CN209117629U - A kind of disc insulator defects detection positioning device based on supersonic guide-wave - Google Patents
A kind of disc insulator defects detection positioning device based on supersonic guide-wave Download PDFInfo
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- CN209117629U CN209117629U CN201821932644.4U CN201821932644U CN209117629U CN 209117629 U CN209117629 U CN 209117629U CN 201821932644 U CN201821932644 U CN 201821932644U CN 209117629 U CN209117629 U CN 209117629U
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- 239000012212 insulator Substances 0.000 title claims abstract description 62
- 230000007547 defect Effects 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000005086 pumping Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims abstract description 12
- 235000019687 Lamb Nutrition 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 32
- 230000005611 electricity Effects 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 101100540541 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) VOA1 gene Proteins 0.000 claims description 3
- 101100540540 Schizosaccharomyces pombe (strain 972 / ATCC 24843) big1 gene Proteins 0.000 claims description 3
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The disc insulator defects detection positioning device based on supersonic guide-wave that the utility model discloses a kind of, timing control unit connect the instruction for receiving host computer with host computer, pumping signal generating unit connect the pumping signal for generating required parameter with timing control unit, power amplifier module is connect for pumping signal to be filtered out direct current biasing and is amplified with pumping signal generating unit, several excitation channels connect with power amplifier module and are arranged on the upside of disc insulator for inspiring Lamb wave, several receiving channels are arranged on the downside of disc insulator for receiving Lamb wave and being converted into electric signal, pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo signal processing unit is connect for detection filter with pre-amplifying module and timing control unit.The utility model judges the position of defect, realizes the on-line checking of disc insulator while detecting disc insulator with the presence or absence of defect.
Description
Technical field
The utility model relates to a kind of defects of insulator to detect positioning device, especially a kind of benzvalene form based on supersonic guide-wave
Defects of insulator detects positioning device.
Background technique
Power transmission network construction is the important directions of national strategy development, develops UHV transmission and has been included in China long-term
Development plan, it will important influence is generated to the following power transmission and transformation field.China has built very long extra-high voltage and has handed at present
Flow transmission line of electricity.Switchgear selected by UHV transmission line at present, most of is gas-insulated stacked switch equipment.
Since the influence of, high reliablity small with occupied area, service life length, climate condition is compared with small, maintenance work is few, device knot
Structure is compact and the characteristics of being easily installed, therefore is suitable for large-scale power hinge, in region with a varied topography or narrow topography
It is also convenient for applying.It is as the important equipment run in electric system, once the normal of electric system will be will affect by breaking down
Power supply causes huge economic loss and undesirable social influence.Disc insulator is as core building block, in extra-high piezoelectricity
It will necessarily be widely applied in net construction, therefore high requirement is proposed to its safe and stable operation.Currently, to disc insulator
Detection is carried out to have a very big significance.
Conventional mainly includes chemical measure, optical detection, pulse for the non-destructive testing technology of disc insulator
Current method, superfrequency method etc..These lossless detection methods theoretically all have feasibility for the defects detection of disc insulator,
However in production application, every kind of method has a respective limitation, for example chemical measure analytical cycle is longer, needs several
Hour even several days；Optical detection higher cost；Pulse current method is not suitable for complicated electromagnetic environment；Superfrequency method cannot
Carry out quantitative detection.Therefore, it researches and develops and a kind of to be simple and efficient, low cost, can be realized defects detection is carried out to disc insulator
System becomes one of the hot spot of current research.
Guided wave makes it suitable for disc insulator defect to the advantages that weld defect control, single-point-excitation, small, energy is big decaying with it
Detect work.However China is less for the research of disc insulator supersonic guide-wave non-destructive testing technology at present.Shandong University
Tang Hemei is proposed in " research of the GIS partial discharge typical defect type flash-over characteristic based on superfrequency method " using special
Then the method that high-frequency method carries out the fault detection of disc insulator defect is using main problem existing for superfrequency method: outer
It is low to set formula transducer sensitivity, and will receive the electromagnetic interference influences such as ambient enviroment mobile phone signal, it is necessary to take effective shielding
Measure；In addition, this method can not achieve quantitative detection, it is unable to measure the size of shelf depreciation Apparent discharge magnitude, thus can not
Judge defect severity, is the biggest obstacle of its application.Existing technology works for disc insulator defect fault detection,
There is no it is a kind of rapidly and efficiently, scientific accurate detection method and system.
