CN214097816U - Simple pendulum method acceleration of gravity measuring device - Google Patents
Simple pendulum method acceleration of gravity measuring device Download PDFInfo
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- CN214097816U CN214097816U CN202120357916.8U CN202120357916U CN214097816U CN 214097816 U CN214097816 U CN 214097816U CN 202120357916 U CN202120357916 U CN 202120357916U CN 214097816 U CN214097816 U CN 214097816U
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- pendulum
- photoelectric door
- measuring device
- support
- photoelectric
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Abstract
The utility model discloses a simple pendulum method acceleration of gravity measuring device, including simple pendulum subassembly, photoelectricity door measuring device and data processing module, the simple pendulum subassembly includes support, rotation axis, force sensor, single pendulum rod and pendulum ball, the rotation axis rotates and sets up on the support, the rotation axis passes through the connecting rod to be connected with force sensor below, force sensor connects single pendulum rod below, single pendulum rod bottom fixed pendulum ball; the photoelectric door measuring device comprises a photoelectric door support and a photoelectric door arranged on the photoelectric door support; the tension sensor and the photoelectric door are electrically connected with the data processing module. The utility model discloses a pulling force and instantaneous speed that tension sensor and photoelectric gate can accurate measurement pendulum ball, and the data that record are passed to the host computer and are calculated on the data processing module. The utility model provides an experiment work load is big in the experiment of traditional simple pendulum, the experimental result error is big, the experiment is single and experiment reading difficulty scheduling problem.
Description
Technical Field
The utility model belongs to the technical field of the physics experiment device, especially, relate to a simple pendulum method acceleration of gravity measuring device.
Background
The measurement of the gravity acceleration has extremely important significance for geological exploration, polar scientific investigation, navigation and the like. The traditional method for measuring the gravity acceleration is mainly a simple pendulum method, and the simple pendulum method for measuring the gravity acceleration is to obtain a pendulum period and time by utilizing a pendulum ball to do periodic oscillation, so that the gravity acceleration is obtained. However, the measurement method needs to continuously read experimental data, and also needs a long reading period to avoid the influence of air resistance on experimental results, so that the system error is relatively large, and meanwhile, due to improper operation, the simple pendulum is easy to make conical pendulum motion, and the accuracy of the experimental results is further influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize force sensor to measure gravity device with higher speed aims at solving the problem that prior art exists among the above-mentioned background art.
In order to achieve the above object, the utility model adopts the following technical scheme:
a gravity acceleration measuring device adopting a simple pendulum method comprises a simple pendulum assembly, a photoelectric door measuring device and a data processing module, wherein the simple pendulum assembly comprises a support, a rotating shaft, a tension sensor, a single pendulum rod and a pendulum ball, the rotating shaft is rotatably arranged on the support and is connected with the tension sensor below through a connecting rod, the single pendulum rod is connected below the tension sensor, and the bottom end of the single pendulum rod is fixedly connected with the pendulum ball; the photoelectric door measuring device is arranged below the swing ball and comprises an arc-shaped photoelectric door support and a photoelectric door arranged on the photoelectric door support, and the radian of the photoelectric door support is consistent with the swinging radian of the swing ball; the photoelectric door and the tension sensor are respectively and electrically connected with the data processing module.
Preferably, a plurality of photogates are symmetrically arranged at intervals along the radian direction of the photogate bracket.
Preferably, the photoelectric door support is provided with a long strip-shaped installation groove, the center of the photoelectric door is provided with an installation hole, and the photoelectric door is adjustably fixed on the photoelectric door support through the installation groove.
Preferably, a protective shell is arranged outside the tension sensor, and the lower end of the tension sensor is in threaded connection with the upper end of the single swing rod.
Preferably, the simple pendulum assembly, the photoelectric door measuring device and the data processing module are all arranged on the experiment table.
Compare in prior art's shortcoming and not enough, the utility model discloses following beneficial effect has:
the utility model discloses a pulling force sensor and photogate measuring device, pulling force and instantaneous speed data when measurable quantity pendulum ball swings to with pulling force and instantaneous speed data transmission to data processing module, and then upload to the host computer of LabVIEW development, thereby obtain acceleration of gravity and air resistance. The pendulum ball is connected through the single pendulum rod, avoids the simple pendulum to do the circular cone pendulum motion during the measurement process, further promotes the accuracy of measuring result. Be equipped with rectangular shape mounting groove on the photogate support, can adjust the fixed position of photogate according to the experiment needs to satisfy different measurement needs. The utility model provides an experiment work load is big in the experiment of traditional simple pendulum, the experimental result error is big, the experiment is single and experiment reading difficulty scheduling problem.
Drawings
Fig. 1 is a schematic structural diagram of a single pendulum method gravitational acceleration measuring device provided by an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a simple pendulum assembly according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a photoelectric gate measuring device according to an embodiment of the present invention.
