CN114125126A - Intermodulation interference positioning method and device and storage medium - Google Patents
Intermodulation interference positioning method and device and storage medium Download PDFInfo
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- CN114125126A CN114125126A CN202111476144.0A CN202111476144A CN114125126A CN 114125126 A CN114125126 A CN 114125126A CN 202111476144 A CN202111476144 A CN 202111476144A CN 114125126 A CN114125126 A CN 114125126A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 58
- 238000001228 spectrum Methods 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 56
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 6
- 238000004590 computer program Methods 0.000 claims description 12
- 230000004807 localization Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 14
- 230000015654 memory Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 5
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
Abstract
The embodiment of the application discloses a method and a device for positioning intermodulation interference and a storage medium, wherein the device for positioning the intermodulation interference comprises: the device comprises a radio frequency signal source, a spectrum analyzer, a scanning probe, a duplexer and a display screen to be tested; the radio frequency signal source is used for providing radio frequency signals in a test frequency band with the maximum transmitting power corresponding to the test frequency band; the display screen to be tested is in a bright screen state, and the display brightness is the maximum brightness; the duplexer is respectively connected with the radio frequency signal source, the spectrum analyzer and the scanning probe and is used for inhibiting the radio frequency signal from entering the spectrum analyzer; the scanning probe is used for transmitting radio frequency signals, simultaneously scanning each device in the display screen to be tested and receiving noise signals of each device in a receiving frequency band corresponding to the testing frequency band; the spectrum analyzer is used for displaying the amplitude of the noise signal received by the scanning probe; and in the display screen to be tested, the device with the highest noise signal amplitude in the receiving frequency band is a device generating intermodulation interference.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a method and a device for positioning intermodulation interference and a storage medium.
Background
Cross modulation refers to that a modulated interference (such as an interfering station) acts on a receiver simultaneously with a signal to be received, and due to the nonlinear action of a high-level amplifier or a frequency converter, the interfering modulated signal is transferred to a signal carrier to form cross modulation, so that the interference caused by the cross modulation is called cross modulation interference. The system intermodulation includes antenna intermodulation, receiver filter intermodulation, etc., and the intermodulation caused by the nonlinearity of passive devices such as antenna, feeder, etc. is usually called passive intermodulation.
At present, when a mobile phone is in a maximum transmission state in a certain frequency band, intermodulation interference is easily generated between the mobile phone and an unknown nonlinear device of a display screen, and the mobile phone is received by an antenna to influence the performance of the antenna.
Disclosure of Invention
The embodiment of the application provides an intermodulation interference positioning method, an apparatus and a storage medium, which can quickly and accurately position a device generating intermodulation interference in a display screen, thereby supporting solving the noise problem from the source and improving the antenna performance.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides an intermodulation interference positioner, includes: the device comprises a radio frequency signal source, a spectrum analyzer, a scanning probe, a duplexer and a display screen to be tested;
the radio frequency signal source is used for providing radio frequency signals in a test frequency band with the maximum transmitting power corresponding to the test frequency band;
the display screen to be tested is in a bright screen state, and the display brightness is the maximum brightness;
the duplexer is respectively connected with the radio frequency signal source, the spectrum analyzer and the scanning probe and is used for inhibiting the radio frequency signal from entering the spectrum analyzer;
the scanning probe is used for transmitting the radio frequency signal, scanning each device in the display screen to be tested simultaneously, and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band;
the spectrum analyzer is used for displaying the amplitude of the noise signal received by the scanning probe; and in the display screen to be tested, the device with the highest amplitude of the noise signal in the receiving frequency band is a device for generating intermodulation interference.
In the intermodulation interference positioning device, the duplexer comprises a transmitting end, a receiving end and a public end;
the sending end is connected with the radio frequency signal source, the receiving end is connected with the spectrum analyzer, and the public end is connected with the scanning probe.
In the above intermodulation interference positioning apparatus, further comprising: a first radio frequency line, a second radio frequency line and a third radio frequency line;
one end of the first radio frequency line is connected with the radio frequency signal source, and the other end of the first radio frequency line is connected with the sending end;
one end of the second radio frequency wire is connected with the spectrum analyzer, and the other end of the second radio frequency wire is connected with the receiving end;
one end of the third radio frequency line is connected with the scanning probe, and the other end of the third radio frequency line is connected with the public end.
