无线供电线状LED旋转灯的研制  

Research and Development of the Wireless Powered Line-Shape Rotary LED Light

作　　者：崔远慧[1] 陈鹤升 谈博强 王智森[1] 

机构地区：[1]大连工业大学信息科学与工程学院,辽宁大连116034

出　　处：《自动化仪表》2017年第12期63-66,共4页Process Automation Instrumentation

摘　　要：从降低LED显示系统的功耗出发,研制了一款基于电磁感应原理、由互感线圈无线供电的低功耗LED旋转灯。该旋转灯由3 V直流电源向直流电机和无线模块XKT-510供电;电机带动互感线圈的次级线圈转动,切割由XKT-510供电的初级线圈的磁场;次级线圈产生的感应电流经过整流、滤波和稳压后,向显示单元和主控单元供电。为了保证系统的稳定性,详细阐述了互感线圈的参数计算方法、整流二极管的参数计算方法和旋转灯系统的配重设计方案。设计了以STC15L2K08S2为主控芯片、由56个线状LED点阵排列显示的硬件电路,并给出了包括主控驱动电路、无线供电电路、AC-DC转换电路、恒流供电电路以及记录LED旋转圈数的起点检测电路的设计方案。经测试,该旋转灯的电源输出功率为0.024 W。利用T法检测该旋转灯的转速,所得最大相对误差为0.032%。测试结果表明,系统的稳定性较好、功耗较低。该旋转灯具有结构简单、经济实用的特点。它的成功研制对大型LED显示屏的实际应用有一定的指导意义,对利用LED进行其他非旋转显示控制也具有一定的理论参考价值。To reduce power consumption of LED display system, the low power consumption rotary LED light which is based on the principle of electromagnetic induction and wireless powered by mutual inductance coil is researched and developed. The DC motor and wireless module XKT - 510 are powered by a 3 VDC power supply; the motor drives the secondary coil of mutual inductance coil to rotate, which cuts the magnetic field of primary coil. The induction current generated by the secondary coil is rectified, filtered and regulated, to be the power supply of the display unit and main control unit. In order to ensure the stability of the system, the calculation methods of parameters of the mutual inductance coil, the parameters of the rectifying diode and the balance weight scheme of the rotary light system are expounded in detail. The hardware system including STC15L2K08S2 main control chip and a 56 linearly arranged LED dot matrix display unit is designed. The design scheme for the main control circuit, wireless power supply circuit, AC - DC conversion circuit, constant current power supply circuit and the turns number counting circuit are given. Having been tested,the output power of the power supply of rotary light is 0. 024 W. The rotational speed of the rotary light is tested by T method; the maximum relative error is 0 . 0 3 2%. The test results show that the system features good stability and low power consumption. The rotary light is compact,and offers certain practical significance. The successful research and development possess practical reference for the practical application of large LED display screen, and also has certain theoretical reference value for other display control using LED.

关 键 词：电磁感应 互感线圈 无线供电 LED 低功耗 旋转灯 恒流 

分 类 号：TH703[机械工程—仪器科学与技术] TP202[机械工程—精密仪器及机械]