介质溶液浓度的光电自动检测

OPTOELECTRIC AUTO MEASUREMENT FOR THE CONCENTRATION OF MEDIUM SOLUTION

CCD线阵是一系列光敏象素单元组成的集成器件,用来检测被测介质溶液因临界角效应而形成的明暗界线位移并转换为电信号。通过接口电路将信号送入微机,经数据处理后得到介质溶液的浓度,以实现其自动检测。

CCD(a line scanning image sensor)is an integrated device composed of a row of image photoactive elements.It is used to detect the displacement of shadow edge caused by the critical angle effect of the medium solution and to convert the displacement into electrical sign to be sent into a microcomputer through interface.After data processing,the microcomputer gives a display in the Concentration of the medium solution to accomplish auto-measurement.