Multifunctional flexible sensor calibration device

Abstract

The utility model discloses a multifunctional flexible sensor calibration device, which belongs to the technical field of calibration devices and comprises a platform base, a lifting mechanism is arranged on the platform base, a standard sensor is arranged at the lifting end of the lifting mechanism, and a sliding rail is fixedly connected onto the platform base. The tension calibration assembly comprises two clamps, the two clamps are detachably connected with the top of the sliding rail and the bottom of the standard sensor respectively, the clamping ends of the two clamps are oppositely arranged, and the two clamps are used for clamping the two sides of the to-be-calibrated flexible sensor respectively; and the pressure calibration assembly comprises a pressure plate and a pressure table, the top of the pressure plate is detachably connected with the bottom of the standard sensor, the bottom of the pressure table is slidably connected with the sliding rail, and the to-be-calibrated flexible sensor is pressed between the pressure plate and the pressure table. According to the utility model, the conversion between a tension calibration structure and a pressure calibration structure can be rapidly realized, so that the tension and pressure calibration can be performed on the to-be-calibrated flexible sensor, the operation is simple, and the device integration degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration devices, in particular to a multifunctional flexible sensor calibration device. Background Technique

[0002] A flexible sensor is a sensor with a soft material and high sensitivity, and has broad application prospects in the fields of medical treatment, health monitoring, robotics, intelligent wearable devices, etc. Sensor calibration is to apply a known force to the sensor within a certain range, record the output value of the sensor, and analyze and process the output value, so as to determine parameters such as the linearity and sensitivity of the sensor. However, the existing flexible sensor calibration devices on the market have problems such as cumbersome calibration operations, low device integration, and low adaptability.

[0003] Therefore, a multifunctional flexible sensor calibration device is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multifunctional flexible sensor calibration device, aiming to solve or improve at least one of the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following scheme: The utility model provides a multifunctional flexible sensor calibration device, including:

[0006] A platform base, on which a lifting mechanism is arranged, a standard sensor is arranged at the lifting end of the lifting mechanism, and a slide rail is fixedly connected to the platform base;

[0007] A tensile force calibration component, which includes two clamps, the two clamps are respectively detachably connected to the top of the slide rail and the bottom of the standard sensor, the clamping ends of the two clamps are arranged oppositely, and the two clamps are respectively used for clamping both sides of the flexible sensor to be calibrated;

[0008] A pressure calibration component, which includes a pressure plate and a pressure table, the top of the pressure plate is detachably connected to the bottom of the standard sensor, the bottom of the pressure table is slidably connected to the slide rail, and the flexible sensor to be calibrated is pressed between the pressure plate and the pressure table.

[0009] Preferably, the lifting mechanism includes a displacement base fixedly connected to the platform base, a T-shaped chute is opened along the height direction on one side of the displacement base, a T-shaped slider is slidably connected in the T-shaped chute, the T-shaped slider extends out of the T-shaped chute and is fixedly connected with a sliding cover, the bottom of the sliding cover is threadedly connected to the standard sensor, the sliding cover is in sliding contact with the side wall of the displacement base, and a driving component for drivingly connecting with the T-shaped slider is arranged on the displacement base.

[0010] Preferably, a first groove is formed on one side of the T-shaped chute. The driving assembly includes a rotating rod rotatably connected to the side wall of the displacement base. One end of the rotating rod extends into the first groove and is fixedly connected with a gear. A plurality of tooth grooves are formed on one side of the T-shaped slider close to the gear along the height direction. The gear meshes with the tooth grooves. An adjusting handle is fixedly connected to the end of the rotating rod away from the gear. A locking assembly detachably connected to the T-shaped slider is arranged on the displacement base.

[0011] Preferably, a second groove is formed on the side wall of the T-shaped chute. The locking assembly includes a positioning block slidably connected to the second groove. A first screw rod is threadedly connected to the side wall of the displacement base. One end of the first screw rod extends into the second groove and is rotatably connected with the positioning block.

[0012] Preferably, the fixture is a jaw fixture. A clamping jaw is formed between two opposite clamping plates of the jaw fixture. Bolts penetrate through the two clamping plates. Locking screws are threadedly connected to the bolts. The two clamping plates of the jaw fixture are clamped between the locking screws and the nuts of the bolts.

