Novel applicable Hall effect experimental instrument

Abstract

The utility model provides an applicable novel Hall effect experimental instrument, which comprises a box body and an electric box which are electrically connected with each other. A working plate is arranged at the top of the box body, a coil framework, a binding post and a double-pole double-throw switch are arranged on the working plate, a solenoid coil is wound on the coil framework, a transparent scribed line indicating sleeve is mounted on the right side of the coil framework, a sensor moving rod is inserted into the transparent scribed line indicating sleeve, and indicating scribed lines are arranged on the transparent scribed line indicating sleeve; the binding post is connected with the double-pole-double-throw switch through an electric wire, and the working plate is provided with a Kani seat which is connected with the double-pole-double-throw switch through a wire. The utility model relates to the field of experimental instruments, which avoids the complexity of using two instruments in the traditional experiment, reduces the occupied space of the instruments, saves the field resources of a laboratory, and improves the use convenience of the instruments.

Description

Technical Field

[0001] This utility model relates to the field of experimental instruments, and in particular to a novel applicable Hall effect experimental instrument. Background Technology

[0002] The existing experimental setup requires first using a Hall effect experimental apparatus to understand the Hall effect, and then using a solenoid magnetic field distribution experimental apparatus to conduct the experiment. During the experiment, the magnetic field strength needs to be calculated based on the technical parameters of the coil and the given current. This requires the use of two instruments, and the calculation is quite complicated. If the calculation results need to be verified, a millitrometer or nuclear magnetic resonance is also required for standard measurements. Several instruments need to be used simultaneously, which is very inconvenient, takes up a lot of space, and consumes manpower and resources. Utility Model Content

[0003] In view of this, the present invention aims to propose a novel Hall effect experimental apparatus that avoids the cumbersome requirement of using two instruments in traditional experiments, reduces the space occupied by the instruments, saves laboratory space resources, and improves the convenience of instrument use.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A novel Hall effect experimental apparatus includes a housing and an electrical box. The housing is electrically connected to the electrical box. A working plate is provided on the top of the housing. A coil frame, terminals, and a double-pole double-throw switch are provided on the working plate. A solenoid coil is wound on the coil frame. A transparent etched indicator sleeve is installed on the right side of the coil frame. A sensor moving rod is inserted into the transparent etched indicator sleeve. Indicator lines are provided on the transparent etched indicator sleeve.

[0006] The terminal block is connected to the double-pole double-throw switch via an electrical wire, and the work plate is provided with a Connie bracket which is connected to the double-pole double-throw switch via a wire.

[0007] Furthermore, a sensor base is installed inside the sensor moving rod, and a Hall sensor and a millitrometer sensor are installed on the sensor base. The millitrometer sensor is located to the left of the Hall sensor, and a sensing cover is installed at the left end of the sensor moving rod, which abuts against the millitrometer sensor.

[0008] Furthermore, a millitrile connector and a Hall sensor connector are installed at the right end of the sensor moving rod.

[0009] Furthermore, the bottom of the housing is provided with feet, and connecting nails are installed on the housing to fix the coil frame to the working plate of the housing.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] The novel Hall effect experimental apparatus described in this utility model integrates the Hall effect experiment with the measurement function of solenoid magnetic field distribution characteristics into one instrument, avoiding the cumbersome requirement of using two instruments in traditional experiments, reducing the space occupied by the instruments, saving laboratory space resources, and improving the convenience of instrument use. When measuring the distribution characteristics of the solenoid magnetic field, it is no longer necessary to calculate the magnetic field strength through coil technical parameters and given current as in the traditional method. Instead, the magnetic field strength can be directly read from the millitrometer, which greatly saves the time and effort in the calculation process, making the experimental operation more efficient and time-saving.

[0012] This allows students to easily compare and analyze the theoretical magnetic field strength value calculated based on calculations with the actual magnetic field strength value measured by a millitrometer. This helps students to understand the difference between theory and actual measurement more intuitively, deepen their understanding of magnetic field-related knowledge, and also facilitates a deeper understanding of the performance characteristics and properties of a millitrometer based on the Hall effect, thereby improving teaching effectiveness and enhancing students' understanding and application of experimental content. Attached Figure Description

[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0014] Figure 1 This is an overall schematic diagram of the novel Hall effect experimental apparatus applicable to the embodiments of this utility model;

