CN106225911A - A kind of pick up for machine sound diagnosis - Google Patents
A kind of pick up for machine sound diagnosis Download PDFInfo
- Publication number
- CN106225911A CN106225911A CN201610746031.0A CN201610746031A CN106225911A CN 106225911 A CN106225911 A CN 106225911A CN 201610746031 A CN201610746031 A CN 201610746031A CN 106225911 A CN106225911 A CN 106225911A
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- Prior art keywords
- pick
- signal
- circuit board
- signal processing
- module
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 36
- 230000008054 signal transmission Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of pick up for machine sound diagnosis, including pick up body, described pick up body includes shell, enclosure is provided with the piezo-electric measurement element for producing electric measurement signal, and for described electric measurement signal carries out processing and carrying out to the analytical equipment being arranged at described housing exterior the circuit board of signal transmission, described circuit board is provided with described enclosure and is additionally provided with for for the auxiliary electric energy device of electric energy needed for described circuit board offer work, this auxiliary electric energy device includes for interconnective acoustical signal receiver module and power supply signal processing module, described power supply signal processing module is connected with described circuit board.The pick up that the present invention provides, it can obtain the electric energy needed for the work of the circuit board carrying out signal processing from around, make it provide electric energy also can normally work without external device (ED), so that pick up is easier for installation, and effectively expand the application scenario of pick up.
Description
Technical field
The present invention relates to pick up technical field, particularly relate to a kind of pick up for machine sound diagnosis.
Background technology
In the field that many security relationship of process technology and energy technologies are great, the failure-free operation of equipment is depended on
In the machine used or machine part steady operation.For avoiding outage costly, irregular, such as valve or bearing
Damage should as far as possible in the starting stage it has been found that, say, that parts destroy before equipment just can be made out of service.Example
As defective valve seat causes leakage current, they produce a kind of wide band ultrasound emission.Therefore, available pick up is to machine
With detection, parts carry out diagnosing analyzes whether machine exists the hidden danger of operation troubles.At present, existing pick up needs to provide phase
The electrical energy devices answered is operated for pick up, and the work energy such as the circuit board in pick up is passed through transmission by analytical equipment
Cable provides.And the electric energy needed for pick up work is when being provided by external device (ED), to pick up installation on machine and should
With bringing many restrictions and inconvenience.
Summary of the invention
For overcoming the problem of the deficiencies in the prior art and existence, the present invention provides a kind of pickup for machine sound diagnosis
Device, the electric energy needed for the work of this pick up is without providing by external device (ED), but can directly be obtained corresponding by pick up
Acoustical signal produces the electric energy needed for its work.
The present invention is achieved by the following technical solutions: a kind of pick up for machine sound diagnosis, including pickup
Device body, described pick up body includes shell, and enclosure is provided with the piezo-electric measurement unit for producing electric measurement signal
Part, and for carrying out processing and carrying out signal biography to the analytical equipment being arranged at described housing exterior by described electric measurement signal
Defeated circuit board, described circuit board is provided with described enclosure and is additionally provided with for for electric needed for described circuit board offer work
The auxiliary electric energy device of energy, this auxiliary electric energy device includes processing with power supply signal for interconnective acoustical signal receiver module
Module, described power supply signal processing module is connected with described circuit board.
Further, described power supply signal processing module is connected with described circuit board by a signal rectification and Leveling Block
Connect.
Further, described circuit board includes a frequency divider, and the signal processing module being connected with this frequency divider, described
Frequency divider includes an analytical signal processing reason module and described power supply signal processing module；The input of described frequency divider and described sound
Signal receiving module connect, described power supply signal processing module as frequency divider a wherein outfan and pass through described signal whole
Stream and Leveling Block are connected with the signal processing module of described circuit board, and described analytical signal processing manages another as frequency divider of module
One outfan is connected with described signal processing module.
Preferably, described acoustical signal receiver module is piezoelectric ceramics module；Or described acoustical signal receiver module is described
Piezo-electric measurement element.
