Eight-channel variable gain data acquisition system

The architecture of a multi-channel ultrasonic application system is proposed. The analog part of the system implements eight-channel high-speed data acquisition, and the gain and sample rate can be changed. The FPGA is the controller of the system and realizes signal-processing at the same time. The DSP realizes complicated arithmetic. The system is tested and the experimental results show that the system has significant value for practical application,and attains to the demand of high-performance system.