A spatial magnetic field depictor capable of displaying measurement information

Abstract

The invention relates to a space magnetic field depictor capable of displaying measurement information, comprising a base and a hollow groove thereof, a rectangular groove, a rotating measuring plate, a central rotating shaft supporting the rotating measuring plate, a first rotating shaft support, a second bearing support, a rotating handle, a detection coil, a single chip computer and a display screen; a hollow groove is provided on the surface of the base; the rectangular groove is divided into a first rectangular groove and a second rectangular groove; the invention is characterized in that: a first rotating shaft support and a second rotating shaft support are respectively provided on both sides of the center of the base; threaded holes are respectively provided on both sides of the first rectangular groove; a transmission device for driving the first rectangular groove to move is also provided on the base; the invention can measure the magnetic field of the entire space near a single current-carrying circular coil by rotating the measuring plate, and can also detect the distribution of the space magnetic field formed by multiple combinations of two or more current-carrying circular coils, so as to complete the measurement of the synthetic magnetic field of different angles and different spacings between two identical current-carrying circular coils.

Description

Technical Field

[0001] The invention relates to a spatial magnetic field depicting instrument capable of displaying measurement information. Background Art

[0002] The existing magnetic field measuring instruments in colleges and universities can only measure the magnetic field near the central axis plane of a single circular current-carrying coil or the uniform magnetic field in the central plane of the Helmholtz coil. The detectable area is fixed and cannot be adjusted arbitrarily. The measurement results can only be read through a millivolt meter, which has large errors and is inconvenient, greatly limiting students' exploration and understanding of the magnetic field distribution in the entire space. In addition, the existing magnetic field measuring instruments require the coil to be moved manually, which results in inaccurate moving distance, causing deviations in the measurement data, and the measurement results cannot be directly displayed on the display screen. Summary of the invention

[0003] In view of the above, an object of the present invention is to provide a spatial magnetic field profiler to solve at least one aspect of the above problems.

[0004] The technical scheme adopted to achieve the purpose of the present invention is: a spatial magnetic field tracer that can display measurement information, which includes a base and its hollow groove, a rectangular groove, a rotating measurement plate, a central rotating shaft supporting the rotating measurement plate, a first rotating shaft support, a second bearing support, a rotating handle, a detection coil, a single-chip microcomputer and a display screen; the surface of the base is provided with a hollow groove, and four evenly distributed circular holes are provided at one end of the hollow groove; the rectangular groove is divided into a first rectangular groove and a second rectangular groove; the bottom of the second rectangular groove is provided with two circular holes, and the spacing between the two circular holes at the bottom of the second rectangular groove is equal to the spacing between any two adjacent circular holes in the four circular holes on the base; it is characterized in that: a first rotating shaft support and a second rotating shaft support are respectively provided on both sides of the center of the base; the central rotating shaft is supported and fixedly connected to both sides of the base by the first rotating shaft support and the second rotating shaft support on both sides of the middle of the base, and the central rotating shaft is fixedly connected to the rotating measurement plate; the rotating handle is connected to the end of the central rotating shaft ; The rotating measuring plate is fixed on the central rotating shaft; threaded holes are respectively provided on both sides of the first rectangular groove; a transmission device for driving the first rectangular groove to move is also provided on the base, and the transmission device includes a stepping motor, a screw rod, a bearing, a bearing support and a forward and reverse control switch. The stepping motor, the screw rod and the bearing are respectively provided with two, and the stepping motor is respectively fixed on both sides of the hollow groove on the edge of the base. One end of the screw rod is connected to the output end of the stepping motor, and the other end is connected to the bearing. The screw rod is matched with the threaded holes at both ends of the first rectangular groove. The bearing is fixed on the bearing support, and the bearing support is fixed on the surface of the base. The forward and reverse control switch is electrically connected to the stepping motor; the detection coil is electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the display screen. The single-chip microcomputer displays the measurement results through the display screen connected to it, and the single-chip microcomputer stores the measurement values ​​in the computer, and uses MATLAB drawing software to draw the spatial distribution curve of the magnetic field in the measurement area.

[0005] Furthermore, the transmission device also includes a scale rod, which is fixed on the side of the screw rod and is located at the same horizontal height as the screw rod. The scale rod is evenly provided with distance scales.

[0006] Furthermore, the circular hole on the bottom surface of the second rectangular groove is connected to any two adjacent circular holes among the four circular holes on the base through bolts.

[0007] Furthermore, the rotation measuring plate is in a Γ shape, a plurality of regularly arranged circular holes are provided on the surface of the rotation measuring plate, and a groove extending upward is provided at a position of the rotation measuring plate close to the second rotating shaft support.

