CN105894784A - Ethernet based minisize module for conditioning and acquiring dynamic strain - Google Patents
Ethernet based minisize module for conditioning and acquiring dynamic strain Download PDFInfo
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- CN105894784A CN105894784A CN201410559324.9A CN201410559324A CN105894784A CN 105894784 A CN105894784 A CN 105894784A CN 201410559324 A CN201410559324 A CN 201410559324A CN 105894784 A CN105894784 A CN 105894784A
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- strain
- ethernet
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- strain signal
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Abstract
The invention discloses an Ethernet based minisize module for conditioning and acquiring dynamic strain. The module comprises a strain signal input interface; the strain signal input interface is connected to a strain signal conditioning/acquiring module in series connection; the strain signal conditioning/acquiring module is connected to a master control unit in series connection; the master control unit is separately connected to a GPS time service and clock synchronization module, an Ethernet data transmission module and an Ethernet power supply module in series connection; the Ethernet power supply module is connected to the Ethernet data transmission module, and the Ethernet data transmission module and the Ethernet power supply module are connected to one Ethernet interface. The module has the beneficial effects that the module has the advantages of small volume, low cost and stable performance; the module can be directly installed near a strain gage at a monitoring point, and a metal casing is used for sealing and packaging the module; the module can be used for large scale networking in order to establish a large-scale synchronous dynamic strain monitoring system, and the module has large market spaces and engineering application prospects.
Description
Technical field
The present invention relates to electronic information technical field, particularly relate to a kind of based on Ethernet miniature dynamically should
Modified tone reason acquisition module.
Background technology
The conditioning acquisition technique of resistance-type dynamic strain is used till today, and basic framework is the most all that foil gauge is connect
On a bridge box, form a strain bridge with the resistance in bridge box, the most again by a multicore cable handle
Strain bridge signal is sent to strain signal conditioning Acquisition Instrument, and strain signal conditioning Acquisition Instrument adjusts strain signal
After reason, A/D are converted to digital signal, being transferred to computer, wherein a deformeter typically can meet 8-16
Road dynamic strain signal.
The when of use at the scene, bridge box is generally placed upon near the monitoring point of equipment under test, and dynamic strain letter
Number computer side that is generally placed upon in workplace of conditioning Acquisition Instrument, the collection of bridge box to dynamic strain signal condition
Instrument is distant, and dynamic strain signal is analogue signal, multicore cable self-resistance, has decay to make to signal
With, the balance of strain bridge is also had a certain impact simultaneously, be additionally easily subject to the various electromagnetism of test site
Interference distortion, brings inevitably impact to test accuracy；The most existing dynamic strain signal condition is adopted
Collection instrument volume is the biggest, carrying inconvenience, in the case of once collection point is very many, pacifies to field instrumentation
Dress is put, and installation work brings inconvenience in the majority.
Summary of the invention
It is an object of the invention to provide a kind of miniature dynamic strain based on Ethernet conditioning acquisition module,
To overcome currently available technology above shortcomings.
It is an object of the invention to be achieved through the following technical solutions:
A kind of miniature dynamic strain based on Ethernet conditioning acquisition module, including
Strain signal conditioning/acquisition module: the power supply of strain bridge, the amplification of strain signal, filter are provided
Ripple, analog digital conversion；
GPS time service synchronised clock module: the synchronised clock of the analog digital conversion between offer module, allows whole
Synchronize between the module of each dynamic strain signal condition in individual system, it is simple to the later stage is for for the moment
Between the data analysis of strain signal of point each strain monitoring point upper；
Ethernet data transport module: the digital data transmission after strain modulus being changed is to host computer；
POE module: while a netting twine completes data transmission, and as power supply；
Also include that strain signal input interface, described strain signal input interface are connected in series with strain letter
Number conditioning/acquisition module, described strain signal conditioning/acquisition module is connected in series with main control unit, described
Main control unit is connected in series with GPS time service synchronised clock module respectively, Ethernet data transport module and
POE module, wherein, described POE module connects Ethernet data transport module,
And described Ethernet data transport module and POE module are connected to same Ethernet interface
On.
Further, described strain signal conditioning/acquisition module is connected with POE module.
Further, described GPS time service synchronised clock module connects antenna.
Further, described GPS time service synchronised clock module is connected with POE module.
Further, described strain signal conditioning/acquisition module, GPS time service synchronised clock module, with
Too to be equipped with the metal matched close for network data transport module, POE module and main control unit
Envelope shell.
The invention have the benefit that this module has volume little, low cost, the advantage of stable performance, can
Being directly installed near the foil gauge of monitoring point, and use metal shell hermetically sealed, module is strain signal
After conditioning gathers, the directly output discernible digital signal of computer, is a kind of novel, practical dynamically should
Modified tone reason acquisition technique, not only well solves current dynamic strain signal condition measurement device body long-pending big, existing
Difficult wiring, signal is easily subject to the problems such as interference, and can networking on a large scale, set up large-scale,
The dynamic strain monitoring system synchronized, has the huge market space and future in engineering applications.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Some embodiments of the present invention, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that a kind of based on Ethernet miniature dynamic strain conditioning according to embodiments of the present invention gathers mould
The structural representation of block.