[0013] Preferably, a first threaded post is fixedly connected to one end of the jaw fixture away from the clamping jaw. Threaded grooves are respectively formed at the top of the slide rail and the bottom of the standard sensor. The first threaded post is threadedly connected to the threaded groove. A second threaded post is fixedly connected to the top of the pressure plate. The second threaded post is threadedly connected to the threaded groove.

[0014] Preferably, an angle calibration assembly is further arranged on the platform base. The angle calibration assembly includes a fixed-end hinge fixedly connected to the platform base. The top of the fixed-end hinge is rotatably connected to a rotating-end hinge through a rotating shaft. A rotating base is fixedly connected to the platform base. A second screw rod is threadedly connected to the rotating base. The second screw rod is in transmission connection with the rotating-end hinge.

[0015] Preferably, a rectangular groove is formed at one end of the second screw rod close to the rotating-end hinge. A rectangular rod is slidably connected in the rectangular groove. The rectangular rod extends out of the rectangular groove and is fixedly connected with a rotating disk. The disk surface of the rotating disk is fixedly connected to the rotating-end hinge through a connecting rod. The rotating disk is coaxially arranged with the rotating shaft.

[0016] The present utility model discloses the following technical effects:

[0017] When calibrating the tensile force of the flexible sensor, the two fixtures are respectively connected to the slide rail and the standard sensor. The flexible sensor to be calibrated is clamped between the two fixtures. The standard sensor is driven to rise by the lifting assembly to apply tensile force. The output values of the standard sensor and the flexible sensor to be calibrated are recorded to construct a calibration curve of the flexible sensor under different tensile force states.

[0018] When calibrating the pressure of the flexible sensor, remove the two jigs, connect the pressure plate to the standard sensor, slide the pressure table to the bottom of the pressure plate, place the flexible sensor to be calibrated on the pressure table, drive the pressure plate to descend by the lifting component to press the flexible sensor to be calibrated, and record the output values of the standard sensor and the flexible sensor to be calibrated to construct the calibration curve of the flexible sensor under different pressure states;

[0019] This device can quickly realize the conversion between the tensile calibration structure and the pressure calibration structure, so that the tensile and pressure calibrations of the flexible sensor to be calibrated can be carried out. The operation is simple and the integration degree of the device is high. Description of the Drawings

[0020] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0021] Figure 1 is a schematic structural diagram when the utility model performs tensile calibration;

[0022] Figure 2 is a schematic structural diagram when the utility model performs pressure calibration;

[0023] Figure 3 is a schematic structural diagram of the driving component in the utility model;

[0024] Figure 4 is a schematic structural diagram of the second screw rod, rectangular rod and rectangular groove in the utility model;

[0025] Figure 5 is a schematic structural diagram of the pressure plate in the utility model.

[0026] In the figure: 1. Platform base; 2. Slide rail; 3. Bolt; 4. Jaw jig; 5. Slide table; 6. Pressure table; 7. Standard sensor; 8. Slide cover; 9. Adjusting handle; 10. First screw rod; 11. Displacement base; 12. Vertical connecting piece; 13. Fixed-end hinge; 14. Rotating-end hinge; 15. Rotating disk; 16. Rotating base; 17. Second screw rod; 18. Pressure plate; 19. T-shaped chute; 20. T-shaped slider; 21. First groove; 22. Rotating rod; 23. Gear; 24. Second groove; 25. Positioning block; 26. Rectangular rod; 27. Second threaded column; 28. Rectangular groove. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Referring to Figures 1 - 5 , the present utility model provides a calibration device for a multi-functional flexible sensor, including:

[0030] A platform base 1, on which a lifting mechanism is provided, a standard sensor 7 is provided at the lifting end of the lifting mechanism, and a slide rail 2 is fixedly connected to the platform base 1; the standard sensor 7 is an S-type force sensor;

[0031] A tensile calibration assembly, which includes two clamps, the two clamps are respectively detachably connected to the top of the slide rail 2 and the bottom of the standard sensor 7, the clamping ends of the two clamps are arranged oppositely, and the two clamps are respectively used to clamp both sides of the flexible sensor to be calibrated;

