CN218243533U - Wireless transmission signal anti-interference test equipment - Google Patents
Wireless transmission signal anti-interference test equipment Download PDFInfo
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- CN218243533U CN218243533U CN202221799728.1U CN202221799728U CN218243533U CN 218243533 U CN218243533 U CN 218243533U CN 202221799728 U CN202221799728 U CN 202221799728U CN 218243533 U CN218243533 U CN 218243533U
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Abstract
The utility model relates to a wireless transmission signal anti-interference test equipment for the interference killing feature of receiving terminal equipment, including industrial computer, signal generation equipment, test equipment and signal acquisition equipment. The signal generating equipment is under the control of industrial computer, and the parameter value of the interference signal who generates is controllable adjustable, and the stability of signal is high, linear good, test equipment provides a confined test environment to various use scenes of simulation in its inside, make whole test environment and the interference signal of test usefulness be in controllable state, can carry out repeated test many times to same product, not only can judge the performance of aassessment product, can also be used for analysis and seek problems. Meanwhile, the signal acquisition equipment acquires test information from the test equipment, the industrial personal computer analyzes and processes the test information, anti-interference characteristic curves of different products are obtained through data comparison, and test results and performance data analysis results of the products are visually and definitely obtained.
Description
Technical Field
The utility model relates to a wireless device detects technical field, concretely relates to anti-interference test equipment of wireless transmission signal.
Background
With the application of a large number of mobile terminals, mobile internet and hotspot devices, although convenience is brought to daily life of people, the transmission environment of wireless signals is more and more complex, wireless devices working on the same or similar frequency bands interfere with each other, and the normal work of wireless signal transmitting devices and wireless signal receiving devices is influenced.
Therefore, in the production process of the equipment, the anti-interference capability test of the wireless signal receiving equipment becomes a necessary link of product production. At present, the method for measuring and evaluating the anti-interference capability of a product is relatively original, and generally comprises the following steps:
1. a simple interference source is built, the interference intensity is set, manual sensing counting is carried out on the tested equipment, and simultaneously the interference resistance of the tested equipment is compared with the interference resistance of similar products in the market, so that the interference resistance of the self-produced products is roughly determined.
The disadvantages are as follows: (1) The measuring result is inaccurate, and the interference source is simply built, so that the self state of the interference source is unstable, and the measuring result is greatly influenced. If many people test simultaneously, mutual interference can be expected among the bluetooth equipment, can influence the test result. (2) The test data is not global, the interference signal of the built simple interference source is single, the actual application interference condition is diverse, and the reaction of the equipment is completely different under different interference environments, so that the equipment 1 is better than the equipment 2 under the environment A, and the equipment 2 is better than the equipment 1 under the environment B, and the equipment capability cannot be judged from the global angle.
2. Field measurement: the tested product is carried by a tester to be tested in the field in the actual application scene, and manual counting measurement is still adopted.
The disadvantages are as follows: (1) The labor cost is high, and because the test is carried out dozens of times or even hundreds of times, the test is carried out for a plurality of hours by 2-5 workers each time. (2) The external environment is uncontrollable, the influence on interference signals is large, and because in field measurement, the interference signals are influenced by factors such as personnel density, equipment density, position change and the like, the data change of each measurement is large and can only be used for rough judgment, and the data have no analyzability. (3) The test data has no global property, because the interference condition in the actual environment is diverse, the reaction of the same equipment is different under different interference environments, and the interference signals in the test environment can not be repeated, so that the anti-interference capability of the equipment can not be judged from the global angle.
Therefore, the interference signals in the simple test environment and the field test have large variation and no repeatability and reproducibility, and the measured data can only be finally evaluated by the tested product and cannot be used for analyzing and searching problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide an apparatus for testing wireless transmission signal for immunity against interference, which has a stable testing environment, accurate and reliable testing results, and can repeatedly perform multiple measurements.
