摘要
为在航空转运过程中检测机载负压隔离方舱的环境数据,研制一款航空用负压方舱环境检测仪,由壳体、差压变送器、压力传感器、二氧化碳浓度传感器、氧气浓度传感器、温湿度传感器、数据处理模块、液晶显示屏与通用串行总线(USB)数据接口等部件组成负压方舱环境检测仪,可实时检测二氧化碳浓度、氧气浓度、温度、相对湿度、舱内与舱外压差和舱外气压等环境数据,数据处理模块收集数据处理后,由液晶显示屏实时显示数据与数据变化曲线,并通过USB数据接口提取检测数据.在航空环境使用时,该检测仪可无故障连续工作时间≥300 h,故障平均修复时间约为30 min,性能良好,检测精度较高,可为负压方舱的环境数据检测提供便利.
Abstract
In order to detect the environmental data of isolated cabin under various environmental conditions,a negative pressure cabin environment detector for aviation was developed,which was composed of a shell,a differential pressure transmitter,a pressure sensor,a carbon dioxide concentration sensor,an oxygen concentration sensor,a temperature and humidity sensor,a data processing module,a liquid crystal display(LCD)screen and USB data interface.It could environmental data such as carbon dioxide concentration,oxygen concentration,temperature,humidity,pressure difference between cabin and outside the cabin and air pressure outside the cabin in real time,the data processing module collected and processed the data,the data and data change curves was displayed in real time by the LCD screen,and the detection data was extracted through the USB data interface.When used in aviation environment,the detector could work continuously without fault for no less than 300 hours,and the average fault repair time was about 30 minutes,with good performance and high detection accuracy,which can provide convenience for the environmental data detection of negative pressure cabins,and is worthy of popularization.
国家科技期刊平台
NSTL
万方数据