CN206039999U - Experimental device for be used for measuring acceleration of gravity - Google Patents
Experimental device for be used for measuring acceleration of gravity Download PDFInfo
- Publication number
- CN206039999U CN206039999U CN201620657296.9U CN201620657296U CN206039999U CN 206039999 U CN206039999 U CN 206039999U CN 201620657296 U CN201620657296 U CN 201620657296U CN 206039999 U CN206039999 U CN 206039999U
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- glass tubing
- connecting seat
- laser
- photogate
- experimental provision
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Abstract
The utility model provides an experimental device for be used for measuring acceleration of gravity, include the glass pipe, glass pipe upper end is provided with the export, and the export is sealed through the sealing plug, installs the electro -magnet on the sealing plug, and the upper end is managed through electric strength magnets at glass to the intraductal little steel ball of glass, and the current input and the main control unit electricity of electro -magnet are connected, the surface of glass pipe sets gradually a laser optoelectronic door, the 2nd laser optoelectronic door and the 3rd laser optoelectronic door with support fixed connection from top to bottom, the support bottom is provided with the base, it adjusts the foot to be provided with plane of the base plate on the base, a laser optoelectronic door, the 2nd laser optoelectronic door and the 3rd laser optoelectronic door are connected with the two -way electricity of main control unit, last very first time logging module and the second time logging module of being provided with of main control unit. The utility model discloses can once accomplish the measurement of experimental data, not only can reduce system error, but also improve experimental efficiency.
Description
Technical field
This utility model is related to a kind of experiment device for teaching, and in particular to a kind of experiment dress of teaching with measurement acceleration
Put, belong to teaching aid technical field in physics teaching.
Background technology
In physics teaching in secondary school, it is important instructional objectivess to acceleration mastery of knowledge, to acceleration of gravity
Measurement be also middle school physical experiment required part.Existing acceleration test device is typically accelerated by falling ball method measuring gravity
Degree, principle are simple, and experimentation is more directly perceived, and experimental provision of the prior art only arranges two light typically in descent path
Electric switch, during experiment, measures a distance of fall and fall time, then, changes the position of underlying photogate, repeats real
Test and record, as experiment is to carry out by several times, when the experiment of small ball second is fallen to first photogate speed with for the first time
It is not fully identical, it is easily caused generation error；On the other hand bead is made to fall and be fixed to the top of the glass tubing being squeezed after rise,
Then tested after again will be glass tubing upright, glass tubing needs to be inverted back and forth, cause to be not easy to make which perfect vertical when placing,
Easily there is the situation that bead bumps against glass inside pipe wall, also cause experiment error occur, even make the failure of an experiment, need again
Adjustment, so that conventional efficient is low.
Utility model content
This utility model overcomes the shortcomings of that prior art is present, and technical problem to be solved is：A kind of measurement knot is provided
The higher experimental provision for measuring acceleration of gravity of really accurate, easy to use, measurement efficiency.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is：It is a kind of to accelerate for measuring gravity
The experimental provision of degree, including glass tubing, the glass tubing upper end is provided with outlet, and the outlet is sealed by sealing-plug,
Electric magnet is installed on sealing-plug, the small ball in the glass tubing is adsorbed in the glass tubing upper end by the electric magnet,
The current input terminal of the electric magnet is electrically connected with master controller；The outer surface of the glass tubing is from top to bottom disposed with
One laser light electric switch, second laser photogate and the 3rd laser light electric switch；The first laser photogate, second laser photogate
It is fixedly connected with support with the 3rd laser light electric switch, the frame bottom is provided with base, is provided with base on the base and puts down
Face adjusts foot, the first laser photogate, second laser photogate and the 3rd laser light electric switch and master controller is two-way is electrically connected
Connect, on the master controller, be provided with very first time logging modle and the second time logging modle.
