CN104966440A - Physical experiment device for demonstrating two-dimensional motion - Google Patents
Physical experiment device for demonstrating two-dimensional motion Download PDFInfo
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- CN104966440A CN104966440A CN201510399266.2A CN201510399266A CN104966440A CN 104966440 A CN104966440 A CN 104966440A CN 201510399266 A CN201510399266 A CN 201510399266A CN 104966440 A CN104966440 A CN 104966440A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
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Abstract
The invention provides a physical experiment device for demonstrating two-dimensional motion. The physical experiment device includes a background plate, a camera and a computer; the background plate is of a light-colored rectangular flat plate structure; the background plate is provided with a detachable fixing device for fixing the background plate; a picture frame for focusing is drawn on the background plate; the camera is used for shooting a physical experiment; and the computer analyzes the physical experiment according to image data shot by the camera. The physical experiment device can be connected with various kinds of physical experimental appliances, and can be used for shooting and calculating objects which perform two-dimensional motion. With the physical experiment device adopted, the physical experiment can be carried out intuitively and reliably.
Description
Technical field
The present invention relates to a kind of physics teaching in secondary school teaching aid, particularly relating to a kind of physics facility for demonstrating two dimensional surface motion.
Background technology
The rule that study movement object is followed, the distance of such as moving and the relation of time, the velocity variations of motion and the relation of time etc. are substances of physics teaching in secondary school.
Be locate and the time with ruler, stopwatch the earliest, this is entirely manual.Develop gradually later with the mode getting timing ready locate, the time.But the athletic meeting of this measurement to object impacts, special when object of which movement or motion change slightly soon time, affect larger.To moving fast, conventional stroboscope photograph such as such as freely falling body, flat paraboloid etc. is studied.Stroboscope photograph can obtain movement locus very intuitively, but manual measurement is still wanted in the position of object, and the illumination condition etc. of shooting, is not suitable for classroom instruction.
The digital experiment of rising in recent years is substantially all locate and the corresponding time with impulse ultrasound range finding, the position of mensuration object that can be very correct and the time of correspondence.But slightly deficient in the intuitive of movement locus, and more professional sensor device to be had.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above, and providing a kind of physics facility for demonstrating two dimensional surface motion, comprising:
Background board, described background board is light rectangular flat plate structure, and described background board has dismountable stationary installation, for being fixed by described background board, described background board is decorated with the picture frame of focusing;
Video camera, for taking described Physical Experiment;
Computing machine, described computing machine is analyzed described Physical Experiment according to the image data of described shot by camera.
Preferably, also comprise: electromagnet and drive unit, described electromagnet is arranged on the edge of described background board, and described electromagnet can move along the edge of described background board, and described drive unit is for controlling startup and the cut out of described electromagnet; And bead, described bead is permeability magnetic material, for carrying out described Physical Experiment
Preferably, also comprise chute, described chute is removably fixed on the edge of described background board, for providing initial velocity to described bead, described chute possesses interconnective Part I and Part II, and the angle between shown Part I and Part II is adjustable, when described chute is fixed on described background board, described Part II and plane-parallel, described Part I described Part II one end is provided with point of fixity, for fixing described electromagnet.
Preferably, also comprise vertical rod, cycloid folder and cycloid, described vertical rod is vertically fixed on the coboundary of described background board, and one end of described cycloid is clamped in described vertical rod by cycloid, and the other end is connected with described bead.
Preferably, also comprise spring and device for measuring force, described spring one end is connected with described bead, and the other end is connected with described device for measuring force, and described device for measuring force is removably fixed on the edge of described background board.
Preferably, also comprise: dolly and grooved rail, the dismountable coboundary being fixed on described background board of described grooved rail, and keep level, slide along described grooved rail for described dolly;
The slide block also comprising slide bar and be arranged on described slide bar, described slide bar to be fixed on described dolly and to keep described slide bar and horizontal plane, and described slide block set is located on described slide bar.
Preferably, also comprise track support, track, dolly, device for measuring force, described track support is fixed on described background board, for supporting described track and regulating the angle of described track and surface level, described dolly is connected by fine rule with described device for measuring force, for drawing described dolly, and measures tractive force.
Preferably, between described device for measuring force and described dolly, be also provided with fixed pulley, for ensureing the direction of described tractive force and described parallel track.
Preferably, described device for measuring force is force snesor or dynamometer.
Preferably, also comprise accumulator tank, be arranged on the lower end of described background board, for recovery experiment equipment.
Utilize the instructional device for Demonstrating Physics Experiment of the present invention, engage analytical equipment and the filming apparatus of specialty, some Physical Experiments can be demonstrated more clear on classroom, intuitively, and experimental data can be utilized to carry out calculating and describing track, be applicable to the optical environment in classroom, Physical Experiment reliable results.
