CN203444673U - Gravitational acceleration measuring and demonstrating device - Google Patents
Gravitational acceleration measuring and demonstrating device Download PDFInfo
- Publication number
- CN203444673U CN203444673U CN201320595098.0U CN201320595098U CN203444673U CN 203444673 U CN203444673 U CN 203444673U CN 201320595098 U CN201320595098 U CN 201320595098U CN 203444673 U CN203444673 U CN 203444673U
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- gravitational acceleration
- acceleration
- hollow shell
- sphere
- bluetooth
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Abstract
The utility model discloses a gravitational acceleration measuring and demonstrating device. The gravitational acceleration measuring and demonstrating device comprises (a) a sphere of which the lower hemisphere is a solid body casted by a metal material, and the upper hemisphere is a hollow shell and is manufactured by an engineering plastic, wherein the lower hemisphere and the upper hemisphere hollow shell are connected via screw threads, and an acceleration measurement and bluetooth emission circuit is placed in the hollow shell; (b) a computer with a bluetooth function. When the gravitational acceleration measuring and demonstrating device demonstrates, the sphere is placed at a certain height, so that the sphere falls freely from a stationary state; while the sphere falls freely, the computer real-timely receives the acceleration numerical values transmitted by the bluetooth in the sphere and displays the numerical values on a screen. The beneficial effects of the utility model are that: the gravitational acceleration measuring and demonstrating device can measure and demonstrate the gravitational acceleration visually and conveniently during the free falling process in the physics lesson teaching, enables the students to grasp the physical conception of the gravitational acceleration easily and the teaching quality to be improved.
Description
Technical field
The utility model relates to a kind of physics teaching demonstration apparatus, is specifically related to a kind of acceleration of gravity and measures apparatus for demonstrating.
Background technology
Acceleration of gravity is an important physical concept and physical quantity, acceleration of gravity experiments of measuring is the Physical Experiment that senior middle school and university must do, adopt at present experimental technique to have: electromagnetic shooting point timer method, single pendulum method, freely falling body (photoelectricity door) method etc., during experiment, need to measure the related physical quantities such as distance, time, according to correlation formula, calculate acceleration of gravity numerical value again, experimentation is more complicated, and error is larger, is not suitable at physics lesson classroom teaching as lecture experiment.
Utility model content
The purpose of this utility model is to solve Physics Classroom Teaching to lack the technical matters that acceleration of gravity is measured demonstration equipment, provide a kind of can be for the apparatus to gravity acceleration analysis demonstration in senior middle school and College Physics Class.
To achieve these goals, the utility model adopts following technical scheme:
Measure an apparatus for demonstrating, it is characterized in that comprising:
(a) spheroid, lower semisphere is solid, adopts metal material casting; Episphere is hollow shell, adopts engineering plastics manufacture; Lower semisphere and episphere hollow shell are threaded connection; In episphere hollow shell, lay measurement radiating circuit; Described measurement radiating circuit is comprised of acceleration transducer, single-chip microcomputer, bluetooth module, and acceleration transducer and bluetooth module are connected with single-chip microcomputer respectively;
(b) with the computing machine of Bluetooth function, the accekeration spreading out of for receiving display measurement radiating circuit.
Preferably, the metal material that described the latter half spheroid adopts is plumbous.
Preferably, described measurement radiating circuit underneath is equipped with Rubber shock-absorbing pad.
The beneficial effects of the utility model: can be intuitively, the size of acceleration of gravity in physics lesson classroom teaching demonstration freely falling body dropping process easily, make student easily grasp the physical concept of acceleration of gravity, improve the quality of teaching.
