CN107966207A - Load ratio bridging switch vibration signal acquisition device and analysis system - Google Patents
Load ratio bridging switch vibration signal acquisition device and analysis system Download PDFInfo
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- CN107966207A CN107966207A CN201711492762.8A CN201711492762A CN107966207A CN 107966207 A CN107966207 A CN 107966207A CN 201711492762 A CN201711492762 A CN 201711492762A CN 107966207 A CN107966207 A CN 107966207A
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- signal
- load ratio
- bridging switch
- ratio bridging
- vibration signal
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- 238000004458 analytical method Methods 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2656—Instrumentation
Abstract
The present invention relates to a kind of load ratio bridging switch vibration signal acquisition device and analysis system.Load ratio bridging switch vibration signal acquisition device, including vibrating sensor, signal adapter and radio transmission apparatus, vibrating sensor, signal adapter and radio transmission apparatus are sequentially connected, and radio transmission apparatus wireless communication connection signal analysis equipment；The vibration signal of vibrating sensor collection load ratio bridging switch is simultaneously transmitted to signal adapter, and signal adapter carries out analog-to-digital conversion to vibration signal and obtains digital signal, and by radio transmission apparatus by radio transmission of digital signals to signal analysis equipment.By being wirelessly transferred, from the limitation of the communications cable, it is not necessary to which collection site lays cable again, is applicable in facility, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Description
Technical field
The present invention relates to power equipment monitoring technical field, more particularly to a kind of load ratio bridging switch vibration signals collecting
Device and analysis system.
Background technology
For load ratio bridging switch as unique movable member in power transformer, its major failure type is mechanical breakdown,
Load ratio bridging switch and power transformer may be damaged, the normal safe operation of power equipment and electric system is influenced and causes tight
Weight consequence.When load ratio bridging switch is there are during potential faults, when vibration signal is with normal condition caused by contact action
Vibration signal compared to will be different；Therefore, the vibration signal of load ratio bridging switch is gathered, extracts the state being included in
Characteristic information helps to find the potential faults of power grid as early as possible with the operating status of analyzing and diagnosing load ratio bridging switch.
It is traditional it is main gather vibration signal by the way of wiring, connect vibrating sensor and processor using cable,
The vibration signal that vibrating sensor gathers is transmitted to processor by cable.However, truer, higher precision there is load to obtain
The vibration signal of tap switch is, it is necessary to the parameter of the sampled point and sampling when correspondingly increasing vibration measurement.If use wiring
Mode, multi-point sampling, multi-parameter vibration signal gatherer process in, scene needs the vibrating sensor laid and cable closeer
And it is more, the laying of cable is cumbersome and easily produces mistake, collection inconvenience.
The content of the invention
Based on this, it is necessary to for traditional vibration signals collecting it is inconvenient the problem of, there is provided one kind can improve vibration signal
Gather the load ratio bridging switch vibration signal acquisition device and analysis system of convenience.
A kind of load ratio bridging switch vibration signal acquisition device, including vibrating sensor, signal adapter and be wirelessly transferred
Equipment, the vibrating sensor, the signal adapter and the radio transmission apparatus are sequentially connected, and described be wirelessly transferred sets
Standby wireless communication connection signal analysis equipment；
The vibration signal of the vibrating sensor collection load ratio bridging switch is simultaneously transmitted to the signal adapter, the letter
Number converter carries out the vibration signal analog-to-digital conversion and obtains digital signal, and by the radio transmission apparatus by the number
Word signal is wirelessly transmitted to signal analysis equipment.
Above-mentioned load ratio bridging switch vibration signal acquisition device, by using vibrating sensor, signal adapter and wireless
Transmission equipment is sequentially connected, and the vibration signal that vibrating sensor gathers is converted to digital signal by signal adapter, is wirelessly transferred
Equipment is by radio transmission of digital signals to signal analysis equipment；By being wirelessly transferred, from the limitation of the communications cable, it is not necessary to again
Collection site lays cable, is applicable in facility, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
A kind of load ratio bridging switch divided oscillation signal analysis system, including signal analysis equipment and above-mentioned load ratio bridging switch shake
Dynamic signal pickup assembly, the radio transmission apparatus wireless communication connect the signal analysis equipment.
Above-mentioned load ratio bridging switch divided oscillation signal analysis system, is shaken by signal analysis equipment and above-mentioned load ratio bridging switch
Dynamic signal pickup assembly wireless communication so that the limitation from the communications cable is transmitted in the collection of vibration signal, it is not necessary to is gathered again
Cable is laid at scene, easy-to-use, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Brief description of the drawings
Fig. 1 is the structure chart of load ratio bridging switch vibration signal acquisition device in an embodiment；
Fig. 2 is the structure chart of load ratio bridging switch vibration signal acquisition device in another embodiment；
Fig. 3 is the schematic diagram of load ratio bridging switch divided oscillation signal analysis system in an embodiment.
