CN211787799U

CN211787799U - Ampere force quantitative experiment device

Info

Publication number: CN211787799U
Application number: CN202020741348.7U
Authority: CN
Inventors: 康良溪
Original assignee: Fujian Tong'an No1 Middle School
Current assignee: Fujian Tong'an No1 Middle School
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-10-27
Anticipated expiration: 2030-05-08

Abstract

The utility model discloses an ampere force ration experimental apparatus, which comprises a coil, the electro-magnet, the carousel, a support, micro force sensor, current sensor, angle sensor and power, the support includes the base, set up in the rotating support seat of base top and the cantilever structure that is used for setting up micro force sensor, the carousel is installed on rotating support seat, two electro-magnets set up on the carousel and are connected with the power respectively, angle sensor sets up the rotation angle that is used for detecting the carousel in the support bottom, the one end of coil is hung in micro force sensor bottom and is placed in the centre of two electro-magnets in, a power supply, current sensor and coil establish ties and form first return circuit, the power forms the second return circuit with the electro. The utility model discloses an experimental apparatus measurement accuracy height, data are stable, accurateHigh in performance, comprehensively, quantitatively, intuitively and quickly measure the magnitude of the ampere force F and five related physical quantities (B, I)_lL, Sin theta, theta).

Description

Ampere force quantitative experiment device

Technical Field

The utility model relates to a physical experiment device to in particular to ampere force ration experimental apparatus.

Background

The research on the relationship between the Ampere force and each relevant physical quantity is an important experiment in high school physics teaching, which has clear requirements in the new course standard of the education department, and the enrollment examination description of the national common colleges and universities also requires the application of the Ampere force formula. This experiment is a problematic experiment. Exploring the Ampere force formula F-B I_lWithin LSin thetaCapacity: f ^ I when B, L, and theta are not changed_l(ii) a When I is_lF ^ B when L and theta are not changed; when B and I_lF ^ L when theta is unchanged; when B and I_lWhen L is constant, F is related to theta, and F is related to Sin theta. F-Ampere force, B-magnetic field strength, I_lCurrent intensity through the wire, L: cutting the effective length of the magnetic induction line, wherein theta is the included angle between the magnetic field direction and the current direction, and sin theta is the sine of the theta angle.

In the existing physical teaching equipment, although a lot of people want to research the comprehensive, quantitative, visual and fast measurement of the magnitude of the ampere force F and each related physical quantity (B, I)₁L, Sin theta and theta), but always has the problems of incomplete measurement and exploration contents, poor operation controllability and difficult popularization, and particularly has no experimental equipment for demonstrating the sine curve relationship between the ampere force F and the included angle theta between the current of a current-carrying conductor and the direction of a magnetic field with better controllability.

SUMMERY OF THE UTILITY MODEL

In order to solve the content of experiment among the prior art not comprehensive, the operation controllability is poor can not demonstrate the ampere force F betterly with the relation of electric current and the magnetic field direction contained angle theta of circular telegram conductor, the utility model provides an ampere force ration experimental apparatus for solve above-mentioned technical problem.

According to the utility model discloses an aspect provides an ampere force ration experimental apparatus, the device includes the coil, the electro-magnet, the carousel, a support, micro force sensor, current sensor, angle sensor and power, the support includes the base, set up in the rotating support seat of base top and be used for setting up micro force sensor's cantilever structure, the carousel is installed on rotating support seat, two electro-magnets set up on the carousel and are connected with the power respectively, angle sensor sets up the rotation angle that is used for detecting the carousel in the support bottom, the one end of coil is hung in micro force sensor bottom and is placed in the centre of two electro-magnets, a power supply, current sensor and coil series connection form first return circuit, the power forms the second return circuit with the electro-magnet. This experimental apparatus makes it can accomplish the ration experiment demonstration to ampere force through the ingenious setting of rotary disk, the coil of variable number of turns, realizes 360 degrees magnetic field rotations, need not to change the coil simultaneously, has greatly improved experimental efficiency.

