CN208297662U - A kind of tip pulse detection system - Google Patents
A kind of tip pulse detection system Download PDFInfo
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- CN208297662U CN208297662U CN201820966649.2U CN201820966649U CN208297662U CN 208297662 U CN208297662 U CN 208297662U CN 201820966649 U CN201820966649 U CN 201820966649U CN 208297662 U CN208297662 U CN 208297662U
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Abstract
Tip pulse detection system provided by the utility model, including photoelectric conversion module, analog module, digital circuit blocks, host computer and power supply interface module.Tip pulse detection system provided by the utility model has strong antijamming capability, compact, realizes the point discharge identification and orientation detection adjusted the distance in 0.5 meter of hemi-sphere range of detector.
Description
Technical field
The utility model relates to ultraviolet light photo sensor technical field, in particular to a kind of tip pulse detection system.
Background technique
Shelf depreciation is the phenomenon that high voltage electric field makes air ionization and discharges, and is the early stage sign of equipment fault.High-voltage electricity
It is hidden safely that the partial discharge phenomenon that apparatus insulated place occurs in Force system will cause equipment damage, the energy and economic loss, system
A variety of consequences such as trouble.Wherein, high-tension switch cabinet, ring network cabinet cable branch box and GIS device (gas-insulated combined electric equipment)
Etc. high-tension electricity equipment be the equipment of partial discharge phenomenon usually occur.Insulation position shelf depreciation can generate corrosive substance
Such as ozone and nitrogen oxides, nitric acid can be discharged under high- humility state, can accelerate the corrosion of insulated part, and then is enhanced part and put
The intensity of electricity.Therefore to the real-time monitoring of shelf depreciation, the security risk of high-tension electricity equipment can be found early, ensure electric power
The safety and steady of system is run.
Mainly have applied to the detection method of partial discharge monitoring at present: supercritical ultrasonics technology (AE), superfrequency method (UHF) with
And ultraviolet detection method.Supercritical ultrasonics technology is the ultrasonic pulse detected in shelf depreciation, can be realized shelf depreciation diagnosis and electric discharge
The accurate positionin in source.But supercritical ultrasonics technology will just be able to achieve the positioning to discharge position using multiple sensors composition array, and because
Acoustic Wave Propagation Characteristics, the influence vulnerable to mechanical oscillation.The high-frequency electromagnetic that the measurement object of superfrequency method generates when being shelf depreciation
Radiation.Application effect of the superfrequency method in GIS device is best, has been the detection technique generallyd use in the world to GIS device.
Influence of the superfrequency method superfrequency method vulnerable to other electromagnetic interference signals in environment, and it is at high cost.
The measurement object of uv detection method is the ultraviolet component of radiation spectrum in shelf depreciation.Relative to supercritical ultrasonics technology and spy
High-frequency method, ultraviolet monitoring method have principle it is simple and effective, not by environment electromagnetics interference, high sensitivity, the advantages such as can early diagnose.
The main detector for being applied to ultraviolet detection at present has: photomultiplier tube, Si-based photodetectors etc..Photomultiplier tube tool
There are higher sensitivity and fast response time.But the photomultiplier transit pipe volume of Vacuum Package is larger, vulnerable to electromagnetic interference, when work
Large power supply and cathode is needed to freeze.Silicon based opto-electronics sensor responds visible light wave range, can to ultraviolet band and insensitive
It is light-exposed to inhibit relatively low.
Utility model content
The utility model embodiment provides a kind of tip pulse detection system, solves shelf depreciation ultraviolet signal and adopts
The technical issues of collection, signal processing, Discharge pulse waveform show, discharge source direction deciding.
The utility model provides a kind of tip pulse detection system, including photoelectric conversion module, analog module, number
Circuit module, host computer and power supply interface module, wherein
The photoelectric conversion module is used to the collected optical signal of corona discharge being converted to electric signal, by the electric signal
Analog signal is converted to by I/V；
The analog module is used to carry out the analog signal multistage amplification, so that the analog signal meets mould
Number conversion needs；
The digital circuit blocks are used to carry out analog-to-digital conversion to the amplified analog signal and threshold filter obtains
Signal code stream is sent to the host computer to after multi channel signals progress data encoding by multi channel signals；
The host computer is used to carry out the signal code stream reading data, data frame fractionation, output waveform and the side of output
Position determines result.
