CN103308165A - Subsection integral matching method-based method for obtaining full-wave band balanced spectrum - Google Patents
Subsection integral matching method-based method for obtaining full-wave band balanced spectrum Download PDFInfo
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- CN103308165A CN103308165A CN 201310211827 CN201310211827A CN103308165A CN 103308165 A CN103308165 A CN 103308165A CN 201310211827 CN201310211827 CN 201310211827 CN 201310211827 A CN201310211827 A CN 201310211827A CN 103308165 A CN103308165 A CN 103308165A
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Abstract
The invention discloses a subsection integral matching method-based method for obtaining a full-wave band balanced spectrum. The method comprises the following steps of: pre-scanning, i.e. setting a fixed integral time to scan the light source characteristics within the whole measurement range; partitioning, i.e. dividing corresponding measurement intervals according to the distribution characteristics of a reference light source; confirming the integral time of each interval, i.e. dividing an interval by a region where the intensity change rate is approximate relatively, and matching the optimized integral time according to each regional characteristic; carrying out sectional type measurement, i.e. carrying out sectional type measurement after the integral time of each region is confirmed, and respectively carrying out according to the integral time of each region; and matching an all-region spectrum, measuring all region data, and combining each region data, thereby obtaining a full-wave band measurement result. After the method disclosed by the invention is used, the problem of inconsistent signal quality caused by different waveband measurement results in the conventional measurement method can be overcome.
Description
Technical field
The present invention relates to a kind of method that full spectral balanced is measured curve that obtains, particularly a kind of method based on the balanced spectrum of subsection integral matching method acquisition all band belongs to spectrometer precision measurement field.
Background technology
Traditional spectrometer is when measuring, at slit width, under the condition that external conditions such as the intensity of light source is fixing are fixed, take integral time or the whole spectral coverages of the disposable collection of sweep velocity fixed, the principle that integral time or sweep velocity are chosen is with in whole measurement ranges, measured signal maximum, be no more than the maximal value of apparatus measures scope, because employed reference light source can not be a radiation that waits energy, the radiation that is different-waveband has strong and weak variation, so just cause measurement result to change in the different spectral coverage power with the reference intensity of light source, it is the strong relatively position of reference light source, signal quality is all right, on the contrary the weak position of reference signal, and signal results is just poor.So obtain full wave balanced measurement result, just must adjust integral time or the sweep velocity of each section at the characteristics of reference light source, to go to mate respectively optimized integral time.
Summary of the invention
The invention discloses and a kind ofly obtain the method for balanced measurement result based on the subsection integral matching method, thereby in all band of measuring, obtain balanced measurement result.
The technical scheme that addresses the above problem is:
Based on the method for the balanced spectrum of subsection integral matching method acquisition all band,
Comprise the steps:
Prescan is set a light source feature that scans whole measurement ranges fixing integral time;
Subregion according to reference distribution of light sources feature, is divided between corresponding measurement zone;
Determine respectively to distinguish integral time, divide an interval with the zone that change rate of strength approaches relatively, mate optimized integral time according to each provincial characteristics;
Areal survey, just determining after integral time in good each district can areal survey, according to carrying out respectively each regional integral time;
Whole district's Spectral matching after measuring the All Ranges data, after each area data combined, can obtain full wave measurement result.
The invention has the advantages that the present invention obtains the method that all band is measured equilibrium result based on the subsection integral matching method in the spectral measurement, has overcome the inconsistent problem of different-waveband measurement signals quality in the traditional measurement method.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is reference light source characteristics figure;
Fig. 2 is that the reference light source is exported figure as a result after the subregion adjustment;
Fig. 3 is test flow chart;
Fig. 4 is for pressing difference subregion measurement result figure integral time.
Embodiment
In order to deepen the understanding of the present invention, the invention will be further described below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the present invention, does not constitute the restriction to protection domain of the present invention.
Shown in Fig. 1-4, the invention discloses and a kind ofly obtain the method for balanced measurement result based on the subsection integral matching method, thereby in all band of measuring, obtain balanced measurement result.
When using spectrometer measurement, this method is according to using light source and signal characteristic, as signal intensity and absorption characteristic etc., needs are measured initial scope be divided into different measured zone, each interval employing the optimization integral time that matches, make signal quality (as intensity etc.) reach ideal range (as the 90%-95% of AD maximum count value).Owing to be that segmentation is carried out, in identical section, reference test of light source and sample test are to use the integral time of identical optimization coupling during measurement, so measurement result (as I sample/I light source) can not change, namely the test result spectral pattern is constant.After all sectional area outcome measurements finish, can obtain measuring the full wave balanced curve of measuring.
