CN210836742U - Simple pendulum experiment system based on electromagnetic positioning - Google Patents
Simple pendulum experiment system based on electromagnetic positioning Download PDFInfo
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- CN210836742U CN210836742U CN201920526472.9U CN201920526472U CN210836742U CN 210836742 U CN210836742 U CN 210836742U CN 201920526472 U CN201920526472 U CN 201920526472U CN 210836742 U CN210836742 U CN 210836742U
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Abstract
The utility model relates to a simple pendulum experiment system based on electromagnetic positioning, which comprises an electromagnetic positioning plate component, a base body module for fixing an electromagnetic positioning plate, a swinging module, a balancing weight and a signal source; the swing module comprises a rotating seat, a carbon fiber pipe and a signal source installation block; the rotating seat is used for inserting a rotating shaft of the base body to realize rotation around the rotating shaft; the upper end of the carbon fiber pipe is connected with the rotating seat; the lower end of the carbon fiber pipe is connected with the signal source mounting block to form a simple pendulum device; the signal source mounting block is used for fixing a signal source; during the experiment, the electromagnetic positioning plate is clamped between the iron support table component and the dial; the signal source installation block, the fixed balancing weights arranged on the two sides of the signal source installation block and the signal source arranged in the signal source installation block are used as simple pendulum pellets; the carbon fiber tube is used as a cycloid to do simple pendulum motion; the plane of the pendulum movement is parallel to the electromagnetic positioning plate and is positioned on the front side of the electromagnetic positioning plate; the electromagnetic positioning plate transmits the acquired data to a computer. The experimental device has simple structure and convenient installation and operation.
Description
Technical Field
The utility model relates to a teaching experiment equipment technical field, concretely relates to simple pendulum experimental system based on electromagnetism location.
Background
The simple pendulum experiment is a classical experiment, and many famous physicists have carefully studied the simple pendulum, such as the isochronism principle of galileo; huygens manufactured huygens pendulum clocks and the like using the principle of isochronism. The traditional simple pendulum experiment is that a heavy ball which is fixed at the upper end and small in volume is tied at the lower end of a light thin wire which can not stretch out. The small ball is released after a swing angle is given, and the small ball swings back and forth periodically at a balance position. The accuracy of the traditional laboratory is very high. The average error is 2% -3%. However, the number of the pendulum is relatively hard and bitter, and human errors are easy to occur.
With the deep use of the digital technical means in the existing middle school laboratory, the company develops the electromagnetic positioning plate which can realize the planar two-dimensional laboratory position acquisition device, but the simple pendulum experimental device matched with the electromagnetic positioning plate for use is not available at present. Therefore, a simple pendulum experiment system based on electromagnetic positioning is needed to adapt to the current situation.
Disclosure of Invention
1. The technical problem to be solved is as follows:
based on the technical problem, the invention provides a simple pendulum experiment system based on electromagnetic positioning, which is a planar two-dimensional experiment device for acquiring the position of a pendulum ball of a simple pendulum by utilizing an electromagnetic positioning plate, researching the relation between the amplitude and the pendulum length in a certain pendulum angle (5-degree angle) range and calculating the g value of the gravity acceleration.
2. The technical scheme is as follows:
the utility model provides a simple pendulum experimental system based on electromagnetism location which characterized in that: the device comprises an electromagnetic positioning plate assembly, a base body module, a swinging module, a balancing weight and a signal source; the electromagnetic positioning plate assembly comprises an electromagnetic positioning plate vertically placed on a horizontal plane; the base module comprises an iron support table component and a base component; the iron stand platform assembly comprises a vertical rod and a horizontal rod, and the horizontal rod and the vertical rod are in a cross shape; the front sides of two ends of the horizontal rod are respectively provided with a positioning damping foot margin, and the front sides of the positioning damping foot margins are connected with the back side of the electromagnetic positioning plate to realize that the plane where the simple pendulum moves is parallel to the electromagnetic positioning plate; the top end of the vertical rod is fixedly provided with a base component; the base component comprises a mounting block, a rotating shaft, a hand-screwed screw and a dial; the bottom end of the mounting block is provided with a groove matched with the top end of the vertical rod, and the groove of the mounting block is inserted into the top end of the vertical rod to fix the mounting block; the front surface of the mounting block is provided with a fixed rotating shaft which horizontally extends towards the front surface; the rotating shaft can be connected with the swinging module after penetrating through the through hole of the dial; and scales for measuring the rotation angle of the simple pendulum are arranged on the front surface of the dial.
