电子器件Issue(3)：632-635,4.DOI:10.3969/j.issn.1005-9490.2015.03.031
基于C8051 f040单片机的光离子化气体浓度检测电路设计∗
Design of Detection Circuit for Photoionization Gas Concentration Based on C8051f040 Microcontroller
摘要
Abstract
Gas concentration can be measured by detecting the photoionization micro-current. C8051f040 microcon-troller is used as the core device,using the internal ADC and signal acquisition unit to design a measurement system that can be measured gas concentration within the range of 0~200×10-6 and real-time detection with digital display. The system by using the metal shielding signal acquisition unit and in the software programming combining sam-pling,digital filtering method improved the SNR of the system. In computer automatic distribution system the con-centration of dimethyl ether is tested,which showed the error did not exceed the scope of 0.07×10-6,together with fast response and reliable work made it work properly in the practical application.关键词
光离子化/数据采集/I-V转换/过采样/数字滤波/浓度计算Key words
photoionization/data acquisition/I-V converter/oversampling/digital filtering/concentration calculation分类
信息技术与安全科学引用本文复制引用
高利聪,梁庭,孙玉虹,周雷刚..基于C8051 f040单片机的光离子化气体浓度检测电路设计∗[J].电子器件,2015,(3):632-635,4.基金项目
国家自然科学基金项目(51075375) （51075375）
