CN107192339A - Displacement monitor - Google Patents
Displacement monitor Download PDFInfo
- Publication number
- CN107192339A CN107192339A CN201710527649.2A CN201710527649A CN107192339A CN 107192339 A CN107192339 A CN 107192339A CN 201710527649 A CN201710527649 A CN 201710527649A CN 107192339 A CN107192339 A CN 107192339A
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- China
- Prior art keywords
- pull bar
- measurement
- inner chamber
- fiber
- displacement monitor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a kind of displacement monitor, including：Housing, with inner chamber；Pull bar is measured, one end of measurement pull bar is worn in the lumen, and the other end of measurement pull bar stretches out in inner chamber；The fiber grating packaging arrangement being connected with (FBG) demodulator, fiber grating packaging arrangement is set in the lumen, fiber grating packaging arrangement is made up of multiple fiber-optic grating sensors, and cavity wall of each fiber-optic grating sensor respectively with measurement pull bar and inner chamber is connected, when measurement pull bar is overhang to inner chamber, part fiber grating sensor is stretched, and when measurement pull bar is stretched into inner chamber, another part fiber-optic grating sensor is stretched.Technical scheme efficiently solves the problem of displacement monitor of the prior art can not carry out bidirectional displacement monitoring.
Description
Technical field
The present invention relates to engineering construction field, in particular to a kind of displacement monitor.
Background technology
In engineering construction field, in order to ensure construction safety, it is necessary to carry out stability prison to related structure and region
Survey, and displacement monitoring is often main Contents for Monitoring.Wherein, the kind of sensor of monitoring displacement is more, generally uses position
Shifting signal switchs to electric signal, but such a sensor has the phenomenon for needing power supply supply and being vulnerable to electromagnetic interference.
In the prior art, displacement monitoring is generally carried out using fiber-optic grating sensor, and such a displacement monitor can only
The displacement of single direction is monitored, causes monitoring device larger to the displacement monitoring error of part to be monitored.
The content of the invention
It is a primary object of the present invention to provide a kind of displacement monitor, filled with solving displacement monitoring of the prior art
Put the problem of can not carrying out bidirectional displacement monitoring.
To achieve these goals, the invention provides a kind of displacement monitor, including：Housing, with inner chamber；Measurement
Pull bar, one end of measurement pull bar is worn in the lumen, and the other end of measurement pull bar stretches out in inner chamber；The light being connected with (FBG) demodulator
Fine grating assembly, fiber grating packaging arrangement is set in the lumen, and fiber grating packaging arrangement is made up of multiple fiber-optic grating sensors, and respectively
Cavity wall of the fiber-optic grating sensor respectively with measurement pull bar and inner chamber is connected, when measurement pull bar is overhang to inner chamber, part
Fiber-optic grating sensor is stretched, and when measurement pull bar is stretched into inner chamber, another part fiber-optic grating sensor is stretched.
Further, the two ends of part fiber grating sensor are connected with the lower cavity wall and measurement pull bar of inner chamber respectively, separately
The two ends of a part of fiber-optic grating sensor are connected with the upper cavity wall and measurement pull bar of institute inner chamber respectively.
Further, fiber-optic grating sensor includes the spring, metal capillary, fiber grating fixing end being sequentially connected
Son, and the close spring of fiber-optic grating sensor one end with measurement pull bar be connected, the close optical fiber light of fiber-optic grating sensor
One end of grid fixing terminal and the cavity wall of inner chamber are connected.
Further, displacement monitor also includes wiring construction, and pull bar and part to be monitored will be measured by wiring construction
Connection.
Further, length direction of the wiring construction along measurement pull bar is adjustably set, and displacement monitor also includes
Stringing structure, wiring construction is locked by stringing structure with measurement pull bar.
Further, measurement pull bar has otch, and otch is extended downwardly by the upper surface of measurement pull bar, and wiring construction includes
Connector, connector is slidably disposed in otch and can moved up and down relative to measurement pull bar.
Further, wiring construction also includes connection ring, and connection ring is slideably set in the lateral wall of measurement pull bar, and
The two ends of connector are connected with connection ring.
Further, stringing structure is that screw thread is provided with multiple nuts, the lateral wall for measuring pull bar, and nut is drawn with measurement
Connection ring is folded between nut to be locked by bar threaded connection.
