摘要
针对国内现场配制标准气的设备大多采用开环控制、控制精度较差的现状,在结合气体质量流量控制器原理、红外气体检测原理、模糊PID控制原理等理论基础上,构建了以DSP TMS320F2812为主控芯片的动态配气系统的总体结构,并给出了红外检测仪的硬件设计、配气过程中模糊PID的软件设计、系统整体的软件设计。结果表明:此配气仪配气精度达1%,稳定性良好、响应快,且操作简单方便、体积小,可以实现任意低浓度标准气的配制,实现了预期设计目标,可以推广使用。
In view of the present situation that the domestic equipments for the configuration of the standard gas mostly adopt open loop control and have poor accuracy control, combined with theories such as gas mass flow controller principle, infrared gas detection principle and fuzzy PID control principle, the whole structure of dynamic gas distribution system using DSP TMS320F2812 as the main control chip was constructed, and the hardware design of the infrared detector, the software design of fuzzy PID in distributing gas and system software design were given.The results show that the gas meter has the accuracy of 1%, good stability, fast response, simple and convenient operation, and small volume.The gas meter can achieve configuration of arbitrary low concentration standard gas, realize the desired design goals and can be widely used.
出处
《仪表技术与传感器》
CSCD
北大核心
2015年第4期17-20,共4页
Instrument Technique and Sensor
