7 are used for calibrating the electric field intensity of a test signal and ensuring the stability of a subsequently applied interference signal; and the software control system 9 is respectively connected with the signal generation unit 20, the power meter 5, the field intensity probe and the field intensity meter 7 and is used for detecting and debugging the signal intensity output by the signal generation unit 20.
In this embodiment, the antenna console 8 includes a square base 81 with a side length of 60cm, and each of four corners of the base 81 is provided with a universal wheel 82, so as to facilitate pushing the antenna console 8 to move in the anechoic chamber 1;
the main rod 83 is vertically connected to the base 81, the main rod 83 is composed of three hollow cylindrical section rods 831, the three section rods 831 are sequentially sleeved and the radius of each section rod 831 is sequentially increased from inside to outside, a section rod clamp 832 is arranged at the upper end of each section rod 831, the radius of the upper end of each section rod 831 can be adjusted by the section rod clamp 832, the sleeved section rods 831 are pulled out section by section to enable the inner section rods 831 and the outer section rods 831 to be connected end to end, the section rod clamp 832 is tightened, the main rod 83 can be stretched and fixed, and the length of the main rod 83 can be randomly adjusted according to practical requirements.
In another possible embodiment, a connecting groove 833 is welded at the center of the base 8, the connecting groove 833 is hollow for placing the main rod 83, and reinforcing blocks 834 are disposed around the connecting groove 833, which makes the structure of the antenna console 8 more stable.
The end of the main rod 83, which is away from the base 81, is provided with an antenna clamp 835 for clamping the TEM horn antenna 6, and the antenna clamp 835 is provided with a 360-degree graduated scale 836 for facilitating the angular rotation and position fixation of the TEM horn antenna 6.
As shown in fig. 6, the fixed spacing device 10 is connected with the TEM horn antenna 6, the fixed spacing device 10 is provided with a clamping groove and a ring buckle 101 which are matched with the TEM horn antenna 6, and the TEM horn antenna 6 is placed in the clamping groove and fixed through the ring buckle; the fixed spacing device 10 is made of polystyrene material with low dielectric constant less than or equal to 1, and has better low loss rate. The fixed spacing device 10 is 10cm thick, the front face of the fixed spacing device is square with the side length of 30cm, and the front face of the fixed spacing device is evenly divided into square grids with the width of 5 cm. The fixed thickness keeps the distance from the surface of the TEM horn antenna 6 to the surface of the equipment 50 to be tested consistent, and when the geospatial position is changed to perform repeated tests, the equipment 50 to be tested is only required to be placed at the same position on the fixed interval device 10, so that the positioning of the TEM horn antenna 6 relative to the surface of the equipment 50 to be tested can be controlled, and the repeatability of the test result is facilitated.
The device to be tested is a mobile phone.
The experimental procedure was as follows: after the equipment 50 to be tested and the TEM horn antenna 6 are fixed in position through the antenna console 8 and the fixed spacing device 10; the software control system 9 is used for controlling the signal generator 2 to generate an interference signal, the interference signal is amplified to the level to be tested through the power amplifier 3 and then directionally output to the TEM horn antenna 6 through the directional coupler 4, and meanwhile, the observation power meter 5 is used for avoiding burning out the amplifier 3 due to overhigh reverse power; the TEM horn antenna 6 converts the test signals into spatial electric field strength signals to affect the device under test 50; observing whether the device 50 to be tested has abnormal phenomena such as screen flashing, screen splash, dead halt and the like;
the test environment is changed to repeat the test, and the field intensity probe and the field intensity meter 7 are also required to be observed during the test to ensure the stable intensity of the interference signal.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (8)
1. The short-distance radiation immunity testing device is characterized by comprising a signal generating unit, a testing unit, a control unit and an anechoic chamber; the electric wave darkroom is internally provided with equipment to be tested;
the signal generation unit is used for outputting interference signals in a directional way;
the test unit is arranged in the anechoic chamber, and the test unit is connected with the signal generation unit, and the test unit comprises: a TEM horn antenna covering 380MHz-6GHz frequency band, the TEM horn antenna being connected to the signal generation unit; a height adjustable antenna console, said TEM horn antenna being disposed on top of said antenna console; the fixed spacing device is used for adjusting the distance between the TEM horn antenna and the equipment to be tested, and is connected to the TEM horn antenna;
the fixed spacing device includes: the device comprises a body connected with a TEM horn antenna, wherein the body is provided with a preset width for adjusting the distance between the TEM horn antenna and equipment to be tested, one side of the body, which is away from the TEM horn antenna, is provided with a positioning panel, and one side of the positioning panel, which is towards the equipment to be tested, is divided into uniform grid shapes;
the control unit is respectively connected with the signal generation unit and the test unit, and is used for detecting and debugging the signal intensity output by the signal generation unit.
2. The near field radiation immunity testing apparatus of claim 1, wherein said fixed spacer body is a square box body, said preset width is 10cm, a face of said body facing said device under test is a square with a side length of 30cm, and the face is divided into square grids with a width of 5cm to form said positioning panel.