[0032] A pressure calibration assembly, which includes a pressure plate 18 and a pressure table 6, the top of the pressure plate 18 is detachably connected to the bottom of the standard sensor 7, the bottom of the pressure table 6 is slidably connected to the slide rail 2, and the flexible sensor to be calibrated is pressed between the pressure plate 18 and the pressure table 6; a slide table 5 is fixedly connected to the bottom of the pressure table 6, and the slide table 5 is slidably connected to the slide rail 2;

[0033] When performing tensile calibration on the flexible sensor, connect the two clamps to the slide rail 2 and the standard sensor 7 respectively, clamp the flexible sensor to be calibrated between the two clamps, drive the standard sensor 7 to rise through the lifting assembly to apply tensile force, and record the output values of the standard sensor 7 and the flexible sensor to be calibrated, so as to construct a calibration curve of the flexible sensor under different tensile states;

[0034] When performing pressure calibration on the flexible sensor, remove the two clamps, connect the pressure plate 18 to the bottom of the standard sensor 7, slide the pressure table 6 to the bottom of the pressure plate 18, place the flexible sensor to be calibrated on the pressure table 6, drive the pressure plate 18 to descend through the lifting assembly to press the flexible sensor to be calibrated, and apply pressure, and record the output values of the standard sensor 7 and the flexible sensor to be calibrated, so as to construct a calibration curve of the flexible sensor under different pressure states.

[0035] A further optimized solution is provided, in which the lifting mechanism includes a displacement base 11 fixedly connected to the platform base 1, a T-shaped slide groove 19 is provided on one side of the displacement base 11 along the height direction, a T-shaped slider 20 is slidably connected in the T-shaped slide groove 19, the T-shaped slider 20 extends out of the T-shaped slide groove 19 and is fixedly connected to a slide cover 8, the bottom of the slide cover 8 is threadedly connected to the standard sensor 7, the slide cover 8 is in sliding contact with the side wall of the displacement base 11, and a driving component is provided on the displacement base 11 that is transmission-connected to the T-shaped slider 20.

[0036] A further optimized solution is provided with a first groove 21 on one side of the T-shaped slide groove 19, and the driving assembly includes a rotating rod 22 rotatably connected to the side wall of the displacement base 11, one end of the rotating rod 22 extends into the first groove 21 and is fixedly connected to a gear 23, and a plurality of tooth grooves are provided on the side of the T-shaped slider 20 close to the gear 23 along the height direction, and the gear 23 is meshed with the tooth grooves, and an adjusting handle 9 is fixedly connected to the end of the rotating rod 22 away from the gear 23, and a locking assembly detachably connected to the T-shaped slider 20 is provided on the displacement base 11.

[0037] When the height of the standard sensor 7 is adjusted, the handle 9 is adjusted to rotate the rotating rod 22, which drives the gear 23 to rotate. The gear 23 engages with the tooth groove to drive the T-shaped slider 20 to rise and fall, thereby realizing the lifting and lowering of the standard sensor 7 on the sliding cover 8, thereby facilitating the application of tension or pressure.

[0038] A further optimized solution is provided in which a second groove 24 is provided on the side wall of the T-shaped slide groove 19, and the locking assembly includes a positioning block 25 which is slidably connected to the second groove 24; a first screw 10 is threadedly connected to the side wall of the displacement base 11, and one end of the first screw 10 extends into the second groove 24 and is rotatably connected to the positioning block 25; a handle is connected to the first screw 10, and when the standard sensor 7 is adjusted to a suitable height, the first screw 10 is rotated to drive the positioning block 25 to press the T-shaped slide block 20 to achieve locking positioning.

[0039] A further optimization scheme is provided in which the clamp is a jaw clamp 4, and a clamping jaw is formed between two oppositely arranged plates of the jaw clamp 4, a bolt 3 passes through the two plates, a locking screw (not shown in the figure) is threadedly connected to the bolt 3, and the two plates of the jaw clamp 4 are clamped between the locking screw and the nut of the bolt 3; by tightening the locking screw, the clamping jaw clamps the flexible sensor to be calibrated. When the flexible sensor to be calibrated needs to be removed, the locking screw is loosened to loosen the clamping jaw of the jaw clamp 4, and the flexible sensor to be calibrated can be taken out.

