CN105355119A - Horizontal projectile test method and device - Google Patents
Horizontal projectile test method and device Download PDFInfo
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- CN105355119A CN105355119A CN201510921931.XA CN201510921931A CN105355119A CN 105355119 A CN105355119 A CN 105355119A CN 201510921931 A CN201510921931 A CN 201510921931A CN 105355119 A CN105355119 A CN 105355119A
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- led
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- vertical plates
- circuit board
- light
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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
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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- Mathematical Optimization (AREA)
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Abstract
The invention relates to a horizontal projectile test trajectory description method and device for physics teaching. The device is composed of adjusting screws, a base, a vertical flat plate, light-emitting LEDs, a horizontal projectile track, a plumb line, a power supply switch, a 5V power supply input jack and a small magnetic ball; and the vertical flat plate is composed of a panel, a circuit board and a back plate; LED cavities and the light-emitting LEDs are disposed on the inner side of the panel, and the LEDs and Hall elements are installed on the circuit board. The device is characterized in that the light-emitting LEDs of the vertical flat plate are arranged to form plane two-dimensional coordinate grids and are placed in the corresponding cavities of the panel, the rear of each light-emitting LED is provided with one independent Hall element, each light-emitting LED is controlled by the corresponding Hall element, and a motion trajectory of the small magnetic ball is displayed by the light-emitting LEDs. The instrument has the advantages of simple operation, the clear trajectory and wide applications.
Description
Technical field
The present invention relates to a kind of physical teaching aid field, particularly relate to the method and apparatus that flat paraboloid movement locus describes experiment.
Background technology
Level throw motion is a kind of important object of which movement form, significant to the synthesis understanding motion, is provided with the experiment of research level throw motion in Physics Course.The movement locus experiment of present teaching, as flat throwing, tiltedly throwing, the movement of falling object, the method for employing has three kinds: one to be depict smooth lines by the mode such as high voltage, conductive paper, but weak effect, does not see, and conductive paper just use cost high, teacher generally need not, student more need not; Another kind is the method generally used now, it is thrown so that identical speed is repeatedly flat at phase co-altitude with small ball, often throw a baffle plate to rise a bit, utilize the gravity of steel ball to get ready on blank sheet of paper and transfer paper, by describing movement locus to point on blank sheet of paper and the line of point, analyzing its characteristic and finding out rule, its shortcoming is that instrument adjustment is complicated, troublesome poeration, experimental error is large, and easy deformed damaged; Three is the forms of observing little sphere path curve, nib is placed in the path of iron ball process, iron ball bumps against nib and then records a position, repeat experiment, obtain multiple position, couple together with smooth curve, obtain the flat track thrown, but cannot see the flat movement locus thrown intuitively, described point time error is also very large.And the flat instrument [Application Number (patent) CN201310631583.3] of throwing of the two dimension of patent applied for establishes XY infrared coordinate now, single-chip microcomputer is utilized to be connected with computer with software, achieve informationalized teaching needs, multimedia shows movement locus, but instrument cost is very high, complicated operation, be suitable only for teacher attend class demonstration or research use, student still intuitively can not see movement locus, and allows all students be not suitable for carry out experiment, is not suitable for promoting.
Summary of the invention
The object of the invention is: a kind of flat parabolic experimental instrument is provided, allow moving object the LED in place of process light, each LED lighted just shows object of which movement circuit, and student can the very clear method just can seeing movement locus of object of dishing out.
Technical scheme of the present invention is: this flat parabolic experimental device comprises adjustment screw (1), base (2), two vertical plates (3), planimetric coordinates grid panel (4), flat throwing track (5), weight line (6), power switch (7), 5V power input jack (8), backboard (9), Hall element (10), emitting led (11), printed circuit board (PCB) (12), LED chamber room (13), magnetic ball (14), permanent magnet (15); Two vertical plates (3) and base (2) are linked to be an entirety and mutually hammer into shape straight; Mounting and adjusting screw (1) below base (2); Flat track (5) of throwing is positioned at one jiao, two vertical plates (3) top; Weight line (6) is in the below of flat throwing track (5); Two vertical plates (3) is organized in aggregates by planimetric coordinates grid panel (4), middle printed circuit board (PCB) (12) and backboard below (9).
Described two vertical plates (3) forms a display screen by planimetric coordinates grid panel (4), printed circuit board (PCB) (12), backboard (9), chamber (13) is had between planimetric coordinates grid panel (4) and printed circuit board (PCB) (12), emitting led (11) correspondence is arranged in chamber, printed circuit board (PCB) (12) is equipped with the control circuit that emitting led (11) and Hall element (10) form.
