医疗卫生装备2017，Vol.38Issue(11)：1-4,9,5.DOI:10.7687/j.issn1003-8868.2017.11.001
一种甚高频医学超声回波信号高速数据采集系统的设计
Design of high-speed data acquisition system for very high frequency medical ultrasonic echo signals
摘要
Abstract
Objective To develop a high-speed data acquisition system for very high frequency medical ultrasonic echo signals. Methods The chip LTC2285 with two integrated ADC channels was adopted to realize analog-to-digital conversion of ultrasonic echo signals. The sampling rate was 120 MHz. The converted digital signals were then input to the FPGA to realize parallel to serial conversion, and high-speed digital signals with a sampling rate of 240 MHz were obtained. Finally, the data were transferred through USB interface to the computer terminal to display. Results A timing simulation experiment, a resolution detection experiment, and an in vivo experiment of normal human eyes were carried out in this system. A preferable simulation result and real-time image were obtained. Conclusion The multi-channel and FPGA technology are used in the design of the system. Lastly, this technology simplifies the overall design of the system and improves the speed and reliability of the high speed data acquisition system.关键词
甚高频/超声回波信号/超声生物显微镜/ADC芯片/模数转换/FPGA技术Key words
very high frequency/ultrasonic echo signal/ultrasound biomicroscopy/ADC chip/analog-to-digital conver-sion/FPGA technique分类
医药卫生引用本文复制引用
王晓春,杨军,计建军,王延群,周盛..一种甚高频医学超声回波信号高速数据采集系统的设计[J].医疗卫生装备,2017,38(11):1-4,9,5.基金项目
国家自然科学基金青年项目(61601520) （61601520）
天津市科技计划项目(15JCZDJC327000,16YFZCSY00870,17YFZCSY00630) （15JCZDJC327000,16YFZCSY00870,17YFZCSY00630）
中央级公益性科研院所基本科研业务专项资助课题(2016ZX310102,2016ZX310108) （2016ZX310102,2016ZX310108）
