CN204010443U - Archimedes principle teaching and experimental demonstration instrument - Google Patents
Archimedes principle teaching and experimental demonstration instrument Download PDFInfo
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- CN204010443U CN204010443U CN201420401327.5U CN201420401327U CN204010443U CN 204010443 U CN204010443 U CN 204010443U CN 201420401327 U CN201420401327 U CN 201420401327U CN 204010443 U CN204010443 U CN 204010443U
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- gravity
- buoyancy
- sensor
- archimedes principle
- water
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Abstract
The utility model discloses a kind of Archimedes principle teaching and experimental demonstration instrument, it is mainly by base substrate, be installed on the stand of base substrate, roll, water cup, collecting bowl, buoyancy display, gravity display, buoyancy sensor, gravity sensor and the intelligent data processor being fitted in base substrate form, it is to utilize buoyancy sensor, gravity sensor collection is dipped in the gravity and the data of discharging water gravity in water as the thing piece of experiment, by the experimental result that can directly show " buoyancy that object is subject to " and " draining gravity " after the computing of intelligent data processor, make the student can be by observing buoyancy phenomenon Rapid Establishment " buoyancy that object is subject to " and " draining gravity " relevance between the two, the ABC of the law of buoyancy is deeply familiar with and is grasped to guiding student fast, in physical experiment teaching in middle schools, there is splendid popularizing application prospect.
Description
Technical field
The utility model relates to a kind of Archimedes principle teaching and experimental demonstration instrument, belongs to the technical field of physical teaching aid.It is particularly suitable for experimental demonstration Archimedes'law on classroom, to improving Physics Teaching Quality, has positive effect.
Background technology
We know, being expressed as the law of buoyancy in physics teaching in secondary school: buoyancy refers to that the object being immersed in stationary fluid was subject to from the making a concerted effort of the acting force of fluid all directions, and the size that object is subject to buoyancy equals the gravity that this object arranges fluid.This law of buoyancy found first by the famous scholar Archimedes of B.C. ancient Greek, therefore be called again " Archimedes'law ", also referred to as " Archimedes principle ", its mathematic(al) representation is: F=G=mg=V ρ g.In above-mentioned expression formula: F is buoyancy; G is the gravity that arranges fluid; M is the quality that arranges fluid; G is acceleration of gravity; V is the volume that arranges fluid; ρ is the density of fluid.
In junior physics study course, the law of buoyancy is emphasis teaching chapters and sections, is also a teaching difficulty simultaneously, most of teachers be all adopt experimental teaching mode guiding student observe buoyancy phenomenon and gradually understanding grasp the ABC of the law of buoyancy.Just because of this, the experiment teaching aid about Archimedes principle occupies special status and effect in physics teaching in secondary school.It is reported: in China's ninth grade physics teaching material, be to adopt following experimental technique to demonstrate Archimedes principle: 1. first with spring balance, measure respectively the gravity of thing piece and collecting bowl, be designated as respectively W
1, G
1; 2. in container, add water to gap position, then collecting bowl is positioned over below the gap of container for collecting excessive draining; 3. hand-held spring balance is dipped in the thing piece of suspension in water, and gravity when measurement thing piece is dipped in water, is designated as W
2; With spring balance measurement collection, there is again the gravity of the collecting bowl of excessive draining, be designated as G
2; 4. the data of pair above-mentioned two groups of survey records arrange: the data of twice measurement thing piece gravity are subtracted each other to (W
1-W
2) be object and be dipped in the buoyancy F being subject in water; The data of twice measuring set water tumbler gravity are subtracted each other to (G
2-G
1) be the gravity G of the excessive draining of collection
draining.By analysis, compare and can draw: buoyancy F=(W
1-W
2)=(G
2-G
1)=G
drainingconclusion.So far, complete the content of courses of experimental demonstration " Archimedes principle ".But, we also find in being engaged in physics teaching for a long time: this traditional experimental technique is in the classroom teaching part that also comes with some shortcomings, be embodied in: the operation that hand-held spring balance carries out check weighing very bother and spring balance scale less, reading accuracy is poor, this can make experimental result produce larger error, while particularly demonstrating the water-immersed buoyancy rule of thing piece part, thing piece easily drift rocks and makes spring balance produce vibration up and down, the abnormal occurrence that usually occurs " overflow displacement of volume and object immersion volume partly not etc. ", this can have a strong impact on the teaching efficiency of experimental demonstration.In addition, tediously long and take longer time in classroom to the complicated operation of survey measurements, record and arrangement in when experiment, intuitive, interest and then the interference that also can affect experimental demonstration have weakened the ability of students ' understanding physics law.