Further, wiring construction also includes connecting line, and the first end of connecting line is connected with connector, and the second of connecting line
End is provided with connecting ring and is connected with part to be monitored.
Further, displacement monitor also includes setting return unit in the lumen, and return unit is connected to the chamber of inner chamber
Between wall and measurement pull bar, so that measurement pull bar has outwardly directed movement tendency all the time.
Further, measurement pull bar includes bar body and the block being arranged on below bar body, and the cavity wall of inner chamber is set
The stop part for backstop block is equipped with, along the length direction of measurement pull bar, stop part and return unit are located at the two of block respectively
Side.
Further, inner chamber has the demarcation chamber and measurement chamber that the stretching direction along measurement pull bar is sequentially communicated, optical fiber light
Gate sensor is arranged on measurement intracavitary, and return unit and block are arranged on demarcation intracavitary, and demarcation chamber passes through stop part with measurement chamber
Separate.
Further, displacement monitor also includes calibration element, and housing, which has, is communicated to the first of demarcation chamber by its outer wall
Hole is demarcated, block has the second demarcation hole, and the bearing of trend in the first demarcation hole and the second demarcation hole is each perpendicular to measure pull bar
Length direction, when first demarcation hole with second demarcation hole it is coaxial when, calibration element sequentially pass through the first demarcation hole and second demarcate
Hole is demarcated to the initial position for measuring pull bar.
Apply the technical scheme of the present invention, in this application, each fiber-optic grating sensor of fiber grating packaging arrangement with survey
The cavity wall connection of pull bar and inner chamber is measured, it is protruding or during being stretched into inner chamber from inner chamber in measurement pull bar, have all the time
Corresponding fiber-optic grating sensor is stretched, then corresponding strain can be produced on the fiber-optic grating sensor, (FBG) demodulator is by answering
Variate demodulates the displacement of measurement pull bar, so as to realize the mesh for the displacement for monitoring measurement pull bar in real time by fiber-optic grating sensor
's.So, the displacement monitor in the application can realize the real-time displacement monitoring to measuring pull bar, and the displacement refers to measurement and drawn
Bar is protruding or displacement that stretched into inner chamber, i.e. displacement monitor in the application are realized to measurement pull bar from inner chamber
Way moving amount monitoring.Compared with unidirectional monitoring can only being realized by light grating assembly in the prior art, displacement is improved
The accuracy of monitoring and the degree of accuracy.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the sectional view of the embodiment of the displacement monitor according to the present invention；And
Fig. 2 shows the dimensional structure diagram of the wiring construction in Fig. 1.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, housing；11st, the first demarcation hole；20th, pull bar is measured；21st, bar body；22nd, block；31st, optical fiber grating sensing
Device；311st, spring；312nd, metal capillary；313rd, fiber grating fixing terminal；314th, temperature-compensating grating；41st, connector；
42nd, connection ring；43rd, connecting line；44th, connecting ring；51st, nut；60th, return unit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any limitation.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, technology, method and apparatus should be considered as authorizing specification
A part.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, rather than
It is used as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label and word
Mother represents similar terms in following accompanying drawing, therefore, once it is defined in a certain Xiang Yi accompanying drawing, then in subsequent accompanying drawing
It need not be further discussed.
Fig. 1 shows the sectional view of the embodiment of the displacement monitor according to the present invention.As shown in figure 1, the present embodiment
Displacement monitor include housing 10, measurement pull bar 20 and fiber grating packaging arrangement.Wherein, housing 10 has inner chamber.Measurement is drawn
One end of bar 20 is worn in the lumen, and the other end of measurement pull bar 20 stretches out in inner chamber.Fiber grating packaging arrangement connects with (FBG) demodulator
Connect, and fiber grating packaging arrangement is set in the lumen, fiber grating packaging arrangement is made up of multiple fiber-optic grating sensors 31, and each optical fiber
Cavity wall of the grating sensor 31 respectively with measurement pull bar 20 and inner chamber is connected, when measurement pull bar 20 is overhang to inner chamber, portion
Light splitting fiber grating sensor 31 is stretched, when measurement pull bar 20 is stretched into inner chamber, the quilt of another part fiber-optic grating sensor 31
Stretching.
