CN110535489A - The acquisition and play system of low-voltage carrier communication high-frequency interferencing signal - Google Patents
The acquisition and play system of low-voltage carrier communication high-frequency interferencing signal Download PDFInfo
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- CN110535489A CN110535489A CN201910731315.6A CN201910731315A CN110535489A CN 110535489 A CN110535489 A CN 110535489A CN 201910731315 A CN201910731315 A CN 201910731315A CN 110535489 A CN110535489 A CN 110535489A
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- 238000012360 testing method Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 8
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- 230000005540 biological transmission Effects 0.000 claims description 6
- 208000033748 Device issues Diseases 0.000 claims 1
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- 230000008878 coupling Effects 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
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- 238000002474 experimental method Methods 0.000 description 2
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- 238000005457 optimization Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
Abstract
It is the acquisition and play system of a kind of low-voltage carrier communication high-frequency interferencing signal the present invention relates to interference free performance the field of test technology, including including noise signal acquisition device, emulation module, noise signal electrical cabinet and electric energy meter cabinet；Noise signal acquisition device includes that acquisition coupler and A/D capture card, A/D capture card noise are sent to emulation module；Emulation module is used to noise signal carrying out integration processing；Noise signal electrical cabinet includes industrial personal computer, noise output control module and first order amplifier, and electric energy meter cabinet includes that be coupled device, B of second level amplifier, A is coupled device and C is coupled device etc..The present invention acquires the noise data at power utilization environment scene by A/D capture card, noise is stored by the noise database in industrial personal computer, noise signal is played out under various circumstances through noise output control module, actual noise signal is simulated to achieve the purpose that really to restore presence feature platform area noise, provides true noise data for low pressure carrier wave power communication noise reduction.
Description
Technical field
The present invention relates to interference free performance the field of test technology, are a kind of acquisitions of low-voltage carrier communication high-frequency interferencing signal
With play system.
Background technique
Low-voltage carrier communication refers to using already present low-voltage network as transmission medium, realizes data transmitting and letter
Cease the technology of exchange.Due to can directly utilize built voltage network, so that building for communication transmission medium be greatly saved
If investment.Traditional low-voltage powerline carrier communication mostly uses greatly frequency band transmission, and the means using carrier modulation will be conveyed
Power communication digital signal move in the carrier signal of upper frequency, the existing signal transmitting after modulation /demodulation.Although low pressure
Carrier communication has many advantages, such as quick, durable firm, small investment, however just because of it is using low-voltage power line as communication matchmaker
It is situated between, therefore there is the disadvantages of more such as noise type, interference source strength, load is more, signal decaying is big.
Summary of the invention
The present invention provides the acquisitions and play system of a kind of low-voltage carrier communication high-frequency interferencing signal, overcome above-mentioned existing
Have the deficiency of technology, can effectively solve in the prior art because cannot obtain and inverting communication device locating for noise circumstance, lead
Cause the problem to low-voltage carrier communication noise jamming test inaccuracy.
The technical scheme is that being realized by following measures: a kind of low-voltage carrier communication high-frequency interferencing signal
Acquisition and play system, including noise signal acquisition device, emulation module, noise signal electrical cabinet and electric energy meter cabinet；
Noise signal acquisition device includes the A/D capture card for acquiring coupler and acquiring line noise signals, and A/D capture card will be adopted
Each noise-like signal of collection is sent to emulation module；
Emulation module is used to carry out each noise-like signal of acquisition to integrate the type of processing and abundant noise；
Noise signal electrical cabinet includes industrial personal computer, noise output control module and first order amplifier, and industrial personal computer receives emulation mould
Each noise-like signal is simultaneously centrally stored in industrial personal computer by each noise-like signal of block transmission, forms noise database, and control is each
Noise like output and broadcasting, noise output control module for transferring the area noise database Zhong Getai noise information, make an uproar by control
The output of the gain factor and amplitude, time-domain diagram, spectrogram of acoustical signal, first order amplifier for amplifying through noise for the first time
The amplitude of the noise signal of output control module processing output；
Electric energy meter cabinet includes that be coupled device, B of second level amplifier, A is coupled device and C is coupled device, first order amplifier and
It is connected between two-stage amplifier by signal output line, for amplifying noise signal again, A's second level amplifier is coupled
Device, B device, the C device that is coupled that is coupled are respectively used to prevent A phase, the power current on B phase and C phase power line to enter communication terminal.
Here is the further optimization and/or improvements to invention technology described above scheme:
Above-mentioned further includes channel test module, and the channel test module includes sinusoidal signal generator and communication terminal, institute
It states sinusoidal signal generator to issue the test signal of assigned frequency and be sent to communication terminal, can be detected according to communication terminal
It is whether good with the communications status for testing communication channel to the test signal of the assigned frequency issued.
Above-mentioned signal output line is the connecting line that D/A channel signal output all the way is converted at least eight road signals, with
For noise needed for providing test at least eight electric energy meter cabinets.
