CN203465879U - Demonstration teaching aid for electromagnetic induction experiment - Google Patents
Demonstration teaching aid for electromagnetic induction experiment Download PDFInfo
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- CN203465879U CN203465879U CN201320605969.2U CN201320605969U CN203465879U CN 203465879 U CN203465879 U CN 203465879U CN 201320605969 U CN201320605969 U CN 201320605969U CN 203465879 U CN203465879 U CN 203465879U
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Abstract
A demonstration teaching aid for an electromagnetic induction experiment comprises an electromagnetic induction demonstration system and an information acquisition system. The information acquisition system comprises voltage sensors, data collectors and a computer. The electromagnetic induction demonstration system comprises LED lamps, a board, electromagnetic relays, organic glass tubes, coils and photoelectric gate sensors. The electromagnetic relays are arranged above the organic glass tubes. The board is arranged under the organic glass tubes. Each photoelectric gate sensor is arranged on the outer ring of each coil. Each LED lamp is arranged at the left side of the coil. The voltage sensors are in parallel connection with the photoelectric gate sensors. The voltage sensors, the data collectors and the computer are sequentially connected. The demonstration teaching aid for the electromagnetic induction experiment is capable of demonstrating the relationships between various elements and induced electromotive force more visually and vividly.
Description
Technical field
The utility model relates to a kind of electromagnetic induction experiment demonstration teaching aid.
Background technology
In teaching of senior high school, Faraday's electromagnetic induction law is the difficult point of teaching always.But existing teaching aid is comprehensive not to the displaying of electromagnetic induction phenomenon, the law of electromagnetic induction is not determined to quantitative analysis, student cannot intuitively profoundly understand relation wherein.And the instrument that we design has well quantitative and intuitive, can help better the knowledge of Students ' Learning electromagnetic induction.
Electromagnetic induction experiment demonstration teaching aid is in the Faraday's electromagnetic induction law of high school physics (taking as an elective course 3-2) chapter 4 the 4th joint, about the raw electric concept of magnetic, visually the relation between induction electromotive force E and magnetic induction density B, effective length L, instantaneous velocity v is represented clearly.And this teaching aid utilizes the knowledge of electromagnetic relay, guarantee the simultaneity that magnet falls, reduce experimental error, utilize again the combination of voltage sensor, data acquisition unit and computing machine, in the time of can observing more intuitively in the law of electromagnetic induction different variable, the situation of change of induction electromotive force, helps student to understand better knowledge content.
The design of this teaching aid can be attended class as high school teachers draws within the class period and holds, and first knowledge is showed to student with lively teaching aid before can be at school, excites student's interest, improves the quality of attending class.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electromagnetic induction experiment demonstration teaching aid that can show the relation between each key element and induction electromotive force more visual in imagely.
The utility model is achieved through the following technical solutions:
A kind of electromagnetic induction experiment demonstration teaching aid, comprise electromagnetic induction demonstration system and information acquisition system, information acquisition system comprises voltage sensor, data acquisition unit, computing machine, electromagnetic induction demonstration system comprises LED lamp, plank, electromagnetic relay, plexi-glass tubular, coil and photoelectricity door sensor, electromagnetic relay is arranged on plexi-glass tubular top, plank is arranged on plexi-glass tubular below, photoelectricity door sensor is arranged on coil outer ring, described LED lamp is arranged on coil left side, described voltage sensor and photoelectricity door sensor Electricity Federation, described voltage sensor, data acquisition unit is connected successively with computing machine.
As preferred technical scheme, described coil is provided with at least two, and the winding width of described each coil is identical.
As preferred technical scheme, the height of described each coil is different.
The beneficial effects of the utility model are: this teaching aid is by the law of electromagnetic induction in secondary curriculum
combine with the books example of sensor, by changing magnetic induction density, effective length, the factors such as instantaneous velocity, by voltage sensor, data acquisition unit, the variation of quantitative test induction electromotive force.Meanwhile, a LED lamp is set on the coil left side, visually by the induction current size of inside, magnetic field more out; Photoelectricity door is installed on coil, intuitively the size of speed is shown.Give student's the classroom enjoyment of taking, show the relation between each key element and induction electromotive force more visual in imagely.
Accompanying drawing explanation
For ease of explanation, the utility model is described in detail by following specific embodiment and accompanying drawing.
Fig. 1 is schematic diagram of the present utility model.
Embodiment
A kind of electromagnetic induction experiment demonstration teaching aid as shown in Figure 1, comprise electromagnetic induction demonstration system and information acquisition system, information acquisition system comprises voltage sensor 7, data acquisition unit 8, computing machine 9, electromagnetic induction demonstration system comprises LED lamp 1, plank 2, electromagnetic relay 3, plexi-glass tubular 4, coil 5 and photoelectricity door sensor 6, electromagnetic relay 3 is arranged on plexi-glass tubular 4 tops, plank 2 is arranged on plexi-glass tubular 4 belows, photoelectricity door sensor 6 is arranged on coil 5 outer rings, described LED lamp 1 is arranged on coil 5 left sides, described voltage sensor 7 and photoelectricity door sensor 6 Electricity Federations, described voltage sensor 7, data acquisition unit 8 is connected successively with computing machine 9.
Wherein, described coil 5 is provided with at least two, and the winding width of described each coil 5 is identical.
The height of described each coil 5 is different.
