CN106448365B - A kind of Physical Experiment apparatus for demonstrating and method - Google Patents
A kind of Physical Experiment apparatus for demonstrating and method Download PDFInfo
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- CN106448365B CN106448365B CN201611115595.0A CN201611115595A CN106448365B CN 106448365 B CN106448365 B CN 106448365B CN 201611115595 A CN201611115595 A CN 201611115595A CN 106448365 B CN106448365 B CN 106448365B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/14—Measuring gravitational fields or waves; Gravimetric prospecting or detecting using free-fall time
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Abstract
A kind of Physical Experiment apparatus for demonstrating and method, including pedestal and the stepped station being set on pedestal, wherein stepped station sets gradually first from high to low, two, three, four steps, the step surface of first step, which is set on rear side of the postnotum of stepped station, to extend outwardly, second, three, the step surface of four steps is set to the front side of the postnotum of stepped station, and step side of the part of the postnotum of stepped station as first step, first, two, three, the step surface of four steps is respectively with first, two, three, the step side of four steps constitutes corresponding step, it being capable of automatic demonstrating, it is intuitive to show, and improve measurement accuracy.
Description
Technical field
The present invention relates to Physical Experiment fields, and in particular to a kind of Physical Experiment apparatus for demonstrating and method.
Background technique
Currently, Physical Experiment need teacher mostly operate demonstration, demonstration influenced by operating environment it is bigger, and
Reproducibility is poor, and the experience sense of student is poor.In traditional free-fall testing, usually teacher by the bead of different quality from
Sustained height is put down, and bead lands that then to demonstrate the quality of the speed of object fall with itself unrelated simultaneously, however this is drilled
Show that mode is often limited to space, i.e., just completed in very short distance of fall, is difficult significantly more efficient to show this object
Manage phenomenon.
For the year, Galileo at the uniform velocity changes to verify the speed of the movement of falling object, the speed and object of object fall
The weight of body is unrelated, and the speed of object fall and time are directly proportional, square this directly proportional physics of drop and time
Phenomenon is limited to scientific and technological level at that time, can only complete on the building that Piza Tower has certain altitude in this way.However,
Now with the progress of science and technology, electronic measuring technique means are continued to develop, and measurement sensitivity and precision also constantly improve,
Realize that the measurement demonstration of freely falling body is possibly realized with electronically, but free fall experimental device most at present is all
It is only to show this phenomenon by the way of the operation of classroom, the initiative of student is not mobilized, operating error
Greatly, the degree of automation is low.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can automatic demonstrating, it is intuitive to show, and
Improve the Physical Experiment apparatus for demonstrating and method of measurement accuracy.
The present invention provides a kind of Physical Experiment apparatus for demonstrating, including pedestal and the stepped operation being set on pedestal
Platform, wherein stepped station sets gradually the first, second, third and fourth step from high to low, the step surface of first step is set to rank
Extend outwardly on rear side of the postnotum of ladder type station, second and third, after the step surfaces of four steps is set to stepped station
The front side of backboard, and step side of the part of the postnotum of stepped station as first step, first, second, third and fourth
The step surface of step step corresponding with the step side of the first, second, third and fourth step composition respectively；First, second, third and fourth step
Step side have different setting height, be denoted as S1, S2, S3 and S4 respectively, and known to S1, S2, S3 and S4；
Fan, the step surface and step side of first step is respectively set in the lower end of the step side of first, second and third step
Baffle is arranged in the part of intersection；
The step surface of each step and the intersection of step side are correspondingly arranged on through sensing sensor, Yi Jifen
Not second and third, the timing measuring unit that is arranged on four step surfaces and base upper surface；Timing measuring unit include timer and
Measuring unit, controller receive the timer initiation controlled after signal in corresponding timing measuring unit, and timer starts to count
When, when corresponding measuring unit, which measures bead, falls on step surface, corresponding timer stops timing, and timing result is sent
To controller, timing result is sent to display after controller processing and is shown；
Display is connect with controller respectively by sensing sensor, start button, driving unit, timing unit, and driving is single
Member is also respectively connected with fan and baffle, the opening and closing of power and baffle for controlling fan.
