CN216816804U - Electronic instrument broadband noise detection system based on virtual instrument - Google Patents
Electronic instrument broadband noise detection system based on virtual instrument Download PDFInfo
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- CN216816804U CN216816804U CN202122860930.2U CN202122860930U CN216816804U CN 216816804 U CN216816804 U CN 216816804U CN 202122860930 U CN202122860930 U CN 202122860930U CN 216816804 U CN216816804 U CN 216816804U
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Abstract
The utility model discloses an electronic instrument broadband noise detection system based on a virtual instrument, which comprises a noise collection module, wherein the output end of the noise collection module is connected with a signal processing module, the output end of the signal processing module is connected with a noise detection module, and the signal processing module comprises a low-pass filter, a band-pass filter, a high-pass filter and a preamplifier. This electronic instrument wide band noise detecting system based on virtual instrument, collect the back at noise collection module to the noise signal, handle the noise signal through signal processing module, thereby categorised carry out the analysis to the noise signal and compare, the low pass filter who adds, band pass filter and high pass filter can filter the wide band noise in proper order, a set of noise signal screening that makes the collection is the low-frequency channel, intermediate frequency channel and high-frequency channel, thereby carry out different detections and processing to the noise of different frequency channels, reach the purpose to electronic instrument wide band noise detection.
Description
Technical Field
The utility model relates to the technical field of noise detection, in particular to a broadband noise detection system of an electronic instrument based on a virtual instrument.
Background
The virtual instrument technology is to utilize high-performance modular hardware and combine efficient and flexible software to complete various testing, measuring and automation applications. The flexible and efficient software can help a user to create a completely self-defined user interface, the modularized hardware can conveniently provide all-around system integration, and a standard software and hardware platform can meet the requirements for synchronization and timing application. In the electronic instrument detection process, noise of the electronic instrument is often detected based on a virtual instrument.
Most of existing electronic instrument noise detection systems can only meet low-frequency noise detection, and frequency classification processing cannot be performed on noise, so that detection results are not accurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a virtual instrument-based electronic instrument broadband noise detection system, which aims to solve the problem that the detection result is not accurate due to the fact that most of electronic instrument noise detection systems only can meet low-frequency noise detection and cannot perform frequency classification processing on noise.
In order to achieve the purpose, the utility model provides the following technical scheme: electronic instrument wide band noise detecting system based on virtual instrument includes:
the noise detection device comprises a noise collection module, a signal processing module and a noise detection module, wherein the output end of the noise collection module is connected with the signal processing module, the output end of the signal processing module is connected with the noise detection module, the signal processing module comprises a low-pass filter, a band-pass filter, a high-pass filter and a preamplifier, and the output end of the low-pass filter is connected with the preamplifier;
the control module is connected to the output end of the noise detection module, the output end of the control module is connected with a noise reduction module, and the noise reduction module comprises a phase inverter;
the information recording module is connected to the output end of the control module;
the noise output module is connected to the output end of the noise reduction module;
and the time delay device is arranged at the input end of the control module.
Preferably, the information recording module comprises an oscilloscope and a storage unit, and the oscilloscope and the storage unit are electrically connected in parallel.
Preferably, the oscilloscope, the control module and the delayer are sequentially and electrically connected in series through a lead, and the delayer, the control module and the inverter are sequentially and electrically connected in series through a lead.
Preferably, the control module is electrically connected with the storage unit and the oscilloscope respectively.
Preferably, the noise collection module, the signal processing module, the noise detection module and the control module are sequentially connected in series electrically through a lead.
Preferably, the low-pass filter, the band-pass filter and the high-pass filter are electrically connected in parallel, and the preamplifier is electrically connected with the low-pass filter.
Preferably, the control module, the noise reduction module and the noise output module are sequentially and electrically connected in series through a lead.
Preferably, the signal processing module, the low-pass filter, the preamplifier and the control module are electrically connected in series in sequence through a lead.
Preferably, the control module, the information recording module and the storage unit are electrically connected in series in sequence through a lead.
Preferably, the control module is electrically connected with the noise reduction module and the information recording module respectively, and the noise reduction module and the information recording module are electrically connected in parallel.
Compared with the prior art, the utility model provides a virtual instrument-based electronic instrument broadband noise detection system, which has the following beneficial effects: this electronic instrument wide band noise detecting system based on virtual instrument, collect the back at noise collection module to the noise signal, handle the noise signal through signal processing module, thereby categorised carry out the analysis to the noise signal and compare, the low pass filter who adds, band pass filter and high pass filter can filter the wide band noise in proper order, a set of noise signal screening that makes the collection is the low-frequency channel, intermediate frequency channel and high-frequency channel, thereby carry out different detections and processing to the noise of different frequency channels, reach the purpose to electronic instrument wide band noise detection.
