Ampere force measuring device

Abstract

The present invention discloses an Ampere force measurement device, comprising: a support on which a vertical pole and a force sensor are mounted; a crossbar rotatably mounted at the end of the vertical pole; the crossbar on one side of the vertical pole is connected to the force-measuring end of the force sensor; a uniform magnetic field assembly is mounted on the other end of the crossbar; and an adjustable flexible coil is mounted below the uniform magnetic field assembly. The present invention effectively eliminates the error caused by the force applied by the connecting wires by measuring the force applied to the magnet instead of measuring the force applied to the wires. The principle behind this measurement is the relationship between action and reaction force. The adjustable flexible coil and uniform magnetic field are arranged on one side of the crossbar, while the force sensor is arranged on the other side. The use of a lever structure increases the variation in the force sensor's reading.

Description

Technical Field

[0001] The invention relates to an experimental device, in particular to an Ampere force measuring device. Background Art

[0002] The experimental principle of Ampere force is: in a uniform magnetic field, when the current-carrying conductor is perpendicular to the direction of the magnetic field, the Ampere force F exerted on the current is equal to the product of the magnetic induction intensity B, the current I and the length L of the current-carrying part of the conductor.

[0003] Devices for measuring Ampere force exist in the existing technology, but they suffer from the following major drawbacks: Because the Ampere force is small, the force exerted by the wire on the wireframe can cause errors; the force applied to the wireframe as a whole, rather than to a single straight wire, is measured, requiring students to undergo a certain degree of conversion to understand the measurement. Furthermore, when studying the relationship between the Ampere force and the length of the current-carrying wire, only two values ​​can be measured by changing the wireframe's orientation horizontally or vertically, rather than varying the length of the current-carrying wire.

[0004] Therefore, the present invention is dedicated to providing a device that can perform demonstration more intuitively. Summary of the Invention

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0006] An Ampere force measuring device, comprising: a vertical pole and a force sensor are mounted on a support, a cross bar is rotatably mounted on the end of the vertical pole, the cross bar on one side of the vertical pole is connected to the force measuring end of the force sensor, a uniform magnetic field assembly is mounted on the end of the cross bar on the other side, and an adjustable flexible coil is mounted below the uniform magnetic field assembly.

[0007] The Ampere force measuring device as described above, wherein the adjustable flexible coil includes: a coil mounted on a base, and also includes: a power supply, a sliding rheostat, and a current sensor. The coil, the power supply, the sliding rheostat, and the current sensor are connected in series to form a closed loop.

[0008] In the Ampere force measuring device as described above, the uniform magnetic field comprises: a mounting slot with a downward opening; a plurality of permanent magnets mounted on the inner wall of the mounting slot; and the coil extending into the mounting slot.

[0009] In the Ampere force measuring device as described above, a U-shaped piece is installed on the upper portion of the mounting groove, a plurality of through holes are opened on the cross bar, and a fixing screw thread passes through the U-shaped piece and one of the through holes.

[0010] The Ampere force measurement device as described above, wherein the force sensor is connected to a data collector.

[0011] In the Ampere force measuring device as described above, a counterweight is installed on one end of the cross bar connected to the force sensor; and the vertical bar is a telescopic bar.

[0012] As described above, the Ampere force measuring device, wherein the end of the vertical rod has two protrusions, bearings are installed in the two protrusions, the two ends of the rotating shaft are installed on the inner edges of the two bearings, and the middle part of the rotating shaft is fixed on the cross bar.

[0013] In the Ampere force measuring device as described above, a plate is mounted on the base, and the coil is mounted on the plate.

[0014] The Ampere force measuring device as described above, wherein, further comprises: two U-shaped buckles, wherein the two U-shaped buckles are mounted on the coil.

[0015] As described above, the Ampere force measuring device, wherein the plate body is provided with a plurality of strip-shaped openings matching the U-shaped buckles, two of the U-shaped buckles are mounted on the strip-shaped openings, and the coil between the upper ends of the two U-shaped buckles is straightened.

[0016] To sum up, due to the adoption of the above technical solution, the present invention effectively eliminates the error caused by the force of the connecting wire, and changes the measurement of the force change of the wire to the measurement of the force change of the magnet. The principle is the relationship between the action force and the reaction force. The adjustable flexible coil and the uniform magnetic field are arranged on one side of the cross bar, and the force sensor is arranged on the other side. The lever structure is used to increase the reading change of the force sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the Ampere force measuring device of the present invention;

[0018] Figure 2 The utility model relates to an adjustable flexible coil of the Ampere force measuring device of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of the Ampere force measuring device of the present invention, see Figure 1An Ampere force measurement device includes: a support 1, on which is mounted an upright pole 2 and a force sensor 9; a crossbar 3 rotatably mounted at the end of the upright pole 2; a crossbar 3 positioned on one side of the upright pole 2 connected to the force-measuring end of the force sensor 9; a uniform magnetic field assembly mounted on the other end of the crossbar 3; and an adjustable flexible coil mounted below the uniform magnetic field assembly. The present invention is based on the relationship between action and reaction forces. The device utilizes a lever structure. By adjusting the adjustable flexible coil, the uniform magnetic field force is changed. The force applied to the current-carrying conductor in the adjustable flexible coil within the uniform magnetic field is measured, and the force sensor 9 can intuitively obtain the change in value. The lever structure also amplifies the effect of the Ampere force change.