The swing module comprises a rotating seat, an oilless bearing, a carbon fiber pipe and a signal source installation block; the rotating seat is provided with a hole for inserting the outer end of the rotating shaft, and an oilless bearing is arranged at the inner end and the outer end of the inner cavity of the hole to realize rotation around the rotating shaft; the upper end of the carbon fiber pipe is connected with the rotating seat; the lower end of the carbon fiber pipe is connected with the signal source mounting block to form a simple pendulum device; a grooving structure for fixing a signal source is arranged in the signal source mounting block; two sides of the signal source installation block are provided with structures capable of installing symmetrical fixed balancing weights; during the experiment, the electromagnetic positioning plate is clamped between the iron support table assembly and the dial; the signal source installation block, the fixed balancing weights arranged on the two sides of the signal source installation block and the signal source arranged in the signal source installation block are used as simple pendulum pellets; the carbon fiber tube is used as a cycloid to do simple pendulum motion; the plane of the pendulum movement is parallel to the electromagnetic positioning plate and is positioned on the front side of the electromagnetic positioning plate; the electromagnetic positioning plate transmits the acquired data to a computer.
Furthermore, the electromagnetic positioning plate assembly also comprises a fixing device; the electromagnetic positioning plate is fixed on the horizontal plane through a fixing device.
Furthermore, the electromagnetic positioning plate receives different electromagnetic signal intensities from the signal source; the positioning data information is obtained through internal calculation, and the information is sent to a computer in an electric signal form through a communication device in the electromagnetic receiving device.
Further, the signal source mounting block is made of polytetrafluoroethylene.
Further, the swing modules are in three groups, and the length of the carbon fiber in each group is different.
Further, the diameter of the carbon fiber tube is 2mm, the outer diameter of the signal source is 55mm, and the maximum outer diameter of the signal source is 35 mm.
The electromagnetic positioning plate adopted in the utility model has the specific structure that the rectangular coil array is uniformly distributed on the inner surface in the transverse and longitudinal directions according to a certain rule, and the rectangular coil array converts the intensity of the received electromagnetic signal into the intensity of an electric signal through the conversion circuit; the signal is sent to a signal processing module through a circuit (the circuit of the signal processing module is integrated in an electromagnetic positioning plate), the signal processing module confirms the position of the emitting module, and the position information is transmitted to a computer end through Bluetooth or USB communication.
3. Has the advantages that:
(1) this experiment ware uses the electromagnetism locating plate to realize the location to the simple pendulum bobble to save signal transmission to the computer in real time, the convenience is to the processing of experimental data. The data can be directly displayed through a computer.
(2) The cycloid in the experimental device selects the carbon fiber tube as the cycloid, the problem of front and back swing of a signal source is solved, if a common nylon wire is used, the cycloid can swing to impact the electromagnetic positioning plate in operation, a transmitted signal does not face the electromagnetic positioning plate, and the acquired trajectory line and data are inaccurate.
(3) Adopt signal source installation piece in this experiment ware, signal source installation piece adopts polytetrafluoroethylene to solve its gravity that receives and has little its experiment result error than great problem, the counter weight purpose, so with polytetrafluoroethylene because density is big, unit volume is heaviest in all plastics, and do not adopt the heavier metal material of unit volume, because metal material parcel signal source, have the interference to the transmission signal.
