CN107991048A - Vibration generating arrangement, cross displacement protection structures and methods - Google Patents
Vibration generating arrangement, cross displacement protection structures and methods Download PDFInfo
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- CN107991048A CN107991048A CN201711309638.3A CN201711309638A CN107991048A CN 107991048 A CN107991048 A CN 107991048A CN 201711309638 A CN201711309638 A CN 201711309638A CN 107991048 A CN107991048 A CN 107991048A
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- vibration generating
- generating arrangement
- coil
- photoelectric sensor
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 7
- 241001270131 Agaricus moelleri Species 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 45
- 230000004069 differentiation Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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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 vibration generating arrangement, cross displacement protection structures and methods.The vibration generating arrangement includes stage body and moving-coil, the relatively described stage body of the moving-coil can be moved up in vibration generating arrangement axis, matched grey level histogram and photoelectric sensor are provided with the stage body and moving-coil, the photoelectric sensor is oppositely arranged with grey level histogram, and the grey level histogram has been axially formed a variety of gray scales towards the working face of the photoelectric sensor along vibration generating arrangement.The change of color is converted into electric signal, is limited by upper and lower displacement of the differentiation above and below color to moving-coil, its control structure is contactless, and safety coefficient is high, is hardly damaged by the present invention by the cooperation of grey level histogram and photoelectric sensor.The invention also discloses include the vibration generating arrangement for crossing displacement protection structure.
Description
Technical field
The present invention relates to vibration test technology field, more particularly to a kind of vibration generating arrangement, crosses displacement protection structure
And method.
Background technology
With reference to shown in Fig. 1, Chinese Patent No. 200820199291.1 discloses a kind of vibration table moving coil displacement
Protection switch, is mainly made of two stage body metal contacts 4,5 on the moving-coil metal feeler lever 2 and stage body 3 on moving-coil 1, described
Moving-coil metal feeler lever 2 is fixedly arranged on 1 sidepiece of moving-coil with end towards stage body 3, and the two stage bodies metal contact 4,5 corresponds to metal
Feeler lever 2 is divided into moving-coil metal feeler lever 2 along the both sides on moving-coil direction of vibration；The moving-coil metal feeler lever 2 and two stage body metals
Contact 4,5 is respectively cooperating with, and the two stage bodies metal contact 4,5 is electrically connected to each other and picks out the terminals as switch, described
Moving-coil metal feeler lever 2 picks out another terminals as switch.When the moving-coil of shake table, which exceedes rated displacement, to move, protection is opened
Close and connect, so as to timely alarm or shut down electric vibration table, avoid occurring the accident of moving-coil damaged in collision, saved electronic
The maintenance cost of shake table, while the use cost of electric vibration table is also reduced, reduce application risk.Such a electric vibrating
Platform moving-coil cross displacement protection there are the problem of include at least：
1st, metal feeler lever and metal contact surface easily aoxidize；
2nd, metal feeler lever follower ring high-magnitude vibrate, the time grown generation fatigue break from root it is strong, break strong part metals touch
In the easy inspiration magnetic gap of bar, larger damage can be produced to shake table, meanwhile, after fractureing, displacement shielding failure, easily endangers
Danger.