As a kind of optional scheme, the photoelectric conversion module includes SiC silicon carbide Ultraviolet sensor and I/V conversion
Unit, the silicon carbide Ultraviolet sensor is used for the ultraviolet signal in acquisition shelf depreciation generation and generates electric signal, described
The electric signal is converted to analog signal output to analog module by I/V conversion module.
As a kind of optional scheme, the multistage is enlarged into second level amplification, and the analog module includes preceding storing
Big circuit and second amplifying circuit, the pre-amplification circuit are used to after carrying out preposition amplification to the analog signal export to institute
Second amplifying circuit is stated, the second amplifying circuit is used to after carrying out secondary amplification to analog signal export to the digital circuit
Module.
As a kind of optional scheme, the digital circuit blocks include A/D converting unit, threshold filter unit and number
According to coding Dispatching Unit, the A/D converting unit is used to carry out analog-to-digital conversion to the analog signal to obtain digital signal, described
Threshold filter unit is used to carry out threshold filter to the digital signal to obtain four-way signal, the data encoding Dispatching Unit
For carrying out data encoding to the four-way signal, and signal code stream is sent to by the host computer by serial ports.
As a kind of optional scheme, the host computer has an identification positioning software, and the identification positioning software is used for pair
Signal code stream decoding comprising pulse information, and be converted into waveform image and export in real time, it is defeated using detector different directions amplitude
Difference out determines the azimuth information in point discharge source and exports in real time.
It further include power module as a kind of optional scheme, for alternating current to be converted to operating voltage as system work
It is powered.
As a kind of optional scheme, the supply voltage of the power module includes ± 5V, 3.3V, 1.8V.
As a kind of optional scheme, the test surface of the detector include upper and lower, left and right, upper left, lower-left, upper right,
The orientation of bottom right eight.
As a kind of optional scheme, the central processing unit of the analog module uses FPGA module.
As can be seen from the above technical solutions, the utility model embodiment has the advantage that
Tip pulse detection system provided by the utility model, including photoelectric conversion module, analog module, number electricity
Road module, host computer and power supply interface module, wherein the photoelectric conversion module turns the collected optical signal of corona discharge
It is changed to electric signal, the electric signal is converted into analog signal by I/V；The analog module to the analog signal into
The multistage amplification of row, so that the analog signal meets analog-to-digital conversion needs；The digital circuit blocks are to the amplified mould
Quasi- signal carries out analog-to-digital conversion and threshold filter obtains multi channel signals, will letter after carrying out data encoding to the multi channel signals
Number stream is sent to the host computer；The host computer carries out reading data to the signal code stream, data frame is split, output wave
Shape simultaneously exports direction deciding as a result, not only completing the detection of point discharge, is able to record lower Discharge pulse waveform, moreover it is possible to pass through
Pulse amplitude determines discharge source orientation.With strong antijamming capability, compact, 0.5 meter of hemisphere model of detector of adjusting the distance is realized
Enclose interior point discharge identification and orientation detection.
Detailed description of the invention
Fig. 1 is the structural block diagram of the tip pulse detection system provided in the utility model embodiment；
Fig. 2 is the schematic diagram of detector test surface in the tip pulse detection system provided in the utility model embodiment；
Fig. 3 is the interfacial effect that positioning software is identified in the tip pulse detection system provided in the utility model embodiment
Figure.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
The specification and claims of the utility model and term " first " in above-mentioned attached drawing, " second ", " third ",
" 4th " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to illustrating herein or describing
Content other than sequence implement.In addition, term " includes " and " having " and their any deformation, it is intended that covering is not
Exclusive includes, for example, the process, method, system, product or equipment for containing a series of steps or units be not necessarily limited to it is clear
Step or unit those of is listed on ground, but is not clearly listed or for these process, methods, product or is set
Standby intrinsic other step or units.
