CN208190609U - A kind of acoustic emission signal adapting amplifier device - Google Patents
A kind of acoustic emission signal adapting amplifier device Download PDFInfo
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- CN208190609U CN208190609U CN201820853557.3U CN201820853557U CN208190609U CN 208190609 U CN208190609 U CN 208190609U CN 201820853557 U CN201820853557 U CN 201820853557U CN 208190609 U CN208190609 U CN 208190609U
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- emission signal
- bandpass filter
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Abstract
This application involves a kind of acoustic emission signal adapting amplifier devices, belong to signal amplifying apparatus field.The application includes shell, configures sensor interface, the first switching selection switch and signal output interface on shell, and the first amplifier, multiple bandpass filters and the second amplifier of configuration in the housing；Sensor interface is electrically connected with the first amplifier in；The output end of first amplifier is electrically connected by the first switching switch with the input terminal of multiple bandpass filters；The output end of multiple bandpass filters is electrically connected with the input terminal of the second amplifier；The output end of second amplifier is electrically connected with signal output interface.In acoustic emission signal adapting amplifier device provided by the present application, the selection of the switching to filter in frequency domain can be formed by the first switching selection switch, realizing the application has the selection of multiple filter in frequency domain, so that the application be enable preferably to adapt to various acoustic emission signal detection scenes.
Description
Technical field
The application belongs to signal amplifying apparatus field, and in particular to a kind of acoustic emission signal adapting amplifier device.
Background technique
Acoustic emission testing technology is as a kind of lossless detection method, and it is especially suitable for the dynamic securities of mechanical equipment structure
Detection, monitoring, Integrity Assessment etc..Acoustic emission testing technology receives acoustic emission signal using acoustic emission sensor, to received
Acoustic emission signal is analyzed to obtain testing result.
In actually detected application, the voltage signal of acoustic emission sensor output is sometimes as little as several microvolts, faint signal
It is highly prone to interfere when transmission, if the transmission through long-distance, signal-to-noise ratio must be reduced.Thus need in the related art pair
The voltage signal of acoustic emission sensor output carries out relevant treatment, for example is filtered, in specific signal processor, filter
Wave device be it is configured good, filter in frequency domain is fixed, and in practical applications, the acoustical signal frequency that acoustic emission sensor receives
Range be it is uncertain, when the acoustical signal frequency range that acoustic emission sensor receives exceed filter in frequency domain when, filter can be protected
The noise signal other than processor frequencies range is stayed, the noise signal other than frequency range will form the analysis of acoustic emission signal
A degree of interference.
Utility model content
To be overcome the problems, such as present in the relevant technologies at least to a certain extent, before the application provides a kind of acoustic emission signal
Set amplifying device.
In order to achieve the above object, the application adopts the following technical scheme that
A kind of acoustic emission signal adapting amplifier device, comprising: shell configures sensor interface on the housing,
One switching selection switch and signal output interface, and configure the first amplifier, multiple bandpass filters in the shell
With the second amplifier；
The sensor interface is electrically connected with first amplifier in；
The input that the output end of first amplifier passes through the first switching switch and the multiple bandpass filter
End electrical connection；
The output end of the multiple bandpass filter is electrically connected with the input terminal of second amplifier；
The output end of second amplifier is electrically connected with the signal output interface.
Further, second amplifier includes the first input pin, the second input pin and multiple gain pins；
The acoustic emission signal adapting amplifier device further includes the second switching switch, and the second switching switchgear distribution is in institute
It states on shell；
The output end of the multiple bandpass filter is electrically connected with first input pin of second amplifier；
Second input pin of second amplifier passes through the second switching switch and second amplifier
The multiple gain pin electrical connection.
Further, the acoustic emission signal adapting amplifier device further includes third amplifier, and the third amplifier is matched
It sets in the shell, the input terminal of the third amplifier is electrically connected with the signal output interface, the third amplifier
Output end be electrically connected with the sensor interface.
Further, the third amplifier is power amplifier.
Further, there are four the multiple bandpass filters, respectively the first bandpass filter, the second bandpass filtering
Device, third bandpass filter and the 4th bandpass filter.
