面向护理器械超声波清洁的超声波发生器设计

Design of Ultrasonic Generator for Ultrasonic Cleaning of Nursing Instruments

护理器械的清洁问题直接关系到患者的安全和健康,对其清洁效果进行改进至关重要。鉴于此,实验对超声波的发生器清洁模块进行重设计。实验过程中考虑到电流的实际输出情况与效率问题,选取单相全桥逆变电路STM32单片机进行主功率与控制系统电路设计核心;接着对控制系统与主程序系统等多个方面进行了全面的设计。结果显示,谐串联振频率信号驱动下,电流最大值是5.5 A。在研究所设计的模糊PI控制下,时间推移至0.015 s左右便顺利完成对谐振频率的跟踪,响应速度更快。对剪刀类、盘碗类以及钳持类三类护理器械进行清洁,实验组的清洗合格率均最高。以上结果表明所构建超声波发生器系统十分可靠,能够对不同类型的护理器械进行有效清洗,最终满足医疗要求。

The cleanliness of nursing equipment is directly related to the safety and health of patients,and improving its cleaning effect is crucial.In view of this,the experiment redesigned the cleaning module of the ultrasonic generator.During the experiment,taking into account the actual output of current and efficiency issues,the single-phase full bridge inverter circuit STM32 microcontroller was selected as the core of the main power and control system circuit design;Subsequently,a comprehensive design was carried out on various aspects such as the control system and main program system.The results show that the maximum current driven by the harmonic series frequency signal is 5.5 A.Under the fuzzy PI control designed by the research institute,the tracking of the resonant frequency can be successfully completed after about 0.015 s econds,resulting in faster response speed.The experimental group had the highest cleaning pass rate for three types of nursing instruments:scissors,plates and bowls,and pliers.The above results indicate that the constructed ultrasonic generator system is very reliable and can effectively clean different types of nursing instruments,ultimately meeting medical requirements.