CN218767121U

CN218767121U - Radiation source testing device and system

Info

Publication number: CN218767121U
Application number: CN202221914542.6U
Authority: CN
Inventors: 陈建刚
Original assignee: Shenzhen Baoxinchuang Technology Co Ltd
Current assignee: Shenzhen Baoxinchuang Information Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-03-28
Anticipated expiration: 2032-07-20

Abstract

The utility model relates to an electromagnetic field measurement technical field, concretely relates to radiation source testing arrangement and system, the device includes the revolving stage, the probe, antenna and receiver, the revolving stage is used for placing the equipment under test, the one end that the equipment under test was kept away from to the probe is unsettled, the probe can enlarge and launch the electromagnetic wave of the detection position of equipment under test, the electromagnetic wave can be received to the antenna, the receiver passes through signal transmission line and antenna connection, the receiver can detect the electromagnetic wave that the antenna was received, and show the parameter of electromagnetic wave, with confirm the abnormal position of radiation according to the parameter that the equipment under test appears. Through the structure, in the process of carrying out radiation leakage test on the tested equipment, if the radiation abnormality exists in the far field test result, the specific part of the abnormal radiation can be accurately positioned under the condition of not changing the test environment, the detection and environment switching of the near field test environment and the far field test are avoided, the manpower and the time can be saved, and the rectification efficiency of research and development personnel is accelerated.

Description

Radiation source testing device and system

Technical Field

The utility model relates to an electromagnetic field measures technical field, concretely relates to radiation source testing arrangement and system.

Background

In the certification authority, radiation leakage tests are performed using various types of calibrated antennas, all of which are far-field tests. The standard far-field radiation leakage test can accurately and quantitatively tell us whether a tested object meets the corresponding EMI standard, but the far-field test cannot tell engineers about a specific radiation source of a serious radiation problem, for example, whether the tested object comes from a gap of a shell or a connected cable, or a communication interface such as a USB (universal serial bus) or a LAN (local area network), under the condition, the tested device can only be transferred to a near-field test environment, the real source of radiation is positioned by a near-field test method, then the tested device is debugged and then subjected to the far-field test to judge whether the tested device meets the requirement, if the tested device does not meet the requirement, the near-field test needs to be carried out again, and the steps are repeated until the tested device meets the requirement. The radiation problem is repeatedly discovered through the far field test, and then the near field test is carried out to locate the true source of the radiation, so that the process obviously wastes much labor and time, and the test result can be subjected to error due to frequent movement of the tested equipment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves of embodiment is that far field radiation leaks test environment can not the accurate positioning radiation source among the prior art.

In order to solve the above technical problem, the utility model discloses a technical scheme that embodiment adopted is: there is provided a radiation source testing device comprising:

the rotary table is used for accommodating tested equipment;

the probe is used for amplifying and emitting electromagnetic waves at a detection position of the tested equipment, wherein when the abnormal situation exists in the far-field detection of the tested equipment, the tested equipment comprises at least one detection position, the at least one detection position comprises a position of the tested equipment with radiation abnormal, and the detection position is an estimated abnormal position of the tested equipment;

the antenna is used for receiving the electromagnetic wave transmitted by the tested equipment and receiving the amplified electromagnetic wave transmitted by the probe;

the receiver is connected with the antenna through a signal transmission line and is used for detecting the electromagnetic waves received by the antenna and displaying parameters of the electromagnetic waves so as to determine the position of the tested equipment with radiation abnormality according to the parameters;

the rotary table, the probe and the antenna are all arranged in the detection chamber, and the receiver is arranged outside the detection chamber.

Optionally, the probe includes an electric field probe, one end of a probe of the electric field probe is used for contacting the detection position of the device under test, and the other end of the electric field probe is suspended.

Optionally, the probe includes a magnetic field probe, one end of a probe ring of the magnetic field probe is used to be close to the detection position of the device under test, and the other end of the magnetic field probe is suspended.

Optionally, the detection chamber is a semi-anechoic chamber.

Optionally, the distance between the antenna and the device under test is 3-10 meters.

Optionally, the turntable is a rotatable turntable, and the rotatable turntable is used for driving the device under test to rotate.

Optionally, the radiation source testing apparatus further includes an antenna tower, the antenna is disposed on the antenna tower, and the antenna tower is configured to control a height of the antenna, where the height of the antenna ranges from 1 meter to 4 meters.

