池塘偏心式水动力装备控制系统设计与实现

水体流动是池塘水质调控的基础性条件,高效率的水动力形成与控制具有重要价值。偏心式水动力装备从增氧和水动力形成两个方面达到了较好的平衡,基于池塘精细化生态因子调控的需求,本文研发了包含传感器、数据处理、存储、输出及无线通讯模块的控制硬件系统,开发了基于溶氧和水动力双参数的控制算法,并具备弱电自主检测和强电断路校核功能以增强系统的可靠性。控制系统通过实时监测溶氧值,结合水动力设备不同功率的作用范围,实现了具有一定自适应能力的功率输出控制,从溶氧、水动力范围及能耗的角度实现综合性效果。现场试验表明,根据池塘生态因子变化规律,在满足池塘增氧需求的前提下,基于所开发控制系统的偏心式水动力装备与同功率的其它增氧设备相比,水动力流速衰减更慢,设备周边同范围内水动力提升效果明显,综合能耗下降约24%。该控制系统的设计和实现为偏心式水动力装备的推广应用打下了良好基础。

Design and realization of pond eccentric hydrodynamic equipment control system

Water flowing is the basic condition for the water purification of pond. High efficient water hydrodynamic forming and control are with great value. The eccentric hydrodynamic equipment provides a good balance on the oxygenation and hydrodynamic forming. Based on the requirement of pond fine ecological factor regulation, the control system hardware system including sensor, data processing, storage, output and wireless communication components is constructed. Control algorithm based on oxygenation and hydrodynamic parameters is developed, which also contains the low voltage sub-system self-detection and high voltage sub-system checking function. By real time supervision of the dissolved oxygen and combined with the covering range on different power condition, the control system achieves adaptive power output control and reaches a comprehensive effect from the view of oxygenation, hydrodynamic and energy cost. Based on the pond ecological factors and the requirement of meeting the pond oxygen demand, the practical experimental comparison results between the eccentric hydrodynamic equipment with the designed control system and other oxygenation equipments show the power flow under the new equipment decreases more slowly, and the hydrodynamic effect of the same area is dramatically increased. It can save about 24% of energy cost. The above results lay a solid foundation for the wide application of eccentric water power equipment.