System and method for detecting multi-parameter of up-conversion luminescent particles

The invention relates to system and method for detecting multi-parameter of up-conversion luminescent particles. The system comprises an illumination unit, a sample cell, a power detection unit, a transmitted light detection unit, a scattered light detection unit, an up-conversion luminescent detection unit, a power detection unit pre-amplification circuit, a transparent light detection unit pre-amplification circuit, a scattered light detection unit pre-amplification circuit, a control and data acquisition unit and a data processing unit. The bigger measured offset caused by slight fluctuation of a light source is compensated through detecting the power of the light source; and the turbidity and the concentration of a UCP suspension are detected through simultaneously collecting the up-conversion luminescence, the transmitted light and the scattered light of the particles. The ratio of the scattered light to the transmitted light of the UCP suspension to be detected and an up-conversion luminescent signal are compared with a standard work curve to obtain the turbidity value and the concentration value of the UCP suspension sample to be detected. The invention has the advantages of high sensitivity and reliability, favorable stability, simple structure, lower cost and low requirement on an operator, is easy for assembling and correcting, and the like.