CN211977864U - Displacement sensor calibrating device - Google Patents
Displacement sensor calibrating device Download PDFInfo
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- CN211977864U CN211977864U CN202020992489.6U CN202020992489U CN211977864U CN 211977864 U CN211977864 U CN 211977864U CN 202020992489 U CN202020992489 U CN 202020992489U CN 211977864 U CN211977864 U CN 211977864U
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- displacement sensor
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Abstract
The utility model relates to a sensor detection area discloses a displacement sensor calibrating device. The displacement sensor calibration device comprises a fixed seat, a right-angle plate and a calibration sheet, wherein the fixed seat is configured to fix the displacement sensor, the fixed seat is provided with a first reference surface, and the displacement sensor is placed on the first reference surface; the right-angle plate comprises a connecting plate and a reference plate which are perpendicular to each other, the connecting plate is detachably connected with the fixed seat, the reference plate is provided with a second reference surface which is parallel to the first reference surface, and the detection end of the displacement sensor can abut against the second reference surface; the thickness of calibration piece is for predetermineeing thickness, and the calibration piece can be inserted between displacement sensor's sense terminal and the second reference surface. The utility model provides a displacement sensor calibrating device, simple structure, convenient to use has improved calibration efficiency, and human error is little, and the calibration accuracy is high, has improved the detection accuracy of the product that awaits measuring.
Description
Technical Field
The utility model relates to a sensor detection area especially relates to a displacement sensor calibrating device.
Background
The displacement sensor is also called as a linear sensor, and is a metal-induced linear device, and the sensor is used for converting various measured physical quantities into electric quantities. In the machining production process of the diesel engine cylinder body and the cylinder cover, a displacement sensor is usually adopted to detect the size of a workpiece, and whether the product is qualified is detected.
Before detection, the linear coefficient of the displacement sensor needs to be calibrated, the linear calibration of the existing displacement sensor usually adopts two calibration gauges with different sizes to calibrate and detect, the calibration gauges are circular, and one diameter value is measured by the two displacement sensors. The main problem of the method for testing linearity is that there is a position error between the measuring head (the mechanism for mounting the displacement sensor) and the calibration gauge, which results in inconsistency of repeatedly measured data, and the variation value of the displacement sensor cannot be accurately measured, and finally results in inaccurate linearity calibration of the sensor. Under the condition of inaccurate linearity, errors generated by the position degree finally cause that the difference between the data of the measured workpiece and the actual size is larger, and the measured size is fed back to the machine tool to compensate and process the next workpiece, so that the quality hidden danger is generated.
SUMMERY OF THE UTILITY MODEL
Based on above problem, the utility model aims to provide a displacement sensor calibrating device, the calibration accuracy is high, and human error is little.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a displacement sensor calibration device, comprising:
a fixing base configured to fix the displacement sensor, the fixing base being provided with a first reference surface on which the displacement sensor is placed;
the right-angle plate comprises a connecting plate and a reference plate which are perpendicular to each other, the connecting plate is detachably connected with the fixed seat, the reference plate is provided with a second reference surface which is parallel to the first reference surface, and the detection end of the displacement sensor can abut against the second reference surface;
the thickness of calibration piece is for predetermineeing thickness, the calibration piece can be inserted in displacement sensor's sense terminal with between the second reference surface.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the calibration piece is the clearance gauge.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the connecting plate with one of them is provided with the draw-in groove of fixing base, another be provided with can with the card of draw-in groove joint is protruding.
As the utility model discloses a displacement sensor calibrating device's preferred scheme still includes the fastener, be provided with the mounting hole on the fixing base, the fastener runs through displacement sensor's connecting hole, and with the mounting hole is connected.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the mounting hole is provided with a plurality ofly.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the fastener is provided with at least two.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the fastener is the bolt.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the fixing base with the right-angle plate is formed by rigid material preparation.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the fixing base is the cuboid.
As the utility model discloses a displacement sensor calibrating device's preferred scheme, the connecting plate with benchmark board integrated into one piece.
The utility model has the advantages that:
the utility model provides a displacement sensor calibrating device, when the calibration, be fixed in displacement sensor on the first reference surface of fixing base, displacement sensor's sense terminal supports with the second reference surface of benchmark board and leans on, record first registration, fill in the calibration piece between displacement sensor's sense terminal and the second reference surface, record the second registration, the difference through first registration and second registration compares with the thickness of predetermineeing of calibration piece, obtain displacement sensor's linear coefficient, through adjusting displacement sensor internal resistance, adjust linear coefficient to 1, the calibration is accomplished. The utility model provides a displacement sensor calibrating device, simple structure, convenient to use has improved calibration efficiency, and human error is little, and the calibration accuracy is high, has improved the detection accuracy of the product that awaits measuring.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a displacement sensor calibration apparatus according to an embodiment of the present invention;
fig. 2 is a schematic front view of a displacement sensor calibration device according to an embodiment of the present invention;
fig. 3 is a schematic top view of a displacement sensor calibration device according to an embodiment of the present invention;
fig. 4 is a schematic side view of a displacement sensor calibration device according to an embodiment of the present invention.
In the figure:
1-a fixed seat; 2-a square plate; 3-a calibration sheet; 4-a fastener;
11-a first datum plane; 12-mounting holes;
21-a connecting plate; 22-a reference plate; 221-a second datum plane;
100-a displacement sensor; 101-a detection end; 102-connecting hole.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the present embodiment provides a displacement sensor calibration device, which includes a fixing base 1, a rectangular plate 2 and a calibration sheet 3. Wherein the holder 1 is configured to hold a displacement sensor 100, the holder 1 being provided with a first reference surface 11, the displacement sensor 100 being placed on the first reference surface 11. The rectangular plate 2 comprises a connecting plate 21 and a reference plate 22 which are perpendicular to each other, the connecting plate 21 is detachably connected with the fixed seat 1, the reference plate 22 is provided with a second reference surface 221 which is parallel to the first reference surface 11, and the detection end 101 of the displacement sensor 100 can abut against the second reference surface 221. The thickness of the calibration sheet 3 is a predetermined thickness, and the calibration sheet 3 can be inserted between the detection end 101 of the displacement sensor 100 and the second reference surface 221.
During calibration, the displacement sensor 100 is fixed on the first reference surface 11 of the fixed seat 1, the detection end 101 of the displacement sensor 100 abuts against the second reference surface 221 of the reference plate 22 to measure a first index, the calibration sheet 3 is inserted between the detection end 101 of the displacement sensor 100 and the second reference surface 221 to measure a second index, the difference value of the first index and the second index is compared with the preset thickness of the calibration sheet 3 to obtain the linear coefficient of the displacement sensor 100, the linear coefficient is adjusted to 1 by adjusting the internal resistance of the displacement sensor 100, and calibration is completed.
To accommodate the calibration of the displacement sensor 100 for a variety of measurement ranges, the calibration plate 3 is optionally a feeler. The feeler has a plurality of gauges which, by means of a single gauge of different thickness and a plurality of gauge combinations of different thicknesses, can be adapted to the calibration of the displacement sensor 100 for a plurality of measuring ranges.
For convenient disassembly, optionally, one of the connecting plate 21 and the fixing seat 1 is provided with a clamping groove, and the other is provided with a clamping protrusion capable of being clamped with the clamping groove. The clamping protrusion has elasticity, and is clamped by elastic acting force when being clamped into the clamping groove. Of course, in other embodiments, the connection plate 21 and the fixing base 1 may be detachably connected by a screw. Can prepare the rectangular plate 2 of a plurality of dimensions, realize with the quick dismantlement of fixing base 1, improve the calibration efficiency to the displacement sensor 100 of multiple model.
In order to facilitate fixing the displacement sensor 100 on the fixing base 1, the displacement sensor calibration device optionally further includes a fastening member 4, wherein a mounting hole 12 is formed on the fixing base 1, and the fastening member 4 penetrates through the connecting hole 102 of the displacement sensor 100 and is connected with the mounting hole 12. In order to accommodate a plurality of models of displacement sensors 100, the mounting hole 12 is optionally provided in plurality. To prevent the displacement sensor 100 from shaking, optionally, at least two fasteners 4 are provided. Optionally, the fastener 4 is a bolt. Convenient material taking and low cost.
In order to improve the calibration accuracy, the fixing base 1 and the rectangular plate 2 are made of rigid materials, so that the fixing base 1 and the rectangular plate 2 are prevented from being elastically deformed to influence the calibration accuracy. Optionally, the fixing base 1 is a rectangular parallelepiped. Simple structure, convenient processing and low cost. For ease of processing, the connecting plate 21 and the reference plate 22 are optionally integrally formed.
In the calibration apparatus for a displacement sensor according to the present embodiment, when calibrating the linear coefficient of the displacement sensor 100, the work flow is substantially as follows: the displacement sensor 100 is fixed on the first reference surface 11 of the fixed seat 1 through the fastener 4, the detection end 101 of the displacement sensor 100 abuts against the second reference surface 221 of the reference plate 22, a first index is measured, the calibration sheet 3 is inserted between the detection end 101 of the displacement sensor 100 and the second reference surface 221, a second index is measured, and the linear coefficient mu of the displacement sensor 100 is obtained by comparing the difference value of the first index and the second index with the preset thickness of the calibration sheet 3. When the linear coefficient of the displacement sensor 100 is adjusted, an adjustable resistor R0 and a fixed resistor R1 of the displacement sensor 100 in a four-channel circuit board are found, the fixed resistor is used for adjusting the linear coefficient, the adjustable resistor is used for fine adjustment of the linear coefficient, the fixed resistor is replaced by a new resistor R2 (the resistor value R2 is R1/. mu.), after the replacement is finished, the new linear coefficient mu 1 is detected again by a linear coefficient detection method, the linear coefficient is about 1 under normal conditions, and the linear coefficient can be accurately adjusted to 1 by adjusting the adjustable resistor R0.
The utility model provides a displacement sensor calibrating device, simple structure, convenient to use has improved calibration efficiency, and human error is little, and the calibration accuracy is high, has improved the detection accuracy of the product that awaits measuring.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A displacement sensor calibration device, comprising:
a holder (1) configured to hold the displacement sensor (100), the holder (1) being provided with a first reference surface (11), the displacement sensor (100) being placed on the first reference surface (11);
the right-angle plate (2) comprises a connecting plate (21) and a reference plate (22) which are perpendicular to each other, the connecting plate (21) is detachably connected with the fixed seat (1), the reference plate (22) is provided with a second reference surface (221) which is parallel to the first reference surface (11), and the detection end (101) of the displacement sensor (100) can abut against the second reference surface (221);
the calibration piece (3), the thickness of calibration piece (3) is for predetermineeing thickness, calibration piece (3) can be stuffed into displacement sensor (100) detection end (101) with between the second reference surface (221).
2. Displacement sensor calibration device according to claim 1, characterized in that the calibration plate (3) is a feeler.
3. The displacement sensor calibration device according to claim 1, wherein one of the connection plate (21) and the fixing base (1) is provided with a clamping groove, and the other one is provided with a clamping protrusion capable of being clamped with the clamping groove.
4. The displacement sensor calibration device according to claim 1, further comprising a fastening member (4), wherein the fixing base (1) is provided with a mounting hole (12), and the fastening member (4) penetrates through the connecting hole (102) of the displacement sensor (100) and is connected with the mounting hole (12).
5. Displacement sensor calibration device according to claim 4, characterised in that said mounting hole (12) is provided in plurality.
6. Displacement sensor calibration device according to claim 4, characterised in that said fastening means (4) are provided in at least two.
7. Displacement sensor calibration device according to claim 4, characterised in that said fasteners (4) are bolts.
8. Displacement sensor calibration device according to claim 1, characterized in that the holder (1) and the angled plate (2) are both made of a rigid material.
9. Displacement sensor calibration device according to claim 1, characterized in that the holder (1) is a cuboid.
10. Displacement sensor calibration device according to any of claims 1-9, characterized in that the connection plate (21) and the reference plate (22) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992489.6U CN211977864U (en) | 2020-06-03 | 2020-06-03 | Displacement sensor calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992489.6U CN211977864U (en) | 2020-06-03 | 2020-06-03 | Displacement sensor calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211977864U true CN211977864U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020992489.6U Active CN211977864U (en) | 2020-06-03 | 2020-06-03 | Displacement sensor calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211977864U (en) |
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2020
- 2020-06-03 CN CN202020992489.6U patent/CN211977864U/en active Active
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