基于FPGA的数字B超检波器设计与实现  

FPGA-based digital B-Ultrasonic Geophone Design and Implementation

作　　者：彭勇[1] 陈菲[1] 高小明[1] 

机构地区：[1]西南科技大学计算机科学与技术学院,四川绵阳621010

出　　处：《计算机测量与控制》2014年第1期311-313,共3页Computer Measurement &Control

基　　金：国家自然科学基金资助项目(61202044)

摘　　要：数字检波器是B超诊断系统中信号处理的重要组成部件,它从超声回波信号中解调出人体组织反馈的幅度信息,检波方法的选择与实现效果直接影响原始超声图像质量;为满足数字B超诊断系统开发中成像的要求,根据人体超声回波信号的特点,采用数字正交检波技术完成超声回波幅度解调,并将该检波技术在FPGA中实现;结果表明,该方法的设计与实现效果在图像的横、纵向分辨率等性能参数均大幅度优于国家指标要求。Digital geophone is an important component in the digital B ultrasonic diagnosis system, it demodulates the amplitude information that reflect the human tissue from the ultrasonic echo signals, the detection method selection and achieve results directly affect the o- riginal ultrasound image quality. To meet the digital B ultrasound diagnosis imaging system development requirement, according to human ultrasonic echo signal characters, take the digital quadrature detection technology to complete ultrasound echo amplitude demodulation, and im plemented the detection technology in FPGA. The results show that the method achieved effect in an image with horizontal and vertical reso lution and other performance parameters are significantly better than the national index requirements.

关 键 词：数字B超 正交检波 FPGA实现 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]