It is preferred that described circuit board is connected with described analytical equipment by cable, to carry out signal transmission；Or institute
State circuit board to be connected with described analytical equipment by radio or infrared ray, to carry out signal transmission.
The pick up that the present invention provides, it can obtain needed for the work of the circuit board carrying out signal processing from around
Electric energy so that it provides electric energy also can normally work without external device (ED), so that pick up is easier for installation, and
Effectively expand the application scenario of pick up.
Accompanying drawing explanation
Fig. 1 is the structural representation of pick up described in the embodiment of the present invention；
Fig. 2 is the electrical block diagram of the auxiliary electric energy device described in the embodiment of the present invention in pick up.
Wherein, drawing reference numeral is: 1-central axis, 2-shell, 3-acting surface, 4-stud, 5-seal face, 6-insulating trip,
8-first set letter section, 9-the second sleeve sections, 10-disc spring, 11-connecting line, 13-signal electrode, 14-ground electrode, 16-presents
Electric wire, 17-BNC lining, 18-annular flange flange, 19-sealing device, 20-connector, 21-backstop, 22-insulation film, 30-presses
Electrical measurement element, 31-electric measurement signal, 32-frequency divider, 33-the first wave filter, 34-the second wave filter, 35-circuit board, 36-
Analyze signal, 37-power supply signal, 40-output signal, 41-amplifier, 42-signal rectification and Leveling Block.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments, the present invention is made further
Describe in detail.
A kind of pick up for machine sound diagnosis, including pick up body, described pick up body includes shell,
Enclosure is provided with the piezo-electric measurement element for producing electric measurement signal, and for by described electric measurement signal
Reason also carries out the circuit board of signal transmission to the analytical equipment being arranged at described housing exterior, described circuit board be provided with described outside
It is additionally provided with inside shell for for the auxiliary electric energy device of electric energy, this auxiliary electric energy device bag needed for described circuit board offer work
Including for interconnective acoustical signal receiver module and power supply signal processing module, described power supply signal processing module is with described
Circuit board connects；Preferably, described power supply signal processing module is connected with described circuit board by a signal rectification and Leveling Block
Connect.In the present embodiment, auxiliary electric energy device obtains acoustical signal by acoustical signal receiver module, and power supply signal processing module is then by sound
The acoustical signal that signal receiving module obtains processes, and converts thereof into the electric energy needed for the work of described circuit board, so that
Obtaining pick up provides electric energy also can normally work without external device (ED).
In the present embodiment, described circuit board can be connected with described analytical equipment by cable, to carry out signal transmission；
Or described circuit board is connected with described analytical equipment also by radio or infrared ray, to carry out signal transmission.
The pick up that the embodiment of the present invention provides, it can be from around obtaining the work being used for carrying out the circuit board of signal processing
Required electric energy so that it provides electric energy also can normally work, so that the installation of pick up is more square without external device (ED)
Just, and effectively expand the application scenario of pick up.
Wherein, described acoustical signal receiver module can be piezoelectric ceramics module, it is also possible to directly utilize described piezo-electric measurement
Element is as acoustical signal receiver module.In the present embodiment, preferably directly utilize described piezo-electric measurement element and receive as acoustical signal
Module, directly utilizes described piezo-electric measurement element that pick up itself has as the device for producing auxiliary electric energy, both may be used
Simplify structure, cost can be reduced again.
As preferred embodiment, described circuit board includes a frequency divider, and the signal processing being connected with this frequency divider
Module, described frequency divider includes an analytical signal processing reason module and described power supply signal processing module；The input of described frequency divider
End is connected with described acoustical signal receiver module, and described power supply signal processing module is as the wherein outfan of frequency divider and passes through
Described signal rectification and Leveling Block are connected with the signal processing module of described circuit board, the reason module conduct of described analytical signal processing
Another outfan of frequency divider is connected with described signal processing module.
