CN207992121U - A kind of distributed acoustic emission system synchronized using GPS time - Google Patents
A kind of distributed acoustic emission system synchronized using GPS time Download PDFInfo
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- CN207992121U CN207992121U CN201820531378.8U CN201820531378U CN207992121U CN 207992121 U CN207992121 U CN 207992121U CN 201820531378 U CN201820531378 U CN 201820531378U CN 207992121 U CN207992121 U CN 207992121U
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Abstract
The utility model is related to a kind of distributed acoustic emission systems synchronized using GPS time, including：Server device and client device, server device include background server and the long-range Wi Fi wireless devices of the server end being electrically connected with background server；Client device includes client remote Wi Fi wireless devices, interchanger and the multiple sound emission acquisition channels being connect with interchanger；Equipped with wireless collection device and the acoustic emission sensor being electrically connected with wireless collection device in any sound emission acquisition channel；Any wireless collection device is built-in with GPS signal reception device, and GPS signal reception device includes the fpga chip and GPS antenna being electrically connected with fpga chip, clock synchronizer and GPS indicator lights；GPS signal reception device is for receiving GPS satellite time calibration onboard clock, to realize the time synchronization of each sound emission acquisition channel.Technical solution provided by the utility model can solve the problem of each autonomous channel of wireless distributed Acoustic radiating instrument acquisition in the prior art signal is asynchronous to cannot achieve positioning using TDOA.
Description
Technical field
The utility model is related to Acoustic radiating instrument technical fields, and in particular to a kind of distributed acoustic synchronized using GPS time
Emission system.
Background technology
Acoustic emission detection system obtains extensively in multiple industries as periodic detection and effective instrument of inspection detection
Application.But in the application of the long-range Long Real-time Monitoring of sound emission, current existing method is mainly based upon Acoustic radiating instrument
Computer is operated using another computer as client as a host by internet or other telecommunication networks, this
Mode needs to place a computer at monitored scene, and needs in the monitored artificial frequent operation client electricity in scene
Some functions of brain.Although this scheme using two dataphones can solve the problems, such as it is a part of, in many applied fields
Its use of scape is restricted.Such as mine, bridge, tunnel, and there is the environment of radioactivity, toxicity, these site environments are not
The person of getting married operates.In addition some site environments may be not suitable for putting computer due to lacking power supply or firm position.
Distributed acoustic transmitter is real-time by multiple independent single channel sound emission collectors and computer composition multichannel
Sound emission acquisition system, collector have been eliminated by carrying out signal transmission between Wi-Fi technology and interchanger and host computer
The problem of line acoustic emission system needs a large amount of human and material resources, financial resources and time cost to be connected up, simultaneously because each channel it
Between collector it is relatively independent, maintenance with maintenance it is more convenient.But collector is relatively independent between each channel to cause data to be adopted
Collect time irreversibility, influences sound emission data analysis, positioning using TDOA is caused to deviate.
Utility model content
In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of same using GPS time
The distributed acoustic emission system of step is different to solve each autonomous channel acquisition signal of wireless distributed Acoustic radiating instrument in the prior art
The problem of walking, cannot achieve positioning using TDOA.
In order to achieve the above object, the utility model adopts the following technical solution：
A kind of distributed acoustic emission system synchronized using GPS time, including：Server device and client device,
In, the server device include background server and the long-range Wi-Fi of the server end being electrically connected with the background server without
Line apparatus；
The client device includes client remote Wi-Fi wireless devices, interchanger and is connect with the interchanger
Multiple sound emission acquisition channels；It is electric equipped with wireless collection device and with the wireless collection device in any sound emission acquisition channel
The acoustic emission sensor of connection；The sound emission data that the acoustic emission sensor detects pass through the interchanger, client successively
Long-range Wi-Fi wireless devices, the long-range Wi-Fi wireless devices of server end is held the background server to be transferred to, so that after described
Platform server positions acoustic emission source；
Any wireless collection device is built-in with GPS signal reception device, and the GPS signal reception device includes FPGA cores
The piece and GPS antenna being electrically connected with the fpga chip, clock synchronizer and GPS indicator lights；The GPS signal reception device is used
In receiving GPS satellite time calibration onboard clock, to realize the time synchronization of each sound emission acquisition channel.
