CN106093730A - Intelligence type local-discharge ultrasonic wave sensor and method of work thereof - Google Patents
Intelligence type local-discharge ultrasonic wave sensor and method of work thereof Download PDFInfo
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- CN106093730A CN106093730A CN201610598561.5A CN201610598561A CN106093730A CN 106093730 A CN106093730 A CN 106093730A CN 201610598561 A CN201610598561 A CN 201610598561A CN 106093730 A CN106093730 A CN 106093730A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000006698 induction Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 8
- 230000002085 persistent effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Intelligence type local-discharge ultrasonic wave sensor and method of work thereof, relate to a kind of ultrasonic sensor and method of work thereof.At present, the supporting ultrasonic sensor of tester is put in live detection office, and on-the-spot capacity of resisting disturbance is weak, and field wiring is inconvenient.The present invention includes: ultrasonic signal induction module；Cable electricity-fetching module；Gain calibration module；Gain demodulation module；Gain control module；Channel automatically selects module；State display module.In the technical program, without independent cable, achieve a coaxial cable transmission signal and power supply is powered, without setting accumulator, easy to use, field wiring is convenient, and backstage can be program-controlled to the gain of intelligence type local-discharge ultrasonic wave sensor, in the case of having feed, intelligence type local-discharge ultrasonic wave sensor is just played a game in source and is put ultrasonic signal and filter and amplified, the capacity of resisting disturbance at raising scene and sensitivity.
Description
Technical field
The present invention relates to a kind of ultrasonic sensor and method of work thereof, especially intelligence type local-discharge ultrasonic wave sensor and
Method of work.
Background technology
At present, live detection office puts the supporting ultrasonic sensor of tester and divides passive and active two big classes, passive ultrasound wave
Sensor core is piezoelectric chip, and piezoelectric chip can be converted to ultrasonic mechanical wave the voltage signal output of correspondence.Passive ultrasonic
Wave sensor is original mechanical wave to be converted to the signal of telecommunication, and without any filter and amplification function, on-the-spot capacity of resisting disturbance is weak.Have
Ultrasound source sensor divides two kinds: one: uses and carries lithium battery power supply, and in needing before using to ensure sensor, lithium battery has electricity, makes
With inconvenience.Two: using power supply adaptor to power, need to individually draw a power line during on-the-spot test, field wiring is inconvenient.And
Active sensor, it is necessary to have power supply, otherwise cannot work.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is to carry out prior art improving and improving,
Intelligence type local-discharge ultrasonic wave sensor and method of work thereof are provided, to reach easy to use, reduce the purpose of cost.To this end, this
Bright take techniques below scheme.
Intelligence type local-discharge ultrasonic wave sensor, including: ultrasonic signal induction module, for ultrasonic mechanical wave is converted to voltage
Signal；
Cable electricity-fetching module, by power taking inductance from the coaxial cable power taking of the connection with main frame；
Gain calibration module, for when described sensor is connected with background host computer, defeated according to the background host computer circulation collected
The highest-gain voltage and the least gain voltage that go out go calibration-gain；
Gain demodulation module, for the feed voltage of Real-time Collection main frame coaxial cable, calculates corresponding gain according to magnitude of voltage；
Gain control module, the gain demodulating out according to gain demodulation module goes to control ultrasonic amplifier magnification ratio；
Channel automatically selects module, whether has feed automatic selecting signal transmission path according to main frame；Ultrasonic letter when without feed
Number time, background host computer is directly defeated by the output of ultrasonic signal induction module；When feed voltage, ultrasonic signal induction module is defeated
Go out and be defeated by background host computer again after filtering and amplifying；
State display module, is used for having displayed whether feed, the real work gain of sensor when having feed.
In the technical program, it is not necessary to independent cable, it is achieved that a coaxial cable transmission signal and power supply are powered, it is not necessary to set storage
Battery, easy to use, field wiring is convenient.And backstage can be program-controlled to the gain of intelligence type local-discharge ultrasonic wave sensor.?
In the case of having feed, intelligence type local-discharge ultrasonic wave sensor is just played a game in source and is put ultrasonic signal and filtered and amplified,
Improve on-the-spot capacity of resisting disturbance and sensitivity.
