基于单片机的半自动生化分析仪系统设计  

Design of semi-automated bio- chemistry analyzer based on microcontroller

作　　者：陈裕国[1] 冉全[1] 钟时明[2] 

机构地区：[1]武汉化工学院电气信息学院,武汉430073 [2]武汉中达生物传感技术有限公司,武汉430035

出　　处：《仪器仪表用户》2006年第4期60-62,共3页Instrumentation

摘　　要：介绍一种以C8051F120单片机为控制器的半自动生化分析仪的系统设计。仪器采用吸光光度法测量原理,在测量方法上避免了模拟对数放大与运算;用步进电机控制选择8种波长的滤光片;用串行16位模/数转换器AD7715实现了高精度的数据采集;温度控制采用无触点的开关控制,并实现了PID调节。A semi-automated bio-chemistry analyzer based on C8051F120 microcontroller is introduced. With the measurement principle of spectrophotometry,the analyzer calculates absorbency by software .avoiding the mathematical formulas of logarithmic ratio amplifiers. Selects one of eight optical filters with step motor. Data acquisition system with high accuracy is based on 16 bits serial A/D converter AD7715. Temperature control system based on no touch switch has realized PID control.

关 键 词：单片机 生化分析 吸光度 

分 类 号：TH79[机械工程—仪器科学与技术]