CN105043995A - Position sine save frequency encoded array-type transmission light measurement system - Google Patents
Position sine save frequency encoded array-type transmission light measurement system Download PDFInfo
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- CN105043995A CN105043995A CN201510197806.9A CN201510197806A CN105043995A CN 105043995 A CN105043995 A CN 105043995A CN 201510197806 A CN201510197806 A CN 201510197806A CN 105043995 A CN105043995 A CN 105043995A
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- sine wave
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Abstract
The invention discloses a position sine save frequency encoded array-type transmission light measurement system, which includes: a group of monochromatic sources and a group of photo-sensitive components, and a computer which is externally-connected to the photo-sensitive components. Sine waves in different frequencies respectively drive the light sources in the monochromatic source group, and the photo-sensitive components in the photo-sensitive component group receive an optoelectronic signal combination that the light sources pass through a sample. By means of the computer, the optoelectronic signal combination is demodulated and separated to obtain a spectrum, wherein all the spectrums obtained by the photo-sensitive components are arranged to obtain a total spectrum. The computer analyzes the composition of the sample through the total spectrum. In the invention, by means of the total spectrum, high-precision analysis to the components in the sample is achieved. The system is simple in circuit structure, is low in requirement on components and processes, is easy to debug, is high in reliability and is less in calculation quantity.
Description
Technical field
The present invention relates to transmission light measurements system regions, particularly relate to the array transmission light measurements system of a kind of position sine wave freuqency coding.
Background technology
Adopt spectral analysis Matter Composition to be a kind of high precision, fast, not need adjuvant nonpolluting method, be thus widely used in the every field such as industry, food, environmental protection and agricultural.
Inventor is realizing finding at least there is following shortcoming and defect in prior art in process of the present invention:
Existing method adopts expensive spectrometer, not high enough to the sample analysis precision of the various ingredients of spectra overlapping, and data volume is large, and analysis time is grown and the shortcomings such as complexity.
Summary of the invention
The invention provides the array transmission light measurements system of a kind of position sine wave freuqency coding, present invention achieves the high-acruracy survey to material composition, and circuit structure is simple, meets the multiple needs in practical application, described below:
The array transmission light measurements system of a kind of position sine wave freuqency coding, described array transmission light measurements system comprises: one group of monochromatic source, one group of photosensitive device, and the computing machine external with photosensitive device, monochromatic source and photosensitive device are distributed in the both sides of sample;
Adopt the sine wave of different frequency to drive each light source in sets of monochromatic light sources respectively, realize the coding to Different Light, each photosensitive device in photosensitive device group receives each light source and combines through the photosignal of sample;
Carry out demodulation separation by described computing machine to photosignal combination and obtain spectrum, the spectrum obtained by whole photosensitive device carries out arrangement and obtains total spectrum;
Described computing machine realizes analyzing the material composition of sample by described total spectrum.
Further, the quantity of each light source in sets of monochromatic light sources is more than or equal to the material composition number in sample, and the quantity of each photosensitive device in photosensitive device group is more than or equal to the material composition number in sample.
Further, described light source and described photosensitive device are evenly and equity arrangement.
Wherein, described light source is laser diode, and described photosensitive device is photodiode.
Another embodiment, described light source is monochrome photodiode, and described photosensitive device is photodiode.
Another embodiment, described light source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photodiode.
Another embodiment, described light source is laser diode, and described photosensitive device is photomultiplier.
Another embodiment, described light source is monochrome photodiode, and described photosensitive device is photomultiplier.
Another embodiment, described light source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photomultiplier.
The beneficial effect of technical scheme provided by the invention is: the present invention adopts different frequency to drive monochromatic source, the photosignal detected photosensitive device carries out separation and obtains spectrum, the spectral combination obtained by all photosensitive devices gets up to obtain total spectrum, high accuracy analysis can be carried out to the material composition in sample by total spectrum, the present invention has that circuit structure is simple, device and technological requirement is low, debugging easily, the advantage such as the high and calculated amount of reliability is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the array transmission light measurements system of a kind of position sine wave freuqency coding.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
Embodiment 1
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, described array transmission light measurements system comprises: one group of monochromatic source LD
1lD
n, one group of photosensitive device PD
1pD
nn>=3 and be odd number (wherein, n is odd number, then middle light source or photosensitive device can be used as center line, are convenient to aim at arrangement, wherein, the concrete value of n is relevant to the cross-sectional area of sample 2, the embodiment of the present invention does not limit this), and the computing machine (not shown) external with photosensitive device, monochromatic source LD
1lD
nwith photosensitive device PD
1pD
nbe distributed in the both sides of sample;
The sine wave of any different frequency is adopted to drive each light source LD in sets of monochromatic light sources respectively
i, each photosensitive device PD in photosensitive device group
jreceive each light source LD
ithrough the photosignal combination I of sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum obtained by whole photosensitive device carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is:
I
11，I
12，...I
1n，I
21，I
22，...I
2n，I
31，...I
n1，I
n2，...I
nn。Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, each light source LD in sets of monochromatic light sources
iquantity be more than or equal to material composition number in sample, each photosensitive device PD in photosensitive device group
jquantity be more than or equal to material composition number in sample.
Wherein, light source LD
iwith photosensitive device PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 2
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment is using laser diode as monochromatic source LD
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each laser diode LD respectively
i, photodiode receives each laser diode LD
ithrough the photosignal combination I of sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum obtained by whole photodiode carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is: I
11, I
12... I
1n, I
21, I
22... I
2n, I
31... I
n1, I
n2... I
nn.Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, laser diode LD
iquantity be more than or equal to material composition number in sample, photodiode PD
jquantity be more than or equal to material composition number in sample.
Wherein, laser diode LD
iwith photodiode PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 3
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment is using monochrome photodiode as light source LD
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each monochrome photodiode LD respectively
i, photodiode receives each monochrome photodiode LD
ithrough the photosignal combination I of sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum obtained by whole photodiode carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is: I
11, I
12... I
1n, I
21, I
22... I
2n, I
31... I
n1, I
n2... I
nn.Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, monochrome photodiode LD
iquantity be more than or equal to material composition number in sample, photodiode PD
jquantity be more than or equal to material composition number in sample.
Wherein, monochrome photodiode LD
iwith photodiode PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 4
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment using monochromatic filter plate to monochromatic light after white light filtering as light source LD
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each monochromatic filter plate to the filtered monochromatic light LD of white light respectively
i, photodiode receives the photosignal combination I of each monochromatic light through sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum obtained by whole photodiode carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is:
I
11，I
12，...I
1n，I
21，I
22，...I
2n，I
31，...I
n1，I
n2，...I
nn。Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, monochromatic filter plate is to the filtered monochromatic light LD of white light
iquantity be more than or equal to material composition number in sample, photodiode PD
jquantity be more than or equal to material composition number in sample.
Wherein, monochromatic filter plate is to the filtered monochromatic light LD of white light
iwith photodiode PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 5
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment is using laser diode as light source LD
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each laser diode LD respectively
i, photomultiplier receives each laser diode LD
ithrough the photosignal combination I of sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum be in control by whole photomultiplier transit carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is: I
11, I
12... I
1n, I
21, I
22... I
2n, I
31... I
n1, I
n2... I
nn.Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, laser diode LD
iquantity be more than or equal to material composition number in sample, photomultiplier PD
jquantity be more than or equal to material composition number in sample.
Wherein, laser diode LD
iwith photomultiplier PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 6
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment is using monochrome photodiode as light source LD
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each monochrome photodiode LD respectively
i, photomultiplier receives each monochrome photodiode LD
ithrough the photosignal combination I of sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum be in control by whole photomultiplier transit carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is: I
11, I
12... I
1n, I
21, I
22... I
2n, I
31... I
n1, I
n2... I
nn.Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, monochrome photodiode LD
iquantity be more than or equal to material composition number in sample, photomultiplier PD
jquantity be more than or equal to material composition number in sample.
Wherein, monochrome photodiode LD
iwith photomultiplier PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 7
An array transmission light measurements system for position sine wave freuqency coding, see Fig. 1, this embodiment using monochromatic filter plate to the filtered monochromatic light of white light as light source LD
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
The sine wave of any different frequency is adopted to drive each monochromatic filter plate to the filtered monochromatic light LD of white light respectively
i, photomultiplier receives the photosignal combination I of each monochromatic light through sample
j; Computing machine combines I to photosignal
jcarry out demodulation separation and can obtain spectrum I
j1, I
j2, I
j3... I
jn, the spectrum be in control by whole photomultiplier transit carries out arranging total spectrum that can obtain this array transmission light measurements system and obtain, that is:
I
11，I
12，...I
1n，I
21，I
22，...I
2n，I
31，...I
n1，I
n2，...I
nn。Computing machine can adopt existing ripe modeling method to analyze to the material composition of sample by total spectrum.
During practical application, monochromatic filter plate is to the filtered monochromatic light LD of white light
iquantity be more than or equal to material composition number in sample, photomultiplier PD
jquantity be more than or equal to material composition number in sample.
Wherein, monochromatic filter plate is to the filtered monochromatic light LD of white light
iwith photomultiplier PD
jevenly and equity arrangement, as Fig. 1, arrangement meet following relation: l
1> > l
2, l
3> > l
2, wherein l
1and l
3for the distance of array optical sensing device and sample up-and-down boundary, l
2for array light source LD
iwith photosensitive device PD
jspacing.。
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the array transmission light measurements system of a position sine wave freuqency coding, described array transmission light measurements system comprises: one group of monochromatic source, one group of photosensitive device, and the computing machine external with photosensitive device, it is characterized in that, monochromatic source and photosensitive device are distributed in the both sides of sample;
Adopt the sine wave of different frequency to drive each light source in sets of monochromatic light sources respectively, realize the coding to Different Light, each photosensitive device in photosensitive device group receives each light source and combines through the photosignal of sample;
Carry out demodulation separation by described computing machine to photosignal combination and obtain spectrum, the spectrum obtained by whole photosensitive device carries out arrangement and obtains total spectrum;
Described computing machine realizes analyzing the material composition of sample by described total spectrum.
2. the array transmission light measurements system of a kind of position according to claim 1 sine wave freuqency coding, is characterized in that,
The quantity of each light source in sets of monochromatic light sources is more than or equal to the material composition number in sample, and the quantity of each photosensitive device in photosensitive device group is more than or equal to the material composition number in sample.
3. the array transmission light measurements system of a kind of position according to claim 1 sine wave freuqency coding, is characterized in that, described light source and described photosensitive device are evenly and equity arrangement.
4. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, it is characterized in that, described light source is laser diode, and described photosensitive device is photodiode.
5. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, it is characterized in that, described light source is monochrome photodiode, and described photosensitive device is photodiode.
6. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, is characterized in that, described light source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photodiode.
7. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, it is characterized in that, described light source is laser diode, and described photosensitive device is photomultiplier.
8. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, it is characterized in that, described light source is monochrome photodiode, and described photosensitive device is photomultiplier.
9. the array transmission light measurements system of a kind of position sine wave freuqency coding according to claim 1 or 2 or 3, is characterized in that, described light source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photomultiplier.
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