【作者】 岳红轩；

【导师】 潘建根； 王万良；

【作者基本信息】 浙江工业大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 随着科技的飞速发展,推动光谱分析技术在物理化学理论研究、工农业生产、国防、交通、照明等领域学科得到了极广泛的应用。而传统光谱分析系统由于体积大、扫描速度慢等缺陷,应用于大批量产品检测等方面不现实,极大地限制了其应用。高精度快速光谱分析系统的研究成为该系统发展的重要趋势之一。本课题设计了一款基于USB2.0接口技术,采用平面衍射光栅作为分光元件,可控恒温线阵SSPD作为探测器,可以实现高精度快速测量的光谱分析系统。本系统设计定位在主要测试较强光,因此对灵敏度要求相应较低。文中首先分析了光谱仪发展的动态,并给出了本课题研究的实际意义。然后紧密结合CIE相关文件介绍了采用分光法实现光谱分析的原理,并对SSPD探测器进行了分析,介绍了分光系统,给出了采用滤色片轮转配合软件滤波滤除杂散光和噪声影响的设计方法。接着详细介绍了系统的硬件和软件组成及其实现,并根据系统快速和高精度测量的要求给出了自适应照度积分方法。实际光谱测量中可以选择快速测量和高精度测量,满足不同的需要。最后,介绍了波长校正和光谱定标的方法;并且采用数值分析法等,对分光法测量LED颜色不确定度作了仿真和实际结果对比分析,验证本系统的各项指标。结果表明,该系统具有良好的线性和可重复测量性,颜色测量不确定度在0.001左右,满足高精度测量要求。更多还原

【Abstract】 With the development of techniques, the technique of Spectrum analysis has been widely used in many fields, such as research of physical chemistry basics, industrial and agriculture production, national defense, traffic and illumination. Traditional spectrometer’s cubic content is large and the scanning speed is slow, so it cannot satisfy the need of current development such as measuring typical products in mass production. The High Accuracy Array Spectrometer is a trend of the spectrometer.This paper designs a High Accuracy Array Spectrometer which is based on USB2.0 interface. This spectrometer which achieves the measuring fast with high accuracy uses plane grating as spectro-grating and linear array SSPD whose operating temperature can be controlled as detection element.Firstly, this paper analyzes retrospect of the development of spectrometer and the research meanings. It introduces the Spectroradiometric method which is based on the related paper of CIE and dispersion system, analyzes the SSPD, and designs a method to remove stray light and noise by controlling the optical filter and software algorithm.Then, the hardware and software are introduced detailedly. This dissertation proposes a new method to get the integration time automatically and fast with high accuracy. To enough the different needs, in measuring, there are two methods, fast measuring and high accuracy measuring, to select.At last, the calibration of spectrum and respone is introduced, and the measurement uncertainties in the color measurement of LEDs by spectroradiometric method are emulated. The results measured by this system are with high accuracy by contrasting with the emulation. This system, which is 0.001 in color uncertainty, is very good in linearity and repeatability.更多还原