CN207662339U - A kind of eddy current displacement sensor sensitivity calibration device - Google Patents
A kind of eddy current displacement sensor sensitivity calibration device Download PDFInfo
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- CN207662339U CN207662339U CN201721758188.1U CN201721758188U CN207662339U CN 207662339 U CN207662339 U CN 207662339U CN 201721758188 U CN201721758188 U CN 201721758188U CN 207662339 U CN207662339 U CN 207662339U
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- guide rail
- eddy current
- displacement sensor
- current displacement
- supporting rod
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Abstract
The utility model is related to the calibration technique fields of sensor, disclose a kind of eddy current displacement sensor sensitivity calibration device, including track base, guide rail, supporting rod, displacement measurement component and guide rail drive component, it is provided with sliding slot on the track base, the guide rail is arranged in the sliding slot and is moved along the sliding slot, the supporting rod is arranged on the guide rail, and institute's displacement measurement component and eddy current displacement sensor are fixed on the supporting rod.The utility model eddy current displacement sensor sensitivity calibration device, which need not destroy measured piece, can complete Sensitivity Calibration, damage and waste easy to operate and that will not cause measured piece.
Description
Technical field
The utility model is related to the calibration technique field of sensor more particularly to a kind of eddy current displacement sensor sensitivity
Caliberating device.
Background technology
It is eddy current sensor that eddy current displacement sensor, which is according to scales made of eddy current effect,.Current vortex
Fore-lying device in displacement sensor system generates medium-high frequency oscillating current, and probe coil is flowed by extension cable, in probe head
The magnetic field of alternation is generated in the coil in portion.When tested metallic object is close to this magnetic field, then induced current is generated in this metal surface,
At the same time the current vortex field is also generated a direction alternating magnetic field opposite with head coil direction and is made due to its reaction
The amplitude and phase of head coil high-frequency current are changed (effective impedance of coil)；This variation and metal bulk permeability,
Conductivity, the geometry of coil, geometric dimension, power frequency and head coil are to parameters such as the distances on metallic conductor surface
It is related.When other parameters are constant, the effective impedance of coil changes, current vortex with probe to the spacing between measured body surface
Displacement sensor is exactly the measurement realized according to this principle to parameters such as displacement, the vibrations of metal object.
Since different attribute material and workpiece surface processing mode all have shadow to the sensitivity of eddy current displacement sensor
It rings, therefore is required to carry out Sensitivity Calibration to eddy current displacement sensor before measuring every time.Eddy current displacement sensor is surveyed
Amount is displacement parameter, and output is voltage parameter, sensitivity=voltage/displacement.
It can be seen from the above, the calibration of eddy current displacement sensor sensitivity is that non-contacting vibration displacement measurement is essential
One step, existing scaling method are typically to change the distance between sensor probe and measured piece using mobile measured piece, are marked
Determine transducer sensitivity.But it since mobile measured piece is inconvenient, needs to destroy measured piece under normal conditions, takes out a fritter
It is demarcated, causes great waste.
Utility model content
(1) technical problems to be solved
The utility model provides a kind of eddy current displacement sensor sensitivity calibration device, to solve existing current vortex displacement
Need to destroy measured piece when transducer calibration to wasting problem.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of eddy current displacement sensor Sensitivity Calibration dress
It sets, including track base, guide rail, supporting rod, displacement measurement component and guide rail drive component, cunning is provided on the track base
Slot, the guide rail are arranged in the sliding slot and are moved along the sliding slot, and the supporting rod is arranged on the guide rail, institute's rheme
Shift measurement component and eddy current displacement sensor are fixed on the supporting rod.
Further, the track base includes bottom plate and is arranged along the traffic direction of the guide rail at the edge of the bottom plate
Side plate, be provided with the first caging bolt on the side plate, first caging bolt compresses the side of the guide rail to limit
Make the double swerve of the guide rail.