The content of the invention
Displacement protection structure is crossed it is an object of the invention to provide a kind of vibration generating arrangement, to overcome in the prior art
Deficiency.To achieve the above object, the present invention provides following technical solution：
Structure is protected in the displacement of crossing that the embodiment of the present invention discloses a kind of vibration generating arrangement, and the vibration generating arrangement includes
Stage body and moving-coil, the relatively described stage body of the moving-coil can be moved up in vibration generating arrangement axis, on the stage body and moving-coil
Matched grey level histogram and photoelectric sensor are provided with, the photoelectric sensor is oppositely arranged with grey level histogram, the grey level histogram court
A variety of gray scales have been axially formed to the working face of the photoelectric sensor along vibration generating arrangement.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, the working face of the grey level histogram includes
The first detection faces with the first gray value, the second detection faces with the second gray value and with the 3rd gray value
Three detection faces, second detection faces and the 3rd detection faces are located at the upper and lower ends of first detection faces, first gray scale
Value is different with the second gray value, and first gray value and the 3rd gray value are different.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, second gray value and the 3rd ash
Angle value is identical.For example, first detection faces are white, second detection faces and the 3rd detection faces are black；It is alternatively, described
First detection faces are black, and second detection faces and the 3rd detection faces are white.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, the grey level histogram is fixed on described dynamic
On circle, the photoelectric sensor is relatively fixed on the stage body.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, the stage body includes magnetic cylinder and center
Magnetic pole, is arranged in the magnetic gap between the magnetic cylinder and central magnetic pole formed with magnetic gap, the grey level histogram and photoelectric sensor.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, the magnetic cylinder is towards the magnetic gap
Face is recessed to form a mounting groove, and the photoelectric sensor is equipped with the mounting groove.
Preferably, the photoelectric sensor and vibration generating arrangement power amplifier connection, the power amplifier with
The controller connection of vibration generating arrangement.
Preferably, crossing in displacement protection structure in above-mentioned vibration generating arrangement, the vibration generating arrangement is electronic
Shake table, electromagnetic vibration generator system, electric activator or electromagnetic exciter.
The invention also discloses a kind of vibration generating arrangement, including stage body and moving-coil, also set between the stage body and moving-coil
Be equipped with the vibration generating arrangement crosses displacement protection structure.
The invention also discloses cross displacement guard method, bag based on the foregoing vibration generating arrangement for crossing displacement protection structure
Include：
Move grey level histogram follower ring；
With the color change information on photoelectric sensor collection grey level histogram；
Color change information is converted into displacement information；
The control unit of vibration generating arrangement judges whether moving-coil crosses displacement according to institute's displacement information.
Compared with prior art, the advantage of the invention is that：This is crossed displacement protection structure and passes through grey level histogram and photoelectric sensing
The cooperation of device, electric signal is converted into by the change of color, is limited by upper and lower displacement of the differentiation above and below color to moving-coil,
Its control structure is contactless, and safety coefficient is high, is hardly damaged.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in invention, for those of ordinary skill in the art, without creative efforts,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 show the structure diagram of electrical vibration table moving coil displacement protection switch in the prior art；
Fig. 2 show the schematic diagram that displacement protection structure is crossed in the specific embodiment of the invention；
Fig. 3 show the schematic diagram of grey level histogram in one embodiment of the invention；
Fig. 4 show the schematic diagram of grey level histogram in another embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Displacement protection structure is crossed with reference to Fig. 2 and Fig. 3 show a kind of vibration generating arrangement in one embodiment of the invention,
The vibration generating arrangement includes stage body 101 and moving-coil 102, and moving-coil 102 is installed on stage body 101, and moving-coil 102 is with respect to stage body
101 move (as shown in four-headed arrow in Fig. 2) in vertical direction, and matched gray scale is provided with stage body 101 and moving-coil 102
Card 103 and photoelectric sensor 104, photoelectric sensor 104 are oppositely arranged with grey level histogram 103, and grey level histogram 103 is towards photoelectric sensor
104 working face is vertically formed with a variety of gray scales.
Photoelectric sensor 104 is analog sensor, has a light emitting diode and a photo resistance, installed in the same face
On.Photoelectric sensor 104 is different to the degree of reflection of light using the detection faces of different colours, and different detection faces are returned in photo resistance
Also different principle carries out shade detection to light its resistance value returned.In effective detecting distance, light emitting diode sends white
Light, is radiated in the detection faces of grey level histogram 103, detection faces reflecting part light, and photo resistance detects the intensity of this light and will
It is converted to voltage signal.