In the figure: 1. a simple pendulum assembly; 2. a photogate measurement device; 3. a data processing module; 11. a support; 12. a rotating shaft; 13. a connecting rod; 14. a tension sensor; 15. a protective shell; 16. a single swing link; 17. placing a ball; 21. a photogate; 22. a photogate support; 23. mounting grooves; 24. a screw; 25. and (4) a test bench.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the utility model provides a gravitational acceleration measuring device, including setting up simple pendulum subassembly 1 on laboratory bench 25, photoelectric door measuring device 2 and data processing module 3, simple pendulum subassembly 1 and photoelectric measuring device 2 convey the experimental data that obtains to data processing module 3 with measuring.
The simple pendulum component 1 comprises a support 11, a rotating shaft 12, a tension sensor 14, a single pendulum rod 16 and a pendulum ball 17, wherein the support 11 is fixed on a test bench 25, the rotating shaft 12 is arranged on a horizontal rod of the support 11, the lower end of the rotating shaft 14 is fixedly connected with a connecting rod 13, the lower end of the connecting rod 13 is connected with the tension sensor 14, a protective shell 15 is arranged outside the tension sensor 14, the lower side of the tension sensor 14 is connected with the single pendulum rod 16 through threads, and the pendulum ball 17 is fixed at the tail end of the single pendulum rod 16.
Photoelectric door measuring device 2 sets up on laboratory bench 25 of pendulum ball 17 below, photoelectric door measuring device 2 includes photoelectric door support 22 and photoelectric door 21, photoelectric door support 22 is arc tubulose structure, its radian is unanimous with pendulum ball 17 wobbling radian, photoelectric door support 22 upside is opened there is rectangular form mounting groove 23, the mounting hole is seted up to photoelectric door 21 intermediate position, photoelectric door 21 passes through on mounting hole and the mounting groove 23 of screw 24 fixed in photoelectric door support 22, pass through in the middle of the photoelectric door 21 when making pendulum ball 17 swing. The installation position of the photoelectric door 21 can be adjusted according to the measurement requirement, so that the adjustment of the measurement position is realized. The measurement can be carried out by arranging one photoelectric door 21 below the swing ball 17, or a plurality of photoelectric doors are arranged, the photoelectric doors are uniformly and symmetrically distributed on the arc-shaped photoelectric door support 22 at intervals along the radian direction, the number of the photoelectric doors 21 is preferably 5, one of the photoelectric doors is vertically arranged right below the swing ball 17 in a static state, and the rest four photoelectric doors are respectively and uniformly and symmetrically arranged on the photoelectric door supports 22 at the two sides.
The tension sensor 14 and the photoelectric gate 21 are respectively electrically connected with the data processing module 3, the tension sensor 14 transmits tension data when the pendulum ball swings to the data processing module 3, meanwhile, the photoelectric gate 21 transmits instantaneous speed data of the pendulum ball to the data processing module 3, the data processing module 3 uploads an obtained experimental result to an upper computer developed by LabVIEW, and the gravity acceleration and the air resistance measured in the experiment are obtained through calculation of the upper computer.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A gravity acceleration measuring device adopting a simple pendulum method comprises a simple pendulum assembly, a photoelectric door measuring device and a data processing module, and is characterized in that the simple pendulum assembly comprises a support, a rotating shaft, a tension sensor, a single pendulum rod and a pendulum ball, wherein the rotating shaft is rotatably arranged on the support and is connected with the tension sensor below through a connecting rod, the single pendulum rod is connected below the tension sensor, and the bottom end of the single pendulum rod is fixedly connected with the pendulum ball; the photoelectric door measuring device is arranged below the swing ball and comprises an arc-shaped photoelectric door support and a photoelectric door arranged on the photoelectric door support, and the radian of the photoelectric door support is consistent with the swinging radian of the swing ball; the photoelectric door and the tension sensor are respectively and electrically connected with the data processing module.
2. The simple pendulum method acceleration of gravity measuring device of claim 1, characterized in that a plurality of photogates are provided at symmetrical intervals along the arc direction of the photogate support.
3. The gravitational acceleration measuring device of claim 2, wherein the photoelectric door support has an elongated mounting slot, and a mounting hole is formed in the center of the photoelectric door, and the photoelectric door is adjustably fixed to the photoelectric door support by the mounting slot.
4. The gravitational acceleration measuring device of claim 1, wherein a protective shell is provided outside the tension sensor, and the lower end of the tension sensor is in threaded connection with the upper end of the single swing link.
5. The gravitational acceleration measuring device of claim 1, wherein the pendulum assembly, the optical gate measuring device, and the data processing module are disposed on a laboratory bench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120357916.8U CN214097816U (en) | 2021-02-09 | 2021-02-09 | Simple pendulum method acceleration of gravity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120357916.8U CN214097816U (en) | 2021-02-09 | 2021-02-09 | Simple pendulum method acceleration of gravity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214097816U true CN214097816U (en) | 2021-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120357916.8U Expired - Fee Related CN214097816U (en) | 2021-02-09 | 2021-02-09 | Simple pendulum method acceleration of gravity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214097816U (en) |
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2021
- 2021-02-09 CN CN202120357916.8U patent/CN214097816U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210831 Termination date: 20220209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |