CAJ | 학술논문

针对分析化学法检测气体成分存在无法连续测定和现场测定的缺陷，设计了一种利用三电极电化学传感器作为气敏元件的实时检测方案检测生物质发酵沼气中的硫化氢浓度。方案以 MSP430F169单片机为核心，借助电化学传感器对硫化氢浓度信息进行采集、处理、显示和传输。系统达到了实际检测的精度需求，且测量具有高度的可重复性和线性度。此外，系统采用了中位值滤波和温度补偿算法，提高了系统的稳定性。
침대분석화학법검측기체성분존재무법련속측정화현장측정적결함，설계료일충이용삼전겁전화학전감기작위기민원건적실시검측방안검측생물질발효소기중적류화경농도。방안이 MSP430F169단편궤위핵심，차조전화학전감기대류화경농도신식진행채집、처리、현시화전수。계통체도료실제검측적정도수구，차측량구유고도적가중복성화선성도。차외，계통채용료중위치려파화온도보상산법，제고료계통적은정성。
The gas composition can not be measured continuously and locally by using analytical chemistry method,a real-time testing system is designed to detect the hydrogen sulfide concentration in the fermentative biogas by using 3-lead elec-trochemical cell as gas sensitive element.Using microcomputer MSP430F169 as the core,the system processes the concen-tration of hydrogen sulfide ranged from signal transmission,acquisition,processing to display.The detecting precision is a-chieved and high degree of repeatability and linearity is also possessed.In addition,the system stability is improved by using the median filter algorithm and temperature compensation algorithm.