[0040] To further optimize the solution, a first threaded column is fixedly connected to one end of the jaw clamp 4 away from the clamping jaws, and threaded grooves are respectively provided on the top of the slide rail 2 and the bottom of the standard sensor 7, and the first threaded column is threadedly connected to the threaded groove; a second threaded column 27 is fixedly connected to the top of the pressure plate 18, and the second threaded column 27 is threadedly connected to the threaded groove.

[0041] For a further optimized solution, an angle calibration component is also provided on the platform base 1. The angle calibration component includes a fixed-end hinge 13 fixedly connected to the platform base 1. The top of the fixed-end hinge 13 is rotationally connected to a rotating-end hinge 14 through a rotating shaft. A rotating base 16 is fixedly connected to the platform base 1. A second screw rod 17 is threadedly connected to the rotating base 16. The second screw rod 17 is in transmission connection with the rotating-end hinge 14. The fixed-end hinge 13 is fixedly connected to the platform base 1 through a vertical connecting member 12.

[0042] For a further optimized solution, a rectangular groove 28 is provided at one end of the second screw rod 17 close to the rotating-end hinge 14. A rectangular rod 26 is slidably connected in the rectangular groove 28. The rectangular rod 26 extends out of the rectangular groove 28 and is fixedly connected to a rotating disk 15. The disk surface of the rotating disk 15 is fixedly connected to the rotating-end hinge 14 through a connecting rod. The rotating disk 15 is coaxially arranged with the rotating shaft. Angle graduation lines (not shown in the figure) are provided on the rotating base 16. A pointer pointing to the angle graduation lines is fixedly connected to the rotating disk 15. The rotation angle is recorded by observing the pointing value of the pointer.

[0043] When calibrating the tensile force of the flexible sensor, the two jaw clamps 4 are respectively threadedly connected to the slide rail 2 and the standard sensor 7. The flexible sensor to be calibrated is placed at the jaws of the jaw clamps 4. The locking screws are tightened to clamp the two ends of the calibrated flexible sensor by the two jaw clamps 4. Rotate the first screw rod 10 to drive the positioning block 25 away from the T-shaped slider 20 to release the limit. Rotate the rotating rod 22 by adjusting the handle 9, so that the sliding cover 8 is raised to apply a tensile force. After raising to the specified position, lock the position by rotating the first screw rod 10 to ensure the stability of the output value. Record the output values of the standard sensor 7 and the flexible sensor to be calibrated to construct a calibration curve of the flexible sensor under different tensile force states.

[0044] When calibrating the pressure of the flexible sensor, remove the two jaw clamps 4. Connect the pressure plate 18 to the standard sensor 7. Slide the pressure table 6 to the bottom of the pressure plate 18. Place the flexible sensor to be calibrated on the pressure table 6. Rotate the rotating rod 22 by adjusting the handle 9 to drive the pressure plate 18 to descend to press the flexible sensor to be calibrated and apply a pressure. When the specified pressure value is applied, lock the position of the standard sensor 7 by rotating the first screw rod 10. Record the output values of the standard sensor 7 and the flexible sensor to be calibrated to construct a calibration curve of the flexible sensor under different pressure states.

[0045] When calibrating the angle of the flexible sensor, paste both ends of the flexible sensor to be calibrated on the fixed-end hinge 13 and the rotating-end hinge 14 respectively. Rotate the second screw rod 17 to drive the rectangular rod 26 to rotate synchronously. At the same time, the rectangular rod 26 slides relative to the rectangular groove 28. The rotation of the rectangular rod 26 drives the rotating disc 15 to rotate, thereby driving the rotating-end hinge 14 to rotate. Record the rotation angle and the output value of the flexible sensor to be calibrated to construct a calibration curve of the flexible sensor at different rotation angles.