Preferably, the coil is a variable-turn coil, and the variable-turn coil is a tapped coil and is provided with at least 4 taps. By means of the arrangement of the coil with the variable number of turns, the coil with the different number of turns can be tested through different taps, the trouble of frequently replacing the coil is avoided, and the experimental efficiency is improved.

Further preferably, the variable-turn coil comprises a square coil support, and the tap is arranged on one side of the coil support, on which the micro-force sensor is suspended. By means of the arrangement, experimenters can complete the switching of the number of turns of the coil more conveniently, and the interference of other equipment is avoided.

Preferably, a terminal is arranged on the rotary table and penetrates through the rotary table. The arrangement of the terminal post can facilitate the connection of the lead.

Preferably, the electromagnet is connected with the binding post through a conducting wire on the upper end face of the turntable, and the binding post on the lower end face of the turntable is connected with a power supply. The wiring terminal arranged on the bottom surface of the rotary table is connected with the power supply, so that a conducting wire and an electromagnet can be prevented from being wound when the rotary table rotates, and the experimental operation is not influenced.

Preferably, the N pole and the S pole of the two electromagnets on the rotating disk are opposite. By virtue of this arrangement the effectiveness of the magnetic field can be ensured.

Preferably, the power supply is an adjustable low-voltage digital display power supply and comprises a first power supply for supplying power to the first loop and a second power supply for supplying power to the second loop. The two power supplies are utilized to separately supply power to the two loops, so that the parameters of the two circuits can be conveniently and separately adjusted, and more different experimental projects can be realized.

Preferably, the rotary supporting seat is of a cross structure, a reinforcing part is arranged between two adjacent arms of the cross structure, the rotary table is fixed on the rotary supporting seat, a bearing is arranged at the center of the rotary supporting seat and connected with an angle sensor arranged in the middle of the base through a connecting rod, the cantilever structure is fixed on the base, and a clamp used for clamping the micro-force sensor is slidably arranged on the cantilever structure.

Further preferably, the angle sensor is a photoelectric angle sensor, and the connecting rod is connected with the photoelectric angle sensor and the bearing. Utilize the coaxial setting of photoelectricity angle sensor and bearing, can rotate in a flexible way, 360 degrees rotations, the angle information of acquisition carousel that can be accurate, guarantee experimental data's accuracy, stability and validity.

Preferably, the device further comprises a computer, and the current sensor, the angle sensor and the micro-force sensor are connected to the computer through signal wires. By means of the access of computer equipment, various parameters can be intuitively synchronized to the computer and then converted into corresponding experimental data charts, and the quantitative experiment on the ampere force is better realized.

The utility model discloses an ampere force ration experimental apparatus, there is following problem to the current ampere force ration experimental apparatus in present internal same field: (1) the structure of the instrument device is complex; (2) the stressed coil has single turn number, is troublesome to replace when used, and because the ampere force to be measured is very small, a micro-force sensor is selected for measurement, but the weight of the coil with the changeable turn number exceeds the measuring range of the micro-force sensor, which is a difficult problem troubling people for a long time; (3) the strength of the magnetic field is difficult to quantitatively control and adjust, if the electromagnet is selected for use to provide excitation, the controllability of the magnetic field strength is good, but when a rotating magnetic field is to be provided, a conducting wire for supplying power to the electromagnet is wound around the electromagnet to influence the experimental operation and the experimental measurement, so that a large number of people adopt a permanent magnet (such as rubidium ferroboron) to provide the magnetic field, and the qualitative or semi-quantitative experimental measurement is also realized although the magnetic field strength is changed by superposing one permanent magnet. At present, a device for providing a rotating magnetic field by using an electromagnet in China can only deflect at a small angle and can not rotate at 360 degrees, and a sinusoidal image (4) of the relation between the ampere force F and the current of a current-carrying conductor and the included angle theta of the direction of the magnetic field can not be drawn, because an angle sensor is difficult to install above a rotating disc, and the measurement accuracy can be influenced by the interference of the magnetic field if the magnetic angle sensor is used, the angle line can only be drawn on the disc loaded with the magnet for measuring the angle, the angle can only be manually recorded by means of visual reading during measurement, and the operation and data processing are troublesome, so that the problems that an angle measuring device is not accurate and poor in controllability, can not automatically acquire data and can not rotate at 360 degrees exist; (5) because the measured ampere force is very small, the micro-force sensor used for accurate measurement has high measurement accuracy and the stability of the measured data is realized, which is also a difficult problem; (6) incompleteness of experimental contents, and the like.

