单片机的HSI输入口在线阵CCD输出信号采集中的应用

The High Speed Input of Microcontroller Used in Output Signal Collection of Linear CCD

在应用CCD图象传感器进行微小尺寸检测系统的研究与开发中,CCD输出信号经过二值化处理后,输出与尺寸相对应的高低电平,传统的检测高低电平持续时间采用的是填入计数脉冲的方法,然后乘以一当量系数,该方法复杂精度不高。采用80C196KC单片机的高速输入口(HSI)进行CCD输出信号检测,可以直接读出二值化高、低电压持续时间值,再乘以当量系数,就可以直接检测出被测尺寸大小。该方法检测原理简单、操作方便、检测精度高、具有较好的应用效果。

On the research of dimension measuring and detecting system used CCD sensor, the output of CCD sensor is dealed with two value number, then output the high and low voltage adapt to the size, the tradition method to detect the persist time of the high and low voltage is filled in some counted pulse, then a certainly value is multiplied, the method is complex and no precision. But the HSI of 80C196KC is used to detect the output single of CCD sensor, it’s high and low time value is detected, and then a certai...