As improving further and supplementing technique scheme, present invention additionally comprises following additional technical feature.
Described channel automatically selects module and includes that the first channel automatically selects module, second channel automatically selects module,
Described ultrasonic signal induction module outfan automatically selects module, filtration module, amplification module, the second letter by the first channel
Road automatically selects module and is connected with ultrasonic signal output interface；Or ultrasonic signal induction module outfan is by the first channel certainly
Dynamic selection module automatically selects module with cable with second channel and is connected.
Described cable electricity-fetching module is located at ultrasonic signal output interface end；Cable electricity-fetching module outfan directly and increases
Benefit demodulation module is connected, or is connected by gain calibration module, gain calibration module outfan and gain control module input
Being connected, described gain control module outfan is connected with amplification module to control gain.
Described ultrasonic signal induction module includes piezoelectric chip, by piezoelectric chip, ultrasonic mechanical wave is converted to voltage
Signal.
Described gain calibration module, gain demodulation module, gain control module are located at a single-chip microcomputer.
Described channel automatically selects module and includes relay, realizes cutting of transmission path by the power on/off of relay
Change.
Described state display module includes light-emitting diode display.
The method of work of intelligence type local-discharge ultrasonic wave sensor, it is characterised in that comprise the following steps:
1) Host Detection and the connection status of intelligence type local-discharge ultrasonic wave sensor, connect at intelligence type local-discharge ultrasonic wave sensor and main frame
Connecing in a flash, electric current changes, and the current detecting that background host computer is consumed by detection intelligence type local-discharge ultrasonic wave sensor judges
Sensor connects；
2) when background host computer detects that intelligence type local-discharge ultrasonic wave sensor connects, then circulate and export maximum on coax
Gain voltage and least gain voltage, persistently export repeatedly, distributes gain voltage and least gain voltage, and background host computer continues defeated
Go out gain voltage to be arranged；
3), after intelligence type local-discharge ultrasonic wave sensor powers on, Single-chip Controlling relay disconnects the output of ultrasonic signal induction module,
Cable electricity-fetching module power taking, record AD gathers the feed voltage of coaxial cable, and the collection persistent period exceedes background host computer and persistently sends out
Send gain voltage and the time of least gain voltage；
4) the gain calibration module of single-chip microcomputer is according to the feed voltage of record, finds voltage max and minimum that leading portion collects
Value, and as the maximum gain magnitude of voltage corresponding with least gain, and result is input to gain demodulation module；
5) the gain calibration module of single-chip microcomputer is according to the feed voltage of record, and the average voltage that post-calculation segments collects, by it
It is input to gain demodulation module；
6) gain demodulation module is according to voltage max, minima, and meansigma methods calculates background host computer and wants the preamplifier gain of configuration；
7) gain control module removes to configure ultrasonic amplifier according to the gain that gain demodulation module demodulates out, configuration correspondence
Gain；
8) if gain changes, then feed is actively removed and the most again feeds by backstage, and whole system starts to perform from step 1)；
9) if background host computer cannot feed, then the channel of intelligence type local-discharge ultrasonic wave sensor automatically selects module by piezoelectric chip
Output is directly connected with intelligence sensor output, and now intelligence sensor works with passive sensor pattern.
In step 3) in, single-chip microcomputer disconnects the output of piezoelectric chip and disconnects ultrasonic signal sensing mould by controlling relay
The output of block.
In step 2) in, background host computer circulation output maximum gain voltage and least gain voltage, persistently output 8 times, often
Secondary persistent period 100ms；In step 3), the collection persistent period is 1000ms；In step 4), before gain calibration module takes
Voltage max that 800ms collects and minima；In step 5), the electricity that after the calculating of gain calibration module, 200ms collects
Flatten average.
Beneficial effect: the technical program is achieving intelligence type local-discharge ultrasonic wave sensor, it is not necessary to independent cable, it is achieved that
Piece coaxial cable transmission signal and power supply are powered, and backstage can journey to the gain of intelligence type local-discharge ultrasonic wave sensor
Control.In the case of having feed, intelligence type local-discharge ultrasonic wave sensor source just play a game put ultrasonic signal carried out filter and and
It is exaggerated, substantially increases the anti-interference of signal.In the case of backstage cannot feed, intelligence type local-discharge ultrasonic wave sensor with
Bypass filter and amplifier, work with passive mode.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is workflow diagram of the present invention.
