CN206411974U - A kind of single line loop current magnetic induction intensity experimental provision - Google Patents
A kind of single line loop current magnetic induction intensity experimental provision Download PDFInfo
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- CN206411974U CN206411974U CN201621318995.7U CN201621318995U CN206411974U CN 206411974 U CN206411974 U CN 206411974U CN 201621318995 U CN201621318995 U CN 201621318995U CN 206411974 U CN206411974 U CN 206411974U
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- unicoil
- protractor
- needle
- small magnetic
- induction intensity
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- 230000006698 induction Effects 0.000 title claims abstract description 29
- 230000000630 rising effect Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001739 density measurement Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005358 geomagnetic field Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Abstract
The utility model discloses a kind of single line loop current magnetic induction intensity experimental provision, including：Table (1), cylinder (2), unicoil (3), power unit (4), small magnetic needle (5), protractor (6), center line (7), connecting line (8), rise as high as the banks (9), graduation mark (10)；Embedded transparent cylinder (2) on table (1), unicoil (3) is wound on the outside of cylinder (2), and is connected by connecting line (8) with the binding post of power unit (4).So that the disk of unicoil (3) is consistent with earth magnetism field direction, then small magnetic needle (5) is progressively moved along horizontal center line (7) to unicoil (3) edge, read the angle of small magnetic needle (5) deflection of corresponding points, correspondence each point magnetic induction intensity value can be calculated, so that it is determined that whole distribution situations of unicoil (3) plane intrinsic inductance.
Description
Technical field
The utility model is related to a kind of physics facility, more particularly to a kind of reality of the magnetic induction intensity of single line loop current
Experiment device.
Background technology
In current physics teaching, on the knowledge point of the magnetic induction intensity of single line loop current, in general physics teaching material only
Electric current is given by magnetic induction intensity during unicoil in unicoil circle centre position, the magnetic induction to arbitrfary point in unicoil plane
Intensity is not discussed, when coil turn is a lot, and electromagnetic induction is very strong and easily measures, but monocoil electromagnetism
Sensing is weaker, and the current field produced when particularly electric current is less is very weak, just more difficult measurement.
The magnetic flux density measurement device having had on the market is the instrument for the electric current magnetic induction intensity for measuring multi-coil mostly
Device, and be all direct reading in the measurements, for physics teaching learning, understand that related electromagnetism is gained knowledge without much sides
Help.
Utility model content
The purpose of this utility model is to provide a kind of single line loop current magnetic flux density measurement device, applied to physics teaching
In, and measured by testing, the Magnetic Induction Density Distribution situation of arbitrfary point in unicoil plane is obtained, and learn the physics of correlation
Knowledge.
The purpose of this utility model is achieved through the following technical solutions：
A kind of single line loop current magnetic induction intensity experimental provision as shown in figure 1, including：Table 1, cylinder 2, unicoil 3, electricity
Source part 4, small magnetic needle 5, protractor 6, center line 7, connecting line 8,9, graduation mark 10 of rising as high as the banks.
Described table 1 is made of rigid plastics, is the supporting part and experiment porch of experimental provision；
Embedded transparent cylinder 2 on described table 1, unicoil 3 is wound on the outside of cylinder 2, and passes through connecting line 8 and power supply
The binding post of part 4 is connected；
Be formed with described table 1 and rise as high as the banks 9, rise as high as the banks 9 front end it is concordant with the front end face of table 1, rear end face and coil 3 are flat
In face of neat, rise as high as the banks 9 depth it is identical with protractor thickness used, i.e., protractor 6 is placed on and risen as high as the banks in 9, protractor 6 it is upper
Surface is concordant with the upper level of table 1.
Described table 1 is formed with graduation mark 10 on the edge desktop for 9 rear ends of rising as high as the banks.
Described unicoil 3 is made of 1~2mm of diameter copper conductor, and the outside for being wound on transparent cylinder 2 is stuck up to prevent coil
It is bent, it is ensured that unicoil 3 is on same disk everywhere, and the circular flat of unicoil 3 and the upper surface of table 1 is hung down
Directly.
The disk radius R of described unicoil 3 is 6~10cm；
The distance that the horizontal center line 7 of the disk of described unicoil 3 is higher by the upper surface of table 1 is the finger of small magnetic needle 5
Pin to the bottom surface of small magnetic needle 5 height, when small magnetic needle 5 is placed in 1 upper surface of table, the height and center line 7 of the pointer of small magnetic needle 5
Height is concordant, when edge of the small magnetic needle 5 along groove 10 is moved, accurately can read small magnetic needle 5 in single line from graduation mark 10
Enclose in 3 disks along the position of horizontal center line 7.
In the case of the pointer midpoint consistency from top to bottom of the angle summit of protractor 6 and small magnetic needle 5, by protractor 6 and small
Needle 5 is sticked together with glue, constitutes a kind of new survey tool：" needle-protractor combination instrument " is as shown in Figure 3.Should " magnetic
Pin-protractor combination instrument " can be moved integrally in 9 rising as high as the banks along the edge of groove 10, can accurately be read from graduation mark 10
Go out small magnetic needle 5 in the disk of unicoil 3 along the position of horizontal center line 7, again can along small magnetic needle 5 sensing, along angulation
Groove on device 6 reads the deflection angle of small magnetic needle 5.
Compared with prior art, a kind of single line loop current magnetic induction intensity experimental provision of the present utility model, can both determine
That measures measures in unicoil plane, the Magnetic Induction Density Distribution situation of each point, can learn the physical knowledge of correlation again, use
Convenient and simple in construction, easily operation, practical.
Brief description of the drawings
Fig. 1 is a kind of single line loop current magnetic induction intensity experimental provision schematic diagram of the present utility model.
Fig. 2 is the magnetic induction density B and earth's magnetic field B that electric current is produced in unicoil 3 of the present utility modelXRelation schematic diagram.
Fig. 3 is " needle-protractor combination instrument " schematic diagram of the present utility model.
In figure：1st, table, 2, cylinder, 3, unicoil, 4, power unit, 5, small magnetic needle, 6, protractor, 7, center line, 8,
Connecting line, 9, rise as high as the banks, graduation mark 10.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole realities
Apply example.Based on embodiment of the present utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to protection domain of the present utility model.
A kind of single line loop current magnetic induction intensity experimental provision, as shown in Figure 1.
Horizontally rotate table 1, adjust the direction of table 1 so that the disk of unicoil 3 is consistent with earth magnetism field direction, i.e.,
Small magnetic needle 5 is put into the disk of unicoil 3, the signified direction of small magnetic needle 5.Unicoil 3 is not powered on the sensing of small magnetic needle 5 during stream
It is in unicoil 3 in same plane.
Unicoil 3 have electric current by when, unicoil 3 produce magnetic induction density B perpendicular to unicoil 3 disk, neglect
Geomagnetic field vertical component is omited, then the magnetic field that electric current is produced in unicoil 3 of small magnetic needle 5 and earth's magnetic field BXIn the presence of, deflection angle
θ is spent, as shown in Figure 2.It is by the magnetic induction intensity of the electric current generation of unicoil 3 then
B=Bxtanθ (1)
When small magnetic needle 5 is in the center of unicoil 3, the deflection angle of small magnetic needle 5 is θ0, now unicoil 3
Electric current produce magnetic induction intensity be
The horizontal component in earth's magnetic field
In formula, μ0For space permeability；I is the electric current by unicoil 3；R is the radius of unicoil 3.
(3) formula is substituted into (1) formula, the magnetic induction intensity that can obtain the electric current of unicoil 3 is
If constant by the current value I of unicoil 3, in formula (4), items are measurable obtains.
A kind of single line loop current magnetic induction intensity experimental provision, specific embodiment includes：
By the DC current of certain certain value in unicoil 3, preferably, being 1~2 peace by electric current；
Small magnetic needle 5 is placed at the disk central point O of unicoil 3 first, then small magnetic needle is put down relative to the circle of unicoil 3
Face direction deflects θ0, measure deflection angle θ0Afterwards, B can be calculated by formula (3)XValue.
Protractor 6 is placed in rising as high as the banks in 9 on table 1 first during measurement because rise as high as the banks 9 depth and protractor used
6 thickness are identical, i.e., be placed on protractor 6 and rise as high as the banks in 9, the upper surface of protractor 6 is concordant with the upper level of table 1.
So that the summit of the angle on protractor 6 is located at the underface at the disk central point O of coil 3, small magnetic needle 5 is put
Surface in the angle summit on protractor 6, the pointer midpoint of small magnetic needle 5 is located exactly at the midpoint O of the disk of coil 3
Place, now the cylindrical base half of small magnetic needle 5 is on protractor 6, and second half is located on the graduation mark 10 of table 1.Along
Direction guided by small magnetic needle 5, can accurately read small magnetic needle 5 at the disk central point O of unicoil 3 on protractor 6
Deflection angle theta0。
Now can be in the case of the pointer midpoint consistency from top to bottom of the angle summit of protractor 6 and small magnetic needle 5, by protractor
6 and small magnetic needle 5 sticked together with glue, constitute a kind of new survey tool：" needle-protractor combination instrument ", should " needle-amount
Angle device combination instrument " can be moved integrally in 9 rising as high as the banks along the edge of graduation mark 10, can accurately be read from graduation mark 10 small
Needle 5 in the disk of unicoil 3 along the position of horizontal center line 7, again can along small magnetic needle 5 sensing, on protractor 6
Groove read the deflection angle of small magnetic needle 5, reduce error in reading, accuracy of reading is convenient.