Owing to the present embodiment directly utilizing described piezo-electric measurement element that pick up itself has as auxiliary for producing
Helping the device of electric energy, therefore arrange described frequency divider, this frequency divider is for dividing the electric measurement signal that piezo-electric measurement element produces
Become two signals: frequency analyzes signal and frequency power supply signal in the range of second frequency in the range of first frequency；
Analyzing signal is different from the frequency range of power supply signal, analyzes signal and transmits after described analytical signal processing reason resume module
Transmit again to signal processing module to described analytical equipment, to judge whether associated machine component exists potential faults；And power
Signal then transmits after described power supply signal processing module processes to number rectification and Leveling Block and carries out rectification and smooth place
Reason, finally transmits to signal processing module and processes, to be powered to described circuit board.Wherein, signal and power supply are analyzed
The frequency range of signal is different, and the frequency of two signals does not exist the situation of coincidence.In the present embodiment, the frequency of power supply signal
Rate scope is 0-50KHz, and the frequency range analyzing signal is 50-200KHz；I.e. first frequency scope is 0-50KHz, second
Frequency range is 50-200KHz.
Pickup in the present embodiment can be applicable to machinery diagnosis, is particularly suited for diagnosing valve and sews or damage of the bearing.Industry
Just be enough to draw diagnosis it has proven convenient that assess certain frequency range.When diagnosing valve and sewing, be basic main containing valve work
Make the lower frequency scope of noise and mainly contain between the upper frequency range of defect noise in addition in certain duty
Difference.Critical frequency between the two frequency range can select between 50KHz and 200KHz, because work noise master
Will be in the interior generation less than 120KHz.Therefore, in order to identify defect, to one at the measurement signal frequency that frequency is more than 50KHz
Rate scope is estimated, but this frequency range is not necessarily directly from the beginning of 50KHz.Therefore, by the letter in this frequency range
Number (i.e. analyzing signal) is processed (such as processing and amplifying etc.) accordingly and is connected by wire or radio to analytical equipment
It is analyzed.Owing to the signal in the signal that provided by the piezo-electric measurement element frequency range between 0-50KHz is the highest
Can, because component of signal now has the biggest amplitude, therefore using the signal (i.e. power supply signal) in this frequency range as supplying
The signal of telecommunication also is carried out processing the electric energy needed for working as described circuit board.It is in the component of signal in the range of this can pass through
Favourable mode is used for being produced as the energy required for processing the work of circuit.This frequency divider is utilized to have an advantage that: will be from
The power supply signal that same electric measurement signal is derived, together with analyze signal and send to analytical equipment after corresponding process
Row is analyzed, and is effectively reduced the distortion analyzing signal.
With specific embodiment, the present invention is further described below:
As shown in Figure 1, pick up body has a tank shape shell 2, is provided with the acting surface 3 of spanner outside it, and pick up is originally
The fixing device of body uses stud 4, and it can screw in the corresponding screwed hole of installed position, thus fixes and pick up
Sound device；The tightening torque needed can be applied, to ensure the vibration of installed position, by the seal face of outer casing bottom with spanner
5 Rhizoma Nelumbinis conjunctions well.There is one to make of the identical material of material that manufactures with piezo-electric measurement element 30 in the inner side of outer casing bottom
Insulating trip 6, this insulating trip 6 faces first set letter section and has the side soldering of the coat of metal at piezo-electric measurement element 30
On.First set letter section 8 and the second sleeve sections 9 and disc spring 10 collectively form a sleeve, and it forms electromagnetic screen
Important component part.Additionally, the company that the signal electrode 13 of piezo-electric measurement element 30 or ground electrode 14 electrically connect with circuit board 35
Wiring 11, circuit board 35 itself and feed line 16 are shielded the anti-electromagnetism of sleeve inner is dry with scratching.Circuit board 35 will be for pressing
The charge displacement caused by sonic vibration in electrical measurement element 30 is transformed to a signal, and signal can be entered by cable or radio
Row long-distance transmissions is analyzed to the analytical equipment (being not drawn into this analytical equipment in figure) outside pick up.The bottom surface of sleeve leads to
The coat of metal encapsulation crossing insulating trip 6 conduction is closed, and the coat of metal is used simultaneously as ground electrode 14.Region in another bottom surface
In, the inwall of sleeve has female thread, a BNC(Bayonet Nut Connector) lining 17 screws in wherein, until making BNC lining
One annular flange flange 18 of 17 abuts on sealing device 19.It is of course also possible to use other schemes, as used another kind of connector
Adapter replaces BNC lining in cable is connected directly between sleeve.Connector 20 for the location of sleeve, connector 20 around
Another bottom surface of sleeve and be shaped with female thread, it is spun on the corresponding external screw thread of shell 2 until backstop 21, insulate thin
Film 22 is between sleeve side and shell 2 inwall.