The utility model provides a wireless transmission signal anti-interference test equipment for the test is at wireless signal transmission in-process, and the interference killing feature of receiving terminal, includes industrial computer, signal generation equipment, test equipment and signal acquisition equipment:
wherein the signal generating device is configured to generate an interference signal having an adjustable parameter value;
the test equipment is used for simulating the environment of wireless signal transmission, and a wireless signal transmitting device and a wireless signal receiving device are arranged in the test equipment so as to test the anti-interference capability of the wireless signal receiving device under the action of interference signals with different frequency spectrums and different amplitude values;
the signal acquisition equipment is used for acquiring the interference signal in the test equipment and the parameter value of the effective signal received by the wireless signal receiving device in real time;
the industrial personal computer is used for generating control signals to control and adjust parameter values of interference signals generated by the signal generating equipment, so that the test requirements are met, and meanwhile, the interference signals collected in the test equipment and effective signals received by the wireless signal receiving device are analyzed, so that the anti-interference capacity of the wireless signal receiving device is measured.
Furthermore, the signal generating device comprises a multi-path programmable signal generator, at least one frequency band filter, at least one programmable attenuator, a signal synthesizing device, a power divider and at least one radio frequency amplifier which are connected in sequence.
Furthermore, the control ends of the multi-path programmable signal generator and the programmable attenuator are connected to the industrial personal computer and are controlled and adjusted by the industrial personal computer.
Further, the multi-path programmable signal generator has a plurality of first signal output ends, each of the first signal output ends is connected to the second signal input end of one of the band filters, the second signal output end of each of the band filters is connected to the third signal input end of one of the programmable attenuators, the third signal output end of the multi-path programmable attenuator is connected to the fourth signal input end of one of the signal synthesis devices, the fourth signal output end of the signal synthesis device is connected to the fifth signal input end of the power divider, the power divider has a plurality of fifth signal output ends, the fifth signal output end of each of the power dividers is respectively connected to the sixth signal input end of one of the radio frequency amplifiers, and the sixth signal output end of each of the radio frequency amplifiers is connected to one of the test devices.
Furthermore, the number of the first signal output ends of the multi-path programmable signal generator and the number of the frequency band filters are consistent with the number of the programmable attenuators, and the first signal output ends and the frequency band filters are connected in a one-to-one correspondence manner.
Further, the test equipment includes inclosed test shielding box and locates interference antenna, spectrum monitoring antenna and at least one effective signal acquisition equipment in the test shielding box, interference antenna is used for sending the interfering signal that signal generation equipment produced, spectrum monitoring antenna is used for full frequency channel cover to receive interfering signal in the test shielding box.
Furthermore, a swing mechanism is further arranged in the test shielding box and used for driving the wireless signal receiving device to swing at a preset angle during testing.
Further, signal acquisition equipment includes interfering signal control frequency spectrograph and effective signal analysis equipment, interfering signal control frequency spectrograph's input is connected to the spectrum monitoring antenna, interfering signal control frequency spectrograph's output is connected to the industrial computer, effective signal analysis equipment's input is connected to a plurality of effective signal acquisition equipment, effective signal analysis equipment's output is connected to the industrial computer.
Further, the parameter values of the interference signal include frequency spectrum, amplitude and strength.
Further, the frequency coverage range of the interference signal is determined according to the normal operating frequencies of the wireless signal transmitting device and the wireless signal receiving device, and the frequency of the interference signal covers all frequency bands of the normal operating frequencies of the wireless signal transmitting device and the wireless signal receiving device.
Among the above-mentioned wireless transmission signal anti-interference test equipment, signal generation equipment is in under the control of industrial computer, parameter values such as interference signal frequency spectrum, amplitude, intensity that generate are controllable adjustable, and the stability of signal is high, linear good, test equipment provides a confined test environment to at its inside simulation wireless transmitting device with various usage scenarios such as wireless receiving device's removal, rotation, perhaps swing make whole test environment and the interference signal of testing be in controllable state, can carry out the repetition test many times to same product, not only can judge the performance of aassessment product, can also be used for analysis and searching for the problem. Meanwhile, the signal acquisition equipment acquires test information from the test equipment, the industrial personal computer analyzes and processes the test information, anti-interference characteristic curves of different products are obtained through data calculation, and test results and performance data analysis results of the products are visually and definitely obtained. The product of the utility model is simple in structure, easy to produce, low in cost, convenient to popularize.
Drawings
Fig. 1 is a block diagram (single path) of the anti-interference testing device for wireless transmission signals according to the embodiment of the present invention.
Fig. 2 is the utility model discloses structural schematic when the anti-interference test equipment multiunit equipment of wireless transmission signal tests simultaneously.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and drawings.
