CAJ | 학술논문

利用液体中微小颗粒对光的散射作用原理，设计了一种检测测量溶液中颗粒浓度的装置。该检测装置选用波长为830 nm 的红外 LED 作为光源，在与入射光成90°的散射角处测量散射光强度，以光敏二极管为光电接收器，并通过信号处理将检测得到的光信号转换为电信号，从而获得与液体中的固体颗粒浓度相关的电信号。由于液体中颗粒浓度对散射光强具有决定作用，进而得到待测液体中固体颗粒浓度与电信号的关系。为避免环境光造成干扰，系统采用不透光暗腔，并采用非接触式测量。
이용액체중미소과립대광적산사작용원리，설계료일충검측측량용액중과립농도적장치。해검측장치선용파장위830 nm 적홍외 LED 작위광원，재여입사광성90°적산사각처측량산사광강도，이광민이겁관위광전접수기，병통과신호처리장검측득도적광신호전환위전신호，종이획득여액체중적고체과립농도상관적전신호。유우액체중과립농도대산사광강구유결정작용，진이득도대측액체중고체과립농도여전신호적관계。위피면배경광조성간우，계통채용불투광암강，병채용비접촉식측량。
A colloidal concentration measurement setup is constructed based on the tiny particles in solution scatter light. In this setup,an LED with central emitting wavelength 830nm is employed.At the 90 degree,the scattered light is collected and measured using a photosensitive diode as a detector.Then the optical signal is transferred to the electrical signal.Since the colloidal concentration is related to scattered light intensity,the output electrical signal is also related to the colloidal concentration.To avoid the disturbing signal by surrounding light,a nontransparent cavity with non-contact measurement is utilized.