The first laser photogate includes the first connecting seat, first level line beam laser device and the first array received photoelectricity
Diode, first connecting seat are fixed between the glass tubing and the support, the first level line beam laser device and
The first array received photodiode is arranged on first connecting seat, and it is same to be located at the glass tubing both sides respectively
On horizontal line；The second laser photogate includes the second connecting seat, the second horizontal beam laser instrument and the second array received light
Electric diode, second connecting seat are fixed between the glass tubing and the support, the second horizontal beam laser instrument
It is arranged on second connecting seat with the second array received photodiode, and it is same to be located at the glass tubing both sides respectively
On one horizontal line；The 3rd laser light electric switch includes the 3rd connecting seat, the 3rd horizontal beam laser instrument and the 3rd array received
Photodiode, the 3rd connecting seat are fixed between the glass tubing and the support, the 3rd horizontal beam laser
Device and the 3rd array received photodiode are arranged on the 3rd connecting seat, and are located at the glass tubing both sides respectively
In same horizontal line.
The first level line beam laser device, the second horizontal beam laser instrument and the 3rd horizontal beam laser instrument
Control signal electrically connect with the outfan of the master controller, the first array received photodiode, described second
The signal output part of array received photodiode and the 3rd array received photodiode and the letter of the master controller
The electrical connection of number input.
First connecting seat, second connecting seat and the 3rd connecting seat are annular.
The glass tubing inner bottom part is provided with cushion pad.
Plumb device is provided with outside the glass tubing.
The glass tubing is made up of lucite.
Vacuum-pumping tube is additionally provided with the sealing-plug, and the vacuum-pumping tube is connected with the exhaust tube of vacuum pump.
This utility model is had the advantages that compared with prior art：
1st, by arranging three laser light electric switches and two time logging modles, the survey of experimental data can once be completed
Amount, not only reduces systematic error, and also improves conventional efficient；
2nd, the support by being fixedly connected with laser light electric switch is fixed to glass tubing, is on the one hand made of the present utility model
The structure of experimental provision is more stable, and on the other hand, adjusting foot by the base plane of frame bottom can erect to glass tubing
Straight degree is adjusted, and is adjusted to glass tubing substantially vertical, it is to avoid in experimentation, the accident of little ball impact glass tubing is sent out
It is raw, improve the success rate of experiment；
3rd, three laser light electric switches adopt array received photodiode, considerably increase photodiode and receive model
Enclose, the experimental provision is easily debugged, and its response speed is also more sensitive, further increases the precision of experiment.
Description of the drawings
Fig. 1 be the utility model proposes a kind of structural representation for measuring the experimental provision of acceleration of gravity；
Fig. 2 be the utility model proposes a kind of circuit connection diagram for measuring the experimental provision of acceleration of gravity.
Specific embodiment
It is for making the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiments and the drawings, right
The technical solution of the utility model is clearly and completely described, it is clear that described embodiment is one of the present utility model
Divide embodiment, rather than the embodiment of whole；Based on the embodiment in this utility model, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of making creative work, belongs to the scope of this utility model protection.
As shown in figure 1, the utility model proposes a kind of experimental provision for measuring acceleration of gravity, including glass tubing
1,1 upper end of the glass tubing is provided with outlet, and the outlet is sealed by sealing-plug 2, is provided with electric magnet on sealing-plug
21, the small ball 3 in the glass tubing is adsorbed in 1 upper end of the glass tubing, the electricity of the electric magnet 21 by the electric magnet 3
Stream input is electrically connected with master controller 4；The outer surface of the glass tubing 1 is from top to bottom disposed with first laser photogate
5th, second laser photogate 6 and the 3rd laser light electric switch 7；The first laser photogate 5, second laser photogate 6 and the 3rd
Laser light electric switch 7 is fixedly connected with support 8, and 8 bottom of the support is provided with base 81, is provided with base and puts down on the base 81
Face adjusts foot 82, and the bottom of the glass tubing 1 is fixedly installed on base 8, is provided with base plate plane and adjusts foot on the base 8
81, the first laser photogate 5, second laser photogate 6 and the 3rd laser light electric switch 7 is two-way with master controller 4 electrically connects,
Very first time logging modle 44 and the second time logging modle 45 is provided with the master controller 4.
