In-situ calibration device for eddy current displacement sensor

Abstract

The utility model discloses an eddy current displacement sensor in-situ calibration device, and relates to the technical field of sensor calibration, the eddy current displacement sensor in-situ calibration device comprises a sensor mounting plate and an in-situ calibration mechanism, the right end of the sensor mounting plate is provided with an eddy current displacement sensor, and the in-situ calibration mechanism is arranged above the sensor mounting plate. The position of the calibration measuring plate is measured through the infrared distance meter, so that the position of the calibration measuring plate is controlled to be changed, the precision of the distance between the calibration measuring plate and the eddy current displacement sensor is ensured, the output characteristics of the sensor at different positions are determined, and calibration of the eddy current displacement sensor is completed. Therefore, the distance between the calibration measuring plate and the eddy current displacement sensor is automatically adjusted and judged through the infrared distance meter, manual operation is not needed, meanwhile, multi-angle and multi-material measurement calibration can be carried out on the eddy current displacement sensor, and the overall calibration effect and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor calibration, in particular to an in-situ calibration device for an eddy current displacement sensor. Background Art

[0002] Eddy current displacement sensors are widely used in mechanical engineering, aerospace, precision instruments and other fields to measure parameters such as displacement, velocity and acceleration of objects; however, due to manufacturing tolerances, installation errors and possible performance drift in long-term use, the accuracy and reliability of the sensor may be affected; therefore, regular calibration is required to ensure the accuracy of its measurement results.

[0003] After searching, the patent number "CN218034866U" mentioned in the text that "the utility model discloses an in-situ calibration device of an eddy current displacement sensor in the field of eddy current sensor technology, including a base, a fixed plate and a workbench. The bottom of the workbench is connected with a lifting structure, a movable seat and a movable assembly, and the top is provided with a movable plate and a screw micrometer. The fixed plate is provided with a plug plate, and the plug plate is provided with a mounting groove." It calibrates and measures the eddy current displacement sensor by rotating the threaded micrometer to change the position of the movable plate, but the distance between the two needs to be manually adjusted during use, which is not only prone to operational errors, but also prone to certain errors in reading judgment. This not only increases the manual workload and cost, but also may cause the calibration result to be inconsistent with the actual working status due to manual errors.

[0004] To this end, we provide an in-situ calibration device for eddy current displacement sensors to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an in-situ calibration device for an eddy current displacement sensor to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an eddy current displacement sensor in-situ calibration device, comprising a sensor mounting plate and an in-situ calibration mechanism, wherein the eddy current displacement sensor is mounted on the right end of the sensor mounting plate, and the in-situ calibration mechanism is arranged above the sensor mounting plate;

[0007] The in-situ calibration mechanism includes a lateral adjustment component, a longitudinal adjustment component, a height adjustment component, an angle adjustment component, a calibration measurement component and a distance control component. A lateral adjustment component is arranged above the sensor mounting plate, a longitudinal adjustment component is arranged at the left end of the lateral adjustment component, a height adjustment component is installed at the top of the lateral adjustment component, an angle adjustment component is arranged at the top of the height adjustment component, a calibration measurement component is installed at the top of the angle adjustment component, and a distance control component is arranged on the right side of the upper end of the lateral adjustment component.

[0008] Preferably, the lateral adjustment assembly includes a calibration adjustment frame, a lateral drive, a lateral threaded rod and a calibration connecting platform. The calibration adjustment frame is placed on the upper side of the sensor mounting plate, the lateral drive is installed on the inner side of the calibration adjustment frame, the lateral drive is installed on the inner side of the lateral drive, and the top end of the lateral threaded rod is threadedly connected to the calibration connecting platform.

[0009] Preferably, the longitudinal adjustment assembly includes a longitudinal driver and a longitudinal threaded rod, the left end of the calibration adjustment frame is installed with the longitudinal driver, the inner side of the longitudinal driver is installed with a longitudinal threaded rod, and the longitudinal threaded rod is threadedly connected to the calibration connection platform.

[0010] Preferably, the height adjustment component includes an electric-controlled lifting platform, an auxiliary lifting rod and a lifting connection platform, the electric-controlled lifting platform is fixedly installed on the top of the calibration connection platform, auxiliary lifting rods are arranged around the electric-controlled lifting platform, and the lifting connection platform is connected to the lifting connection platform at the top slot of the electric-controlled lifting platform.