Optionally, the antenna tower is connected to a first power supply, and the first power supply is used for supplying power to the antenna tower, so that the antenna tower controls the height of the antenna.

Optionally, the antenna includes at least one of a log periodic antenna and a horn antenna.

In order to solve the above technical problem, the utility model discloses another technical scheme that embodiment adopted is: the radiation source testing system comprises a tested device, a second power supply and the radiation source testing device, wherein the second power supply is electrically connected with the tested device, the radiation source testing device is arranged on the rotary table, and the second power supply is used for supplying power to the tested device.

Be different from the condition of correlation technique, the utility model provides a radiation source testing arrangement and system, including revolving stage, probe, antenna and receiver, the revolving stage is used for placing the equipment under test, the probe is kept away from the one end of equipment under test is unsettled, the probe can be enlargied and is launched the electromagnetic wave of the detection position of equipment under test, the electromagnetic wave can be received to the antenna, the receiver pass through signal transmission line with antenna connection, the receiver can detect the antenna is received the electromagnetic wave, and show the parameter of electromagnetic wave, with the basis the parameter is confirmed the unusual position of radiation appears in the equipment under test, the revolving stage the probe with the antenna all sets up in the detection chamber, the receiver set up in outside the detection chamber. Through the structure, in the process of carrying out radiation leakage test on the tested equipment, if the radiation abnormality exists in the far field test result, the specific part of the abnormal radiation can be accurately positioned under the condition of not changing the test environment, the detection and environment switching of the near field test environment and the far field test are avoided, the manpower and the time can be saved, and the rectification efficiency of research and development personnel is accelerated.

Drawings

Fig. 1 is a schematic diagram of a radiation source testing system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a radiation source testing apparatus according to an embodiment of the present invention;

FIG. 3 is an exemplary diagram of a detection chamber provided by an embodiment of the present invention;

fig. 4 is a schematic diagram of an electric field probe and a magnetic field probe according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", and the like as used herein refer to an orientation or positional relationship based on that shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiment of the utility model provides a radiation source test system, please refer to fig. 1, this system include equipment under test 21, with the second power 22 that equipment under test 21 electricity is connected to and radiation source testing arrangement 10, radiation source testing arrangement 10 includes revolving stage 11, equipment under test 21 place in on revolving stage 11, second power 22 is used for equipment under test 21 supplies power. The device under test 21 is usually an electric device, such as a mobile phone, a notebook computer, or other electronic devices, and the system is used for performing a radio disturbance (RE) test on the device under test 21, and in a normal far-field test environment, the electromagnetic wave emitted by the device under test 21 may be detected and analyzed by the radiation source testing apparatus 10, so as to determine whether the device under test 21 has a radiation abnormal condition.

Specifically, when the device under test 21 is powered on, radiation is generated and emitted, and the radiation source testing apparatus 10 may analyze parameters of the electromagnetic wave, such as frequency or field strength, and determine whether the device under test 21 meets the EMI standard (i.e., determine whether the radiation of the device under test exceeds a national standard) according to the parameters.

If the radiation of receiving equipment exceeds standard, then explain that this receiving equipment 21 has the position of radiation anomaly, under this condition, the embodiment of the utility model provides an among the radiation source test system, radiation source testing arrangement 10 can also be based on what position specifically is that the parameter judgement radiation anomaly appears, for example pin, the wiring of PCB board, power cord or signal cable etc. of a certain chip, device, need not additionally set up the environment of near field test, need not frequently remove the position of receiving equipment 21, further confirm that the unusual concrete position of radiation appears, avoided near field test environment and far field test's detection and environment to switch, can practice thrift manpower and time for research and development personnel's rectification efficiency.

An embodiment of the utility model provides a radiation source testing arrangement 10 please combine fig. 2, radiation source testing arrangement 10 includes revolving stage 11, probe 12, antenna 13 and receiver 14, wherein, revolving stage 11 probe 12 with antenna 13 all sets up in the detection chamber, receiver 14 set up in outside the detection chamber. Referring to fig. 3, the detection chamber may be a semi-anechoic chamber, such as the semi-anechoic chamber shown in fig. 3.