Further, the filter range of first bandpass filter is 20KHz-1200KHz, second bandpass filtering
The filter range of device is 100KHz-400KHz, and the filter range of the third bandpass filter is 20KHz-120KHz, described the
The filter range of four bandpass filters is 1KHz-40KHz.
Further, there are three the multiple gain pins of second amplifier, respectively the first gain pin,
Two gain pins and third gain pin.
Further, the first gain pin is 20dB gain pin, and the second gain pin is 40dB gain tube
Foot, the third gain pin are 60dB gain pin.
Further, the shell is made of aluminium alloy.
Further, the sensor interface and the signal output interface are located at the two sides of the shell.
The application use above technical scheme, at least have it is following the utility model has the advantages that
In acoustic emission signal adapting amplifier device provided by the present application, the first amplifier by the first switching selection switch with
Multiple bandpass filter connections, multiple bandpass filters can configure different filter in frequency domain, can by the first switching selection switch
It forms the switching to filter in frequency domain to select, realizes that the application has the selection of multiple filter in frequency domain, to keep the application preferable
Ground adapts to various acoustic emission signals and detects scene.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the acoustic emission signal adapting amplifier device that the application one embodiment provides；
Fig. 2 is the operation principle schematic diagram for the acoustic emission signal adapting amplifier device that the application one embodiment provides；
In figure,
1- shell；2- sensor interface；The first switching selection switch of 3-；4- signal output interface；The first amplifier of 5-；6-
Multiple bandpass filters；The second amplifier of 7-；8- acoustic emission sensor；9- acoustic emission signal capture card；The switching of 10- second is opened
It closes；11- third amplifier；
The first bandpass filter of 601-；The second bandpass filter of 602-；603- third bandpass filter；The 4th band logical of 604-
Filter；
The first input pin of 701-；The second input pin of 702-；
7001- the first gain pin；7002- the second gain pin；7003- third gain pin.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, the technical solution of the application will be carried out below
Detailed description.Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Base
Embodiment in the application, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the application is protected.
Fig. 1 is the structural schematic diagram for the acoustic emission signal adapting amplifier device that the application one embodiment provides, and Fig. 2 is this
Apply for the operation principle schematic diagram for the acoustic emission signal adapting amplifier device that one embodiment provides；As depicted in figs. 1 and 2, should
Acoustic emission signal adapting amplifier device includes:
Shell 1 configures sensor interface 2, the first switching selection switch 3 and signal output interface on the shell 1
4, and configure the first amplifier 5, multiple bandpass filters 6 and the second amplifier 7 in the shell 1；
The sensor interface 2 is electrically connected with 5 input terminal of the first amplifier；
The output end of first amplifier 5 is switched defeated with the multiple bandpass filter 6 by first switching
Enter end electrical connection；
The output end of the multiple bandpass filter 6 is electrically connected with the input terminal of second amplifier 7；
The output end of second amplifier 7 is electrically connected with the signal output interface 4.
Above scheme is connected to sensor interface 2 in a particular application, by the interface of acoustic emission sensor 8, and sound emission is believed
The interface of number capture card 9 is connected to signal output interface 4, and user can carry out micro-judgment by acquiring scene to acoustical signal, pass through
The switching of first switching selection switch 3 selects one in multiple bandpass filters 6, then carries out acoustic emission signal acquisition process,
Detailed process are as follows: received acoustical signal is converted to electric signal by external acoustic emission sensor 8, is then sent to the first amplifier
5, the first amplifier 5 plays the role of pre-amplifier, can convert electricity for the sound emission charge signal that acoustic emission sensor 8 transmits
Pressure signal simultaneously amplifies signal.Signal after enhanced processing inputs to selected bandpass filter 6 and carries out frequency domain filtering, band logical
Filter 6, which can effectively filter out, to be not intended to retain noise signal, improves the signal-to-noise ratio of useful signal.Through 6 frequency domain of bandpass filter
Filtered signal inputs to the second amplifier 7, and the second amplifier 7 plays gain amplification, carries out gain amplification to signal
Processing, and external acoustic emission signal capture card 9 is sent to by signal output interface 4.
