Non-contact measurement equipment based on Hall element

Abstract

The invention relates to non-contact measuring equipment based on a Hall element. The non-contact measuring equipment mainly comprises a lower bottom plate, a stand column, a guide rail, a sliding block, a measuring platform, a rotating mechanism, a model, a measuring plate, a permanent magnet, the Hall element and a top plate. The vertical column is fixed on the lower bottom plate, the guide rail is installed on the vertical column, the measuring platform is installed on the sliding block, the rotating mechanism is installed on the measuring platform, the bottom of the rotating mechanism is connected with the measuring platform, and the top of the rotating mechanism is connected with the model. A permanent magnet is installed on the model, a Hall element is installed on the measuring plate, and the measuring plate is fixed on the top plate. The device drives the model to move through the motor, the magnetic field intensity of the permanent magnet arranged on the model is sensed through the Hall element, the distance relation between the Hall element and the model is obtained according to the principle that the magnetic field intensity of the permanent magnet changes along with the distance, and non-contact measurement of the Hall element on the position of the model is completed.

Description

Technical Field

[0001] The invention belongs to the field of experimental aerodynamics and relates to a non-contact measuring device based on a Hall element. Background Art

[0002] Wind tunnel capture trajectory test technology (CTS for short) is a special wind tunnel simulation test technology designed using the principle of relativity of motion and similarity theory to simulate the actual motion trajectory of an aircraft dropping external attachments during movement, thereby achieving the separation of the external attachments from the aircraft body. It has been applied to the test research on the separation characteristics of various aircraft such as rockets, providing a reliable test basis for the design and development of aircraft control systems.

[0003] Since the CTS mechanism is located inside the wind tunnel, when the wind tunnel is started, the CTS mechanism is impacted by wind load, resulting in a certain deviation between the mechanism and the windless state. In order to measure this deviation, combined with the limited space of the wind tunnel test, a Hall element (141) is used to sense the magnetic field intensity to complete the measurement of the distance deviation. First, a non-contact ground measurement device based on the Hall element (141) needs to be established to complete the technical verification before the wind tunnel test measurement.

[0004] Therefore, it is necessary to study a non-contact measurement device based on Hall elements, which is of great significance to solve the problem of position deviation in the wind tunnel test of CTS mechanism. In addition to wind tunnel tests, this non-contact measurement device can also be applied to other extreme measurement scenarios with limited space. Summary of the invention

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a non-contact measurement device based on a Hall element, and to realize ground verification of non-contact measurement by the Hall element.

[0006] The solution of the present invention is:

[0007] The present invention discloses a non-contact measuring device based on a Hall element, comprising: a lower base plate, a column, a guide rail, a back plate, a lead screw, a coupling, a lifting motor seat, a lifting motor, a slider, a measuring platform, a lead screw connecting plate, a rotating motor seat, a rotating motor, a model fixing plate, a rotating motor connecting piece, a top plate, a measuring plate, a model, a permanent magnet, a Hall element, a rotating motor seat, and a lead screw support; wherein,

[0008] The column is installed on the lower base plate, and the guide rail is installed on the column; the slider is installed on the guide rail and can slide along the guide rail;

[0009] The back plate is installed on the column to strengthen the structure;

[0010] The lifting motor seat is installed on the back plate, and the lifting motor is installed on the lifting motor seat;

[0011] Two lead screw supports are mounted on the back plate and are respectively connected to the two ends of the lead screw;

[0012] The lead screw is connected to the lifting motor through a coupling;

[0013] The top plate is mounted on the back plate;

[0014] The measuring plate is installed on the lower surface of the top plate;

[0015] One end of the lead screw connecting plate is connected to the lead screw, and the other end is connected to the measuring platform;

[0016] The rotating motor base is installed on the measuring platform;

[0017] The rotating motor is mounted on the rotating motor seat;

[0018] The rotating motor connecting piece is installed on the motor shaft of the rotating motor, and the model fixing plate is installed on the rotating motor connecting piece;

[0019] The model is fixed on a model fixing plate;

[0020] A plurality of permanent magnets are installed on the model;

[0021] A plurality of Hall elements are arranged on the measuring board;

[0022] The model is moved up and down by the rotation of the lifting motor, and is rotated by the rotation of the rotating motor. The Hall element senses the magnetic field of the permanent magnet on the model, and then obtains the position and angle of the model relative to the Hall element.

