激光医疗设备光束质量远程监控系统设计
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摘要
当前有关激光光束质量控制与评价的研究成果误差较大,可行性较差,提出并设计激光医疗设备光束质量远程监控系统。简要分析了激光光束发射原理和光束质量相关参数,并依据系统运行需求设计系统主要功能模块。结合系统硬件功能模块,系统软件控制流程为:通过安装自动控制模式的步进电机,预设步长后,将指令传输给系统上位机。相应指令通过监控的激光束经衰减器、聚焦与反射传输至相机,利用图像采集卡采集激光光斑图像并进行相应处理。拟合处理后的光斑图像,基于透镜变换定义,自动计算出远场发散角和光束腰宽度值与激光光束质量因子M2,通过计算结果平均值提升监控精度,实现激光医疗设备光束质量远程监控系统设计。通过实验证明,该系统监控误差小,监控准确度高,运行性能良好。
The error of laser beam quality control and evaluation is large and the feasibility is poor. Therefore,a laser medical equipment beam quality remote monitoring system is proposed and designed. The principle of laser beam emission and the parameters of beam quality are briefly analyzed,and the main function modules of the system are designed according to the operating requirements of the system. Combined with the hardware function module of the system,the control flow of the system software is as follows: by installing the step motor of the automatic control mode,the instructions are transmitted to the upper computer of the system after the preset step size. The corresponding instructions are transmitted to the camera by focusing and reflection of the monitored laser beam through the attenuator.The laser spot image is collected by the image acquisition card and processed accordingly. After fitting the processed spot image,the far-field divergence angle and beam waist width value and laser beam quality factor M2 are calculated automatically based on the definition of lens transformation. The monitoring accuracy is improved by the average value of the calculated results,and the laser medical equipment beam quality remote monitoring system design is realized.The experimental results show that the monitoring error is small,accuracy is high,and running performance is good.
The error of laser beam quality control and evaluation is large and the feasibility is poor. Therefore,a laser medical equipment beam quality remote monitoring system is proposed and designed. The principle of laser beam emission and the parameters of beam quality are briefly analyzed,and the main function modules of the system are designed according to the operating requirements of the system. Combined with the hardware function module of the system,the control flow of the system software is as follows: by installing the step motor of the automatic control mode,the instructions are transmitted to the upper computer of the system after the preset step size. The corresponding instructions are transmitted to the camera by focusing and reflection of the monitored laser beam through the attenuator.The laser spot image is collected by the image acquisition card and processed accordingly. After fitting the processed spot image,the far-field divergence angle and beam waist width value and laser beam quality factor M2 are calculated automatically based on the definition of lens transformation. The monitoring accuracy is improved by the average value of the calculated results,and the laser medical equipment beam quality remote monitoring system design is realized.The experimental results show that the monitoring error is small,accuracy is high,and running performance is good.
引文
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[17]杨孝敬,焦清局,王乙婷.光束参数积对半导体激光器光束质量的评估[J].激光技术,2018,42(6):859-861.
[18]周宇,张国平,徐洪波,等.激光测距发射电路的设计[J].电子设计工程,2017,25(3):145-148.
[2]汪勇,刘斌,叶志斌,等.高峰值功率高光束质量光纤-固体混合放大激光系统[J].中国激光,2018,45(4):63-69.
[3]陈诚,郑加金,韦玮,等.基于CCD测量激光光束质量m2[J].发光学报,2017,38(5):642-647.
[4]姜曼,马鹏飞,周朴,等.基于多层电介质光栅光谱合成的光束质量[J].物理学报,2016,65(10):103-111.
[5]屈鹏飞,王石语,过振,等.热透镜控制激光光束质量技术研究[J].应用光学,2017,38(1):120-125.
[6]苏晋,路大举,马沁巍,等.基于高速图像分析的激光器光束稳定性及光斑质量评价方法研究[J].实验力学,2017,32(4):445-451.
[7]程和平,曾梁楠,黄智蒙,等. 980nm连续激光在金属医疗器械表面高效灭菌的实验研究[J].第三军医大学学报,2017,39(9):878-883.
[8]丁仁杰,吴志波,邓华荣,等.高自动化卫星激光测距系统研究与设计[J].激光与红外,2017,47(9):1102-1107.
[9]叶兵,马天明,田野. Cr,Tm,Ho:YAG激光器耦合效率与束腰关系实验研究[J].合肥工业大学学报:自然科学版,2017,40(10):1360-1364.
[10]张冬云,董东东,张晖峰,等.激光熔覆过程光束能量衰减的模拟[J].北京工业大学学报,2017,43(4):537-545.
[11]董理治,许冰,杨平,等.中国科学院光电技术研究所固体板条激光器光束净化研究进展[J].光电工程,2018,45(3):27-35.
[12]于旭东,黄一桂.程长控制镜温度效应及耦合场分析[J].光学精密工程,2018,26(3):523-530.
[13]王拯洲,夏彦文,李红光,等.万焦耳级激光装置的焦斑诊断[J].光子学报,2016,45(8):116-121.
[14]杨磊,钟哲强,吴真,等. DLA光源质量对光栅-外腔谱合成系统光束质量的影响[J].光谱学与光谱分析,2016,36(10):3381-3387.
[15]靳全伟,谭亮. 400Hz高光束质量高功率短脉冲激光器[J].强激光与粒子束,2018,30(4):0-0.
[16]贾鹏,秦莉,陈泳屹,等. 780nm波段低填充因子半导体激光器列阵的光束质量研究[J].半导体光电,2016,37(1):27-29.
[17]杨孝敬,焦清局,王乙婷.光束参数积对半导体激光器光束质量的评估[J].激光技术,2018,42(6):859-861.
[18]周宇,张国平,徐洪波,等.激光测距发射电路的设计[J].电子设计工程,2017,25(3):145-148.