CN109150330B - Method, device, equipment and storage medium for testing blocking performance of wireless receiver - Google Patents
Method, device, equipment and storage medium for testing blocking performance of wireless receiver Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for testing the blocking performance of a wireless receiver, wherein the method comprises the following steps: adjusting the sensitivity of the signal receiver to a specified sensitivity value; the control signal generator generates an unmodulated carrier signal in a designated frequency band; gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver ceases to respond to the unmodulated carrier signal; and acquiring a real-time frequency value of the signal generator at the moment, and converting the blocking interference level according to the real-time power value. The monitor can observe the response of the signal receiver to the remote controller in real time, and one person can finish the test independently, so that the investment of personnel is reduced; the shielding room is suitable for signal receivers with various sizes, and the shielding room has enough space, so that the size of the remote controller and the signal receiver is not limited; the test is carried out without using an anechoic chamber, so that the test cost is greatly saved.
Description
Technical Field
The present disclosure relates to a blocking performance test, and more particularly, to a method and an apparatus for testing blocking performance of a wireless receiver.
Background
With the development of electronic technology, wireless products have been integrated into our lives, and China, as a factory in the world, undertakes many works of research, development, production and export of electronic products. The wireless products are exported to European markets and need to be subjected to professional and strict tests, all required test items need to meet the requirements to issue qualified reports and certificates, and the wireless products can smoothly go to the markets.
The blocking test is mainly to evaluate whether the receiver will have an impact on its reception performance when an interfering signal is present under normal reception conditions. The standard test methods are 2, conduction and radiation.
A conduction method: the method mainly aims at the receiver with the standard connector and utilizes the method that each piece of test equipment is directly connected with the tested equipment to carry out the test. The required equipment is 2 signal generators, a coupler and a power meter. The test flow is as follows: 1) the frequency of the signal generator a is adjusted to the normal reception frequency and the modulated signal is added so that the signal receiver can respond to the signal generator a. The frequency value output by the signal generator A is adjusted to be the lowest sensitivity value of the signal receiver and then increased by 3 dB. 2) The signal generator B is turned on and the control signal generator B generates an unmodulated carrier signal in the designated frequency band. 3) The adjustment increases the frequency value of signal generator B until the signal receiver ceases to respond to signal generator a. 4) The receiver is removed and the power value of the signal generator B is observed by the power meter, where the value of B is the value of the receive block level. But the conduction method has a narrow application range; the problem of not being able to encode the modulated signal.
Radiation method: mainly aiming at a receiver with an integral antenna, the test is carried out by using a radiation coupling method, and the test needs to be applied to an anechoic chamber. The test flow is as follows: 1) the frequency of the signal generator A is adjusted to a normal receiving frequency, and a modulation signal is added, so that the signal of the signal generator A is transmitted to the anechoic chamber through the transmitting antenna, and the receiver can respond to the signal generated by the signal generator A. The value output by the signal transmitter A is adjusted to the lowest sensitivity value of the receiver and then increased by 3 dB. 2) The signal generator B is turned on and controlled to generate an unmodulated carrier signal in a specified frequency band, which is transmitted to the anechoic chamber via the transmitting antenna. 3) The adjustment increases the frequency value of signal generator B until the signal receiver ceases to respond to signal generator a. 4) The receiver is removed and the power level emitted by the signal generator B is measured by radiometry. This value is the receive block level value. But the radiation method cannot compile modulation signal codes; the inability to observe the receiver's response to the modulated signal; inconvenience in testing the power value of the read signal generator B, and the like.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a storage medium for testing the blocking performance of a wireless receiver, so that the receiving blocking test is more convenient, faster and more widely applicable.
The invention provides a method for testing the blocking performance of a wireless receiver, which is characterized by comprising the following steps:
adjusting the sensitivity of the signal receiver to a specified sensitivity value;
the control signal generator generates an unmodulated carrier signal in a designated frequency band;
gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver ceases to respond to the unmodulated carrier signal;
and acquiring a real-time frequency value of the signal generator at the moment, and converting the blocking interference level according to the real-time power value.
