1、 毕毕 业业 设设 计计(论文)(论文) 题题 目:目:脉冲光纤激光器光功率计的设计与研究 学学 院:院:仪器科学与光电工程学院 专专 业:业:测控技术与仪器(光机电一体化) 摘要 I 摘摘 要要 光纤激光器具有免调节、免维护、高稳定性等优点,利用光电传感器技术和单片机控制技术相 结合的方式来测量激光功率的方案,是非常普遍和有效的一种方式,并且光纤激光器也被广泛应用 于低功率的打标、雕刻等,同时向更高功率的金属和陶瓷的切割、焊接方面发展。 本课题分析了脉冲光纤激光器的基本原理,并且详细指出了测量并显示激光功率的思路和所需 考虑的问题,通过调试并分析系统的设计结构,最终完成对光纤激光器整体功率进
2、行检测及显示。 论文工作主要体现在以下几个方面: (1)对采集的激光信号的滤波,放大电路。 (2)通过峰值保持电路将交流信号转化为直流的、峰峰值信号。 (3)STC89C52 单片机部分的设计与软件编程。 该系统电路设计合理、工作稳定、性能良好、检测速度快、计算简单、易于做到实时控制,并 且在测量精度方面能达到工业实用的要求。 关键词关键词:光纤激光器;PIN 光电管;STC89C52 单片机;功率 Abstract II Abstract Optical fiber laser with avoided adjustment, free maintenance, high stability
3、 and other advantages, using photoelectric sensor technology and single-chip microcomputer control technology to measure the way of the combination of the laser power solution, is very common and effective way, and optical fiber laser is also widely used in low power marking, sculpture, etc, and at
4、the same time to a higher power of metal and ceramic cutting, welding aspect development. This issue analyzes the pulse optical fiber laser fundamental principle and detailed measure and display pointed out the laser power train of thought and required consider problems, through the commissioning an
5、d analysis the design of the system structure, finally complete the whole of optical fiber laser power detection and display. The thesis work is mainly reflected in the following areas: (1) Collected laster signal fitering, amplification circuit. (2) Peak hold circuit to AC signals DC, peak to peak
6、signal. (3) STC89C52 microcontroller part of the design and software programming. The system circuit design reasonable, stable, the performance good, detection speed, simple calculation, easy to do real-time control, and in the measurement precision can reach industry practical requirement. Keywords: Fiber laser; PIN phototub; STC89C52 singlechip; Power 目录 III 目目 录录 摘摘 要要 . I ABSTRACT . II 目目 录录 .III 第一第一章章 绪论绪论 .1 1.1 课题背景及发展现状.1 1.2 课题研究的意义.2 1.3 课题研究的内容 .2 第二第二章章 光纤