The present invention is achieved by the following technical solutions:
Be equivalent to the time of the lasting reception signal of sensor integral time in measurement, integral time is more long, signal intensity increases more greatly, so we can go to mate the reference signal characteristics by adjusting integral time, adjusts dynamic range and improves the dry purpose that compares etc. of letter thereby reach.Can be that unit directly dynamically arranges with ms as a basic parameter integral time in fiber spectrometer, by the directly control of programming, realizes control automatically in whole measurement ranges.For the monochromatic ceremony spectrometer of scan-type, can be by changing sweep velocity, the dead time that namely changes the every step-length in the different wavelength range arranges, and passes through programming Control.
Fig. 3 is the test frame process flow diagram, and details are as follows:
Prescan: purpose is to find full spectrum reference distribution of light sources feature, for subregion provides foundation; By setting a light source feature (as Fig. 1) that scans whole measurement ranges fixing integral time.
Subregion reaches to be determined respectively to distinguish integral time: according to reference distribution of light sources feature, divide between corresponding measurement zone, divide an interval with the zone that change rate of strength approaches relatively, mate optimized integral time according to each provincial characteristics.
Areal survey: just can areal survey after the integral time of determining good each district, according to carrying out respectively the integral time of each section.
Whole district's Spectral matching: after measuring the All Ranges data, after each area data combined, can obtain full wave measurement result.
To sum up, the present invention takes to obtain the method that all band is measured equilibrium result based on the subsection integral matching method in the spectral measurement, has overcome the inconsistent problem of different-waveband measurement signals quality in the traditional measurement method.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. obtain the method for the balanced spectrum of all band based on the subsection integral matching method, it is characterized in that:
Comprise the steps:
Prescan is set a light source feature that scans whole measurement ranges fixing integral time;
Subregion according to reference distribution of light sources feature, is divided between corresponding measurement zone;
Determine respectively to distinguish integral time, divide an interval with the zone that change rate of strength approaches relatively, mate optimized integral time according to each provincial characteristics;
Areal survey, just determining after integral time in good each district can areal survey, according to carrying out respectively each regional integral time;
Whole district's Spectral matching after measuring the All Ranges data, after each area data combined, can obtain full wave measurement result.
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| CN201310211827.2A CN103308165B (en) | 2013-05-29 | 2013-05-29 | The method of the balanced spectrum of all band is obtained based on subsection integral matching method |
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| CN103308165A true CN103308165A (en) | 2013-09-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486673A (en) * | 2016-01-27 | 2016-04-13 | 北京师范大学 | Chlorophyll fluorescence automation monitoring system |
| CN105548122A (en) * | 2016-01-27 | 2016-05-04 | 北京师范大学 | Chlorophyll fluorescent time-shared monitoring system |
| CN113588080A (en) * | 2021-08-11 | 2021-11-02 | 长春希达电子技术有限公司 | Calibration method of light source spectrum |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449282C (en) * | 2005-03-23 | 2009-01-07 | 江苏大学 | Method and device for separating noise signal from infrared spectrum signal by independent vector analysis |
| CN101598598A (en) * | 2009-06-15 | 2009-12-09 | 中兴通讯股份有限公司 | A kind of optical spectrum instrumentation and measuring method thereof |
| DE102009030468A1 (en) * | 2009-06-23 | 2011-01-05 | Carl Zeiss Microlmaging Gmbh | Device for optical spectroscopy and mechanical switch for such a device |
| CN201476956U (en) * | 2009-09-08 | 2010-05-19 | 上海光谱仪器有限公司 | All-wave band CCD detector performance evaluation device |
| CN102998296B (en) * | 2012-11-28 | 2014-10-29 | 中国科学院重庆绿色智能技术研究院 | Raman spectra pretreatment method for removing effects of background noises |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486673A (en) * | 2016-01-27 | 2016-04-13 | 北京师范大学 | Chlorophyll fluorescence automation monitoring system |
| CN105548122A (en) * | 2016-01-27 | 2016-05-04 | 北京师范大学 | Chlorophyll fluorescent time-shared monitoring system |
| CN105486673B (en) * | 2016-01-27 | 2020-03-10 | 北京师范大学 | Chlorophyll fluorescence automatic monitoring system |
| CN105548122B (en) * | 2016-01-27 | 2020-04-17 | 北京师范大学 | Chlorophyll fluorescence time-sharing monitoring system |
| CN113588080A (en) * | 2021-08-11 | 2021-11-02 | 长春希达电子技术有限公司 | Calibration method of light source spectrum |
| CN113588080B (en) * | 2021-08-11 | 2024-04-02 | 长春希达电子技术有限公司 | Calibration method for light source spectrum |
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