To the aforesaid there is a problem, the utility model provides a and implement the technical scheme of solution problem: (1) the rotatable turntable support is arranged, so that the problem that the structure of the device is complex and the direction of a magnetic field cannot be changed by 360 degrees is solved, and the problem that a data relation graph of an included angle theta between ampere force and the magnetic field is difficult to obtain is solved; (2) the coil with the variable number of turns is arranged, so that the technical problems that the stressed coil is single in number of turns and needs to be frequently replaced are solved, and the difficulty that the sum of the weight of the coil and the ampere force does not exceed the measuring range of the micro-force sensor in actual use is solved; (3) the electromagnet is arranged above the rotary disc, and a wire for supplying power to the electromagnet is designed to penetrate through the bottom of the disc from the upper side of the disc to be wired, so that the problem that the operation and experimental measurement are affected because the wire is wound around the electromagnet when the disc rotates is solved. Therefore, the electromagnet is selected to provide the adjustable power supply of the magnetic field and the digital display current voltage, and the technical problem that the magnetic field intensity is difficult to control and cannot be adjusted is solved; (4) the angle sensor is arranged at the bottom of the rotating disc, and the rotating shaft rotates synchronously with the disc, so that the problem that the angle sensor is not arranged at a proper position above the disc is solved; (5) the photoelectric angle sensor and the micro-force sensor solve the technical problems of insufficient precision and poor controllability of the force measuring device and the angle measuring device; (6) designing the presentation mode of the experimental result, namely, automatically processing and acquiring data and automatically generating images and the like by a computer, and presenting data, images, equations and correlation coefficients on a computer interface, so that the intuition and the scientificity are good; (7) finally, the relation between the ampere force and the related physical quantity is comprehensively, quantitatively, intuitively and quickly measured through data and image output of a computer.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 is a perspective view of an amperometric assay device according to an embodiment of the present invention;

fig. 2 is a schematic view of a bracket according to a specific embodiment of the present invention;

fig. 3 is a graph of ampere force versus magnetic field strength data obtained using an ampere force quantification test apparatus in accordance with a particular embodiment of the present invention;

fig. 4 is a graph of ampere force versus conductor current data obtained using an ampere force quantification experimental apparatus in accordance with a particular embodiment of the present invention;

fig. 5 is a graph of ampere force versus conductor length data obtained using an ampere force quantification experimental apparatus in accordance with a particular embodiment of the present invention;

fig. 6 is a graph of ampere force versus magnetic field angle theta data obtained using an ampere force quantification testing apparatus, in accordance with a particular embodiment of the present invention;

fig. 7 is a graph of ampere force versus sin θ data obtained using an ampere force quantification experimental apparatus, in accordance with a specific embodiment of the present invention.

Description of the reference numerals: 1. a support; 2. rotating the supporting seat; 3. rotating the disc; 4. an electromagnet; 5. a force-bearing coil; 6. a force measuring device; 7. a force measuring device support; 8. an angle sensor; 9. a power source; 10. and (4) a computer.

