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基于LabView的新型模块化信号检测方法 被引量:3

Novel Modularized Optical Signal Detection Method Based on LabView
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摘要 提出了一种基于模块化的LabView的光信号检测方法。基于该方法的实验系统由信号采集和数据处理两大部分组成。信号采集部分通过光电二极管将光强信号转换为电信号,利用放大器(AD620)、数模转换器(ADC0809)、单片机(AT89S51)、电平转换器(MAX232)和计算机(PC)完成对光信号的采集。数据处理部分主要利用LabView软件通过计算机的9针串口从信号采集部分获取数据,并对该数据进行进一步处理,最后输出光信号强度随时间变化的曲线。提出的设计方案充分利用了计算机强大的数据处理能力,不仅最大程度地实现了光信号的自动检测,而且简化了信号检测硬件系统的设计,提升了系统的功能。 The optical signal detection system based on Labview,which consists of signal detecting part and data analyzing part,is presented.The signal collecting part contains of photosensitive diode,amplifier(AD620),analog-to-digital converter(ADC0809),single-chip(AT89S51),level shifter(MAX232),personal computer(PC) and some other components.The detected analog signal is transformed into the digital signal,and the communication interface can transmit the digital signal from the single-chip to the computer.Then for the data analyzing part,LabVIEW in PC first gets the signal data,then it makes analysis and processing on the signal,and finally the time-dependent curve of optical signal intensity is output.Making full use of the data handling capacity of PC,not only self-detection of optical signal is realized at a maximum degree,but also the design of signal-detecting system is greatly simplified.
作者 罗养霞
出处 《半导体光电》 CAS CSCD 北大核心 2013年第3期506-509,共4页 Semiconductor Optoelectronics
基金 国家自然科学基金项目(6040712) 陕西省自然科学基础研究项目(2012JM8034) 陕西省教育厅科研计划项目(2013JK1200) 国家级大学生创新项目(201211560009)
关键词 模块化 光电二极管 信号检测 LABVIEW modularization photodiode signal detection LabView
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