Using the technical scheme of the present embodiment, in the present embodiment, each fiber-optic grating sensor 31 of fiber grating packaging arrangement
Be connected with measurement pull bar 20 and the cavity wall of inner chamber, measuring pull bar 20 from inner chamber is protruding or process that stretched into inner chamber
In, there is corresponding fiber-optic grating sensor 31 to be stretched all the time, then can produce corresponding strain on the fiber-optic grating sensor 31,
(FBG) demodulator demodulates the displacement of measurement pull bar 20 by strain value, so as to realize that monitoring is surveyed in real time by fiber-optic grating sensor 31
Measure the purpose of the displacement of pull bar 20.So, the displacement monitor in the present embodiment can be realized to the real-time of measurement pull bar 20
Displacement monitoring, the displacement refers to measurement pull bar 20 from inner chamber is protruding or displacement that stretched into inner chamber, i.e., in the present embodiment
Displacement monitor realizes the way moving amount monitoring to measuring pull bar 20.With light grating group can only be passed through in the prior art
Part realizes that unidirectional monitoring is compared, and improves accuracy and the degree of accuracy of displacement monitoring.
As shown in figure 1, in the displacement monitor of the present embodiment, the two ends of part fiber grating sensor 31 respectively with
The lower cavity wall of inner chamber and measurement pull bar 20 are connected, the epicoele of the two ends of another part fiber-optic grating sensor 31 respectively with institute inner chamber
Wall and measurement pull bar 20 are connected.Specifically, the displacement for measuring pull bar 20 is monitored using displacement monitor in user
During, when measurement pull bar 20 is overhang to inner chamber, the part fiber grating sensor 31 being connected with lower cavity wall should by drawing
Power is acted on, and its reflection wavelength changes and produces certain strain, and user can demodulate measurement pull bar 20 by (FBG) demodulator
Displacement；When measure pull bar 20 stretched into inner chamber when, another part fiber-optic grating sensor 31 being connected with upper cavity wall by
Action of pulling stress, its reflection wavelength is changed and produces certain strain, and user can be demodulated measurement by (FBG) demodulator and be drawn
The displacement of bar 20, so as to realize that displacement monitor is monitored to the way moving amount for measuring pull bar 20.So, above-mentioned connection causes
Optical fiber grating sensing component is arranged on the moving direction of measurement pull bar 20, so as to improve the measurement essence of optical fiber grating sensing component
Exactness, the degree of accuracy.In addition, above-mentioned setting make it that the assembling of fiber-optic grating sensor 31 and housing 10 is easier.
As shown in figure 1, in the displacement monitor of the present embodiment, fiber-optic grating sensor 31 includes the bullet being sequentially connected
Spring 311, metal capillary 312, fiber grating fixing terminal 313, and one end of the close spring 311 of fiber-optic grating sensor 31
It is connected with measurement pull bar 20, one end of the close fiber grating fixing terminal 313 of fiber-optic grating sensor 31 and the cavity wall of inner chamber
Connection.Specifically, metal capillary 312 is used for the sensitivity for improving fiber-optic grating sensor 31, so as to improve fiber grating biography
The measuring accuracy of sensor 31.Fiber grating fixing terminal 313 is connected with (FBG) demodulator, so as to monitor fiber grating fixing terminal
313 dependent variable, and then monitor the displacement for the measurement pull bar 20 being connected with fiber-optic grating sensor 31.
As shown in figure 1, in the displacement monitor of the present embodiment, fiber-optic grating sensor 31 also includes temperature-compensating light
Grid 314, play a part of temperature-compensating.
As shown in figure 1, in the displacement monitor of the present embodiment, displacement monitor also includes wiring construction, passes through
Wiring construction will measure pull bar 20 and will be connected with part to be monitored.So that the connection of the two is apart from adjustable, the two convenient connection.So,
Measurement pull bar 20 is linked together with part to be monitored by wiring construction, and the motion of the two has synchronism.Specifically, when waiting to supervise
Part is surveyed when moving upwards, measurement pull bar 20 is overhang to inner chamber, then the part fiber grating sensor 31 being connected with lower cavity wall by
To tension and strain is produced, user can demodulate the upward displacement of measurement pull bar 20 by (FBG) demodulator, due to measurement pull bar
20 displacement is the displacement of part to be monitored, and then draws the amount of shifting up of part to be monitored；When part to be monitored is moved downward,
Measurement pull bar 20 is stretched into inner chamber, then the part fiber grating sensor 31 being connected with upper cavity wall is by tension and generation should
Become, user can demodulate the downward displacement of measurement pull bar 20 by (FBG) demodulator, because the displacement for measuring pull bar 20 is to wait to supervise
The displacement of part is surveyed, and then draws the downward displacement of part to be monitored.Above-mentioned setting causes displacement of the staff to part to be monitored
Monitoring is easier.