3. The near field radiation immunity testing apparatus of claim 2, wherein said fixed spacer means is made of polystyrene material.
4. The near field radiation immunity testing apparatus of claim 1, wherein said antenna console comprises a base, said base having a universal wheel mounted on each of four corners thereof;
the main rod is vertically connected to the base and comprises at least two section rods, the section rods are provided with first ends and second ends, the section rods are hollow cylindrical and are sequentially telescopic in a sleeved mode, a section rod clamp is arranged at the first ends of the section rods, and the radius of the first ends of the section rods can be adjusted by the section rod clamp;
one end of the main rod, which is away from the base, is connected with an antenna clamp, and a 360-degree graduated scale is arranged on the antenna clamp.
5. The near field radiation immunity testing apparatus of claim 4, wherein said main pole comprises two of said section poles, a first section pole and a second section pole, respectively; the radius of each of the two section bars increases from the first end toward the second end, and the radius of the first end of the first section bar is smaller than the radius of the second end of the second section bar.
6. The near field radiation immunity testing apparatus of claim 1, wherein the signal generating unit comprises: a signal generator for providing a stable unmodulated signal that can simulate AM, FM, PM modulation;
the power amplifier is connected with the signal generator and is used for amplifying signals;
and the directional coupler is connected with the power amplifier and is used for enabling the signals amplified by the power amplifier to be directionally output to the test unit.
7. The near field radiation immunity testing apparatus of claim 6, wherein the control unit comprises: the power meter is connected with the power amplifier through the directional coupler and is used for measuring the power value of each port of the power amplifier;
the field intensity probe and the field intensity meter are arranged in the electric wave darkroom and are used for measuring the electric field intensity of a test signal;
and the software control system is respectively connected with the signal generating unit, the power meter, the field intensity probe and the field intensity meter.
8. The near field radiation immunity testing apparatus of claim 1, wherein the device under test is a mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514306.3U CN219641842U (en) | 2023-03-16 | 2023-03-16 | Near-field radiation immunity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514306.3U CN219641842U (en) | 2023-03-16 | 2023-03-16 | Near-field radiation immunity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219641842U true CN219641842U (en) | 2023-09-05 |
Family
ID=87815753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320514306.3U Active CN219641842U (en) | 2023-03-16 | 2023-03-16 | Near-field radiation immunity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219641842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117406008A (en) * | 2023-12-15 | 2024-01-16 | 深圳沃特检验集团有限公司 | Radio frequency conduction immunity test method, device, equipment and storage medium |
-
2023
- 2023-03-16 CN CN202320514306.3U patent/CN219641842U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117406008A (en) * | 2023-12-15 | 2024-01-16 | 深圳沃特检验集团有限公司 | Radio frequency conduction immunity test method, device, equipment and storage medium |
| CN117406008B (en) * | 2023-12-15 | 2024-04-12 | 深圳沃特检验集团股份有限公司 | Radio frequency conduction immunity test method, device, equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219641842U (en) | Near-field radiation immunity testing device | |
| CN103616575B (en) | A kind of radiation emission test method | |
| CN106850086B (en) | Electromagnetic wave chamber based on array antenna | |
| CN110907775A (en) | UHF-based partial discharge interference signal testing method | |
| US11054454B2 (en) | Wireless passive field strength probe | |
| CN101435846A (en) | Portable high voltage electric shock-proof detection alarming device | |
| CN202562629U (en) | High voltage power transmission line strain drainage wire clamp temperature testing system | |
| CN201522530U (en) | Multi-functional electromagnetic signal detector | |
| Shalaby et al. | Electromagnetic field measurement instruments: survey | |
| CN107462777A (en) | A kind of system and method for being used to carry out multichannel power frequency electric field measurement under high humidity conditions | |
| CN207895003U (en) | A kind of MEMS electric-field sensors and its wireless energy supply system | |
| CN218896811U (en) | Antenna device and test system | |
| CN205506954U (en) | 5m method anechoic chamber | |
| CN112798874B (en) | Electric field radiation sensitivity improvement test method and system | |
| CN212693111U (en) | Wireless temperature measurement system | |
| CN110132409B (en) | High-power microwave power density/field intensity monitoring device | |
| CN109633656B (en) | Non-contact overhead cable height measuring rod | |
| CN210155229U (en) | Resistive current tester for lightning arrester | |
| CN207424114U (en) | A kind of system for progress multichannel power frequency electric field measurement under high humidity conditions | |
| Nicolas et al. | Specific absorption rate assessments based on a selective isotropic measuring system for electromagnetic fields | |
| CN115037389B (en) | Multi-antenna radiation stray test system | |
| CN111541497A (en) | Air interface testing device for wireless communication performance of Internet of things terminal | |
| CN210719448U (en) | Portable temperature tester | |
| CN210803593U (en) | Wireless passive field intensity probe | |
| CN211148702U (en) | Power frequency field intensity detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |