CN208012639U - Wireless multi-channel vibratory string acquisition system - Google Patents
Wireless multi-channel vibratory string acquisition system Download PDFInfo
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- CN208012639U CN208012639U CN201820407090.XU CN201820407090U CN208012639U CN 208012639 U CN208012639 U CN 208012639U CN 201820407090 U CN201820407090 U CN 201820407090U CN 208012639 U CN208012639 U CN 208012639U
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Abstract
The utility model provides a kind of wireless multi-channel vibratory string acquisition system, including：Multiple vibratory string class sensors；Multichannel vibratory string expander is connect with vibratory string class sensor, and each vibratory string class sensor corresponds to a channel of multichannel vibratory string expander；Wireless single channel vibrating wire acquirer, connect with multichannel vibratory string expander；Wherein, multichannel vibratory string expander includes：Sensor interface array；Analog switch array is connect with sensor interface array；Pumping signal circuit, connect with analog switch array；Single line expanded circuit, for being multiple input output interface by individual signals Interface Expanding, and multiple input output interface is connect with analog switch array；Master interface is connect with the individual signals interface of single line expanded circuit, and is connect with wireless single channel vibrating wire acquirer.This wireless multi-channel vibratory string acquisition system realizes big quantity sensor cluster sampling, reduces the cost and difficulty of construction of monitoring system；System later maintenance work is simple, expense is few.
Description
Technical field
The utility model is related to testing equipment field, more particularly to a kind of wireless multi-channel vibratory string acquisition system.
Background technology
In China, civil engineering accident frequently occurs at present, such as bridge suddenly cave in, house collapse, cause great
Casualties and property loss, caused care and attention of the people for Important Project safety.In addition, China has one
Most of bridge and infrastructure were built in five sixties of 20th century, by use so for many years, their peace
How is full performanceWhether constitute a threat to the people's lives and propertyThese are all the problem of urgently answer.In recent years, earthquake, flood
The natural calamities such as water, storm wind also cause these buildings and structure different degrees of damage；These increasingly cause people's
It pays close attention to.The structural behaviour of civil infrastructure monitor and diagnose in real time, finds the damage of structure in time, and comment
Estimate its safety, the performance change and remaining life of pre- geodesic structure simultaneously make maintenance decision, and the operation to improving engineering structure is imitated
Rate, assuring the safety for life and property of the people has extremely important meaning, has become the more and more urgent requirement of modern project, and
One key areas of civil engineering subject development.Structural healthy monitoring system can acquire the correlation of structure duty status in real time
Data, the position using certain non-destructive tests algorithm judgement damage and degree, the timely and effectively safety of evaluation structure, in advance
The performance change of geodesic structure simultaneously carries out early warning to accident, thus can more fully hold structure building and military service overall process
Stress and damage evolution law, building be to ensure that heavy construction structure is built and be on active service one of the effective means of safety.
The usual number of channels of wireless vibrating wire acquirer currently used in the market is few, equipment cost is high, system stability is poor
Many later maintenance costs can also be increased.
Utility model content
The utility model provides a kind of wireless multi-channel vibratory string acquisition system, realizes big quantity sensor cluster sampling, reduces
The cost and difficulty of construction of monitoring system；System later maintenance work is simple, expense is few.
A kind of wireless multi-channel vibratory string acquisition system that the utility model embodiment provides, including：
Multiple vibratory string class sensors；
Multichannel vibratory string expander is connect with the vibratory string class sensor, and each vibratory string class sensor corresponds to institute
State a channel of multichannel vibratory string expander；
Wireless single channel vibrating wire acquirer, connect with the multichannel vibratory string expander；
Wherein, the multichannel vibratory string expander includes：
Sensor interface array, for connecting multiple vibratory string class sensors, each sensing of the sensor interface array
Device interface corresponds to a channel of multichannel vibratory string expander；
Analog switch array is connect with the sensor interface array, for selecting the sensor interface array wherein
One sensor interface conducting；
Pumping signal circuit is connect with the analog switch array, is shaken for weak swept-frequency signal to be enlarged into described in excitation
The strong swept-frequency signal of string class sensor；
Single line expanded circuit, for being multiple input output interface, and multiple inputs by individual signals Interface Expanding
Output interface is connect with the analog switch array；
Master interface is connect with the individual signals interface of the single line expanded circuit, and with the wireless single-pass
Road vibrating wire acquirer connection.