Above-mentioned first order amplifier, second level amplifier model be FAY2000, the first order amplifier quantity is
1, second level amplifier quantity is at least 8.
Above-mentioned A be coupled device, B be coupled device, C be coupled device model be ZCAT3035-1330 coupler, the coupling
The quantity of clutch is at least 24.
Model ZCAT3035-1330, A/D the capture card model of above-mentioned acquisition coupler grinds magnificent PCI-1721.
The beneficial effects of the present invention are:
(1) present invention can accurately acquire the noise data at power utilization environment scene by A/D capture card and pass through making an uproar in industrial personal computer
Sound database purchase noise carries out noise signal by noise output control module after storing noise data under various circumstances
It plays, simulates actual noise signal to achieve the purpose that really to restore presence feature platform area noise, be low pressure carrier wave power communication
Noise reduction provides true noise data, helps the performance of electric-power metering center analysis dynamometer instrument meter reading under real noise environment.
(2) present invention utilizes MATLAB simulation software, enriches the type of noise, in experiment desk research low pressure carrier wave
Communication noise interference provides environmental condition and test platform.
(3) needed for the present invention is easily called in the noise database established by noise signal output control module
Noise type, control the amplification size of each noise-like signal, sample frequency and time domain, frequency domain figure output, easy to operate, function
Can be intuitive, to meet the needs of users.
Detailed description of the invention
Attached drawing 1 is system block diagram of the invention.
Attached drawing 2 is the structural block diagram of noise signal acquisition device of the present invention.
Attached drawing 3 is the structural block diagram of noise signal electrical cabinet of the present invention.
Attached drawing 4 is the structural block diagram of electric energy meter cabinet of the present invention.
Attached drawing 5 is the structural schematic diagram of signal testing module of the present invention.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
Below with reference to examples and drawings, the invention will be further described:
As shown in attached drawing 1,2,3,4, a kind of acquisition and play system of low-voltage carrier communication high-frequency interferencing signal, including noise
Signal pickup assembly, emulation module, noise signal electrical cabinet and electric energy meter cabinet；
Noise signal acquisition device includes the A/D capture card for acquiring coupler and acquiring line noise signals, and A/D capture card will be adopted
Each noise-like signal of collection is sent to emulation module；
Emulation module is used to carry out each noise-like signal of acquisition to integrate the type of processing and abundant noise；
Noise signal electrical cabinet includes industrial personal computer, noise output control module and first order amplifier, and industrial personal computer receives emulation mould
Each noise-like signal is simultaneously centrally stored in industrial personal computer by each noise-like signal of block transmission, forms noise database, and control is each
Noise like output and broadcasting, noise output control module for transferring the area noise database Zhong Getai noise information, make an uproar by control
The output of the gain factor and amplitude, time-domain diagram, spectrogram of acoustical signal, first order amplifier for amplifying through noise for the first time
The amplitude of the noise signal of output control module processing output；
Electric energy meter cabinet includes that be coupled device, B of second level amplifier, A is coupled device and C is coupled device, first order amplifier and
It is connected between two-stage amplifier by signal output line, for amplifying noise signal again, A's second level amplifier is coupled
Device, B device, the C device that is coupled that is coupled are respectively used to prevent A phase, the power current on B phase and C phase power line to enter communication terminal.
Emulation module of the invention can be MATLAB simulation software, can be used for enriching the type of noise, provide except A/D is acquired
Block other collected noise likes.Industrial personal computer of the invention can be to grind magnificent industrial control computer, and noise signal passes through MATLAB
After simulation software integration processing, stored by USB interface into the noise database for grinding magnificent industrial computer, then by grinding Chinese workers' industry
The broadcasting and output of labview software control noise in computer.The present invention voluntarily works out control journey by labview software
Sequence can input the noise data signal of collection in worksite, be played back, while injecting power circuit, to simulate actual noise signal.
Noise output control module can be high-speed d/a capture card, grind and lead between magnificent industrial control computer and noise output control module
Pci bus connection is crossed, realizes the broadcasting and output of each noise like.Second level amplifier is mentioned for noise signal to be further amplified
The carrying load ability of strong noise.A be coupled device, the C of device, B that be coupled is coupled device for preventing 50Hz power frequency electric on power line
Stream enters communication terminal.
The present invention acquires the noise data of Different field, stores each noise data by noise signal acquisition device
Collected noise noise is carried out under various circumstances by noise output control module after the noise database of control machine to broadcast
It puts, is the various research low-voltage carrier communications in emulation experiment room to achieve the purpose that really to restore presence feature platform area noise
Noise jamming provides environmental condition and test platform.
Here is the further optimization and/or improvements to invention technology described above scheme:
It further include channel test module as shown in attached drawing 1,5, the channel test module includes sinusoidal signal generator and leads to
Believe terminal, the sinusoidal signal generator issues the test signal of assigned frequency and is sent to communication terminal, eventually according to communication
Whether can end detect the test signal of the assigned frequency issued, good with the communications status for testing communication channel.
