论文部分内容阅读
本仪器系高速机械摆动扇形超声扫描仪。同步光电伺服系统驱动步进电机带动传动机构,使探头作来回摆动形成扇形扫查。采用同步伺服原理,实现声、电同步扫描,同步模拟函数计算器产生与探头摆动位置相对应正余弦调制信号,调制扫描放大形成扇形光栅。在国内首次实现用电子电路替代角度函数分解器以产生正余弦调制信号。仪器还具有心电R波瞬时或R波延时触发实时图象冻结功能和B-ECG、M-ECG复合切换显示功能。
The instrument is high-speed mechanical swing fan-shaped ultrasound scanner. Synchronous optical servo drive stepper motor drives the transmission mechanism, so that the probe back and forth swinging to form a fan scan. The synchronous servo principle is adopted to realize the synchronous scanning of sound and electricity. The synchronous simulation function calculator generates the cosine modulated signal corresponding to the wobble position of the probe, and the modulated scanning enlarges to form a fan-shaped grating. For the first time in China, the electronic circuit is used to replace the angle function resolver to generate sine cosine modulated signals. The instrument also has R-wave instantaneous ECG or R-wave delay to trigger real-time image freeze function and B-ECG, M-ECG composite switch display.