Utility model content
The disc insulator defect inspection based on supersonic guide-wave that the technical problem to be solved by the utility model is to provide a kind of
Positioning device is surveyed, high sensitivity, decaying is small, can position.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:
A kind of disc insulator defects detection positioning device based on supersonic guide-wave, it is characterised in that: include timing control
Unit, pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, pre-amplifying module
With several receiving channels, timing control unit connect the instruction for receiving host computer, pumping signal generating unit with host computer
The pumping signal for generating required parameter is connect with timing control unit, power amplifier module and pumping signal generating unit connect
It connects for pumping signal to be filtered out direct current biasing and is amplified, several excitation channels connect with power amplifier module and benzvalene form is arranged in
For inspiring Lamb wave on the upside of insulator, several receiving channels are arranged on the downside of disc insulator for receiving Lamb wave and turning
Electric signal is turned to, pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo signal processing list
Member is connect for detection filter with pre-amplifying module and timing control unit.
Further, several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave excitations pass
Sensor is uniformly distributed at the path on disc insulator convex surface.
Further, several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-waves receive
Sensor is uniformly distributed at the major diameter on disc insulator convex surface.
Further, the supersonic guide-wave receiving sensor is piezo ultrasound transducers, electromagnetic ultrasonic transducer or monocrystalline
Probe.
Further, the pumping signal generating unit includes TMS320VC2812 chip U1 and AD9854 chip U2, U1
D0-D7 foot successively connect respectively with the D0-D7 foot of U2, the A0-A5 foot of U1, which is distinguished, successively to be connect with the A0-A5 foot of U2, U1's
WRB foot successively connect with the WRB foot of U2 respectively, the CLKIN foot of U2 with have a source crystal oscillator connection, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot exports SinOut1, SinOut2, CosOut1, CosOut2 signal respectively, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot connects be grounded after one group of in parallel capacitor and resistance respectively.
Further, the power amplifier module includes 1 foot connection one end resistance R1 and the capacitor of AD830 chip U3, U3
The one end C1, the capacitor C1 other end input SinOut1 signal, and 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, capacitor C2 are another
One end inputs SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and electricity
Hinder the one end R4, the resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, electricity
R6 other end ground connection is hindered, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 of U3 is another
It holds and exports Out signal.
Further, the pre-amplifying module includes that 1 foot of AD830 chip U4, U4 input VX1 signal, and 2 feet of U4 are defeated
Enter VX2 signal, 8 feet of U4 connect positive pole, 3 feet connection one end resistance R7 of U4 and the one end resistance R8, the resistance R7 other end
It is grounded with the resistance R8 other end, 5 feet of 4 feet connection one end resistance R9 of U4 and the one end resistance R10, U4 connect power cathode, U4
The 7 feet connection resistance R9 other end, the one end resistance R11 and the one end capacitor C3, it is simultaneously defeated that the capacitor C3 other end connects the one end resistance R12
VOA1 signal out, the resistance R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
Further, the echo signal processing unit include AD835 chip U5, U5 7 feet connection the one end resistance R13 and
The one end capacitor C4, the capacitor C4 other end input SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and capacitor
The one end C5, the capacitor C5 other end input SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection,
1 foot of U5 inputs Uin signal, the 2 feet ground connection of U5, and 3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and electricity
It hinders the one end R16, the 5 feet connection resistance R15 other end of U5 and the one end resistance R17 and exports Ux or Uy signal, the resistance R16 other end
It is grounded with the resistance R17 other end, 6 feet of U5 connect positive pole.
The utility model compared with prior art, has the following advantages that and effect: the utility model passes through supersonic guide-wave and visits
Hurt technology, can judge the position of defect while detecting disc insulator with the presence or absence of defect, realize disc insulator
On-line checking, and analyze and improve for the causes of defects of disc insulator and data basis is provided, at the same its with high sensitivity,
Decay small, orientable advantage, convenient to detect to the variation of disc insulator geometry and physical characteristic.