In one embodiment, wireless single channel vibrating wire acquirer includes：
Acquisition interface, the master interface for connecting the multichannel vibratory string expander.
In one embodiment, vibratory string class sensor includes：Strain transducer, crack sensors, displacement sensor, pulling force
Sensor, the combination of osmotic pressure sensor one or more of which.
In one embodiment, wireless single channel vibrating wire acquirer further includes：Communication module, for logical with the server
News connection；
The communication module includes：Bluetooth module, NFC module, WIFI module, infrared module, GPRS module, 3/4G moulds
Any one or more combination in block, radio station module, 2.4G wireless modules.
In one embodiment, wireless single channel vibrating wire acquirer further includes：
Signal conditioning circuit is connect with the acquisition interface, the vibratory string for acquiring the multichannel vibratory string expander
Signal is amplified, filters and Shape correction, and the vibratory string signal is converted to positive square-wave signal；
Signal exciting circuit is connect with the acquisition interface, the swept-frequency signal for exporting predeterminated frequency range；
Central processing unit is connect with the signal exciting circuit, signal conditioning circuit, communication module, for exciting excitation
The positive square-wave signal that signal and capture return, the service is sent to by the communication module by the positive square-wave signal
Device.
This wireless multi-channel vibratory string acquisition system opens up single channel vibrating wire acquirer using multichannel vibratory string collector
Exhibition makes single channel vibrating wire acquirer by that can only acquire the signal of a vibrating wire sensor originally, and multiple shake can be acquired by being changed into
The signal of chord sensor reduces entire prison relative to using multiple single channel vibrating wire acquirers to acquire these sensor signals
The cost and difficulty of construction of examining system；And the later maintenance work of opposite entire monitoring system is simple, expense is few.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is realized and is obtained in the specification, claims and attached drawing write.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not constitute limitations of the present invention together.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of wireless multi-channel vibratory string acquisition system in the utility model embodiment；
Fig. 2 is a kind of schematic diagram of multichannel vibratory string expander in the utility model embodiment；
Fig. 3 is a kind of schematic diagram of wireless single channel vibrating wire acquirer in the utility model embodiment.
Specific implementation mode
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
The utility model embodiment provides a kind of wireless multi-channel vibratory string acquisition system, as shown in Figure 1, including：
Multiple vibratory string class sensors 1；
Multichannel vibratory string expander 2 is connect with vibratory string class sensor 1, and each vibratory string class sensor 1 corresponds to multichannel and shakes
One channel of string expander 2；
Wireless single channel vibrating wire acquirer 3, connect with multichannel vibratory string expander 2；
Above-mentioned wireless multi-channel vibratory string acquisition system, using multichannel vibratory string collector to wireless single channel vibrating wire acquirer
It is expanded, makes wireless single channel vibrating wire acquirer by the signal of a vibratory string class sensor can only be acquired originally, being changed into can
To acquire the signal of multiple vibratory string class sensors, these sensings are acquired relative to using multiple wireless single channel vibrating wire acquirers
Device signal entirely monitors the cost and difficulty of construction of system to reduce；And the later maintenance work of opposite entire monitoring system
Simply, expense is few.
Above-mentioned wireless multi-channel vibratory string acquisition system, wherein multichannel vibratory string expander support multiple sensor to access simultaneously
Collecting device.Multichannel vibratory string expander supports most vibratory string class sensors on the market, and multichannel vibratory string expander is using primary
Property battery powered, extremely low power dissipation design, battery free of replacement can be used 5 years or more.
