为了满足深海极端环境科学研究的需求, 设计了深海极端环境模拟装置。对系统结构以及工作原理进行分析, 介绍了培养釜、温度控制子系统和压力控制子系统。重点针对当前模拟装置压力控制精度不高的问题, 设计了高精度压力传感器, 并提出一种迭代自学习PID压力控制算法, 实现系统压力自动检测和连续控制, 同时带有观察窗的培养釜结构可以实现微生物状况实时观测。实验结果表明, 该系统能够实现深海极端环境参量高精度模拟, 可以为深海极端环境科学研究提供很好的平台。
According to research demand, a deep-sea extreme environment simulator was designed. This paper gave an analysis of system architecture principles, and expounded training vessel, temperature control system and pressure control system. Because of low pressure control accuracy for the current simulator, a high precision pressure sensor was designed and an iterative learning PID pressure control algorithm was put forward, which could automatically detect the system pressure and continuously control it. At the same time, a training vessel with two observation windows could take real-time observation of microorganism. Experiments showed that the system can control the vessel pressure accurately and simulate the deep-sea environment; it provides a good platform for deep-sea extreme environment research.
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