CN101055676A - Electromagnetic induction integration experimental device and its manufacturing method - Google Patents
Electromagnetic induction integration experimental device and its manufacturing method Download PDFInfo
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- CN101055676A CN101055676A CN 200610169170 CN200610169170A CN101055676A CN 101055676 A CN101055676 A CN 101055676A CN 200610169170 CN200610169170 CN 200610169170 CN 200610169170 A CN200610169170 A CN 200610169170A CN 101055676 A CN101055676 A CN 101055676A
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- electromagnetic induction
- permanent magnet
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Abstract
The invention discloses an electromagnetic induction comprehensive experiment device capable of obtaining and recording all information of an electromagnetic induction process to be analysed and studied. A cylindrical permanent magnet (1) used by the device passes through a guide tube (3) upright fixed on a special bracket (4) and free falls to a magnet adsorption pad (5) by gravitation; two multi-tap induction coils (2) provided outside the guide tube and capable of moving up and down transmits all changing processes of an induced electromotive force, which is generated when the cylindrical permanent magnet (1) passes, to two passages of a digital storage oscillograph (6) to be displayed and stored. The invention also discloses a manufacturing method of the special bracket and the multi-tap induction coils. The device has a simple structure, is convenient to operate, realizes measurement of physical quantities such as gravity, magnetic force and the like while quantification-studying Faraday's law of electromagnetic and Lenz's law.
Description
Technical field
The present invention relates to a kind of electromagnetic induction experiment device, especially the electromagnetic induction integration experimental device of forming by magnet, coil.The invention still further relates to the manufacture method of many tapped inductors of electromagnetic induction integration experimental device and special stand.
Background technology
Electromagnetic induction phenomenon is one of discovery the most great in the electromagnetics, and it has disclosed the importance that electricity and magnetic connect each other and transforms, and its discovery is on science and technically all have an epoch making significance.Faraday was through the meticulous experimental study in 10 years, and found electromagnetic induction phenomenon for the first time in 1831, and summed up Faraday's electromagnetic induction law: the size of induction electromotive force is directly proportional with the rate of change of the magnetic flux that passes the loop in the conductor circuit.1834, Lenz proposed to judge the method for inductive current direction: faradic direction in the closed-loop path, and always make the magnetic field that it excited stop the variation that causes faradic magnetic flux, this conclusion is called Lenz law.How to adopt method easily and simple device to obtain and the full detail of record electromagnetic induction process for people's analysis and research, be the target that the scientific worker explores and pursues always.
The patent search system that utilizes Patent Office of State Intellectual Property Office of the People's Republic of China to be provided is retrieved such invention comprehensively, and the document that patents is as follows:
1. (publication number: CN2033530 is day openly: 1989.03.01) for the electromagnetic induction experiment device, this utility model is the original manual cutting magnetic line of using, change over the action of gravity cutting magnetic line, and form closed circuit, permanent magnet is made into electromagnet with two-orbit, roller and ammeter.This device can only be seen the swing of meter pointer, the quantitative relationship between each can't the verifying electromagnetic induction related physical quantity.
2. (publication number: CN2535877 is day openly: 2003.02.12) for a novel electromagnetic induction experiment utensil, it mainly comprises one on a support that links to each other with the motor rotating rosette that links to each other with described support, also have a swinging mounting that links to each other with described support, upper and lower magnet is installed on described swinging mounting.What this utility model was verified is the electromagnetic damping effect.
3. (open day of publication number: CN2686011: 2005.03.16), this utility model is made of U type magnet, coil, support, base plate, reometer the electromagnetic induction experiment device.Traversing carriage, coil cutting magnetic line, reometer shows electric current.Still can't accurately measure the quantitative relationship between the electromagnetic induction phenomenon.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of electromagnetic induction integration experimental device that can obtain and write down the full detail of electromagnetic induction process for people's analysis and research.
The technical solution adopted for the present invention to solve the technical problems is:
Cylindrical permanent magnet under action of gravity, pass be fixed on the special stand and upright conduit free-falling to the magnet absorption layer; Be fixed on the outer tapped inductor more than two of conduit cylindrical permanent magnet is passed to two passages of digital storage oscilloscope for its demonstration and storage through whole change procedures of the out-of-date induction electromotive force that produces.
Special stand used in the present invention is a hollow structure, can guarantee that cylindrical permanent magnet passes pedestal and falls to ground; Three foundation bolts are used to regulate the vertical of conduit; The cover tube outside of A/C adopts welding method to install two tight loops additional, is provided with holding screw and cylindrical rubber pad above the tight loop.