Wireless single channel vibrating wire acquirer can control each channel sensor signal access of multichannel vibratory string expander, pass through
Polling mode samples each channel sensor signal data of expander, and supports automatic decision function, i.e., whether each channel has connect
Entering sensor can be by circuit automatic decision.Wireless single channel vibrating wire acquirer is connected with the communication of server 4, will be collected each
Channel data is sent to server 4, while can receive and send instructions under server 4, supports manual mode and automatic mode
Two kinds of acquisition modes make acquisition system use more flexible.
Server 4 is responsible for the parsing of 1 data of vibratory string class sensor, calculates and shows.By being adopted with wireless single channel vibratory string
Collect instrument 3 to communicate, 1 data of vibratory string class sensor will be received corresponds to the measured point of actual field, carry out model analysis, calculate simultaneously
Provide structural health data.
Wherein, as shown in Fig. 2, multichannel vibratory string expander 2 includes：
Sensor interface array 21, for connecting multiple vibratory string class sensors, each sensor of sensor interface array
Interface corresponds to a channel of multichannel vibratory string expander；
Analog switch array 22 is connect with sensor interface array 21, for selecting sensor interface array 21 wherein one
A sensor interface conducting；
Pumping signal circuit 23 is connect with analog switch array 22, for weak swept-frequency signal to be enlarged into excitation vibratory string class
The strong swept-frequency signal of sensor；
Single line expanded circuit 24, for being multiple input output interface by individual signals Interface Expanding, and multiple input is defeated
Outgoing interface is connect with analog switch array 22；
Master interface 25 is connect with the individual signals interface of single line expanded circuit 24, and is adopted with wireless single channel vibratory string
Collect instrument connection.
Above-mentioned multichannel vibratory string expander, wherein sensor interface are the interface array in multiple channels, can access multiple shake
String class sensor；It realizes a large amount of vibratory string class sensor cluster samplings, reduces the cost and difficulty of construction of monitoring system.Analog switch
Array is the control by wireless single channel Acquisition Instrument by the vibratory string class sensor in multiple channels, selects one of channel conductive
Laggard row energization and signal acquisition, the data for acquiring the vibratory string class sensor in multiple channels are acquired by polling mode.Excitation
Signal circuit, which is the faint swept-frequency signal amplification for sending over wireless single channel vibrating wire acquirer, to be become and can be sensed for vibratory string class
The strong swept-frequency signal of device excitation, the vibratory string class sensor in some selected channel is sent to by analog switch array.It is single
Line expanded circuit is used to individual signals Interface Expanding be multiple input output interface, and multiple input output interface is opened with simulation
Array connection is closed, to realize the handoff functionality of analog switch array.
In order to be connect with multichannel vibratory string expander, as shown in figure 3, in one embodiment, wireless single channel vibratory string is adopted
Collecting instrument includes：
Acquisition interface 31 is used for the master interface of connecting multi-channel vibratory string expander.
Optionally, wireless single channel vibrating wire acquirer can also include signal switching circuit 32, be connect with acquisition interface 31,
For selecting to be that wireless single channel vibrating wire acquirer single channel sampling or connecting multi-channel vibratory string expander carry out multichannel and adopt
Sample.
In one embodiment, vibratory string class sensor includes：Strain transducer, crack sensors, displacement sensor, pulling force
Sensor, the combination of osmotic pressure sensor one or more of which.
To realize the communication of wireless multi-channel vibratory string acquisition system and external device, as shown in figure 3, in one embodiment
In, wireless single channel vibrating wire acquirer further includes：Communication module 33 is connected for being communicated with server；
Communication module 33 includes：Bluetooth module, NFC module, WIFI module, infrared module, GPRS module, 3/4G modules,
Any one or more combination in radio station module, 2.4G wireless modules.