Further, the track base is fixedly arranged above upper cover plate, and the second caging bolt, institute are provided on the upper cover plate
It states the second caging bolt and compresses the upper surface of the guide rail to limit teetertottering for the guide rail.
Further, the end casing of the restricted guide rail sliding, the guide rail driving is arranged in one end of the track base
Component is the adjusting bolt being arranged on the end casing, and the adjusting bolt passes through the end casing to connect with the guide rail screw thread
It connects.
Further, the length of the upper cover plate is less than the length of the guide rail, and the supporting rod is arranged in the upper cover
On guide rail on the outside of plate.
Further, the supporting rod is corresponded on the guide rail and is provided with threaded hole, and the lower end of the supporting rod carries spiral shell
Line, the supporting rod are threadedly coupled with the guide rail by the threaded hole.
Further, clip, institute's displacement measurement component and current vortex displacement sensing are fixed on the supporting rod
Device is fixed on by the clip on the supporting rod.
Further, institute's displacement measurement component is dial gauge or amesdial.
Further, the track base, the end casing and the upper cover plate are structure as a whole.
Further, the bottom plate of the track base and side plate are structure as a whole, and the upper cover plate passes through the first fastening bolt
It is fixedly connected with the side plate, the end casing is fixedly connected by the second fastening bolt with the side plate.
(3) advantageous effect
The above-mentioned technical proposal of the utility model has the following advantages that：A kind of current vortex displacement provided by the utility model passes
Displacement measurement component and eddy current displacement sensor are arranged on moveable track sensor sensitivity calibration device, because
This can change the distance between eddy current displacement sensor and measured piece by mobile eddy current displacement sensor, to complete
The calibration of transducer sensitivity.The eddy current displacement sensor sensitivity calibration device need not destroy measured piece and can complete
Sensitivity Calibration, damage and waste easy to operate and that measured piece will not be caused.
The technical issues of being solved in addition to the utility model described above, composition technical solution technical characteristic and
Have except advantage caused by the technical characteristic of these technical solutions, the other technical characteristics of the utility model and these technologies are special
The advantages of sign is brought, will further illustrate in conjunction with attached drawing.
Description of the drawings
Fig. 1 is the schematic front view of the utility model embodiment eddy current displacement sensor sensitivity calibration device；
Fig. 2 is the A-A sectional views of Fig. 1.
In figure：1：Track base；2：Guide rail；3：Supporting rod；4：Upper cover plate；5：End casing；6：Second caging bolt；7：It adjusts
Bolt；8：Second fastening bolt；9：First fastening bolt；10：First caging bolt.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work, all
Belong to the range of the utility model protection.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multigroup " are meant that two
A or more than two, " several ", " several ", " several groups " are meant that one or more.
As shown in Figure 1, the eddy current displacement sensor sensitivity calibration device that the utility model embodiment provides, including lead
Rail chair 1, guide rail 2, supporting rod 3, displacement measurement component and guide rail drive component are provided with sliding slot on the track base 1, described
Guide rail 2 is arranged in the sliding slot and is moved along the sliding slot, and the supporting rod 3 is arranged on the guide rail 2, and the displacement is surveyed
Amount component and eddy current displacement sensor are fixed on the supporting rod 3.
It is understood that the present embodiment eddy current displacement sensor sensitivity calibration device, displacement measurement component and electricity
Eddy displacement sensor is fixed on the supporting rod 3, to be moved along the sliding slot in guide rail drive component driving guide rail 2
When, institute's displacement measurement component and eddy current displacement sensor are also with the guide rail synchronizing moving, to change current vortex displacement
The distance between sensor and measured piece；Displacement measurement component be used for measure between eddy current displacement sensor and measured piece away from
From, can be dial gauge or amesdial etc., in specific installation, the contact point of dial gauge or amesdial can be attached to by
Survey part surface or the probe contacts with eddy current displacement sensor.
As illustrated in fig. 1 and 2, as a specific embodiment of the utility model, the track base 2 include bottom plate and
Side plate is arranged in the side of the bottom plate along the traffic direction of the guide rail, and the track base 1 is fixedly arranged above upper cover plate 4, described
The end casing 5 of the restricted guide rail sliding is arranged in one end of track base 1；The first caging bolt 10 is provided on the side plate,
First caging bolt 10 compresses the side of the guide rail 2 to limit the double swerve of the guide rail 2；The upper cover plate 4
On be provided with the second caging bolt 6, second caging bolt 6 compresses the upper surface of the guide rail 1 to limit the guide rail 1
Teetertotter.The guide rail drive component is the adjusting bolt 7 being arranged on the end casing 5, and the adjusting bolt 7 passes through
The end casing 5 is threadedly coupled with the guide rail 1.
That is, the bottom plate of the track base 2 forms the sliding slot of guide rail 2 with side plate, while it coordinates upper cover plate 4, end casing 5
Form the box-like structure of only one end open.The left and right directions and upper and lower directions of track 2, which are limited bolt limit, prevents it
It shakes, adjusting bolt 7 and upper and lower, left and right fixed guide rail 2 form the structure of similar leading screw, so rotating adjusting spiral shell
Bolt 7 may be implemented guide rail 2 and be moved along sliding slot direction.Specifically in Fig. 1, the moving direction of guide rail is the vertical direction with paper,
It is the movement of left and right directions in Fig. 2.
It should be noted that the bottom plate of the track base 2 can be structure as a whole with side plate and end casing, upper cover plate；
Can be as illustrated in fig. 1 and 2, the upper cover plate 4 is fixedly connected by the first fastening bolt 9 with the side plate, the end cap
Plate 5 is fixedly connected by the second fastening bolt 8 with the side plate of the track base 2.
It is understood that track base 1 plays installation foundation and guiding role；End casing 5 is installed by the second fastening bolt 8
In guide holder side, glide direction position-limiting action can be played to guide rail；The movement of track is controlled using adjusting bolt 7, this
Sample adjusts that displacement is smaller and relative adjustment precision higher, is conducive to the Sensitivity Calibration of eddy current displacement sensor.Meanwhile the
Two caging bolts 6 carry out vertical direction limit to guide rail, adjust the torque of the first caging bolt 6, guide rail 2 can be made to be close to guide rail
Seat sliding slot lower surface, prevents guide rail from shaking and influencing dial gauge test result；Second caging bolt 10 laterally limits guide rail 2
Position adjusts the torque of the second caging bolt 10, guide rail 2 can be made to be close to track base sliding slot side surface, prevent guide rail from shaking.
It influences each other in order to which the movement of guide rail 2 is not generated with supporting rod 3, as illustrated in fig. 1 and 2, upper cover plate 4 is along sliding slot direction
Length be less than the length of guide rail 2, supporting rod 3 can be thus arranged and be located on the part on the outside of upper cover plate 4 in guide rail 2.
As a kind of specific fixed form of supporting rod 3, the screw thread for installing the supporting rod is provided on the guide rail 2
The lower end in hole, the supporting rod is threaded, and the supporting rod is threadedly coupled with the guide rail by the threaded hole.
In order to facilitate the fixation of dial gauge or amesdial and eddy current displacement sensor, it is fixed on the supporting rod
Two clips, institute's displacement measurement component and the eddy current displacement sensor are fixed on the support by a clip respectively
On bar.
The utility model embodiment eddy current displacement sensor sensitivity calibration device, by by dial gauge (or amesdial)
It being fixed on guide rail using supporting rod with eddy current displacement sensor, adjusting bolt can adjust guide rail position, dial gauge (or thousand
Divide table) and electric vortex displacement sensor probe synchronizing moving.Therefore, eddy current displacement sensor can be read by dial gauge to visit
Head displacement distance obtains voltage change range by eddy current displacement sensor, and then calculates transducer sensitivity.
In conclusion the utility model embodiment eddy current displacement sensor sensitivity calibration device improves sensor spirit
The working efficiency of sensitivity calibration, and avoid the measured piece wasting of resources；Device dismounting simultaneously is easy for installation, and reliability is high, does not allow
It is fragile.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of eddy current displacement sensor sensitivity calibration device, it is characterised in that：Including track base, guide rail, supporting rod, position
Shift measurement component and guide rail drive component, sliding slot is provided on the track base, and the guide rail is arranged in the sliding slot simultaneously
It is moved along the sliding slot, the supporting rod is arranged on the guide rail, institute's displacement measurement component and eddy current displacement sensor
It is fixed on the supporting rod.
2. eddy current displacement sensor sensitivity calibration device according to claim 1, it is characterised in that：The track base
It is provided with first including bottom plate and on the side plate that the edge of the bottom plate is arranged along the traffic direction of the guide rail, the side plate
Caging bolt, first caging bolt compress the side of the guide rail to limit the double swerve of the guide rail.
3. eddy current displacement sensor sensitivity calibration device according to claim 2, it is characterised in that：The track base
It is fixedly arranged above upper cover plate, the second caging bolt is provided on the upper cover plate, second caging bolt compresses the guide rail
Upper surface to limit teetertottering for the guide rail.
4. eddy current displacement sensor sensitivity calibration device according to claim 3, it is characterised in that：The track base
One end the end casing of restricted guide rail sliding is set, the guide rail drive component is the tune being arranged on the end casing
Bolt is saved, the adjusting bolt is threadedly coupled across the end casing with the guide rail.
5. eddy current displacement sensor sensitivity calibration device according to claim 3, it is characterised in that：The upper cover plate
Length be less than the length of the guide rail, the supporting rod is arranged on the guide rail on the outside of the upper cover plate.
6. according to claim 1-5 any one of them eddy current displacement sensor sensitivity calibration devices, it is characterised in that：Institute
State and correspond to the supporting rod on guide rail and be provided with threaded hole, the lower end of the supporting rod is threaded, the supporting rod with it is described
Guide rail is threadedly coupled by the threaded hole.
7. according to claim 1-5 any one of them eddy current displacement sensor sensitivity calibration devices, it is characterised in that：Institute
It states and is fixed with clip on supporting rod, institute's displacement measurement component and the eddy current displacement sensor are fixed on by the clip
On the supporting rod.
8. according to claim 1-5 any one of them eddy current displacement sensor sensitivity calibration devices, it is characterised in that：Institute
Displacement measurement component is dial gauge or amesdial.
9. eddy current displacement sensor sensitivity calibration device according to claim 4, it is characterised in that：The guide rail
Seat, the end casing and the upper cover plate are structure as a whole.
10. eddy current displacement sensor sensitivity calibration device according to claim 4, it is characterised in that：The guide rail
The bottom plate and side plate of seat are structure as a whole, and the upper cover plate is fixedly connected by the first fastening bolt with the side plate, the end
Cover board is fixedly connected by the second fastening bolt with the side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721758188.1U CN207662339U (en) | 2017-12-15 | 2017-12-15 | A kind of eddy current displacement sensor sensitivity calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721758188.1U CN207662339U (en) | 2017-12-15 | 2017-12-15 | A kind of eddy current displacement sensor sensitivity calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207662339U true CN207662339U (en) | 2018-07-27 |
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ID=62941457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721758188.1U Active CN207662339U (en) | 2017-12-15 | 2017-12-15 | A kind of eddy current displacement sensor sensitivity calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207662339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251909A (en) * | 2021-06-25 | 2021-08-13 | 清华大学 | Calibration device and method of eddy current sensor for measuring displacement of rotating shaft |
-
2017
- 2017-12-15 CN CN201721758188.1U patent/CN207662339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251909A (en) * | 2021-06-25 | 2021-08-13 | 清华大学 | Calibration device and method of eddy current sensor for measuring displacement of rotating shaft |
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