Further, the first laser photogate 5 includes the first connecting seat 51, first level line beam laser device 52 and
An array receives photodiode 53, and first connecting seat 51 is fixed between the glass tubing 1 and the support 8, described
First level line beam laser device 52 and the first array received photodiode 53 are arranged on first connecting seat 52, and
It is located in 1 both sides same horizontal line of the glass tubing respectively；The second laser photogate 6 includes the second connecting seat 61, second
Horizontal beam laser instrument 62 and the second array received photodiode 63, second connecting seat 61 are fixed on the glass tubing 1
And the support 8 between, the second horizontal beam laser instrument 62 and the second array received photodiode 63 are arranged on
On second connecting seat 61, and it is located in 1 both sides same horizontal line of the glass tubing respectively；The 3rd laser light electric switch 7
Including the 3rd connecting seat 71, the 3rd horizontal beam laser instrument 72 and the 3rd array received photodiode 73, the 3rd connection
Seat 71 is fixed between the glass tubing 1 and the support 8, and the 3rd horizontal beam laser instrument 72 and the 3rd array connect
Receive photodiode 73 to be arranged on second connecting seat 71, and be located in 1 both sides same horizontal line of the glass tubing respectively.
Further, as shown in Fig. 2 the first level line beam laser device 52, the second horizontal beam laser instrument 62
Electrically connect with the outfan of the master controller 4 with the control signal of the 3rd horizontal beam laser instrument 72, described first
Array received photodiode 53, the second array received photodiode 63 and the 3rd array received photodiode
73 signal output part is electrically connected with the signal input part of the master controller 4.
A kind of course of work for measuring the experimental provision of acceleration of gravity of the present utility model is as follows：
(1) Preparatory work of experiment：Before experiment starts, make electric magnet 21 be powered by the electric magnet button 41 on controller 4 and produce
Magnetic, glass tubing 1 is inverted together with base 8, by electric magnet 21 when the bead 3 in glass tubing 1 is slipped to 1 upper end of glass tubing
Hold, then glass tubing is placed on desktop together with base 8 is upright, foot 81 is adjusted by the base plate plane on base 8
Adjusting glass tubing 1 makes which into vertical state；
(2) experiment starts：By the start button 42 on controller 4,21 dead electricity of electric magnet is made to lose magnetism, small ball does
The movement of falling object, meanwhile, the first level line beam laser device 52, the second horizontal beam laser instrument 62 and the described 3rd
Horizontal beam laser instrument 72 obtains electroluminescence, when small ball falls 5 place horizontal plane of first laser photogate, the first array received
Photodiode 53 produces the signal that is in the light, and the very first time logging modle and the second time logging modle in controller 4 starts
Timing；When small ball falls 6 place horizontal plane of second laser photogate, the second array received photodiode 63 is produced and is in the light
Signal, the very first time logging modle in controller 4 terminate timing, when small ball falls 7 place level of the 3rd laser light electric switch
During face, the 3rd array received photodiode 73 produces the signal that is in the light, and the second time logging modle in controller 4 terminates meter
When, meanwhile, very first time logging modle and the second time logging modle include time t1 and t2 that record is obtained in display screen
On 43.
(3) calculate：By tape measure go out the center of the first photogate and the center of the second photogate apart from h1, and
The center of the center of the first photogate and the 3rd photogate apart from h2, then basis
Can obtain,
Therefore, a kind of experimental provision for measuring acceleration of gravity of the present utility model, can once test and measure
The value of acceleration of gravity, makes bead back on top without being repeatedly inverted glass tubing, it is not required that the position of moving photoconductor door, experiment
Efficiency high；Also, due to once experiment can measure two groups of time datas, on the one hand avoid the timing tested twice it is initial when
Between bead speed it is different caused by experimental error, on the other hand, as bead a period of time of falling just starts timing, also avoid
Impact of the remanent magnetism after electric magnet power-off to bead speed, therefore systematic error is reduced, make the experimental result more accurate.
Further, first connecting seat 51, second connecting seat 62 and the 3rd connecting seat 63 can be circle
Annular, is bolted and is set on the glass tubing.
Further, 1 inner bottom part of the glass tubing is provided with cushion pad 11, can avoid bead hitting strongly to glass tubing
Hit.
