CN105911435A - Ultrasonic wave wireless sensor - Google Patents
Ultrasonic wave wireless sensor Download PDFInfo
- Publication number
- CN105911435A CN105911435A CN201610221207.0A CN201610221207A CN105911435A CN 105911435 A CN105911435 A CN 105911435A CN 201610221207 A CN201610221207 A CN 201610221207A CN 105911435 A CN105911435 A CN 105911435A
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- CN
- China
- Prior art keywords
- ultrasonic
- chip microcomputer
- converter
- amplification circuit
- filter circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- G01R31/1227—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 of components, parts or materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an ultrasonic wave wireless sensor comprising a power source, an ultrasonic sensing device, a pre-amplification circuit, a filtering circuit, an A/D converter, a single-chip microcomputer and a wireless transmission module, wherein the power source is connected with the ultrasonic sensing device, the pre-amplification circuit, the filtering circuit, the A/D converter, the single-chip microcomputer and the wireless transmission module; the ultrasonic sensing device, the pre-amplification circuit, the filtering circuit, the A/D converter and the single-chip microcomputer are connected orderly; the single-chip microcomputer and the wireless transmission module are connected via an RS-232 interface. The ultrasonic wave wireless sensor disclosed in the invention is used for monitoring partial discharge signals of electrical equipment on line, an internal part of the ultrasonic wave wireless sensor is an integrated wireless transmission module, and wireless data transmission requirements for the partial discharge signals can be met.
Description
Technical field
The present invention relates to a kind of ultrasonic wireless sensor.
Background technology
Along with advancing by leaps and bounds of China's power industry, modern power systems forward bulk power grid, large-sized unit, supertension,
Jumbo direction is developed, and the dielectric level of power equipment be it is also proposed requirements at the higher level.Transformer and distribution power station is as intelligence
Its all kinds of electrical equipments are implemented insulation state monitoring and carry out in early days by grid power transmission, the important step of distribution system
Early warning, can be effectively improved the operational reliability of transformer and distribution power station electrical equipment, reduces the operation expense of equipment,
In the service life of extension device, reduce accident rate.
Shelf depreciation is one of significant data of reflection transformer and distribution power station key equipment insulating properties, contains apparatus insulated
The sign of deterioration and the form of expression, it is possible to reflection inside electric appliance operating condition and state of insulation in advance, send out in time
Existing device interior insulation potential safety hazard that may be present or defect, it is simple to staff takes to process targetedly to arrange
Execute, prevent latency, the generation of sudden severe accident.Therefore, partial discharge monitoring is as the weight of insulation diagnosis
Want means to obtain increasingly to be widely applied.
The monitoring method of shelf depreciation mainly has chemical monitoring method, pulse current method, ultrahigh frequency monitoring method, surpasses at present
Sound wave monitoring method etc..When electrical equipment generation shelf depreciation, between region of discharge Middle molecule, produce hard hit,
Adjoint can there is the release of ultrasonic energy, ultrasonic sensor is based on this principle, the office of real-time watch device
Portion's discharge signal.The monitoring ultrasonic method of shelf depreciation is to receive electrical equipment with ultrasonic sensor to occur local to put
The ultrasound wave produced during electricity, thus detects the size and location of shelf depreciation.The operation of equipment is not had by the method
Any impact, is more suitable for on-line monitoring, has original advantage in terms of equipment discharge source location simultaneously.
But transformer and distribution power station actual condition is complicated, and equipment under test is numerous, need substantial amounts of data transmission link, use
Wired data transfer is difficult to the communication requirement meeting between monitoring terminal and industrial computer.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of ultrasonic wireless sensor, for online
The local discharge signal of monitoring electrical equipment, it is internally integrated wireless transport module, it is possible to realize local discharge signal
Wireless data transmission requirement.