In the above intermodulation interference positioning apparatus, the scanning frequency of the spectrum analyzer is matched with the test frequency band and the reception frequency band.
In the above intermodulation interference positioning device, the display screen to be measured includes: flexible circuit board and integrated circuit board;
the scanning probe is specifically configured to scan each device disposed on the flexible circuit board and the integrated circuit board, and receive a noise signal of each device in the reception frequency band.
The embodiment of the application provides an intermodulation interference positioning method, which is applied to the intermodulation interference positioning device, and the method comprises the following steps:
providing a radio frequency signal in a test frequency band by a radio frequency signal source at a maximum transmitting power corresponding to the test frequency band;
transmitting the radio frequency signal through a scanning probe, simultaneously scanning each device in a display screen to be tested, and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band;
displaying the amplitude of the noise signal received by the scanning probe through a spectrum analyzer; and in the display screen to be tested, the device with the highest amplitude of the noise signal in the receiving frequency band is a device for generating intermodulation interference.
In the above intermodulation interference positioning method, before scanning each device in the display screen to be tested and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band, the method further includes:
and controlling the display screen to be tested to be in a bright screen state, wherein the display brightness is the maximum brightness.
In the above intermodulation interference positioning method, scanning each device in the display screen to be tested, and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band, includes:
and scanning each device arranged on the flexible circuit board and the integrated circuit board included in the display screen to be tested, and receiving the noise signal of each device in the receiving frequency band.
In the above intermodulation interference localization method, before displaying, by a spectrum analyzer, the amplitude of the noise signal received by the scanning probe, the method further includes:
and adjusting the scanning frequency of the spectrum analyzer to be matched with the test frequency band and the receiving frequency band.
The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed to implement the above intermodulation interference positioning method.
The embodiment of the application provides an intermodulation interference positioning method, an apparatus and a storage medium, wherein the intermodulation interference positioning apparatus comprises: the device comprises a radio frequency signal source, a spectrum analyzer, a scanning probe, a duplexer and a display screen to be tested; the radio frequency signal source is used for providing radio frequency signals in a test frequency band with the maximum transmitting power corresponding to the test frequency band; the display screen to be tested is in a bright screen state, and the display brightness is the maximum brightness; the duplexer is respectively connected with the radio frequency signal source, the spectrum analyzer and the scanning probe and is used for inhibiting the radio frequency signal from entering the spectrum analyzer; the scanning probe is used for transmitting radio frequency signals, simultaneously scanning each device in the display screen to be tested and receiving noise signals of each device in a receiving frequency band corresponding to the testing frequency band; the spectrum analyzer is used for displaying the amplitude of the noise signal received by the scanning probe; and in the display screen to be tested, the device with the highest noise signal amplitude in the receiving frequency band is a device generating intermodulation interference. The intermodulation interference positioning device provided by the embodiment of the application can quickly and accurately position a device generating intermodulation interference in a display screen, thereby supporting solving the noise problem from the source and improving the antenna performance.
Drawings
Fig. 1 is a schematic structural diagram of an intermodulation interference positioning apparatus according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating device deployment in an exemplary display screen to be tested according to an embodiment of the present application;
fig. 3(a) is a second diagram illustrating the amplitude of an exemplary noise signal provided by the embodiment of the present application;
fig. 3(b) is a second diagram illustrating the amplitude of an exemplary noise signal provided by the embodiment of the present application;
fig. 3(c) is a third diagram illustrating the amplitude of an exemplary noise signal provided by the embodiment of the present application;
fig. 4 is a flowchart illustrating an intermodulation interference positioning method according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.
The embodiment of the application provides an intermodulation interference positioning device. Fig. 1 is a schematic structural diagram of an intermodulation interference positioning apparatus according to an embodiment of the present application. As shown in fig. 1, in an embodiment of the present application, an intermodulation interference positioning apparatus includes: the device comprises a radio frequency signal source 10, a spectrum analyzer 11, a scanning probe 12, a duplexer 13 and a display screen 14 to be tested;
a radio frequency signal source 10, configured to provide a radio frequency signal in a test frequency band with a maximum transmission power corresponding to the test frequency band;
the display screen 14 to be tested is in a bright screen state, and the display brightness is the maximum brightness;
the duplexer 13 is respectively connected with the radio frequency signal source 10, the spectrum analyzer 11 and the scanning probe 12 and is used for inhibiting the radio frequency signal from entering the spectrum analyzer 11;
the scanning probe 12 is used for transmitting radio frequency signals, scanning each device in the display screen 14 to be tested, and receiving noise signals of each device in a receiving frequency band corresponding to a testing frequency band;
a spectrum analyzer 11 for displaying the amplitude of the noise signal received by the scanning probe 12; in the display screen 14 to be tested, the device with the highest amplitude of the noise signal in the receiving frequency band is a device generating intermodulation interference.