Many tapped inductors used in the present invention have adopted single enameled wire to twine in the wire casing of skeleton and are equating the winding method of number of turn place tap, each tap by the Wire channel in building on the skeleton around below patching panel, being welded on the probe.Upper surface spraying or the printed coil symbol and the numeral of patching panel, the method that adopts melt glued or screw to fix with skeleton is integrated.In order to spur many tapped inductors up and down, skeleton also is furnished with cylindrical rubber pad and friction force adjusting screw.
The invention has the beneficial effects as follows: simple in structure, easy to operate, can in quantitative research Faraday's electromagnetic induction law and Lenz law, realize measurement to physical quantitys such as gravity, magnetic force.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the system architecture synoptic diagram of electromagnetic induction integration experimental device of the present invention;
Fig. 2 is the structural representation of electromagnetic induction integration experimental device special stand of the present invention;
Fig. 3 is many tapped inductors of electromagnetic induction integration experimental device structural representation of the present invention;
Fig. 4 and Fig. 5 are the skeleton and the patching panel synoptic diagram of many tapped inductors shown in Figure 3;
Fig. 6 to Fig. 8 has described the pairing display result of several using method of electromagnetic induction integration experimental device of the present invention respectively.
Embodiment
In electromagnetic induction integration experimental device shown in Figure 1, cylindrical permanent magnet 1 under action of gravity, pass be fixed on the special stand 4 and upright conduit 3 free-fallings to magnet absorption layer 5.Be arranged on conduit 3 outer tapped inductors 2 more than two cylindrical permanent magnet 1 is passed to two passages of digital storage oscilloscope 6 for its demonstration and storage through whole change procedures of the out-of-date induction electromotive force that produces.Conduit 3 is selected glass tube, copper pipe, aluminum pipe or stainless-steel tube for use according to the difference of experiment content, and the external diameter of conduit 3 is 15 millimeters, and internal diameter is 12 millimeters, and length is 1-1.5 rice, is convenient to people's operation of differing heights.The diameter of cylindrical permanent magnet 1 is 10 millimeters, and length is the 10-20 millimeter, and oversize meeting makes the positive and negative alternately place of induction electromotive force produce long-time zero-signal.The magnet absorption layer 5 that special stand 4 is placed below is bonded by rubber and iron plate, and its effect is to make cylindrical permanent magnet 1 realize " soft landing ".
Fig. 2 is the structural representation of electromagnetic induction integration experimental device special stand of the present invention.Special stand 4 used in the present invention is hollow structures, can guarantee that cylindrical permanent magnet 1 passes pedestal 12 and falls to ground.Pedestal 12 adopts copper or the alumina based material cast forms, and sleeve pipe 7 adopts the material the same with pedestal 12, is convenient to weld.The internal diameter of sleeve pipe 7 is slightly larger than the external diameter of conduit 3, so that change conduit 3.Three foundation bolts 9 are used to regulate the vertical of conduit 3.Process two holes on sleeve pipe 7 in advance, its diameter makes two holes concentric greater than the screw hole of tight loop 8 behind the two parts suits, adopts the welding method combination.Be provided with holding screw 10 and cylindrical rubber pad 11 above the tight loop 8, damage the conduit 3 that inserts in order to avoid fastening pressure is excessive.
Fig. 3 is many tapped inductors of electromagnetic induction integration experimental device structural representation of the present invention.Many tapped inductors 2 used in the present invention have adopted single enameled wire 13 to twine in the wire casing 20 of skeleton 16 and have equated the winding method of number of turn place tap, experimental results show that every 10 circle tap effects better, both can on digital storage oscilloscope 6, obtain ideal waveform, and can not make total number of turns too much again.Wire casing 20 is narrow more, and enameled wire 13 is thin more, and measurement result is accurate more, but also high more to technological requirement, thus the width of wire casing 20 between the 1-2 millimeter, the diameter of enameled wire 13 is between the 0.1-0.2 millimeter, can guarantee that per 10 circles just are covered with one deck, are convenient to the tap in edge.Around being welded on below patching panel 15 on the probe 14, the method can protect superfine enameled wire 13 to be difficult for being broken in frequent use by the Wire channel in building on the skeleton 16 21 in each tap.Patching panel 15 is integrated with the method that skeleton 16 adopts hot melt adhesive 17 gummeds or screw to fix, and skeleton 16 has been reserved gummed groove 22, after hot melt adhesive 17 pours into gummed groove 22 and Wire channel in building 21, can guarantee that patching panel 15 is loosening.In order to move up and down many tapped inductors 2, skeleton 16 also has three screw holes, can be equipped with cylindrical rubber pad 19 and friction force adjusting screw 18 according to the demand of friction force.The present invention has adopted tapped inductor 2 more than two for the using method of this device clearly is described, all drops in protection scope of the present invention for the device that adopts single or multiple many tapped inductors 2.