[0023] Furthermore, in the above-mentioned device, the lower base plate is a plate-like structure with a hole in the middle; the column is a long strip structure with a base, and the base has screw holes for connecting to the lower base plate.

[0024] Furthermore, in the above device, the backplane includes a first backplane, a second backplane, a third backplane and a fourth backplane; wherein,

[0025] The guide rail is installed on the front end surface of the column, the first back plate, the second back plate, and the third back plate are installed on the rear end surface of the column, and the fourth back plate is installed on the front end surface of the column;

[0026] The lifting motor seat is installed on the first back plate; two lead screw supports are respectively installed on the second back plate and the third back plate, and are respectively connected to the two ends of the lead screw; and the top plate is installed on the fourth back plate.

[0027] Furthermore, in the above-mentioned device, the guide rails and sliding blocks are provided in two pairs and are respectively installed on the front end surfaces of the two columns.

[0028] Furthermore, the above-mentioned device also includes a connecting plate; the connecting plate is a right-angled plate structure with reinforcing ribs in the middle; one end of the connecting plate is connected to the slider, and the other end is connected to the measuring platform; the two connecting plates are respectively installed on the two sliders.

[0029] Furthermore, in the above-mentioned device, the measuring platform is a plate-like structure, and the lower surface of the measuring platform is respectively connected to the connecting plate and the lead screw connecting plate; and the rotating motor seat is installed on the upper surface of the measuring platform.

[0030] Furthermore, in the above device, the lifting motor seat is a right-angle plate-shaped structure with reinforcing ribs at both ends; the lifting motor seat is vertically installed on the front end surface of the first back plate, and the lifting motor is installed inside the lifting motor seat;

[0031] The lifting motor is connected to the lead screw through a coupling; the lead screw is vertically fixed between two columns through two upper and lower lead screw supports; the lead screw supports are respectively installed on the front end surfaces of the second back plate and the third back plate.

[0032] Furthermore, the above-mentioned device also includes a rib plate, wherein the measuring plate is a rectangular plate-shaped structure with a slot at the lower end for fixing the Hall element; a threaded hole is provided at the upper end of the measuring plate for connecting the top plate; the top plate is a rectangular plate-shaped structure with threaded holes on the surface, and is vertical to the fourth back plate through the rib plate.

[0033] Furthermore, in the above-mentioned device, the model fixing plate is a rectangular plate-shaped structure, and a threaded hole is opened on the lower surface of the model fixing plate, which is fixed to the rotating motor connecting piece;

[0034] The lower surface of the model fixing plate is provided with threaded holes for fixing the model;

[0035] The rotating motor connecting piece is a convex-shaped three-dimensional structure, and the middle opening is used to connect the motor shaft of the rotating motor.

[0036] Furthermore, in the above-mentioned device, the surface of the model is provided with an opening for fixing the permanent magnet; when the model and the measuring plate are horizontal, the installation position of the permanent magnet corresponds to the installation position of the Hall element one by one, and the spacing is the same.

[0037] The beneficial effects of the present invention compared with the prior art are:

[0038] (1) The present invention is a non-contact measurement device based on a Hall element. The Hall element is used to sense the magnetic field strength of a permanent magnet, and the Hall element is used to perform non-contact measurement of the model position, providing a new non-contact measurement method for wind tunnel tests.

[0039] (2) The present invention designs a non-contact measurement device based on a Hall element, which uses a motor to drive the model to achieve automatic control of the measurement process.

[0040] (3) The present invention is a non-contact measurement device based on a Hall element. The Hall element used is very small and can be used in extremely narrow spaces.

