公开(公告)号：US20210349030A1

公开(公告)日：2021-11-11

申请号：US17277895

申请日：2019-10-17

申请人： RENISHAW PLC

发明人： Brian John Edward SMITH

IPC分类号： G01N21/65

摘要： A method of smoothing spectral data recorded by a spectrometer including successively fitting a plurality of spline curves to the spectral data, each spline curve having a different number of knots. A knot position of each knot, other than end point knots, in each spline curve is determined based upon a measure of fit of points of a previously fitted one of the spline curves having fewer knots to the spectral data. The method further includes selecting one of the spline curves as a smoothed data curve of the spectral data based upon a model selection criterion.

公开(公告)号：US20140046630A1

公开(公告)日：2014-02-13

申请号：US14056580

申请日：2013-10-17

申请人： RENISHAW PLC

发明人： Brian John Edward SMITH

IPC分类号： G01J3/44

CPC分类号： G01J3/4406 ,  G01J3/28 ,  G01J3/44

摘要： A method of estimating background radiation in spectral data. The method may comprise, iteratively, fitting an analytical curve, such as a spline curve, to reference data, determining an allowable deviation of the reference data from the analytical curve and clipping data points of the reference data or the spectral data that are more than the allowable deviation above the analytical curve to provide the reference data for the next iteration until termination criterion is met. The reference data is initially based upon the spectral data. The method may comprise generating estimates of background radiation of the spectral data, each estimate based upon fitting a different order polynomial to the spectral data, and selecting an order of polynomial to use for estimating background radiation and/or one of the estimates of the background radiation. The method may further comprise estimating the noise in the spectral data from the reference data.

摘要翻译： 估计光谱数据背景辐射的方法。 该方法可以包括迭代地将诸如样条曲线的分析曲线拟合到参考数据，确定参考数据与分析曲线的容许偏差，以及削减参考数据或频谱数据的数据点 允许偏差高于分析曲线，以提供下一次迭代的参考数据，直到满足终止标准。 参考数据最初是基于光谱数据。 该方法可以包括生成频谱数​​据的背景辐射的估计，每个估计基于将不同的有序多项式拟合到光谱数据，以及选择用于估计背景辐射的多项式的顺序和/或背景的估计之一 辐射。 该方法还可以包括从参考数据估计光谱数据中的噪声。

公开(公告)号：US20220252516A1

公开(公告)日：2022-08-11

申请号：US17630599

申请日：2020-09-01

申请人： RENISHAW PLC

发明人： Brian John Edward SMITH ,  Ian Mac BELL

IPC分类号： G01N21/65

摘要： A method of determining components present in a sample from spectral data obtained from the sample including resolving each of a plurality of models of the spectral data, the plurality of models including models having a different number of component reference spectra selected from a set of predetermined component reference spectra; selecting a one of the plurality of models based upon a model selection criterion and determining one or more components present in the sample based upon the selected model. The model selection criterion includes a measure for each model, which balances improvements in fit quality of the model to the spectral data against a complexity penalty determined from the number of component reference spectrum used in the model.

公开(公告)号：US20170227467A1

公开(公告)日：2017-08-10

申请号：US15501167

申请日：2015-08-26

申请人： RENISHAW PLC

发明人： Brian John Edward SMITH ,  Ian Mac BELL ,  Ian Paul HAYWARD

IPC分类号： G01N21/65 ,  G01N21/31

CPC分类号： G01N21/65 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0291 ,  G01J3/18 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/44 ,  G01J2003/1828 ,  G01J2003/2813 ,  G01N21/31

摘要： Spectroscopy including a source generating light profile on the sample. The light profile is movable relative to the sample. An optical input for receiving light from sample interaction with light from the source, a detector including two-dimensional array of photodetector elements, a dispersive device between the optical input and detector to spectrally disperse light from the optical input in spectral direction across the detector, an optical splitter in optical path between the optical input and detector to split light based upon wavenumber so, for a spectrum generated by a point on the sample, the spectrum first and second portions are dispersed across photodetector elements of different array row/column. Controller shifting data between photodetector elements in spatial direction, perpendicular to spectral direction, synchronously with relative movement between light profile and sample so data is accumulated on the spectrum first and second portions across different sets of photodetector elements during relative movement.