In figure: 1-ultrasonic signal induction module；2-ultrasonic signal output interface；3-channel automatically selects module；4-filters
Mode block；5-amplification module.
Detailed description of the invention
Below in conjunction with Figure of description, technical scheme is described in further detail.
As it is shown in figure 1, the present invention includes:
Ultrasonic signal induction module 1, for being converted to voltage signal by ultrasonic mechanical wave；
Cable electricity-fetching module, by power taking inductance from the coaxial cable power taking of the connection with main frame；
Gain calibration module, for when described sensor is connected with background host computer, defeated according to the background host computer circulation collected
The highest-gain voltage and the least gain voltage that go out go calibration-gain；
Gain demodulation module, for the feed voltage of Real-time Collection main frame coaxial cable, calculates corresponding gain according to magnitude of voltage；
Gain control module, the gain demodulating out according to gain demodulation module goes to control ultrasonic amplifier magnification ratio；
Channel automatically selects module 3, whether has feed automatic selecting signal transmission path according to main frame；Ultrasonic letter when without feed
Number time, background host computer is directly defeated by the output of ultrasonic signal induction module 1；The ultrasonic signal induction module 1 when feed voltage
Export and be defeated by background host computer again after filtering and amplifying；
State display module, is used for having displayed whether feed, the real work gain of sensor when having feed.
Ultrasonic signal induction module 1 is responsible for ultrasonic mechanical wave to be converted to voltage signal, and cable electricity-fetching module passes through power taking
Inductance is from the coaxial cable power taking of the connection with main frame.Background host computer has once detected intelligence type local-discharge ultrasonic wave sensor even
Connect, then can circulate output maximum gain voltage and least gain voltage.Gain calibration module is according to the highest-gain electricity collected
Pressure and least gain voltage go calibration-gain.The feed voltage of gain demodulation module Real-time Collection main frame coaxial cable, according to electricity
Pressure value calculates corresponding gain.Gain control module goes to control ultrasonic amplifier according to the gain that gain demodulation module demodulates out
Amplification, channel automatically selects whether module 3 has feed automatic selecting signal transmission path according to main frame, without ultrasonic during feed
Background host computer is directly defeated by the output of induction of signal module 1, and when having feed voltage, the output of ultrasonic signal induction module 1 is through filtering
Background host computer it is defeated by again after the amplification of sum.State display module has displayed whether feed with LED in real time, sensor when having feed
Real work gain.
Wherein, described channel automatically selects module 3 and includes that the first channel automatically selects module 3, second channel selects automatically
Selecting module 3, described ultrasonic signal induction module 1 outfan is automatically selected module 3, filtration module 4 by the first channel, is amplified
Module 5, second channel automatically select module 3 and are connected with ultrasonic signal output interface 2；Or ultrasonic signal induction module 1 exports
Hold and automatically select module 3 by the first channel and automatically select module 3 with cable with second channel and be connected.
Described cable electricity-fetching module is located at ultrasonic signal output interface 2 end；Cable electricity-fetching module outfan directly with
Gain demodulation module is connected, or is connected by gain calibration module, and gain calibration module outfan inputs with gain control module
End is connected, and described gain control module outfan is connected to control gain with amplification module 5.
In the technical program, ultrasonic signal induction module 1 includes piezoelectric chip, by piezoelectric chip by ultrasonic mechanical wave
Be converted to voltage signal.
For convenience of controlling, reducing cost, described gain calibration module, gain demodulation module, gain control module are located at
One single-chip microcomputer.
For realizing the reliable control of channel, described channel automatically selects module 3 and includes relay, leading to by relay
Power-off realizes the switching in transmission path.
For convenience of the inquiry of duty, described state display module includes light-emitting diode display.