As shown in attached drawing 3,4, signal output line is that D/A channel signal output all the way is converted at least eight road signals
Connecting line, for noise needed for providing test at least eight electric energy meter cabinets.
As shown in attached drawing 3,4, first order amplifier, second level amplifier model be FAY2000, the first order is put
Big device quantity is 1, and second level amplifier quantity is at least 8.
As needed, A be coupled device, B be coupled device, C be coupled device model be ZCAT3035-1330 coupling
Device, the quantity of the coupler are at least 24.
As needed, model ZCAT3035-1330, A/D the capture card model for acquiring coupler grinds magnificent PCI-1721.
The above technical characteristic constitutes highly preferred embodiment of the present invention, with stronger adaptability and best implementation effect
Fruit can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (6)
1. a kind of acquisition and play system of low-voltage carrier communication high-frequency interferencing signal, it is characterised in that acquired including noise signal
Device, emulation module, noise signal electrical cabinet and electric energy meter cabinet；
Noise signal acquisition device includes the A/D capture card for acquiring coupler and acquiring line noise signals, and A/D capture card will be adopted
Each noise-like signal of collection is sent to emulation module；
Emulation module is used to carry out each noise-like signal of acquisition to integrate the type of processing and abundant noise；
Noise signal electrical cabinet includes industrial personal computer, noise output control module and first order amplifier, and industrial personal computer receives emulation mould
Each noise-like signal is simultaneously centrally stored in industrial personal computer by each noise-like signal of block transmission, forms noise database, and control is each
Noise like output and broadcasting, noise output control module for transferring the area noise database Zhong Getai noise information, make an uproar by control
The output of the gain factor and amplitude, time-domain diagram, spectrogram of acoustical signal, first order amplifier for amplifying through noise for the first time
The amplitude of the noise signal of output control module processing output；
Electric energy meter cabinet includes that be coupled device, B of second level amplifier, A is coupled device and C is coupled device, first order amplifier and
It is connected between two-stage amplifier by signal output line, for amplifying noise signal again, A's second level amplifier is coupled
Device, B device, the C device that is coupled that is coupled are respectively used to prevent A phase, the power current on B phase and C phase power line to enter communication terminal.
2. the acquisition and play system of low-voltage carrier communication high-frequency interferencing signal according to claim 1, it is characterised in that
It further include channel test module, the channel test module includes sinusoidal signal generator and communication terminal, the sinusoidal letter
Can number generating device issues the test signal of assigned frequency and is sent to communication terminal, be detected and be issued according to communication terminal
The assigned frequency test signal, it is whether good with the communications status for testing communication channel.
3. the acquisition and play system of low-voltage carrier communication high-frequency interferencing signal according to claim 2, it is characterised in that
The signal output line is the connecting line that D/A channel signal output all the way is converted at least eight road signals, for extremely
Noise needed for few eight electric energy meter cabinets provide test.
4. the acquisition and play system of low-voltage carrier communication high-frequency interferencing signal according to any one of claims 1 to 3,
Be characterized in that first order amplifier, the model of second level amplifier is FAY2000, the first order amplifier quantity be 1,
Second level amplifier quantity is at least 8.
5. the acquisition and play system of low-voltage carrier communication high-frequency interferencing signal according to any one of claims 1 to 3,
Be characterized in that A be coupled device, B be coupled device, C be coupled device model be ZCAT3035-1330 coupler, the coupler
Quantity be at least 24.
6. the acquisition and play system of low-voltage carrier communication high-frequency interferencing signal according to any one of claims 1 to 3,
It is characterized in that model ZCAT3035-1330, A/D the capture card model of acquisition coupler grinds magnificent PCI-1721.
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| CN201910731315.6A CN110535489B (en) | 2019-08-08 | 2019-08-08 | Acquisition and playing system for low-voltage carrier communication high-frequency interference signals |
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| CN201910731315.6A CN110535489B (en) | 2019-08-08 | 2019-08-08 | Acquisition and playing system for low-voltage carrier communication high-frequency interference signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783633A (en) * | 2021-09-18 | 2021-12-10 | 广东电网有限责任公司 | Multi-band noise simulation device and method |
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Effective date of registration: 20201111 Address after: 830011 New District of Urumqi, the Xinjiang Uygur Autonomous Region (high tech Zone) 200 Hengda street, Changchun road. Applicant after: Marketing service center of State Grid Xinjiang Electric Power Co., Ltd. (capital intensive center, metering center) Applicant after: STATE GRID CORPORATION OF CHINA Address before: 830011 New District of Urumqi, the Xinjiang Uygur Autonomous Region (high tech Zone) 200 Hengda street, Changchun road. Applicant before: STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER Research Institute Applicant before: STATE GRID CORPORATION OF CHINA |
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