In conclusion, the experimental device is simple in structure, convenient to install and operate, accurate in experimental effect compared with the traditional experiment, and capable of collecting simple pendulum track images and x-t, vx-t images.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation of the components of the present invention;
FIG. 3 is a schematic structural view of a base module;
FIG. 4 is a schematic structural view of a mounting module;
fig. 5 is a schematic structural diagram of the swing module.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-5, a simple pendulum experiment system based on electromagnetic positioning is characterized in that: the device comprises an electromagnetic positioning plate component 1, a base body module 2, a swing module 3, a balancing weight 4 and a signal source; the electromagnetic positioning plate assembly comprises an electromagnetic positioning plate vertically placed on a horizontal plane; the base module comprises an iron stand assembly 22 and a base assembly 21; the iron stand platform assembly comprises a vertical rod and a horizontal rod, and the horizontal rod and the vertical rod are in a cross shape; the front surfaces of two end heads of the horizontal rod are respectively provided with a positioning shock absorption anchor leg 221, and the front surfaces of the positioning shock absorption anchor legs are connected with the back surface of the electromagnetic positioning plate to realize that the plane where the simple pendulum moves is parallel to the electromagnetic positioning plate; the top end of the vertical rod is fixedly provided with a base component 21; the base component comprises a mounting block 211, a rotating shaft 213, a hand screw 214 and a dial 212; the bottom end of the mounting block is provided with a groove matched with the top end of the vertical rod, and the groove of the mounting block is inserted into the top end of the vertical rod to fix the mounting block; the front surface of the mounting block is provided with a fixed rotating shaft 213 which horizontally extends towards the front surface; the rotating shaft can be connected with the swing module 3 after penetrating through the through hole of the dial; and scales for measuring the rotation angle of the simple pendulum are arranged on the front surface of the dial.
The swing module comprises a rotating seat 31, an oilless bearing 32, a carbon fiber pipe 33 and a signal source mounting block 34; the rotating seat is provided with a hole for inserting the outer end of the rotating shaft, and an oilless bearing is arranged at the inner end and the outer end of the inner cavity of the hole to realize rotation around the rotating shaft; the upper end of the carbon fiber pipe is connected with the rotating seat; the lower end of the carbon fiber pipe is connected with the signal source mounting block to form a simple pendulum device; a grooving structure for fixing a signal source is arranged in the signal source mounting block; two sides of the signal source installation block are provided with structures capable of installing symmetrical fixed balancing weights; during the experiment, the electromagnetic positioning plate is clamped between the iron support table assembly and the dial; the signal source installation block, the fixed balancing weights 4 arranged on the two sides of the signal source installation block and the signal source arranged in the signal source installation block are used as simple pendulum pellets; the carbon fiber tube is used as a cycloid to do simple pendulum motion; the plane of the pendulum movement is parallel to the electromagnetic positioning plate and is positioned on the front side of the electromagnetic positioning plate; the electromagnetic positioning plate transmits the acquired data to a computer.
Furthermore, the electromagnetic positioning plate assembly also comprises a fixing device; the electromagnetic positioning plate is fixed on the horizontal plane through a fixing device.
Furthermore, the electromagnetic positioning plate receives different electromagnetic signal intensities from the signal source; the positioning data information is obtained through internal calculation, and the information is sent to a computer in an electric signal form through a communication device in the electromagnetic receiving device.
Further, the signal source mounting block is made of polytetrafluoroethylene.
Further, the swing modules are in three groups, and the length of the carbon fiber in each group is different.
Further, the diameter of the carbon fiber tube is 2mm, the outer diameter of the signal source is 55mm, and the maximum outer diameter of the signal source is 35 mm.
The specific embodiment is as follows:
purpose of the experiment: the relationship between the pendulum length and the amplitude in the simple pendulum motion is researched.
The experimental steps are as follows:
the method comprises the following steps: as shown in the attached figure 1, the experimental device is installed, and the electromagnetic positioning plate is communicated with a computer through wireless communication;
step two: and putting the signal source into the signal source installation block.
Step three: and (3) using one group of swing modules, enabling the signal source mounting block to do simple pendulum motion at a pendulum angle smaller than 5 degrees, and measuring the time t for the simple pendulum to complete full vibration for n times (n =30 or 50) by using a stopwatch, so that the period of the simple pendulum is determined. The measurement was repeated 3 times, and the average value of the measured period T was calculated from T =2 pi.
Step four: changing pendulum length, repeating the experiment for several times, substituting the measured pendulum length l and period T into the formula
The value of the gravitational acceleration g is obtained.