Please refer to fig. 1 and fig. 2, which illustrate an anti-interference testing apparatus 100 for wireless transmission signals provided by an embodiment of the present invention, for testing the anti-interference capability of the receiving end in the wireless signal transmission process, which includes an industrial personal computer 40, a signal generating apparatus 20, a testing apparatus 10 and a signal collecting apparatus 30:
wherein the signal generation device 20 is configured to generate an interference signal having an adjustable parameter value;
the test equipment 10 is used for simulating an environment of wireless signal transmission, and a wireless signal transmitting device 200 and a wireless signal receiving device 300 are placed in the test equipment 10 to test the anti-interference capability of the wireless signal receiving device 300 under the action of interference signals with different frequency spectrums and different amplitude values;
the signal collecting device 30 is configured to collect, in real time, the interference signal inside the testing device 10 and the parameter value of the effective signal received by the wireless signal receiving apparatus 300;
the industrial personal computer 40 is configured to generate a control signal to control and adjust a parameter value of an interference signal generated by the signal generating device 20, so that the parameter value meets a test requirement, and simultaneously analyze the interference signal acquired in the test device 10 and an effective signal received by the wireless signal receiving device 300, thereby measuring an anti-interference capability of the wireless signal receiving device 300.
Further, the signal generating device 20 includes a multi-channel programmable signal generator 21, at least one band filter 22, at least one programmable attenuator 23, a signal synthesizing device 24, a power divider 25, and at least one radio frequency amplifier 26, which are connected in sequence.
Specifically, referring to fig. 2, the signal generating device 20 has a connection structure for multiplexing output signals when a plurality of sets of the test devices 10 are tested simultaneously.
Further, the control ends of the multi-path programmable signal generator 21 and the programmable attenuator 23 are connected to the industrial personal computer 40, and are controlled and adjusted by the industrial personal computer 40.
Further, the multi-path programmable signal generator 21 has a plurality of first signal output terminals, each of the first signal output terminals is connected to the second signal input terminal of one of the band filters 22, the second signal output terminal of each of the band filters 22 is connected to the third signal input terminal of one of the programmable attenuators 23, the third signal output terminals of the multi-path programmable attenuators 23 are connected to the fourth signal input terminal of one of the signal synthesizing devices 24, the fourth signal output terminal of the signal synthesizing device 24 is connected to the fifth signal input terminal of the power divider 25, the power divider 25 has a plurality of fifth signal output terminals, the fifth signal output terminal of each of the power dividers 25 is respectively connected to the sixth signal input terminal of one of the radio frequency amplifiers 26, and the sixth signal output terminal of each of the radio frequency amplifiers 26 is connected to one of the testing devices 10.
Further, the number of the first signal output ends of the multi-path programmable signal generator 21 and the number of the frequency band filters 22 are the same as the number of the programmable attenuators 23, and are connected in a one-to-one correspondence manner.
Specifically, the multi-channel programmable signal generator 21 sends a multi-channel interference signal source to the outside under the control of the industrial personal computer 40; the frequency band filter 22 selects the frequency band of the original interference signal generated by the multi-path programmable signal generator 21, and filters the interference noise in the original interference signal; the programmable attenuator 23 is used for attenuating the power of an original interference signal, and the programmable attenuator 23 switches the attenuation value of the programmable attenuator 23 without interruption under the control of the industrial personal computer 40 so as to meet the requirements of subsequent equipment; the signal synthesis device 24 synthesizes the original interference signals of different frequency bands output by the programmable attenuators 23 into a composite interference signal with a plurality of different frequency bands; the power divider 25 divides the input one-path composite interference signal into multiple paths of interference signals; the rf amplifier 26 amplifies the power of the interference signal transmitted by the front-end equipment to obtain sufficient rf output power for feeding out through the antenna.
Specifically, in this embodiment, the multi-path programmable signal generator 21 has three signal output ends, the three signal output ends are respectively connected to three frequency band filters 22, each frequency band filter 22 is correspondingly connected to one programmable attenuator 23, and the signal synthesis device 24 combines the interference signals output by the three programmable attenuators 23 to generate a composite interference signal.