Then will " needle-protractor combination instrument " in the disk of unicoil 3 along the shift position of horizontal center line 7, as
It is preferred that, the 1/8 of the disk radius R of unicoil 3 can be moved every time, from unicoil 3 the sidesway of wire one from center of circle O to unicoil 3
It is dynamic, and ensure that the central point of the pointer of small magnetic needle 5 is always positioned on the horizontal center line 7 of the disk of unicoil 3, read corresponding points
Small magnetic needle 5 deflection angle θ1、θ2、θ3..., correspondence each point magnetic induction intensity value B can easily be calculated by formula (1)1、
B2、B3…。
Because unicoil 3 can be rotated in experimental provision around its central point, so measuring B1、B2、B3... etc., just
Equal to the whole cloth situations that there is known in the plane intrinsic inductance of unicoil 3.
Compared with prior art, a kind of single line loop current magnetic induction intensity experimental provision of the present utility model, can both determine
That measures measures in unicoil plane, the Magnetic Induction Density Distribution situation of each point, can learn the physical knowledge of correlation again, use
Convenient and simple in construction, easily operation, practical.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.
Claims (5)
1. a kind of single line loop current magnetic induction intensity experimental provision, it is characterized in that：Including table (1), cylinder (2), unicoil
(3), power unit (4), small magnetic needle (5), protractor (6), center line (7), connecting line (8), rise as high as the banks (9), graduation mark (10)；
Described table (1) is made of rigid plastics, is the supporting part and experiment porch of experimental provision；
Embedded transparent cylinder (2) on described table (1), unicoil (3) is wound on the outside of cylinder (2), and passes through connecting line (8)
It is connected with the binding post of power unit (4)；
Be formed with rise as high as the banks (9) on described table (1), rise as high as the banks (9) front end it is concordant with the front end face of table (1), rear end face and line
Enclose (3) planar registration, rise as high as the banks (9) depth it is identical with protractor thickness used, i.e., protractor (6) is placed on rise as high as the banks (9)
Interior, the upper surface of protractor (6) is concordant with the upper level of table (1)；
Described table (1) is formed with graduation mark (10) on the edge desktop of (9) rear end of rising as high as the banks.
2. a kind of single line loop current magnetic induction intensity experimental provision according to claim 1, it is characterised in that described list
Coil (3) is made of 1~2mm of diameter copper conductor, is wound on the outside of transparent cylinder (2) to prevent coil warpage, it is ensured that single line
Circle (3) is on same disk everywhere, and make unicoil (3) circular flat and table (1) upper surface it is vertical.
3. a kind of single line loop current magnetic induction intensity experimental provision according to claim 1, it is characterised in that described list
The disk radius R of coil (3) is 6~10cm.
4. a kind of single line loop current magnetic induction intensity experimental provision according to claim 1, it is characterised in that described list
The horizontal center line (7) of the disk of coil (3) is higher by the pointer of the distance of table (1) upper surface for small magnetic needle (5) to small magnetic
The height of pin (5) bottom surface, when small magnetic needle (5) is placed in table (1) upper surface, the height and center line of the pointer of small magnetic needle (5)
(7) height is concordant, when edge of the small magnetic needle (5) along graduation mark (10) is moved, can accurately be read from graduation mark (10) small
Needle (5) is in the interior position along horizontal center line (7) of unicoil (3) disk.
5. a kind of single line loop current magnetic induction intensity experimental provision according to claim 1, it is characterised in that by protractor
(6) sticked together after angle summit and the pointer midpoint consistency from top to bottom of small magnetic needle (5), constitute survey tool " needle-protractor
Combine instrument ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621318995.7U CN206411974U (en) | 2016-11-25 | 2016-11-25 | A kind of single line loop current magnetic induction intensity experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621318995.7U CN206411974U (en) | 2016-11-25 | 2016-11-25 | A kind of single line loop current magnetic induction intensity experimental provision |
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| Publication Number | Publication Date |
|---|---|
| CN206411974U true CN206411974U (en) | 2017-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621318995.7U Expired - Fee Related CN206411974U (en) | 2016-11-25 | 2016-11-25 | A kind of single line loop current magnetic induction intensity experimental provision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652688A (en) * | 2016-11-25 | 2017-05-10 | 湖州师范学院 | Single-coil current magnetic induction intensity experiment apparatus |
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2016
- 2016-11-25 CN CN201621318995.7U patent/CN206411974U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652688A (en) * | 2016-11-25 | 2017-05-10 | 湖州师范学院 | Single-coil current magnetic induction intensity experiment apparatus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 |