Accompanying drawing explanation
Fig. 1 is the structural perspective of an embodiment of the invention;
Fig. 2 is the structural representation of an embodiment of the invention;
Fig. 3 is the structural representation of an embodiment of the invention;
Fig. 4 is the structural drawing of chute in Fig. 3;
Fig. 5 is the structural representation of an embodiment of the invention;
Fig. 6 is the structural representation of an embodiment of the invention;
Fig. 7 is the structural representation of an embodiment of the invention;
Fig. 8 is the structural representation of an embodiment of the invention;
Fig. 9 is the structural representation of an embodiment of the invention;
Figure 10 is the structural representation of an embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the instructional device in Demonstrating Physics Experiment of the present invention is described in further detail, but not as a limitation of the invention.
Embodiment 1
Fig. 1 is the structural perspective of embodiments of the present invention 1, as shown in the figure, be fixed device 2 of background board 1 is fixing in the horizontal plane, thus ensure the upright of background board 1, wherein, background board 1 is for having rectangular thin plate structure, and wherein on vertical direction, one of two sides is display surface, be coated into light color or white, and print or be carved with the picture frame of focusing.Accumulator tank 3 is arranged on the lower limb of background board 1, for the bead dropped in recovery experiment process.
Also possess video camera (not shown) and computer (not shown) in addition, video camera is used for taking Physical Experiment process, computer is used for carrying out analysis and calculation according to the image data of shot by camera to Physical Experiment, also in experimentation, video camera can be connected with computer in addition, thus on computer monitor, live broadcasting is carried out to Physical Experiment.
Embodiment 2
Fig. 2 is the structural representation of embodiment 2, and for completing experiment with falling objects demonstration, the 26S Proteasome Structure and Function identical with embodiment 1 repeats no more.Electromagnet 21 is removably mounted on the coboundary of background board 1, and electromagnet 21 possesses driving circuit, and control the opening and closing of electromagnet 21, this driving circuit can be manual, also can be computer controlled.The permeability magnetic materials such as bead 22 is iron, firm are made, when electromagnet 21 is opened, adsorb by electromagnet 21, when electromagnet 22 is closed, then bead 21 falls in accumulator tank 3, thus completes the movement of falling object.
The instructional device for Demonstrating Physics Experiment of embodiment 2 is used for demonstration and analyzes experiment with falling objects, according to the image data of video camera, computer is utilized to depict movement locus, and the position of each tracing point can be read according to the scale on background board 1, and calculate the movement velocity of each tracing point.
Embodiment 3
Fig. 3 is the structural representation of embodiment 3, and for completing experiment of horizontal projectile motion demonstration, the 26S Proteasome Structure and Function identical with embodiment 2 with embodiment 1 repeats no more.As shown in the figure, the edge of background board 1 is provided with chute, this chute can be arranged on the lateral edges of background board 1, also can be arranged on the coboundary of background board 1, and the effect of chute is to bead 22 1 horizontal initial rates thus completes level throw motion.
Concrete composition graphs 4, chute possesses Part I 31 and Part II 32, and Part I 31 and Part II 32 can take hinged mode to be connected as shown in the embodiment, thus can regulate angle δ, also can be one-body molded.
When chute is arranged on the edge of background board 1, Part II 32 and surface level keeping parallelism, Part I 31 is δ with the angle of surface level, one end away from Part II 32 of Part I 31 is provided with electromagnet 21, for adsorbing bead 22 and discharging.
Present embodiment is used for carrying out level throw motion, after electromagnet 21 discharges bead 22, bead 22 obtains a horizontal initial rate when chute leaves Part II 32, and superpose the movement of falling object, thus complete level throw motion, after video camera photographs level throw motion, utilize computer analysis, depict the track that bead 22 does level throw motion, and calculate the speed of tracing point.
Embodiment 4
Fig. 5 is the structural representation of embodiment 4, for completing conservation of mechanical energy experimental demonstration, the 26S Proteasome Structure and Function identical with embodiment 2 with embodiment 1 repeats no more, as shown in Figure 5, slide bar 41 is fixed on the coboundary of background board 1, and cycloid folder 42 is clamped in the optional position on slide bar 51, for one end of fixing cycloid 43, the other end of cycloid 53 is connected with bead 22, and electromagnet 21 is arranged on the lateral edges of background board 1, for adsorbing bead 22.
During experiment, electromagnet 21 discharges bead, and bead drills cycloid motion, and video camera is taken its fortune merits and demerits journey, and is calculated by computer, can measure kinetic energy and the gravitional force of any point on tracing point accurately, thus draw the law of conservation of mechanical energy.
