A frequency measuring method is designed based on the principle of vibrating wire sensors

the design principle is introduced in detailed

and the design ideal of measuring frequency system

the hardware of circuit

work-principle

flow of the software is expatiated.The experiment result indicates that the resolution is 0.01 Hz by taking this method

the difference between it and XPO2 type frequency measuring device is lower 2 Hz.This circuit has many characters such as design thoughts clear

simply hardware circuit

credible stimulation oscillation

controllable stimulation oscillation

higher signal sensitivity

easy to operate

numeric display

inexpensive

fast and continuous detect

and so on

and has better application foreground.