In this embodiment, the power divider 25 has four signal output terminals, and the four signal output terminals are respectively connected to one of the rf amplifiers 26 for power amplifying the interference signal.
In other embodiments, the number of the signal output ends of the multi-path programmable signal generator 21, the frequency band filter 22, the programmable attenuator 23, and the radio frequency amplifier 26 may be the same or different, as long as the test requirements are met.
Further, test equipment 10 includes inclosed test shielding box and locates interference antenna 27, spectrum monitoring antenna 31, swing mechanism and at least one effective signal acquisition equipment 30 in the test shielding box, interference antenna 27 is used for sending the interfering signal that signal generation equipment 20 produced, spectrum monitoring antenna 31 is used for full frequency channel to cover and receives interfering signal in the test shielding box. The swing mechanism is used for driving the wireless signal receiving device 300 to swing at a predetermined angle during testing.
Specifically, in the test process, the swing device drives the wireless signal receiving device to swing at a predetermined angle, so as to simulate various use scenarios that the wireless signal receiving device may encounter in daily use, and to comprehensively detect the anti-interference capability of the wireless signal receiving device.
Specifically, the test equipment in this embodiment is used for the anti-interference test of wireless signal receiving devices such as bluetooth signal wireless receiving equipment and WIFI signal wireless receiving equipment. In the testing process, the swing mechanism drives the wireless signal receiving device to swing at a predetermined angle so as to simulate various use scenarios that the wireless signal transmitting device 200 may encounter in daily use, so as to comprehensively detect the anti-interference capability of the wireless signal receiving device 300.
Further, the signal acquisition equipment 30 includes interference signal monitoring spectrometer 32 and effective signal analysis equipment 33, the input of interference signal monitoring spectrometer 32 is connected to spectrum monitoring antenna 31, the output of interference signal monitoring spectrometer 32 is connected to industrial computer 40, the input of effective signal analysis equipment 33 is connected to a plurality of effective signal acquisition equipment 30, the output of effective signal analysis equipment 33 is connected to industrial computer 40.
Specifically, the interference signal monitoring spectrometer 32 is configured to analyze a spectrum structure of the interference signal collected by the spectrum monitoring antenna 31, and the effective signal analyzing device 33 is configured to analyze a spectrum and continuity of a plurality of effective signals collected by the effective signal collecting device 30.
Further, the parameter values of the interference signal include frequency spectrum, amplitude and intensity.
Further, the frequency coverage range of the interference signal is determined according to the normal operating frequencies of the wireless signal transmitting apparatus 200 and the wireless signal receiving apparatus 300, and the frequency of the interference signal covers all frequency bands of the normal operating frequencies of the wireless signal transmitting apparatus 200 and the wireless signal receiving apparatus 300.
In this embodiment, fig. 1 is a single-channel wireless transmission signal anti-interference testing device, where the signal synthesizing device 24 and the power divider 25 are not required in the single-channel device. Fig. 2 shows a multi-channel wireless transmission signal anti-interference testing device, in which the signal synthesizing device 24 and the power divider 25 are required to complete signal distribution in a single-channel device.
In the above-mentioned wireless transmission signal anti-interference test equipment 100, the signal generating equipment 20 is under the control of the industrial personal computer 40, and the generated interference signal frequency spectrum, amplitude, intensity and other parameter values are controllable and adjustable, and the stability of the signal is high, the linearity is good, the test equipment 10 provides a closed test environment, and simulates the wireless transmitting device and the wireless receiving device in its interior in various use scenes such as movement, rotation or swing, so that the whole test environment and the interference signal for testing are in a controllable state, and repeated testing can be performed on the same product for many times, not only can the performance of the product be judged and evaluated, but also can be used for analyzing and searching problems. Meanwhile, the signal acquisition device 30 acquires test information from the test device 10, the test information is analyzed and processed by the industrial personal computer 40, anti-interference characteristic curves of different products are obtained through data calculation, and test results and performance data analysis results of the products are visually and definitely obtained. The product of the utility model is simple in structure, easy to produce, low in cost, convenient to popularize.
