医疗车厢压力测控系统设计

Design for pressure detection and control system in medical compartment

目的 :研制一种医疗车厢压力监控系统,应对生物战及生物恐怖袭击,解决生物战剂所致伤病员的紧急后送和途中救治问题。方法:利用1台仪表和1个变送器实现医疗车厢正、负压的测量显示与报警功能,采取脉冲宽度调制(pulse width modulation,PWM)方式调节风机转速实现医疗车厢的压力控制。结果:该系统能够实现预期的要求,使医疗车厢在保证沿途环境不受污染的情况下能够通过生物战剂污染区运送伤病员,同时又能运送生物战剂所致伤病员和烈性传染病员。结论:该系统实现了医疗车厢过滤吸收器工作状态的在线监测,提高了伤病员救治的效率和可靠性,具有良好的军事效益。

Objective To design a pressure detection and control system in the medical compartment for bio-agent casualty emergency evacuation and en route treatment during responses to biological warfare or terrorist attack. Methods An instrument and a pressure transmitter were used for detection, display and alarm of positive and negative pressures in the medical compartment, and pulse width modulation was involved in to regulate fan speed and then to control the pressure in the compartment. Results The system proved its ability to evacuate bio-agent casualty and fulminating infectious patient with no pollution to the environment. Conclusion The system realizes on-line monitoring of the filter absorber in the medical compartment, enhances the efficiency and reliability of casualty care and thus gains high military benefits.