[0008] Furthermore, the base and the measuring plate are made of transparent acrylic plate.

[0009] Furthermore, the bottom surface of the base is provided with four foot pads.

[0010] Furthermore, the foot pads are respectively located at the four corners of the base.

[0011] Furthermore, it also includes a plurality of identical circular coils, a detection coil, a single chip microcomputer and a display screen.

[0012] Furthermore, the circular coil is connected to a power source, and the detection coil is connected to a single chip microcomputer and a display screen thereof.

[0013] The beneficial effects of the present invention are as follows: the measuring instrument adopts an acrylic transparent plate, which has a beautiful appearance, low cost, exquisite and simple structure, and each part is independent and can be assembled and disassembled. Once a part is damaged, only the damaged part can be replaced and it can be reused, thereby extending the service life of the instrument and saving costs; the instrument occupies a small space, and when not in use, it can be disassembled, broken down into parts, and stored in categories, which greatly saves the storage space of the instrument; the measuring instrument can give full play to its mobile and flexible characteristics, that is, by rotating the measuring plate, it can measure the magnetic field in the whole space near a single current-carrying circular coil, and can also detect multiple types of two or more current-carrying circular coils. The distribution of the spatial magnetic field formed by the combination can complete the measurement of the synthetic magnetic field at different angles and different spacings between two identical current-carrying circular coils. The measurement is rich, flexible and diverse, and the measurement results are displayed on the microcontroller display screen. The measurement values ​​stored in the computer by the microcontroller are used to depict the spatial magnetic field distribution curve using MATLAB drawing software, so as to display the measurement results more intuitively and accurately. The device can drive the movement of the first rectangular groove through the transmission device, without manual adjustment, and can also view the moving distance of the first rectangular groove through the scale rod, thereby greatly increasing the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 A schematic diagram of the base structure.

[0016] Figure 3 It is a schematic diagram of the transmission structure.

[0017] Figure 4 Schematic diagram of the first rectangular groove structure.

[0018] In the figure, 1-circular coil, 2-rotating measuring plate, 3-central rotating shaft, 4-second rectangular groove, 5-first rectangular groove, 6-scale rod, 7-transmission device, 8-bottom plate, 9-rotating handle, 10-first rotating shaft support, 11-hollow groove, 12-round hole, 13-foot pad, 14-stepping motor, 15-bearing, 16-screw, 17-bearing support, 18-threaded hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 , Figure 2 , Figure 3 , Figure 4 The structure of a spatial magnetic field depictor according to one embodiment of the present invention is schematically shown.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a spatial magnetic field tracer that can display measurement information includes a base and its hollow groove, a rectangular groove, a rotating measuring plate, a central rotating shaft supporting the rotating measuring plate, a first rotating shaft support, a second bearing support, a rotating handle, a detection coil, a single-chip microcomputer and a display screen; the surface of the base is provided with a hollow groove, and four evenly distributed circular holes are provided at one end of the hollow groove; the rectangular groove is divided into a first rectangular groove and a second rectangular groove; two circular holes are provided at the bottom of the second rectangular groove, and the spacing between the two circular holes at the bottom of the second rectangular groove is equal to the spacing between any two adjacent circular holes in the four circular holes on the base; it is characterized in that: a first rotating shaft support and a second rotating shaft support are respectively provided on both sides of the center of the base; the central rotating shaft is supported and fixedly connected to both sides of the base by the first rotating shaft support and the second rotating shaft support on both sides of the middle part of the base, and the central rotating shaft is fixedly connected to the rotating measuring plate; the rotating handle is connected to the end of the central rotating shaft; the rotating measuring plate Fixed on the central rotating shaft; threaded holes are respectively provided on both sides of the first rectangular groove; a transmission device for driving the first rectangular groove to move is also provided on the base, and the transmission device includes a stepping motor, a screw rod, a bearing, a bearing support and a forward and reverse control switch. The stepping motor, the screw rod and the bearing are respectively provided with two, and the stepping motor is respectively fixed on both sides of the hollow groove on the edge of the base, one end of the screw rod is connected to the output end of the stepping motor, and the other end is connected to the bearing. The screw rod is matched with the threaded holes at both ends of the first rectangular groove, the bearing is fixed on the bearing support, and the bearing support is fixed on the surface of the base, and the forward and reverse control switch is electrically connected to the stepping motor; the detection coil is electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the display screen. The single-chip microcomputer displays the measurement results through the display screen connected to it, and the single-chip microcomputer stores the measurement values ​​in the computer, and uses MATLAB drawing software to draw the spatial distribution curve of the magnetic field in the measurement area.

