HB-LED医用手术头灯控制系统的设计与实现  

Design and implementation of control system for HB-LED medical surgical headlight

作　　者：陈正龙[1,2] 陈雄 郭世俊[1] 胡兆燕[1] 

机构地区：[1]上海理工大学医疗器械工程研究所,上海200093 [2]上海医疗器械高等专科学校精密医疗器械系,上海200093 [3]湖南省宁乡县中医院,湖南长沙410600

出　　处：《电子技术应用》2011年第12期56-59,共4页Application of Electronic Technique

摘　　要：研制了以高亮度LED为光源的医用手术头灯控制系统。该系统由电源路径管理电路、充电管理电路、LED驱动电路和调光电路组成。采用外部电源或者电池双电源供电,可驱动5W的大功率白光LED,同时具备LED亮度连续调节和电池充电管理等功能。LED亮度调节实验和锂电池充电实验表明该控制电路很好地符合了预期的设计要求,LED控制电路具有很强的通用性,体积小、价格低廉,适合于便携式电子产品的设计应用。The control system for medical surgical headlight with HB-LED as light source is developed in response to clinical demands. The system mainly comprises a power-path management circuit, charge management circuit, LED driver circuit and dimming circuit. Powered from both a wall adapter and a battery, it is able to drive an up to 5 W HB-LED and has functions of continuous LED brightness adjustment and Li-Ion battery charge management. The experimental results indicate that proposed control circuits perfectly meet desired requirements. It features small size and low-cost and is ideal for use in portable electronic devices.

关 键 词：医用手术头灯 高亮度LED 锂离子电池 充电管理 BQ2057 PAM2863 

分 类 号：TM93[电气工程—电力电子与电力传动]