藻类分类检测的设计与实现

摘要

叶绿素a在特定光照条件下产生的荧光光谱,提供了水体中藻类的种群结构及含量信息,通过研究该光谱,能够分析水体中藻类的种类及含量.设计的藻类分类检测仪,用五种特定波长的LED激发藻类溶液产生荧光信号,由光电倍增管接收该信号,并通过调制解调的方法实现了微弱荧光信号的检测.采用某公司的低功耗微处理器msp430F149做主控芯片,对检测到的模拟信号进行A/D转换,并通过串口与上位机通信,由上位机软件对数据进行实时分析或者对原始数据进行存储.%The fluorescence spectra produced by Chlorophyll a in a particular light condition supplies information about population structure and concentration of algae.The algae 's category and content can be analyzed based on the fluorescence spec-tra.The algae classification detector designed utilizes five LEDs with special wavelength each to excite the algae solution to produce the fluorescence signal, and detect the weak signal by a PMT though modulating and demodulating method.Based on the low-power microprocessor msp430f149 from Ti,the system transfers the analog signal to digital signal, and communicate with the computer that will analyse or store the original signal.