[0041] (4) The non-contact measurement device based on the Hall element designed by the present invention has a compact overall design structure, is simple and reliable, and is easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a diagram of a non-contact measurement device based on a Hall element according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] The present invention discloses a non-contact measuring device based on a Hall element, comprising: a lower base plate 1, a column 2, a guide rail 4, a back plate, a lead screw 25, a coupling 21, a lifting motor seat 22, a lifting motor 23, a slider 7, a measuring platform 8, a lead screw connecting plate 19, a rotating motor seat 18, a rotating motor 24, a model fixing plate 16, a rotating motor connecting piece 17, a top plate 10, a measuring plate 14, a model 15, a permanent magnet 151, a Hall element 141, a rotating motor seat 18, and a lead screw support 20; wherein,

[0045] The column 2 is mounted on the lower base plate 1, and the guide rail 4 is mounted on the column 2; the slider 7 is mounted on the guide rail 4 and can slide along the guide rail 4;

[0046] The back plate is mounted on the column 2 to strengthen the structure;

[0047] The lifting motor seat 22 is installed on the back plate, and the lifting motor 23 is installed on the lifting motor seat 22;

[0048] Two lead screw supports 20 are mounted on the back plate and are respectively connected to the two ends of the lead screw 25;

[0049] The lead screw 25 is connected to the lifting motor 23 through the coupling 21;

[0050] The top plate 10 is mounted on the back plate;

[0051] The measuring plate 14 is mounted on the lower surface of the top plate 10;

[0052] One end of the lead screw connecting plate 19 is connected to the lead screw 25, and the other end is connected to the measuring platform 8;

[0053] The rotating motor seat 18 is installed on the measuring platform 8;

[0054] The rotating motor 24 is mounted on the rotating motor seat 18;

[0055] The rotating motor connecting member 17 is mounted on the motor shaft of the rotating motor 24, and the model fixing plate 16 is mounted on the rotating motor connecting member 17;

[0056] The model 15 is fixed on the model fixing plate 16;

[0057] The model 15 is provided with a plurality of permanent magnets 151 mounted thereon;

[0058] The measuring board 14 is provided with a plurality of Hall elements 141;

[0059] The model 15 moves up and down by rotating the lifting motor 23 , and rotates by rotating the rotating motor 24 . The Hall element 141 senses the magnetic field of the permanent magnet 151 disposed on the model 15 , and then obtains the position and angle of the model 15 relative to the Hall element 141 .

[0060] Preferably, the lower base plate 1 is a plate-like structure with a hole in the middle; the column 2 is a long strip structure with a base, and the base has screw holes for connecting to the lower base plate 1.

[0061] Preferably, the backplane includes a first backplane 3, a second backplane 5, a third backplane 9 and a fourth backplane 12; wherein,

[0062] The guide rail 4 is installed on the front end surface of the column 2, the first back plate 3, the second back plate 5, and the third back plate 9 are installed on the rear end surface of the column 2, and the fourth back plate 12 is installed on the front end surface of the column 2;

[0063] The lifting motor seat 22 is installed on the first back plate 3; the two screw supports 20 are respectively installed on the second back plate 5 and the third back plate 9, and are respectively connected to the two ends of the screw 25; the top plate 10 is installed on the fourth back plate 12.

[0064] Preferably, two pairs of guide rails 4 and sliders 7 are provided and respectively installed on the front end surfaces of the two columns 2 .

[0065] Preferably, it also includes a connecting plate 6; the connecting plate 6 is a right-angled plate structure with a reinforcing rib in the middle; one end of the connecting plate 6 is connected to the slider 7, and the other end is connected to the measuring platform 8; two connecting plates 6 are respectively installed on the two sliders 7.

[0066] Preferably, the measuring platform 8 is a plate-like structure, and the lower surface of the measuring platform 8 is respectively connected to the connecting plate 6 and the lead screw connecting plate 19 ; the rotating motor seat 18 is installed on the upper surface of the measuring platform 8 .

[0067] Preferably, the lifting motor seat 22 is a right-angle plate-shaped structure with reinforcing ribs at both ends; the lifting motor seat 22 is vertically installed on the front end surface of the first back plate 3, and the lifting motor 23 is installed inside the lifting motor seat 22;

[0068] The lifting motor 23 is connected to the lead screw 25 through the coupling 21; the lead screw 25 is vertically fixed between the two columns 2 through the upper and lower lead screw supports 20; the lead screw supports 20 are respectively installed on the front end surfaces of the second back plate 5 and the third back plate 9.