It should be noted that, in the embodiment of the present application, as shown in fig. 2, the radio frequency signal source 10 may specifically be a mobile phone, and the display screen 14 to be tested may specifically be a display screen of the mobile phone.
It should be noted that, in the embodiment of the present application, in order to locate the intermodulation interference caused by a certain non-linear device on the display screen under the condition of high-power transmission of the mobile phone, one of the frequency bands of the LTE Band5/8/15/20 may be selected as a test frequency Band, and the transmission power of the test frequency Band is set to be the maximum to provide a radio frequency signal. Of course, in addition to the frequency bands, other frequency bands may be selected as the test frequency bands according to actual requirements and application scenarios, and the embodiment of the present application is not limited.
It should be noted that, in the embodiment of the present application, the display screen 14 to be tested needs to be in a brightness state, and the display brightness of the display screen is the maximum brightness.
It can be understood that the duplexer 13 is actually a different frequency duplex radio station, and its function is to isolate the transmitting and receiving signals, and ensure that the transmitting and receiving can work normally at the same time, in the embodiment of the present application, the duplexer 13 is connected to the rf signal source 10, the spectrum analyzer 11 and the scan probe 12, the rf signal in the high-power test frequency band provided by the rf signal source 10 will be transmitted through the scan probe 12, and the noise signal in the receiving frequency band received by the scan probe 12 will be displayed by the spectrum analyzer 11, and the duplexer 13 can suppress the rf signal from entering the spectrum analyzer 11, avoid saturation of the spectrum analyzer 11, and ensure the sensitivity and accuracy of positioning.
Specifically, in the embodiment of the present application, as shown in fig. 1, the duplexer 13 includes a transmitting end, a receiving end, and a common end;
the transmitting end is connected with a radio frequency signal source 10, the receiving end is connected with a spectrum analyzer 11, and the public end is connected with a scanning probe 12.
It is understood that, in the embodiment of the present application, the duplexer 13 specifically includes three ports, wherein the scanning probe 12 connected to the common terminal can receive and transmit the radio frequency signal provided by the radio frequency signal source 10 output from the transmitting terminal, and provide the received noise signal to the spectrum analyzer 11 through the receiving terminal.
Specifically, in an embodiment of the present application, the intermodulation interference positioning apparatus further includes: a first radio frequency line, a second radio frequency line and a third radio frequency line;
one end of the first radio frequency line is connected with the radio frequency signal source 10, and the other end of the first radio frequency line is connected with the sending end;
one end of the second radio frequency wire is connected with the spectrum analyzer 11, and the other end of the second radio frequency wire is connected with the receiving end;
and one end of the third radio frequency line is connected with the scanning probe 12, and the other end of the third radio frequency line is connected with the public end.
It will be appreciated that in the embodiment of the present application, the intermodulation interference locating apparatus further comprises three rf lines, wherein each rf line is used for communicating one of the rf signal source 10, the spectrum analyzer 11 and the scanning probe 12 with a specific port of the duplexer 13.
It can be understood that, in the embodiment of the present application, based on the above connection relationship, the scanning probe 12 transmits a radio frequency signal, and simultaneously scans each device in the display screen 14 to be tested, and receives a noise signal of each device in a receiving frequency band, so that the spectrum analyzer 11 can display the amplitude of the noise signal of each device in the display screen 14 to be tested, where the noise signal with the highest amplitude displayed on the spectrum analyzer 11 corresponds to the device in the display screen 14 to be tested, that is, the device generating intermodulation interference, that is, by observing the amplitudes of the noise signals of different devices, the positioning of the device generating intermodulation interference in the display screen 14 to be tested can be achieved.
It should be noted that, in the embodiment of the present application, the receiving frequency band and the testing frequency band are frequency bands having a corresponding relationship, and the scanning frequency of the spectrum analyzer 11 needs to be matched with the testing frequency band and the receiving frequency band.