Further, any clock synchronizer uses the GPS clock of same precision.
Further, the timing tracking accuracy of each sound emission acquisition channel is caused up to up to 30 μ s by GPS zeitgebers
Systematic error be 0.096m.
Further, the interchanger is wirelessly connected with the multiple sound emission acquisition channel, with the client remote
Wi-Fi wireless devices are electrically connected.
Further, the interchanger includes multiple multinode access switch, any multinode access switch
16 sound emission acquisition channels can at most be connected.
Further, the long-range Wi-Fi wireless devices of the server end be single node remote exchange or AT5150 types without
Line number is according to transceiver base station.
Further, the client remote Wi-Fi wireless devices and the long-range Wi-Fi wireless devices class of the server end
Type is identical, is single node remote exchange or AT5150 type wireless data transceivings base station.
Further, between the long-range Wi-Fi wireless devices of the server end and client remote Wi-Fi wireless devices
Peak signal transmission range is 10 kilometers.
Further, the wireless collection device is powered by internal battery, the interchanger by mobile power into
Row power supply.
Further, the interchanger is powered by rated voltage 12V, the mobile power of rated power 8W.
The utility model uses above technical scheme, at least has following advantageous effect：
As shown from the above technical solution, this distributed acoustic synchronized using GPS time provided by the utility model is emitted
System, wireless collection device are built-in with GPS signal reception device, GPS signal reception device include fpga chip and with the FPGA
GPS antenna, clock synchronizer and the GPS indicator lights of chip electrical connection；Each single channel wireless collection device is supplied to GPS antenna inclined
Set voltage so that GPS signal enhances and stablizes, when GPS antenna receives satellite-signal, the GPS instructions on clock synchronizer
Lamp is glittering, at this time, it was demonstrated that GPS antenna successfully obtains satellite-signal, ensures that, accurately to clock synchronizer time service, all channels use
The same high-precision GPS clock；After GPS signal reception device receives clock signal, one pulse of transmitting in every 1 second, and
The pulse is sent to fpga chip, fpga chip is according to standard calibration clock, and synchronization accuracy is up to Microsecond grade, positioning accuracy
The requirement of most of wireless sound emission applications can be met.
In addition, this distributed acoustic emission system synchronized using GPS time provided by the utility model, makes multiple independences
Single pass wireless collection device carries out signal transmission with background server by Wi-Fi technology, compares wired centralized sound emission
Its erection cost is lower, simultaneously because wireless collection device is relatively independent between each channel, single wireless collection device failure does not influence
The whole network works, and maintenance and maintenance are more convenient.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of distributed acoustic emission system synchronized using GPS time that one embodiment of the utility model provides
Schematic block diagram.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, a kind of distributed acoustic synchronized using GPS time that one embodiment of the utility model provides emits system
System, including：Server device and client device, wherein the server device include background server 1 and with the backstage
The long-range Wi-Fi wireless devices of server end 2 that server 1 is electrically connected；
The client device includes client remote Wi-Fi wireless devices 3, interchanger 4 and is connect with the interchanger 4
Multiple sound emission acquisition channels；Be equipped in any sound emission acquisition channel wireless collection device 5 and with the wireless collection
The acoustic emission sensor 6 that device 5 is electrically connected；The sound emission data that the acoustic emission sensor 6 detects pass through the exchange successively
Machine 4, client remote Wi-Fi wireless devices 3, the long-range Wi-Fi wireless devices 2 of server end, are transferred to the background server
1, so that the background server 1 positions acoustic emission source, (it is existing how background server realizes that acoustic emission source is positioned as
Technology is not belonging to scope of protection of the utility model)；
Any wireless collection device 5 is built-in with GPS signal reception device 51, and the GPS signal reception device 51 includes
The fpga chip and GPS antenna being electrically connected with the fpga chip, clock synchronizer and GPS indicator lights；The GPS signal receives
Device 51 is for receiving GPS satellite time calibration onboard clock, to realize the time synchronization of each sound emission acquisition channel.