1. According to the utility model, the low-pass filter, the band-pass filter and the high-pass filter are arranged to sequentially filter broadband noise, so that a group of collected noise signals are screened into a low frequency band, a middle frequency band and a high frequency band, and signal transmission and amplification are correspondingly carried out, so that the noise detection and analysis are more accurate; through the arranged phase inverter, the phase inverter can send out an inverted wave to the noise signal, so that the sound wave signal is interfered, the sound wave signal is mutually offset and reduced, and the effect of low-frequency noise reduction is achieved;
2. according to the utility model, through the arranged delayer, a timing effect can be achieved on the reverse phase wave emitted by the phase inverter, delay dislocation between the emitted reverse phase wave and the received sound wave signal is avoided, and the phase inverter can accurately send the reverse phase wave to the noise signal under the control of the control module;
3. according to the utility model, the oscilloscope is arranged, the received noise signal can be converted into image information through the control module and directly displayed on the oscilloscope, so that a detection person can directly observe the noise frequency and amplitude, the generated noise can be effectively interfered and reduced, and all the acquired information is stored through the storage unit, thereby facilitating the subsequent data searching work.
Drawings
FIG. 1 is a schematic overall workflow of the present invention;
FIG. 2 is a schematic diagram of the workflow of an oscilloscope of the present invention;
fig. 3 is a schematic diagram of a working flow of the signal processing module according to the present invention.
In the figure: 1. a noise collection module; 2. a signal processing module; 3. a noise detection module; 4. a control module; 5. an information recording module; 501. an oscilloscope; 502. a storage unit; 6. a noise reduction module; 7. a noise output module; 8. an inverter; 9. a time delay; 10. a low-pass filter; 11. a band-pass filter; 12. a high-pass filter; 13. a preamplifier.
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.
As shown in fig. 1 and fig. 2, the electronic instrument broadband noise detection system based on virtual instrument includes: the control module 4 is connected to the output end of the noise detection module 3, the noise collection module 1, the signal processing module 2, the noise detection module 3 and the control module 4 are sequentially and electrically connected in series through a wire, the output end of the control module 4 is connected with the noise reduction module 6, and the noise reduction module 6 comprises a phase inverter 8; the information recording module 5 is connected to the output end of the control module 4; the oscilloscope 501 and the storage unit 502 are electrically connected in parallel, the oscilloscope 501, the control module 4 and the time delay 9 are electrically connected in series in sequence through a lead, the delayer 9, the control module 4 and the inverter 8 are electrically connected in series in sequence through a lead, the control module 4 is respectively electrically connected with the storage unit 502 and the oscilloscope 501, the control module 4, the information recording module 5 and the storage unit 502 are electrically connected in series in sequence through a lead, the oscilloscope 501 is arranged, the received noise signal can be converted into image information through the control module 4, displayed directly on the oscilloscope 501, so that the detection personnel can directly observe the frequency and the amplitude of the noise, therefore, interference noise reduction can be effectively carried out on the generated noise, and all collected information is stored through the storage unit 502, so that subsequent data searching work is facilitated; the noise output module 7 is connected to the output end of the noise reduction module 6, and the control module 4, the noise reduction module 6 and the noise output module 7 are sequentially and electrically connected in series through a wire; delayer 9, it installs the input at control module 4, control module 4 respectively with fall make an uproar module 6 and information recording module 5 electric connection, and fall make an uproar module 6 and information recording module 5 between the electric property parallelly connected, through the delayer 9 that sets up, can play the timing effect to the reverse phase ripples that inverter 8 sent, avoid the reverse phase ripples to send the time delay dislocation with received sound wave signal emergence, inverter 8 can be accurate under control module 4's control to noise signal transmission reverse phase ripples.
As shown in fig. 3, the electronic instrument broadband noise detection system based on virtual instrument includes: the noise collection module 1, the output end of the noise collection module 1 is connected with a signal processing module 2, the output end of the signal processing module 2 is connected with a noise detection module 3, the signal processing module 2 comprises a low-pass filter 10, a band-pass filter 11, a high-pass filter 12 and a preamplifier 13, the output end of the low-pass filter 10 is connected with the preamplifier 13, the low-pass filter 10, the band-pass filter 11 and the high-pass filter 12 are electrically connected in parallel, the preamplifier 13 is electrically connected with the low-pass filter 10, the signal processing module 2, the low-pass filter 10, the preamplifier 13 and the control module 4 are sequentially connected in series through conducting wires, broadband noise can be sequentially filtered through the low-pass filter 10, the band-pass filter 11 and the high-pass filter 12, so that a group of collected noise signals can be screened into a low frequency band, a middle frequency band and a high frequency band, signal transmission and amplification are correspondingly carried out, and noise detection and analysis are more accurate; through the phase inverter 8 that sets up, can send the anti-phase wave to the noise signal to disturb the sound wave signal, make the sound wave signal offset each other and reduce, reach the effect of making an uproar falls in the low frequency.