[0069] Preferably, it also includes a rib plate 11, and the measuring plate 14 is a rectangular plate structure with a slot at the lower end for fixing the Hall element 141; a threaded hole is provided at the upper end of the measuring plate 14 for connecting the top plate 10; the top plate 10 is a rectangular plate structure with threaded holes on the surface, and is in a vertical state with the fourth back plate 12 through the rib plate 11.

[0070] Preferably, the model fixing plate 16 is a rectangular plate-shaped structure, and a threaded hole is opened on the lower surface of the model fixing plate 16, which is fixed to the rotating motor connecting member 17;

[0071] The lower surface of the model fixing plate 16 is provided with threaded holes for fixing the model 15;

[0072] The rotary motor connector 17 is a convex-shaped three-dimensional structure, and a hole in the middle is used to connect the motor shaft of the rotary motor 24 .

[0073] Preferably, the surface of the model 15 is provided with an opening for fixing the permanent magnet 151 ; when the model 15 and the measuring plate 14 are horizontal, the installation position of the permanent magnet 151 corresponds to the installation position of the Hall element 141 one by one, and the spacing is the same.

[0074] Example

[0075] The non-contact measuring device based on Hall element described in the present invention first installs the model 15 on the model fixing plate 16, and the lifting motor 23 rotates to drive the model 15 to move downward, and measures whether the model 15 is horizontal through equipment such as a level meter. When it descends and stops, it measures whether it is horizontal, and adjusts the model 15 to a horizontal state by driving the rotating motor 24.

[0076] The lifting motor 23 rotates and drives the model 15 to move upward. When the permanent magnet 151 on the model 15 abuts against and contacts the Hall element 141, the model 15 stops.

[0077] Then, the model 15 is driven to descend 1 mm each time, and the Hall element 141 is used to perform synchronous measurement to obtain the distance value measured by the Hall element 141 .

[0078] When the model 15 drops to 3 mm, the model 15 is driven to rotate 0.5° each time, and the Hall element 141 is used for synchronous measurement, and the angle value measured by the Hall element 141 is calculated. The pitch angle of the model 15 is not greater than plus or minus 2 degrees, and the step length of each rotation is not greater than 0.5°.

[0079] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A non-contact measuring device based on a Hall element, characterized in that: include: A lower base plate (1), a column (2), a guide rail (4), a back plate, a lead screw (25), a coupling (21), a lifting motor seat (22), a lifting motor (23), a slider (7), a measuring platform (8), a lead screw connecting plate (19), a rotating motor seat (18), a rotating motor (24), a model fixing plate (16), a rotating motor connecting piece (17), a top plate (10), a measuring plate (14), a model (15), a permanent magnet (151), a Hall element (141), a rotating motor seat (18), and a lead screw support (20); wherein: The column (2) is mounted on the lower base plate (1), and the guide rail (4) is mounted on the column (2); the slider (7) is mounted on the guide rail (4) and can slide along the guide rail (4); The back plate is mounted on the column (2) to strengthen the structure; The lifting motor seat (22) is mounted on the back plate, and the lifting motor (23) is mounted on the lifting motor seat (22); Two screw supports (20) are mounted on the back plate and are respectively connected to the two ends of the screw (25); The lead screw (25) is connected to the lifting motor (23) via a coupling (21); The top plate (10) is mounted on the back plate; The measuring plate (14) is mounted on the lower surface of the top plate (10); One end of the lead screw connecting plate (19) is connected to the lead screw (25), and the other end is connected to the measuring platform (8); The rotating motor seat (18) is mounted on the measuring platform (8); The rotating motor (24) is mounted on the rotating motor seat (18); The rotating motor connecting member (17) is mounted on the motor shaft of the rotating motor (24), and the model fixing plate (16) is mounted on the rotating motor connecting member (17); The model (15) is fixed on a model fixing plate (16); A plurality of permanent magnets (151) are mounted on the model (15); A plurality of Hall elements (141) are provided on the measuring plate (14); The model (15) is driven to move up and down by the rotation of the lifting motor (23), and the model (15) is driven to rotate by the rotation of the rotating motor (24). The Hall element (141) senses the magnitude of the magnetic field of a permanent magnet (151) disposed on the model (15), thereby obtaining the position and angle of the model (15) relative to the Hall element (141).