Further, before the step of adjusting the sensitivity of the signal receiver to a specified sensitivity value, the method further comprises the steps of:
the center frequency of the spectrum analyzer is adjusted to be equal to the transmission frequency of the remote controller.
Further, the step of converting the real-time power value into the blocking interference level includes:
and converting the real-time power of the signal generator according to the real-time frequency value, and obtaining the blocking interference level according to the real-time power.
Further, the center frequency analysis range of the spectrum analyzer comprises 0-50 MHz.
Further, the predetermined sensitivity value is a sum of the lowest sensitivity value of the signal receiver and 3 dB.
Further, the specified frequency band comprises standard specified operating frequencies deviating from plus or minus 2MHz to 15 MHz.
The invention provides a wireless receiver blocking performance testing device, which is characterized by comprising the following components:
the remote controller is used for controlling the response of the signal receiver;
an adjustable attenuator, which can adjust the control response of the remote controller to the signal receiver, is used for adjusting the sensitivity of the signal receiver to a specified sensitivity value, and is used for gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver stops responding to the unmodulated carrier signal;
a signal generator for generating an unmodulated carrier signal at a designated frequency band, the interference signal receiver responsive to operation of the remote control;
the coupler is used for receiving the specified sensitivity value of the adjustable attenuator and the unmodulated carrier of the signal generator and transmitting the unmodulated carrier to the splitter;
the spectrum analyzer is used for converting the real-time power of the signal generator according to the real-time frequency value and obtaining the blocking interference grade according to the real-time power;
the splitter is used for separating the signals of various frequency bands input on the line into a single frequency band and outputting the single frequency band to the spectrum analyzer and the signal receiver;
the monitor and the camera are used for remotely observing the control response of the signal receiver to the remote controller;
the signal receiver is used for receiving the signals in the channel, converting the signals into information with the same physical form as that of the signals during transmission, and transmitting the information to the monitor and the camera;
the shielding chamber is used for isolating from external electromagnetic interference, simulating an ideal electromagnetic environment, ensuring the normal work of the indoor signal receiver and improving the accuracy of a detection result;
the remote controller is connected with the adjustable attenuator and is matched with the signal receiver for use; the adjustable attenuator is connected with the remote controller and the coupler; the signal generator is connected with the coupler; the coupler is connected with the signal generator, the adjustable attenuator and the splitter; the spectrum analyzer is connected with the splitter; the splitter is connected with the spectrum analyzer, the coupler and the signal receiver; the signal receiver is connected with the shunt and is arranged in the shielding chamber; the shielding chamber contains a signal receiver and a camera; the monitor is connected with the camera.
Further, if the remote controller and the receiver are integrated antennas, after the integrated antennas are removed, the integrated antennas are replaced by coaxial cables with standard connectors in a welding mode, and meanwhile, the remote controller and the receiver are connected with a spectrum analyzer.
The invention also proposes a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to any one of the embodiments of the invention when executing the program.
The invention also proposes a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of the embodiments of the invention.
Compared with the prior art, the embodiment of the invention has the following advantages: after the test is finished, the test result can be obtained by directly observing the spectrum analyzer in one step; the invention has wider applicability and is suitable for signal receivers of various types of antennas; coding processing is not required to be performed by a professional software engineer, so that the communication processing time is shortened, and the product testing progress is accelerated; the monitor can observe the response of the signal receiver to the remote controller in real time, and one person can finish the test independently, so that the investment of personnel is reduced; the shielding room is suitable for signal receivers with various sizes, and the shielding room has enough space, so that the size of the remote controller and the signal receiver is not limited; the test is carried out without using an anechoic chamber, so that the test cost is greatly saved.
