Capacitive angle sensor testing device

Abstract

The utility model discloses a capacitive angle sensor and a testing device thereof, and relates to the technical field of angle sensors. Comprising a fixed polar plate, a movable polar plate, a fixed plate, a connecting block, a hanging rod, a transverse shaft, a gasket, a nut, a support, a bearing, a two-dimensional displacement table, a Z-axis lifting table, a base, a vertical plate, a hook-shaped support, a fine tuning screw, a spring seat, a compression spring, a top head and the like. The change of the two-dimensional angle is calculated according to the change of the relative positions of the two plates, and the testing device can conveniently change the position of the movable polar plate through the fine tuning screw and the high-precision displacement table, so that the capacitive angle sensor can be calibrated at different angle positions. The device has the characteristics of small occupied space, convenience in installation and testing and the like; the capacitive angle sensor can directly measure the change of a spatial two-dimensional angle, is low in manufacturing cost and light in weight, and can be used for occasions with strict requirements on weight and space.

Description

TECHNICAL FIELD

[0001] The utility model relates to angle sensor technical field, especially a kind of capacitive angle sensor testing device. BACKGROUND

[0002] Angle sensor is a very important sensor, widely used in various trades and professions;It can accurately measure the rotation angle or position of object, help system realize accurate control and feedback;When selecting angle sensor, many factors need to be considered to ensure that the needs of practical application are met;Angle sensor is generally installed on shaft, rotor rotates with shaft, can real-time feedback rotation speed and angle position information etc.;With high precision, real-time, anti-interference ability, low power consumption and other characteristics. SUMMARY

[0003] The utility model discloses a kind of capacitive angle sensor testing devices, capacitive angle sensor is mainly composed of fixed pole plate, movable pole plate and wire etc., fixed pole plate and movable pole plate are made of non-metal material, metal sensing layer is electroplated on respective spherical surface, the metal sensing layer of fixed pole plate is divided into four quadrants and is insulated between each other;When the metal sensing layer of fixed pole plate and movable pole plate is close, will generate induction capacitance, with the change of movable pole plate relative to fixed pole plate angle position, the induction capacitance generated changes, there is certain function between the two, according to the change of induction capacitance, the change of movable pole plate relative to fixed pole plate angle can be calculated.

[0004] Testing device main function is to complete the test and calibration of angle, fixed pole plate is fixed on two-dimensional displacement table and Z-axis lifting platform, the position of fixed pole plate can be fine-tuned on two-dimensional displacement table and Z-axis lifting platform, movable pole plate is fixed on hanger through connecting block, and movable pole plate can rotate around horizontal axis center line, and movable pole plate is caused to move around horizontal axis by driving connecting block through rotating fine-tuning screw, and then the position of movable pole plate relative to fixed pole plate changes relatively.

[0005] The utility model discloses a kind of capacitive angle sensor testing devices, mainly has fixed pole plate, movable pole plate, fixed plate, connecting block, hanger, horizontal axis, gasket, nut, support, bearing, two-dimensional displacement table, Z-axis lifting platform, base, vertical plate, hook-shaped support, fine-tuning screw, spring seat, spring, top head composition.

[0006] Preferably, the base is a square flat structure and has a mounting hole on the upper surface, the Z-axis lifting platform is fixed on the upper surface of the base at the middle position, two supports are fixed on the upper surface of the base, two vertical plates are fixed on the side surface of the base, and the two-dimensional displacement table is fixed on the upper surface of the Z-axis lifting platform.

[0007] Preferably, the fixed electrode plate is a cylindrical structure, one end of which is provided with a concave spherical surface, and the surface of the concave spherical surface is plated with a metal sensing layer, the metal sensing layer is divided into four equal areas, and the areas are insulated from each other, each area is provided with a 90° counterbore, and the inclined surface of the counterbore is used for welding a wire, the other end of the fixed electrode plate is a flat surface, the flat surface is in contact with the upper surface of the fixed plate, and the outer circumference of the fixed electrode plate is uniformly provided with eight circular mounting holes, and the fixed electrode plate is mounted on the fixed plate by screws, and the fixed plate is mounted on the two-dimensional displacement table.