[0046] In this application, by applying different tensile forces, compressive forces and rotating different angles, the flexible sensor outputs different values. Then, according to the recorded data points, using appropriate algorithms or curve fitting techniques, a calibration curve of the sensor is established.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0048] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A multifunctional flexible sensor calibration device, characterized in that Including: A platform base (1), on which a lifting mechanism is provided, the lifting end of the lifting mechanism is provided with a standard sensor (7), and a slide rail (2) is fixedly connected to the platform base (1); A tensile calibration component, which includes two clamps, the two clamps are respectively detachably connected to the top of the slide rail (2) and the bottom of the standard sensor (7), the clamping ends of the two clamps are arranged oppositely, and the two clamps are respectively used for clamping both sides of the flexible sensor to be calibrated; A pressure calibration component, which includes a pressure plate (18) and a pressure table (6), the top of the pressure plate (18) is detachably connected to the bottom of the standard sensor (7), the bottom of the pressure table (6) is slidably connected to the slide rail (2), and the flexible sensor to be calibrated is pressed between the pressure plate (18) and the pressure table (6).

2. The multifunctional flexible sensor calibration device according to claim 1, wherein: The lifting mechanism includes a displacement base (11) fixedly connected to the platform base (1), a T-shaped chute (19) is opened in one side of the displacement base (11) along the height direction, a T-shaped slider (20) is slidably connected in the T-shaped chute (19), the T-shaped slider (20) extends out of the T-shaped chute (19) and is fixedly connected with a sliding cover (8), the bottom of the sliding cover (8) is threadedly connected with the standard sensor (7), the sliding cover (8) is in sliding contact with the side wall of the displacement base (11), and a driving component is arranged on the displacement base (11) and is in transmission connection with the T-shaped slider (20).

3. The multifunctional flexible sensor calibration device according to claim 2, wherein: A first groove (21) is opened on one side of the T-shaped chute (19), the driving component includes a rotating rod (22) rotatably connected to the side wall of the displacement base (11), one end of the rotating rod (22) extends into the first groove (21) and is fixedly connected with a gear (23), a plurality of tooth grooves are opened in the side of the T-shaped slider (20) close to the gear (23) along the height direction, the gear (23) is meshed with the tooth grooves, an adjusting handle (9) is fixedly connected to the end of the rotating rod (22) far away from the gear (23), and a locking component is arranged on the displacement base (11) and is detachably connected with the T-shaped slider (20).

4. The multifunctional flexible sensor calibration device according to claim 3, wherein: A second groove (24) is opened on the side wall of the T-shaped chute (19), the locking component includes a positioning block (25) slidably connected to the second groove (24), a first screw rod (10) is threadedly connected to the side wall of the displacement base (11), and one end of the first screw rod (10) extends into the second groove (24) and is rotatably connected with the positioning block (25).

5. The multi-functional flexible sensor calibration device according to claim 1, characterized in that: The clamp is a jaw clamp (4), a clamping jaw is formed between the two clamping plates arranged oppositely on the jaw clamp (4), a bolt (3) penetrates through the two clamping plates, a locking screw is threadedly connected to the bolt (3), and the two clamping plates of the jaw clamp (4) are clamped between the locking screw and the nut of the bolt (3).

6. The multifunctional flexible sensor calibration device according to claim 5, characterized in that: One end of the jaw clamp (4) away from the clamping jaw is fixedly connected with a first threaded column. Threaded grooves are respectively formed at the top of the slide rail (2) and the bottom of the standard sensor (7). The first threaded column is in threaded connection with the threaded groove. A second threaded column (27) is fixedly connected to the top of the pressure plate (18). The second threaded column (27) is in threaded connection with the threaded groove.

7. The multifunctional flexible sensor calibration device according to claim 1, wherein: An angle calibration component is further arranged on the platform base (1). The angle calibration component includes a fixed-end hinge (13) fixedly connected to the platform base (1). The top of the fixed-end hinge (13) is rotationally connected with a rotating-end hinge (14) through a rotating shaft. A rotating base (16) is fixedly connected to the platform base (1). A second screw rod (17) is in threaded connection with the rotating base (16). The second screw rod (17) is in transmission connection with the rotating-end hinge (14).

8. The calibration device for the multifunctional flexible sensor according to claim 7, characterized in that: A rectangular groove (28) is formed at one end of the second screw rod (17) close to the rotating-end hinge (14). A rectangular rod (26) is slidably connected in the rectangular groove (28). The rectangular rod (26) extends out of the rectangular groove (28) and is fixedly connected with a rotating disc (15). The disc surface of the rotating disc (15) is fixedly connected with the rotating-end hinge (14) through a connecting rod. The rotating disc (15) is coaxially arranged with the rotating shaft.

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