Preferably, the step surface of first step is groove structure.
Preferably, the step surface of the first, second, third and fourth step has certain tilt angle.
It preferably, is pressure sensor by sensing sensor.
The present invention also provides a kind of acceleration of gravity measurement methods using Physical Experiment apparatus for demonstrating, successively include such as
Lower step:
(1) bead is placed on the table top of first step, initiation command is sent to processor, processor by start button
After receiving initiation command, control driving unit simultaneously opens baffle and the corresponding fan of the first, second and third step；
(2) corresponding to start to measure by sensing sensor and timing measuring unit, and measurement result is sent to control
Device；
(3) controller receives measurement result, obtains bead respectively after treatment in the platform of the first, second, third and fourth step
The fall time T1, T2, T3, T4 of rank side；
(3) using the height value S1, S2, S3 and S4 of the step side of the first, second, third and fourth step and bead the
One, fall time T1, T2, T3, the T4 of the step side of two, three, four steps, by following formula calculate separately to obtain it is each under
Fall time corresponding gravity acceleration value: g=2S/t2, wherein S is the height of drop of bead, and t is bead in corresponding height of drop
Time；
(4) the first measurement gravity is obtained after respectively doing the calculated value for 4 acceleration of gravity that step (3) obtains averagely to add
Speed；
(5) bead for selecting different quality, repeats step (1)-(4), obtains the second measurement acceleration of gravity；
(6) using the average value of the first measurement acceleration and the second measurement acceleration as the acceleration of gravity finally measured.
Physical Experiment apparatus for demonstrating of the invention and method, may be implemented:
1) automatic complete physical experimental demonstration, and intuitively show；
2) measurement method automated, so that the completion that whole process not only automates, and measurement has accurately been tested,
It improves because of error caused by manual operation etc.；
3) apparatus structure is simple, easy to operate.
Detailed description of the invention
Fig. 1 is Physical Experiment apparatus for demonstrating structural schematic diagram；
Fig. 2 is Physical Experiment apparatus for demonstrating electric connection structure schematic diagram.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of Physical Experiment apparatus for demonstrating, as shown in Figure 1, apparatus for demonstrating includes pedestal 1, and setting
In the stepped station 2 on pedestal 1, wherein stepped station 2 sets gradually the first, second, third and fourth step from high to low,
Wherein the step surface of first step is set on rear side of the postnotum of stepped station 2 and extends outwardly, and first step
Step surface has a groove structure 4, so that bead 9 will not fall off when placing；Second and third, the step surfaces of four steps be set to rank
The front side of the postnotum of ladder type station 2, and step side of the part of the postnotum of stepped station 2 as first step
Face, the step surface of the first, second, third and fourth step step corresponding with the step side of the first, second, third and fourth step composition respectively,
And the step surface of the first, second, third and fourth step has certain tilt angle, and in order to avoid experimental error, tilt angle is set
It sets and wants relatively small.The step side of first, second, third and fourth step has different setting height, is denoted as S1 respectively, S2, S3 and
S4, and known to S1, S2, S3 and S4.
The important setting of the present invention one is exactly that fan is respectively set in the lower end of the step side of the first, second and third step
3, in this way in 9 dropping process of bead, fall on instantly ledge surface it is inadequate due to the power of horizontal direction when, so that it may pass through control
The wind-force of fan 3 comes in the horizontal direction to 9 applied force of bead, but does not influence the decline of bead 9 in vertical direction simultaneously
Speed, so that experiment can be automatically complete, it is no longer necessary to manual intervention.Step surface and the step side intersection of first step
Part setting baffle 5, to prevent at the beginning of testing not yet, bead 9 voluntarily glides, then when experiment starts
It waits, it is only necessary to bead is placed on the step surface of first step, then press start button 10, so that it may the opening of baffle 5 is controlled,
Bead 9 voluntarily starts to fall.