Detailed Description

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as "top," "bottom," "left," "right," "up," "down," etc., is used with reference to the orientation of the figures being described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized and logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

Fig. 1 shows a perspective view of an ampere-force quantitative experimental apparatus according to an embodiment of the present invention. As shown in fig. 1, the apparatus comprises. The device comprises a support 1, a turntable 3, an electromagnet 4, a coil 5, a force measuring device 6, a force measuring device support 7, an angle sensor 8, a power supply 9 and a computer 10. Wherein, be provided with rotatable rotation supporting seat 2 on the support 1, on rotation disk 3 was fixed in rotation supporting seat 2, electro-magnet 4 was fixed to be set up in the up end of rotation disk 3, and the N utmost point and the S utmost point cross phase of two electro-magnets 4 are relative to form complete magnetic field. The force measuring device 6 is fixed on a force measuring device support 7, and the coil 5 is suspended below the force measuring device 6 and is arranged in a magnetic field formed between the two electromagnets 4. The angle sensor 8 is arranged at the bottom of the support 1 and is connected with the rotary supporting seat 2 through a connecting rod to obtain the rotation angle of the turntable 3. Two groups of power supplies 9 are also arranged and are respectively used for supplying power to the electromagnet 4 and the coil 5, and the electric power meter further comprises a current sensor, and the current sensor, the force measuring device 6 and the angle sensor 8 are connected to a computer 10 to be used for converting data into a chart. The rotating disk 3 is used for bearing the electromagnet 4, the rotating disk can flexibly rotate by 360 degrees, the angle sensor 8 automatically acquires angle data, the controllability is good, and an F and theta sine curve relation image can be quickly and completely fitted by using a computer.

Continuing to refer to fig. 2, fig. 2 shows the schematic diagram of the support of a specific embodiment of the utility model, as shown in fig. 2, support 1 adopts stainless steel square tube welding to form, the up end is "field" font structure, assist and form the major structure of support 1 with four stabilizer blades, it is specific, stainless steel square tube specification is 3cm, "field" font structure's length of side is 35cm, the stabilizer blade height is 15cm, this support 1's simple structure, high stability, the volume is also less, can form through welding or bolted connection's mode equipment. It should be appreciated that the above dimensions can be selected from other suitable dimensions and configurations according to the requirements of the actual experimental device, and the technical effects of the present invention can be achieved as well.

In the preferred embodiment, the rotary disk 3 is a wooden disk, the rotary disk 3 is fixed on the rotary supporting seat 2 in a bolt connection mode, the specification is 35cm in diameter and 1cm in thickness, the wooden disk can reduce the weight of the device and is convenient to disassemble and assemble, meanwhile, the strength requirement can be met, and the electromagnet 4 can be supported. Alternatively, the rotating disc 3 can be made of other materials or structures besides being a wooden disc, for example, an acrylic disc or an oval disc, and the technical effects of the present invention can be achieved.

In specific embodiment, rotary disk 3 is provided with two terminals, the terminal runs through rotary disk 3, a connection power supply for electro-magnet 4, up end electro-magnet 4 at rotary disk 3 passes through the wire and is connected with the terminal, and the terminal of terminal surface is connected with power 9 down, the wire length that the terminal of specific lower terminal surface is connected with power 9 is set up and is satisfied when the disc is rotatory 360 degrees, this wire can twine between spin support seat 2 and support 1, can not influence the rotation, also can not be dragged the fracture, the whole rotation of disc is nimble, it is light freely. The length of the middle lead of the utility model is 80 cm. The device solves the problem that the rotation of 360 degrees can not be realized because the deflection of a small angle can be realized for a long time.