The working face of grey level histogram 103 includes the first detection faces 1031 with the first gray value, with the second gray value
Second detection faces 1032 and the 3rd detection faces 1033 with the 3rd gray value, the second detection faces 1032 and the 3rd detection faces
1033 are located at the upper and lower ends of the first detection faces 1031, and the first gray value and the second gray value are different, the first gray value and the 3rd
Gray value is different.For example, first detection faces are white, second detection faces and the 3rd detection faces are black；Alternatively, institute
It is black to state the first detection faces, and second detection faces and the 3rd detection faces are white.
In the present invention, the height between the second detection faces and the 3rd detection faces, constitutes the maximum of 102 upper and lower displacement of moving-coil
Value, during work, 104 versus grayscale card 103 of photoelectric sensor is moved in vertical direction, when photoelectric sensor 104 moves relatively upward
When moving and detecting the second gray value, process circuit is sent a signal in real time, and process circuit handles simultaneously half-tone information
Send to vibrate occurrence of equipment control system system (including power amplifier and controller), control system system by varying
Current direction is to control moving-coil 102 to move backward, and when photoelectric sensor 104 moves relatively downward and detects the 3rd gray value
When, process circuit is sent a signal in real time, and process circuit handles half-tone information and sends to control system, control system
System, to control moving-coil 102 to move backward, so repeatedly, ensures that photoelectric sensor 104 is always positioned at the by varying current direction
Between two detection faces and the 3rd detection faces, that is, the maximum displacement moved up and down to moving-coil 102 is controlled.Preferable real
Apply in example, the second gray value and the 3rd gray value are identical.
In one embodiment, the second gray value and the 3rd gray value can not also be same.
With reference to shown in Fig. 4, in another embodiment, colour band on grey level histogram 103 can also vertically gradually property changes,
As long as it can substantially distinguish the upper limit of displacement or the color of lower position and other positions difference.
In a preferred embodiment, grey level histogram 103 is fixed on moving-coil 102, and photoelectric sensor 104 is relatively fixed to stage body
On 101.
Further, stage body 101 includes magnetic cylinder, which has magnetic gap 105, and moving-coil 102 is moved up and down in magnetic gap, gray scale
Card 103 and photoelectric sensor 104 are arranged in magnetic gap 105.
In the technical solution, grey level histogram 103 and photoelectric sensor 104 are protected in magnetic gap, and on the one hand measurement is more accurate, separately
On the one hand, it is not susceptible to damage.
In another embodiment, the top or bottom of stage body 101 and moving-coil 102, can protrude out a fixed link, grey level histogram respectively
103 and photoelectric sensor 104 be arranged at outside magnetic gap and in fixed link.
Further, the face of magnetic cylinder towards magnetic gap is recessed forms a mounting groove, and photoelectric sensor 104 is equipped with installation
In groove.In the technical solution, photoelectric sensor 104 is housed in mounting groove, can convexedly stretch in magnetic gap to avoid photoelectric sensor 104
Interior, safety coefficient is high, and installation is also convenient for.
In another embodiment, grey level histogram 103 can also be installed on stage body 101, correspondingly, photoelectric sensor 104 is pacified
On moving-coil 102.But since photoelectric sensor 104 and outside need transmit signal by circuit, it is being preferable to carry out
In example, photoelectric sensor 104 is arranged on stage body 101.
In one embodiment, vibration generating arrangement is electric vibration table, electromagnetic vibration generator system, electric activator or electromagnetic exciting
Device.In conclusion the present invention's crosses displacement protection cooperation of the structure by grey level histogram and photoelectric sensor, the change of color is turned
Electric signal is turned to, is limited by upper and lower displacement of the differentiation above and below color to moving-coil, its control structure is contactless, peace
Overall coefficient is high, is hardly damaged.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of vibration generating arrangement crosses displacement protection structure, the vibration generating arrangement includes stage body and moving-coil, described dynamic
The relatively described stage body of circle can be moved up in vibration generating arrangement axis, it is characterised in that be provided with the stage body and moving-coil
Matched grey level histogram and photoelectric sensor, the photoelectric sensor are oppositely arranged with grey level histogram, and the grey level histogram is described in
The working face of photoelectric sensor has been axially formed a variety of gray scales along vibration generating arrangement.
