CN201278224Y - Gravity acceleration determinator - Google Patents
Gravity acceleration determinator Download PDFInfo
- Publication number
- CN201278224Y CN201278224Y CNU2008201234891U CN200820123489U CN201278224Y CN 201278224 Y CN201278224 Y CN 201278224Y CN U2008201234891 U CNU2008201234891 U CN U2008201234891U CN 200820123489 U CN200820123489 U CN 200820123489U CN 201278224 Y CN201278224 Y CN 201278224Y
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- China
- Prior art keywords
- light barrier
- gravitational acceleration
- digital millisecond
- tester
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a gravitational acceleration tester which relates to a teaching instrument and is suitable for testing gravitational acceleration. The gravitational acceleration tester comprises two photoelectric doors (2) fixed on a bracket (3), a digital millisecond meter (1) and a light barrier, wherein the two photoelectric doors (2) are electrically connected with the digital millisecond meter (1); the lower part of the light barrier is provided with a quadrate hole; and the digital millisecond meter (1) uses a step a. When the gravitational acceleration tester is used for testing, the light barrier freely releases from the upper part of the photoelectric door which is near the top end of the bracket, and the numerical value of gravitational acceleration is read from the step a of the digital millisecond meter. The tester has the advantages that falling bodies are convenient to collect, an adsorption plant is not needed, complicated calculation does not need, and inaccuracy is reduced to 0.01 percent to 0.05 percent from original 9.5 percent. The gravitational acceleration tester not only shortens the experiment time, reduces the experiment workload and largely reduces the testing error, but also is simplified.
Description
Technical field
The utility model relates to a kind of instruments used for education, is applicable to that measuring gravity quickens.
Background technology
It is that falling bodies, electromagnet or air bag come acceleration of gravity is measured for the falling bodies adsorbent equipment that the equipment of existing mensuration acceleration of gravity all adopts sphere.Sphere is difficult to collect after landing as falling bodies, often causes falling bodies to lose; And make that sphere is that falling bodies vertically land through two photogate, will be to instrument through regulating repeatedly, difficulty is very big; In addition, the electromagnet adsorbent equipment can be because remanent magnetism and to experimental result, promptly experimental error makes a big impact; The air bag adsorbent equipment brings very big vibration can for whole device, makes experiment to carry out.Existing measuring instrument need read scale is surveyed on the support the difference in height and the reading of millisecond meter, and common substitution formula is calculated, and calculated amount is big, exists and calculates accuracy problem.
Real novel content
Technical problem to be solved in the utility model is, overcomes the problem that prior art exists, and a kind of acceleration of gravity analyzer is provided.
The technical solution of the utility model:
A kind of acceleration of gravity analyzer, it comprises: be fixed on two photogate, digital millisecond counter and light barriers on the support, two photogate are electrically connected with digital millisecond counter; An oblong aperture is established in the light barrier below; Digital millisecond counter uses a shelves.During measurement, the top of light barrier from the photogate of close cantilever tip freely discharged, read the numerical value of acceleration of gravity from a shelves of digital millisecond counter.
Thick 1～the 6mm of light barrier, an oblong aperture is established in light barrier below, oblong aperture apart from about the light barrier and the distance of lower boundary equate.
The beneficial effects of the utility model:
The utility model adopts and freely discharges light barrier, need not electromagnet and air bag, also need not the scale on the support.The first, falling bodies are convenient to collect, and can not cause damage; The second, need not adsorbent equipment, so need not falling bodies are adjusted repeatedly; The 3rd, the number that obtains directly is the value of acceleration of gravity, need not to bring into any formula and carries out complex calculation; The 4th, experimental result is very accurate, because influences such as no remanent magnetism and vibrations, experimental error reduces to 0.01%～0.05% by original 9.5%; The 5th, owing to do not have dip stick on the support, promptly need not to measure any value except that acceleration of gravity, reduced propagation of error.This acceleration of gravity analyzer has not only shortened the experiment required time, has reduced the required workload of experiment, bigger minimizing measuring error, very simplify again simultaneously.
Description of drawings
A kind of acceleration of gravity analyzer of Fig. 1 structural representation.
The structural representation of Fig. 2 light barrier.
Embodiment
The utility model is described in further detail in conjunction with the accompanying drawings.
A kind of acceleration of gravity analyzer, it comprises: be fixed on two photogate 2, digital millisecond counter 1 and light barrier on the support, two photogate 2 are electrically connected with digital millisecond counter 1; An oblong aperture is established in the light barrier below; Digital millisecond counter 1 uses a shelves.During measurement, the top of light barrier from the photogate of close cantilever tip freely discharged, read the numerical value of acceleration of gravity from a shelves of digital millisecond counter.
Light barrier is grown 4～8cm at thick 1～6mm, and the size within wide 2～5cm is selected for use arbitrarily.An oblong aperture is established in light barrier below, oblong aperture apart from about the light barrier and the distance of lower boundary equate to be 5mm.
Claims (2)
1. acceleration of gravity analyzer, it comprises: be fixed on two photogate (2), digital millisecond counter (1) and falling bodies thing on the support (3), two photogate (2) are electrically connected with digital millisecond counter (1); It is characterized in that: the falling bodies thing is a light barrier, and an oblong aperture is established in the light barrier below; Digital millisecond counter (1) uses a shelves.
2. a kind of acceleration of gravity analyzer according to claim 1 is characterized in that: the thick 1～6mm of light barrier, an oblong aperture is established in light barrier below, oblong aperture apart from about the light barrier and the distance of lower boundary equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201234891U CN201278224Y (en) | 2008-11-05 | 2008-11-05 | Gravity acceleration determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201234891U CN201278224Y (en) | 2008-11-05 | 2008-11-05 | Gravity acceleration determinator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201278224Y true CN201278224Y (en) | 2009-07-22 |
Family
ID=40895811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201234891U Expired - Fee Related CN201278224Y (en) | 2008-11-05 | 2008-11-05 | Gravity acceleration determinator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201278224Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985293A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Mechanical device and method for compensating time for photoelectric timer |
-
2008
- 2008-11-05 CN CNU2008201234891U patent/CN201278224Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985293A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Mechanical device and method for compensating time for photoelectric timer |
| CN103985293B (en) * | 2012-12-03 | 2016-08-24 | 国家电网公司 | Machinery and the method for time bias is done for phototimer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20111105 |