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Experiment device applied to Doppler effect and implementation system thereof

A technology of Doppler effect and experimental equipment, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems that the effect of experimental results is not obvious, and can not effectively overcome the influence of various noises, so as to improve the realization effect and accuracy Effect

Pending Publication Date: 2018-07-10
贺宜琛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The further technical problem to be solved by the present invention is that in the existing demonstration testing device, the influence of various noises existing in the demonstration environment cannot be effectively overcome, resulting in the problem that the effect of the experimental result is not obvious

Method used

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  • Experiment device applied to Doppler effect and implementation system thereof
  • Experiment device applied to Doppler effect and implementation system thereof
  • Experiment device applied to Doppler effect and implementation system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 of the present invention provides an experimental device applied to the Doppler effect, such as figure 1 and figure 2 As shown, it includes a base 1, a motor 2, a transmission gear set 3, a rotating rod 4, and at least two sound sources with preset transmission frequencies (such as figure 1 As shown, the number of sound sources is 2 as an example, which are respectively marked as 51 and 52) and the first sound wave collector 6, specifically:

[0059] The motor 2, the transmission gear set 3 and the rotating rod 4 are all arranged on the base 1, and the rotating rod 4 completes the driving coupling with the rotating shaft of the motor 2 through the transmission gear set 3; The transmission gear set 3 is also to provide as many rotational speed configuration combinations as possible for the rotary rod 4 when the motor 2 can only provide a single rotational speed.

[0060] In a specific experimental setup, such as figure 1 The gear set shown can be made in...

Embodiment 2

[0074] After providing an experimental device applied to the Doppler effect as described in Embodiment 1, an embodiment of the present invention also provides an experimental system applied to the Doppler effect, such as Figure 9 As shown, it includes a base 1, a motor 2, a transmission gear set 3, a rotating rod 4, at least two sound sources with preset transmission frequencies, a first sound wave collector 6 and an intelligent terminal 11, specifically:

[0075] The motor 2, the transmission gear set 3 and the rotating rod 4 are all arranged on the base 1, and the rotating rod 4 completes the driving coupling with the rotating shaft of the motor 2 through the transmission gear set 3;

[0076] The rotating rod 4 is provided with at least two fixed nodes for laying out the at least two sound sources with preset transmission frequencies;

[0077]The first acoustic wave collector 6 is arranged on one side of the base 1, and the first acoustic wave collector 6 and the rotation p...

Embodiment 3

[0088] Embodiment 3 of the present invention also provides a set of experimental data to demonstrate the practicability of the system proposed in the present invention as described in Embodiment 2. Wherein, the center frequency of the second buzzer is 3255Hz. In this embodiment, only the experimental data of the second buzzer is presented as an example, such as Figure 10 As shown, under the 3 groups of sound source motion speeds adopted in the embodiment of the present invention, in the process of moving close to the sound wave collector 6, the corresponding frequency results collected by the sound wave collector 6; wherein, the speed calculation process of the sound source is as follows :

[0089] V1=D÷360°÷t×2r=13882°÷360°÷7s×0.43m=4.74m / s

[0090] V2=D÷360°÷t×2r=12877°÷360°÷7s×0.43m=4.05m / s

[0091] V3=D÷360°÷t×2r=10373°÷360°÷7s×0.43m=3.54m / s

[0092] Wherein, D is the total number of angles of rotation of the sound source within the time t. It can be seen that the rota...

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Abstract

The present invention relates to the technical field of Doppler effect test experiments, and provides an experiment device applied to the Doppler effect and an implementation system thereof. A motor,a transmission gear set and a rotating rod which are arranged in the experiment device are arranged on the substrate, the rotating rod completes driving coupling with a motor rotating shaft through the transmission gear set, the rotating rod is provided with at least two fixed nodes configured to arrange at least two sound sources having preset emitting frequencies; a first sound wave collector isarranged at one side of the substrate, and the rotation planes of the first sound wave collector and the rotating rod are located in the same horizontal plane. The experiment device applied to the Doppler effect is provided with at least two sound sources with different frequencies on the same rotating rod to achieve the purpose of more efficient experiment data collection, wherein the sound sources with different frequencies can be arranged at fixed nodes with different rotating radiuses so as to ensure the quantity of valid experiment data in a cycle of rotating experiment.

Description

【Technical field】 [0001] The invention relates to the technical field of Doppler effect testing experiments, in particular to an experimental device and a realization system applied to the Doppler effect. 【Background technique】 [0002] The Doppler Effect is a theory discovered by Dr. Doppler in 1842. It shows the frequency of fluctuations for an observer moving relative to the wave source. According to the physics classroom, the definition of the Doppler effect is: the wavelength of the radiation of an object changes due to the relative motion of the wave source and the observer. In front of the moving wave source, the wave is compressed, the wavelength becomes shorter and the frequency becomes higher (blue shift); when behind the moving wave source, the opposite effect occurs. The wavelength becomes longer and the frequency becomes lower (red shift); the higher the velocity of the wave source, the greater the effect. According to the degree of red (blue) shift of the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/14
CPCG09B23/14
Inventor 贺宜琛
Owner 贺宜琛
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