高等级生物安全实验室的自动控制方法*
Control method of automatic control system in high-level biosafety laboratories
摘要：
介绍了高等级生物安全实验室对自动控制系统的要求。通过对核心工作间、化学淋浴消毒间及防护服更换间管道风量调节阀的分析，分别研究了其压力控制方法。深入分析了通风空调故障情况下的机组切换过程。在生物安全实验室空调自动控制系统正常运行及故障情况下，该控制方法均能够保证实验室压力的稳定及有序的压力梯度。强调了自动控制系统对人员及环境安全的重要性。
Abstract：
Presents the automatic control system requirements in high-level biosafety laboratories. Studies the pressure control method through analysis of the air control valve of the core workshop, chemical shower room and protective clothing replacement room. Analyses the fan switching process in the case of ventilation and air conditioning failure. Concludes that the control method can ensure the stability of laboratory pressure and orderly pressure gradient under the conditions of normal operation and failure. Emphasizes the importance of automatic control system to safety of human and environment.
Keywords:biosafety laboratory, automatic control system, pressure difference, fan, air control valve, inverter