Underwater acoustic tomography ultrasonic time difference flow measurement amplifying circuit

The invention discloses an underwater acoustic tomography ultrasonic time difference current measurement amplifying circuit, which comprises a power supply module, a main processor, a filtering and amplifying module and an acquisition and protection module, and is characterized in that the power supply module is used for supplying power to the main processor, the filtering and amplifying module and the acquisition and protection module, and the output end of the acquisition and protection module is electrically connected with the input end of the filtering and amplifying module; the acquisition protection module is used for converting underwater ultrasonic signals into electric signals, the output end of the filtering and amplifying module is electrically connected with the main processor, and the main processor is electrically connected with the input end of the filtering and amplifying module. The acquisition protection module converts underwater ultrasonic signals into electric signals, then the signals ar