It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a wireless transmission signal anti-interference test equipment for the test is at wireless signal transmission in-process, the interference killing feature of receiving terminal, its characterized in that, including industrial computer, signal generation equipment, test equipment and signal acquisition equipment:
wherein the signal generating device is configured to generate an interference signal having an adjustable parameter value;
the test equipment is used for simulating the environment of wireless signal transmission, and a wireless signal transmitting device and a wireless signal receiving device are arranged in the test equipment so as to test the anti-interference capability of the wireless signal receiving device under the action of interference signals with different frequency spectrums and different amplitude values;
the signal acquisition equipment is used for acquiring interference signals in the test equipment and parameter values of effective signals received by the wireless signal receiving device in real time;
the industrial personal computer is used for generating control signals to control and adjust parameter values of interference signals generated by the signal generating equipment, so that the test requirements are met, and meanwhile, the interference signals collected in the test equipment and effective signals received by the wireless signal receiving device are analyzed, so that the anti-interference capacity of the wireless signal receiving device is measured.
2. The wireless transmission signal interference rejection test apparatus of claim 1 wherein said signal generating means comprises, in series, a plurality of programmable signal generators, at least one band filter, at least one programmable attenuator, signal combining means, a power divider, and at least one radio frequency amplifier.
3. The wireless transmission signal anti-interference test equipment according to claim 2, wherein the control ends of the multipath programmable signal generator and the programmable attenuator are connected to the industrial personal computer and are controlled and adjusted by the industrial personal computer.
4. The apparatus of claim 2, wherein said multipath programmable signal generator has a plurality of first signal outputs, each of said first signal outputs being connected to a second signal input of one of said band filters, a second signal output of each of said band filters being connected to a third signal input of one of said programmable attenuators, a third signal output of a multipath of said programmable attenuators being connected to a fourth signal input of one of said signal combining devices, a fourth signal output of said signal combining device being connected to a fifth signal input of said power divider, said power divider having a plurality of fifth signal outputs, a fifth signal output of each of said power dividers being connected to a sixth signal input of one of said rf amplifiers, a sixth signal output of each of said rf amplifiers being connected to one of said testing devices.
5. The wireless transmission signal interference immunity test equipment of claim 4, wherein the number of the first signal output terminals of the multi-path programmable signal generator and the number of the frequency band filters are the same as the number of the programmable attenuators, and are connected in a one-to-one correspondence.
6. The wireless transmission signal anti-interference test device according to claim 1, wherein the test device includes a sealed test shielding box, and an interference antenna, a spectrum monitoring antenna, and at least one effective signal acquisition device that are disposed in the test shielding box, the interference antenna is configured to send the interference signal generated by the signal generation device, and the spectrum monitoring antenna is configured to receive the interference signal in the test shielding box in a full-band coverage manner.
7. The apparatus according to claim 6, wherein a swing mechanism is further provided in the test shielding box, the swing mechanism being configured to drive the wireless signal receiving device to swing at a predetermined angle during testing.
8. The apparatus according to claim 6, wherein the signal acquisition device comprises an interference signal monitoring spectrometer and an effective signal analysis device, an input end of the interference signal monitoring spectrometer is connected to the spectrum monitoring antenna, an output end of the interference signal monitoring spectrometer is connected to the industrial personal computer, an input end of the effective signal analysis device is connected to a plurality of effective signal acquisition devices, and an output end of the effective signal analysis device is connected to the industrial personal computer.
9. The wireless transmission signal immunity test equipment of claim 1 wherein the parameter values of the interference signal include frequency spectrum, amplitude, intensity.
10. The apparatus for testing interference resistance of wireless transmission signals according to claim 1, wherein the frequency coverage of the interference signal is determined according to the normal operating frequencies of the wireless signal transmitting device and the wireless signal receiving device, and the frequency of the interference signal covers the whole frequency band of the normal operating frequencies of the wireless signal transmitting device and the wireless signal receiving device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221799728.1U CN218243533U (en) | 2022-07-13 | 2022-07-13 | Wireless transmission signal anti-interference test equipment |
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| CN202221799728.1U CN218243533U (en) | 2022-07-13 | 2022-07-13 | Wireless transmission signal anti-interference test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115297502A (en) * | 2022-07-13 | 2022-11-04 | 深圳百讴声学技术有限公司 | Wireless transmission signal anti-interference test equipment and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115297502A (en) * | 2022-07-13 | 2022-11-04 | 深圳百讴声学技术有限公司 | Wireless transmission signal anti-interference test equipment and method |
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