It should be noted that in the present embodiment, Cast-in-situ Beam formwork structure when part to be monitored is bridge construction, by connecing
Cable architecture will measure pull bar 20 and will be connected with cast-in-place beam forms, to monitor the displacement that template is sunk during in-situ beam casting.
As shown in figure 1, in the displacement monitor of the present embodiment, length direction of the wiring construction along measurement pull bar 20 can
Adjustably set, displacement monitor also includes stringing structure, wiring construction is locked by stringing structure with measurement pull bar 20.This
Sample, will measure pull bar 20 by wiring construction and be connected with Cast-in-situ Beam formwork structure, and pass through after the two is connected to proper height
Stringing structure locks wiring construction with measurement pull bar 20, so that the displacement sunk when measurement pull bar 20 is with in-situ beam casting
Unanimously.
Fig. 2 shows the dimensional structure diagram of the wiring construction in Fig. 1.As depicted in figs. 1 and 2, in the present embodiment
In displacement monitor, measurement pull bar 20 has otch, and otch is extended downwardly by the upper surface of measurement pull bar 20, wiring construction bag
Connector 41 is included, connector 41 is slidably disposed in otch and can moved up and down relative to measurement pull bar 20.Preferably, even
Fitting 41 is dowel.Specifically, the upper surface first from measurement pull bar 20 loads dowel in otch, afterwards, uses stringing
Structure locks dowel with measurement pull bar 20 at the proper height position of measurement pull bar 20, so that dowel be drawn with measurement
Bar 20 is assembled together, and measurement pull bar 20 is moved together with dowel.So, Cast-in-situ Beam template operation dowel is drawn along measurement
When the axial direction of bar 20 is moved, measurement pull bar 20 also can together be moved with dowel and cast-in-place beam forms.Said structure
It is simple in construction, it is easily worked and assembles.
As depicted in figs. 1 and 2, in the displacement monitor of the present embodiment, wiring construction also includes connection ring 42, connection
Ring 42 is slideably set in the lateral wall of measurement pull bar 20, and the two ends of connector 41 are connected with connection ring 42.Specifically,
During connector 41 is moved up and down relative to measurement pull bar 20, connection ring 42 enters line slip relative to measurement pull bar 20.
Set connection ring 42 that stringing structure can be facilitated to measure pull bar 20 to lock with wiring construction, so, user needs to lock wiring
Structure need to only be locked to connection ring 42, spacing operation.Above-mentioned setting causes user to dock the operation of cable architecture more
Simplicity, so as to improve user experience.
Preferably, stringing structure is that screw thread is provided with multiple nuts 51, the lateral wall for measuring pull bar 20, and nut 51 is with surveying
Amount pull bar 20 is threadedly coupled to be folded between nut 51 to be locked by connection ring 42.As shown in figure 1, in the position of the present embodiment
Move in monitoring device, stringing structure is that screw thread is provided with two nuts 51, the lateral wall for measuring pull bar 20, nut 51 and measurement
Pull bar 20 is threadedly coupled to be folded between two nuts 51 to be locked by connection ring 42.Specifically, it is relative in connector 41
During measurement pull bar 20 is moved up and down, after measurement pull bar 20 is moved to proper height, user is pointed to connection ring 42
The nut 51 of upper end and the nut 51 of lower end carry out torquing operations, and nut 51 is moved up and down relative to measurement pull bar 20, from
And wiring construction is fixed on measurement pull bar 20 so that the two is moved together with cast-in-place beam forms.Nut 51 is drawn with measurement
The threaded connection of bar 20 is relatively simple, so that the assembling of the two is more prone to.
It should be noted that the structure not limited to this of stringing structure.Alternatively, as long as stringing structure can be to connection ring 42
Play limit stops effect.