Further, any clock synchronizer uses the GPS clock of same precision.
Further, the timing tracking accuracy of each sound emission acquisition channel is caused up to up to 30 μ s by GPS zeitgebers
Systematic error be 0.096m.
As shown from the above technical solution, this distributed acoustic synchronized using GPS time provided by the utility model is emitted
System, wireless collection device are built-in with GPS signal reception device, GPS signal reception device include fpga chip and with the FPGA
GPS antenna, clock synchronizer and the GPS indicator lights of chip electrical connection；Each single channel wireless collection device is supplied to signal GPS days
Line bias voltage so that GPS signal enhances and stablizes, when GPS antenna receives satellite-signal, the GPS on clock synchronizer
Indicator light is glittering, at this time, it was demonstrated that GPS antenna successfully obtains satellite-signal, ensures accurately to clock synchronizer time service, all channels
Use the same high-precision GPS clock；After GPS signal reception device receives clock signal, one arteries and veins of transmitting in every 1 second
Punching, and the pulse is sent to fpga chip, for fpga chip according to standard calibration clock, synchronization accuracy is fixed up to Microsecond grade
Position precision can meet the requirement of most of wireless sound emission applications.
In addition, this distributed acoustic emission system synchronized using GPS time provided by the utility model, makes multiple independences
Single pass wireless collection device carries out signal transmission with background server by Wi-Fi technology, compares wired centralized sound emission
Its erection cost is lower, simultaneously because wireless collection device is relatively independent between each channel, single wireless collection device failure does not influence
The whole network works, and maintenance and maintenance are more convenient.
It is understood that GPS signal reception device is built in wireless collection device by the utility model, receives GPS and defend
Star time calibration onboard clock assigns the parameter high-precision time, realizes the time synchronization between each acquisition channel, synchronization accuracy
Up to 30 μ s, positioning using TDOA is realized, the systematic error caused by GPS zeitgebers is only 0.096m, and positioning accuracy can meet greatly
The requirement of most wireless sound emission applications.This method equipment is simple, and repair and maintenance is convenient, is unsuitable for personnel suitable for site environment
Operation, lacks the extreme conditions such as power supply or stable position, such as mine, bridge, high pressure and the environment etc. for having radioactivity, toxicity.
Further, the interchanger 4 is wirelessly connected with the multiple sound emission acquisition channel, with the client remote
Wi-Fi wireless devices 3 are electrically connected.
Further, the interchanger 4 includes multiple multinode access switch, any multinode access switch
16 sound emission acquisition channels can at most be connected.
Further, the long-range Wi-Fi wireless devices 2 of the server end be single node remote exchange or AT5150 types without
Line number is according to transceiver base station.
Further, the long-range Wi-Fi wireless devices of the client remote Wi-Fi wireless devices 3 and the server end 2
Type is identical, is single node remote exchange or AT5150 type wireless data transceivings base station.
Further, between the long-range Wi-Fi wireless devices 2 of the server end and client remote Wi-Fi wireless devices 3
Peak signal transmission range be 10 kilometers.
Further, the wireless collection device 5 is powered by internal battery, and the interchanger 4 passes through mobile power
It is powered.
Further, the interchanger 4 is powered by rated voltage 12V, the mobile power 7 of rated power 8W.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.Term " first ", " second " are used for description purposes only, and are not understood to indicate or imply phase
To importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
Claims (10)
1. a kind of distributed acoustic emission system synchronized using GPS time, which is characterized in that including：Server device and client
End equipment, wherein the server device includes that background server and the server end being electrically connected with the background server are remote
Journey Wi-Fi wireless devices；
The client device includes client remote Wi-Fi wireless devices, interchanger and is connect with the interchanger multiple
Sound emission acquisition channel；It is equipped with wireless collection device in any sound emission acquisition channel and is electrically connected with the wireless collection device
Acoustic emission sensor；It is remote that the sound emission data that the acoustic emission sensor detects pass through the interchanger, client successively
Journey Wi-Fi wireless devices, the long-range Wi-Fi wireless devices of server end, are transferred to the background server, so that the backstage takes
Business device positions acoustic emission source；
Any wireless collection device is built-in with GPS signal reception device, the GPS signal reception device include fpga chip and
GPS antenna, clock synchronizer and the GPS indicator lights being electrically connected with the fpga chip；The GPS signal reception device is for connecing
GPS satellite time calibration onboard clock is received, to realize the time synchronization of each sound emission acquisition channel.
2. the distributed acoustic emission system according to claim 1 synchronized using GPS time, which is characterized in that Ren Yisuo
State the GPS clock that clock synchronizer uses same precision.
3. the distributed acoustic emission system according to claim 1 synchronized using GPS time, which is characterized in that each sound hair
The timing tracking accuracy of acquisition channel is penetrated up to up to 30 μ s, the systematic error caused by GPS zeitgebers is 0.096m.
4. the distributed acoustic emission system according to claim 1 synchronized using GPS time, which is characterized in that the friendship
It changes planes and is wirelessly connected with the multiple sound emission acquisition channel, is electrically connected with the client remote Wi-Fi wireless devices.
5. the distributed acoustic emission system according to claim 1 synchronized using GPS time, which is characterized in that the friendship
It changes planes including multiple multinode access switch, any multinode access switch can at most connect 16 sound emission acquisitions
Channel.
6. the distributed acoustic emission system according to claim 5 synchronized using GPS time, which is characterized in that the clothes
The long-range Wi-Fi wireless devices in device end be engaged in as single node remote exchange or AT5150 type wireless data transceivings base station.
7. the distributed acoustic emission system according to claim 6 synchronized using GPS time, which is characterized in that the visitor
The long-range Wi-Fi wireless devices in family end are identical as the long-range Wi-Fi types of wireless devices of the server end, are single node remote switch
Machine or AT5150 type wireless data transceivings base station.
8. the distributed acoustic emission system according to claim 7 synchronized using GPS time, which is characterized in that the clothes
The peak signal transmission range being engaged between the long-range Wi-Fi wireless devices in device end and client remote Wi-Fi wireless devices is 10 public
In.
9. the distributed acoustic emission system according to claim 1 synchronized using GPS time, which is characterized in that the nothing
Line collector is powered by internal battery, and the interchanger is powered by mobile power.
10. the distributed acoustic emission system according to claim 9 synchronized using GPS time, which is characterized in that the friendship
It changes planes through rated voltage 12V, the mobile power of rated power 8W is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820531378.8U CN207992121U (en) | 2018-04-13 | 2018-04-13 | A kind of distributed acoustic emission system synchronized using GPS time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820531378.8U CN207992121U (en) | 2018-04-13 | 2018-04-13 | A kind of distributed acoustic emission system synchronized using GPS time |
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| CN207992121U true CN207992121U (en) | 2018-10-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738523A (en) * | 2019-01-24 | 2019-05-10 | 西京学院 | A kind of geotechnical engineering wall-rock crack detection method |
| CN112346328A (en) * | 2020-11-24 | 2021-02-09 | 江苏方天电力技术有限公司 | Wireless synchronous acquisition system based on satellite synchronization technology |
| CN114354765A (en) * | 2021-12-02 | 2022-04-15 | 中国核电工程有限公司 | Single-channel acoustic emission signal acquisition device for nuclear power station |
-
2018
- 2018-04-13 CN CN201820531378.8U patent/CN207992121U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738523A (en) * | 2019-01-24 | 2019-05-10 | 西京学院 | A kind of geotechnical engineering wall-rock crack detection method |
| CN109738523B (en) * | 2019-01-24 | 2021-09-14 | 西京学院 | Geotechnical engineering surrounding rock crack detection method |
| CN112346328A (en) * | 2020-11-24 | 2021-02-09 | 江苏方天电力技术有限公司 | Wireless synchronous acquisition system based on satellite synchronization technology |
| CN114354765A (en) * | 2021-12-02 | 2022-04-15 | 中国核电工程有限公司 | Single-channel acoustic emission signal acquisition device for nuclear power station |
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