基于光度测量的COD检测  

COD detection based on photometric measurement

作　　者：马胜前[1] 周蓉[1] 陈彦[1] 赵丹[1] 

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《传感器与微系统》2010年第9期116-118,共3页Transducer and Microsystem Technologies

基　　金：甘肃省科技攻关计划资助项目(2GS047-A52-002-07)

摘　　要：本系统以集成电路模块,A/D和AT89C52为核心,利用硅光电池和运放实现光电转换,测量入射和透射光的强度,依据朗伯—比耳比色原理,微控器可自动计算出溶液的化学需氧量(COD)值。系统还具有测试数据的打印,实时时钟,超量程报警等功能。同时系统还提供PC串口通信与数据库管理系统,便于测量结果的保存和分析。This system takes the IC, A/D and AT89C52 as key module, according to Lambert-Bill＇s law and colorimetric principle, uses silicon photovohaic cells and operational amplifier to realize photoelectric conversion. Incident light and transmitted light intensity of liquid are measured. COD of the liquid sample can be automated calculated by microcontroller. Additionally, the system still has the function of print, clock and alarm etc. And the system still offers PC communication and database management subsystem to store and analyze the result of COD measurement.

关 键 词：光度测量 光电转换 化学需氧量 智能测量 单片机 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]