As shown in Fig. 2 in the displacement monitor of the present embodiment, wiring construction also includes connecting line 43, connecting line 43
First end be connected with connector 41, the second end of connecting line 43 is provided with connecting ring 44 and is connected with cast-in-place beam forms.Specifically
Ground, one end of connecting ring 44 is connected with cast-in-place beam forms, and the other end is connected with the second end of connecting line 43, and the of connecting line 43
One end is connected with connector 41.After connector 41 is connected with the measurement locking of pull bar 20, measurement pull bar 20 and Cast-in-situ Beam are realized
The connection of template.Simple in construction, the easily assembling of said structure.
As shown in figure 1, in the displacement monitor of the present embodiment, displacement monitor also includes setting in the lumen
Return unit 60, return unit 60 is connected between the cavity wall of inner chamber and measurement pull bar 20, so that measurement pull bar 20 has outwards all the time
The movement tendency of stretching.Measurement pull bar 20 with cast-in-place beam forms together move during, return unit 60 to measurement pull bar
20 apply elastic acting force, so that measurement pull bar 20 is more steady relative to the motion of housing 10, reduce displacement monitoring dress
The vibration put and noise.
Preferably, return unit 60 is spring.Spring is conventional part, reduces the processing cost of displacement monitor.
As shown in figure 1, in the displacement monitor of the present embodiment, measurement pull bar 20 includes bar body 21 and is arranged on
The block 22 of the lower section of bar body 21, the cavity wall of inner chamber is provided with the stop part for backstop block 22, along measurement pull bar 20
Length direction, stop part and return unit 60 are located at the both sides of block 22 respectively.So, when measurement pull bar 20 rises to precalculated position
Afterwards, block 22 and stop part counter stopper, pull bar 20 is measured afterwards can not be further continued for rising.On the one hand, above-mentioned setting can be prevented
Only measurement pull bar 20 is pulled out from the inner chamber of housing 10, causes displacement monitor to be damaged；On the other hand, above-mentioned setting limit
The maximum measurement range of measurement pull bar 20 is determined, so as to ensure that user is surveyed in the range of the security measurement of measurement pull bar 20
Amount.
As shown in figure 1, in the displacement monitor of the present embodiment, inner chamber have along the stretching direction of measurement pull bar 20 according to
The demarcation chamber and measurement chamber of secondary connection, fiber-optic grating sensor 31 are arranged on measurement intracavitary, and return unit 60 and block 22 are arranged on
Intracavitary is demarcated, and demarcation chamber is separated with measurement chamber by stop part.Normally, showed in user using displacement monitor
When pouring the displacement monitoring process of beam forms, in order that must measure more accurate, it is necessary to be demarcated (initial to displacement monitor
Change), now, fiber-optic grating sensor 31 is in free elongation state, does not produce strain, the measured value of (FBG) demodulator is zero.
Return unit 60 drives block 22 to move up and down, and realizes to displacement monitor to be demarcation.
As shown in figure 1, in the displacement monitor of the present embodiment, displacement monitor also includes calibration element, housing 10
With the first demarcation hole 11 that demarcation chamber is communicated to by its outer wall, block 22 has the second demarcation hole, and the first demarcation He of hole 11
The bearing of trend in the second demarcation hole is each perpendicular to measure the length direction of pull bar 20, when the first demarcation hole 11 and the second demarcation hole are same
During axle, calibration element sequentially passes through the first demarcation hole 11 and the second demarcation hole is demarcated to the initial position for measuring pull bar 20.It is excellent
Selection of land, calibration element is bearing pin.Specifically, the installation of displacement monitor and calibration process are as follows：
1. installation process：When user needs to use displacement monitor to carry out displacement monitoring to cast-in-place beam forms, first will
Displacement monitor is fixed on ground, is linked together by wiring construction by pull bar 20 is measured with cast-in-place beam forms, afterwards,
Wiring construction is locked with measurement pull bar 20 by stringing structure.So, the installation of displacement monitor is completed.
2. calibration process：User side adjusts position of the wiring construction relative to measurement pull bar 20, while being detected using calibration element
Whether the first demarcation hole and the second demarcation hole are coaxial, and when the first demarcation hole and coaxial the second demarcation hole, calibration element can be without hindrance
Hinder through first demarcation hole and second demarcation hole when, fiber-optic grating sensor 31 be in free elongation state, then complete align
Move the demarcation of monitoring device.