The turntable 11 can hold a device under test 21, and the probe 12 can amplify and emit electromagnetic waves at a detection position of the device under test 21, wherein when there is an abnormality in the far-field detection of the device under test 21, the device under test 21 includes at least one of the detection positions, the at least one of the detection positions includes a position where the device under test 21 has a radiation abnormality, and the detection position is an estimated abnormality position of the device under test 21.

In some embodiments, the turntable 11 is a rotatable turntable for rotating the device under test 21. Taking the laptop of the device under test in fig. 3 as an example, radiation abnormality occurs in the process of performing far-field detection on the laptop, and the radiation condition when the a surface of the laptop faces the antenna, the radiation condition when the B surface faces the antenna, the radiation condition when the left side face the antenna, and the radiation condition when the right side face the antenna are detected respectively. If the radiation abnormality corresponding to the B surface is detected, the radiation abnormality part of the notebook computer is judged to be at a certain position of the B surface, the part which is possibly abnormal on the B surface is estimated to be used as a detection position, and then the detection positions are further detected to determine the radiation abnormality part.

Specifically, the selection of the type of the probe can be determined according to the needs of the actual scene or the tools existing in the current environment. In some embodiments, please refer to fig. 4, the probe 12 may be an electric field probe 121, and when performing the detection, one end of a probe of the electric field probe 121 contacts the detection position of the device under test 21, and the other end of the electric field probe 121 is suspended. In some embodiments, such as the electric field probe shown in fig. 4, the electric field probe 121 may further include a blocking capacitor, which is usually a capacitor with a withstand voltage of about 1000V and a withstand voltage of about 1000 PF.

Optionally, the probe 12 may also be a magnetic field probe 122, and during detection, one end of a probe loop of the magnetic field probe 122 is close to the detection position of the device under test 21, and the other end of the magnetic field probe 122 is suspended. Referring to fig. 4, taking the most common annular magnetic field probe as an example, when a magnetic field propagation line is perpendicular to the probe ring surface during measurement, the measured waveform is the highest, so during measurement, the direction of the probe is usually rotated to measure the highest waveform, thereby avoiding missing important radiation abnormal parts. It should be understood that the electric field probe and the magnetic field probe mentioned in the above embodiments are only used as selection examples of the probes, and are not limited to use only the two probes, and multiple probes may be used in combination during the actual measurement process, for example, the magnetic field probe is used to locate the approximate radiation abnormal portion, and then the electric field probe is used to perform precise location to determine the radiation abnormal portion.

Under some circumstances, if there is not suitable standard probe in the current environment, also can peel off a small segment shielding layer of coaxial cable front end, expose the heart yearn, use as simple and easy electric field probe, perhaps can use the universal meter pen as simple electric field probe to use, in this scheme promptly, the acquisition and the use of probe are all very convenient. It can be understood that the floating end of the probe 12 needs to be arranged to be easily received by the antenna 13, for example, to be oriented toward the antenna 13, so that the amplified electromagnetic wave can be better received by the antenna 13.

The antenna 13 can receive the electromagnetic wave transmitted by the device under test 21 and the amplified electromagnetic wave transmitted by the probe 12; the receiver 14 is connected to the antenna 13 through a signal transmission line, and the receiver 14 can detect the electromagnetic wave received by the antenna 13 and display parameters of the electromagnetic wave, so as to determine a radiation abnormal position of the device under test 21 according to the parameters. Wherein the signal transmission line is typically a coaxial line.

Optionally, the antenna 13 includes at least one of a log periodic antenna and a horn antenna. In a far-field test, a 30M-6G range of radiated electromagnetic waves are generally measured, and frequencies of electromagnetic waves suitable for being received by different types of antennas are different, for example, in an actual scene, a log periodic antenna is generally used for receiving low-frequency radiation, such as 30M-1G radiated electromagnetic waves, and a horn antenna is used for receiving high-frequency radiation, such as 1G-6G radiated electromagnetic waves. It should be understood that the log periodic antenna and the horn antenna mentioned in the above embodiments are only examples of antenna selection, and are not limited to use only the above two antennas, and other suitable antenna types may be selected in the actual measurement process, and multiple antennas may be used in combination.

Further, in some embodiments, the radiation source testing apparatus 10 further includes an antenna tower 131, the antenna 13 is disposed on the antenna tower 131, the antenna tower 131 is connected with a first power source 132, the first power source 132 supplies power to the antenna tower 131, so that the antenna tower 131 controls the height of the antenna 13, wherein the height of the antenna 13 is in a range of 1-4 meters. Usually, the antenna 13 needs to measure the radiation condition of the device under test 21 at heights of 1 m, 2 m, 3 m and 4 m, and the antenna tower 131 can conveniently adjust the height of the antenna 13 to complete the measurement task of the corresponding height.

