胶囊内镜体外图像接收、存储系统

An external data receiving and storing system for wireless capsule endoscope

目的为了接收人体胃肠道内无线胶囊内镜发出的图像信息,研制了一种基于CF卡的体外图像接收、存储系统。方法该系统采用"CPLD+FIFO+MCU"的结构,用CPLD对接收到的模拟图像信号进行同步,控制A/D对其进行采集并缓存进FIFO。在胶囊休眠期,由MCU将FIFO中的数据以FAT32文件系统的格式记录到CF卡中,为后续的图像文件管理、解读提供了便利。结果在体外实验中,本系统成功实现了图像信息的接收及存储任务,获得了清晰的图像。结论本系统结构紧凑、便于携带,在突发式信息的采集及存储方面具有一定的应用价值。

Objective In order to receive and store the image information transmitted by wireless capsule endoscope , a data receiving and storing system based on CF card outside human body is introduced in this paper.Methods By utilizing the structure of ‘CPLD＋FIFO＋MCU’ , this system synchronizes the analog image frames received , control the conversion of A/D and save the result in FIFO under the control of CPLD . And during the hibernation , MCU in the system reads the cache data and stores it into CF by the format of FAT32 file system, which is convenient for the further image data decode .Results The designed system receives and stores the transmitted signal successfully and a clear and complete image is achieved in the experiment in vitro.Conclusions The designed system is compact and portable and has certain application value in the burst signal sampling and storing .