Sinusoidal wave demonstrating device with adjustable playing speed

Abstract

The invention discloses a sinusoidal wave demonstrating device with adjustable playing speed. The sinusoidal wave demonstrating device includes a fixing base, a speed regulating button and waveform chunks, supporting legs used for fixing are arranged on the bottom part of the fixing base, a working bin is connected with one side of the fixing base, a storage bin is arranged inside the storage bin, and the inner side of the storage bin is connected with a motor through a connecting shaft, the motor is connected with a rotating shaft through a conveyor belt, and a controller for controlling the motor is arranged below the storage bin inside the working bin. According to the sinusoidal wave demonstrating device, firstly the motor is arranged inside the storage bin, the motor is connected with a rotating shaft in a transmission mode through the conveyor belt, a plurality of waveform chunks are arranged on the rotating shaft, and the waveform chunks form a sinusoidal wave shape, so when the electric belt drives the rotating shaft to rotate, the rotation of the sinusoidal wave waveform can be demonstrated, so that students can better understand the sinusoidal waveform movement, meanwhile teachers are assisted to explain in a better way.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to a sine wave demonstration device with adjustable playback speed. Background technique [0002] A sine wave is a signal with the most single frequency component, so it is named because the waveform of this signal is a mathematical sine curve. Any complex signal—such as a music signal, can be regarded as a composite of many sine waves with different frequencies and sizes. We can set a function as y=sin X, when X is 0, 30, When 60, 90, 120, 150, 180 (unit: degree), the values ​​corresponding to Y are 0, 0.5, 0.8660, 1, 0.8660, 0.5, 0 respectively. Draw the corresponding point in the coordinate system to get the image of the sine wave. This image has a characteristic that it changes periodically. For example, when X=0, Y=0, and when X=180, Y=0; the opposite of (in the fourth quadrant). This is the image of a sine wave. [0003] Many students nowadays have difficulties...

AI Technical Summary

Problems solved by technology

[0003] Many students nowadays have difficulties in learning trigonometric functions. However, when teaching teachers explain sine wave waveforms, they just draw waveforms on PPT or blackboards for explanations, so students cannot understand them better, and they cannot understand them better. Therefore, it is still an important issue to develop a sine wave demonstration device for teaching to assist students in learning.

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