Embodiment
With reference to figure 1, in one embodiment, there is provided a kind of load ratio bridging switch vibration signal acquisition device, including vibration pass
Sensor 110, signal adapter 120 and radio transmission apparatus 130, vibrating sensor 110, signal adapter 120 and are wirelessly transferred
Equipment 130 is sequentially connected, and 130 wireless communication of radio transmission apparatus connection signal analysis equipment.
Vibrating sensor 110 gathers the vibration signal of load ratio bridging switch and is transmitted to signal adapter 120, signal conversion
Device 120 carries out analog-to-digital conversion to vibration signal and obtains digital signal, and is wirelessly passed digital signal by radio transmission apparatus 130
Transport to signal analysis equipment.
Specifically, vibrating sensor 110 is fixed inside load ratio bridging switch to sense shaking for load ratio bridging switch
It is dynamic, the physical quantity of vibration is converted into the vibration signal of electrical signal form, for example, it may be whole load ratio bridging switch is vibrated
Signal pickup assembly is fixed inside load ratio bridging switch；Signal analysis equipment is arranged on outside load ratio bridging switch.Shake
The signal type of dynamic signal is analog signal, vibration signal is converted to digital signal by signal adapter 120, easy to wireless
Transmission equipment 130 is wirelessly transferred.
Above-mentioned load ratio bridging switch vibration signal acquisition device, by using vibrating sensor 110, signal adapter 120
It is sequentially connected with radio transmission apparatus 130, the vibration signal that vibrating sensor 110 gathers is converted to number by signal adapter 120
Word signal, radio transmission apparatus 130 is by radio transmission of digital signals to signal analysis equipment；By being wirelessly transferred, from communication
The limitation of cable, it is not necessary to which collection site lays cable again, is applicable in facility, is particularly suitable in multi-point sampling requirement and badly should
With being applicable under environment.
In one embodiment, vibrating sensor 110 is piezoelectric acceleration transducer.Piezoelectric acceleration transducer spirit
Sensitivity is high, and collection effect is good.Specifically, in the present embodiment, the LC0151T model piezoelectric types of built-in micro-amplifier can be used
Acceleration transducer.
In one embodiment, signal adjustment circuit 121 and analog-digital converter are included with reference to figure 2, signal adapter 120
122, signal adjustment circuit 121 connects vibrating sensor 110 and analog-digital converter 122, and the connection of analog-digital converter 122 is wirelessly transferred
Equipment 130.
After the vibration signal that signal adjustment circuit 121 exports vibrating sensor 110 pre-processes after output pretreatment
Signal to analog-digital converter 122, analog-digital converter 122 carries out analog-to-digital conversion to pretreated signal and obtains digital signal.
Wherein, pretreatment can include the processing such as filtering, amplification, pressure regulation.Shake by using the connection of signal adjustment circuit 121
Dynamic sensor 110 and analog-digital converter 122, first pre-process vibration signal before analog-to-digital conversion, improve vibration signal.
In one embodiment, PGA (programmable gain amplifier) is included with continued reference to Fig. 2, signal adjustment circuit 121
1211 and differential voltage adjustment circuit 1212, the connection vibrating sensors 110 of PGA 1211 and differential voltage adjustment circuit 1212, it is poor
Component voltage adjustment circuit 1212 connects analog-digital converter 122.
The vibration signal that PGA 1211 exports vibrating sensor 110 is filtered enhanced processing, and exports filter and amplification
Signal afterwards to differential voltage adjustment circuit 1212, differential voltage adjustment circuit 1212 carries out voltage to the signal after filter and amplification
Adjustment, and the signal after differential output voltage adjustment is to analog-digital converter 122.Wherein, difference output is by the letter of single ended input
Number be converted to the signal of both-end difference output.
The reference voltage that signal is exported due to PGA 1211 is generally 0V (volt), and rear class analog-digital converter 122 inputs
The scope of signal voltage amplitude is generally 0-5V, therefore need to be by adjusting reference voltage.Specifically, differential voltage adjustment can be set
The reference voltage of circuit 1212 is 2.5V, makes output to the signal of analog-digital converter 122 in applied signal voltage amplitude range
Fluctuation up and down.Since PGA 1211 can use ARM (processor) programming Control, by using PGA 1211, can reduce button with
The use of switch.
PGA 1211 can be made of electronic switch chip, operational amplifier and capacitance resistance ware, cross control electronic switch core
The closure of piece, disconnect the control realized to op-amp gain.Specifically, for meet the operating voltage of actual motion, input
The requirement such as signal voltage range, gain bandwidth product, switching rate, common-mode rejection ratio, operational amplifier can use TLE2072 cores
Piece.