In FIG, 1 represents central axis, and the top of central axis 1 is divided into the vertical section of pick up；Central axis 1 time
Part is the side view of pick up.Certainly, pick up body can be configured according to the needs of its reality, and it can use such as Fig. 1
In structure, it is possible to use other structures of the prior art, below described auxiliary electric energy device be further described.
As in figure 2 it is shown, the pick up in the present embodiment, directly utilize described piezo-electric measurement element 30 and receive as acoustical signal
Module, this piezo-electric measurement element 30 is connected with the input of frequency divider 32, frequency divider 32 include analytical signal processing reason module with
Described power supply signal processing module, wherein analytical signal processing reason module is mainly made up of the first wave filter 33, and power supply signal processes
Module is mainly made up of the second wave filter 34；Second wave filter 34 is by signal rectification and Leveling Block 42 and the letter of circuit board 35
Number processing module (being mainly made up of amplifier 41) connects, and the first wave filter 33 is then directly connected with amplifier.In the present embodiment,
Pick up receives acoustical signal by piezo-electric measurement element 30, piezo-electric measurement element 30 in a big frequency range by solid-borne noise
Be converted to electric measurement signal 31.This measures signal 31 and imports frequency divider 32.First wave filter 33 is in for electric measurement signal 31
Component of signal on critical frequency 50KHz is through, say, that analyzes signal 36 and only contains only the component that frequency is higher,
They analyzed assessments in the embodiment sew diagnosis.When output signal 40 is connected to be delivered to analytical equipment by cable
In the case of (being not drawn into this analytical equipment), amplifier 41 for being processed as the form of a kind of applicable transmission by analysis signal 36.
Certainly, output signal 40 is also by the form transmission being wirelessly transferred to analytical equipment, when employing is wirelessly transferred, and can be at electricity
Set high frequency (HF) manipulator and antenna in road plate 35, be used for producing corresponding radio signal as output signal.Second filtering
It is through that device 34 is in the component under critical frequency 50KHz for electric measurement signal 31, and these components shake despite big
Width, but examine this conclusion for derivation and still have secondary analysis significance.By arranging between the second wave filter 34 and amplifier 41
Signal rectification and Leveling Block 42, for power supply signal 37 carries out rectification and smoothing processing, therefore provide for amplifier 41
Power supply signal passes through rectification and smoothing processing, it is thus possible to ensure the amount of height of output signal 40.Utilize above-mentioned auxiliary
Electrical energy devices, can make pick up can from the electric energy needed for the work of the circuit board around obtained for carrying out signal processing,
So that it provides electric energy also can normally work without external device (ED), and then make the easier for installation of pick up, and can
Effectively expand the application scenario of pick up.
Above-described embodiment is the preferably implementation of the present invention, is not limited to the present invention, without departing from this
On the premise of bright inventive concept, any obvious replacement is all within protection scope of the present invention.
Claims (5)
1., for a pick up for machine sound diagnosis, including pick up body, described pick up body includes shell,
Enclosure is provided with the piezo-electric measurement element for producing electric measurement signal, and for by described electric measurement signal
Manage and carry out to the analytical equipment being arranged at described housing exterior the circuit board of signal transmission, it is characterised in that: described circuit board
Being provided with described enclosure to be additionally provided with for for the auxiliary electric energy device of electric energy needed for described circuit board offer work, this is auxiliary
Electrical energy devices is helped to include for interconnective acoustical signal receiver module and power supply signal processing module, at described power supply signal
Reason module is connected with described circuit board.