The planimetric coordinates grid panel (4) of two vertical plates (3) is identical with the XY planimetric coordinates grid that the chamber (13) of printed circuit board (PCB) (12) and emitting led (11) are arranged in, and between chamber, light is independent of each other.
Emitting led (11) of two vertical plates (3) are arranged in planar two dimensional coordinate grid, and are placed in corresponding chamber (13).Each emitting led (11) have independently Hall element (10) to control below.
Magnetic ball (14) is the moulding one-tenth of strip (or aciculiform) permanent magnet (15) project to outsource, and plastics are shared out bonus blue dichromatism, respectively the NS pole of respective magnet, and identifies NS pole, and the size of magnet poles size should be less than the size of luminophor LED.
Base (2) is provided with power switch (7), 5V power input jack (8).
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of two vertical plates of the present invention;
Fig. 3 is the structural representation of magnetic ball of the present invention.
Concrete enforcement:
Concrete case study on implementation 1
Base (2) bottom is provided with the adjustment screw (1) supporting described base (2).Adjustment base screw, observes weight line, upper and lower toe alignment, dull and stereotyped setting.Adjustment is flat throws track, allows bead energy level dish out.
Circuit part, LED ruddiness 5730 paster, utilizes the locking-typed Hall switch HAL41F of bipolarity to start.The S pole of bead is towards panel, and bead and panel are very close, when bead rolls down along two vertical plates, process path on Hall switch be subject to induction start, LED is bright, demonstrates the track of dishing out of bead, and paper using covers to get on just to draw bead movement locus and analyzed.Also can directly analyze and research with the planimetric coordinates that face onboard led is formed.To reform after removing track or power-off restarting with the N pole of bead experiment.
Adjustment is flat throws track, and it can be allowed to form inclined throw movements.
Concrete case study on implementation 2
Two vertical plates horizontal positioned, allows bead move in a circle in the plane, and after centripetal force loses, bead centrifugal motion track is tested.
The protection domain of flat parabolic experimental instrument of the present invention is not by the selection of LED size, color, quantity and Hall switch in embodiment, the restriction of installation site, in length and breadth size; if occur only size or LED quantity, color and Hall element switch being changed, such change still belongs to protection scope of the present invention.
Claims (4)
1. flat parabolic experimental method and a device, is characterized in that: comprise adjustment screw (1), base (2), two vertical plates (3), planimetric coordinates grid panel (4), flat throwing track (5), weight line (6), power switch (7), 5V power input jack (8), backboard (9), Hall element (10), emitting led (11), printed circuit board (PCB) (12), LED chamber room (13), magnetic ball (14), permanent magnet (15); Two vertical plates (3) and base (2) are linked to be an entirety and mutually hammer into shape straight; Mounting and adjusting screw (1) below base (2); Flat track (5) of throwing is positioned at one jiao, two vertical plates (3) top; Weight line (6) is in the below of flat throwing track (5); Two vertical plates (3) is formed a whole by planimetric coordinates grid panel (4), middle printed circuit board (PCB) (12) and backboard (9).
2. flat parabolic experimental method according to claim 1 and device is characterized in that: the planimetric coordinates grid panel (4) of described two vertical plates (3) is transparent material, planimetric coordinates grid panel (4) is with LED chamber room (13), LED chamber room (13) is arranged in XY planimetric coordinates grid panel (4), lighttight between each chamber, corresponding installation emitting led (11) in each chamber; The printed circuit board (PCB) (12) of described two vertical plates (3) is placed between planimetric coordinates grid panel (4) and backboard (9).
3. flat parabolic experimental method according to claim 1 and device, is characterized in that: described printed circuit board (PCB) (12) is equipped with emitting led (11), opposite side installs Hall element (10).
4. flat parabolic experimental method according to claim 1 and device, is characterized in that: described magnetic ball (14) is placed in engineering plastics by permanent magnet (15) and forms, outer point two kinds of colors, in the appearance mark NS pole of bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921931.XA CN105355119A (en) | 2015-12-14 | 2015-12-14 | Horizontal projectile test method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510921931.XA CN105355119A (en) | 2015-12-14 | 2015-12-14 | Horizontal projectile test method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105355119A true CN105355119A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510921931.XA Pending CN105355119A (en) | 2015-12-14 | 2015-12-14 | Horizontal projectile test method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105355119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
-
2015
- 2015-12-14 CN CN201510921931.XA patent/CN105355119A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN106898203B (en) * | 2017-04-28 | 2019-04-12 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |