摘要溶解氧（DO）是微生物发酵过程中重要参数之一。本文介绍了基于泛布尔代数的溶解氧控制器控制算法和控制器硬件，它能够准确可靠地对溶解氧进行在线检测和控制。关键词发酵溶解氧单片机控制控制原理对溶解氧进行控制的目的是把溶解氧浓度值稳定在一定的期望值或范围内。在微生物发酵过程中，溶解氧浓度与其它过程参数的关系极为复杂，受到生物反应器中多种物理、化学和微生物因素的影响和制约。对这些参数进行精确实时在线测量是实现溶解氧自动控制的一个基本前提。Abstract Dissolved oxygen（DO）is one of major parameters in the process of microbe fermentation. In this paper，the hardware of dissolved oxygen controller and the control algorithms based on PanBoolean algebra are introduced. The controller is accurate and reliable for online detection and control of dissolved oxygen.Keywords Fermentation Dissolved oxygen Single chip computer Control