生物体液在线光纤光谱仪的研制

介绍了一种直接检测生物体液的光纤光谱仪，根据光纤和毛细管的特性，作者设计了一种特殊的光纤探头，该探头可以直接插入生物体内，通过毛细管采集生物体液，并直接引入光路中，即样品不需进行任何预处理就可以直接测量。为了提高测量灵敏度，探头中的光纤采取分层排列以增加体液在光路中的路程，该探头可使测量过程简化并且实现在位监测。利用计算机的并行口输出脉冲以控制步进电机而动色耗棱镜转动，用光电位增管接收其光谱信号，

Development of an Optical Fiber Spectrograph for Detecting Living Liquid in Situ

Introduces a fiber optical spectrograph which can directly measure the liquid of a living body. Based on the property of optical fiber and capilliary, the authors design a special optical fiber probe which can directly insert into the living body to sample the liquid and plunge the liquid into the optical path. That is, the sample liquid can be directly tested without any pre processing. So this operation simplifies the detecting process and perform measurement in situ. In order to improve the sensitivity of the probe, the optical fibers in the probe were distributed in layers so as to increase the optical length of the living liquid. In other hand, the computer controls the stepward motor to rotate through the pulses emitting from the parallel port of the computer so as to drive the quartprism rotating. The optical signal is accepted by the photomultiplier and sampled by the computer. This spectrograph can display in time the spectrum of the living liquid on the screen. Through analysing the spectrum of the living liquid, many living parameters can be detected.