The working principle is as follows: when the electronic instrument broadband noise detection system based on the virtual instrument is used, firstly, a noise collection module 1 collects noise signals, the collected noise signals are transmitted to a signal processing module 2, the signal processing module 2 processes the noise signals, the noise signals are filtered through a low-pass filter 10, a band-pass filter 11 and a high-pass filter 12 at the same time, and a group of collected noise signals are screened into a low frequency band, a middle frequency band and a high frequency band; secondly, the processed noise signals are transmitted to a noise detection module 3, the noise detection module 3 performs detection analysis on the three groups of data to obtain detection results, and the results are fed back to a control module 4; then, the control module 4 controls the noise reduction module 6 to immediately respond, and sends an inverse wave to the noise signal through the inverter 8, so as to interfere the sound wave signal, so that the sound wave signal is mutually offset and reduced, and the effect of low-frequency noise reduction is achieved, meanwhile, the oscilloscope 501 transmits the sound wave signal to the control module 4, the control module 4 compares the sound wave signal transmitted by the oscilloscope 501 with the inverse wave sent by the inverter 8, if phase delay is generated, a signal is sent to the delayer 9, at this time, the delayer 9 feeds back information to the control module 4 after reaching a specified time length, the control module 4 sends an instruction again, the inverter 8 is synchronously started to work, and the accurate sending of the inverter 8 is completed; finally, the received noise signals are converted into image information through the control module 4 and directly displayed on the oscilloscope 501, so that detection personnel can directly observe the noise frequency and amplitude, the generated noise can be effectively interfered and reduced, all the acquired information is stored through the storage unit 502, and subsequent data searching work is facilitated, namely the working principle of the electronic instrument broadband noise detection system based on the virtual instrument.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Electronic instrument wide band noise detecting system based on virtual instrument, its characterized in that includes:
the noise detection device comprises a noise collection module (1), wherein the output end of the noise collection module (1) is connected with a signal processing module (2), the output end of the signal processing module (2) is connected with a noise detection module (3), the signal processing module (2) comprises a low-pass filter (10), a band-pass filter (11), a high-pass filter (12) and a preamplifier (13), and the output end of the low-pass filter (10) is connected with the preamplifier (13);
the control module (4) is connected to the output end of the noise detection module (3), the output end of the control module (4) is connected with a noise reduction module (6), and the noise reduction module (6) comprises a phase inverter (8);
the information recording module (5) is connected to the output end of the control module (4);
the noise output module (7) is connected to the output end of the noise reduction module (6);
and the delayer (9) is arranged at the input end of the control module (4).
2. The virtual instrument based electronic instrument broadband noise detection system according to claim 1, wherein the information recording module (5) comprises an oscilloscope (501) and a storage unit (502), and the oscilloscope (501) and the storage unit (502) are electrically connected in parallel.
3. The virtual instrument based electronic instrument broadband noise detection system according to claim 2, wherein the oscilloscope (501), the control module (4) and the delayer (9) are electrically connected in series in sequence through a conducting wire, and the delayer (9), the control module (4) and the inverter (8) are electrically connected in series in sequence through a conducting wire.
4. The virtual instrument based electronic instrument broadband noise detection system according to claim 2, wherein the control module (4) is electrically connected to the storage unit (502) and the oscilloscope (501), respectively.
5. The broadband noise detection system for electronic instruments based on virtual instruments according to claim 1, wherein the noise collection module (1), the signal processing module (2), the noise detection module (3) and the control module (4) are electrically connected in series in sequence through wires.
6. The virtual instrument based electronic instrument broadband noise detection system according to claim 1, wherein the low pass filter (10), the band pass filter (11) and the high pass filter (12) are electrically connected in parallel, and the preamplifier (13) is electrically connected with the low pass filter (10).
7. The broadband noise detection system for electronic instruments based on virtual instruments according to claim 1, wherein the control module (4), the noise reduction module (6) and the noise output module (7) are electrically connected in series in sequence through conducting wires.
8. The virtual instrument based electronic instrument broadband noise detection system according to claim 1, wherein the signal processing module (2), the low pass filter (10), the preamplifier (13) and the control module (4) are electrically connected in series in sequence through a lead.
9. The broadband noise detection system for electronic instruments based on virtual instruments as claimed in claim 1, wherein the control module (4), the information recording module (5) and the storage unit (502) are electrically connected in series in sequence through conducting wires.
10. The broadband noise detection system for electronic instruments based on virtual instruments according to claim 1, wherein the control module (4) is electrically connected to the noise reduction module (6) and the information recording module (5), respectively, and the noise reduction module (6) and the information recording module (5) are electrically connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122860930.2U CN216816804U (en) | 2021-11-22 | 2021-11-22 | Electronic instrument broadband noise detection system based on virtual instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122860930.2U CN216816804U (en) | 2021-11-22 | 2021-11-22 | Electronic instrument broadband noise detection system based on virtual instrument |
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| Publication Number | Publication Date |
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| CN216816804U true CN216816804U (en) | 2022-06-24 |
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| CN202122860930.2U Active CN216816804U (en) | 2021-11-22 | 2021-11-22 | Electronic instrument broadband noise detection system based on virtual instrument |
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