The Research Of Date Acquisition System For Ultrasonic Transient Elastography

With the rapid development of integrated electronic and computer technology, ultrasonic elastography technology used a lot of electronic and signal processing aspects of scientific and technological achievements,and combined with advanced processor, realize the ultrasonic elastography system of high precision, high resolution. In ultrasonic testing system of design and implementation,EDA technology and FPGA device as an advanced,convenient and efficient design method,has been widely used. The rapid development of FPGA as the programmable logic device,making the traditional circuit design of the larger changes in the product development process is no longer a single use of analog circuits or digital circuits,but can have design system function module design be customized special integrated circuits, choose FPGA and USB2.0combination of data collection and transmission system of the ultrasonic detector is a new application.This paper briefly introduces the liver cirrhosis in instantaneous detector ultrasound elastography technology,combining domestic and foreign ultrasonic transient elastography technology, designed a ultrasonic signal acquisition and transmission system module, and the system module are described in detail. The design of the system solution has the ultrasonic imaging system of high precision, high resolution, and has high data rate, can satisfy large amounts of data transmission, it was also through the modification of related software configuration and the function expansion, access to relevant information detection.This paper in liver cirrhosis of the detector data acquisition and transmission system for research, the data acquisition and transmission system mainly include hardware circuit and the software programming design.Hardware circuit design includes A/D conversion circuit design, analog switch circuit design, the analog input circuit design, the clock input circuit design and FPGA control module, USB2.0transmission module, switching power circuit design circuit design.Software programming mainly includes the FPGA control the A/D, the module FIFO, CY7C68013A firmware programming, PC reads the data and related graphic display interface design.Through the hardware and software on the way of the combination of the system function test and performance analysis, and the results show that the data collection and transmission system design can realize the ultrasonic transient elastography data acquisition and transmission requirements of the design, up to the effect.Finally, the research situation of this project are summarized, and further research direction of this project made a prospect.