Utility model content
The purpose of this utility model is intended to overcome existing experiment teaching aid above shortcomings part, proposes a kind of demonstrate easy to operate, automatically manipulate measurement data the quick Archimedes principle teaching and experimental demonstration instrument that shows experimental result.
The purpose of this utility model realizes according to following technical scheme:
A kind of Archimedes principle teaching and experimental demonstration instrument the utility model proposes, it comprises base substrate, be installed on the stand of base substrate, water cup, collecting bowl and thing piece, on the wall of cup of water cup, be provided with overflow pipe, it is characterized in that: in stand, be installed with buoyancy display, the bearing of gravity display and supporting roll, on roll, install around the lifting coiling that suspention mounts buoyancy sensor, described thing piece hangs on buoyancy sensor lower end and is positioned at the rim of a cup top of water cup, in stand, by cord Suspension hanger, gravity sensor is housed, described collecting bowl hangs on gravity sensor lower end and is positioned at the overflow pipe effluent pipe mouth below of water cup, in base substrate, be fitted with intelligent data processor.Its significant design feature is: it is to utilize to mount the buoyancy sensor in stand, gravity sensor continuous acquisition measurement data is converted into electric signal input intelligent data processor, can be at buoyancy display after carrying out computing by intelligent data processor, on gravity display, directly show " object is dipped in the buoyancy being subject in water ", the experimental result of " draining gravity ", rebooting student is analyzed the relevance that can set up rapidly between " draining gravity " and " object is subject to buoyancy " and then is familiar with the ABC of grasping the law of buoyancy, it can effectively promote the interest of student to Physical Experiment, to strengthening learning ability, improve physics teaching level and have positive effect.
Furthermore, the utility model also has following technical characterictic:
Described intelligent data processor comprises single-chip microcomputer, power circuit, buoyancy change-over circuit, buoyant module, gravity change-over circuit, gravity module and output/input interface.This module building structure design has advantages of that fast operation, data-handling capacity by force, fast show experimental result.
Fixing equipped reel on roll, described lifting coiling is around being placed on reel.This structural design is convenient to thing piece carry out descending operation and can make thing piece in lifting process, keep good stationarity especially.
On roll, be fitted with damping axle sleeve.The object that damping axle sleeve is set is in order to make thing piece have good stationarity and can be statically placed in reposefully any position in decline immersion process, can greatly subtract small bulk body drift rocks and avoids spring balance to produce the phenomenon of vibration up and down, can effectively overcome because of " overflow displacement of volume and object immersion volume partly not etc. " and cause the drawback that experimental error is large, this structural design is particularly conducive to the buoyancy being subject to when experimental demonstration checking thing piece is partly immersed in the water and also meets " Archimedes principle ", and further raising experimental teaching quality is had to positive effect.
On gravity sensor, be fitted with zero setting button.The structural design of this uniqueness can be deducted voluntarily the deadweight of collecting bowl and directly show the gravity G of draining in experimentation
draining, it also has certain effect to the intuitive of Enhancement test demonstration and improvement raising experimental teaching quality.
The utility model compared with the existing technology has following substantive distinguishing features and progress:
The utility model has been initiated equipped buoyancy display in stand, gravity display and mount buoyancy sensor, the check weighing structure of gravity sensor, utilize buoyancy sensor, gravity sensor gathers respectively thing piece and is dipped in the gravity of gravity in water and draining and measurement data is converted to electric signal input intelligent data processor, by intelligent data processor, undertaken after computing again, can directly demonstrate " object is subject to buoyancy ", the experimental result of " draining gravity ", can make students in experiment, clearly observe buoyancy phenomenon and at " draining gravity " and " buoyancy that object is subject to ", set up relevance between the two fast, the ABC of " Archimedes principle " is deeply familiar with and is grasped to guiding student fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model, and accompanying drawing also makes an abstract.