Detailed description of the invention
Fig. 1 is a kind of signal of disc insulator defects detection positioning device based on supersonic guide-wave of the utility model
Figure.
Fig. 2 is the circuit diagram of the pumping signal generating unit of the utility model.
Fig. 3 is the circuit diagram of the power amplifier module of the utility model.
Fig. 4 is the circuit diagram of the pre-amplifying module of the utility model.
Fig. 5 is the circuit diagram of the echo signal processing unit of the utility model.
Fig. 6 is the arrangement schematic diagram and disc insulator surface subregion of the supersonic guide-wave sensor array of the utility model
Schematic diagram.
Specific embodiment
Below by embodiment, the utility model is described in further detail, and following embodiment is to the utility model
Explanation and the utility model is not limited to following embodiment.
As shown in Figure 1, a kind of disc insulator defects detection positioning device based on supersonic guide-wave of the utility model, packet
Containing timing control unit, pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, preceding
Amplification module and several receiving channels are set, timing control unit connect the instruction for receiving host computer, excitation letter with host computer
Number generating unit connect the pumping signal for generating required parameter, power amplifier module and pumping signal with timing control unit
Generating unit is connected for pumping signal to be filtered out direct current biasing and is amplified, and several excitation channels are connect simultaneously with power amplifier module
It is arranged on the upside of disc insulator for inspiring Lamb wave, several receiving channels are arranged on the downside of disc insulator for receiving
Lamb wave is simultaneously converted into electric signal, and pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo
Signal processing unit is connect for detection filter with pre-amplifying module and timing control unit.
Several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave stimulus sensors are uniformly distributed in
At the path on disc insulator convex surface.Several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-waves connect
Sensor is received to be uniformly distributed at the major diameter on disc insulator convex surface.Supersonic guide-wave receiving sensor be piezo ultrasound transducers,
Electromagnetic ultrasonic transducer or single crystal probe.
As shown in Fig. 2, pumping signal generating unit includes TMS320VC2812 chip U1 and AD9854 chip U2, U1's
D0-D7 foot is successively connect with the D0-D7 foot of U2 respectively, and the A0-A5 foot of U1 is successively connect with the A0-A5 foot of U2 respectively, the WRB of U1
Foot successively connect with the WRB foot of U2 respectively, the CLKIN foot of U2 with have a source crystal oscillator connection, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot exports SinOut1, SinOut2, CosOut1, CosOut2 signal respectively, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot connects be grounded after one group of in parallel capacitor and resistance respectively.
As shown in figure 3, power amplifier module includes 1 foot connection one end resistance R1 and the capacitor C1 mono- of AD830 chip U3, U3
End, the capacitor C1 other end input SinOut1 signal, 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, the capacitor C2 other end
Input SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and resistance R4
One end, the resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, resistance R6
Other end ground connection, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 other end of U3 is simultaneously
Export Out signal.
As shown in figure 4,1 foot that pre-amplifying module includes AD830 chip U4, U4 inputs VX1 signal, the 2 feet input of U4
VX2 signal, 8 feet of U4 connect positive pole, 3 feet connection one end resistance R7 of U4 and the one end resistance R8, the resistance R7 other end and
Resistance R8 other end ground connection, 4 feet connection one end resistance R9 of U4 and the one end resistance R10, the 5 feet connection power cathode of U4, the 7 of U4
Foot connects the resistance R9 other end, the one end resistance R11 and the one end capacitor C3, and capacitor C3 other end connection one end resistance R12 simultaneously exports
VOA1 signal, the resistance R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
As shown in figure 5, echo signal processing unit includes 7 feet connection one end resistance R13 and the electricity of AD835 chip U5, U5
Hold the one end C4, the capacitor C4 other end inputs SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and capacitor C5
One end, the capacitor C5 other end input SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection, U5
1 foot input Uin signal, the 2 feet ground connection of U5,3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and resistance
The one end R16, U5 5 feet connection the resistance R15 other end and the one end resistance R17 simultaneously export Ux or Uy signal, the resistance R16 other end and
6 feet of resistance R17 other end ground connection, U5 connect positive pole.