In a specific embodiment, the structure of the rotary support base 2 is a cross structure, and a reinforcing part is further disposed between two adjacent sides to reinforce the supporting capability of the rotary disk 3, so as to avoid the occurrence of the situation that the rotary disk 3 falls down due to the excessive weight of the electromagnet 4. The end part of the cross-shaped structure is provided with a fixing hole corresponding to the rotating disc 3 for fixing the rotating disc 3 on the rotating support seat 2, and the center of the bottom of the cross-shaped structure is provided with a bearing, so that the rotating support seat 2 can stably rotate above the support 1. Alternatively, the structure of the rotary bearing seat 2 may be other support structures besides the cross structure, such as a "tian" structure, and the like, and the effect of supporting rotation can also be achieved.

In a specific embodiment, the rotating diameter of the rotating support base 2 and the rotating diameter of the rotating disc 3 are smaller than the side length of the upper end face of the bracket 1, so that interference of the rotating disc 3 and the rotating support base 2 on the cantilever structure 7 during rotation is avoided, and 360-degree rotation cannot be realized.

In a specific embodiment, the coil 5 is a coil with variable turns, specifically, a tapped coil with variable turns is adopted, a square coil support is made of a thin acrylic plate, the size of the coil support is about 6cm × 13cm, the coil wound on the same support is divided into four groups, namely 100 turns, 200 turns, 300 turns and 400 turns, each group is led out with one terminal, the head and the tail of each group are provided with five taps, the five taps of the coil are concentrated above the coil 5 and are consistent with the suspension direction, and the electromagnet 4 and the rotating disk 3 cannot be influenced to be touched when rotating. The coil-replacing time can be saved by adopting the tapped coil with the number of turns, if one bracket independently winds one group of coils, the coils need to be replaced when an experiment is carried out no matter whether the independent coils are three groups or four groups, and thus, the coil-replacing time is troublesome and wasted. The utility model discloses five taps of coil design have four group's data during the experiment, and the graph line of tracing the relevant physical quantity relation of point fitting is just more scientific. The coil of same support preparation, other people's research generally does not exceed the coil of three groups different turns in domestic, because the group is many can relate to coil weight and exceed the force transducer range, and three groups of experimental data are drawn a dot and are drawn its scientific nature and lack a little relatively.

In a specific embodiment, if the number of turns and the number of groups of the coil are large, the weight of the whole coil is larger, whether the weighing range of the force measuring device 6 is exceeded or not needs to be judged, if the precision of the force measuring device 6 is higher, the weighing range is smaller, and the weight of the manufactured coil cannot be larger. As a quantitative experiment, if the measurement precision is higher, the requirements on the stability and accuracy of data are higher, and the difficulty of manufacturing the whole instrument is higher; otherwise the difficulty is low. Because more groups are provided, more data points are measured, and the depicting image is relatively accurate and scientific. According to the utility model discloses the applicant's a lot of experimental verification adopts 4 groups of coils can be in the requirement of the assurance experiment data point of maximize, keeps force measuring device 6's high accuracy requirement.

In a preferred embodiment, the force measuring device 6 is a micro force sensor with a precision of 0.001N, which can improve the measurement precision, and thus the obtained experimental result is more accurate and scientific. It should be realized that to the not high scene of experiment precision requirement, can select the measuring force device of other precision, the number of turns of coil 5 can increase or reduce in the same way, can realize equally the utility model discloses a technical effect.

In a preferred embodiment, the power supply 9 is an adjustable low-voltage digital display current and voltage power supply, the current sensor and the coil are connected in series to form a first loop, the power supply and the electromagnet form a second loop, and the two separately arranged adjustable low-voltage digital display power supplies can separately control the two loops, so that different changes of current and magnetic field intensity are realized, and parameters of different experimental projects are realized.

In a preferred embodiment, the angle sensor 8 is a photoelectric angle sensor, and compared with a common magnetic angle sensor, the photoelectric angle sensor is not affected by a magnetic field during an experiment, and an obtained angle is more accurate. The angle sensor 8 is installed in the bottom center of the support 1 and is coaxially arranged and connected with the bearing through a connecting rod, so that the angle sensor can synchronously rotate with the rotary disk 3 and the rotary supporting seat 2, the rotation angles of the rotary disk 3 and the rotary supporting seat 2 can be synchronously obtained, and the rotation angle can be automatically obtained in real time on the signal line transmission value computer 10 without drawing angle lines on the rotary disk or manually recording angle data.