Fig. 4 is many tapped inductors skeleton synoptic diagram shown in Figure 3.Skeleton 16 can adopt organic glass or plastics to form through machined into, and skeleton 16 internal diameters are slightly larger than the external diameter of conduit 3.It is 2 millimeters flat mouthful or semicircular opening chisel processing that Wire channel in building 21 on the skeleton 16 can adopt edge of a knife width.
Fig. 5 is many tapped inductors patching panel synoptic diagram shown in Figure 3.This patching panel 15 is made by copper-clad plate and is toroidal, and the independent conductive region that eight areas of its lower surface are bigger (seeing (a) figure) connects each tap of many tapped inductors 2 respectively, plays a part stationary probe 14 simultaneously.The upper surface spraying of patching panel 15 or printed coil symbol and numeral (seeing (b) figure).The terminal crocodile clip of digital storage oscilloscope 6 signal wires is clipped on the probe 14, so probe 14 will have certain rigidity and diameter, can adopt the contact pin in the finished product connector to substitute.
Grasp using method, the design that the present invention may be better understood is also implemented it.Below introduce several using method:
1. checking Faraday's electromagnetic induction law.Adopt glass tube this moment, and following many tapped inductors are moved to bottom, and single many tapped inductors above only using are forbidden the passage that digital storage oscilloscope links to each other with following many tapped inductors.The duty of digital storage oscilloscope is made as " single obtains " state.Each cylindrical permanent magnet falls behind down and changes a number of turn, can obtain curve shown in Figure 6; Each cylindrical permanent magnet falls behind the many tapped inductors of equidistant decline down, and cylindrical permanent magnet also accelerates by the speed of many tapped inductors, can obtain curve shown in Figure 7.Verified the relation of the induction electromotive force and the number of turn and variation rate of magnetic flux.
2. the landing down respectively of the cylindrical permanent magnet N utmost point, the S utmost point, can obtain curve shown in Figure 8.Verify Lenz about faradic direction in the closed-loop path, always made the magnetic field that it excited stop this conclusion of variation that causes faradic magnetic flux.
3. many tapped inductors are motionless above keeping, below many tapped inductors move twice, measure cylindrical permanent magnet respectively through too much two used times of different spacing of tapped inductor with digital storage oscilloscope, measure corresponding spacing simultaneously, can obtain acceleration of gravity.
4. glass tube is changed into copper pipe or aluminum pipe, when cylindrical permanent magnet passes copper pipe or aluminum pipe free-falling, the sense of current that copper pipe or aluminum pipe produce, always make the magnetic field that it excited stop the variation that causes faradic magnetic flux, just can produce a reacting force that makes progress stops cylindrical permanent magnet to fall, reach the state that at the uniform velocity descends until cylindrical permanent magnet, use tapped inductor more than two to measure this speed, just can know the size of induction current and reacting force by inference.
Can also carry out multinomial experiment, list no longer one by one.
Claims (10)
1. electromagnetic induction integration experimental device, it comprises magnet and coil, it is characterized in that: described magnet is cylindrical permanent magnet (1), and described coil is many tapped inductors (2); Cylindrical permanent magnet (1) passes under action of gravity and is fixed on last and upright conduit (3) free-falling of special stand (4) to magnet absorption layer (5); Be arranged on the outer and tapped inductor more than two (2) that can move up and down of conduit cylindrical permanent magnet (1) is passed to two passages of digital storage oscilloscope (6) for its demonstration and storage through whole change procedures of the out-of-date induction electromotive force that produces.
2. according to the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: described special stand (4) adopts hollow structure, makes cylindrical permanent magnet (1) can pass pedestal (12) and falls to ground; Three foundation bolts (9) are used to regulate the vertical of conduit (3); Sleeve pipe (7) outside of A/C (3) installs two tight loops (8) additional, is provided with holding screw (10) and cylindrical rubber pad (11) above the tight loop (8).
3. according to the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: described many tapped inductors (2) are made up of skeleton (16), enameled wire (13), patching panel (15), probe (14), cylindrical rubber pad (19) and friction force adjusting screw (18).
4. according to the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: the diameter of described cylindrical permanent magnet (1) is 10 millimeters, and length is the 10-20 millimeter.
5. according to the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: the external diameter of described conduit (3) is 15 millimeters, and internal diameter is 12 millimeters, and length is 1-1.5 rice.
6. according to claim 1 and 3 described electromagnetic induction integration experimental devices, it is characterized in that: the width of the wire casing (20) of the skeleton (16) that described many tapped inductors (2) use is between the 1-2 millimeter.
