CAJ | 학술논문

目前天然气管道分布范围广泛，针对常见的瓦斯检测仪精度低、可靠性差、功能较单一以及不便于集群控制等不足，设计了一种基于RS-485总线的瓦斯浓度检测仪。以Atxmega32a4处理器为核心，基于RS-485总线对天然气管道不同位置进行瓦斯浓度检测，将浓度信息及时上传到上位机，便于及时发现瓦斯微量泄漏点的位置。对于每个独立的检测仪，都可以通过红外遥控器进行复杂环境中的零点校准、增益校准、设备地址编码、操作密码设定、高低限报警阈值设定等功能。试验表明，该燃气瓦斯浓度检测仪具有测量精度高、稳定性好、功耗低、安全性好、操作方便等优点，具有很高的推广价值。
목전천연기관도분포범위엄범，침대상견적와사검측의정도저、가고성차、공능교단일이급불편우집군공제등불족，설계료일충기우RS-485총선적와사농도검측의。이Atxmega32a4처리기위핵심，기우RS-485총선대천연기관도불동위치진행와사농도검측，장농도신식급시상전도상위궤，편우급시발현와사미량설루점적위치。대우매개독립적검측의，도가이통과홍외요공기진행복잡배경중적영점교준、증익교준、설비지지편마、조작밀마설정、고저한보경역치설정등공능。시험표명，해연기와사농도검측의구유측량정도고、은정성호、공모저、안전성호、조작방편등우점，구유흔고적추엄개치。
At present, the natural gas pipelines are distributed widely, while the commonly used gas detectors features shortages, e. g. , low accuracy, poor reliability, unitary function, and not easy to cluster control, etc. , thus the gas concentration detector based on RS-485 bus has been designed. With Atxmega32a4 as the core, the gas concentration at different location of the natural gas pipeline are detected based on RS-485 bus, and the concentration information is uploaded timely to host computer, the location where micro leakage of gas occurs can be found on time. For each standalone detector, the functions of zero point calibration, device address encoding, operation password setup, high/low alarm threshold setting can be conducted under complex environment through infrared remote controller. Experiments show that the gas concentration detector possesses many advantages, including high accuracy, good stability, low power consumption, good security, easy to operate;therefore it provides good promotional value.