In a preferred embodiment, the electromagnet 4 is an electromagnet with a power of 300W, and compared with a permanent magnet (such as rubidium ferroboron), the controllability of the magnetic field intensity of the electromagnet 4 is better, and a graduated scale or other auxiliary accessories are not needed.

Based on above-mentioned experimental apparatus, table 1 shows the experiment content that the ampere force quantitative experiment device of an embodiment of the utility model can go on for verify the relation of each item parameter in the computational formula of ampere force:

table 1:

ampere force formula F ═ BI_lLSinθ

F-Ampere force, B-magnetic field strength, I_lCurrent intensity through the wire, L: cutting the effective length of the magnetic induction line, wherein theta is the included angle between the magnetic field direction and the current direction, and sin theta is the sine of the theta angle.

Exploring Ampere force formula F ═ BI_lLSin θ content:

when B, L and theta are not changed, F is not equal to I_l；

When I_lF ^ B when L and theta are not changed;

(iii) when B, I_lF ^ L when theta is unchanged;

when B, I_lWhen L is constant, F is related to theta, and F is related to Sin theta.

FIG. 3 is a graph showing the relationship between the ampere force and the magnetic field intensity obtained by the ampere force quantitative experimental device according to a specific embodiment of the present invention, as shown in FIG. 3, when I_lWhen L and theta are not changed, the above experimental device can be used to intuitively explore the proportional relationship between F and B (for B: (KI)_BExploration of F ^ I-_B)。

Fig. 4 shows a data relationship diagram of the ampere force and the conductor current obtained by the ampere force quantitative experimental device according to a specific embodiment of the present invention, as shown in fig. 4, when B, L, and θ are not changed, F and I can be intuitively explored by using the experimental device_lIs in direct proportion.

FIG. 5 is a graph showing the relationship between the ampere force and the length of the conductor obtained by the ampere force quantitative experimental device according to a specific embodiment of the present invention, as shown in FIG. 5, when B, I_lWhen theta is unchanged, the proportional relation between F and L can be intuitively explored by using the experimental device.

Especially, probe into the relation experiment of F and theta, the utility model discloses utilize 360 degrees rotations of rotary disk, directly fit out the sinusoidal image of F and theta at computer software. FIG. 6 shows a view of the present inventionIn a specific embodiment, a data relation graph of an ampere force and a magnetic field included angle theta is obtained by using an ampere force quantitative experimental device, as shown in fig. 6, when B and I are_lWhen L is unchanged, the relation between F and theta is researched, and the experimental phenomenon is as follows: firstly, a sinusoidal graph is visualized, when the direction of a magnetic field is parallel to the direction of current, F is zero, and when the direction of the magnetic field is vertical to the direction of current, the value of F is maximum; secondly, an included angle theta between the ampere force F and the magnetic field direction and the current direction is directly given on a textbook, and then the relation between the F and the theta is deduced by a mathematical method. And the demonstration of the experimental device of the utility model can visually find out that F and theta form a sinusoidal relation. And thirdly, the magnitude of the ampere force F corresponding to any angle theta can be obtained through the sine curve image, including the change of the direction of the ampere force F.

FIG. 7 is a graph showing the relationship between the Ampere force and sin θ data obtained by the Ampere force quantitative experiment device according to a specific embodiment of the present invention, as shown in FIG. 7, when B, I_lAnd when L is not changed, the proportional relation between F and sin theta can be explored by using the experimental device.