Drawings
Fig. 1 is a flow chart illustrating a method for performing a blocking performance test of a wireless receiver according to an embodiment of the invention;
FIG. 2 is a flowchart illustrating a method for performing a blocking performance test of a wireless receiver according to an embodiment of the invention;
FIG. 3 is a block diagram of an apparatus for testing the blocking performance of a wireless receiver according to an embodiment of the present invention;
FIG. 4 is a FL-10MHz blocking test result chart of a method for wireless receiver blocking performance testing in accordance with one embodiment of the present invention;
fig. 5 is a FH +10MHz blocking test result chart of the method for testing the blocking performance of a wireless receiver according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
1. A remote controller; 2. an adjustable attenuator; 3. a signal generator; 4. a coupler; 5. a monitor; 6. a splitter; 7. a spectrum analyzer; 8. a camera; 9. a signal receiver; 10. a shielding chamber; 11. a coaxial cable; 12. a computer device; 14. an external device; 16. a processing unit; 18. a bus; 20. a network adapter; 22. an (I/O) interface; 24. a display; 28. a system memory; 30. random Access Memory (RAM); 32. a cache memory; 34. a storage system; 40. a program/utility tool; 42. and (5) program modules.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, the present invention provides a method for testing blocking performance of a wireless receiver, including:
s1, adjusting the sensitivity of the signal receiver to a specified sensitivity value;
s2, the control signal generator generates an unmodulated carrier signal in a designated frequency band;
s3, gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver stops responding to the unmodulated carrier signal;
and S4, acquiring the real-time frequency value of the signal generator at the moment, and converting the blocking interference level according to the real-time power value.
The blocking characteristic embodies the ability of the receiver to receive a desired signal at a given frequency when an interfering signal is present at non-adjacent and non-in-band frequencies, i.e., the ability of the receiver to reject non-adjacent and non-in-band interfering signals. There are many noises and interferences in the mobile channel, and in order to improve the anti-interference capability, not only the performance of the device needs to be improved, but also reasonable networking is necessary. Otherwise, even if there is no external system interference, the normal communication will be destroyed by the interference in the local network. The receiving characteristic of a wireless receiver is an important index for the receiver, and particularly, receivers applied to important fields, such as industrial control receivers, medical receivers implanted into human bodies, traffic signal receivers and the like, may cause great loss if the receivers are interfered and the normal performance of the receivers cannot be guaranteed. Therefore, it is necessary to detect the blocking performance of the receiver quickly and accurately by using a remote controller and a receiver which are matched with each other and by video monitoring.
As in step S1 above, the sensitivity of the receiver is adjusted to a specified sensitivity value. Because signal level adjustment is needed, the level of the input end of the receiver is higher than the sensitivity by 3dB, and the output power of the signal is adjusted to 50% of the rated power. Therefore, it is desirable to adjust the sensitivity of the signal receiver to a specified sensitivity value. The specified sensitivity value is the sum of the lowest sensitivity value of the signal receiver and 3 dB. In this embodiment, the attenuator is used to adjust to the lowest receive sensitivity value of the receiver, and then the attenuator is adjusted to the sum of the lowest sensitivity value and 3 dB.
As described above in step S2, the control signal generator generates an unmodulated carrier signal in the designated frequency band. The designated frequency band includes standard specified operating frequencies that deviate from plus or minus 2MHZ to 15 MHZ. When the adjustment of step S1 is completed, the step S2 is performed for disturbing the response of the remote controller to the receiver. In this embodiment, after S1, the control signal generator generates an unmodulated carrier signal to be applied to the receive chain, the unmodulated carrier having a frequency that deviates from the standard specified operating frequency by plus or minus 2MHZ, plus or minus 10MHZ, and plus or minus 15 MHZ.
As in step S3 above, the frequency value of the unmodulated carrier signal in S2 is increased step by step until the signal receiver stops responding to the unmodulated carrier signal. When the signal of S2 is generated, the receiver stops responding in step S3, which indicates that the energy of the signal received by the receiver is too large and exceeds the linear amplification range for normal reception, so that the receiver cannot operate normally. In this embodiment, the frequency value of the unmodulated carrier signal is increased stepwise until the receiver ceases to respond to the remote control.
As the step S4, the real-time frequency value of the signal generator at this time is obtained, and the blocking interference level is calculated according to the real-time frequency value. When the step S3 is completed and the receiver cannot work normally, the step S4 is executed, in this embodiment, the real-time frequency of the signal generator at this time is obtained by the spectrometer, the blocking interference level is calculated according to the real-time power value, and the magnitude of the blocking signal value is read.