As in figure 2 it is shown, intelligence type local-discharge ultrasonic wave sensor method of work, comprise the following steps:
1) just connecting in a flash with background host computer, the electric current that background host computer is consumed by detection intelligence type local-discharge ultrasonic wave sensor is examined
Measure sensor to connect；
2) background host computer detects that intelligence type local-discharge ultrasonic wave sensor just connects, then circulate and export maximum gain on coax
Voltage and least gain voltage, persistently output 8 times, each persistent period 100ms, distribute gain voltage and least gain voltage,
Background host computer persistently exports gain voltage to be arranged；
3), after intelligence type local-discharge ultrasonic wave sensor powers on, Single-chip Controlling relay will input and output disconnects, and start at once
AD gathers feed voltage the record of coaxial cable, gathers persistent period 1000ms；
4) single-chip microcomputer on intelligence type local-discharge ultrasonic wave sensor finds the voltage max and minima that front 800ms collects, and
As the magnitude of voltage that maximum gain is corresponding with least gain；And result is input to gain demodulation module；
5) single-chip microcomputer on intelligence type local-discharge ultrasonic wave sensor calculates the average voltage that rear 200ms collects, and is entered into
Gain demodulation module；
6) intelligence type local-discharge ultrasonic wave sensor gain demodulation module is according to voltage max, minima, and meansigma methods calculates backstage master
The preamplifier gain of configuration wanted by machine；
7) intelligence type local-discharge ultrasonic wave sensor gain control module goes configuration super according to the gain that gain demodulation module demodulates out
Acoustic amplifier, the gain that configuration is corresponding；
8) if gain changes, then feed is removed and is the most again fed by backstage, and whole system is from 1) start to perform；
9) if background host computer cannot feed, then the channel of intelligence type local-discharge ultrasonic wave sensor automatically selects module 3 by piezoelectricity
Wafer output is directly connected with intelligence sensor output, and now intelligence sensor works with passive sensor pattern.
Figure 1 above, the intelligent type local-discharge ultrasonic wave sensor shown in 2 and method of work thereof are the specific embodiments of the present invention,
Embody substantive distinguishing features of the present invention and progress, under the enlightenment of the present invention, it can have been entered according to actual use needs
The equivalent modifications of the aspects such as row shape, structure, all at the row of protection domain of this programme.
Claims (10)
1. intelligence type local-discharge ultrasonic wave sensor, it is characterised in that including:
Ultrasonic signal induction module (1), for being converted to voltage signal by ultrasonic mechanical wave；
Cable electricity-fetching module, by power taking inductance from the coaxial cable power taking of the connection with main frame；
Gain calibration module, for when described sensor is connected with background host computer, defeated according to the background host computer circulation collected
The highest-gain voltage and the least gain voltage that go out go calibration-gain；
Gain demodulation module, for the feed voltage of Real-time Collection main frame coaxial cable, calculates corresponding gain according to magnitude of voltage；
Gain control module, the gain demodulating out according to gain demodulation module goes to control ultrasonic amplifier magnification ratio；
Channel automatically selects module (3), whether has feed automatic selecting signal transmission path according to main frame；When without feed time ultrasonic
During signal, background host computer is directly defeated by the output of ultrasonic signal induction module (1)；The ultrasonic signal induction module when feed voltage
(1) output is defeated by background host computer after filtering and amplifying again；
State display module, is used for having displayed whether feed, the real work gain of sensor when having feed.
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 1, it is characterised in that: described channel automatically selects mould
Block (3) includes that the first channel automatically selects module (3), second channel automatically selects module (3), described ultrasonic signal sensing mould
Block (1) outfan automatically selects module (3) by the first channel, filtration module (4), amplification module (5), second channel select automatically
Select module (3) to be connected with ultrasonic signal output interface (2)；Or ultrasonic signal induction module (1) outfan is by the first channel
Automatically select module (3) to automatically select module (3) with cable with second channel and be connected.
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 2, it is characterised in that: described cable electricity-fetching module sets
Hold in ultrasonic signal output interface (2)；Cable electricity-fetching module outfan is directly connected with gain demodulation module, or passes through gain
Calibration module is connected, and gain calibration module outfan is connected with gain control module input, and described gain control module is defeated
Go out end to be connected to control gain with amplification module (5).
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 1, it is characterised in that: described ultrasonic signal sensing mould
Block (1) includes piezoelectric chip, by piezoelectric chip, ultrasonic mechanical wave is converted to voltage signal.
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 1, it is characterised in that: described gain calibration module,
Gain demodulation module, gain control module are located at a single-chip microcomputer.