[0008] Preferably, the moving electrode plate is a cylindrical structure, one end of which is a convex spherical surface and the surface of which is plated with a metal sensing layer, and the other end has a rectangular boss, the boss is provided with two mounting holes, the connecting block and the fixed electrode plate are fixed together through the two mounting holes, the upper end of the connecting block is provided with a threaded hole, the lower end of the hanging rod is mounted in the threaded hole at the upper end of the connecting block, the upper end of the hanging rod is processed with external threads and fixed through the hole in the center part of the horizontal shaft with a washer and a nut; the moving electrode plate can swing around the central axis of the horizontal shaft through the hanging rod.

[0009] Preferably, the two ends of the horizontal shaft are installed in the holes in the upper parts of the left and right two supports through two bearings, and the two supports are fixed on the upper surface of the base.

[0010] Preferably, the upper end of the right vertical plate is provided with a hook-shaped support, and the hook-shaped support is in the shape of a hook; the right end of the hook-shaped support is fixed on the vertical plate through a screw, the left end of the hook-shaped support is provided with a fine thread hole, a fine adjustment screw is installed in the fine thread hole, and the fine adjustment screw can be rotated to produce micro-motion along the axis, similarly, the upper end of the left vertical plate is provided with a hook-shaped support, one end of the hook-shaped support is fixed on the left vertical plate through a screw, and the fine thread hole at the other end of the hook-shaped support is provided with a spring seat; the outer side of the spring seat is provided with a hexagonal structure, the outer right part is provided with a fine thread, and a blind hole is arranged, a compression spring and a top head are arranged in the inner hole of the spring seat, the front end of the top head is in the shape of a cone and is in contact with the connecting block, the top head can be extended and retracted in the spring seat under the action of the spring, and the top head and the fine adjustment screw are respectively in contact with the two sides of the connecting block and press the connecting block through the compression spring.

[0011] Specifically, during testing, the fixed electrode plate and the moving electrode plate are fixed, the gap between the spherical surfaces of the fixed electrode plate and the moving electrode plate is about 0.2-0.3 mm by adjusting the Z-axis lifting table, and the center points of the spherical surfaces of the fixed electrode plate and the moving electrode plate are on an axis by adjusting the two-dimensional displacement table, so that an induced capacitance is generated. Rotating the fine adjustment screw changes the position of the moving electrode plate, thereby causing the capacitance between the fixed electrode plate and the moving electrode plate to change, and the change value of the angle can be calculated according to the change value of the capacitance and the functional relationship.

[0012] The utility model has the advantages of small floor space, easy installation and testing.

[0013] (1) The capacitance type angle sensor and the testing device thereof have small floor space, are easy to install and test.

[0014] (2) The capacitive angle sensor is a space angle sensor, which can directly measure the change of the space two-dimensional angle;

[0015] (3) The capacitive angle sensor is realized by adopting the mode of plastic part plus surface plating, has low manufacturing cost, is light in weight, and can be used in occasions with strict requirements on weight and space. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the appearance diagram of the utility model;

[0017] Figure 2 is the front view of the utility model;

[0018] Figure 3 is the left view of the utility model;

[0019] Figure 4 the moving electrode plate front view;

[0020] Figure 5 the fixed electrode plate sectional view;

[0021] Figure 6 the fixed electrode plate left view;

[0022] Figure 7 the connecting block appearance diagram;

[0023] Figure 8 the horizontal shaft appearance diagram;

[0024] Figure 9 the hook-shaped support diagram;

[0025] Figure 10 the vertical plate appearance diagram;

[0026] Figure 11 the spring seat appearance diagram;

[0027] Figure 12 the top head sectional view.