[0022] like Figure 1 , Figure 3 , Figure 4As shown, the first rectangular groove is connected with the screw rod, and the screw rod is connected with the stepping motor, so that the rotation of the stepping motor drives the rotation of the screw rod, and the rotation of the screw rod drives the first rectangular groove to move left and right on the screw rod, thereby adjusting the position of the Helmholtz coil on the first rectangular groove.

[0023] like Figure 1 , Figure 3 , Figure 4 As shown, the forward and reverse control switch is electrically connected to the stepper motor, so that the forward and reverse rotation of the stepper motor can be controlled by adjusting the forward and reverse control switch.

[0024] like Figure 1 , Figure 3 , Figure 4 As shown, the circular hole at the bottom of the second rectangular groove is sequentially connected and fixed to any two adjacent circular holes among the four circular holes on the base by bolts.

[0025] like Figure 1 , Figure 3 , Figure 4 As shown, the transmission device also includes a scale rod, which is fixed on the side of the screw rod and is located at the same horizontal height as the screw rod. Distance scales are evenly arranged on the scale rod. When the first rectangular groove is driven to move by the transmission device, the distance moved by the first rectangular groove can be checked through the scale rod, so that the measured data is more accurate.

[0026] like Figure 1 , Figure 2 As shown, the support foot is provided with a slot for engaging the shaft support that supports the central shaft of the rotating measuring plate, so that the shaft support of the rotating measuring plate can be easily engaged on the support foot, and the height of the support foot is greater than the height of the groove, so that the measuring plate is suspended in the air.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it also includes multiple circular coils, detection coils, a single-chip microcomputer and a display screen.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the circular coil is connected to a power source through a wire; and the detection coil is connected to a single chip microcomputer.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the lower end of the circular coil is placed in the first or second rectangular groove, the first rectangular groove slides on the hollow groove through a transmission device, and the two circular holes at the bottom of the second rectangular groove are connected and fixed to any two adjacent circular holes among the four circular holes on the base by bolts.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the rotating measuring plate is in a Γ shape, so that the circular coil can only be inserted from one end of the measuring plate, and the other end prevents the circular coil from moving outside the measuring plate.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the base, the rotating measuring plate and the central rotating shaft fixed on one side of the rotating measuring plate are all made of transparent acrylic plate, thereby reducing the overall weight of the device, and the transparent acrylic plate is convenient for users to observe.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the bottom surface of the base is provided with four foot pads, and the foot pads are respectively located at the four corners of the base.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, when the present invention is used, the second rectangular groove is connected to the hollow groove and the circular hole of the base by bolts, the second rectangular groove is connected to any two adjacent circular holes among the four circular holes of the base by bolts, the first circular coil and the second coaxial circular coil are passed through the rotating measuring plate, the shaft support supporting the central shaft of the rotating measuring plate is engaged in the groove of the supporting foot, the relative position of the rectangular groove of the first circular coil and the two coaxial circular coils is adjusted by the rotation of the transmission device, and the two circular coils are energized by the measuring instrument so that the two circular coils generate a magnetic field.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, when detecting the magnetic field distribution of a single circular coil or multiple circular coils in the whole space, the second rectangular groove is installed in the narrow hollow groove and the circular hole of the base through the screw, and the first circular coil and the second circular coil are respectively engaged in the corresponding grooves, and the appropriate voltage and current are input to each circular coil through the wire, and the forward and reverse control switch is pressed to drive the rotation of the stepping motor and the lead screw, and the first rectangular groove is driven to move by the lead screw, so that the distance between the two centers of the circular coil in the first rectangular groove and the circular coil in the second rectangular groove is the distance of the radius of the circular coil, that is, a Helmholtz coil is formed, and the detection coil bayonet is placed in different circular holes of the Helmholtz coil on the rotating measurement plate in turn, and the detection coil is rotated to make the maximum value appear on the single-chip computer display screen, and the maximum measurement values ​​at different positions are stored in the computer in turn, and the spatial distribution curves of different magnetic fields are drawn in turn on the computer using MATLAB drawing software.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, when measuring the magnetic field of a single circular coil, the circular coil is placed in the second rectangular groove, the power is turned on, and the detection coil is used to measure the magnetic field at the circular holes at different positions in the middle of the circular coil. The magnetic field measurement values ​​of the circular coil are displayed in sequence on the single-chip display screen, and the magnetic field spatial distribution curve is drawn by a computer.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, when measuring the magnetic field of two current-carrying circular coils separated by a certain distance or the magnetic field jointly generated by multiple current-carrying circular coils separated by a certain distance, the second rectangular groove is connected to the circular hole of the bottom plate, and multiple first rectangular grooves are connected to the screw rod of the transmission device in sequence. If there are two or more circular coils to be measured, one of the circular coils is clamped in the first rectangular groove, and the remaining circular coils are placed in different first rectangular grooves respectively. The spacing between adjacent circular coils and the spacing between adjacent first rectangular grooves are adjusted to an equidistant arrangement according to experimental needs, and the magnetic field between the current-carrying circular coils is measured using a detection coil.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, when the rotating measuring plate is not in use, the central rotating shaft of the measuring plate is separated from the rotating shaft support, so that the measuring plate can be taken out, which is convenient for storing or carrying the measuring plate and the base plate.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the single chip microcomputer used is a 51 single chip microcomputer.