Quantitative experiments explored conclusions: the ampere force is in direct proportion to the sine value of the magnetic field intensity, the conductor current, the conductor length, the current and the magnetic field included angle, and F is obtained when all the physical quantities are international units_An＝BI_lLSin θ. Using the above experimental setup, the teacher explained the Ampere force and B, I_lL, Sin theta, theta are very easy to quantify. The students have a perceptual knowledge of the experimental results, which is very helpful for the students to understand and master the formula of the ampere force.

The experimental device of the utility model can comprehensively, quantitatively, visually and rapidly measure the magnitude of the ampere force F and the relative physical quantity (B, I)_lL, Sin theta, theta) of (a) and (b) of (b) B, I_lL, Sin theta and theta are in a relationship, data are processed by computer software, and a 'table data + image + equation + correlation coefficient' is quickly presented on a computer screen, so that compared with the prior art, the experiment is more perfect, and the operation is more controllable; especially demonstrate the experiment of ampere force F and circular telegram conductor's electric current and magnetic field direction contained angle theta sinusoidal relation, the utility model relates to a rotary disk bears the weight of the electro-magnetThe photoelectric angle sensor can flexibly rotate by 360 degrees, automatically acquires angle data, has good controllability, and can quickly and completely fit an F and theta sine curve relation image by a computer, thereby solving the difficult experiment problem which is wanted to be solved for a long time. The method has the advantages of simple experimental equipment, clear demonstration target, and intuitive phenomenon, data and image.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit and scope of the invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps than those listed in a claim. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. The utility model provides an ampere force ration experimental apparatus, its characterized in that, includes coil, electro-magnet, carousel, support, micro force sensor, current sensor, angle sensor and power, the support include the base, set up in the rotation supporting seat of base top and be used for setting up micro force sensor's cantilever structure, the carousel install in on the rotation supporting seat, two the electro-magnet set up in on the carousel and respectively with the power is connected, angle sensor set up in the support bottom is used for detecting the rotation angle of carousel, the one end of coil hang in micro force sensor bottom and place in two the centre of electro-magnet, the power, current sensor with the coil is established ties and is formed first return circuit, the power with the electro-magnet forms the second return circuit.

2. An ampere force quantitative experiment device according to claim 1, wherein the coil is a variable-turn coil, the variable-turn coil is a tapped coil, and at least a tap with 4 turns is arranged on the variable-turn coil.

3. An ampere-force quantitative experiment device according to claim 2, wherein the coil with the variable number of turns comprises a square coil support, and the tap is arranged on one side of the coil support, on which the micro-force sensor is suspended.

4. An ampere-force quantitative test device according to claim 1, wherein a terminal is arranged on the turntable and penetrates through the turntable.

5. An ampere force quantitative experiment device according to claim 4, wherein the electromagnet and the terminal are connected through a conducting wire at the upper end face of the turntable, and the terminal at the lower end face of the turntable is connected with the power supply.

6. An ampere force quantifying experimental device according to claim 1 or 5, wherein N poles and S poles of two electromagnets on the rotating disc are opposite.

7. The ampere-power quantitative experimental device according to claim 1, wherein the power supply is an adjustable current-voltage digital display power supply and comprises a first power supply for supplying power to the first loop and a second power supply for supplying power to the second loop.

8. An ampere force quantitative experiment device according to claim 1, wherein the rotation support base is a cross structure, a reinforcement portion is disposed between two adjacent arms of the cross structure, the turntable is fixed on the rotation support base, a bearing is disposed at the center of the rotation support base and is connected to the angle sensor disposed at the middle of the base through a connecting rod, the cantilever structure is fixed on the base, and a clamp for clamping the micro force sensor is slidably disposed on the cantilever structure.

9. An ampere-force quantitative experiment device according to claim 8, wherein the angle sensor is a photoelectric angle sensor, and the connecting rod connects the photoelectric angle sensor and the bearing.

10. The ampere force quantitative experiment device according to claim 1, further comprising a computer, wherein the current sensor, the angle sensor and the micro force sensor are connected to the computer through data acquisition device signal lines.