[0028] The drawing signification: 1-fixed electrode plate, 2-moving electrode plate, 3-fixed plate, 4-connecting block, 5-suspender, 6-horizontal shaft, 7-washer, 8-nut, 9-support, 10-bearing, 11-two-dimensional displacement table, 12-Z axis lifting platform, 13-base, 14-vertical plate, 15-hook-shaped support, 16-fine adjustment screw rod, 17-spring seat, 18-compression spring, 19-top head. DETAILED DESCRIPTION

[0029] The utility model will be specifically explained in connection with the drawings as follows: Figures 1 to 12As shown, a kind of capacitive angle sensor testing device is by fixed plate 1, moving plate 2, fixed plate 3, connecting block 4, boom 5, horizontal shaft 6, washer 7, nut 8, support 9, bearing 10, two-dimensional displacement table 11, Z-axis lifting platform 12, base 13, vertical plate 14, hook-shaped support 15, fine adjustment screw 16, spring seat 17, compression spring 18, top head 19 composition.

[0030] The base 13 is square flat structure and the upper surface and side are provided with mounting hole, Z-axis lifting platform 12 is fixed on the upper surface of base 13 middle position, 2 supports 9 are fixed on the upper surface of base 13 respectively in front and back, 2 vertical plates 14 are fixed on the side of base 13 respectively left and right, two-dimensional displacement table 11 is fixed on the upper surface of Z-axis lifting platform 12, fixed plate 3 is installed on the upper part of two-dimensional displacement table 11.

[0031] Fixed plate 1 is cylindrical structure, one end is provided with concave spherical surface, and the surface layer of concave spherical surface is plated with metal induction layer, the metal induction layer is divided into 4 equal size areas, and 4 areas are insulated from each other, each area is provided with a 90 ° counterbore, and the inclined surface of the counterbore is used to weld the wire, the other end of fixed plate 1 is a plane, the plane is in contact with the upper surface of fixed plate 3, and the outer circumference of fixed plate 1 is uniformly distributed with 8 circular mounting holes; fixed plate 1 is installed on fixed plate 3 with screw, and fixed plate 3 is installed on two-dimensional displacement table 11.

[0032] Moving plate 2 is cylindrical structure, one end is convex spherical surface and the surface layer is electroplated with metal induction layer, the other end has rectangular boss, the boss is provided with two mounting holes, connecting block 4 and moving plate 2 are fixed together through two mounting holes, connecting block 4 has threaded hole on the upper end, the lower end of boom 5 is installed in the threaded hole on the upper end of connecting block 4, the upper end of boom 5 is processed with external thread and passes through the hole in the center part of horizontal shaft 6 and is fixed with washer 7 and nut 8, moving plate 2 can swing around the central axis of horizontal shaft 6 through boom 5, and boom 5 can be adjusted by adjusting the position of nut 8 to ensure that the spherical center of the spherical surface of moving plate 2 is located on the axis of horizontal shaft 6.

[0033] The two ends of horizontal shaft 6 are installed in the holes on the upper parts of left and right two supports 9 through two bearings 10, and the two supports 9 are fixed on the upper surface of base 13.

[0034] The right side vertical plate 14 upper part is installed with hook-shaped support 15, the hook-shaped support 15 is the structure of hook, the right end of hook-shaped support 15 is fixed on vertical plate 14 through screw, the left end of hook-shaped support 15 is equipped with fine tooth thread hole, fine adjustment screw rod 16 is installed in fine tooth thread hole, fine adjustment screw rod 16 can rotate so that fine adjustment screw rod 16 produces micro-motion along the axis of fine tooth thread hole, similarly, the upper end of left side vertical plate 14 is also installed with hook-shaped support 15, one end of hook-shaped support 15 is fixed on left side vertical plate 14 through screw, the fine tooth thread hole of the other end of hook-shaped support 15 installs spring seat 17, the outer side middle part of spring seat (17) is equipped with hexagonal structure, the outer side right part is equipped with fine tooth external thread, and is equipped with blind hole, compression spring 18 and top head 19 are arranged in the inner hole of spring seat 17, the front end of top head (19) is conical structure and is topped on connecting block (4); Top head 19 can be telescopic in spring seat 17 through the action of compression spring 18, top head 19 and fine adjustment screw rod 16 are respectively topped on the two sides of connecting block 4 and are compressed connecting block 14 through compression spring 18.