The technical scheme realizing above-mentioned purpose is: a kind of ultrasonic wireless sensor, including power supply, ultrasonic sensing dress
Put, pre-amplification circuit, filter circuit, A/D converter, single-chip microcomputer and wireless transport module, described power supply divides
Not with described ultrasonic sensing device, pre-amplification circuit, filter circuit, A/D converter, single-chip microcomputer and wireless biography
Defeated module is connected, described ultrasonic sensing device, pre-amplification circuit, filter circuit, A/D converter and single-chip microcomputer
It is sequentially connected；Described single-chip microcomputer is connected by RS-232 interface with wireless transport module；Wherein:
Described ultrasonic sensing device gathers ultrasonic signal during Devices to test generation shelf depreciation, and by this ultrasound wave
Signal passes to described pre-amplification circuit；
The ultrasonic signal received is amplified processing by described pre-amplification circuit, and surpassing through processing and amplifying
Acoustic signals is sent to described filter circuit；
The ultrasonic signal through processing and amplifying received is filtered processing by described filter circuit, and through filtering
The ultrasonic signal that ripple processes is sent to described A/D converter；
Described A/D converter carries out analog digital conversion to the ultrasonic signal processed after filtering received, will be through filtering
The ultrasonic signal that ripple processes is changed into digital signal, and this digital signal is sent to described single-chip microcomputer；
The digital signal received is stored by described single-chip microcomputer, and realizes this digital signal by wireless transport module
Be wirelessly transferred.
Above-mentioned a kind of ultrasonic wireless sensor, wherein, described pre-amplification circuit is selected can regulate gain system
The AD620 operational amplifier of number.
Above-mentioned a kind of ultrasonic wireless sensor, wherein, AD826 operational amplifier selected by described filter circuit,
Described filter circuit is made up of two bivalent high-pass filters and a second-order low-pass filter cascade.
The ultrasonic wireless sensor of the present invention, for the local discharge signal of on-line monitoring electrical equipment, inside it
Integrated wireless transport module, it is possible to realize the wireless data transmission requirement of local discharge signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ultrasonic wireless sensor of the present invention.
Detailed description of the invention
In order to make those skilled in the art be better understood when technical scheme, below in conjunction with the accompanying drawings
Its detailed description of the invention is described in detail:
Referring to Fig. 1, highly preferred embodiment of the present invention, a kind of ultrasonic wireless sensor, including power supply 1, ultrasonic
Sensing device 2, pre-amplification circuit 3, filter circuit 4, A/D converter 5, single-chip microcomputer 6 and be wirelessly transferred mould
Block 7, power supply 1 respectively with ultrasonic sensing device 2, pre-amplification circuit 3, filter circuit 4, A/D converter 5,
Single-chip microcomputer 6 is connected with wireless transport module 7, ultrasonic sensing device 2, pre-amplification circuit 3, filter circuit 4,
A/D converter 5 and single-chip microcomputer 6 are sequentially connected；Single-chip microcomputer 6 is with wireless transport module 7 by RS-232 interface even
Connect.
The ultrasonic wireless sensor of the present invention, when ultrasonic sensing device 2 gathers Devices to test generation shelf depreciation
Ultrasonic signal, and this ultrasonic signal is passed to pre-amplification circuit 3；Reception is surpassed by pre-amplification circuit 3
Acoustic signals is amplified processing, and the ultrasonic signal through processing and amplifying is sent to filter circuit 4；Filtering
The ultrasonic signal through processing and amplifying received is filtered processing by circuit 4, and super process after filtering
Acoustic signals is sent to A/D converter 5；The ultrasonic signal processed after filtering received is entered by A/D converter 5
Row analog digital conversion, is changed into the ultrasonic signal processed after filtering digital signal, and this digital signal is sent
To single-chip microcomputer 6；The digital signal received is stored by single-chip microcomputer 6, and realizes this number by wireless transport module
Being wirelessly transferred of word signal.
Pre-amplification circuit 3 selects the AD620 operational amplifier that can regulate gain coefficient.Filter circuit 4 is selected
AD826 operational amplifier, filter circuit 4 is by two bivalent high-pass filters and a second-order low-pass filter cascade
Constitute.Single-chip microcomputer 6 (MCU, micro controller unit) is directly programmed design by computer, it is achieved data acquisition
And corresponding pretreatment, and be connected by RS-232 interface with wireless transport module 7, by with data concentrator
Coordinate, it is achieved Partial discharge signal gathers the real-time Transmission of data, thus reaches the purpose of on-line monitoring.
The ultrasonic wireless sensor of the present invention, in use, to be measured is set monitor by wireless transport module
Standby local discharge signal is sent to industrial computer, meets the wireless communication needs between monitoring terminal and industrial computer.