Step five: and opening a signal source and an electromagnetic positioning plate switch, making the signal source mounting block perform simple pendulum motion by a pendulum angle less than 5 degrees, receiving a signal from the electromagnetic positioning plate by a computer, and displaying a pendulum trajectory line, and x-t and vx-t two-dimensional coordinate images.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a simple pendulum experimental system based on electromagnetism location which characterized in that: the device comprises an electromagnetic positioning plate assembly, a base body module, a swinging module, a balancing weight and a signal source; the electromagnetic positioning plate assembly comprises an electromagnetic positioning plate vertically placed on a horizontal plane; the base module comprises an iron support table component and a base component; the iron stand platform assembly comprises a vertical rod and a horizontal rod, and the horizontal rod and the vertical rod are in a cross shape; the front sides of two ends of the horizontal rod are respectively provided with a positioning damping foot margin, and the front sides of the positioning damping foot margins are connected with the back side of the electromagnetic positioning plate to realize that the plane where the simple pendulum moves is parallel to the electromagnetic positioning plate; the top end of the vertical rod is fixedly provided with a base component; the base component comprises a mounting block, a rotating shaft, a hand-screwed screw and a dial; the bottom end of the mounting block is provided with a groove matched with the top end of the vertical rod, and the groove of the mounting block is inserted into the top end of the vertical rod to fix the mounting block; the front surface of the mounting block is provided with a fixed rotating shaft which horizontally extends towards the front surface; the rotating shaft can be connected with the swinging module after penetrating through the through hole of the dial; scales for measuring the rotation angle of the simple pendulum are arranged on the front surface of the dial;
the swing module comprises a rotating seat, an oilless bearing, a carbon fiber pipe and a signal source installation block; the rotating seat is provided with a hole for inserting the outer end of the rotating shaft, and an oilless bearing is arranged at the inner end and the outer end of the inner cavity of the hole to realize rotation around the rotating shaft; the upper end of the carbon fiber pipe is connected with the rotating seat; the lower end of the carbon fiber pipe is connected with the signal source mounting block to form a simple pendulum device; a grooving structure for fixing a signal source is arranged in the signal source mounting block; two sides of the signal source installation block are provided with structures capable of installing symmetrical fixed balancing weights; during the experiment, the electromagnetic positioning plate is clamped between the iron support table assembly and the dial; the signal source installation block, the fixed balancing weights arranged on the two sides of the signal source installation block and the signal source arranged in the signal source installation block are used as simple pendulum balls; the carbon fiber tube is used as a cycloid to do simple pendulum motion; the plane of the pendulum movement is parallel to the electromagnetic positioning plate and is positioned on the front side of the electromagnetic positioning plate; the electromagnetic positioning plate transmits the acquired data to a computer.
2. The electromagnetic positioning-based simple pendulum experiment system of claim 1, wherein: the electromagnetic positioning plate assembly further comprises a fixing device; the electromagnetic positioning plate is fixed on the horizontal plane through a fixing device.
3. The electromagnetic positioning-based simple pendulum experiment system of claim 1, wherein: the electromagnetic positioning plate receives different electromagnetic signal intensities from the signal source; the positioning data information is obtained through internal calculation, and the information is sent to a computer in an electric signal form through a communication device in the electromagnetic receiving device.
4. The electromagnetic positioning-based simple pendulum experiment system of claim 1, wherein: the signal source mounting block is made of polytetrafluoroethylene.
5. The electromagnetic positioning-based simple pendulum experiment system of claim 1, wherein: the swing modules are divided into three groups, and the length of the carbon fiber in each group is different.
6. The electromagnetic positioning-based simple pendulum experiment system of claim 1, wherein: the diameter of the carbon fiber tube is 2mm, the outer diameter of the signal source is 55mm, and the maximum outer diameter of the signal source is 35 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526472.9U CN210836742U (en) | 2019-04-18 | 2019-04-18 | Simple pendulum experiment system based on electromagnetic positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526472.9U CN210836742U (en) | 2019-04-18 | 2019-04-18 | Simple pendulum experiment system based on electromagnetic positioning |
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| Publication Number | Publication Date |
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| CN210836742U true CN210836742U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920526472.9U Active CN210836742U (en) | 2019-04-18 | 2019-04-18 | Simple pendulum experiment system based on electromagnetic positioning |
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| CN (1) | CN210836742U (en) |
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- 2019-04-18 CN CN201920526472.9U patent/CN210836742U/en active Active
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