[0039] The above are only some embodiments of the present invention. For those skilled in the art, at least one variation and improvement can be made without departing from the inventive concept of the present invention, and all of these belong to the protection scope of the present invention.

Claims

1. A spatial magnetic field tracer capable of displaying measurement information, comprising a base and a hollow groove thereof, a rectangular groove, a rotating measuring plate, a central rotating shaft supporting the rotating measuring plate, a first rotating shaft support, a second bearing support, a rotating handle, a detection coil, a single-chip microcomputer and a display screen; the surface of the base is provided with a hollow groove, and one end of the hollow groove is provided with four evenly distributed circular holes; the rectangular groove is divided into a first rectangular groove and a second rectangular groove; the bottom of the second rectangular groove is provided with two circular holes, and the spacing between the two circular holes at the bottom of the second rectangular groove is equal to the spacing between any two adjacent circular holes among the four circular holes on the base; the characteristics are as follows: A first rotating shaft support and a second rotating shaft support are respectively provided on both sides of the center of the base; the central rotating shaft is supported and fixedly connected to both sides of the base by the first rotating shaft support and the second rotating shaft support on both sides of the middle part of the base, and the central rotating shaft is fixedly connected to the rotating measuring plate; the rotating handle is connected to the end of the central rotating shaft; the rotating measuring plate is fixed on the central rotating shaft; threaded holes are respectively provided on both sides of the first rectangular groove; a transmission device for driving the first rectangular groove to move is also provided on the base, and the transmission device includes a stepping motor, a screw rod, a bearing, a bearing support and a forward and reverse control switch, and the stepping motor, the screw rod and the bearing are respectively There are two stepper motors respectively fixed on both sides of the hollow groove on the edge of the base, one end of the screw rod is connected to the output end of the stepper motor, and the other end is connected to the bearing, the screw rod is matched with the threaded holes at both ends of the first rectangular groove, the bearing is fixed on the bearing support, the bearing support is fixed on the surface of the base, and the forward and reverse control switch is electrically connected to the stepper motor; the detection coil is electrically connected to the single-chip microcomputer, the single-chip microcomputer is electrically connected to the display screen, the single-chip microcomputer displays the measurement result through the display screen connected to it, the single-chip microcomputer stores the measurement value in the computer, and uses MATLAB drawing software to draw the spatial distribution curve of the magnetic field in the measurement area; the circular hole on the bottom surface of the second rectangular groove is connected to any two adjacent circular holes among the four circular holes on the base by bolts; The rotating measuring plate is in a Γ shape, and a plurality of regularly arranged circular holes are provided on the surface of the rotating measuring plate. A groove extending upward is provided at a position of the rotating measuring plate close to the second rotating shaft support.

2. A spatial magnetic field depiction instrument capable of displaying measurement information according to claim 1, characterized in that: The transmission device also includes a scale rod, which is fixed on the side of the screw rod and is located at the same horizontal height as the screw rod. Distance scales are evenly arranged on the scale rod.

3. A spatial magnetic field depiction instrument capable of displaying measurement information according to claim 1, characterized in that: The base and the measuring plate are made of transparent acrylic plate.

4. A spatial magnetic field depictor capable of displaying measurement information according to claim 1, characterized in that: The bottom surface of the base is provided with four foot pads.

5. A spatial magnetic field depiction instrument capable of displaying measurement information according to claim 4, characterized in that: The foot pads are respectively located at the four corners of the base.

6. The spatial magnetic field depictor capable of displaying measurement information according to claim 1, characterized in that: It also includes a plurality of identical circular coils, a detection coil, a single chip microcomputer and a display screen.

7. A spatial magnetic field depiction instrument capable of displaying measurement information according to claim 6, characterized in that: The circular coil is connected to a power source, and the detection coil is connected to a single chip microcomputer and a display screen thereof.

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