基于Wi-Fi通讯的大功率光功率计的研制
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摘要
介绍了一种基于Wi-Fi无线通信技术的大功率光功率计的设计原理和实现方法。该光功率计以STM32为微控制器,采用热电堆探测器实现热电转换。它不但能通过ESP8266Wi-Fi模块支持与上位机实现无线通信,并且同时支持USB通信模式。该系统可以在0.19μm～15.0μm波长范围内实现100 m W～100 W激光功率的连续自动量程切换测量。该光功率计还具备了通过脉冲宽度调制(PWM)与0～5 V模拟信号电压输出方式去反馈控制激光器输出强度,以及外触发功能。测试结果表明,该光功率计不但可以很好地满足工程应用中大功率激光器输出功率的检测与控制,并且实现了基于Wi-Fi无线通信方式的移动式测量。
The design principle and implementation method of a high-power optical power meter based on Wi-Fi wireless communication technology is presented in this paper. STM32 is taken as the micro controller and thermopile detector is used to realize thermoelectric conversion in this meter. It not only supports wireless communication with host computer through ESP8266 Wi-Fi module,but also supports USB communication mode. The system can realize continuous automatic range-switching measurement of 100 mW ～ 100 W laser power in the wavelength range of 0.19μm～15.0 μm. The optical power meter also has the function of pulse width modulation( PWM) and 0～5 V analog signal voltage output to feedback control laser output intensity and external trigger. The test results show that the optical power meter can not only satisfy very well the detection and control of high power laser output power in engineering application,but also realize the mobile measurement based on Wi-Fi wireless communication mode.
The design principle and implementation method of a high-power optical power meter based on Wi-Fi wireless communication technology is presented in this paper. STM32 is taken as the micro controller and thermopile detector is used to realize thermoelectric conversion in this meter. It not only supports wireless communication with host computer through ESP8266 Wi-Fi module,but also supports USB communication mode. The system can realize continuous automatic range-switching measurement of 100 mW ～ 100 W laser power in the wavelength range of 0.19μm～15.0 μm. The optical power meter also has the function of pulse width modulation( PWM) and 0～5 V analog signal voltage output to feedback control laser output intensity and external trigger. The test results show that the optical power meter can not only satisfy very well the detection and control of high power laser output power in engineering application,but also realize the mobile measurement based on Wi-Fi wireless communication mode.
引文
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[3]钟如涛,秦应雄,唐霞辉.激光功率的微观波动对加工质量的影响[J].中国激光,2010,37(10):2638-2641.
[4]王骥,林杰华,谢仕义.基于无线传感网络的环境监测系统[J].传感技术学报,2015,28(11):1732-1740.
[5]孙志宏,王文义,刘华,等.多路激光功率平衡测量技术[J].中国激光,2009,36(6):1493-1497.
[6]雷卫亭.基于ARM的高精度激光功率计设计[J].电子测量技术,2014,37(4):96-99.
[7]王喆垚.微系统设计与制造[M].北京:清华大学出版社,2008.
[8] Bao M H. Analysis and Design Principles of MEMS Devices[M].The Netherlands:Elsevier B.V,2005.
[9]姚志红,宋寿鹏,胡晓婷.基于STM32的光功率计的设计[J].电子测量技术,2015,38(11):126-130.
[10] Keiser G. Optical Fiber Communications[M]. 3rd Ed. Mc GrawHill Edition Co. And Publishing House of Electronics Industry,2000:193-197.
[11]陈晨,王彪,李春光,等.采用4.8μm中红外量子级联激光器的痕量一氧化碳检测仪[J].光谱学与光谱分析,2014,34(3):839-842.
[12]王林涛,李开成,张健梅.低噪声光电检测电路的设计和噪声估算[J].武汉理工大学学报(信息与管理工程版),2001,23(3):16-18.
[13]彭辉丽.便携式通用光功率计的研究与设计[D].杭州:浙江工业大学,2013:16-20.
[14]陆惠宗,屠明亮,纪晨东,等.激光聚焦偏移测量微小位移方法研究[J].仪器仪表学报,2016,3(2):461-465.
[15]隋越,董明,郑传涛,等.差分式红外一氧化碳检测仪的研制[J].仪器仪表学报,2016,37(10):2282-2289.
[16]潘楠,伍星,刘益,等.线性痕迹激光检测信号自适应匹配算法研究[J].仪器仪表学报,2015,36(6):1372-1380.
[17]聂娅琴.基于锁相放大器的微弱信号检测研究[D].长沙:中南大学物理与电子学院,2014.
[18]章晓强,方飞,应可珍,等.一种基于插值的室内指纹定位系统设计与实现[J].传感技术学报,2017,30(4):596-602.
[19]陈斌涛,刘任任,陈益强,等.动态环境中的Wi-Fi指纹自适应室内定位方法[J].传感技术学报,2015,28(5):729-738.