In sum, the ultrasonic wireless sensor of the present invention, the shelf depreciation for on-line monitoring electrical equipment is believed
Number, it is internally integrated wireless transport module, it is possible to realize the wireless data transmission requirement of local discharge signal.
Those of ordinary skill in the art it should be appreciated that above embodiment be intended merely to illustrate the present invention,
And it is not used as limitation of the invention, as long as in the spirit of the present invention, the above is implemented
The change of example, modification all will fall in the range of claims of the present invention.
Claims (3)
1. a ultrasonic wireless sensor, it is characterised in that include power supply, ultrasonic sensing device, preposition amplification
Circuit, filter circuit, A/D converter, single-chip microcomputer and wireless transport module, described power supply is ultrasonic with described respectively
Sensing device, pre-amplification circuit, filter circuit, A/D converter, single-chip microcomputer are connected with wireless transport module,
Described ultrasonic sensing device, pre-amplification circuit, filter circuit, A/D converter and single-chip microcomputer are sequentially connected；Institute
State single-chip microcomputer to be connected by RS-232 interface with wireless transport module；Wherein:
Described ultrasonic sensing device gathers ultrasonic signal during Devices to test generation shelf depreciation, and by this ultrasound wave
Signal passes to described pre-amplification circuit；
The ultrasonic signal received is amplified processing by described pre-amplification circuit, and surpassing through processing and amplifying
Acoustic signals is sent to described filter circuit；
The ultrasonic signal through processing and amplifying received is filtered processing by described filter circuit, and through filtering
The ultrasonic signal that ripple processes is sent to described A/D converter；
Described A/D converter carries out analog digital conversion to the ultrasonic signal processed after filtering received, will be through filtering
The ultrasonic signal that ripple processes is changed into digital signal, and this digital signal is sent to described single-chip microcomputer；
The digital signal received is stored by described single-chip microcomputer, and realizes this digital signal by wireless transport module
Be wirelessly transferred.
A kind of ultrasonic wireless sensor the most according to claim 1, it is characterised in that described preposition amplification
Circuit selects the AD620 operational amplifier that can regulate gain coefficient.
A kind of ultrasonic wireless sensor the most according to claim 1, it is characterised in that described filter circuit
Selecting AD826 operational amplifier, described filter circuit is by two bivalent high-pass filters and a second-order low-pass filter
Device cascade is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221207.0A CN105911435A (en) | 2016-04-11 | 2016-04-11 | Ultrasonic wave wireless sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221207.0A CN105911435A (en) | 2016-04-11 | 2016-04-11 | Ultrasonic wave wireless sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105911435A true CN105911435A (en) | 2016-08-31 |
Family
ID=56745806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610221207.0A Pending CN105911435A (en) | 2016-04-11 | 2016-04-11 | Ultrasonic wave wireless sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105911435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687410A (en) * | 2019-10-15 | 2020-01-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultrasonic partial discharge test wireless transmission module |
| CN110927537A (en) * | 2019-11-27 | 2020-03-27 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge monitoring device and method based on Internet of things edge calculation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147890A (en) * | 2003-11-17 | 2005-06-09 | Hitachi Ltd | Insulation abnormality diagnostic device |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN103364698A (en) * | 2013-07-23 | 2013-10-23 | 国家电网公司 | Detection method for rapidly positioning local discharge of GIS (geographic information system) by using ultrasonic testing technology |
| CN104061999A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Partial discharge locating detection device of distribution transformer |
-
2016
- 2016-04-11 CN CN201610221207.0A patent/CN105911435A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147890A (en) * | 2003-11-17 | 2005-06-09 | Hitachi Ltd | Insulation abnormality diagnostic device |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN103364698A (en) * | 2013-07-23 | 2013-10-23 | 国家电网公司 | Detection method for rapidly positioning local discharge of GIS (geographic information system) by using ultrasonic testing technology |
| CN104061999A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Partial discharge locating detection device of distribution transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687410A (en) * | 2019-10-15 | 2020-01-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultrasonic partial discharge test wireless transmission module |
| CN110927537A (en) * | 2019-11-27 | 2020-03-27 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge monitoring device and method based on Internet of things edge calculation |
| CN110927537B (en) * | 2019-11-27 | 2022-04-05 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge monitoring device and method based on Internet of things edge calculation |
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Application publication date: 20160831 |
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