Delayed excitation ultrasonic imaging method and apparatus and delayed excitation system

A delayed excitation ultrasonic imaging apparatus, comprising:

• a delayed excitation module configured to generate a regulating clock, and perform, according to the regulating clock, delayed excitation on an ultrasonic transducer once or multiple times;
• a data collection module configured to perform data collection on an ultrasonic echo signal of the ultrasonic transducer and signals after each time of performing delayed excitation;
• a data synthesis module configured to synthesize and superimpose data as collected to obtain high sampling rate data;
• and
• an ultrasonic imaging module configured to perform ultrasonic imaging according to the high sampling rate data.

A delayed excitation system, comprising:

• a signal receiving module configured to receive an ultrasonic signal and convert the ultrasonic signal as received into an ultrasonic echo signal;
• a programmable logic control module configured to generate a regulating clock and transmit a control signal of delayed excitation to a signal transmitting module, and further configured to collect data of delayed excitation, and synthesize and superimpose the data as collected to obtain high sampling rate data;
• and
• a signal transmitting module configured to perform delayed excitation on the ultrasonic echo signal according to the regulating clock after receiving the control signal transmitted by the programmable logic control module.