[0011] Preferably, the angle adjustment assembly comprises an electrically controlled rotating platform and a rotating connecting plate, the top screw of the lifting connecting platform is connected to the electrically controlled rotating platform, and the top slot of the electrically controlled rotating platform is connected to the rotating connecting plate.

[0012] Preferably, the calibration measurement assembly comprises a measurement plate mounting frame and a calibration measurement plate, the measurement plate mounting frame is welded to the top end of the rotating connection plate, and the calibration measurement plate is connected to the inner slot of the measurement plate mounting frame.

[0013] Preferably, the distance control component comprises a measuring mounting platform and an infrared rangefinder. The measuring mounting platform is arranged on the right side of the top end of the calibration adjustment frame, and the top card slot of the measuring mounting platform is connected to the infrared rangefinder.

[0014] Preferably, a positioning and fixing assembly is provided at the right end of the measuring mounting platform, and the positioning and fixing assembly includes a fixed clamping platform, a fixed knob and a fixed locking plate. A fixed clamping platform is welded at the right end of the measuring mounting platform, and the front and rear ends of the fixed clamping platform are both threadedly connected with a fixed knob, and a fixed locking plate is provided on the inner side of the fixed clamping platform.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the setting of the positioning and fixing components, the fixed card table is inserted into the bottom of the eddy current displacement sensor, and then the fixing knob is turned to fix the calibration adjustment frame through the fixed locking plate, thereby improving the stability of the calibration measurement of the eddy current displacement sensor. At the same time, the eddy current displacement sensor can be directly maintained and calibrated without disassembling it, thereby improving the convenience of eddy current displacement sensor calibration;

[0017] 2. Through the setting of the in-situ calibration mechanism, the transverse driver is started to rotate the transverse threaded rod through the motor, so that the calibration connection table moves laterally inside the calibration adjustment frame, and the height position of the calibration measurement plate is changed by driving the lifting connection table through the electric control lifting table, so as to adjust the calibration measurement plate according to the height of the eddy current displacement sensor, and the rotating connection plate is controlled to rotate by the electric control rotating table to change the angle between the calibration measurement plate and the eddy current displacement sensor, and then the eddy current displacement sensor device measurement calibration is started. At the same time, the material of the calibration measurement plate can be replaced to perform feedback calibration of different materials for the eddy current displacement sensor, and the longitudinal driver is started to rotate the longitudinal threaded rod through the motor, so that the calibration connection table is in the calibration The adjusting frame is longitudinally moved inside, thereby changing the distance between the calibration measuring plate and the eddy current displacement sensor and changing the measurement calibration position. At the same time, during the calibration measurement, the position of the calibration measuring plate is measured by the infrared rangefinder, so as to control the change of the position of the calibration measuring plate and ensure the accuracy of the distance between the calibration measuring plate and the eddy current displacement sensor. In this way, the output characteristics of the sensor at different positions are determined, and the calibration of the eddy current displacement sensor is completed. In this way, the distance between the calibration measuring plate and the eddy current displacement sensor is automatically adjusted and judged by the infrared rangefinder without manual operation. At the same time, the eddy current displacement sensor can be measured and calibrated at multiple angles and materials, thereby improving the overall calibration effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning and fixing component structure proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the matching structure of the lateral adjustment component and the longitudinal adjustment component proposed in the utility model;

[0021] Figure 4 This is a schematic diagram of the matching structure of the height adjustment component, the angle adjustment component and the calibration measurement component proposed in the utility model.