Specifically, in the embodiment of the present application, the display screen to be tested 14 includes: flexible circuit board and integrated circuit board;
the scanning probe 12, specifically for scanning each device disposed on the flexible circuit board and the integrated circuit board, receives noise signals of each device within a reception frequency band.
It can be understood that, in the embodiment of the present application, the display screen 14 to be tested includes a flexible circuit board and an integrated circuit board, on which various non-linear devices are disposed, and if there is crosstalk, the non-linear devices usually originate from a certain device disposed on the circuit board, therefore, the scanning probe 12 may specifically scan for each device disposed on the flexible circuit board and the integrated circuit board, so as to receive a noise signal of each device in a reception frequency band, and accordingly, the amplitude of the noise signal of a certain device is the highest, and the device is the device that generates crosstalk.
Fig. 2 is a schematic diagram illustrating device deployment in an exemplary display screen to be tested according to an embodiment of the present application. Fig. 3(a) to 3(c) are amplitude diagrams of three exemplary noise signals provided by the embodiment of the present application. As shown in fig. 3(a), the spectrum analyzer 11 may display the amplitude of the noise signal of the device 1 in the display screen 14 to be tested, i.e., the amplitude 1, as shown in fig. 3(b), the spectrum analyzer 11 may display the amplitude of the noise signal of the device 2 in the display screen 14 to be tested, i.e., the amplitude 2, as shown in fig. 3(c), and the spectrum analyzer 11 may display the amplitude of the noise signal of the device 3 in the display screen 14 to be tested, i.e., the amplitude 3, wherein the amplitude 2 is the highest, i.e., the device 2 is a device generating intermodulation interference.
Illustratively, in the embodiment of the present application, a mobile phone is used as the radio frequency signal source 10 to transmit the WCDMA B823 dbm uplink signal, which is transmitted through the scanning probe 12, the scanning probe 12 is close to the flexible circuit board and the integrated circuit board of the display screen 14 to be tested, if modulation occurs, the noise signal is received through the scanning probe 12, and thus the amplitude thereof is displayed through the spectrum analyzer 11.
It should be noted that, in the embodiment of the present application, a source of intermodulation interference noise generated by a certain nonlinear device of the display screen 14 to be tested and a radio frequency high-power transmission signal may be located, so that the noise problem may be solved from the source, thereby preventing the interference noise from affecting the performance of the antenna.
The embodiment of the application provides an intermodulation interference positioner, includes: the device comprises a radio frequency signal source, a spectrum analyzer, a scanning probe, a duplexer and a display screen to be tested; the radio frequency signal source is used for providing radio frequency signals in a test frequency band with the maximum transmitting power corresponding to the test frequency band; the display screen to be tested is in a bright screen state, and the display brightness is the maximum brightness; the duplexer is respectively connected with the radio frequency signal source, the spectrum analyzer and the scanning probe and is used for inhibiting the radio frequency signal from entering the spectrum analyzer; the scanning probe is used for transmitting radio frequency signals, simultaneously scanning each device in the display screen to be tested and receiving noise signals of each device in a receiving frequency band corresponding to the testing frequency band; the spectrum analyzer is used for displaying the amplitude of the noise signal received by the scanning probe; and in the display screen to be tested, the device with the highest noise signal amplitude in the receiving frequency band is a device generating intermodulation interference. The intermodulation interference positioning device provided by the embodiment of the application can quickly and accurately position a device generating intermodulation interference in a display screen, thereby supporting solving the noise problem from the source and improving the antenna performance.
The embodiment of the present application provides an intermodulation interference positioning method, which is applied to the intermodulation interference positioning apparatus shown in fig. 1. Fig. 4 is a flowchart illustrating an intermodulation interference positioning method according to an embodiment of the present application. As shown in fig. 4, in the embodiment of the present application, the method for positioning intermodulation interference mainly includes the following steps:
s401, providing the radio frequency signal in the test frequency band by the radio frequency signal source according to the maximum transmitting power corresponding to the test frequency band.
In the embodiment of the present application, referring to the intermodulation interference positioning apparatus shown in fig. 1, the intermodulation interference positioning apparatus provides the radio frequency signal in the test frequency band with the maximum transmission power corresponding to the test frequency band through the radio frequency signal source 10.
