In the producing process of absorbable suture,in order to ensure uniformity of suture diameter and im-prove production efficiency,online detection system of absorbable suture diameter is designed.This system consists of optical imaging module,the CPLD-driving module for linear CCD,high-speed A/D data acquisition and DSP digital signal processing module.It achieves non-contact measurement,and synchronizes the CCD signal output,data acqui-sition and data processing.The sampling frequency is 1 MHz.The experiments show that the response time of online measurement system is 3 ms,the system has good real-time performance and high reliability,its accuracy reaches 5μm in range of 0.002 to 5 mm.%在可吸收缝合线的制备工艺中，为了保证缝合线线径均匀，提高生产效率，设计了可吸收缝合线线径的在线检测系统。系统由光学成像模块、基于CPLD的线阵CCD驱动模块、高速A/D数据采集和DSP数字信号处理模块组成。实现了非接触式测量，线阵CCD信号的输出、数据采集与数据处理过程同步，采样频率为1 MHz。实验证明：该检测系统的响应时间为3 ms，实时性好，可靠性高，在检测范围0.002~4 mm内的测量精度为5μm。
展开▼