7. according to claim 1 and 3 described electromagnetic induction integration experimental devices, it is characterized in that: the diameter of the enameled wire (13) that described many tapped inductors (2) use is between the 0.1-0.2 millimeter.
8. according to claim 1 and 3 described electromagnetic induction integration experimental devices, it is characterized in that: the patching panel (15) that described many tapped inductors (2) use is a toroidal, upper surface spraying or printed coil symbol and numeral.
9. method of making tapped inductor (2) more than the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: described many tapped inductors (2) make according to following process steps, skeleton (16) adopts organic glass or plastics to form through machined into, except processing wire casing (20), also to reserve gummed groove (22); Wire channel in building (21) employing edge of a knife width is 2 millimeters flat mouthful or the processing of semicircular opening chisel, the end of a thread that extracts every 10 circles by the Wire channel in building (21) on the skeleton (16) around below patching panel (15), being welded on the probe (14), patching panel (15) adopts hot melt adhesive (17) gummed with skeleton (16), after hot melt adhesive (17) pours into gummed groove (22) and Wire channel in building (21), can guarantee that patching panel (15) is not loosening.
10. method of making the special stand (4) of the described electromagnetic induction integration experimental device of claim 1, it is characterized in that: the making of described special stand (4) according to following process steps, on the sleeve pipe (7) of special stand (4), process two holes in advance, its diameter is greater than the screw hole of tight loop (8), make two holes concentric behind the two parts suits, the welding method combination is also adopted in the combination of employing welding method, sleeve pipe (7) and pedestal (12).
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| CN 200610169170 CN101055676A (en) | 2006-12-19 | 2006-12-19 | Electromagnetic induction integration experimental device and its manufacturing method |
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| CN 200610169170 CN101055676A (en) | 2006-12-19 | 2006-12-19 | Electromagnetic induction integration experimental device and its manufacturing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215612A (en) * | 2011-05-20 | 2011-10-12 | 成都东骏激光股份有限公司 | Method for manufacturing induction coil for growth of induction heating crystal |
| CN104181342A (en) * | 2014-09-01 | 2014-12-03 | 上海理工大学 | Oscilloscope probe contact fixing part facilitating measurement |
| CN106652692A (en) * | 2016-12-30 | 2017-05-10 | 罗春春 | Faraday's electromagnetic induction law quantitative experimental exploration instrument |
| CN109686204A (en) * | 2019-02-22 | 2019-04-26 | 何晓凌 | A kind of electromagnetic induction tester |
| CN111199673A (en) * | 2020-03-05 | 2020-05-26 | 福建省同安第一中学 | Faraday's law of electromagnetic induction ration experimental apparatus |
| CN112161157A (en) * | 2020-09-21 | 2021-01-01 | 广州智索信息科技有限公司 | Computer auxiliary support convenient to multidirectional regulation |
| CN113436513A (en) * | 2021-07-20 | 2021-09-24 | 吴雪利 | Physical experiment demonstration equipment for middle school education |
-
2006
- 2006-12-19 CN CN 200610169170 patent/CN101055676A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215612A (en) * | 2011-05-20 | 2011-10-12 | 成都东骏激光股份有限公司 | Method for manufacturing induction coil for growth of induction heating crystal |
| CN102215612B (en) * | 2011-05-20 | 2012-10-24 | 成都东骏激光股份有限公司 | Method for manufacturing induction coil for growth of induction heating crystal |
| CN104181342A (en) * | 2014-09-01 | 2014-12-03 | 上海理工大学 | Oscilloscope probe contact fixing part facilitating measurement |
| CN104181342B (en) * | 2014-09-01 | 2017-02-15 | 上海理工大学 | Oscilloscope probe contact fixing part facilitating measurement |
| CN106652692A (en) * | 2016-12-30 | 2017-05-10 | 罗春春 | Faraday's electromagnetic induction law quantitative experimental exploration instrument |
| CN109686204A (en) * | 2019-02-22 | 2019-04-26 | 何晓凌 | A kind of electromagnetic induction tester |
| CN111199673A (en) * | 2020-03-05 | 2020-05-26 | 福建省同安第一中学 | Faraday's law of electromagnetic induction ration experimental apparatus |
| CN112161157A (en) * | 2020-09-21 | 2021-01-01 | 广州智索信息科技有限公司 | Computer auxiliary support convenient to multidirectional regulation |
| CN113436513A (en) * | 2021-07-20 | 2021-09-24 | 吴雪利 | Physical experiment demonstration equipment for middle school education |
| CN113436513B (en) * | 2021-07-20 | 2022-02-11 | 吴雪利 | Physical experiment demonstration equipment for middle school education |
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Open date: 20071017 |