Further, plumb device can be provided with outside the glass tubing, and plumb device is for the sight in adjusting base
The vertical situation of glass tubing 1 is examined, in case in experimentation, small ball strikes the inwall of glass tubing 1 when falling cause experiment to be lost
Lose.
Further, the glass tubing is made up of lucite.
Further, vacuum-pumping tube 22 can also be set on the sealing-plug, and the vacuum-pumping tube 22 is taken out with vacuum pump
Trachea connects, for being adjusted to the vacuum in glass tubing 1.
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but this utility model is not limited to
Embodiment is stated, in the ken that those of ordinary skill in the art possess, can be with without departing from this utility model objective
On the premise of various changes can be made.
Claims (8)
1. a kind of experimental provision for measuring acceleration of gravity, including glass tubing（1）, it is characterised in that the glass tubing（1）
Upper end is provided with outlet, and the outlet is by sealing-plug（2）Sealed, sealing-plug（2）On electric magnet is installed（21）, it is described
Small ball in glass tubing（3）By the electric magnet（3）Absorption is in the glass tubing（1）Upper end, the electric magnet（21）'s
Current input terminal and master controller（4）Electrical connection；The glass tubing（1）Outer surface be from top to bottom disposed with first laser
Photogate（5）, second laser photogate（6）With the 3rd laser light electric switch（7）；The first laser photogate（5）, second laser
Photogate（6）With the 3rd laser light electric switch（7）With support（8）It is fixedly connected, the support（8）Bottom is provided with base（81）,
The base（81）On be provided with base plane adjust foot（82）, the first laser photogate（5）, second laser photogate
（6）With the 3rd laser light electric switch（7）With master controller（4）Two-way electrical connection, the master controller（4）On be provided with the very first time
Logging modle and the second time logging modle.
2. a kind of experimental provision for measuring acceleration of gravity according to claim 1, it is characterised in that described first
Laser light electric switch（5）Including the first connecting seat（51）, first level line beam laser device（52）With two pole of the first array received photoelectricity
Pipe（53）, first connecting seat（51）It is fixed on the glass tubing（1）With the support（8）Between, the first level line
Beam laser instrument（52）With the first array received photodiode（53）It is arranged on first connecting seat（52）On, and respectively
Positioned at the glass tubing（1）In the same horizontal line of both sides；
The second laser photogate（6）Including the second connecting seat（61）, the second horizontal beam laser instrument（62）With the second array
Receive photodiode（63）, second connecting seat（61）It is fixed on the glass tubing（1）With the support（8）Between, institute
State the second horizontal beam laser instrument（62）With the second array received photodiode（63）It is arranged on second connecting seat
（61）On, and the glass tubing is located at respectively（1）In the same horizontal line of both sides；
The 3rd laser light electric switch（7）Including the 3rd connecting seat（71）, the 3rd horizontal beam laser instrument（72）With the 3rd array
Receive photodiode（73）, the 3rd connecting seat（71）It is fixed on the glass tubing（1）With the support（8）Between, institute
State the 3rd horizontal beam laser instrument（72）With the 3rd array received photodiode（73）It is arranged on the 3rd connecting seat
（71）On, and the glass tubing is located at respectively（1）In the same horizontal line of both sides.
3. a kind of experimental provision for measuring acceleration of gravity according to claim 2, it is characterised in that described first
Horizontal beam laser instrument（52）, the second horizontal beam laser instrument（62）With the 3rd horizontal beam laser instrument（72）Control
Input processed and the master controller（4）Outfan electrical connection, the first array received photodiode（53）, described
Two array received photodiodes（63）With the 3rd array received photodiode（73）Signal output part and the master
Controller（4）Signal input part electrical connection.
4. a kind of experimental provision for measuring acceleration of gravity according to claim 3, it is characterised in that described first
Connecting seat（51）, second connecting seat（62）With the 3rd connecting seat（63）For annular.
5. a kind of experimental provision for measuring acceleration of gravity according to claim 1, it is characterised in that the glass
Pipe（1）Inner bottom part is provided with cushion pad（11）.
6. a kind of experimental provision for measuring acceleration of gravity according to claim 1, it is characterised in that the glass
Pipe（1）Outside is provided with plumb device.