[0022] In the figure: 1. sensor mounting plate; 2. eddy current displacement sensor; 3. in-situ calibration mechanism; 31. lateral adjustment component; 311. calibration adjustment frame; 312. lateral drive; 313. lateral threaded rod; 314. calibration connection platform; 32. longitudinal adjustment component; 321. longitudinal drive; 322. longitudinal threaded rod; 33. height adjustment component; 331. electric lifting platform; 332. auxiliary lifting rod; 333. lifting connection platform; 34. angle adjustment component; 341. electric control rotating platform; 342. rotating connection plate; 35. calibration measurement component; 351. measuring plate mounting frame; 352. calibration measuring plate; 36. distance control component; 361. measuring mounting platform; 362. infrared rangefinder; 4. positioning and fixing component; 41. fixed card platform; 42. fixed knob; 43. fixed locking plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1-4 As shown, an eddy current displacement sensor in-situ calibration device comprises a sensor mounting plate 1 and an in-situ calibration mechanism 3, an eddy current displacement sensor 2 is mounted on the right end of the sensor mounting plate 1, and an in-situ calibration mechanism 3 is arranged above the sensor mounting plate 1;

[0026] The in-situ calibration mechanism 3 includes a lateral adjustment component 31, a longitudinal adjustment component 32, a height adjustment component 33, an angle adjustment component 34, a calibration measurement component 35 and a distance control component 36. The lateral adjustment component 31 is arranged above the sensor mounting plate 1, the longitudinal adjustment component 32 is arranged at the left end of the lateral adjustment component 31, the height adjustment component 33 is installed at the top of the lateral adjustment component 31, the angle adjustment component 34 is arranged at the top of the height adjustment component 33, the calibration measurement component 35 is installed at the top of the angle adjustment component 34, and the distance control component 36 is arranged on the right side of the upper end of the lateral adjustment component 31.

[0027] Furthermore, the lateral adjustment component 31 includes a calibration adjustment frame 311, a lateral driver 312, a lateral threaded rod 313 and a calibration connecting platform 314. The calibration adjustment frame 311 is placed on the upper side of the sensor mounting plate 1, and the lateral driver 312 is installed on the inner side of the calibration adjustment frame 311. The lateral driver 312 is installed on the inner side of the lateral driver 312. The lateral threaded rod 313 is installed on the inner side of the lateral driver 312. The top end of the lateral threaded rod 313 is threadedly connected to the calibration connecting platform 314. The lateral driver 312 is started to rotate the lateral threaded rod 313 through a motor, so that the calibration connecting platform 314 moves laterally inside the calibration adjustment frame 311, so as to facilitate the adjustment of the lateral position of the calibration measurement plate 352 according to the eddy current displacement sensor 2.

[0028] Furthermore, the longitudinal adjustment component 32 includes a longitudinal driver 321 and a longitudinal threaded rod 322. The longitudinal driver 321 is installed at the left end of the calibration adjustment frame 311, and the longitudinal threaded rod 322 is installed on the inner side of the longitudinal driver 321. The longitudinal threaded rod 322 is threadedly connected to the calibration connecting platform 314. When the longitudinal driver 321 is started, the longitudinal threaded rod 322 is rotated by the motor, so that the calibration connecting platform 314 moves longitudinally inside the calibration adjustment frame 311, thereby changing the distance between the calibration measurement plate 352 and the eddy current displacement sensor 2, and changing the measurement and calibration position.

[0029] Furthermore, the height adjustment component 33 includes an electrically controlled lifting platform 331, an auxiliary lifting rod 332 and a lifting connection platform 333. The electrically controlled lifting platform 331 is fixedly installed on the top of the calibration connection platform 314, and auxiliary lifting rods 332 are arranged around the electrically controlled lifting platform 331. The lifting connection platform 333 is connected to the top slot of the electrically controlled lifting platform 331. The lifting connection platform 333 is driven by the electrically controlled lifting platform 331 to change the height position of the calibration measurement plate 352, so that the calibration measurement plate 352 can be adjusted according to the height of the eddy current displacement sensor 2 to ensure the accuracy of the calibration.

[0030] Furthermore, the angle adjustment assembly 34 includes an electrically controlled rotating table 341 and a rotating connecting disk 342. The top screw of the lifting connecting table 333 is connected to the electrically controlled rotating table 341, and the top slot of the electrically controlled rotating table 341 is connected to the rotating connecting disk 342. The rotating connecting disk 342 is controlled to rotate by the electrically controlled rotating table 341 to change the angle between the calibration measurement plate 352 and the eddy current displacement sensor 2, thereby increasing the comprehensiveness of the calibration measurement.

[0031] Furthermore, the calibration measurement assembly 35 includes a measuring plate mounting frame 351 and a calibration measurement plate 352. The measuring plate mounting frame 351 is welded to the top of the rotating connecting disk 342, and the calibration measurement plate 352 is connected to the inner slot of the measuring plate mounting frame 351. The calibration measurement plate 352 is placed in the measuring plate mounting frame 351, and then the eddy current displacement sensor 2 is started for measurement to determine the output characteristics of the sensor at different positions, thereby adjusting the eddy current displacement sensor 2 and completing the calibration of the eddy current displacement sensor 2. At the same time, the material of the calibration measurement plate 352 can be replaced to perform feedback calibration of the eddy current displacement sensor 2 with different materials.

[0032] Furthermore, the distance control component 36 includes a measuring mounting platform 361 and an infrared rangefinder 362. The measuring mounting platform 361 is arranged on the right side of the top of the calibration adjustment frame 311, and the top card slot of the measuring mounting platform 361 is connected to the infrared rangefinder 362. During the calibration measurement, the position of the calibration measurement plate 352 is measured by the infrared rangefinder 362 to ensure the accuracy of the distance between the calibration measurement plate 352 and the eddy current displacement sensor 2, thereby improving the measurement and calibration effect.

[0033] Embodiment 2

[0034] See also Figure 1 and Figure 2 As shown, compared with Example 1, as another implementation of the utility model, a positioning and fixing component 4 is provided at the right end of the measuring mounting platform 361, and the positioning and fixing component 4 includes a fixed clamping platform 41, a fixed knob 42 and a fixed locking plate 43. The right end of the measuring mounting platform 361 is welded with a fixed clamping platform 41, and the front and rear ends of the fixed clamping platform 41 are both threadedly connected with the fixing knob 42, and the inner side of the fixed clamping platform 41 is provided with a fixed locking plate 43. The fixed clamping platform 41 is clamped into the bottom end of the eddy current displacement sensor 2 and then the fixing knob 42 is rotated to fix the calibration adjustment frame 311 through the fixed locking plate 43, thereby improving the stability of the calibration measurement of the eddy current displacement sensor 2. At the same time, the eddy current displacement sensor 2 can be directly maintained and calibrated without disassembling it, thereby improving the convenience of calibrating the eddy current displacement sensor 2.

[0035] Working principle: When in use, the first step is to move the device to the desired location, then insert the fixed card platform 41 into the bottom end of the eddy current displacement sensor 2, and then turn the fixing knob 42 to fix the calibration adjustment frame 311 through the fixed locking plate 43. The second step is to start the transverse driver 312 to rotate the transverse threaded rod 313 through the motor, so that the calibration connecting platform 314 moves laterally inside the calibration adjustment frame 311, so as to facilitate the adjustment of the transverse position of the calibration measurement plate 352 according to the eddy current displacement sensor 2. The height position of the calibration measurement plate 352 is changed by driving the lifting connecting platform 333 through the electrically controlled lifting platform 331, so as to facilitate the adjustment of the calibration measurement plate 352 according to the height of the eddy current displacement sensor 2. The third step is to control the rotation connection disk 342 to rotate through the electrically controlled rotating platform 341 to change the calibration measurement plate 352 and the eddy current displacement sensor. The angle between the sensor 2 is determined, and then the eddy current displacement sensor 2 is started for measurement and calibration. At the same time, the material of the calibration measurement plate 352 can be replaced to perform feedback calibration of the eddy current displacement sensor 2 with different materials. In the fourth step, the longitudinal driver 321 is started to rotate the longitudinal threaded rod 322 through the motor, so that the calibration connection platform 314 moves longitudinally inside the calibration adjustment frame 311, thereby changing the distance between the calibration measurement plate 352 and the eddy current displacement sensor 2, and changing the measurement and calibration position. At the same time, during the calibration measurement, the position of the calibration measurement plate 352 is measured by the infrared rangefinder 362 to ensure the accuracy of the distance between the calibration measurement plate 352 and the eddy current displacement sensor 2, so as to determine the output characteristics of the sensor at different positions, and complete the calibration of the eddy current displacement sensor 2, thus completing the use of an eddy current displacement sensor in-situ calibration device.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eddy current displacement sensor in-situ calibration device, comprising a sensor mounting plate (1) and an in-situ calibration mechanism (3), characterized in that: An eddy current displacement sensor (2) is installed at the right end of the sensor mounting plate (1), and an in-situ calibration mechanism (3) is arranged above the sensor mounting plate (1); The in-situ calibration mechanism (3) comprises a transverse adjustment component (31), a longitudinal adjustment component (32), a height adjustment component (33), an angle adjustment component (34), a calibration measurement component (35) and a distance control component (36); the transverse adjustment component (31) is arranged above the sensor mounting plate (1); the longitudinal adjustment component (32) is arranged at the left end of the transverse adjustment component (31); the height adjustment component (33) is installed at the top of the transverse adjustment component (31); the angle adjustment component (34) is arranged at the top of the height adjustment component (33); the calibration measurement component (35) is installed at the top of the angle adjustment component (34); and the distance control component (36) is arranged on the right side of the upper end of the transverse adjustment component (31).