As soon as an acoustic emission signal acquisition process is carried out alternatively, being also possible to every selection bandpass filter 6, thus
Obtain multiple treated acoustical signals, can treated that acoustical signal is compared to multiple, and make optimal selection.
As shown in Fig. 2, there are four the multiple bandpass filters 6 in one embodiment of the application, respectively first
Bandpass filter 601, the second bandpass filter 602, third bandpass filter 603 and the 4th bandpass filter 604.Specifically,
In one embodiment, the filter range of first bandpass filter 601 is 20KHz-1200KHz, the second band logical filter
The filter range of wave device 602 is 100KHz-400KHz, and the filter range of the third bandpass filter 603 is 20KHz-
120KHz, the filter range of the 4th bandpass filter 604 are 1KHz-40KHz.
Scheme through the foregoing embodiment, it is to be understood that in acoustic emission signal adapting amplifier device provided by the present application,
First amplifier 5 is connect by the first switching selection switch 3 with multiple bandpass filters 6, and multiple bandpass filters 6 are configurable not
Same filter in frequency domain can form the selection of the switching to filter in frequency domain by the first switching selection switch 3, it is more to realize that the application has
The selection of a filter in frequency domain, so that the application be enable preferably to adapt to various acoustic emission signal detection scenes.
As shown in Fig. 2, in one embodiment, second amplifier 7 is inputted including the first input pin 701, second
Pin 702 and multiple gain pins；
The acoustic emission signal adapting amplifier device further includes the second switching switch 10, and the second switching switch 10 configures
On the shell 1；
The output end of the multiple bandpass filter 6 and first input pin 701 of second amplifier 7 are electrically connected
It connects；
Second input pin 702 of second amplifier 7 passes through the second switching switch 10 and described second
The multiple gain pin of amplifier 7 is electrically connected.
By the example scheme, it can be formed and be selected by second 10 pairs of switch multiple gain pins of switching, passed through
The switching of second switching selection switch selects one in multiple gain pins, then the second amplifier 7 output selected gain
The output of gain representated by pin.By the example scheme, it can be achieved that the increasing of the application acoustic emission signal adapting amplifier device
Benefit output is controllable, to meet the needs of different transmission ranges, such as transmission range farther out when, select high-gain to export.
As shown in Fig. 2, in one embodiment, there are three the multiple gain pins of second amplifier 7, respectively
For the first gain pin 7001, the second gain pin 7002 and third gain pin 7003.In a specific embodiment, institute
Stating the first gain pin 7001 is 20dB gain pin, and the second gain pin 7002 is 40dB gain pin, the third
Gain pin 7003 is 60dB gain pin.
As shown in Fig. 2, in one embodiment, the acoustic emission signal adapting amplifier device further includes third amplifier
11, in the shell 1, input terminal and the signal output of the third amplifier 11 are connect for the configuration of third amplifier 11
Mouth 4 is electrically connected, and the output end of the third amplifier 11 is electrically connected with the sensor interface 2.
With this solution, the interface of acoustic emission sensor 8 is connected to sensor interface 2, by acoustic emission signal capture card 9
Interface is connected to signal output interface 4, and when acoustic emission signal capture card 9 is connected to external control devices, external control devices can pass through
Acoustic emission signal capture card 9 sends control signal, after which is amplified by third amplifier 11, is transported to sound emission biography
Sensor 8, driving acoustic emission sensor 8 issue sound emission mechanical shock signals, which can be used for simulating
The receiving sensitivity of other adjacent acoustic emission sensors 8 is tested in acoustic emission signal source.In one embodiment, the third is put
Big device 11 is power amplifier.
In one embodiment, the shell 1 is made of aluminium alloy.It is dry that metal shell 1 can be used for shielding extraneous electromagnetism
It disturbs, the protective capability with anti-surge.
As shown in Figure 1, in one embodiment, the sensor interface 2 and the signal output interface 4 are located at institute
State the two sides of shell 1.