As shown in connection with fig. 1, the utility model provides a kind of tip pulse detection system, including photoelectric conversion module, simulation
Circuit module, digital circuit blocks, host computer and power supply interface module, wherein the photoelectric conversion module is by corona discharge
Collected optical signal is converted to electric signal, and the electric signal is converted to analog signal by I/V；The analog module
Multistage amplification is carried out to the analog signal, so that the analog signal meets analog-to-digital conversion needs；The digital circuit blocks
Analog-to-digital conversion is carried out to the amplified analog signal and threshold filter obtains multi channel signals, to the multi channel signals into
Signal code stream is sent to the host computer after row data encoding；The host computer to the signal code stream carry out reading data,
Data frame fractionation, output waveform simultaneously export direction deciding as a result, not only completing the detection of point discharge, are able to record lower electric discharge
Impulse waveform, moreover it is possible to which discharge source orientation is determined by pulse amplitude.With strong antijamming capability, compact, realization is adjusted the distance
Point discharge identification and orientation detection in 0.5 meter of hemi-sphere range of detector.
As a kind of optional scheme, the photoelectric conversion module includes SiC silicon carbide Ultraviolet sensor and I/V conversion
Unit, I/V conversion is that signal code is converted to signal voltage, and the silicon carbide Ultraviolet sensor is used in acquisition shelf depreciation
The ultraviolet signal of generation simultaneously generates electric signal, and the electric signal is converted to analog signal output extremely by the I/V conversion module
Analog module, wide bandgap semiconductor materials forbidden bandwidth is big, responds ultraviolet band compared with high, sensor bulk is small, property
Stablize, quantum efficiency height, is the material more suitable for ultraviolet detection.SiC material compares other wide bandgap semiconductor materials, has
Higher thermal conductivity, sensor structure design are more flexible.SiC material forbidden bandwidth with higher (3-3.3eV), therefore its light
It is higher to compose cutoff frequency, additionally there is high heat conductance, the high advantages such as breakdown voltage, high electron mobility of coming personally.
In the present embodiment, multistage is enlarged into second level amplification, and the analog module includes pre-amplification circuit and second level
Amplifying circuit, the pre-amplification circuit export after carrying out preposition amplification to the analog signal to the second amplifying circuit,
The second amplifying circuit exports after carrying out secondary amplification to analog signal to the digital circuit blocks.
Digital circuit blocks include A/D converting unit, threshold filter unit and data encoding Dispatching Unit, A/D conversion
Unit uses high-precision adc, improves conversion accuracy, and the A/D converting unit carries out mould to the analog signal
Number is converted to digital signal, and the threshold filter unit carries out threshold filter to the digital signal and obtains four-way signal,
The data encoding Dispatching Unit carries out data encoding to the four-way signal, and signal code stream is sent to institute by serial ports
State host computer.
In conjunction with shown in Fig. 2 and 3, host computer has identification positioning software, identifies knowledge of the positioning software to corona discharge phenomenon
Not and the judgement in electric discharge orientation, the identification positioning software are converted into waveform to the signal code stream decoding comprising pulse information
Image exports in real time, the difference exported using detector different directions amplitude, and the azimuth information in judgement point discharge source is simultaneously real-time
Output, detector can acquire point discharge analog signal using ultraviolet detector, in the interface of identification positioning software, in order to
Facilitate expression, the test surface of the detector includes upper and lower, left and right, upper left, lower-left, upper right, the orientation of bottom right eight.
Tip pulse detection system further includes power module, is that system work carries out for alternating current to be converted to operating voltage
Power supply, power module are built-in with voltage conversion circuit, and the supply voltage of the power module includes ± 5V, 3.3V, 1.8V, ability
Domain those of ordinary skill can be not construed as limiting this with flexible choice.
As a kind of optional scheme, the central processing unit of the analog module uses FPGA module, FPGA module
Can it is fast using the speed of service, can parallel data processing altera corp FPGA, this is not construed as limiting.