In figure:
1, strain signal input interface；2, strain signal conditioning/acquisition module；3, GPS time service synchronizes
Clock module；4, main control unit；5, Ethernet data transport module；6, POE module；7、
Ethernet interface；8, antenna.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art obtained all its
His embodiment, broadly falls into the scope of protection of the invention.
According to embodiments of the invention, it is provided that the conditioning of a kind of miniature dynamic strain based on Ethernet gathers
Module.
As it is shown in figure 1, a kind of based on Ethernet miniature dynamic strain conditioning according to embodiments of the present invention
Acquisition module, including:
Strain signal conditioning/acquisition module 2: provide the power supply of strain bridge, the amplification of strain signal,
Filtering, analog digital conversion；
GPS time service synchronised clock module 3: the synchronised clock of the analog digital conversion between offer modules,
Allow and synchronize between the module of each dynamic strain signal condition in whole system, it is simple to the later stage for
The data analysis of the strain signal of each strain monitoring point on one time point；
Ethernet data transport module 5: the digital data transmission after strain modulus being changed is to host computer；
While 6: netting twines of POE module complete data transmission, and as power supply；
Including strain signal input interface 1, described strain signal input interface 1 is connected in series with strain
Signal condition/acquisition module 2, described strain signal conditioning/acquisition module 2 is connected in series with main control unit
4, described main control unit 4 is connected in series with GPS time service synchronised clock module 3, Ethernet data respectively
Transport module 5 and POE module 6, wherein, described POE module 5 connects ether
Network data transport module 6, and described Ethernet data transport module 5 and POE module 6
Being connected on same Ethernet interface 7, described Ethernet data transport module 5 can be strain mould
Digital data transmission after number conversion has transmission range to host computer, Ethernet data transport module 5
Far, the advantage such as strong interference immunity.
Described strain signal conditioning/acquisition module 2 is connected with POE module 6；Described GPS
Time service synchronised clock module 3 connects antenna 8；Described GPS time service synchronised clock module 3 and ether
Net supply module 6 is connected；Described strain signal conditioning/acquisition module 2, GPS time service synchronised clock
Module 3, Ethernet data transport module 5, POE module 6 and main control unit 4 are equipped with
The metal sealing shell matched.
During specific works, it is connected to the Ethernet interface 7 of the present invention by one end of a netting twine, separately
One end is plugged on ethernet router or switch corresponding port that band POE powers, then with this
The exterior terminal equipment that ethernet router or switch connect just can by Ethernet interface 7 and
The Ethernet data transport module 5 of the present invention carries out data transmission, accesses and controls.
The Etherloop that the band POE that POE module 6 is connected by Ethernet interface 7 powers by
The power supply that device or switch provide converts out direct current 1.8V, 3.3V, 5V, ± 12V power supply again, gives
In the present invention, each functional module provides power supply.The strain signal needing test detection passes through strain signal
Input interface 1 is input to strain signal conditioning/acquisition module 2, because signal is the faintest and is easily subject to
The aliasing noise to various interference, therefore, in strain signal conditioning/acquisition module 2, signal is first
150 times are amplified by the difference amplifier chip AD8226ARMZ of preposition high impedance low noise, with
Improve the resolving accuracy during A/D data acquisition of rear end, then by eight rank Butterworth type switching capacities
Formula active low-pass filter MAX291ESA filters noise, and filtered signal is by zeroing circuit again
The A/D chip AD7606BSTZ-4 entering 16bit resolution is converted to strain signal the number of correspondence
Word signal.Wherein the frequency filtering of MAX291ESA, AD7606BSTZ-4 sample frequency permissible
Arranged by exterior terminal equipment autonomously.The data conversion of the AD7606BSTZ-4 between modules
Synchronizing to be controlled by GPS time service synchronised clock module 3, described main control unit 4 is responsible for other each merits
Can the work such as control between module, coordination, data transmission.