The working principle of the utility model is, host computer issues instruction, by DSP control unit by signal parameter control word
It is written in the TMS320F2812 cake core of pumping signal generating unit, clock arrives when updated, and pumping signal generating unit generates
The pumping signal of required parameter, after power amplifier module filters out direct current biasing and amplifies while 4 supersonic guide-waves of input motivate
Sensor inspires Lamb wave in disc insulator, after Lamb wave is propagated in disc insulator, then simultaneously by 8 ultrasounds
Guided wave receiving sensor receives and is converted into electric signal, through being amplified using the pre-amplifying module of broadband differential amplifier AD830
Afterwards, then by echo signal processing unit detection filter processing is carried out, final detection letter is obtained after DSP control unit is modulated
Number and return to host computer.
A kind of detection localization method of the disc insulator defects detection positioning device based on supersonic guide-wave includes following step
It is rapid:
Step 1: detecting the disc insulator under health status, by 12 collected signals of receiving sensor
As reference signal, reference signal first is acquired on the disc insulator with healthy structure, as shown in fig. 6, needing when experiment
First with epoxy glue 4 at 16 supersonic guide-wave sensors of the convex side of disc insulator coupling, small-and-middle diameter, for swashing for guided wave
It sends out, 12 at major diameter, the reception for guided wave.4 supersonic guide-wave actuated sensors inspire in disc insulator simultaneously
Lamb wave, 12 supersonic guide-wave receiving sensors distinguish receives echo-signal, and as reference signal, extract 12 roadbeds standard respectively
The peak value of first wave packet of signal, and it is denoted as A1、A2、…、A12；
Step 2: when carrying out on-line checking to practical disc insulator, by the position of supersonic guide-wave sensor by basin
Formula insulator is uniformly divided into 12 fan-shaped regions, and 12 receiving sensors are located at the axial location in each region, to any
Disc insulator is detected, and is obtained 12 tunnels and is received signal, is extracted 12 tunnels respectively and is received the peak value of first wave packet of signal, and remembers
For A1 ’、 A2 ’、…、 A12 ’；
Step 3: 12 tunnels are calculated separately and receive attenuation rate of the signal relative to reference signal:
η1=(A1-A1 ’)/A1
η2=(A2-A2 ’)/A2
...
η12=(A12-A12 ’)/A12
Step 4: certain is all the way if it exists or the attenuation rate of multiple signals is more than secure threshold S, then determines the disc insulator
Existing defects.
Disc insulator is uniformly divided into 12 fan-shaped regions, 12 receiving sensors are located at the axis in each region
Position compares the size of 12 road receiving signal attenuation rates, and the region where the maximum channel of attenuation rate is the position where defect
It sets.
The utility model can detect disc insulator with the presence or absence of the same of defect by ultrasonic guide wave flaw detection technology
When, judge the position of defect, realizes the on-line checking of disc insulator, and for the analysis of the causes of defects of disc insulator and improve
Data basis is provided, while it has the advantages that high sensitivity, decaying are small, orientable, it is convenient to disc insulator geometry and object
The variation of reason characteristic is detected.
Above content is only illustrate to examples for clearly illustrating the present invention described in this specification.The utility model
Person of ordinary skill in the field can do various modifications or supplement to described specific embodiment or use similar side
Formula substitution, content without departing from the utility model specification or beyond the scope defined by this claim should all
Belong to the protection scope of the utility model.
Claims (8)
1. a kind of disc insulator defects detection positioning device based on supersonic guide-wave, it is characterised in that: include timing control list
Member, pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, pre-amplifying module and
Several receiving channels, timing control unit connect the instruction for receiving host computer with host computer, pumping signal generating unit with
Timing control unit connects the pumping signal for generating required parameter, and power amplifier module is connect with pumping signal generating unit
For pumping signal to be filtered out direct current biasing and is amplified, several excitation channels are connect with power amplifier module and that benzvalene form is arranged in is exhausted
For inspiring Lamb wave on the upside of edge, several receiving channels are arranged on the downside of disc insulator for receiving Lamb wave and converting
For electric signal, pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo signal processing unit
It is connect with pre-amplifying module and timing control unit for detection filter.
2. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave stimulus sensors are uniformly distributed
At the path on disc insulator convex surface.
3. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-wave receiving sensors are uniformly divided
It is distributed at the major diameter on disc insulator convex surface.
4. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 3, feature
Be: the supersonic guide-wave receiving sensor is piezo ultrasound transducers, electromagnetic ultrasonic transducer or single crystal probe.
5. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the pumping signal generating unit includes the D0-D7 foot difference of TMS320VC2812 chip U1 and AD9854 chip U2, U1
It is successively connect with the D0-D7 foot of U2, the A0-A5 foot of U1 is successively connect with the A0-A5 foot of U2 respectively, and the WRB foot difference of U1 is successively
It is connect with the WRB foot of U2, the CLKIN foot of U2 and has a source crystal oscillator connection, IOUT1, OUT1B, IOUT2, IOUT2B foot difference of U2
SinOut1, SinOut2, CosOut1, CosOut2 signal are exported, IOUT1, OUT1B, IOUT2, IOUT2B foot of U2 is gone here and there respectively
It is grounded after joining one group of capacitor and resistance in parallel.
6. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the power amplifier module includes 1 foot connection one end resistance R1 and the one end capacitor C1 of AD830 chip U3, U3, capacitor C1
The other end inputs SinOut1 signal, 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, the input of the capacitor C2 other end
SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and the one end resistance R4,
The resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, the resistance R6 other end
Ground connection, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 other end of U3 simultaneously exports Out
Signal.
7. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the pre-amplifying module includes the 1 foot input VX1 signal of AD830 chip U4, U4, and 2 feet of U4 input VX2 signal, U4
8 feet connect positive pole, U4 3 feet connection the one end resistance R7 and the one end resistance R8, the resistance R7 other end and resistance R8 it is another
End ground connection, 4 feet connection one end resistance R9 of U4 and the one end resistance R10,5 feet of U4 connect power cathode, and 7 feet of U4 connect resistance
The R9 other end, the one end resistance R11 and the one end capacitor C3, capacitor C3 other end connection one end resistance R12 simultaneously export VOA1 signal, electricity
Hinder the R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
8. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the echo signal processing unit includes 7 feet connection one end resistance R13 and the one end capacitor C4 of AD835 chip U5, U5,
The capacitor C4 other end inputs SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and the one end capacitor C5, capacitor
The C5 other end inputs SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection, the 1 foot input of U5
Uin signal, the 2 feet ground connection of U5,3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and the one end resistance R16,
The 5 feet connection resistance R15 other end of U5 and the one end resistance R17 simultaneously export Ux or Uy signal, the resistance R16 other end and resistance R17
6 feet of other end ground connection, U5 connect positive pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821932644.4U CN209117629U (en) | 2018-11-22 | 2018-11-22 | A kind of disc insulator defects detection positioning device based on supersonic guide-wave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821932644.4U CN209117629U (en) | 2018-11-22 | 2018-11-22 | A kind of disc insulator defects detection positioning device based on supersonic guide-wave |
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| CN209117629U true CN209117629U (en) | 2019-07-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531233A (en) * | 2019-09-25 | 2019-12-03 | 国网陕西省电力公司电力科学研究院 | GIS disc insulator surface state detection device and method based on ultrasonic wave injection |
| CN111426918A (en) * | 2020-04-08 | 2020-07-17 | 国网山西省电力公司电力科学研究院 | Non-contact basin-type insulator detection device based on laser ultrasound |
-
2018
- 2018-11-22 CN CN201821932644.4U patent/CN209117629U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531233A (en) * | 2019-09-25 | 2019-12-03 | 国网陕西省电力公司电力科学研究院 | GIS disc insulator surface state detection device and method based on ultrasonic wave injection |
| CN111426918A (en) * | 2020-04-08 | 2020-07-17 | 国网山西省电力公司电力科学研究院 | Non-contact basin-type insulator detection device based on laser ultrasound |
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