In a particular application, bnc interface can be used in the sensor interface 2 and the signal output interface 4.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of acoustic emission signal adapting amplifier device characterized by comprising shell configures sensing on the housing
Device interface, the first switching selection switch and signal output interface, and configure the first amplifier, multiple bands in the shell
Bandpass filter and the second amplifier；
The sensor interface is electrically connected with first amplifier in；
The input terminal electricity that the output end of first amplifier passes through the first switching switch and the multiple bandpass filter
Connection；
The output end of the multiple bandpass filter is electrically connected with the input terminal of second amplifier；
The output end of second amplifier is electrically connected with the signal output interface.
2. acoustic emission signal adapting amplifier device according to claim 1, which is characterized in that
Second amplifier includes the first input pin, the second input pin and multiple gain pins；
The acoustic emission signal adapting amplifier device further includes the second switching switch, and the second switching switchgear distribution is in the shell
On body；
The output end of the multiple bandpass filter is electrically connected with first input pin of second amplifier；
The institute that second input pin of second amplifier passes through the second switching switch and second amplifier
State multiple gain pin electrical connections.
3. acoustic emission signal adapting amplifier device according to claim 1 or 2, which is characterized in that the acoustic emission signal
Adapting amplifier device further includes third amplifier, and the third amplifier configures in the shell, the third amplifier
Input terminal is electrically connected with the signal output interface, and the output end of the third amplifier is electrically connected with the sensor interface.
4. acoustic emission signal adapting amplifier device according to claim 3, which is characterized in that the third amplifier is function
Rate amplifier.
5. acoustic emission signal adapting amplifier device according to claim 1, which is characterized in that the multiple bandpass filter
There are four, respectively the first bandpass filter, the second bandpass filter, third bandpass filter and the 4th bandpass filter.
6. acoustic emission signal adapting amplifier device according to claim 5, which is characterized in that first bandpass filter
Filter range be 20KHz-1200KHz, the filter range of second bandpass filter is 100KHz-400KHz, described the
The filter range of three bandpass filters is 20KHz-120KHz, and the filter range of the 4th bandpass filter is 1KHz-
40KHz。
7. acoustic emission signal adapting amplifier device according to claim 2, which is characterized in that the institute of second amplifier
It states there are three multiple gain pins, respectively the first gain pin, the second gain pin and third gain pin.
8. acoustic emission signal adapting amplifier device according to claim 7, which is characterized in that the first gain pin is
20dB gain pin, the second gain pin are 40dB gain pin, and the third gain pin is 60dB gain pin.
9. acoustic emission signal adapting amplifier device according to claim 1, which is characterized in that the shell is by aluminium alloy system
At.
10. acoustic emission signal adapting amplifier device according to claim 1, which is characterized in that the sensor interface and
The signal output interface is located at the two sides of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820853557.3U CN208190609U (en) | 2018-06-04 | 2018-06-04 | A kind of acoustic emission signal adapting amplifier device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820853557.3U CN208190609U (en) | 2018-06-04 | 2018-06-04 | A kind of acoustic emission signal adapting amplifier device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208190609U true CN208190609U (en) | 2018-12-04 |
Family
ID=64427989
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820853557.3U Active CN208190609U (en) | 2018-06-04 | 2018-06-04 | A kind of acoustic emission signal adapting amplifier device |
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| Country | Link |
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| CN (1) | CN208190609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975433A (en) * | 2019-04-11 | 2019-07-05 | 苏芯物联技术(南京)有限公司 | A kind of dynamic and configurable band pass filter means and method for acoustic emission signal |
| CN116626171A (en) * | 2023-07-24 | 2023-08-22 | 之江实验室 | Acoustic emission signal detection system, acoustic emission signal detection method and fault diagnosis equipment |
-
2018
- 2018-06-04 CN CN201820853557.3U patent/CN208190609U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975433A (en) * | 2019-04-11 | 2019-07-05 | 苏芯物联技术(南京)有限公司 | A kind of dynamic and configurable band pass filter means and method for acoustic emission signal |
| CN116626171A (en) * | 2023-07-24 | 2023-08-22 | 之江实验室 | Acoustic emission signal detection system, acoustic emission signal detection method and fault diagnosis equipment |
| CN116626171B (en) * | 2023-07-24 | 2023-12-19 | 之江实验室 | Acoustic emission signal detection system, acoustic emission signal detection method and fault diagnosis equipment |
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