Specifically, differential voltage adjustment circuit 1212 can include voltage-regulating circuit and difference channel, voltage adjustment electricity
Road connects PGA 1211 and difference channel, for carrying out voltage adjustment；Difference channel connects analog-digital converter 122, for difference
Output.
In one embodiment, sensor interface circuitry 1213 is further included with continued reference to Fig. 2, signal adjustment circuit 121,
PGA 1211 connects vibrating sensor 110 by sensor interface circuitry 1213.
Sensor interface circuitry 1213 is used to connect polytype vibrating sensor.By setting sensor interface circuitry
1213, it can be achieved that the access of different type vibrating sensor, adapts to different vibration signals collecting occasions.
In one embodiment, analog-digital converter 122 is A/D conversion chips.The device one of traditional collection vibration signal
As be the A/D conversion functions for directly using processor, be accomplished that 10, the conversion of the A/D of 12, sampling resolution is relatively low, adopts
Sample error is larger, adds the difficulty of follow-up signal processing.By using independent A/D conversion chips, high-precision letter can reach
Number sampling purpose.
Specifically, in the present embodiment, using the A/D conversion chips of AK5385B models, there is higher sampling precision and divide
Resolution, realizes the high precision collecting of vibration signal.
In one embodiment, radio transmission apparatus 130 includes processor 131 and wireless transport module 132, processor
131 connection signal adapters 120 and wireless transport module 132, the connection signal analysis of 132 wireless communication of wireless transport module are set
It is standby.Processor 131 controls being wirelessly transferred for wireless transport module 132, easy-to-use.
Specifically, processor 131 may be provided with URAT (Universal Asynchronous Receiver/
Transmitter universal asynchronous receiving-transmitting transmitters) serial ports is, it can be achieved that the extension of external function.
Wherein, wireless transport module 132 can use WIFI module.WIFI module connection response is fast, and performance is stable, low work(
Consume, is small, light-weight, so as to reduce the volume of load ratio bridging switch vibration signal acquisition device, improving collecting efficiency.
In one embodiment, processor 131 includes carrying SDIO (Secure Digital Input and Output
Secure digital input and output) interface ARM chips, wireless transport module 132 is SDIO-WIFI modules, and ARM chips pass through SDIO
Interface connects SDIO-WIFI modules.
SDIO-WIFI modules are a kind of flush bonding modules for meeting WIFI wireless network standards based on SDIO interfaces, are passed
Defeated speed is high, cheap.SDIO-WIFI modules are connected by SDIO interfaces by using ARM chips, vibration signal can be improved
Collecting efficiency, and reduce cost.In the present embodiment, ARM chips can be selected based on Cortex-M3 kernels
The chip of STM32F103VCT6 models.
In one embodiment, there is provided a kind of load ratio bridging switch divided oscillation signal analysis system, including signal analysis equipment
With above-mentioned load ratio bridging switch vibration signal acquisition device, 130 wireless communication of radio transmission apparatus connection signal analysis equipment.
After signal analysis equipment receives the digital signal that radio transmission apparatus 130 is wirelessly transferred, digital signal can be carried out
Feature extraction obtains running state information, so that staff is according to the operation shape of running state information analysis load ratio bridging switch
State.Specifically, signal analysis equipment can also be shown and stored to digital signal and/or running state information.
Above-mentioned load ratio bridging switch divided oscillation signal analysis system, is shaken by signal analysis equipment and above-mentioned load ratio bridging switch
Dynamic signal pickup assembly wireless communication so that the limitation from the communications cable is transmitted in the collection of vibration signal, it is not necessary to is gathered again
Cable is laid at scene, easy-to-use, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Specifically, as shown in figure 3, signal analysis equipment can be computer.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
- A kind of 1. load ratio bridging switch vibration signal acquisition device, it is characterised in that including vibrating sensor, signal adapter and Radio transmission apparatus, the vibrating sensor, the signal adapter and the radio transmission apparatus are sequentially connected, and the nothing Line transmission equipment is used for wireless communication connection signal analysis equipment；The vibration signal of the vibrating sensor collection load ratio bridging switch is simultaneously transmitted to the signal adapter, and the signal turns Parallel operation carries out the vibration signal analog-to-digital conversion and obtains digital signal, and is believed the numeral by the radio transmission apparatus Number it is wirelessly transmitted to signal analysis equipment.
- 2. load ratio bridging switch vibration signal acquisition device according to claim 1, it is characterised in that the vibrating sensing Device is piezoelectric acceleration transducer.