It should be noted that, in the embodiment of the present application, the test frequency band may be specifically selected according to actual requirements and application scenarios, and the embodiment of the present application is not limited.
It is understood that in the embodiments of the present application, in order to locate the intermodulation interference caused by some non-linear device of the display screen under the condition of high-power transmission, it is necessary to set the transmission power of the test frequency band to be maximum to provide the radio frequency signal.
S402, transmitting radio frequency signals through the scanning probe, simultaneously scanning each device in the display screen to be tested, and receiving noise signals of each device in a receiving frequency band corresponding to the testing frequency band.
In the embodiment of the present application, referring to the intermodulation interference positioning apparatus shown in fig. 1, when the intermodulation interference positioning apparatus provides the radio frequency signal in the test frequency band with the maximum transmission power corresponding to the test frequency band through the radio frequency signal source 10, the intermodulation interference positioning apparatus can transmit the radio frequency signal through the scanning probe 12, and simultaneously scan each device in the display screen 14 to be tested, and receive the noise signal of each device in the receiving frequency band corresponding to the test frequency band.
It should be noted that, in the embodiment of the present application, before the intermodulation interference positioning apparatus scans each device in the display screen 14 to be tested and receives the noise signal of each device in the receiving frequency band corresponding to the testing frequency band, the following steps need to be further performed: and controlling the display screen 14 to be tested to be in a bright screen state, and the display brightness is the maximum brightness, so that the intermodulation interference positioning is supported.
Specifically, in the embodiment of the present application, the intermodulation interference positioning apparatus scans each device in the display screen 14 to be tested through the scanning probe 12, and receives a noise signal of each device in a receiving frequency band corresponding to the testing frequency band, including: each device disposed on the flexible circuit board and the integrated circuit board included in the display screen 14 to be tested is scanned, and a noise signal of each device in a receiving frequency band is received.
It should be noted that, in the embodiment of the present application, the display screen 14 to be tested includes a flexible circuit board and an integrated circuit board, and the devices disposed on the flexible circuit board and the integrated circuit board may be devices having intermodulation interference, so that the intermodulation interference apparatus may specifically scan each device disposed on the flexible circuit board and the integrated circuit board through the scanning probe 12, so as to obtain a corresponding noise signal, so as to determine the device generating intermodulation interference subsequently.
S403, displaying the amplitude of the noise signal received by the scanning probe through a spectrum analyzer; and in the display screen to be tested, the device with the highest noise signal amplitude in the receiving frequency band is a device generating intermodulation interference.
In the embodiment of the present application, referring to the intermodulation interference positioning apparatus shown in fig. 1, when the intermodulation interference positioning apparatus transmits a radio frequency signal through the scanning probe 12, and simultaneously scans each device in the display screen 14 to be tested, and receives a noise signal of each device in a receiving frequency band corresponding to the testing frequency band, the amplitude of the noise signal received by the scanning probe 12 can be displayed through the spectrum analyzer 11.
It should be noted that, in the embodiment of the present application, the intermodulation interference positioning apparatus needs to adjust the scanning frequency of the spectrum analyzer 11 to match the test frequency band and the receiving frequency band in advance, so as to support the scanning display of the corresponding frequency band.
It can be understood that, in the embodiment of the present application, the noise signal with the highest amplitude displayed on the spectrum analyzer 11 corresponds to the device in the display screen 14 to be tested, that is, the device generating the intermodulation interference, that is, the positioning of the device generating the intermodulation interference in the display screen 14 to be tested can be realized by observing the amplitudes of the noise signals of different devices.
The embodiment of the application provides an intermodulation interference positioning method, which is applied to the intermodulation interference positioning device, and the method comprises the following steps: providing radio frequency signals in a test frequency band by a radio frequency signal source at the maximum transmitting power corresponding to the test frequency band; transmitting a radio frequency signal through a scanning probe, simultaneously scanning each device in a display screen to be tested, and receiving a noise signal of each device in a receiving frequency band corresponding to a testing frequency band; displaying the amplitude of the noise signal received by the scanning probe through a spectrum analyzer; and in the display screen to be tested, the device with the highest noise signal amplitude in the receiving frequency band is a device generating intermodulation interference. The method for positioning the intermodulation interference can quickly and accurately position a device generating the intermodulation interference in the display screen, so that the problem of noise is solved from the source, and the performance of the antenna is improved.