2. The in-situ calibration device of an eddy current displacement sensor according to claim 1, characterized in that: The transverse adjustment assembly (31) comprises a calibration adjustment frame (311), a transverse driver (312), a transverse threaded rod (313) and a calibration connection platform (314); the calibration adjustment frame (311) is placed on the upper side of the sensor mounting plate (1); the transverse driver (312) is installed on the inner side of the calibration adjustment frame (311); the transverse threaded rod (313) is installed on the inner side of the transverse driver (312); and the top end of the transverse threaded rod (313) is threadedly connected to the calibration connection platform (314).

3. The in-situ calibration device of an eddy current displacement sensor according to claim 2, characterized in that: The longitudinal adjustment assembly (32) comprises a longitudinal driver (321) and a longitudinal threaded rod (322); the longitudinal driver (321) is installed at the left end of the calibration adjustment frame (311); the longitudinal threaded rod (322) is installed on the inner side of the longitudinal driver (321); and the longitudinal threaded rod (322) is threadedly connected to the calibration connection platform (314).

4. The in-situ calibration device of an eddy current displacement sensor according to claim 2, characterized in that: The height adjustment component (33) comprises an electric-controlled lifting platform (331), an auxiliary lifting rod (332) and a lifting connection platform (333); the electric-controlled lifting platform (331) is fixedly mounted on the top of the calibration connection platform (314); auxiliary lifting rods (332) are arranged around the electric-controlled lifting platform (331); and the lifting connection platform (333) is connected to a slot at the top of the electric-controlled lifting platform (331).

5. The in-situ calibration device of an eddy current displacement sensor according to claim 4, characterized in that: The angle adjustment assembly (34) comprises an electrically controlled rotating platform (341) and a rotating connecting disk (342); the top end screw of the lifting connecting platform (333) is connected to the electrically controlled rotating platform (341); the top end slot of the electrically controlled rotating platform (341) is connected to the rotating connecting disk (342).

6. The in-situ calibration device for eddy current displacement sensor according to claim 5, characterized in that: The calibration measurement assembly (35) comprises a measurement plate mounting frame (351) and a calibration measurement plate (352); the top end of the rotating connection plate (342) is welded with the measurement plate mounting frame (351); and the inner slot of the measurement plate mounting frame (351) is connected with the calibration measurement plate (352).

7. The in-situ calibration device for eddy current displacement sensor according to claim 2, characterized in that: The distance control component (36) comprises a measuring mounting platform (361) and an infrared rangefinder (362); the measuring mounting platform (361) is arranged on the right side of the top end of the calibration adjustment frame (311); and the infrared rangefinder (362) is connected to the top slot of the measuring mounting platform (361).

8. The in-situ calibration device for eddy current displacement sensor according to claim 7, characterized in that: A positioning and fixing assembly (4) is provided at the right end of the measuring mounting platform (361), and the positioning and fixing assembly (4) comprises a fixed clamping platform (41), a fixed knob (42) and a fixed locking plate (43). The right end of the measuring mounting platform (361) is welded with a fixed clamping platform (41), and the front and rear ends of the fixed clamping platform (41) are both threadedly connected with the fixed knob (42), and the inner side of the fixed clamping platform (41) is provided with a fixed locking plate (43).

Images