Fig. 2 is the principle of work module frame chart of intelligent data processor of the present utility model.
Description of symbols in accompanying drawing:
1 is base substrate, and 2 is water cup, and 3 is stand, and 4 is lifting handle, 5 is thing piece, and 6 is damping axle sleeve, and 7 is roll, and 8 is buoyancy display, 9 is reel, and 10 is gravity display, and 11 is bearing, and 12 is lifting coiling, 13 is buoyancy sensor, and 14 is overflow pipe, and 15 is cord, 16 is zero setting button, and 17 is gravity sensor, and 18 is collecting bowl, 19 is power switch, and 20 is battery, and 21 is intelligent data processor.
Embodiment
Below in conjunction with accompanying drawing, further describe embodiment of the present utility model:
An Archimedes principle teaching and experimental demonstration instrument, it is mainly by base substrate 1, be installed on the stand 3 of base substrate 1, be provided with the water cup 2 of overflow pipe 14, collecting bowl 18, buoyancy display 8, buoyancy sensor 13, gravity display 10, gravity sensor 17, be fitted with the roll 7 of reel 9, be fitted to the intelligent data processor 21 in base substrate 1, battery 20 forms, the two ends of roll 7 are supported on stand 3 and are installed on the bearing 11 of stand 3 by damping axle sleeve 6, fixing around cover lifting coiling 12 on reel 9, described buoyancy sensor 13 is that Suspension hanger is loaded on lifting 12 lower ends that wind the line, in the lower end of buoyancy sensor 13, hang as the thing piece 5 of testing and make thing piece 5 be positioned at the rim of a cup top position of water cup 2, in stand 3, by cord 15 suspentions, mount gravity sensor 17, described collecting bowl 18 is the effluent pipe mouth belows that hang on gravity sensor 17 lower ends and be positioned at the overflow pipe 14 of water cup 2, described buoyancy display 8, gravity display 10 is to be fixedly installed in corresponding buoyancy sensor 13 in stand 3, the position of gravity sensor 17, described intelligent data processor 21 comprises single-chip microcomputer, power circuit, buoyancy change-over circuit, buoyant module, gravity change-over circuit, gravity module and output/input interface.It should be noted that: the working procedure that presets " after the initial gravity that thing piece does not soak and the immersion of thing piece, gravity subtracts each other " in single-chip microcomputer, can on buoyancy display 8, directly show the buoyancy that thing piece is subject in being dipped in water, on gravity sensor 17, be fitted with zero setting button 16, when pressing zero setting button 16, can directly show at gravity display 10 gravity of the rear collected draining of deduction collecting bowl 18 deadweight.When carrying out experimental demonstration: first the Archimedes principle teaching and experimental demonstration instrument the utility model proposes is lain against on desktop, to the nozzle position that adds water to overflow pipe 14 in water cup 2, after errorless on inspection, can turn on the power switch 19, after 21 each module initializations of intelligent data processor, initial gravity when buoyancy sensor 13 can be measured voluntarily thing piece 5 and do not soak also deposits data in single-chip microcomputer in, single-chip microcomputer carries out computing by the program of " after the initial gravity that thing piece does not soak and the immersion of thing piece, gravity subtracts each other ": thing piece 5 is before being immersed in the water, the buoyancy numerical value showing on buoyancy display 8 is " 0 ", the numerical value of display set water tumbler 18 deadweights on gravity display 10, after pressing zero setting button 16, the gravity numerical value that gravity display 10 shows becomes " 0 ", be the gravity after 18 deadweights of deduction collecting bowl.So far can carry out experimental implementation, rotating lifting handle 4 gently immerses in the water in water cup 2 thing piece 5 uniform descents by reel 9, at the thing piece 5 contact waters surface, be immersed in the water gradually until be dipped in completely in the decline process in water, buoyancy sensor 13 can be measured continuously the gravity of thing piece 5 and by buoyancy change-over circuit, electric signal be inputted and in single-chip microcomputer, carried out computing, again by buoyant module to buoyancy display 8 output signals, can on buoyancy display 8, show continuously thing piece 5 in part immersion until the numerical value of the suffered buoyancy of overall process in being dipped in water completely, we can observe: the buoyancy numerical value showing on buoyancy display 8 increases gradually.Meanwhile, because thing piece 5 is immersed in the water gradually, from the interior quantity of discharging water through overflow pipe 14 of water cup 2, also can increase thereupon, in like manner, gravity sensor 17 also continuously the interior collection of measuring set water tumbler 18 discharge the gravity of water and by gravity change-over circuit, electric signal inputted and in single-chip microcomputer, carried out computing, pass through again gravity module to gravity display 10 output signals, can on gravity display 10, show continuously the gravity numerical value of discharging water, we can observe: the gravity numerical value that gravity display 10 shows also increases gradually.When the arbitrary position of thing piece 5 in immersed body process stops, on buoyancy display 8, gravity display 10, can be presented at respectively now the buoyancy numerical value of this position and the fixed value of discharge water gravity numerical value, we can observe: thing piece 5 is in water-immersed arbitrary position, and the shown buoyancy numerical value of buoyancy display 8 all equates with the discharge water gravity numerical value of the corresponding demonstration of gravity display 10.Through grouping many experiments, repeatedly carry out observation and comparison and all can draw same experimental result.Arrive this, can be ideally by experiment demonstration verify the Archimedes principle of " thing piece immerse the suffered buoyancy in the arbitrary position of water body equate with the gravity at water that discharge this position ", this is deeply familiar with quick guiding student and the ABC of grasping the law of buoyancy has very obvious teaching efficiency.
It should be noted that: between two groups of experiments, only need continue to add water and without the remaining water of pouring out in time in collecting bowl 18 to water cup 2 is interior, as long as press zero setting button 16 deadweight that all energy bales catch removes remaining water and collecting bowl 18, can carry out immediately next time experiment, to improving conventional efficient, save the valuable classroom experiment time and have certain effect.
Claims (5)
1. an Archimedes principle teaching and experimental demonstration instrument, it comprises base substrate (1), be installed on the stand (3) of base substrate (1), water cup (2), collecting bowl (18) and thing piece (5), on the wall of cup of water cup (2), be provided with overflow pipe (14), it is characterized in that: in stand (3), be installed with buoyancy display (8), the bearing (11) of gravity display (10) and supporting roll (7), on roll (7), install around the lifting coiling (12) that suspention mounts buoyancy sensor (13), described thing piece (5) hangs on buoyancy sensor (13) lower end and is positioned at the rim of a cup top of water cup (2), in stand (3), above by cord (15) Suspension hanger, gravity sensor (17) is housed, described collecting bowl (18) hangs on gravity sensor (17) lower end and is positioned at overflow pipe (14) the effluent pipe mouth below of water cup (2), in base substrate (1), be fitted with intelligent data processor (21).
2. Archimedes principle teaching and experimental demonstration instrument according to claim 1, is characterized in that: described intelligent data processor (21) comprises single-chip microcomputer, power circuit, buoyancy change-over circuit, buoyant module, gravity change-over circuit, gravity module and output/input interface.
3. Archimedes principle teaching and experimental demonstration instrument according to claim 1 and 2, is characterized in that: at the upper fixing equipped reel (9) of roll (7), described lifting coiling (12) is around being placed on reel (9).
4. Archimedes principle teaching and experimental demonstration instrument according to claim 1 and 2, is characterized in that: on roll (7), be fitted with damping axle sleeve (6).
5. Archimedes principle teaching and experimental demonstration instrument according to claim 1 and 2, is characterized in that: on gravity sensor (17), be fitted with zero setting button (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401327.5U CN204010443U (en) | 2014-07-21 | 2014-07-21 | Archimedes principle teaching and experimental demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401327.5U CN204010443U (en) | 2014-07-21 | 2014-07-21 | Archimedes principle teaching and experimental demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010443U true CN204010443U (en) | 2014-12-10 |
Family
ID=52050409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420401327.5U Expired - Fee Related CN204010443U (en) | 2014-07-21 | 2014-07-21 | Archimedes principle teaching and experimental demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109285428A (en) * | 2016-08-17 | 2019-01-29 | 史玉成 | Buoyancy demonstration teaching aid |
-
2014
- 2014-07-21 CN CN201420401327.5U patent/CN204010443U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109285428A (en) * | 2016-08-17 | 2019-01-29 | 史玉成 | Buoyancy demonstration teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141210 Termination date: 20160721 |