2. vibration generating arrangement according to claim 1 crosses displacement protection structure, it is characterised in that the grey level histogram
Working face includes the first detection faces with the first gray value, the second detection faces with the second gray value and with the 3
3rd detection faces of gray value, second detection faces and the 3rd detection faces are located at the both ends of first detection faces, and described
One gray value and the second gray value are different, and first gray value and the 3rd gray value are different.
3. vibration generating arrangement according to claim 2 crosses displacement protection structure, it is characterised in that second gray scale
Value is identical with the 3rd gray value.
4. vibration generating arrangement according to claim 3 crosses displacement protection structure, it is characterised in that first detection
Face is white, and second detection faces and the 3rd detection faces are black；Alternatively, first detection faces are black, described second
Detection faces and the 3rd detection faces are white.
5. vibration generating arrangement according to claim 1 crosses displacement protection structure, it is characterised in that the gray scale fixes
Due on the moving-coil, the photoelectric sensor is relatively fixed on the stage body.
6. vibration generating arrangement according to claim 5 crosses displacement protection structure, it is characterised in that the stage body includes
Magnetic cylinder and central magnetic pole, are arranged between the magnetic cylinder and central magnetic pole formed with magnetic gap, the grey level histogram and photoelectric sensor
In the magnetic gap.
7. vibration generating arrangement according to claim 6 cross displacement protection structure, it is characterised in that the magnetic cylinder towards
The face of the magnetic gap is recessed to form a mounting groove, and the photoelectric sensor is equipped with the mounting groove.
8. vibration generating arrangement according to claim 1 crosses displacement protection structure, it is characterised in that the photoelectric sensing
The power amplifier of device and vibration generating arrangement connects, the controller connection of the power amplifier and vibration generating arrangement.
9. vibration generating arrangement, including stage body and moving-coil, it is characterised in that right is additionally provided between the stage body and moving-coil will
That seeks the vibration generating arrangement any one of 1-8 crosses displacement protection structure.
10. displacement protection side is crossed based on the vibration generating arrangement that displacement protection structure is crossed any one of claim 1-8
Method, it is characterised in that including：
Move grey level histogram follower ring；
With the color change information on photoelectric sensor collection grey level histogram；
Color change information is converted into displacement information；
The control unit of vibration generating arrangement judges whether moving-coil crosses displacement according to institute's displacement information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711309638.3A CN107991048A (en) | 2017-12-11 | 2017-12-11 | Vibration generating arrangement, cross displacement protection structures and methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711309638.3A CN107991048A (en) | 2017-12-11 | 2017-12-11 | Vibration generating arrangement, cross displacement protection structures and methods |
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| Publication Number | Publication Date |
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| CN107991048A true CN107991048A (en) | 2018-05-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211506A (en) * | 2018-10-30 | 2019-01-15 | 脉创测控装备科技（苏州）有限公司 | Testing equipment, center-zero offset control device and control method |
| CN110243563A (en) * | 2019-07-04 | 2019-09-17 | 中国航空综合技术研究所 | Three axial six-freedom degree vibration test apparatus |
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| US20110005324A1 (en) * | 2009-07-13 | 2011-01-13 | Delatorre Leroy C | Torque output differential pressure sensor |
| CN207585868U (en) * | 2017-12-11 | 2018-07-06 | 脉创测控装备科技（苏州）有限公司 | Vibration rig and its moving-coil protection mechanism |
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2017
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| CN1743824A (en) * | 2005-09-21 | 2006-03-08 | 苏州东菱振动试验仪器有限公司 | Moving coil dynamic balance control technique |
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Application publication date: 20180504 |
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