Gas storage well detection method based on electromagnetic ultrasonic thickness measurement method, hardware circuit and device

The invention discloses a gas storage well detection method based on an electromagnetic ultrasonic thickness measurement method, a hardware circuit and a device. In other words, particles in the magnetic material generate guided waves with the same frequency as the excitation magnetic field under the combined action of Lorentz force, magnetostriction force, magnetic force and the like in the alternating magnetic field, the guided waves can be reflected in the measured piece, and the thickness of the measured point can be calculated by detecting the time interval of two echoes. Firstly, advantages and disadvantages of an existing gas storage well detection device are summarized, and then a natural gas storage well corrosion detection machine prototype system based on the electromagnetic ultrasonic principle is designed. An electromagnetic ultrasonic signal preprocessing circuit is designed, so that the signal-to-noise ratio is improved, and the detection precision reaches 0.1 mm; the mechanical structure desig