String Vibration Velocimetry Experimental Instrument with Dual Vibration Wave Sources and Its Operation Method

Abstract

The invention provides a string vibration speed measurement experiment instrument with a vibration motor and an electric vibration tuning fork as double vibration wave sources. The string vibration speed measurement experiment instrument aims to solve the technical problems that an existing vibration experiment instrument is complicated in equipment structure, poor in demonstration effect and the like. The string vibration speed measurement experiment instrument comprises an experiment instrument body. A base is arranged at the bottom of the experiment instrument body, and a vibration motor assembly is installed on the experiment instrument body. The vibration motor assembly is installed on the head portion of the electric vibration tuning fork through a fixing flat plate. The vibration motor is installed in the vibration motor assembly. An eccentric block, a speed measurement disk and a photoelectric door are installed on an outer rotating shaft of the vibration motor. A direct-current power source speed measurement instrument is installed on the right side of the base. A voltage adjusting and frequency adjusting power source and a vibration motor speed measurement instrument are installed on the direct-current power source speed measurement instrument. The voltage adjusting and frequency adjusting power source is provided with a voltage adjustment and frequency adjustment alternation switch, a power switch and the like. The vibration motor speed measurement instrument is provided with a power supply switch, a frequency switch and the like. When the string vibration speed measurement experiment instrument is used, through the steps of power source connection, voltage adjustment and the like, the string vibration frequency is obtained by measuring the vibration frequency with the vibration motor as the wave source finally. The frequencies and the wavelengths of the vibration strings of the double vibration wave sources can be mutually checked and compared. According to the string vibration speed measurement experiment instrument with the vibration motor and the electric vibration tuning fork as the double vibration wave sources, the structure is reasonable, and an operation method is easy to grasp.

Description

technical field [0001] The invention relates to a string vibration tester, in particular to a string vibration speed measurement tester with a vibration motor as a wave source. The string vibration experiment instrument is mainly used in the physics experiment of the university, and belongs to the technical field of mechanical heat physics experiment. Background technique [0002] At present, in the field of mechanothermal physics string vibration experiments, the following vibration modes of string vibration wave sources are generally adopted: the string vibration mode with the electric vibration tuning fork as the wave source or the string vibration mode with the electromagnetic oscillator as the wave source. There are many disadvantages in the above methods. Although the first method has obvious demonstration effect and low cost, there are serious experimental blind spots and low experimental efficiency. The latter kind of demonstration effect is not obvious, and the equ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of existing string vibration experiment instruments and devices in different degrees, such as complicated equipment structure, high cost, blind spots in the experiment, low experiment efficiency, inconspicuous demonstration effect, high requirements on string materials, and poor reliability. Due to technical problems such as the impact on the quality of experimental teaching, a new type of string vibration velocimetry experiment instrument with vibration motor and electric vibration tuning fork as dual vibration wave sources is provided.

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