Specific implementation process of the present utility model: by introducing sensor, photoelectricity door sensor is connected with data acquisition unit with voltage sensor, be connected with computing machine again, draw on computers the induction electromotive force image producing in process, the comparator coil number of turn, coil height and its relation, the size of accurately reading instantaneous velocity v.And introducing electromagnetic relay, is arranged on organic glass top, guarantees the simultaneity that magnet falls, and reduces error.
Teaching aid demonstration time-division three parts, the firstth, the relation of demonstration induction electromotive force and effective length, first guarantee that coil height is identical, by changing coil turn, thereby change the size of effective cutting length, use electromagnetic relay by the top static release of three pieces of identical neodium magnets whiles from plexi-glass tubular, while observing magnet by coil, the bright dark degree of LED lamp, pass through voltage sensor, obtain the curve map of electromotive force and time, thereby obtain the relation of induction electromotive force and effective cutting length, and experimental phenomena is explained and illustrated.The secondth, the relation of demonstration induction electromotive force and instantaneous velocity, first guarantee that coil turn is identical, by changing the height of coil, thereby change the size of instantaneous velocity, at glass bar differing heights, respectively around the coil of the upper identical number of turn, use electromagnetic relay by the top static release of three pieces of identical neodium magnets whiles from plexi-glass tubular, while observing magnet by coil, the bright dark degree of LED lamp, pass through voltage sensor, observe directly the variation oscillogram of electromotive force, attempt adopting photoelectricity door, record instantaneous velocity, the relation of analysis and research induction electromotive force and instantaneous velocity, and experimental phenomena is explained and illustrated.The 3rd is the relation of demonstration induction electromotive force and magnetic induction density, first guarantee coil turn and highly identical, by changing magnet itself, thereby change the size of electromagnetic intensity, on with a glass tube, use the electromagnetic relay static release in top from plexi-glass tubular by three pieces of different magnet respectively, while observing magnet by coil, the bright dark degree of LED lamp, pass through voltage sensor, obtain the curve map of electromotive force and time, thereby obtain the relation of induction electromotive force and electromagnetic intensity, and experimental phenomena is explained and illustrated.
The beneficial effects of the utility model are: this teaching aid is by the law of electromagnetic induction in secondary curriculum
combine with the books example of sensor, by changing magnetic induction density, effective length, the factors such as instantaneous velocity, by voltage sensor, data acquisition unit, the variation of quantitative test induction electromotive force.Meanwhile, a LED lamp is set on the coil left side, visually by the induction current size of inside, magnetic field more out; Photoelectricity door is installed on coil, intuitively the size of speed is shown.Give student's the classroom enjoyment of taking, show the relation between each key element and induction electromotive force more visual in imagely.
The above, be only embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. an electromagnetic induction experiment demonstration teaching aid, it is characterized in that: comprise electromagnetic induction demonstration system and information acquisition system, information acquisition system comprises voltage sensor (7), data acquisition unit (8), computing machine (9), electromagnetic induction demonstration system comprises LED lamp (1), plank (2), electromagnetic relay (3), plexi-glass tubular (4), coil (5) and photoelectricity door sensor (6), electromagnetic relay (3) is arranged on plexi-glass tubular (4) top, plank (2) is arranged on plexi-glass tubular (4) below, photoelectricity door sensor (6) is arranged on coil (5) outer ring, described LED lamp (1) is arranged on coil (5) left side, described voltage sensor (7) is in parallel with photoelectricity door sensor (6), described voltage sensor (7), data acquisition unit (8) is connected successively with computing machine (9).
2. electromagnetic induction experiment demonstration teaching aid according to claim 1, is characterized in that: described coil (5) is provided with at least two, and the winding width of described each coil (5) is identical.
3. electromagnetic induction experiment demonstration teaching aid according to claim 2, is characterized in that: the height of described each coil (5) is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605969.2U CN203465879U (en) | 2013-09-29 | 2013-09-29 | Demonstration teaching aid for electromagnetic induction experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605969.2U CN203465879U (en) | 2013-09-29 | 2013-09-29 | Demonstration teaching aid for electromagnetic induction experiment |
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| Publication Number | Publication Date |
|---|---|
| CN203465879U true CN203465879U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320605969.2U Expired - Fee Related CN203465879U (en) | 2013-09-29 | 2013-09-29 | Demonstration teaching aid for electromagnetic induction experiment |
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| Country | Link |
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| CN (1) | CN203465879U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573108B (en) * | 2016-03-18 | 2017-03-01 | 國立虎尾科技大學 | Electromagnetic induction teaching aid kit |
| CN107644576A (en) * | 2017-09-28 | 2018-01-30 | 东南大学成贤学院 | A kind of intelligent motional electromotive force tester |
| CN107705683A (en) * | 2017-11-13 | 2018-02-16 | 山西大学 | A kind of electromagnetic damping phenomenon demonstration instrument |
-
2013
- 2013-09-29 CN CN201320605969.2U patent/CN203465879U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573108B (en) * | 2016-03-18 | 2017-03-01 | 國立虎尾科技大學 | Electromagnetic induction teaching aid kit |
| CN107644576A (en) * | 2017-09-28 | 2018-01-30 | 东南大学成贤学院 | A kind of intelligent motional electromotive force tester |
| CN107705683A (en) * | 2017-11-13 | 2018-02-16 | 山西大学 | A kind of electromagnetic damping phenomenon demonstration instrument |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20140929 |
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| EXPY | Termination of patent right or utility model |