Pick up the most according to claim 1, it is characterised in that: described power supply signal processing module passes through a signal rectification
And Leveling Block is connected with described circuit board.
Pick up the most according to claim 2, it is characterised in that: described circuit board includes a frequency divider, and with this point
Frequently the signal processing module that device connects, described frequency divider includes that an analytical signal processing reason module processes mould with described power supply signal
Block；
The input of described frequency divider is connected with described acoustical signal receiver module, and described power supply signal processing module is as frequency divider
A wherein outfan and be connected with the signal processing module of described circuit board by described signal rectification and Leveling Block, described
Analytical signal processing reason module is connected with described signal processing module as another outfan of frequency divider.
4. according to the pick up described in any one in claims 1 to 3, it is characterised in that: described acoustical signal receiver module is
Piezoelectric ceramics module, or described acoustical signal receiver module is described piezo-electric measurement element.
Pick up the most according to claim 4, it is characterised in that: described circuit board is by cable with described analytical equipment even
Connect, to carry out signal transmission；Or described circuit board is connected with described analytical equipment by radio or infrared ray, to enter
Row carries out signal transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746031.0A CN106225911A (en) | 2016-08-29 | 2016-08-29 | A kind of pick up for machine sound diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746031.0A CN106225911A (en) | 2016-08-29 | 2016-08-29 | A kind of pick up for machine sound diagnosis |
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| Publication Number | Publication Date |
|---|---|
| CN106225911A true CN106225911A (en) | 2016-12-14 |
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ID=57554843
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610746031.0A Pending CN106225911A (en) | 2016-08-29 | 2016-08-29 | A kind of pick up for machine sound diagnosis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639853A (en) * | 2021-08-30 | 2021-11-12 | 广东亿讯电子有限公司 | Fault detection device and fault detection circuit of stamping die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706036A2 (en) * | 1994-10-04 | 1996-04-10 | Ngk Insulators, Ltd. | Apparatus and method for transmitting and receiving ultrasonic waves having an acoustoelectric, ultrasonic transducer |
| EP0987554A1 (en) * | 1998-09-15 | 2000-03-22 | Vibro-Meter Sa | Measuring circuit |
| CN1798965A (en) * | 2003-06-06 | 2006-07-05 | 西门子公司 | Acoustic pick-up |
| CN202153154U (en) * | 2011-06-29 | 2012-02-29 | 西安理工大学 | Remote sound monitoring system |
| CN203310511U (en) * | 2013-05-10 | 2013-11-27 | 山东康威通信技术股份有限公司 | System measuring multi-point acceleration positioning disturbance source |
-
2016
- 2016-08-29 CN CN201610746031.0A patent/CN106225911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706036A2 (en) * | 1994-10-04 | 1996-04-10 | Ngk Insulators, Ltd. | Apparatus and method for transmitting and receiving ultrasonic waves having an acoustoelectric, ultrasonic transducer |
| EP0987554A1 (en) * | 1998-09-15 | 2000-03-22 | Vibro-Meter Sa | Measuring circuit |
| CN1798965A (en) * | 2003-06-06 | 2006-07-05 | 西门子公司 | Acoustic pick-up |
| CN202153154U (en) * | 2011-06-29 | 2012-02-29 | 西安理工大学 | Remote sound monitoring system |
| CN203310511U (en) * | 2013-05-10 | 2013-11-27 | 山东康威通信技术股份有限公司 | System measuring multi-point acceleration positioning disturbance source |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639853A (en) * | 2021-08-30 | 2021-11-12 | 广东亿讯电子有限公司 | Fault detection device and fault detection circuit of stamping die |
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Application publication date: 20161214 |
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