In one embodiment, as shown in figure 3, wireless single channel vibrating wire acquirer further includes：
Signal conditioning circuit 34 is connect with acquisition interface 31, the vibratory string signal for acquiring multichannel vibratory string expander
It is amplified, filters and Shape correction, vibratory string signal is converted into positive square-wave signal；
Signal exciting circuit 35, connect with acquisition interface, and the excitation for frequency sweep for exporting predeterminated frequency range is believed
Number；
Central processing unit 36 is connect with signal exciting circuit 35, signal conditioning circuit 34, communication module 33, for exciting
The positive square-wave signal that pumping signal and capture return, server is sent to by communication module 33 by positive square-wave signal.
Above-mentioned wireless single channel vibrating wire acquirer, wherein signal exciting circuit are used to export the frequency sweep letter of predeterminated frequency range
Number, it is triggered into row energization to multiple vibratory string class sensors of multichannel vibratory string expander connection, vibratory string class sensor will after triggering
Return to small-signal.The signal of return is amplified by signal conditioning circuit, filtering, and Shape correction exports for centre
Manage the positive square-wave signal of device identification.The positive square-wave signal is sent to server by central processing unit by communication module.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (5)
1. a kind of wireless multi-channel vibratory string acquisition system, which is characterized in that including：
Multiple vibratory string class sensors；
Multichannel vibratory string expander is connect with the vibratory string class sensor, and each vibratory string class sensor correspond to it is described more
One channel of channel vibratory string expander；
Wireless single channel vibrating wire acquirer, connect with the multichannel vibratory string expander；
Wherein, the multichannel vibratory string expander includes：
Sensor interface array, for connecting multiple vibratory string class sensors, each sensor of the sensor interface array connects
One channel of the corresponding multichannel vibratory string expander of mouth；
Analog switch array is connect with the sensor interface array, for select the sensor interface array one of them
Sensor interface is connected；
Pumping signal circuit is connect with the analog switch array, for weak swept-frequency signal to be enlarged into the excitation vibratory string class
The strong swept-frequency signal of sensor；
Single line expanded circuit, for being multiple input output interface, and multiple input and output by individual signals Interface Expanding
Interface is connect with the analog switch array；
Master interface is connect with the individual signals interface of the single line expanded circuit, and is shaken with the wireless single channel
String Acquisition Instrument connects.
2. the system as claimed in claim 1, which is characterized in that the wireless single channel vibrating wire acquirer includes：
Acquisition interface, the master interface for connecting the multichannel vibratory string expander.
3. the system as claimed in claim 1, which is characterized in that the vibratory string class sensor includes：Strain transducer, crack pass
Sensor, displacement sensor, pulling force sensor, the combination of osmotic pressure sensor one or more of which.
4. the system as claimed in claim 1, which is characterized in that the wireless single channel vibrating wire acquirer further includes：Communicate mould
Block is connected for being communicated with server；
The communication module includes：Bluetooth module, NFC module, WIFI module, infrared module, GPRS module, 3/4G modules, electricity
Any one or more combination in platform module, 2.4G wireless modules.
5. system as claimed in claim 2, which is characterized in that the wireless single channel vibrating wire acquirer further includes：
Signal conditioning circuit is connect with the acquisition interface, the vibratory string signal for acquiring the multichannel vibratory string expander
It is amplified, filters and Shape correction, the vibratory string signal is converted into positive square-wave signal；
Signal exciting circuit is connect with the acquisition interface, the swept-frequency signal for exporting predeterminated frequency range；
Central processing unit is connect with the signal exciting circuit, signal conditioning circuit, communication module, for exciting pumping signal
The positive square-wave signal returned with capture, server is sent to by the communication module by the positive square-wave signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820407090.XU CN208012639U (en) | 2018-03-23 | 2018-03-23 | Wireless multi-channel vibratory string acquisition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820407090.XU CN208012639U (en) | 2018-03-23 | 2018-03-23 | Wireless multi-channel vibratory string acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888370A (en) * | 2019-12-06 | 2020-03-17 | 江苏摩立特科技有限公司 | Micro-power consumption multifunctional integrated data acquisition unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888370A (en) * | 2019-12-06 | 2020-03-17 | 江苏摩立特科技有限公司 | Micro-power consumption multifunctional integrated data acquisition unit |
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