[0015] Figure 2 This is a top view of the novel Hall effect experimental apparatus described in this embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the front panel of the electrical box of the novel Hall effect experimental instrument described in this embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the rear panel of the electrical box of the novel Hall effect experimental instrument according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the coil frame of the novel Hall effect experimental apparatus described in this embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the sensor moving rod of the novel Hall effect experimental apparatus described in this embodiment of the present invention;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Housing; 101. Foot; 102. Connecting pin; 2. Coil frame; 3. Solenoid coil; 4. Transparent graduated indicator sleeve; 5. Indicator graduations; 6. Sensor moving rod; 601. Sensor base; 602. Hall sensor; 603. Milliwatt meter sensor; 604. Sensor cover; 7. Milliwatt meter connector; 8. Hall sensor connecting wire; 9. Working board; 10. Terminal block; 11. Double-pole double-throw switch; 12. Connie connector; 13. Electrical box. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This embodiment relates to a novel Hall effect experimental apparatus that avoids the cumbersome requirement of using two instruments in traditional experiments, reduces the space occupied by the instruments, saves laboratory space resources, and improves the convenience of instrument use.

[0026] Based on the above design concept, an exemplary structure of the novel Hall effect experimental apparatus applicable to this embodiment is as follows: Figures 1-6 As shown, it mainly includes a housing 1 and an electrical box 13. The housing 1 and the electrical box 13 are electrically connected. The top of the housing 1 is provided with a working plate 9. The working plate 9 is provided with a coil frame 2, a terminal block 10 and a double-pole double-throw switch 11. A solenoid coil 3 is wound on the coil frame 2. A transparent engraved indicator sleeve 4 is installed on the right side of the coil frame 2. A sensor moving rod 6 is inserted into the transparent engraved indicator sleeve 4. The transparent engraved indicator sleeve 4 is provided with indicator engravings 5. The terminal block 10 is connected to the double-pole double-throw switch 11 by a wire. A Connie bracket is provided on the working plate and connected to the double-pole double-throw switch by a wire.

[0027] A sensor base 601 is installed inside the sensor moving rod 6. A Hall sensor 602 and a millitr sensor 603 are installed on the sensor base 601. The millitr sensor 603 is located to the left of the Hall sensor 602. A sensing cover 604 is installed at the left end of the sensor moving rod 6, and the sensing cover 604 abuts against the millitr sensor 603.

[0028] The right end of the sensor moving rod 6 is equipped with a millitrile connector 7 and a Hall sensor connecting cable 8.

[0029] The bottom of the housing 1 is provided with feet 101, and connecting nails 102 are installed on the housing 1 to fix the coil frame 2 to the housing 1.

[0030] When using the novel Hall effect experimental apparatus described in this embodiment:

[0031] 1. Place the box 1 and the electrical box 13 on a stable experimental platform;

[0032] 2. Connect the Hall sensor 602 connecting wire 8 to the Hall plate V on the working board 9 respectively. H and Hall effect film I H Connect the terminal block (10) to the Hall voltage input, Hall current output, and excitation current output on the electrical box, and connect the Hall voltage, Hall current, and excitation current on the working board 9 to the application wires. Connect the millitrometer connector 7 to the millitrometer in the electrical box. Turn the current and voltage knobs of the electrical box counterclockwise to the bottom, turn on the electrical box to preheat for 5 minutes, move the sensor moving rod 6 out of the coil and check if the magnetic field reading is zero, then zero it.

[0033] Experiment 1:

[0034] The magnetic field strength of the solenoid coil 3 is calculated under a specific current using the coil's technical parameters, and the magnetic field strength measured by the millitrometer sensor is calibrated.

[0035] (1) Place the probe near the center of the solenoid coil 3 and read the probe readings X1 at the front and back of the coil ends, and at the front 1 and back 2 of the coil ends through the graduations 5 on the indicator sleeve. ， X2 ， The probe's position reading at the center is...

[0036] X0 ， =X1 ， + (X2) ， —X1 ， ) / 2=1 / 2(X1) ， +X2 ， );

[0037] (2) Adjust the working current I H =3.00mA, excitation current I M =0.6A;

[0038] (3) Calculate the magnetic induction intensity B at the center of the solenoid coil 3.

[0039] B0=μ O nI M ·L / (L 2 +D2 ) 1 / 2 =V H / k H I M ;

[0040] The magnetic field strength is read from the magnetic field strength B on the electrical box and compared. The accuracy of the sensor measurement can be checked; if inaccurate, the calibration knob on the back of the electrical box can be adjusted to reach the theoretical value.