The step surface of each step and the intersection of step side are correspondingly arranged on through sensing sensor 7, and
Respectively second and third, the timing measuring unit 6 that is arranged on 1 upper surface of four step surfaces and pedestal, wherein passing through sensing sensor 7
It can be pressure sensor, then measuring pressure letter by sensing sensor 7 when bead passes through through sensing sensor 7
Number.Timing measuring unit 6 includes timer and measuring unit, and controller controls corresponding timing measuring unit after receiving signal
Timer initiation in 6, timer start timing, corresponding when corresponding measuring unit, which measures bead, falls on step surface
Timer 6 stops timing, and timing result is sent to controller, after controller processing by timing result be sent to display 8 into
Row display.
Fig. 2 is Physical Experiment apparatus for demonstrating electrical connection schematic diagram of the invention, as shown in Fig. 2, display, being passed by sensing
Sensor, start button, driving unit, timing unit are connect with controller respectively, and driving unit is also respectively connected with fan and baffle, are used
In the opening and closing of the power and baffle of control fan.
The present invention also provides a kind of acceleration of gravity measurement methods based on Physical Experiment apparatus for demonstrating, successively include such as
Lower step:
(1) bead is placed on the table top of first step, initiation command is sent to processor, processor by start button
After receiving initiation command, control driving unit simultaneously opens baffle and the corresponding fan of the first, second and third step；
(2) corresponding to start to measure by sensing sensor and timing measuring unit, and measurement result is sent to control
Device；
(3) controller receives measurement result, obtains bead respectively after treatment in the platform of the first, second, third and fourth step
The fall time T1, T2, T3, T4 of rank side；
(3) using the height value S1, S2, S3 and S4 of the step side of the first, second, third and fourth step and bead the
One, fall time T1, T2, T3, the T4 of the step side of two, three, four steps, by following formula calculate separately to obtain it is each under
Fall time corresponding gravity acceleration value: g=2S/t2, wherein S is the height of drop of bead, and t is bead in corresponding height of drop
Time；
(4) the first measurement gravity is obtained after respectively doing the calculated value for 4 acceleration of gravity that step (3) obtains averagely to add
Speed；
(5) bead for selecting different quality, repeats step (1)-(4), obtains the second measurement acceleration of gravity；
(6) using the average value of the first measurement acceleration and the second measurement acceleration as the acceleration of gravity finally measured.
In this way, not only can be and more different small by comparing correspondence fall time T1, T2, T3, the T4 of different beads
The acceleration of gravity of the corresponding measurement of ball come the speed that proves object fall during freely falling body it is unrelated with the weight of object this
Physical phenomenon can also complete the calculating of acceleration of gravity, so that student not only can be intuitive by the measurement means of electronization
Observation, can also start calculate verifying, increase interactivity.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of Physical Experiment apparatus for demonstrating, it is characterised in that: including pedestal and the stepped station being set on pedestal,
Wherein stepped station sets gradually the first, second, third and fourth step from high to low, and the step surface of first step is set to ladder
Extend outwardly on rear side of the postnotum of type station, second and third, the step surfaces of four steps be set to the back of stepped station
The front side of plate, and step side of the part of the postnotum of stepped station as first step, first, second, third and fourth
The step surface of rank step corresponding with the step side of the first, second, third and fourth step composition respectively；First, second, third and fourth step
Step side has different setting height, is denoted as S1, S2, S3 and S4 respectively, and known to S1, S2, S3 and S4；
Fan, step surface and the step side intersection of first step is respectively set in the lower end of the step side of first, second and third step
Part be arranged baffle；
The step surface of each step and the intersection of step side are correspondingly arranged on through sensing sensor, and exist respectively
Second and third, the timing measuring unit being arranged on four step surfaces and base upper surface；Timing measuring unit includes timer and measurement
Unit, controller receive the timer initiation controlled after signal in corresponding timing measuring unit, and timer starts timing, when
When corresponding measuring unit measures bead and falls on step surface, corresponding timer stops timing, and timing result is sent to control
Timing result is sent to display after controller processing and shown by device processed；
Display is connect with controller respectively by sensing sensor, start button, driving unit, timing unit, and driving unit is also
It is separately connected fan and baffle, the opening and closing of power and baffle for controlling fan.