By above connected mode, the present invention has the effect that
1, the present invention has overturned the mode of conventional dynamic strain conditioning acquisition instrument, uses modularized design,
Each dynamic strain from nurse one's health to gather again to Ethernet data transmission and power supply, all have a style of one's own, each
Module has independent IP address, can be with unlimited number of network module for dynamic strain synchronous monitoring system
Unite or be used alone；Along with the progressively foundation of Internet of Things, this dynamic strain conditioning acquisition mode will be future
A kind of development trend；
2, GPS time service synchronised clock technology is utilized, it is possible to achieve the dynamic strain of unlimited number of module composition
Collection between each module in monitoring system synchronizes；
3, a netting twine is utilized to be simultaneously achieved the key function such as ethernet communication, POE；Netting twine
It is easy to make, and standardization already, greatly facilitate field wiring, allow user be easier to accept, just
Popularization and application in this module；
4, sensing technology miniaturization is the certainty of technology development；The huge conditioning of complexity, collection, communication,
In the module that the slight bridge box of the circuit miniaturization such as power supply to is big, such foil gauge can low coverage as far as possible
From receive bridge box, strain signal through conditioning, gather, be transferred to computer is digital signal, maximum
The signal that decreases of degree is subject to the chance of on-the-spot electromagnetic interference.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (5)
1. miniature dynamic strain based on an Ethernet conditioning acquisition module, it is characterised in that include
Strain signal conditioning/acquisition module (2): the power supply of strain bridge, the putting of strain signal are provided
Greatly, filtering, analog digital conversion；
GPS time service synchronised clock module (3): the synchronised clock of the analog digital conversion between offer module,
Allow and synchronize between the module of each dynamic strain signal condition in whole system, it is simple to the later stage for
The data analysis of the strain signal of each strain monitoring point on one time point；
Ethernet data transport module (5): the digital data transmission after strain modulus being changed is to upper
Machine；
POE module (6): while a netting twine completes data transmission, and as power supply electricity
Source；
Also including strain signal input interface (1), the series connection of described strain signal input interface (1) is even
Being connected to strain signal conditioning/acquisition module (2), described strain signal conditioning/acquisition module (2) is connected
Connect and have main control unit (4), described main control unit (4) to be connected in series with GPS time service synchronization respectively
Clock module (3), Ethernet data transport module (5) and POE module (6), wherein,
Described POE module (5) connects Ethernet data transport module (6), and described ether
Network data transport module (5) and POE module (6) are connected to same Ethernet interface (7)
On.
Miniature dynamic strain collection modulation module based on Ethernet the most according to claim 1,
It is characterized in that, described strain signal conditioning/acquisition module (2) and POE module (6) phase
Connect.
Miniature dynamic strain based on Ethernet the most according to claim 1 conditioning acquisition module,
It is characterized in that, described GPS time service synchronised clock module (3) connects antenna (8).
Miniature dynamic strain based on Ethernet the most according to claim 1 conditioning acquisition module,
It is characterized in that, described GPS time service synchronised clock module (3) and POE module (6) phase
Connect.
5. nurse one's health according to based on Ethernet the miniature dynamic strain described in claim 1-4 any one
Acquisition module, it is characterised in that described strain signal conditioning/acquisition module (2), GPS time service are together
Step clock module (3), Ethernet data transport module (5), POE module (6) and
Main control unit (4) is equipped with the metal sealing shell matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559324.9A CN105894784A (en) | 2014-10-21 | 2014-10-21 | Ethernet based minisize module for conditioning and acquiring dynamic strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559324.9A CN105894784A (en) | 2014-10-21 | 2014-10-21 | Ethernet based minisize module for conditioning and acquiring dynamic strain |
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| Publication Number | Publication Date |
|---|---|
| CN105894784A true CN105894784A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410559324.9A Pending CN105894784A (en) | 2014-10-21 | 2014-10-21 | Ethernet based minisize module for conditioning and acquiring dynamic strain |
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| CN201402520Y (en) * | 2009-05-14 | 2010-02-10 | 长安大学 | Bridge strain collecting instrument based on wireless sensing network interface |
| CN102628717A (en) * | 2012-04-20 | 2012-08-08 | 北京必创科技有限公司 | Strain type wireless sensor |
| CN202372325U (en) * | 2011-11-08 | 2012-08-08 | 山西省交通科学研究院 | Vibration and static and dynamic strain signal wireless data acquisition system for bridge |
| CN202523190U (en) * | 2012-02-06 | 2012-11-07 | 宁波凯思特安防科技有限公司 | Security alarm system based on Ethernet transmission alarm events |
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| CN202998332U (en) * | 2012-11-27 | 2013-06-12 | 中环天仪股份有限公司 | Embedded video transmission module based on Ethernet |
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2014
- 2014-10-21 CN CN201410559324.9A patent/CN105894784A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804921A (en) * | 2006-01-20 | 2006-07-19 | 东北大学 | Distributed network data acquisition apparatus |
| CN201402520Y (en) * | 2009-05-14 | 2010-02-10 | 长安大学 | Bridge strain collecting instrument based on wireless sensing network interface |
| CN202372325U (en) * | 2011-11-08 | 2012-08-08 | 山西省交通科学研究院 | Vibration and static and dynamic strain signal wireless data acquisition system for bridge |
| CN202523190U (en) * | 2012-02-06 | 2012-11-07 | 宁波凯思特安防科技有限公司 | Security alarm system based on Ethernet transmission alarm events |
| CN102628717A (en) * | 2012-04-20 | 2012-08-08 | 北京必创科技有限公司 | Strain type wireless sensor |
| CN202841542U (en) * | 2012-09-21 | 2013-03-27 | 山东锋士自动化系统有限公司 | Data acquisition transmission terminal of water conservancy Internet of things |
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Application publication date: 20160824 |