[0041] Experiment 2:

[0042] After the millitrometer is calibrated, the excitation current is adjusted to a certain value, and the B display shows a certain value. At this time, the Hall current is changed so that the value of the Hall voltage display, except for the decimal point position, is the same as or differs by orders of magnitude from the display digits of the millitrometer. If practical application is required, only the decimal point position needs to be changed. The digit value of the Hall voltage display at this time can be determined as the digit value of the millitrometer, thus completing the design of the millitrometer.

[0043] Experiment 3:

[0044] Determine K H Place the probe at the center of solenoid coil 3;

[0045] Operating current I H =3.00mA, excitation current I M =0.6A magnetic field B0 has been read as magnetic field strength.

[0046] According to the formula B0=μ O nI M ·L / (L 2 +D 2 ) 1 / 2 =V H / k H I M

[0047] Measuring Hall voltage V H Calculate K H ;

[0048] K H =V H / I H ·B O ;

[0049] Note: Measuring Hall voltage V H Measurements must be taken using the elimination method;

[0050] +I,+B,+U0, the measured voltage is V1;

[0051] -I,+B,-U0, the measured voltage is V2;

[0052] +I, -B, +U0, the measured voltage is V3;

[0053] -I,-B,-U0, the measured voltage is V4;

[0054] in:

[0055] V1, V2, V3, and V4 are displayed by Hall effect voltmeters;

[0056] +I means I H The reverse switch moves upwards, and vice versa, it moves downwards, resulting in -I;

[0057] +U0 represents V H The reverse switch moves upwards, and vice versa, it moves downwards, which is -U;

[0058] +B represents I M When the reverse switch moves upward, it moves downward, resulting in -B; B represents the internal magnetic field of solenoid coil 3.

[0059] The Hall voltage can be measured by obtaining the algebraic average value from the four equations above.

[0060] Experiment 4:

[0061] Measurement V H ~X value, and simultaneously measure B~X value (operating current I). H =3.00mA, excitation current I M =0.6A)

[0062] X takes values ​​of 0, 1, 2, 3, ... 29, 30 (cm). It is understood that the values ​​can be adjusted according to actual needs.

[0063] Within a large area of ​​the middle of the solenoid coil 3, V H The readings remain almost unchanged, so fewer measurements can be taken. The readings begin to change as the tube approaches the end, and then gradually decrease rapidly. Therefore, more detailed measurements should be taken at the tube end.

[0064] Draw a complete B-X curve and correctly mark the positions of the two pipe ends on the graph;

[0065] Experiment 5:

[0066] Mapping the V of the Hall sensor H -I H Keeping the Hall sensor probe at the center of solenoid coil 3, the excitation current I M =0.6A Hall operating current I H For each selected I, use 0.5, 1, 1.5, 2, 2.5, and 3 mA. H Change I sequentially M I H For each direction, record the corresponding V1, V2, V3, and V4 in Table 1, and calculate each V.H And draw V H —I H curve.

[0067] The novel Hall effect experimental instrument using the above implementation scheme achieves high integration, simplified testing procedures, and ease of verification and learning.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of Hall effect experiment instrument suitable for use, comprising a box (1) and an electric box (13), the box (1) is electrically connected with the electric box (13), characterized in that: The top of the housing (1) is provided with a working plate (9), on which a coil frame (2), a terminal block (10) and a double-pole double-throw switch (11) are provided. A solenoid coil (3) is wound on the coil frame (2). A transparent engraved indicator sleeve (4) is installed on the right side of the coil frame (2). A sensor moving rod (6) is inserted inside the transparent engraved indicator sleeve (4). An indicator engraved line (5) is provided on the transparent engraved indicator sleeve (4). The terminal block (10) is connected to the double-pole double-throw switch (11) by a wire, and the work plate (9) is provided with a Connie seat (12) which is connected to the double-pole double-throw switch by a wire.

2. The novel Hall effect experiment apparatus for use according to claim 1, characterized in that: A sensor base (601) is installed inside the sensor moving rod (6). A Hall sensor (602) and a millitrometer sensor (603) are installed on the sensor base (601). The millitrometer sensor (603) is located to the left of the Hall sensor (602). A sensing cover (604) is installed at the left end of the sensor moving rod (6). The sensing cover (604) abuts against the millitrometer sensor (603).

3. The novel Hall effect experiment apparatus for use according to claim 2, characterized in that: The right end of the sensor moving rod (6) is equipped with a millitr connector (7) and a Hall sensor connecting line (8).

4. The novel Hall effect experiment apparatus for use according to claim 3, wherein: The bottom of the box (1) is provided with a foot (101), and a connecting nail (102) is installed on the box (1). The connecting nail (102) fixes the coil frame (2) to the working plate (9) of the box (1).

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