In this embodiment, before the step of adjusting the sensitivity of the signal receiver to the specified sensitivity value, the method further includes the steps of:
and S5, adjusting the center frequency of the spectrum analyzer to be equal to the transmitting frequency of the remote controller.
The spectrum analyzer measures signals sent by a calibrated remote controller. There will typically be a maximum spectral power at the center frequency. The center frequency is a frequency in the middle of the filter passband, and is an upper frequency above the center frequency until the frequency voltage decays to 0.707 times, and is a lower frequency, and a passband is formed between the upper frequency and the lower frequency.
The out-of-band spectral power is close to the noise floor power. The bandwidth of the spectrum analyzer selected needs to cover the analysis frequency. The power of the input signal needs to be within the dynamic range of the spectrum analyzer (typically the maximum input power is around 30 dBm), and if the signal is too strong, the signal can be processed by an adjustable attenuator or coupler. Therefore, before executing steps S1 to S4, step S5 is performed to correct the central power range of the spectrum analyzer, so as to improve the accuracy of the test;
in step S5, the center frequency of the spectrum analyzer is adjusted to be equal to the transmission frequency of the remote controller. The spectral characteristics of the input signal are displayed in the frequency domain for analyzing the power values of the signal generator. In this embodiment, the center frequency of the spectrum analyzer is adjusted to be equal to the transmission frequency of the remote controller, and the analysis range is 0-50 MHz.
In this embodiment, the step of converting the real-time power value into the blocking interference level includes:
and S6, converting the real-time power of the signal generator according to the real-time frequency value, and obtaining the blocking interference level according to the real-time power.
As mentioned in step S6, the real-time power of the signal generator is obtained according to the real-time frequency value, and the corresponding jamming interference level is obtained. In this embodiment, the magnitude of the blocking signal value is read by observing the spectrum analyzer, which is the blocking interference value of the received signal.
The conversion of the real-time frequency and the real-time power can be calculated according to the following formula:
dBm＝10log(Pout/1mW)
dBm is the agility value for the frequency and Pout is the power value in mW.
The invention provides a wireless receiver blocking performance testing device, which comprises:
the remote controller 1 is used for controlling the response of the signal receiver 9;
an adjustable attenuator 2 for adjusting the control response of the remote control 1 to the signal receiver 9, for adjusting the sensitivity of said signal receiver 9 to a given sensitivity value, and for gradually increasing the frequency value of said unmodulated carrier signal until said signal receiver 9 stops responding to said unmodulated carrier signal;
a signal generator 3 for generating an unmodulated carrier, interfering with the response of the signal receiver 9 to the operation of the remote control 1;
the coupler 4 is used for receiving the lowest receiving sensitive value of the adjustable attenuator 2 and the unmodulated carrier wave of the signal generator 3 and transmitting the unmodulated carrier wave to the splitter;
the spectrum analyzer 7 is used for converting the real-time power of the signal generator 3 according to the real-time frequency value and obtaining the blocking interference grade according to the real-time power;
a splitter 6 for splitting a plurality of frequency band signals input on the line into a single frequency band and outputting the single frequency band to a spectrum analyzer 7 and a signal receiver 9;
the monitor 5 and the camera 8 are used for remotely observing the control response of the signal receiver 9 to the remote controller 1;
a signal receiver 9 for receiving the signal in the channel, converting the signal into the information with the same physical form as the transmitted signal, and transmitting the information to the monitor 5 and the camera 8;
the shielding chamber 10 is used for isolating from external electromagnetic interference, simulating an ideal electromagnetic environment, ensuring the normal work of the indoor signal receiver 9 and improving the accuracy of a detection result;
the remote controller 1 is connected with the adjustable attenuator 2 and is matched with the signal receiver 9 for use; the adjustable attenuator 2 is connected with the remote controller 1 and the coupler 4; the signal generator 3 is connected with the coupler 4; the coupler 4 is connected with the signal generator 3, the adjustable attenuator 2 and the branching unit 6; the spectrum analyzer 7 is connected with the splitter 6; the splitter 6 is connected with a spectrum analyzer 7, a coupler 4 and a signal receiver 9; the signal receiver 9 is connected with the branching unit 6 and is arranged in the shielding chamber 10; the shielding chamber 10 contains a signal receiver 9 and a camera 8; the monitor 5 is connected to a camera 8.
