Design of a Handheld POCT Fluorescence Detection System

• 1、School of Electronics and Information Engineering,Tianjin Polytechnic University,Tianjin 300387

Abstract：Fluorescence technology is widely used in medical detection. In order to timely and effectively detect weak fluorescent signals, a handheld POCT fluorescent detector was developed. The device uses a 32-bit STM32F103VET6 embedded system as a micro-controller, The 12-bit analog-to-digital converter is controlled to sample the electrical signals collected by the photoelectric sensor and perform subsequent signal processing, 9 kinds of standard concentration fluorescent solutions of 10~50mg/L were used as test objects. Safran 7-FRSpec series fluorescence spectrum test system as a contrast instrument. Simultaneously, five concentrations of fluorescent solutions were accurately configured to perform verification experiments under the same experimental conditions. The results show that the correlation coefficient between the five groups of experimental data and fitting curve of data measured by fluorescence spectroscopy system is 0.924, The data of RMSEP is 0.083v. It has a good application prospects.

Keywords： Fluorescent technique Fluorescence detection POCT Correlation coefficient