Full-automatic standing wave resonance method sound velocimeter based on WIFI

Abstract

The invention discloses a full-automatic standing wave resonance method sound velocimeter based on WIFI. The full-automatic standing wave resonance method sound velocimeter based on WIFI comprises a slidable grid-capacitance type ruler head, a grid-capacitance type ruler body, master control equipment, a carrying rack in the middle of the sound velocimeter, a receiving end transducer, a carrying seat for fixing the receiving end transducer, an emitting end transducer, a straight rack fixed to the carrying rack, a gear at the bottom of the transducer carrying seat, a power supply, an instrumentside rack, a spring electric wire, a receiving end transducer signal line, a grid-capacitance type ruler signal line, a connecting rod of the carrying seat and the grid-capacitance type ruler head and an ultrasonic signal emitter. By means of wireless control, complex connection of the electric wire is avoided, the instrument is placed conveniently, and the sound velocimeter can be used for teaching demonstration. Meanwhile, by adopting a wireless scheme of WIFI, measured data can be shared in LAN, so that the teaching means is enriched.

Description

technical field [0001] The invention relates to a full-automatic sound velocity measuring instrument based on WIFI standing wave resonance method. Background technique [0002] The measurement of sound velocity is a classic experiment in college physics experiment courses. Sound waves create a stable standing wave between two aluminum transducers. Find the position of the antinode of the standing wave with an oscilloscope, record the distance between adjacent antinodes with a scale, and measure the wavelength. c=λν (c represents sound, λ represents wavelength, and ν represents frequency) to calculate the speed of sound propagation. This measurement method is called the standing wave resonance method. [0003] The traditional standing wave resonance sound velocity measuring instrument needs to turn the handle repeatedly to push the screw to change the position of the transducer during the measurement process, which is prone to return error. In addition, when judging the p...

AI Technical Summary

Problems solved by technology

And with this structure, the transducer is above the trolley, so the transducer cannot be placed in water

The instrument cannot be used to measure the sound velocity of liquid, nor can it be used to measure the sound velocity of gas in a closed container, it can only be used to measure the sound velocity of air, and has a single function

Images