The blocking characteristic embodies the ability of the receiver to receive a desired signal at a given frequency when an interfering signal is present at non-adjacent and non-in-band frequencies, i.e., the ability of the receiver to reject non-adjacent and non-in-band interfering signals. There are many noises and interferences in the mobile channel, and in order to improve the anti-interference capability, not only the performance of the device needs to be improved, but also reasonable networking is necessary. Otherwise, even if there is no external system interference, the normal communication will be destroyed by the interference in the local network. The receiving characteristic of a wireless receiver is an important index for the receiver, and particularly, receivers applied to important fields, such as industrial control receivers, medical receivers implanted into human bodies, traffic signal receivers and the like, may cause great loss if the receivers are interfered and the normal performance of the receivers cannot be guaranteed. Therefore, it is necessary to detect the blocking performance of the receiver quickly and accurately by using a remote controller and a receiver which are matched with each other and by video monitoring.
The signal receiver 9 and the remote controller 1 used in this embodiment are respectively a string light receiver of 433.92MHz and its matching remote controller.
In this embodiment, the apparatus for testing blocking performance of a wireless receiver further includes:
if the remote controller 1 and the signal receiver 9 are both integrated antennas, after the integrated antennas are removed, the integrated antennas are replaced by coaxial cables 11 with standard connectors in a welding mode, and meanwhile, the spectrum analyzer 7 is connected.
The remote controller 1 and the signal receiver 9 are integrated antennas without standard antenna joints and program codes of the remote controller, and the test is difficult to be completed smoothly, conveniently and quickly by utilizing a conduction method and radiation transmission. By using the test arrangement scheme of the method, the remote controller 1 and the lamp string receiver are welded to form the coaxial cable 11.
Connecting a lamp string remote controller 1 with an adjustable attenuator 2; the adjustable attenuator 2 is connected with the lamp string remote controller 1 and the coupler 4; the signal generator 3 is connected with the coupler 4; the coupler 4 is connected with the signal generator 3, the adjustable attenuator 2 and the branching unit 6; the spectrum analyzer 7 is connected with the branching unit 6; the shunt 6 is connected with the spectrum analyzer 7, the coupler 4 and the lamp string receiver; the lamp string receiver is connected with the shunt 6 and is arranged in the shielding chamber 10; the shielding chamber 10 contains a lamp string receiver and a camera 8; the monitor 5 is connected to a camera 8.
As the step S1, the sensitivity of the signal receiver 9 is adjusted to a specified sensitivity value through the transmission of the adjustable attenuator 2, the coupler 4 and the splitter 6, and the video camera 8 and the monitor 5 are used for synchronous monitoring;
as the above step S2, the control signal generator 3 generates an unmodulated carrier signal in the designated frequency band, and the transmission through the coupler 4 and the splitter 6 interferes with the signal receiver 9;
as the step S3, the frequency value of the unmodulated carrier signal is gradually increased by the adjustable attenuator 2, and the unmodulated carrier signal is transmitted through the coupler 4 and the splitter 6 until the signal receiver 9 stops responding to the unmodulated carrier signal, and simultaneously, the video camera 8 and the monitor 5 perform synchronous monitoring;
as the above step S4, the spectrum analyzer 7 obtains the real-time frequency value of the signal generator 9 at this time, and converts the blocking interference level according to the real-time frequency value;
as the above step S5, the center frequency of the spectrum analyzer 7 is adjusted to be equal to the transmitting frequency of the remote controller 1, the light string receiver is controlled by the remote controller 1, and the video camera 8 and the monitor 5 are used for synchronous monitoring to observe the response of the light string receiver to the signal of the remote controller 1 in time;
as described above in step S6, the real-time power of the signal generator 9 is converted from the real-time frequency value passed through the spectrum analyzer 7, and the interference level is obtained from the real-time power;
in this embodiment, the center frequency of the spectrum analyzer 7 is adjusted to be equal to the transmission frequency of the remote controller 1, and the analysis range is 0 to 50 MHz. The light string receiver is controlled by the remote controller 1, synchronous monitoring is implemented by the video camera 8 and the monitor 5, the response of the light string receiver to the signal of the remote controller 1 is observed in time, the adjustable attenuator 2 is used for adjusting the lowest receiving sensitivity value of the light string receiver, and then the adjustable attenuator 2 is adjusted to the sum of the lowest sensitivity value and 3 dB. The control signal generator 3 then generates an unmodulated carrier signal for application to the receive chain, the unmodulated carrier having a frequency which deviates from the operating frequency specified by the standard by plus or minus 2MHZ, plus or minus 10MHZ and plus or minus 15MHZ frequency points. The frequency value of the unmodulated carrier signal is increased in steps until the light string ceases to respond to the remote control. At this time, the spectrum analyzer 7 is observed, and the magnitude of the blocking signal value is read, that is, the blocking interference value of the received signal.