[0035] Working principle:

[0036] When testing, the fixed electrode plate 1 and the movable electrode plate 2 are fixed respectively, the distance between the spherical surfaces of the fixed electrode plate 1 and the movable electrode plate 2 is about 0.2-0.3 millimeters through adjusting the Z-axis lifting platform 12, the two-dimensional displacement platform 11 is adjusted so that the center points of the spherical surfaces of the fixed electrode plate 1 and the movable electrode plate 2 are on a vertical axis, at this time, the inductive capacitance between the two electrode plates will be generated. The position of the movable electrode plate 2 is changed by rotating the fine adjustment screw rod 16 to push the connecting block 4, so that the capacitance between the fixed electrode plate 1 and the movable electrode plate 2 changes, according to the change value of the capacitance and the function relationship, the change value of the angle can be calculated; further, the movable electrode plate 2 is rotated by an angle and then fixed, the above steps are repeated, the capacitance change between different positions can be measured, so that the spatial angle change can be measured.

Claims

1. A capacitive angle sensor test device, characterized by: The application relates to a two-dimensional displacement device, which comprises a fixed electrode plate (1), a movable electrode plate (2), a fixed plate (3), a connecting block (4), a suspender (5), a horizontal shaft (6), a gasket (7), a nut (8), a support (9), a bearing (10), a two-dimensional displacement table (11), a Z-axis lifting table (12), a base (13), a vertical plate (14), a hook-shaped support (15), a fine adjustment screw (16), a spring seat (17), a compression spring (18) and a top head (19), wherein the support (9), the vertical plate (14) and the Z-axis lifting table (12) are installed on the base; the fixed electrode plate (1) is fixed on the two-dimensional displacement table (11) through the fixed plate (3); the two-dimensional displacement table (11) and the Z-axis lifting table (12) are fastened together; the movable electrode plate (2) is fixed at the lower part of the suspender (5) through the connecting block (4); the movable electrode plate (2) can swing around the central axis of the horizontal shaft (6) through the suspender (5); two hook-shaped supports (15) are respectively provided with the fine adjustment screw (16) and the spring seat (17) on the hook-shaped supports (15); one end of the fine adjustment screw (16) is in abutment with the connecting block (4), and the movable electrode plate (2) is driven to rotate around the horizontal shaft through the rotation of the fine adjustment screw (16); the fine adjustment of the fixed electrode plate (1) can be driven through the fine adjustment of the two-dimensional displacement table (11) and the Z-axis lifting table (12), and the fixed electrode plate (1) is aligned with the movable electrode plate (2).

2. A capacitive angle sensor testing device according to claim 1, characterized in that: One end of the movable electrode plate (2) is provided with a convex spherical surface, and the other end is provided with a convex boss, and the convex boss is provided with a mounting hole.

3. A capacitive angle sensor testing device according to claim 1, characterized in that: One end of the fixed electrode plate (1) is provided with a concave spherical surface, and a metal induction layer is plated on the surface of the concave spherical surface.

4. A capacitive angle sensor testing device according to claim 3, characterized in that: The metal induction layer is divided into four areas, and each area is insulated from each other; each area is provided with a 90-degree counterbore, and the outer periphery of the fixed electrode plate (1) is uniformly provided with eight circular mounting holes.

5. A capacitive angle sensor testing device according to claim 1, characterized in that: The middle part of the horizontal shaft (6) is provided with a mounting hole perpendicular to the axis, the upper end of the suspender (5) is provided with an external thread, and the external thread part of the suspender (5) penetrates through the mounting hole of the horizontal shaft (6).

6. A capacitive angle sensor testing device according to claim 1, characterized in that: The outer middle part of the spring seat (17) is provided with a hexagonal structure, the outer right part is provided with a fine tooth external thread, and is provided with a blind hole for mounting the compression spring (18) and the top head (19), and the front end of the top head (19) is a conical structure and is in abutment with the connecting block (4).

7. A capacitive angle sensor testing device according to claim 1, characterized in that: The hook-shaped support (15) is a hook-shaped structure, one end is provided with a fine thread hole, and the other end is provided with a mounting hole.

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