Method and system for detecting channel damage of ultrasonic system based on lens echoes

The invention discloses a method and system for automatic detection of the channels of an ultrasonic system based on lens echoes. The method comprises the following steps: S11, collecting probe lens surface echo signals of all the channels of the ultrasonic system and storing the collected echo signals; S12, calculating a lens echo peak value of each channel of the ultrasonic system according to the stored echo signals; and S13, judging whether the lens echo peak value of each channel is greater than a preset peak value or not, and if so, conducting no processing, or if not, reminding a user that the channel is damaged. The impedance of the surface of an ultrasonic probe lens is not matched with an air impedance value, and sound waves are reflected to generate lens echoes; and the amplitude of the lens echo of each channel reflects the quality of each channel of the ultrasonic system. By means of the above principle, lens echoes of all the channels of the system are collected before auser uses the system, and