高原手术方舱微环境温度控制系统设计

Design of microenvironment temperature control system of plateau surgical shelters

高原环境昼夜温差大,空气稀薄,手术方舱要抵抗较大温度冲击,工作环境恶劣,对微环境温度控制系统的抗干扰能力提出了更高的要求。传统微环境温度控制多采用仪表显示、开关控制,抗干扰能力差、故障率高。以可编程控制器(PLC)为控制核心,采用触摸屏为人机界面,设计一套高原舱室微环境温度控制系统,实现温度实时监测与控制,有效控制方舱升温与降温设施,抵御高原温度冲击,合理调节暖风机空燃比,适应高原环境。该文论述了高原手术方舱微环境控制系统硬件、软件和算法设计。

Plateau environment has a wide range of diurnal temperatures and thin air. The surgical shelter needs to resist the huge temperature shock and work in harsh environments,placing higher noise immunity requirements on the microenvironment temperature control system. The traditional microenvironment control of surgical treatment shelters mostly use instrument display and switch control,with a high failure rate and functional dispersion. We have designed a plateau microenvironment temperature control system with PLC as the control center and the touch screen as the Human Machine Interface so that real-time monitoring and control of temperature is achieved and the plateau temperature shock is resisted while the heater fuel ratio can be adjusted properly to adapt to plateau environment. This paper describes the control system hardware,software and algorithm design in detail.