2. Physical Experiment apparatus for demonstrating as described in claim 1, it is characterised in that: the step surface of first step is groove knot
Structure.
3. Physical Experiment apparatus for demonstrating as described in claim 1, it is characterised in that: the step surface of the first, second, third and fourth step
With certain tilt angle.
4. Physical Experiment apparatus for demonstrating as described in any one of claims 1-3, it is characterised in that: by sensing sensor be pressure
Force snesor.
5. a kind of acceleration of gravity measurement method using such as above-mentioned Physical Experiment apparatus for demonstrating as claimed in claim 4, special
Sign is, in turn includes the following steps:
(1) bead is placed on the table top of first step, initiation command is sent to processor by start button, processor receives
To after initiation command, control driving unit simultaneously opens baffle and the corresponding fan of the first, second and third step；
(2) corresponding to start to measure by sensing sensor and timing measuring unit, and measurement result is sent to controller；
(3) controller receives measurement result, obtains bead respectively after treatment in the step side of the first, second, third and fourth step
The fall time T1, T2, T3, T4 in face；
(3) using the height value S1, S2, S3 and S4 and bead of the step side of the first, second, third and fourth step first and second,
Three, fall time T1, T2, T3, the T4 of the step side of four steps calculates separately to obtain each fall time by following formula
Corresponding gravity acceleration value: g=2S/t2, wherein S is the height of drop of bead, t be bead corresponding height of drop when
Between；
(4) the first measurement gravity is obtained after respectively doing the calculated value for 4 acceleration of gravity that step (3) obtains averagely to accelerate
Degree；
(5) bead for selecting different quality, repeats step (1)-(4), obtains the second measurement acceleration of gravity；
(6) using the average value of the first measurement acceleration and the second measurement acceleration as the acceleration of gravity finally measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611115595.0A CN106448365B (en) | 2016-12-07 | 2016-12-07 | A kind of Physical Experiment apparatus for demonstrating and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611115595.0A CN106448365B (en) | 2016-12-07 | 2016-12-07 | A kind of Physical Experiment apparatus for demonstrating and method |
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| Publication Number | Publication Date |
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| CN106448365A CN106448365A (en) | 2017-02-22 |
| CN106448365B true CN106448365B (en) | 2019-05-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884380Y (en) * | 2006-01-27 | 2007-03-28 | 屠步华 | Multi-functional projectile motion research apparatus |
| CN204720048U (en) * | 2015-07-03 | 2015-10-21 | 陶金铭 | Level throw motion experimental device for verifying |
| CN105528942A (en) * | 2016-01-27 | 2016-04-27 | 浙江大学城市学院 | Motion pattern research experimental instrument for horizontal projectile steel ball |
| CN106128238A (en) * | 2016-09-07 | 2016-11-16 | 郭金虎 | A kind of movement of falling object still image experiment instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024728A (en) * | 2005-07-19 | 2007-02-01 | Shimizu Corp | Ground investigation device |
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- 2016-12-07 CN CN201611115595.0A patent/CN106448365B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884380Y (en) * | 2006-01-27 | 2007-03-28 | 屠步华 | Multi-functional projectile motion research apparatus |
| CN204720048U (en) * | 2015-07-03 | 2015-10-21 | 陶金铭 | Level throw motion experimental device for verifying |
| CN105528942A (en) * | 2016-01-27 | 2016-04-27 | 浙江大学城市学院 | Motion pattern research experimental instrument for horizontal projectile steel ball |
| CN106128238A (en) * | 2016-09-07 | 2016-11-16 | 郭金虎 | A kind of movement of falling object still image experiment instrument |
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| CN106448365A (en) | 2017-02-22 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Youming Inventor after: Hua Haozhe Inventor before: Hua Haozhe |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190425 Address after: Room 1005, Block B, 18 Zhongguancun Street, Haidian District, Beijing Applicant after: High tech Moore (Beijing) Education Technology Co., Ltd. Address before: 271100 Fengcheng Senior High School, Laiwu City, Shandong Province Applicant before: Hua Haozhe |
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| 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: 20190524 Termination date: 20191207 |