Afterwards, user monitors the change in displacement of cast-in-place beam forms by (FBG) demodulator, while realizing to Cast-in-situ Beam
The way moving amount monitoring of template.Compared with unidirectional monitoring can only being realized by light grating assembly in the prior art, improve
The accuracy of displacement monitoring and the degree of accuracy.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
In this application, cavity wall of each fiber-optic grating sensor of fiber grating packaging arrangement with measurement pull bar and inner chamber connects
Connect, it is protruding or during being stretched into inner chamber from inner chamber in measurement pull bar, there is corresponding fiber-optic grating sensor all the time
It is stretched, then corresponding strain can be produced on the fiber-optic grating sensor, (FBG) demodulator demodulates measurement pull bar by strain value
Displacement, so as to realize the purpose for the displacement for monitoring measurement pull bar in real time by fiber-optic grating sensor.So, the position in the application
Move monitoring device can realize to measure pull bar real-time displacement monitoring, the displacement refer to measurement pull bar from inner chamber it is protruding or
Displacement monitor in the displacement stretched into inner chamber, i.e. the application realizes the way moving amount monitoring to measuring pull bar.With
It can only realize that unidirectional monitoring be compared by light grating assembly in the prior art, improve the accuracy of displacement monitoring and accurate
Degree.
In the description of the invention, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation shown in the drawings or position and closed
System, is for only for ease of the description present invention and simplifies description, in the case where not making opposite explanation, these nouns of locality are not indicated that
There must be specific orientation or with specific azimuth configuration and operation with the device or element for implying meaning, therefore can not manage
Solve as limiting the scope of the invention；The noun of locality " inside and outside " refers to relative to inside and outside each part profile in itself.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Furthermore, it is necessary to which explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts are distinguished, such as without Stated otherwise, above-mentioned word does not have particular meaning, therefore it is not intended that to this
The limitation of invention protection domain.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (13)
1. a kind of displacement monitor, it is characterised in that including：
Housing (10), with inner chamber；
Pull bar (20) is measured, one end of the measurement pull bar (20) is located in the inner chamber, described to measure the another of pull bar (20)
One end is stretched out in the inner chamber；
The fiber grating packaging arrangement being connected with (FBG) demodulator, the fiber grating packaging arrangement is arranged in the inner chamber, the fiber grating
Component is made up of multiple fiber-optic grating sensors (31), and each fiber-optic grating sensor (31) is respectively drawn with the measurement
The cavity wall connection of bar (20) and the inner chamber, when the measurement pull bar (20) overhangs to the inner chamber, the part optical fiber
Grating sensor (31) is stretched, when the measurement pull bar (20) is stretched into the inner chamber, fiber grating described in another part
Sensor (31) is stretched.
2. displacement monitor according to claim 1, it is characterised in that the part fiber-optic grating sensor (31)
Two ends are connected with the lower cavity wall and the measurement pull bar (20) of the inner chamber respectively, fiber-optic grating sensor described in another part
(31) two ends are connected with the upper cavity wall and the measurement pull bar (20) of institute inner chamber respectively.
3. displacement monitor according to claim 2, it is characterised in that the fiber-optic grating sensor (31) include according to
The spring (311) of secondary connection, metal capillary (312), fiber grating fixing terminal (313), and the fiber-optic grating sensor
(31) one end of the close spring (311) is connected with the measurement pull bar (20), the fiber-optic grating sensor (31)
One end close to fiber grating fixing terminal (313) is connected with the cavity wall of the inner chamber.
4. displacement monitor according to claim 1, it is characterised in that the displacement monitor also includes wiring knot
The measurement pull bar (20), is connected by structure by the wiring construction with part to be monitored.
5. displacement monitor according to claim 4, it is characterised in that the wiring construction is along the measurement pull bar
(20) length direction is adjustably set, and the displacement monitor also includes stringing structure, and the wiring construction passes through institute
Stringing structure is stated to lock with the measurement pull bar (20).
6. displacement monitor according to claim 5, it is characterised in that the measurement pull bar (20) has otch, institute
State otch to be extended downwardly by the upper surface of the measurement pull bar (20), the wiring construction includes connector (41), the connection
Part (41) is slidably disposed in the otch and can moved up and down relative to the measurement pull bar (20).
7. displacement monitor according to claim 6, it is characterised in that the wiring construction also includes connection ring
(42), the connection ring (42) is slideably set in the lateral wall of the measurement pull bar (20), and the connector (41)
Two ends are connected with the connection ring (42).
8. displacement monitor according to claim 7, it is characterised in that the stringing structure is multiple nuts (51),
Screw thread is provided with the lateral wall of the measurement pull bar (20), the nut (51) connects with described measurement pull bar (20) screw thread
Connect and be folded between the nut (51) to be locked by the connection ring (42).
9. displacement monitor according to claim 6, it is characterised in that the wiring construction also includes connecting line
(43), the first end of the connecting line (43) is connected with the connector (41), and the second end of the connecting line (43) is provided with
Connecting ring (44) is simultaneously connected with the part to be monitored.
10. displacement monitor according to claim 1, it is characterised in that the displacement monitor also includes setting
Return unit (60) in the inner chamber, the return unit (60) is connected to the cavity wall of the inner chamber and the measurement pull bar (20)
Between, so that the measurement pull bar (20) has outwardly directed movement tendency all the time.
11. displacement monitor according to claim 10, it is characterised in that the measurement pull bar (20) includes pull bar sheet
Body (21) and the block (22) being arranged on below the bar body (21), the cavity wall of the inner chamber are provided with for described in backstop
The stop part of block (22), along the length direction of the measurement pull bar (20), the stop part and the return unit (70) are respectively
Both sides positioned at the block (22).
12. displacement monitor according to claim 11, it is characterised in that the inner chamber has along the measurement pull bar
(20) demarcation chamber and measurement chamber that stretching direction is sequentially communicated, the fiber-optic grating sensor (31) are arranged on the measurement chamber
Interior, the return unit (60) and the block (22) are arranged on the demarcation intracavitary, and the demarcation chamber leads to the measurement chamber
The stop part is crossed to separate.
13. displacement monitor according to claim 12, it is characterised in that the displacement monitor also includes demarcation
Part, the housing (10) has the first demarcation hole that the demarcation chamber is communicated to by its outer wall, and the block (22) has second
Hole is demarcated, and the bearing of trend in the first demarcation hole and the second demarcation hole is each perpendicular to the length for measuring pull bar (20)
Direction is spent, when the described first demarcation hole and coaxial the described second demarcation hole, the calibration element sequentially passes through first demarcation
Hole and the second demarcation hole are demarcated to the initial position of the measurement pull bar (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527649.2A CN107192339A (en) | 2017-06-30 | 2017-06-30 | Displacement monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527649.2A CN107192339A (en) | 2017-06-30 | 2017-06-30 | Displacement monitor |
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|---|---|
| CN107192339A true CN107192339A (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710527649.2A Withdrawn CN107192339A (en) | 2017-06-30 | 2017-06-30 | Displacement monitor |
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| CN (1) | CN107192339A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243327A (en) * | 2019-06-14 | 2019-09-17 | 上海交通大学 | The monodisplacement sensor and method of measurement soil and underground structure dynamic Relative sliding |
| CN113758433A (en) * | 2021-08-30 | 2021-12-07 | 武汉理工大学 | Optical fiber joint meter and joint measuring method thereof |
| CN114754684A (en) * | 2022-05-10 | 2022-07-15 | 武汉科技大学 | Fiber grating three-dimensional deformation measuring device and measuring method |
| CN114789363A (en) * | 2022-05-11 | 2022-07-26 | 上汽通用五菱汽车股份有限公司 | Compensation method and system for improving machining center precision and storage medium |
-
2017
- 2017-06-30 CN CN201710527649.2A patent/CN107192339A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243327A (en) * | 2019-06-14 | 2019-09-17 | 上海交通大学 | The monodisplacement sensor and method of measurement soil and underground structure dynamic Relative sliding |
| CN113758433A (en) * | 2021-08-30 | 2021-12-07 | 武汉理工大学 | Optical fiber joint meter and joint measuring method thereof |
| CN114754684A (en) * | 2022-05-10 | 2022-07-15 | 武汉科技大学 | Fiber grating three-dimensional deformation measuring device and measuring method |
| CN114754684B (en) * | 2022-05-10 | 2022-12-27 | 武汉科技大学 | Fiber grating three-dimensional deformation measuring device and measuring method |
| CN114789363A (en) * | 2022-05-11 | 2022-07-26 | 上汽通用五菱汽车股份有限公司 | Compensation method and system for improving machining center precision and storage medium |
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Application publication date: 20170922 |