Design and Realization of Integrated Ultrasound Transmitting Circuit

摘要

The current ultrasound transmitting circuit has many disadvantages like large size, low digital standard, bad flexibility of adjustment and so on. A new integrated ultrasound transmitting circuit is developed. The circuit use DDS technique based on FPGA to control DC-DC boost circuit and pulse exciting circuit synchronously. Negative sharp pulses were generated which used to excite ultrasonic transducer. The results of experiment show that the transmitting circuit was stable and reliable. Compared with the current ultrasonic transmitting circuit, it has many advantages such as simple hardware structure, abundant digital port, strong expansibility and so on. And it can be adaptable to the demands of miniaturization and digitization for ultrasonic testing device.