2. A non-contact measuring device based on a Hall element according to claim 1, characterized in that: The lower base plate (1) is a plate-like structure with a hole in the middle; the upright column (2) is a long strip-shaped structure with a base, and the base has screw holes for connecting to the lower base plate (1).

3. A non-contact measurement device based on a Hall element according to claim 1, characterized in that: The backplane comprises a first backplane (3), a second backplane (5), a third backplane (9) and a fourth backplane (12); wherein: The guide rail (4) is installed on the front end surface of the column (2), the first back plate (3), the second back plate (5), and the third back plate (9) are installed on the rear end surface of the column (2), and the fourth back plate (12) is installed on the front end surface of the column (2); The lifting motor seat (22) is mounted on the first back plate (3); two lead screw supports (20) are respectively mounted on the second back plate (5) and the third back plate (9), and are respectively connected to the two ends of the lead screw (25); and the top plate (10) is mounted on the fourth back plate (12).

4. A non-contact measuring device based on a Hall element according to claim 3, characterized in that: The guide rails (4) and sliding blocks (7) are provided in two pairs and are respectively mounted on the front end surfaces of the two upright posts (2).

5. The non-contact measuring device based on Hall element according to claim 1, characterized in that: It also includes a connecting plate (6); the connecting plate (6) is a right-angled plate-shaped structure with a reinforcing rib in the middle; one end of the connecting plate (6) is connected to the slider (7) and the other end is connected to the measuring platform (8); the two connecting plates (6) are respectively mounted on the two sliders (7).

6. A non-contact measuring device based on a Hall element according to claim 5, characterized in that: The measuring platform (8) is a plate-shaped structure, and the lower surface of the measuring platform (8) is respectively connected to the connecting plate (6) and the lead screw connecting plate (19); the rotating motor seat (18) is installed on the upper surface of the measuring platform (8).

7. The non-contact measuring device based on Hall element according to claim 3, characterized in that: The lifting motor seat (22) is a right-angle plate-shaped structure with reinforcing ribs at both ends; the lifting motor seat (22) is vertically mounted on the front end surface of the first back plate (3), and the lifting motor (23) is mounted inside the lifting motor seat (22); The lifting motor (23) is connected to the lead screw (25) through a coupling (21); the lead screw (25) is vertically fixed between the two columns (2) through two upper and lower lead screw supports (20); the lead screw supports (20) are respectively installed on the front end surfaces of the second back plate (5) and the third back plate (9).

8. The non-contact measuring device based on Hall element according to claim 1, characterized in that: It also includes a rib plate (11), the measuring plate (14) is a rectangular plate structure, a slot is provided at the lower end for fixing the Hall element (141); a threaded hole is provided at the upper end of the measuring plate (14) for connecting to the top plate (10); the top plate (10) is a rectangular plate structure, a threaded hole is provided on the surface, and is in a vertical state with the fourth back plate (12) through the rib plate (11).

9. The non-contact measuring device based on Hall element according to claim 8, characterized in that: The model fixing plate (16) is a rectangular plate-shaped structure, and a threaded hole is opened on the lower surface of the model fixing plate (16) for fixing to the rotating motor connecting piece (17); The lower surface of the model fixing plate (16) is provided with threaded holes for fixing the model (15); The rotary motor connecting piece (17) is a convex-shaped three-dimensional structure, and a hole in the middle is used to connect the motor shaft of the rotary motor (24).

10. The non-contact measuring device based on Hall element according to claim 1, characterized in that: The surface of the model (15) is provided with an opening for fixing the permanent magnet (151); when the model (15) and the measuring plate (14) are horizontal, the installation position of the permanent magnet (151) corresponds to the installation position of the Hall element (141) one by one, and the spacing is the same.

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