Tip pulse detection system provided by the utility model realizes SiC base photoelectric sensor in shelf depreciation for the first time
Application in detection, so that detection system has low power reguirements, good compatibility, strong antijamming capability system compact etc. excellent
Point.Compare the existing shelf depreciation detection methods such as superfrequency method, supercritical ultrasonics technology, the corona discharge detection system energy based on SiC
Enough more at low cost, the more efficient detection and positioning for being accurately realized corona discharge.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
A kind of tip pulse detection system provided by the utility model is described in detail above, for this field
Those skilled in the art have and change in specific embodiments and applications based on the idea of the embodiment of the present invention
Become place, in conclusion the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of tip pulse detection system, which is characterized in that including photoelectric conversion module, analog module, digital circuit
Module, host computer and power supply interface module, wherein
The photoelectric conversion module is used to the collected optical signal of corona discharge being converted to electric signal, and the electric signal is passed through
I/V is converted to analog signal；
The analog module is used to carry out the analog signal multistage amplification, so that the analog signal meets modulus and turns
Change needs；
The digital circuit blocks are used to carry out analog-to-digital conversion to the amplified analog signal and threshold filter obtains multi-pass
Signal code stream is sent to the host computer to after multi channel signals progress data encoding by road signal；
The host computer is used to carry out reading data to the signal code stream, data frame is split, output waveform and exports orientation and sentences
Determine result.
2. tip pulse detection system according to claim 1, which is characterized in that the photoelectric conversion module includes SiC
Silicon carbide Ultraviolet sensor and I/V converting unit, what the silicon carbide Ultraviolet sensor was used to generate in acquisition shelf depreciation
Ultraviolet signal simultaneously generates electric signal, and the electric signal is converted to analog signal output to simulating electricity by the I/V conversion module
Road module.
3. tip pulse detection system according to claim 2, which is characterized in that the multistage is enlarged into second level amplification,
The analog module includes pre-amplification circuit and second amplifying circuit, and the pre-amplification circuit is used for the simulation
To the second amplifying circuit, the second amplifying circuit is used to carry out two to analog signal for output after signal carries out preposition amplification
It exports after secondary amplification to the digital circuit blocks.
4. tip pulse detection system according to claim 3, which is characterized in that the digital circuit blocks include A/D
Converting unit, threshold filter unit and data encoding Dispatching Unit, the A/D converting unit be used for the analog signal into
Row analog-to-digital conversion obtains digital signal, and the threshold filter unit is used to carry out threshold filter to the digital signal to obtain four-way
Road signal, the data encoding Dispatching Unit is used to carry out the four-way signal data encoding, and passes through serial ports for signal
Code stream is sent to the host computer.
5. tip pulse detection system according to claim 1, which is characterized in that the host computer has identification positioning soft
Part, the identification positioning software is used to decode the signal code stream comprising pulse information, and is converted into waveform image and exports in real time,
The difference exported using detector different directions amplitude is determined the azimuth information in point discharge source and exported in real time.
6. tip pulse detection system according to claim 1, which is characterized in that further include power module, be used for city
It is that system work is powered that electricity, which is converted to operating voltage,.
7. tip pulse detection system according to claim 6, which is characterized in that the supply voltage packet of the power module
Include ± 5V, 3.3V, 1.8V.
8. tip pulse detection system according to claim 5, which is characterized in that the test surface of the detector includes
Upper and lower, left and right, upper left, lower-left, upper right, the orientation of bottom right eight.
9. tip pulse detection system according to claim 1, which is characterized in that the centre of the analog module
It manages device and uses FPGA module.
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| CN201820966649.2U CN208297662U (en) | 2018-06-22 | 2018-06-22 | A kind of tip pulse detection system |
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| CN201820966649.2U CN208297662U (en) | 2018-06-22 | 2018-06-22 | A kind of tip pulse detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108896881A (en) * | 2018-06-22 | 2018-11-27 | 北京科益虹源光电技术有限公司 | A kind of tip pulse detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108896881A (en) * | 2018-06-22 | 2018-11-27 | 北京科益虹源光电技术有限公司 | A kind of tip pulse detection system |
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