- 3. load ratio bridging switch vibration signal acquisition device according to claim 1, it is characterised in that the signal conversion Device includes signal adjustment circuit and analog-digital converter, and the signal adjustment circuit connects the vibrating sensor and the modulus turns Parallel operation, the analog-digital converter connect the radio transmission apparatus；The vibration signal that the signal adjustment circuit exports the vibrating sensor exports pretreated after pre-processing To the analog-digital converter, the analog-digital converter carries out pretreated signal analog-to-digital conversion and obtains the numeral letter signal Number.
- 4. load ratio bridging switch vibration signal acquisition device according to claim 3, it is characterised in that the signal adjustment Circuit includes PGA and differential voltage adjustment circuit, the PGA connections vibrating sensor and differential voltage adjustment electricity Road, the differential voltage adjustment circuit connect the analog-digital converter；The vibration signal that the PGA exports the vibrating sensor is filtered enhanced processing, and after exporting filter and amplification Signal to the differential voltage adjustment circuit, the differential voltage adjustment circuit carries out voltage tune to the signal after filter and amplification It is whole, and the signal after differential output voltage adjustment is to the analog-digital converter.
- 5. load ratio bridging switch vibration signal acquisition device according to claim 4, it is characterised in that the signal adjustment Circuit further includes sensor interface circuitry, and the PGA connects the vibrating sensor by the sensor interface circuitry.
- 6. load ratio bridging switch vibration signal acquisition device according to claim 1, it is characterised in that the analog-to-digital conversion Device is A/D conversion chips.
- 7. load ratio bridging switch vibration signal acquisition device according to claim 1, it is characterised in that described to be wirelessly transferred Equipment includes processor and wireless transport module, and the processor connects the signal adapter and the wireless transport module, The wireless transport module wireless communication connects the signal analysis equipment.
- 8. load ratio bridging switch vibration signal acquisition device according to claim 7, it is characterised in that the processor bag The ARM chips with SDIO interfaces are included, the wireless transport module is SDIO-WIFI modules, and the ARM chips pass through described SDIO interfaces connect the SDIO-WIFI modules.
- 9. a kind of load ratio bridging switch divided oscillation signal analysis system, it is characterised in that including signal analysis equipment and claim 1-8 any one of them load ratio bridging switch vibration signal acquisition devices, described in radio transmission apparatus wireless communication connection Signal analysis equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492762.8A CN107966207A (en) | 2017-12-30 | 2017-12-30 | Load ratio bridging switch vibration signal acquisition device and analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492762.8A CN107966207A (en) | 2017-12-30 | 2017-12-30 | Load ratio bridging switch vibration signal acquisition device and analysis system |
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| Publication Number | Publication Date |
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| CN107966207A true CN107966207A (en) | 2018-04-27 |
Family
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| CN201711492762.8A Pending CN107966207A (en) | 2017-12-30 | 2017-12-30 | Load ratio bridging switch vibration signal acquisition device and analysis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274921A (en) * | 2019-01-17 | 2019-09-24 | 武汉大学 | A kind of digital two dimension meets dopplerbroadening system |
| CN110595762A (en) * | 2019-10-29 | 2019-12-20 | 广州供电局有限公司 | Transformer on-load tap changer diagnosis system and transformer on-load tap changer diagnosis method |
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| CN101709995A (en) * | 2009-12-24 | 2010-05-19 | 浙江大学 | Methods for vibration online monitoring and fault diagnosis of power transformer |
| CN202351398U (en) * | 2011-11-23 | 2012-07-25 | 厦门红相电力设备股份有限公司 | Fault diagnosis system for load tap changer of transformer |
| CN203405548U (en) * | 2013-07-22 | 2014-01-22 | 江苏骏龙电力科技股份有限公司 | An online monitoring apparatus of a transformer on-load tap changer |
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| CN205809250U (en) * | 2016-07-19 | 2016-12-14 | 广东电网有限责任公司佛山供电局 | On-load tap-changer of transformer vibration characteristics detecting system |
| CN207832309U (en) * | 2017-12-30 | 2018-09-07 | 广州供电局有限公司 | Load ratio bridging switch vibration signal acquisition device and analysis system |
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2017
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| CN101666710A (en) * | 2009-09-23 | 2010-03-10 | 河海大学 | Fault diagnosis system of transmission part of on-load tap-changer and diagnostic method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274921A (en) * | 2019-01-17 | 2019-09-24 | 武汉大学 | A kind of digital two dimension meets dopplerbroadening system |
| CN110595762A (en) * | 2019-10-29 | 2019-12-20 | 广州供电局有限公司 | Transformer on-load tap changer diagnosis system and transformer on-load tap changer diagnosis method |
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Effective date of registration: 20200924 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |