CN220230418U - LVDT displacement sensor calibrating device - Google Patents
LVDT displacement sensor calibrating device Download PDFInfo
- Publication number
- CN220230418U CN220230418U CN202321726927.4U CN202321726927U CN220230418U CN 220230418 U CN220230418 U CN 220230418U CN 202321726927 U CN202321726927 U CN 202321726927U CN 220230418 U CN220230418 U CN 220230418U
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- displacement sensor
- sensor
- lvdt displacement
- slide rail
- calibration
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 66
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011173 large scale experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model belongs to the technical field of sensor calibration, and discloses an LVDT displacement sensor calibration device; the servo motor is connected with the sensor calibration equipment through a servo driver, and a motor shaft of the servo motor is provided with a multi-circle absolute value encoder; a ball screw is rotatably arranged in the linear slide rail, and one end of the ball screw penetrates through the linear slide rail to be connected with a motor shaft of the servo motor; the ball screw is sleeved with a sliding block in threaded connection with the ball screw, and the sliding block is in sliding connection with the linear sliding rail; the other end of the linear slide rail is provided with an LVDT displacement sensor, and a sliding rod of the LVDT displacement sensor is connected with the sliding block; one side of the linear slide rail is provided with a fixing frame, a calibration sensor is arranged on the fixing frame, and a slide column of the calibration sensor is connected with the slide block. And calibrating the LVDT displacement sensor through the sensor calibration equipment, and calibrating the LVDT displacement sensor through the calibration sensor, the servo motor, the ball screw and the sliding block.
Description
Technical Field
The utility model belongs to the technical field of sensor calibration, and relates to an LVDT displacement sensor calibration device.
Background
With the increasing demand of China on development of various spacecrafts, aircrafts and ships, the application amount of the displacement sensor in large-scale experiments is larger and larger, wherein the displacement sensor is used as a common sensor-LVDT (variable linear differential transformer) displacement sensor for the position of an accelerator rod and the position of an oil needle in an aeroengine, and plays an important role in measuring displacement. As the displacement sensor is used as an important sensing detection means for obtaining test displacement information, the measurement value is difficult to be accurate in work because of no unified calibration standard and calibration device, generally, a universal length measuring tool is adopted to measure the probe displacement of the displacement sensor and compare the probe displacement with an output signal, the working difficulty of a calibrator is high, a large amount of manpower, material resources and time are consumed, and meanwhile, the reliability and the data quality are difficult to be ensured due to a large amount of manual operation.
Disclosure of Invention
The utility model solves the technical problem of providing the LVDT displacement sensor calibration device, which calibrates the LVDT displacement sensor through sensor calibration equipment, calibrates the LVDT displacement sensor through a calibration sensor, a servo motor, a ball screw and a sliding block, and ensures the reliability of the calibration.
The utility model is realized by the following technical scheme:
the LVDT displacement sensor calibration device comprises a base and a linear slide rail arranged at the top of the base;
one end of the linear slide rail is provided with a servo motor, the servo motor is connected with sensor calibration equipment through a servo driver, a motor shaft of the servo motor is provided with a multi-circle absolute value encoder, and the multi-circle absolute value encoder is connected with the servo driver;
a ball screw is rotatably arranged in the linear slide rail, and one end of the ball screw penetrates through the linear slide rail to be connected with a motor shaft of the servo motor; the ball screw is sleeved with a sliding block in threaded connection with the ball screw, and the sliding block is in sliding connection with the linear sliding rail;
the other end of the linear slide rail is provided with an LVDT displacement sensor, and a sliding rod of the LVDT displacement sensor is connected with the sliding block; the LVDT displacement sensor is connected with sensor calibration equipment through a conditioning acquisition unit;
a fixing frame is arranged on one side of the linear sliding rail, a calibration sensor is arranged on the fixing frame, and a sliding column of the calibration sensor is connected with the sliding block; the calibration sensor is connected with the sensor calibration equipment through the communication module.
Further, a clamping seat is arranged at the top of the linear slide rail, and the LVDT displacement sensor is arranged on the linear slide rail through the clamping seat.
Further, a sliding rod connecting piece is arranged at the top of the sliding block, and a mounting hole is formed in the sliding rod connecting piece;
the tail end of the sliding rod of the LVDT displacement sensor is provided with a limit baffle, the limit baffle is provided with a stud, the stud penetrates through the mounting hole, and the sliding rod of the LVDT displacement sensor is fixed by matching with a nut and the limit baffle.
Further, a sliding column connecting piece is arranged on the sliding block, and the tail end of the sliding column of the calibration sensor is connected with the sliding column connecting piece.
Further, the servo motor is arranged on the linear slide rail through the motor base, and one end of the ball screw penetrates through the linear slide rail to be connected with a motor shaft of the servo motor.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the LVDT displacement sensor calibration device provided by the utility model, sensor calibration equipment calibrates displacement for the LVDT displacement sensor through the conditioning acquisition unit; after calibration is completed, the sensor calibration equipment controls the servo motor to rotate through the servo driver, so that the ball screw can drive the sliding block to slide in the linear sliding rail to a calibrated displacement, and when the sliding block slides, the sliding rod of the LVDT displacement sensor and the sliding column of the calibration sensor simultaneously stretch along with the sliding block; the sensor calibration equipment acquires the displacement of the LVDT displacement sensor through the conditioning acquisition unit, acquires the displacement of the calibration sensor through the communication module, and can acquire the calibration of the LVDT displacement sensor through taking the difference; the problem that the reliability and the data quality are difficult to be ensured due to manual operation is solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an LVDT displacement sensor calibration device;
FIG. 2 is a top view of an LVDT displacement sensor calibration device;
reference numerals: 1 is a base, 2 is a linear slide rail, 3 is a servo motor, 4 is a ball screw, 5 is a slide block, 6 is an LVDT displacement sensor, 7 is a slide rod, 8 is a fixing frame, 9 is a calibration sensor, 10 is a slide column, 11 is a clamping seat, 12 is a slide rod connecting piece, 13 is a limit baffle, 14 is a stud, 15 is a slide column connecting piece, and 16 is a motor seat.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the utility model.
See fig. 1-2; the utility model discloses an LVDT displacement sensor calibration device, which comprises a base 1 and a linear slide rail 2 arranged at the top of the base 1.
One end of the linear slide rail 2 is provided with a servo motor 3, the servo motor 3 is connected with sensor calibration equipment through a servo driver, a motor shaft of the servo motor 3 is provided with a multi-turn absolute value encoder, and the multi-turn absolute value encoder is connected with the servo driver.
The multi-turn absolute value encoder is used for detecting the number of turns of the motor shaft of the servo motor 3 to determine the position of the slider 5 in the linear slide 2.
A ball screw 4 is rotatably arranged in the linear slide rail 2, and one end of the ball screw 4 penetrates through the linear slide rail 2 and is connected with a motor shaft of the servo motor 3; the ball screw 4 is sleeved with a sliding block 5 in threaded connection with the ball screw, and the sliding block 5 is in sliding connection with the linear sliding rail 2.
The other end of the linear slide rail 2 is provided with an LVDT displacement sensor 6, and a sliding rod 7 of the LVDT displacement sensor 6 is connected with the sliding block 5; the LVDT displacement sensor 6 is connected with the sensor calibration device through a conditioning acquisition unit.
A fixing frame 8 is arranged on one side of the linear slide rail 2, a calibration sensor 9 is arranged on the fixing frame 8, and a slide column 10 of the calibration sensor 9 is connected with the slide block 5; the calibration sensor 9 is connected to the sensor calibration device via a communication module.
Specifically, the top of the sliding block 5 is provided with a sliding rod connecting piece 12, and the sliding rod connecting piece 12 is provided with a mounting hole.
The tail end of the sliding rod 7 of the LVDT displacement sensor 6 is provided with a limit baffle 13, the limit baffle 13 is provided with a stud 14, the stud 14 passes through the mounting hole, and the sliding rod 7 of the LVDT displacement sensor 6 is fixed by matching with a nut and the limit baffle 13.
The sliding block 5 is provided with a sliding column connecting piece 15, and the tail end of the sliding column 10 of the calibration sensor 9 is connected with the sliding column connecting piece 15.
The top of the linear slide rail 2 is provided with a clamping seat 11, and the LVDT displacement sensor 6 is arranged on the linear slide rail 2 through the clamping seat 11.
The servo motor 3 is arranged on the linear slide rail 2 through a motor seat 16, and one end of the ball screw 4 penetrates through the linear slide rail 2 and is connected with a motor shaft of the servo motor 3.
The utility model discloses a calibration device of an LVDT displacement sensor, wherein sensor calibration equipment calibrates displacement of an LVDT displacement sensor 6 through a conditioning acquisition unit; after calibration is completed, the sensor calibration equipment controls the servo motor 3 to rotate through a servo driver, so that the ball screw 4 can drive the sliding block 5 to slide in the linear sliding rail 2 to a calibrated displacement, and when the sliding block 5 slides, the sliding rod 7 of the LVDT displacement sensor 6 and the sliding column 10 of the calibration sensor 9 are respectively driven by the sliding rod connecting piece 12 and the sliding column connecting piece 15 to simultaneously stretch along with the sliding block 5; the sensor calibration equipment acquires the displacement of the LVDT displacement sensor 6 through the conditioning acquisition unit, acquires the displacement of the calibration sensor 9 through the communication module, and can acquire the calibration of the LVDT displacement sensor 6 through taking the difference.
The embodiments given above are preferred examples for realizing the present utility model, and the present utility model is not limited to the above-described embodiments. Any immaterial additions and substitutions made by those skilled in the art according to the technical features of the technical scheme of the utility model are all within the protection scope of the utility model.
Claims (5)
1. The LVDT displacement sensor calibration device is characterized by comprising a base (1) and a linear slide rail (2) arranged at the top of the base (1);
one end of the linear slide rail (2) is provided with a servo motor (3), the servo motor (3) is connected with sensor calibration equipment through a servo driver, a motor shaft of the servo motor (3) is provided with a multi-turn absolute value encoder, and the multi-turn absolute value encoder is connected with the servo driver;
a ball screw (4) is rotatably arranged on the linear slide rail (2), and one end of the ball screw (4) penetrates through the linear slide rail (2) to be connected with a motor shaft of the servo motor (3); a sliding block (5) in threaded connection with the ball screw (4) is sleeved on the ball screw, and the sliding block (5) is in sliding connection with the linear sliding rail (2);
the other end of the linear slide rail (2) is provided with an LVDT displacement sensor (6), and a sliding rod (7) of the LVDT displacement sensor (6) is connected with the sliding block (5); the LVDT displacement sensor (6) is connected with sensor calibration equipment through a conditioning acquisition unit;
a fixing frame (8) is arranged on one side of the linear sliding rail (2), a calibration sensor (9) is arranged on the fixing frame (8), and a sliding column (10) of the calibration sensor (9) is connected with the sliding block (5); the calibration sensor (9) is connected with the sensor calibration equipment through a communication module.
2. The LVDT displacement sensor calibration device according to claim 1, wherein the top of the linear slide rail (2) is provided with a clamping seat (11), and the LVDT displacement sensor (6) is mounted on the linear slide rail (2) through the clamping seat (11).
3. The LVDT displacement sensor calibration device according to claim 1, wherein the top of the slider (5) is provided with a sliding rod connector (12), and the sliding rod connector (12) is provided with a mounting hole;
the tail end of the sliding rod (7) of the LVDT displacement sensor (6) is provided with a limit baffle (13), the limit baffle (13) is provided with a stud (14), the stud (14) penetrates through the mounting hole, and the sliding rod (7) of the LVDT displacement sensor (6) is fixed by matching with a nut and the limit baffle (13).
4. The LVDT displacement sensor calibration device in accordance with claim 1, characterized in that the slider (5) is provided with a spool connector (15), and the end of the spool (10) of the calibration sensor (9) is connected to the spool connector (15).
5. The LVDT displacement sensor calibration device according to claim 1, wherein the servo motor (3) is mounted on the linear slide rail (2) through a motor base (16), and one end of the ball screw (4) penetrates through the linear slide rail (2) and is connected with a motor shaft of the servo motor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726927.4U CN220230418U (en) | 2023-07-04 | 2023-07-04 | LVDT displacement sensor calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726927.4U CN220230418U (en) | 2023-07-04 | 2023-07-04 | LVDT displacement sensor calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220230418U true CN220230418U (en) | 2023-12-22 |
Family
ID=89178358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321726927.4U Active CN220230418U (en) | 2023-07-04 | 2023-07-04 | LVDT displacement sensor calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220230418U (en) |
-
2023
- 2023-07-04 CN CN202321726927.4U patent/CN220230418U/en active Active
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