Magnetic field output pulse measuring system for transcranial magnetic stimulator

A magnetic field output pulse measurement system for a transcranial magnetic stimulator comprises a signal acquisition circuit which comprises a coil, a capacitor C1 and an inductor L which are connected in series, and the coil 1 adopts a Rogowski coil and is used for acquiring a discharge signal of the energy storage capacitor C1 to the coil of the inductor L; the integrating circuit is used for waveform conversion and converting the cosine wave signal acquired by the coil into a sine wave signal; the zero-voltage comparison circuit is used for outputting a square wave signal, and the output level of the zero-voltage comparison circuit is reversed when the input sine wave is zero; and the single-chip microcomputer is used for calculating the width of the square wave signal and calculating the width of the magnetic field pulse at the same time. According to the utility model, an electric signal output by the signal coil is collected and is acted by the integral circuit and the zero voltage detection circuit t