7. a kind of experimental provision for measuring acceleration of gravity according to claim 1, it is characterised in that the glass
Pipe（1）It is made up of lucite.
8. a kind of experimental provision for measuring acceleration of gravity according to claim 1, it is characterised in that the sealing
Vacuum-pumping tube is additionally provided with beyond the Great Wall（22）, the vacuum-pumping tube（22）It is connected with the exhaust tube of vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657296.9U CN206039999U (en) | 2016-06-28 | 2016-06-28 | Experimental device for be used for measuring acceleration of gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657296.9U CN206039999U (en) | 2016-06-28 | 2016-06-28 | Experimental device for be used for measuring acceleration of gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206039999U true CN206039999U (en) | 2017-03-22 |
Family
ID=58313228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620657296.9U Expired - Fee Related CN206039999U (en) | 2016-06-28 | 2016-06-28 | Experimental device for be used for measuring acceleration of gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206039999U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990446A (en) * | 2017-04-28 | 2017-07-28 | 张家安 | A kind of apparatus and method of measure physical parameters |
| CN108154765A (en) * | 2018-01-05 | 2018-06-12 | 宝鸡文理学院 | A kind of movement of falling object experimental provision |
| CN108682239A (en) * | 2018-08-16 | 2018-10-19 | 重庆市渝北区发明创新服务协会 | A kind of high school physics active experiment platform convenient for adjusting |
| CN110322761A (en) * | 2019-07-12 | 2019-10-11 | 衡阳师范学院 | A kind of Experiment of College Physics multiple function apparatus device |
| CN111354248A (en) * | 2019-11-29 | 2020-06-30 | 广东工业大学 | Gravitational acceleration measuring device |
| CN112802382A (en) * | 2021-02-02 | 2021-05-14 | 中国人民解放军国防科技大学 | Remote-controlled gravity acceleration physical experiment system |
| CN113970652A (en) * | 2021-10-20 | 2022-01-25 | 陕西鼎泰光宇科技有限公司 | Laser sensing simulation speed measurement method and system, computer equipment, terminal and medium |
| WO2022166834A1 (en) * | 2021-02-02 | 2022-08-11 | 中国人民解放军国防科技大学 | Remotely controllable gravitational acceleration physical experiment system |
-
2016
- 2016-06-28 CN CN201620657296.9U patent/CN206039999U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990446A (en) * | 2017-04-28 | 2017-07-28 | 张家安 | A kind of apparatus and method of measure physical parameters |
| CN108154765A (en) * | 2018-01-05 | 2018-06-12 | 宝鸡文理学院 | A kind of movement of falling object experimental provision |
| CN108682239A (en) * | 2018-08-16 | 2018-10-19 | 重庆市渝北区发明创新服务协会 | A kind of high school physics active experiment platform convenient for adjusting |
| CN110322761A (en) * | 2019-07-12 | 2019-10-11 | 衡阳师范学院 | A kind of Experiment of College Physics multiple function apparatus device |
| CN110322761B (en) * | 2019-07-12 | 2021-05-07 | 衡阳师范学院 | Multifunctional instrument device for college physical experiment |
| CN111354248A (en) * | 2019-11-29 | 2020-06-30 | 广东工业大学 | Gravitational acceleration measuring device |
| CN112802382A (en) * | 2021-02-02 | 2021-05-14 | 中国人民解放军国防科技大学 | Remote-controlled gravity acceleration physical experiment system |
| WO2022166834A1 (en) * | 2021-02-02 | 2022-08-11 | 中国人民解放军国防科技大学 | Remotely controllable gravitational acceleration physical experiment system |
| CN113970652A (en) * | 2021-10-20 | 2022-01-25 | 陕西鼎泰光宇科技有限公司 | Laser sensing simulation speed measurement method and system, computer equipment, terminal and medium |
| CN113970652B (en) * | 2021-10-20 | 2024-05-28 | 陕西鼎泰光宇科技有限公司 | Laser sensing simulation speed measuring method, system, computer equipment, terminal and medium |
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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: 20170322 Termination date: 20180628 |