| In recent years, with the development of computer technology and electronic technology, there have been a growing number of portable devices. The portable is a direction of the traditional type B ultrasonic instrument, and it is the portable type-B ultrasonic. The leading ultrasound manufacturers are racing to develop low-cost, multi-function, high reliability, easy maintenance, easy-to-low-cost portable ultrasound imaging system, and achieved some results. But compared with developed countries, there is a gap.Portable type-B ultrasonic is composed of the ultrasonic probe and the host composition by the FPGA+ARM+DSP and peripheral components. Image Acquisition B-probe scanning the human body by ultrasonic send ultrasonic signals, the collected echo signal into digital signals to FPGA; FPGA front-end of the original data received after the data preprocessing; Done after pretreatment data distributed DSP and ARM, DSP does the digital image processing. ARM is responsible for coordinate transformation and interpolation image processing, post processing, the final image displayed. In addition, ARM is also responsible for the display system interface and control external equipment.The main contents of this paper is the design of portable terminal B-system software, B-image transmission and display on the ARM, including BootLoader migration, operating system, cutting and transplantation, the file system of production, B ultrasonic image transmission and display design, driver software and end graphical interface design and migration. System has realized the image display, medical records management, image processing, movie playback, image processing, image printing,network communication and other functions. The hardware uses OMAP3530 processor designed by TI,and uses OMAP 3530 EVM produced by MISTRAL company,using U-Boot as the BootLoader, embedded Linux as the operating system kernel, JFFS2 file system file system as a system the use of Qt /Embedded GUI development terminal. |
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