指静脉锁结构设计及动态精度识别方法

摘要

针对目前指纹锁所出现的可复制、易伪造,受皮肤干湿度、表面污渍影响等问题,设计了一种新型指静脉锁,该锁体主要由机械本体与控制面板两部份构成,文中详细介绍了指静脉锁的机械结构与电路控制原理,文末提出了一种基于双谱提高指静脉锁动态精度识别的新方法,该方法主要是利用所采集到的若干个指静脉分布信号,经灰度化与二值化处理后将其排列成一组随机信号,而后利用双谱的数值计算方法将随机信号转换为三维空间分布图,由于双谱具备有效抑制噪声的特点,使有效信号得到进一步的加强,噪声信号得以抑制,从而大大提升指静脉锁的动态识别精度.%For the fingerprint lock can be copied and easily forged,affected by skin moisture and surface stains in the process,a new type of finger vein lock is designed,the lock body is mainly composed of machine body and control panel,the paper introduces the mechanical structure and circuit control principle of finger vein lock in detail.At the end,a new method is proposed to improve the dynamic recognition accuracy of lock vein based on bi-spectrum,the method mainly uses some collected signal of finger vein,which will be arranged into a set of random signal by gray and b inarization,then the signal is converted into a three-dimensional space distribution by numerical calculation method ofbi-spectrum,owing to the bi-spectrumfeatures are to suppress noise and strengthen effective signal,thereby the dynamic recognition accuracy of lock vein gets greatly enhancing.