The distance between the antenna 13 and the tested device 21 is 3-10 meters. The far field testing process will typically require the measurement of radiation at distances of 3 and 10 meters from the device under test, and the measurement requirements can typically be met by changing the position of the antenna tower.

The embodiment of the utility model provides a radiation source testing arrangement, including revolving stage, probe, antenna and receiver, the revolving stage is used for placing the equipment under test, the probe is kept away from the one end of equipment under test is unsettled, the probe can be enlarged and is launched the electromagnetic wave of the detection position of equipment under test, the electromagnetic wave can be received to the antenna, the receiver pass through signal transmission line with antenna connection, the receiver can detect the antenna is received the electromagnetic wave, and show the parameter of electromagnetic wave, with the basis the parameter is confirmed the unusual position of radiation appears in equipment under test, the stand the probe with the antenna all sets up in the measuring chamber, the receiver set up in outside the measuring chamber. Through the structure, in the process of carrying out radiation leakage test on the tested equipment, if the radiation abnormality exists in the far field test result, the specific part of the abnormal radiation can be accurately positioned under the condition of not changing the test environment, the detection and environment switching of the near field test environment and the far field test are avoided, the manpower and the time can be saved, and the rectification efficiency of research and development personnel is accelerated.

It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. A radiation source testing device, comprising:

a turntable (11), the turntable (11) being used for accommodating a device under test (21);

the probe (12) is used for amplifying and emitting electromagnetic waves at the detection position of the tested device (21), wherein when the remote field detection of the tested device (21) is abnormal, the tested device (21) comprises at least one detection position, the at least one detection position comprises a position where the tested device (21) has radiation abnormality, and the detection position is an estimated abnormal position of the tested device (21);

an antenna (13), wherein the antenna (13) is used for receiving the electromagnetic wave transmitted by the tested device (21) and receiving the amplified electromagnetic wave transmitted by the probe (12);

the receiver (14), the receiver (14) is connected with the antenna (13) through a signal transmission line, and the receiver (14) is used for detecting the electromagnetic waves received by the antenna (13) and displaying parameters of the electromagnetic waves so as to determine the position of the tested device (21) with abnormal radiation according to the parameters;

the rotary table (11), the probe (12) and the antenna (13) are arranged in a detection chamber, and the receiver (14) is arranged outside the detection chamber.

2. The radiation source testing device according to claim 1, characterized in that the probe head (12) comprises an electric field probe head (121), one end of a probe of the electric field probe head (121) is used for contacting the detection position of the device under test (21), and the other end of the electric field probe head (121) is suspended.

3. The radiation source testing device according to claim 1, characterized in that the probe head (12) comprises a magnetic field probe head (122), one end of a probe loop of the magnetic field probe head (122) is used for approaching the detection position of the device under test (21), and the other end of the magnetic field probe head (122) is suspended.

4. The radiation source testing device of claim 1, wherein the detection chamber is a semi-anechoic chamber.

5. The radiation source testing device according to claim 1, characterized in that the distance of the antenna (13) from the device under test (21) is 3-10 meters.

6. The radiation source testing device according to claim 1, characterized in that the turntable (11) is a rotatable turntable for bringing the device under test (21) into rotation.

7. The radiation source testing device according to claim 1, further comprising an antenna tower (131), said antenna (13) being arranged on said antenna tower (131), said antenna tower (131) being adapted to control the height of said antenna (13), wherein the height of said antenna (13) is in the range of 1-4 meters.

8. The radiation source testing device according to claim 7, characterized in that a first power supply (132) is connected to the antenna tower (131), said first power supply (132) being adapted to power the antenna tower (131) such that the antenna tower (131) controls the height of the antenna (13).

9. The radiation source testing device according to claim 1, characterized in that the antenna (13) comprises at least one of a log periodic antenna and a horn antenna.

10. A radiation source testing system, characterized by comprising a device under test (21), a second power supply (22) electrically connected to said device under test (21), and a radiation source testing apparatus according to any of claims 1-9, said device under test (21) being placed on said turntable (11), said second power supply (22) being adapted to power said device under test (21).