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Acoustic wave Doppler effect experimental device and system

A technology of Doppler effect and experimental device, which is applied in the field of acoustic Doppler effect experimental device and system, can solve the problem that sound intensity and tone cannot be effectively distinguished.

Pending Publication Date: 2020-02-14
刘杰
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes an acoustic Doppler effect experimental device and system, which solves the problem that the acoustic Doppler effect demonstration in the prior art cannot effectively distinguish sound intensity and tone (frequency)

Method used

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  • Acoustic wave Doppler effect experimental device and system
  • Acoustic wave Doppler effect experimental device and system
  • Acoustic wave Doppler effect experimental device and system

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The present invention proposes a kind of acoustic wave Doppler effect experimental device 1, see figure 1 , including a speaker 11, a pickup head (microphone) 21, a housing 13, a housing 23, and a terminal (not shown in the figure).

[0023] Wherein, the speaker 11 is electrically connected to the first control panel 31 through the fi...

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Abstract

The invention provides an acoustic wave Doppler effect experimental device comprising a loudspeaker, a pickup head (microphone), a first connecting line, a second connecting line, a first digital display and a second digital display. The invention further provides two acoustic wave Doppler effect experimental systems, an acoustic wave Doppler effect experimental device and control equipment; and the control equipment comprises a control circuit, a control panel and a box body. The invention further provides an acoustic wave Doppler effect experimental method which adopts the two acoustic waveDoppler effect experimental systems to carry out experiments. The method comprises the following steps of conveying waveform signals generated by the control circuit to the loudspeaker and the first digital display; collecting acoustic wave signals generated by the loudspeaker by the pickup head, and conveying the acoustic wave signals to the second digital display through a frequency measuring circuit; and moving the loudspeaker or the pickup head so as to observe the digital change of the second digital display.

Description

technical field [0001] The invention relates to the technical field of educational experiment supplies, in particular to an acoustic Doppler effect experimental device and system. Background technique [0002] The Doppler effect is a subject that must be studied by scholars in many fields. It is very necessary and effective for students who have a preliminary understanding of the Doppler effect to demonstrate the Doppler effect intuitively through experimental instruments. [0003] The existing method of demonstrating the acoustic Doppler effect is to listen to the sound change through the relative motion between the sound source and the listener. [0004] However, the inventors found that it is difficult for the listener to distinguish the change of sound intensity and tone (frequency) in a small range, which may easily cause the illusion of the experimenter. Contents of the invention [0005] The invention provides an acoustic Doppler effect experimental device and syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/14
CPCG09B23/14
Inventor 不公告发明人
Owner 刘杰
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