Accompanying drawing explanation
Fig. 1 is sphere structure schematic diagram of the present utility model;
Fig. 2 is the structural representation after spheroid of the present utility model upper and lower part separation;
Fig. 3 is electric theory diagram of the present utility model;
In figure, 1: the latter half spheroid, 2: episphere hollow shell, 3: measure radiating circuit, 4: Rubber shock-absorbing pad, 5: with the computing machine of bluetooth.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Sphere structure signal of the present utility model is as accompanying drawing 1,2.During enforcement, the optional 6～8cm of sphere diameter; Lower semisphere 1 is solid, adopts the metal material castings such as cast iron, cast steel or zinc, lead, surface finish; Episphere hollow shell 2 adopts engineering plastics manufacture, thickness of shell 4mm, and the engineering plastics of preferably clear, to can see measurement radiating circuit 3 in ball.Rubber shock-absorbing pad 4 thickness that measurement radiating circuit 3 is placed are below 5mm.
Accompanying drawing 3 is the electric theory diagrams of device of the present utility model.During enforcement, measure acceleration transducer in radiating circuit 3 and can adopt single-axis acceleration sensors ADXL103, single-chip microcomputer can adopt the single-chip microcomputer of integrated A/D converter and serial line interface, and bluetooth module is selected the bluetooth module with serial ports; In addition, measure radiating circuit 3 and adopt powered battery, at episphere hollow shell 2 tops, power switch is installed.
In accompanying drawing 3, with the computing machine 5 of bluetooth, can select the notebook computer with Bluetooth function, or the external Bluetooth adapter of common desktop PC; Also can adopt panel computer, smart mobile phone with bluetooth.
Measurement demenstration method of the present utility model is as follows:
1. the sponge of thickness of lay more than 5cm on the ground, is placed in the above height in 1.2 meters of sponge tops by described spheroid;
2. open and measure radiating circuit 3 power switches, make spheroid from static beginning free-falling, the signal of measuring the output of single-chip microcomputer timing acquiring acceleration transducer in radiating circuit 3 in dropping process, calculates the numerical value of fall of ball acceleration, and will speed up number of degrees value and launch by bluetooth module;
3. in spheroid free-falling, computing machine 5 receives by bluetooth the acceleration value that in ball, bluetooth module spreads out of in real time, is presented on screen.
Claims (3)
1. acceleration of gravity is measured an apparatus for demonstrating, it is characterized in that comprising:
(a) spheroid, lower semisphere (1) is solid, adopts metal material casting; Episphere is hollow shell (2), adopts engineering plastics manufacture; Lower semisphere (1) is threaded connection with episphere hollow shell (2); In episphere hollow shell (2), lay and measure radiating circuit (3); Described measurement radiating circuit (3) is comprised of acceleration transducer, single-chip microcomputer, bluetooth module, and acceleration transducer and bluetooth module are connected with single-chip microcomputer respectively;
(b) with the computing machine (5) of Bluetooth function, the accekeration spreading out of for receiving display measurement radiating circuit (3).
2. a kind of acceleration of gravity according to claim 1 is measured apparatus for demonstrating, it is characterized in that, the metal material that described the latter half spheroid (1) adopts is plumbous.
3. a kind of acceleration of gravity according to claim 1 is measured apparatus for demonstrating, it is characterized in that, described measurement radiating circuit (3) underneath is equipped with Rubber shock-absorbing pad (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595098.0U CN203444673U (en) | 2013-09-26 | 2013-09-26 | Gravitational acceleration measuring and demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595098.0U CN203444673U (en) | 2013-09-26 | 2013-09-26 | Gravitational acceleration measuring and demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444673U true CN203444673U (en) | 2014-02-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595098.0U Expired - Fee Related CN203444673U (en) | 2013-09-26 | 2013-09-26 | Gravitational acceleration measuring and demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456209A (en) * | 2013-09-26 | 2013-12-18 | 南京财经大学 | Gravitational acceleration measurement demonstration device and method |
-
2013
- 2013-09-26 CN CN201320595098.0U patent/CN203444673U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456209A (en) * | 2013-09-26 | 2013-12-18 | 南京财经大学 | Gravitational acceleration measurement demonstration device and method |
| CN103456209B (en) * | 2013-09-26 | 2015-09-30 | 南京财经大学 | A kind of acceleration of gravity measures apparatus for demonstrating and demenstration method |
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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 |
Granted publication date: 20140219 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |