基于双路线阵CCD的自动电子数粒机

Automatic electronic granulation counter based on double linear array CCD

为满足医药包装工业对药粒计数的高速高精度的要求,设计了基于双路线阵CCD的电子数粒机。数粒机由LED光源,双路线阵CCD芯片TCD1209D,EPM 3064A型CPLD作为双路CCD的同步驱动电路,以高速A/D转换器TLC 5510为核心的同步数据采集卡,主控计算机组成。检测通道宽度400 mm,对药粒的水平分辨率为0.1 mm,线阵CCD的驱动频率为10 MHz,对药粒的垂直分辨率为0.3 mm,采用软件二值化方法实现了对透光性不同的药粒的识别。实验表明:数粒机的计数准确可靠,计数速度达8000粒/min,并可以准确地识别残片与重叠药粒。

In order to meet the need of medicine packaging industry for high speed and precision,the electronic granulation counter is developed.The counter consists of LED light source,double linear array CCD chip TCD1209D,synchronously driving circuit for the double linear array CCD chip based on CPLD EPM 3064A,synchronously data acquisition card of the high speed A/D converter TLC 5510,and host computer.The test channel is 400 mm wide;the horizontal resolution on the medicine pill is 0.1 mm,the driving frequency of linear array CCD is 10 MHz and the vertical resolution on the medicine pill is 0.3 mm,software binarization method is used for identification on the medicine tablets with different light transmittance.The experimental results show that the count of electronic granulation counter is accurate and reliable,counting speed is 8 000 particles/min,and can correctly distinguish the broken tablets and the overlap tablets.