In an embodiment of the present invention, the present invention further provides a computer device, where the computer device 12 is represented in a general computing device, and the components of the computer device 12 may include but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (commonly referred to as "hard drives"). Although not shown in FIG. 6, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. The memory may include at least one program product having a set (e.g., at least one) of program modules 42, with the program modules 42 configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules 42, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
The processing unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as implementing the method for wireless receiver blocking performance testing provided by the embodiments of the present invention.
That is, the processing unit 16 implements, when executing the program,: adjusting the sensitivity of the signal receiver 9 to a specified sensitivity value; the control signal generator 3 generates an unmodulated carrier signal in a specified frequency band; gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver 9 stops responding to the unmodulated carrier signal; and acquiring the real-time frequency value of the signal generator 3 at the moment, and converting the blocking interference level according to the real-time power value.
In an embodiment of the present invention, the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the method for testing the blocking performance of a wireless receiver according to all embodiments of the present application:
that is, the program when executed by the processor implements: adjusting the sensitivity of the signal receiver 9 to a specified sensitivity value; the control signal generator 3 generates an unmodulated carrier signal in a specified frequency band; gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver 9 stops responding to the unmodulated carrier signal; and acquiring the real-time frequency value of the signal generator 3 at the moment, and converting the blocking interference level according to the real-time power value.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer-readable storage medium or a computer-readable signal medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPOM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The method, the device, the equipment and the storage medium for testing the blocking performance of the wireless receiver have the beneficial effects that: the monitor can observe the response of the signal receiver to the remote controller in real time, and one person can finish the test independently, so that the investment of personnel is reduced; the shielding room is suitable for signal receivers with various sizes, and the shielding room has enough space, so that the size of the remote controller and the signal receiver is not limited; the test is carried out without using an anechoic chamber, so that the test cost is greatly saved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for testing the blocking performance of a wireless receiver is characterized by comprising the following steps:
adjusting the sensitivity of the signal receiver to a specified sensitivity value;
the control signal generator generates an unmodulated carrier signal in a designated frequency band;
gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver ceases to respond to the unmodulated carrier signal;
acquiring a real-time frequency value of the signal generator at the moment, converting the real-time power of the signal generator according to the real-time frequency value, and obtaining a blocking interference grade according to the real-time power; the real-time power of the signal generator is converted according to the real-time frequency value, and the blocking interference grade is obtained according to the real-time power and is realized through the spectrum analyzer.
2. The method of claim 1, further comprising, before the step of adjusting the sensitivity of the signal receiver to a specified sensitivity value, the steps of:
and adjusting the center frequency of the spectrum analyzer to be equal to the transmitting frequency of a remote controller.
3. The method of claim 2, wherein the center frequency analysis range of the spectrum analyzer comprises 0-50 MHz.
4. The method of claim 1, wherein the specified sensitivity value is a sum of a lowest sensitivity value of the signal receiver and 3 dB.
