脉搏图像传感器的检测定位方法研究

Research of method for position-setting applied to pulse image sensor

应用自制的基于单目CCD摄像头的脉搏图像传感器采集桡动脉动态脉搏图像。在信息采集过程中,需要对人手腕-探头-CCD三者之间的相对位置进行调整,以利于图像处理、脉搏信号的提取以及脉象分析。本文结合自制传感器,以"获取最优脉搏图像"为标准,分析总结对该传感器而言较为合理而又相对简单易行的定位规则。实验表明,"最佳取脉压力"和"平面最佳取脉位置"这两个指标可以帮助传感器寻找到获取最清晰脉搏图像的位置。

Use self-made pulse image sensor based on monocular CCD camera in acquiring radial pulse images. Adjusting relative positions of wris〉detector-CCD while collecting information will be beneficial to image processing, pulse-signals extracting and pulse-shape analysis. A comparatively reasonable and convenient method based on the principle of ＇best pulse-shape linage＇for position-setting applied to this situation is proposed in this paper. Experiments show that two indices named ＇ the best pulse-taking pressure＇ and ＇the best pulse-taking plane position＇ will be helpful for the sensor to get clearest pulse images.