The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the method for positioning intermodulation interference is implemented. The computer-readable storage medium may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (Hard Disk Drive, HDD) or a Solid-State Drive (SSD); or may be a separate device including one or any combination of the above memories, such as a mobile phone, computer, tablet device, personal digital assistant
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks in the flowchart and/or block diagram block or blocks.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An intermodulation interference positioning apparatus, comprising: the device comprises a radio frequency signal source, a spectrum analyzer, a scanning probe, a duplexer and a display screen to be tested;
the radio frequency signal source is used for providing radio frequency signals in a test frequency band with the maximum transmitting power corresponding to the test frequency band;
the display screen to be tested is in a bright screen state, and the display brightness is the maximum brightness;
the duplexer is respectively connected with the radio frequency signal source, the spectrum analyzer and the scanning probe and is used for inhibiting the radio frequency signal from entering the spectrum analyzer;
the scanning probe is used for transmitting the radio frequency signal, scanning each device in the display screen to be tested simultaneously, and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band;
the spectrum analyzer is used for displaying the amplitude of the noise signal received by the scanning probe; and in the display screen to be tested, the device with the highest amplitude of the noise signal in the receiving frequency band is a device for generating intermodulation interference.
2. The apparatus of claim 1,
the duplexer comprises a sending end, a receiving end and a public end;
the sending end is connected with the radio frequency signal source, the receiving end is connected with the spectrum analyzer, and the public end is connected with the scanning probe.
3. The apparatus of claim 2, further comprising: a first radio frequency line, a second radio frequency line and a third radio frequency line;
one end of the first radio frequency line is connected with the radio frequency signal source, and the other end of the first radio frequency line is connected with the sending end;
one end of the second radio frequency wire is connected with the spectrum analyzer, and the other end of the second radio frequency wire is connected with the receiving end;
one end of the third radio frequency line is connected with the scanning probe, and the other end of the third radio frequency line is connected with the public end.
4. The apparatus of claim 1,
and the scanning frequency of the spectrum analyzer is matched with the test frequency band and the receiving frequency band.
5. The apparatus of claim 1,
the display screen that awaits measuring includes: flexible circuit board and integrated circuit board;
the scanning probe is specifically configured to scan each device disposed on the flexible circuit board and the integrated circuit board, and receive a noise signal of each device in the reception frequency band.
6. An intermodulation interference positioning method applied to the intermodulation interference positioning apparatus according to any one of claims 1-5, the method comprising:
providing a radio frequency signal in a test frequency band by a radio frequency signal source at a maximum transmitting power corresponding to the test frequency band;
transmitting the radio frequency signal through a scanning probe, simultaneously scanning each device in a display screen to be tested, and receiving a noise signal of each device in a receiving frequency band corresponding to the testing frequency band;
displaying the amplitude of the noise signal received by the scanning probe through a spectrum analyzer; and in the display screen to be tested, the device with the highest amplitude of the noise signal in the receiving frequency band is a device for generating intermodulation interference.
7. The method of claim 6, wherein before scanning each device in the display screen under test and receiving the noise signal of each device in the receiving frequency band corresponding to the testing frequency band, the method further comprises:
and controlling the display screen to be tested to be in a bright screen state, wherein the display brightness is the maximum brightness.
8. The method of claim 6, wherein scanning each device in the display screen to be tested to receive the noise signal of each device in the receiving frequency band corresponding to the testing frequency band comprises:
and scanning each device arranged on the flexible circuit board and the integrated circuit board included in the display screen to be tested, and receiving the noise signal of each device in the receiving frequency band.
9. The method of claim 6, wherein prior to displaying, by a spectrum analyzer, the amplitude of the noise signal received by the scanning probe, the method further comprises:
and adjusting the scanning frequency of the spectrum analyzer to be matched with the test frequency band and the receiving frequency band.
10. A computer-readable storage medium, on which a computer program is stored, which, when executed, implements the intermodulation interference localization method according to any of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111476144.0A CN114125126A (en) | 2021-12-06 | 2021-12-06 | Intermodulation interference positioning method and device and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111476144.0A CN114125126A (en) | 2021-12-06 | 2021-12-06 | Intermodulation interference positioning method and device and storage medium |
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| CN114125126A true CN114125126A (en) | 2022-03-01 |
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