基于DSP的粉煤灰碳含量检测仪的设计  

The design of unburnt carbon detector in fly ash based on DSP

作　　者：宋燕燕[1] 赵元黎[1] 代攀[1] 冯艳平[1] 

机构地区：[1]郑州大学物理工程学院,郑州市450001

出　　处：《微计算机信息》2009年第14期136-138,共3页Control & Automation

摘　　要：本文应用DSP技术和光声效应基本原理设计粉煤灰碳含量的检测仪。该仪器以TMS320F2812为检测系统的核心模块,将光声池中产生的光声信号经滤波放大电路调理后送DSP,由AD转换模块进行数据采集,采用虚拟数字锁相放大器技术,从噪声中提取微弱信号。液晶显示模块显示所测样品的碳含量。该仪器具有快速、精确、性价比高、操作方法简单等优点。This article using DSP technology and fundamental principle of photoaoustic response designed the unburnt carbon detector in fly ash. The equipment takes TMS320F2812 as the core module of the detection system . Photoaoustic signal , generated from photoaoustic cell , is sent into DSP for AD converter modules to collect data after dealt by filter amplifier circuit . Using virtual digital lock-in amplifier extracted weak signal from noise , and LCD module showed carbon content in fly ash of measured samples . The advantages of the instrument is fast,accurate,high performance-to-price ratio,simple operation and so on .

关 键 词：光声效应 TMS320F2812 粉煤灰碳含量 数字锁相放大器 

分 类 号：TP216.1[自动化与计算机技术—检测技术与自动化装置]