[0021] Specifically, due to the adoption of the technical solution of the present invention, both I and L in the formula F=IBL can be controlled to take multiple values ​​for research, while in the past, only I could be changed and L could only take two values.

[0022] Furthermore, the adjustable flexible coil includes a coil 13 mounted on a base 15, a power supply 12, a sliding rheostat 11, and a current sensor. The coil 13, power supply 12, sliding rheostat 11, and current sensor are connected in series to form a closed loop. A coordinate system can be established using the coefficient displayed by the current sensor and the reading displayed by the force sensor 9 to obtain a relationship between the two.

[0023] Specifically, the power supply may be a student power supply commonly used in the prior art.

[0024] Furthermore, the uniform magnetic field comprises: a mounting slot 7 with a downward opening; a plurality of permanent magnets 8 mounted on the inner wall of the mounting slot 7; and a coil 13 extending into the mounting slot 7. The permanent magnets 8 are made of neodymium nickel magnets, which generate a high-intensity uniform magnetic field.

[0025] Furthermore, a U-shaped piece 6 is installed on the upper portion of the mounting groove 7 , and a plurality of through holes 5 are opened on the cross bar 3 , and the fixing screw thread passes through the U-shaped piece 6 and a through hole 5 .

[0026] Furthermore, the force sensor 9 is connected to the data collector 10 .

[0027] Specifically, the current sensor, force sensor 9 and data collector 10 used in the present invention all adopt the Longway brand digital information system (DIS) related kit. The concept of DIS has been disclosed in high school physics textbooks.

[0028] Furthermore, a counterweight 4 is mounted on one end of the crossbar 3 connected to the force sensor 9, and the vertical rod 2 is a telescopic rod. In the specific implementation of the present invention, the height of the telescopic rod can be adjusted to position the conductive coil 13 in the center of the magnetic field, and the width of the coil 13 can be adjusted and recorded.

[0029] Furthermore, the end of the vertical rod 2 has two protrusions, and bearings are installed in both protrusions. The two ends of the rotating shaft are installed on the inner edges of the two bearings, and the middle of the rotating shaft is fixed on the crossbar 3. In order to reduce the system error, a bearing structure is adopted at the rotating shaft.

[0030] Furthermore, a plate is mounted on the base 15 , and the coil 13 is mounted on the plate.

[0031] Furthermore, it also includes: two U-shaped buckles 14, and the two U-shaped buckles 14 are installed on the coil 13.

[0032] Furthermore, the plate body is provided with a plurality of strip-shaped openings 16 that match the U-shaped buckles 14. Two U-shaped buckles 14 are mounted on the strip-shaped openings 16, and the coil 13 between the upper ends of the two U-shaped buckles 14 is straightened. The two U-shaped buckles 14 can be buckled at different positions to adjust the length of the straightened portion of the coil 13, that is, to adjust L in the formula F=IBL. The straightened portion of the coil 13 can be placed in the middle of the uniform magnetic field assembly.

[0033] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without requiring creative effort or software programming. Therefore, any technical solution that can be derived by a person skilled in the art or a general model enthusiast based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the prior art should be within the scope of protection defined by the claims.

Claims

1. An Ampere force measuring device, characterized in that: include: A vertical pole and a force sensor are installed on the support, and a cross bar is rotatably installed at the end of the vertical pole. The cross bar on one side of the vertical pole is connected to the force measuring end of the force sensor, and a uniform magnetic field component is installed at the end of the cross bar on the other side. An adjustable flexible coil is installed below the uniform magnetic field component; a counterweight is installed at the end of the cross bar on the side connected to the force sensor; The vertical pole is a telescopic pole; The adjustable flexible coil includes: a coil mounted on a base, a power supply, a sliding rheostat, and a current sensor, wherein the coil, the power supply, the sliding rheostat, and the current sensor are connected in series to form a closed loop; A plate is mounted on the base, and the coil is mounted on the plate; It also includes: two U-shaped buckles, the two U-shaped buckles are installed on the coil; The plate body is provided with a plurality of strip openings matching the U-shaped buckles, two of the U-shaped buckles are mounted on the strip openings, the coil between the upper ends of the two U-shaped buckles is straightened, and the straightened portion of the coil is placed in the middle of the uniform magnetic field assembly.

2. The Ampere force measuring device according to claim 1, characterized in that The uniform magnetic field comprises: a mounting slot, the mounting slot opening is downward; a plurality of permanent magnets are mounted on the inner wall of the mounting slot; and the coil extends into the mounting slot.

3. The Ampere force measuring device according to claim 2, characterized in that A U-shaped piece is installed on the upper part of the installation groove, and a plurality of through holes are opened on the cross bar. The fixing screw thread passes through the U-shaped piece and one of the through holes.

4. The Ampere force measuring device according to claim 1, characterized in that The force sensor is connected to a data collector.

5. The Ampere force measuring device according to claim 1, characterized in that: The end of the vertical rod is provided with two protrusions, and bearings are installed in the two protrusions. The two ends of the rotating shaft are installed on the inner edges of the two bearings, and the middle part of the rotating shaft is fixed on the cross bar.

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