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 1, it is characterised in that: described channel automatically selects mould
Block (3) includes relay, is realized the switching in transmission path by the power on/off of relay.
Intelligence type local-discharge ultrasonic wave sensor the most according to claim 1, it is characterised in that: described state display module bag
Include light-emitting diode display.
8. the method for work of the employing intelligent type local-discharge ultrasonic wave sensor described in any one of claim 1-7, it is characterised in that bag
Include following steps:
1) Host Detection and the connection status of intelligence type local-discharge ultrasonic wave sensor, connect at intelligence type local-discharge ultrasonic wave sensor and main frame
Connecing in a flash, electric current changes, and the current detecting that background host computer is consumed by detection intelligence type local-discharge ultrasonic wave sensor judges
Sensor connects；
2) when background host computer detects that intelligence type local-discharge ultrasonic wave sensor connects, then circulate and export maximum on coax
Gain voltage and least gain voltage, persistently export repeatedly, distributes gain voltage and least gain voltage, and background host computer continues defeated
Go out gain voltage to be arranged；
3), after intelligence type local-discharge ultrasonic wave sensor powers on, Single-chip Controlling relay disconnects the defeated of ultrasonic signal induction module (1)
Going out, cable electricity-fetching module power taking, record AD gathers the feed voltage of coaxial cable, and the collection persistent period exceedes background host computer and continues
Send gain voltage and the time of least gain voltage；
4) the gain calibration module of single-chip microcomputer is according to the feed voltage of record, finds voltage max and minimum that leading portion collects
Value, and as the maximum gain magnitude of voltage corresponding with least gain, and result is input to gain demodulation module；
5) the gain calibration module of single-chip microcomputer is according to the feed voltage of record, and the average voltage that post-calculation segments collects, by it
It is input to gain demodulation module；
6) gain demodulation module is according to voltage max, minima, and meansigma methods calculates background host computer and wants the preamplifier gain of configuration；
7) gain control module removes to configure ultrasonic amplifier according to the gain that gain demodulation module demodulates out, configuration correspondence
Gain；
8) if gain changes, then feed is actively removed and the most again feeds by backstage, and whole system starts to perform from step 1)；
9) if background host computer cannot feed, then the channel of intelligence type local-discharge ultrasonic wave sensor automatically selects module (3) by piezoelectricity
Wafer output is directly connected with intelligence sensor output, and now intelligence sensor works with passive sensor pattern.
The method of work of intelligence type local-discharge ultrasonic wave sensor the most according to claim 8, it is characterised in that: in step 3)
In, single-chip microcomputer disconnects the output of ultrasonic signal induction module (1) by controlling the output of relay disconnection piezoelectric chip.
The method of work of intelligence type local-discharge ultrasonic wave sensor the most according to claim 8, it is characterised in that: in step 2)
In, background host computer circulation output maximum gain voltage and least gain voltage, persistently output 8 times, each persistent period 100ms；
In step 3), the collection persistent period is 1000ms；In step 4), gain calibration module takes the voltage that front 800ms collects
Maximum and minima；In step 5), the average voltage that after the calculating of gain calibration module, 200ms collects.
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| CN108020709A (en) * | 2017-12-06 | 2018-05-11 | 福建和盛高科技产业有限公司 | A kind of three core power cable electriferous state detection devices |
| CN110161383A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of detection device for partial discharge of switch cabinet |
| CN112763863A (en) * | 2020-12-23 | 2021-05-07 | 深圳供电局有限公司 | GIS wireless ultrasonic partial discharge sensor |
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| CN205826806U (en) * | 2016-07-27 | 2016-12-21 | 杭州柯林电气股份有限公司 | Intelligence type local-discharge ultrasonic wave sensor |
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| CN103399265A (en) * | 2013-08-13 | 2013-11-20 | 国家电网公司 | High voltage cable terminal partial discharge ultrasonic monitor |
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| CN110161383A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of detection device for partial discharge of switch cabinet |
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| Publication number | Publication date |
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| CN106093730B (en) | 2019-04-26 |
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Address after: 310000 6 storeys, 7 blocks, No. 1418-41, Moganshan Road, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Colin electric Limited by Share Ltd Address before: 310011 No. 1418-15 Moganshan Road, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Colin electric Limited by Share Ltd |