5. The method of claim 1, wherein the specified frequency band comprises standard specified operating frequencies that deviate from plus or minus 2MHZ-15 MHZ.
6. A wireless receiver blocking performance testing apparatus, comprising:
the remote controller is used for controlling the response of the signal receiver;
the adjustable attenuator is used for adjusting the control response of the remote controller to the signal receiver, adjusting the sensitivity of the signal receiver to a specified sensitivity value, and gradually increasing the frequency value of the unmodulated carrier signal until the signal receiver stops responding to the unmodulated carrier signal;
a signal generator for generating an unmodulated carrier signal at a designated frequency band in the step, the signal generator interfering with a response of the signal receiver to operation of the remote control;
the coupler is used for receiving the specified sensitivity value of the adjustable attenuator and the unmodulated carrier of the signal generator and transmitting the unmodulated carrier to the splitter;
the spectrum analyzer is used for converting the real-time power of the signal generator according to the real-time frequency value in the step and obtaining the blocking interference grade according to the real-time power;
the splitter is used for separating the signals of various frequency bands input on the line into a single frequency band and outputting the single frequency band to the spectrum analyzer and the signal receiver;
the monitor and the camera are used for remotely observing the control response of the signal receiver to the remote controller;
the signal receiver is used for receiving the signals in the channel, converting the signals into information with the same physical form as that of the signals during transmission, and transmitting the information to the monitor and the camera;
the shielding chamber is used for isolating external electromagnetic interference, simulating an ideal electromagnetic environment, ensuring the normal work of the indoor signal receiver and improving the accuracy of a detection result;
the remote controller is connected with the adjustable attenuator and is matched with the signal receiver for use; the adjustable attenuator is connected with the remote controller and the coupler; the signal generator is connected with the coupler; the coupler is connected with the signal generator, the adjustable attenuator and the splitter; the spectrum analyzer is connected with the splitter; the splitter is connected with the spectrum analyzer, the coupler and the signal receiver; the signal receiver is connected with the shunt and is arranged in the shielding chamber; the shielding chamber contains a signal receiver and a camera; the monitor is connected with the camera.
7. The apparatus of claim 6, wherein when the remote control and the receiver are integrated antennas, the integrated antennas are removed and replaced by coaxial cables with standard connectors by soldering, and the integrated antennas are respectively connected with the spectrum analyzer.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1-5 when executing the program.
9. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method of any one of claims 1 to 5.
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| CN101277121A (en) * | 2008-05-22 | 2008-10-01 | 高拓讯达（北京）科技有限公司 | Low-power consumption receiver capable of dynamically detecting barrage jamming signal |
| CN104254089A (en) * | 2013-06-25 | 2014-12-31 | ***通信集团公司 | Obstruction index test method, device and system |
| CN106209279A (en) * | 2016-06-29 | 2016-12-07 | 中国人民解放军军械工程学院 | Multifrequency electromagnetic radiation strong signal blocking interference effect Forecasting Methodology in receiver band |
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| CN101110617B (en) * | 2006-07-19 | 2011-11-02 | 中国电信股份有限公司 | Method for confirming interfering signal power, CDMA base station apparatus and method |
| CN104601260B (en) * | 2014-12-26 | 2017-08-11 | 大唐移动通信设备有限公司 | A kind of method and system of test receiver sensitivity |
| CN107896377A (en) * | 2017-11-07 | 2018-04-10 | 上海同耀通信技术有限公司 | A kind of detecting system of blocking performance |
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| CN101277121A (en) * | 2008-05-22 | 2008-10-01 | 高拓讯达（北京）科技有限公司 | Low-power consumption receiver capable of dynamically detecting barrage jamming signal |
| CN104254089A (en) * | 2013-06-25 | 2014-12-31 | ***通信集团公司 | Obstruction index test method, device and system |
| CN106209279A (en) * | 2016-06-29 | 2016-12-07 | 中国人民解放军军械工程学院 | Multifrequency electromagnetic radiation strong signal blocking interference effect Forecasting Methodology in receiver band |
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