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A sound transmission demonstrator

A sound propagation and demonstration instrument technology, applied in the field of teaching aids, can solve the problems of poor anti-interference performance and inaccurate demonstration sound propagation properties, and achieve the effects of stable performance, simple structure, and avoidance of contact.

Inactive Publication Date: 2017-10-03
徐昕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problems that general teaching aids in the prior art do not effectively solve the technical problems of poor anti-interference performance and inaccurate properties of demonstration sound propagation, and provides a sound propagation demonstration instrument, which uses a liquid storage container, a sounding body, an air chamber I and a remote controller And other structural innovations, realize that the demonstration instrument has the characteristics of simple structure, convenient operation, accurate demonstration, good anti-interference, clear and intuitive, and can demonstrate various physical phenomena

Method used

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  • A sound transmission demonstrator
  • A sound transmission demonstrator
  • A sound transmission demonstrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one: combined with attached figure 1 , a sound propagation demonstration instrument, comprising an open liquid storage container 1, a sounding body 2, an air cavity I3 and a remote controller 4, the sounding body 2 is arranged in the liquid storage container 1, the sounding body 2 is connected with the air cavity I3, and the air The chamber I3 is provided with a liquid pumping device 1, and the sounding body 2 and the liquid pumping device 1 are all controlled by a remote controller 4.

Embodiment 2

[0027] Embodiment two: combined with attached figure 1 and 2 , a sound propagation demonstration instrument, comprising an open liquid storage container 1, a sounding body 2, an air cavity I3 and a remote controller 4, the sounding body 2 is provided with an indicator light 17, and the sounding body 2 is arranged in the liquid storage container 1, Sounding body 2 links to each other with air cavity I3, is provided with pumping liquid device I in the air cavity I3, and pumping liquid device I is made up of water pump I5 and drain pump I6, and the power supply of water pump I5 and drain pump I6 is DC power supply, The suction pipe of the water pump I5 and the drain pipe of the water pump I6 are all arranged in the liquid storage container 1, the water outlet of the water pump I5 and the water inlet of the water pump I6 are all arranged in the air cavity I3, the sounding body 2, the water pump I5 and the drainage pump I6 are all controlled by the remote controller 4, and the liq...

Embodiment 3

[0028] Embodiment three: combined with attached image 3, a sound propagation demonstrator, comprising an open liquid storage container 1, sounding body 2, air cavity I3, remote controller 4, sound receiver 8, air cavity II9 and loudspeaker 10, sounding body 2 and sound receiver 8 are all arranged in the liquid storage container 1, sounding body 2 links to each other with air chamber I3, is provided with pumping liquid device 1 in air chamber I3, sound receiver 8 is matched with sounding body 2, and loudspeaker 10 passes wireless The signal is connected, the air chamber II9 is ​​connected with the sound receiver 8, and the air chamber II9 is ​​provided with a liquid pumping device II, and the sounding body 2, the liquid pumping device I, the sound receiver 8 and the liquid pumping device II are controlled by the remote controller 4 control.

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Abstract

The invention discloses a sound transmission demonstration instrument, comprising an open mouthed liquid storage container, a sounding body, an air chamber I, and a remote controller. The demonstration instrument is characterized in that the sounding body is disposed in the liquid storage container, the sounding body is connected with the air chamber I, the air chamber I is internally provided with a liquid pumping drainage device I, and the sounding body and the liquid pumping drainage device I are controlled by a remote controller. Through innovation of combining the liquid storage container, the sounding body, the air chamber I, and the remote controller, the provided sound transmission demonstration instrument is simple in structure, convenient in operation, accurate in demonstration, and good in anti-interference property. The demonstration instrument is clear and visual, and can demonstrate a plurality of physical phenomenon.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a sound transmission demonstration instrument. Background technique [0002] The principle of sound propagation is one of the courses in the physics teaching process. In order to demonstrate the nature of sound propagation in liquids, teachers often need to use teaching aids for sound propagation. In some teaching aids, the sounding body needs to be fixed by a fixing device, so that the sounding body has a structure in contact with other media, it is difficult to demonstrate the nature of sound propagation in liquid, and there is a problem of low accuracy in demonstrating sound propagation in liquid . However, in teaching aids with a suspended structure, due to the unreasonable structure, the magnetic field interference is relatively serious, and it is difficult to demonstrate the nature of sound propagation in a vacuum. However, the general teaching aids in the prior ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/14
CPCG09B23/14
Inventor 徐昕
Owner 徐昕