Embodiment 5
Fig. 6 is the structural representation of embodiment 5, for completing the vibration experiment demonstration of horizontal spring oscillator, the 26S Proteasome Structure and Function identical with embodiment 4 repeats no more, as shown in Figure 6, on vertical direction, bead 22 is clamped in the corresponding position of slide bar 41 by cycloid 43 and cycloid folder 42, in the horizontal direction, bead 22 is connected with the device for measuring force 53 being fixed on a background board lateral edges by the first spring 51, meanwhile, bead 22 is connected by the device for measuring force 54 of the second spring 52 with the opposite side edge being fixed on background board 1.The horizontal level of two device for measuring force is consistent, thus ensure bead 22 in swing process among a small circle close to tangential movement, to bead 22 1 horizontal initial rates, bead 22 completes horizontal vibration, to be taken by video camera and by computer for analysis and timing, the relations such as the spring ratio of research vibration period and quality, spring.In present embodiment, device for measuring force 53 and 54 have employed force snesor, also can use dynamometer, and in addition, bead 22 can adopt the counterweight in existing experimental provision to replace.
Embodiment 6
Present embodiment has been used for experiment with simple pendulum.As shown in Figure 7, adopt the vertical rod 41 identical with Fig. 5, Fig. 6, cycloid folder 42 and cycloid 43, bead 22 is clamped in the relevant position of vertical rod 41 by cycloid 43, to the initial angle of bead one with vertical direction during experiment, and taken by video camera, and by filmed image analytical calculation on computers, thus measure the later stage of albumen motion, the measured value of acceleration of gravity and study the relation of period of single pendulum and pendulum length.
Embodiment 7
Fig. 8 and the structural representation being present embodiment, present embodiment is the experimental provision of the synthesis Sum decomposition for completing motion.As shown in the figure, be provided with grooved rail 71 in the upper end of background board 1, grooved rail 71 keeps and level, and grooved rail 71 slides dolly 72.For the mode of traction of dolly, line traffic control mode as shown in the figure can be adopted, or other, dolly 72 is fixed with the slide bar 73 to downward-extension, slide bar 73 keeps and plane-parallel, and is arranged with slide block 74 on slide bar 73.Therefore, horizontal small car band movable slider 74 does tangential movement, simultaneously, slide block 74 does the motion of vertical direction on slide bar 73, movement locus is taken by video camera, and by Computer Analysis and the horizontal component velocity, the vertical component velocity that calculate on tracing point, thus understand the geometric relationship of motion and synthesis Sum decomposition.
The tangential movement of slide block 74 and vertical movement, driven by motor, has control circui, can independently carry out, and also can carry out by a key simultaneously.Limit switch ensure that the safety of the stroke of motion.
Embodiment 8
Fig. 9 is the structural representation for illustration of embodiment 8, this experiment is that as shown in Figure 9, track support 81 is fixed on background board 1 for demonstrating motion and acceleration, for supporting track 71, can the angle of adjustable track 71 and horizontal direction by adjustable track support 81.Device for measuring force 82 is connected with dolly 72 by fine rule, and trailer wagon moves on track 71, and tests tractive force used.Video camera is taken it, and draws moving of car track by computer, and tests acceleration and the speed of each point, the relation of research and tractive force.
Preferably, as shown in Figure 10, fixed pulley 83 can also be set, between dolly and device for measuring force 82, thus can ensure that the tractive force of dolly is parallel to track, more accurate experiment effect can be reached.
In present embodiment, device for measuring force 82 is force snesor, also can adopt dynamometer.
Above embodiment is only illustrative embodiments of the present invention, can not be used for limiting the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, these are revised or be equal to replacement and also should be considered as dropping in protection scope of the present invention.
Claims (10)
1., for demonstrating a physics facility for two dimensional surface motion, it is characterized in that, comprise:
Background board, described background board is light rectangular flat plate structure, and described background board has dismountable stationary installation, for vertically being fixed by described background board, described background board has the picture frame of focusing;
Video camera, for taking described Physical Experiment;
Computing machine, described computing machine is analyzed described Physical Experiment according to the image data of described shot by camera.
2. as claimed in claim 1 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise: electromagnet and drive unit, described electromagnet is arranged on the edge of described background board, described electromagnet can move along the edge of described background board, and described drive unit is for controlling startup and the cut out of described electromagnet; And bead, described bead is permeability magnetic material, for carrying out described Physical Experiment.
