河南科学
河南科學
하남과학
HENAN SCIENCE
2014年
8期
1478-1482
,共5页
空气质量%快速检测%电化学式传感器%电流电压转换
空氣質量%快速檢測%電化學式傳感器%電流電壓轉換
공기질량%쾌속검측%전화학식전감기%전류전압전환
air quality%rapid detection%electrochemical sensor%current to voltage conversion
为了普通民众能够准确得知室内空气污染状况，设计了一种涉及室内甲醛（HCHO）、氨（NH3）和苯（C6H6）这三种气体浓度的新型室内空气质量快速检测仪。该仪器主要通过气体传感器得到对应气体浓度的微弱电流信号，再通过一种新型的高精度信号处理电路和基于FPGA的模数转换电路得到对应气体的初始浓度值，结合室内环境气压、温湿度情况和修正算法得到更准确的浓度值。该仪器还具有浓度超标报警、测量数据打印输出等功能及检测精度高、速度快、稳定性好、携带方便等优点。
為瞭普通民衆能夠準確得知室內空氣汙染狀況，設計瞭一種涉及室內甲醛（HCHO）、氨（NH3）和苯（C6H6）這三種氣體濃度的新型室內空氣質量快速檢測儀。該儀器主要通過氣體傳感器得到對應氣體濃度的微弱電流信號，再通過一種新型的高精度信號處理電路和基于FPGA的模數轉換電路得到對應氣體的初始濃度值，結閤室內環境氣壓、溫濕度情況和脩正算法得到更準確的濃度值。該儀器還具有濃度超標報警、測量數據打印輸齣等功能及檢測精度高、速度快、穩定性好、攜帶方便等優點。
위료보통민음능구준학득지실내공기오염상황，설계료일충섭급실내갑철（HCHO）、안（NH3）화분（C6H6）저삼충기체농도적신형실내공기질량쾌속검측의。해의기주요통과기체전감기득도대응기체농도적미약전류신호，재통과일충신형적고정도신호처리전로화기우FPGA적모수전환전로득도대응기체적초시농도치，결합실내배경기압、온습도정황화수정산법득도경준학적농도치。해의기환구유농도초표보경、측량수거타인수출등공능급검측정도고、속도쾌、은정성호、휴대방편등우점。
In order to know the indoor air pollution accurately for ordinary people,we put forward a kind of new rapid detection instrament for indoor gas concentrations which relate to these three gases:formaldehyde(HCHO), ammonia(NH3)and benzene(C6H6). The instrument mainly obtains a weak current signal of relative gas concentration through the gas sensors,then gets the initial concentration values of gas through a new type of high precision signal processing circuit and the analog-to-digital conversion circuit based on FPGA ,combining with the indoor environment pressure,temperature and humidity conditions and correction algorithm to obtain a more accurate concentration values. The instrument also has the alarm of concentration above the standard ,data print output functions and a few good features such as high precision,fast speed,good stability,convenient carrying and so on.
