The fiber-optic sensing fluorescence detection system for Chinese traditional medicine injection based on charge-coupled devices

A method for the detection of Chinese traditional medicine injection concentration is designed which is based on the fiber transducer technology and the fluorescence analyzing technology. It adopts a sphere fiber-optics probe to realize the highly active caption and transmission of the fluorescence signal. The charge-coupled devices(CCD) is used to realize the high efficiency detection of the fluorescence spectrum. The fluorescence is highly active light spitted by the function of the spatial dispersion and plane focusing of the concave grating and the optoelectronic conversion of the CCD. It formatted the spectrum on the focal plane of the CCD. The spectrum is converted to the electric pressure signal by the CCD detection. The experiment indicates that the system has a minimum detecting limit of the density is 0.04ppm.The partial least squares (PLS) is used to get the the linear regression of the samples. The value of the RMSEP is 0.1631.