3. as claimed in claim 1 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise, electromagnet, bead and chute, described chute is removably fixed on the edge of described background board, initial velocity is provided for giving described bead, described chute possesses interconnective Part I and Part II, shown angle between Part I and Part II is adjustable, when described chute is fixed on described background board, described Part II and plane-parallel, described Part I described Part II one end is provided with point of fixity, for fixing described electromagnet.
4. as claimed in claim 2 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise vertical rod, cycloid folder and cycloid, described vertical rod is vertically fixed on the coboundary of described background board, one end of described cycloid is clamped in described vertical rod by cycloid, and the other end is connected with described bead.
5. as claimed in claim 4 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise spring and device for measuring force, described spring one end is connected with described bead, the other end is connected with described device for measuring force, and described device for measuring force is removably fixed on the edge of described background board.
6. as claimed in claim 1 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise: dolly and grooved rail, the dismountable coboundary being fixed on described background board of described grooved rail, and maintenance level, slide along described grooved rail for described dolly;
The slide block also comprising slide bar and be arranged on described slide bar, described slide bar to be fixed on described dolly and to keep described slide bar and horizontal plane, and described slide block set is located on described slide bar.
7. as claimed in claim 1 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise track support, track, dolly, device for measuring force, described track support is fixed on described background board, and for supporting described track and regulating the angle of described track and surface level, described dolly is connected by fine rule with described device for measuring force, for drawing described dolly, and measure tractive force.
8., as claimed in claim 7 for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, between described device for measuring force and described dolly, also be provided with fixed pulley, for ensureing the direction of described tractive force and described parallel track.
9. the physics facility for demonstrating two dimensional surface motion as described in claim 5 or 7, it is characterized in that, described device for measuring force is force snesor or dynamometer.
10., if claim 1 is for demonstrating the physics facility of two dimensional surface motion, it is characterized in that, also comprise accumulator tank, being arranged on the lower end of described background board.
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| CN201510399266.2A CN104966440A (en) | 2015-07-06 | 2015-07-06 | Physical experiment device for demonstrating two-dimensional motion |
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| CN201510399266.2A CN104966440A (en) | 2015-07-06 | 2015-07-06 | Physical experiment device for demonstrating two-dimensional motion |
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Cited By (8)
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| CN107342001A (en) * | 2017-09-16 | 2017-11-10 | 王昱辰 | A kind of high school physicses apparatus for demonstrating horizontal throw motion |
| CN107464480A (en) * | 2017-09-15 | 2017-12-12 | 薛哲宇 | A kind of new flat parabolic experimental apparatus for demonstrating |
| CN109036016A (en) * | 2018-08-27 | 2018-12-18 | 沈若驰 | A kind of physics facility with kinds of experiments function |
| CN109192010A (en) * | 2018-10-22 | 2019-01-11 | 安徽理工大学 | A kind of College Mathematics Teaching parabola demonstration teaching aid |
| CN109192009A (en) * | 2018-10-22 | 2019-01-11 | 安徽理工大学 | A kind of College Maths parabola teaching demonstration optimization method |
| CN109686198A (en) * | 2019-02-25 | 2019-04-26 | 韩嘉言 | A kind of pendulum motion experimental measurement method and system based on computer vision technique |
| CN109712490A (en) * | 2019-02-25 | 2019-05-03 | 韩嘉言 | A kind of change speed linear motion experimental measurement method and system based on computer vision technique |
| CN110930832A (en) * | 2019-12-11 | 2020-03-27 | 中国矿业大学 | Free vibration experimental device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107464480A (en) * | 2017-09-15 | 2017-12-12 | 薛哲宇 | A kind of new flat parabolic experimental apparatus for demonstrating |
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| CN109036016A (en) * | 2018-08-27 | 2018-12-18 | 沈若驰 | A kind of physics facility with kinds of experiments function |
| CN109192010A (en) * | 2018-10-22 | 2019-01-11 | 安徽理工大学 | A kind of College Mathematics Teaching parabola demonstration teaching aid |
| CN109192009A (en) * | 2018-10-22 | 2019-01-11 | 安徽理工大学 | A kind of College Maths parabola teaching demonstration optimization method |
| CN109192010B (en) * | 2018-10-22 | 2020-12-29 | 安徽理工大学 | University's mathematics teaching parabola demonstration teaching aid |
| CN109686198A (en) * | 2019-02-25 | 2019-04-26 | 韩嘉言 | A kind of pendulum motion experimental measurement method and system based on computer vision technique |
| CN109712490A (en) * | 2019-02-25 | 2019-05-03 | 韩嘉言 | A kind of change speed linear motion experimental measurement method and system based on computer vision technique |
| CN110930832A (en) * | 2019-12-11 | 2020-03-27 | 中国矿业大学 | Free vibration experimental device |
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Application publication date: 20151007 |