CN104807782A - Position sine-wave frequency coded area array imaging light measurement system - Google Patents
Position sine-wave frequency coded area array imaging light measurement system Download PDFInfo
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- CN104807782A CN104807782A CN201510200365.3A CN201510200365A CN104807782A CN 104807782 A CN104807782 A CN 104807782A CN 201510200365 A CN201510200365 A CN 201510200365A CN 104807782 A CN104807782 A CN 104807782A
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Abstract
The invention discloses a position sine-wave frequency coded area array imaging light measurement system. All monochromatic sources in a group of monochromatic sources are linearly and uniformly arranged to form linear array light sources; all photosensitive devices in a group of photosensitive devices are uniformly and equally arranged to from linear array light source receivers; the monochromatic sources and the photosensitive devices synchronously move in the linear distribution direction perpendicular to the monochromatic sources, and output signals of the photosensitive devices are sampled after the monochromatic sources and the photosensitive devices move a preset distance; sine waves with different frequencies are adopted to respectively drive each monochromatic source in the group of the monochromatic sources; each photosensitive device in the group of the photosensitive devices is used for receiving monochromatic combinations formed after each monochromatic source penetrates through the sample; the computer is used for performing demodulation and separation on the monochromatic combinations to obtain the contribution of each monochromatic source to the monochromatic combinations, so that the imaging of the sample is realized accordingly. According to the system, high-precision measurement of high-speed and comprehensive-information area array imaging light is realized; the system has the advantages of being simple in structure and circuit, low in device and process requirements, easy to debug, high in reliability, and the like.
Description
Technical field
The present invention relates to linear array imaging light measurement system field, particularly relate to the linear array imaging light measurement system of a kind of position sine wave freuqency coding.
Background technology
By light, imaging is carried out to interior of articles in prior art, particularly imaging is carried out to inside of human body, there is the harmless outstanding advantages radiationless without wound, but not yet there is the face battle array imaging measuring system that can enter Clinical practice so far, its reason is existing, and battle array imaging measuring system precision is low, quantity of information is less, cannot meet the needs in practical application.
Summary of the invention
The invention provides the linear array imaging light measurement system of a kind of position sine wave freuqency coding, present invention achieves the high-acruracy survey of high speed, greatly the linear array imaging light of information, meet the needs in practical application, described below:
The linear array imaging light measurement system of a kind of position sine wave freuqency coding, described linear array imaging light measurement system comprises: one group of monochromatic source, one group of photosensitive device, and the computing machine external with photosensitive device, one group of monochromatic source is distributed in the one side of sample, and one group of photosensitive device is distributed in the another side of sample;
Wherein, each monochromatic source in one group of monochromatic source is linear evenly distributed, forms array light source; Each photosensitive device in one group of photosensitive device is even, equity arrangement, forms array light source receiving device;
Monochromatic source and photosensitive device synchronously move along the linear distribution direction of vertical single color light source, and often the mobile output signal of a predeterminable range to photosensitive device is sampled;
Adopt different frequency sine wave to drive each monochromatic source in one group of monochromatic source respectively, in one group of photosensitive device, each photosensitive device receives each monochromatic source and combines through the monochromatic light of sample;
Computing machine carries out to monochromatic light combination the contribution that demodulation is separated each monochromatic source obtained in monochromatic light combination, realizes the imaging to sample accordingly.
Wherein, each monochromatic source and each photosensitive device are all spaced by identical, the centre position of the corresponding photosensitive device of arranging line of monochromatic source; Photosensitive device quadrate arranges.
Described monochromatic source is laser diode, and described photosensitive device is photodiode.
Another embodiment, described monochromatic source is monochrome photodiode, and described photosensitive device is photodiode.
Another embodiment, described monochromatic source be monochromatic filter plate to monochromatic light after white light filtering, described photosensitive device is photodiode.
Another embodiment, described monochromatic source is laser diode, and described photosensitive device is photomultiplier.
Another embodiment, described monochromatic source is monochrome photodiode, and described photosensitive device is photomultiplier.
Another embodiment, described monochromatic source be monochromatic filter plate to monochromatic light 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 sine wave drive monochromatic source, the contribution that separation can obtain each monochromatic source in monochromatic light combination is carried out to the photosignal that photosensitive device detects, and then the imaging realized sample, present invention achieves the high-acruracy survey of linear array imaging light of high speed, large information, and there is structure and circuit is simple, device and technological requirement is low, debugging easily, high reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the linear array imaging light measurement system of a kind of position sine wave freuqency coding;
Fig. 2 is monochromatic source provided by the invention, sample and photosensitive device relative position schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows:
1: one group of monochromatic source; 2: sample;
3: one groups of photosensitive devices.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, described linear array imaging light measurement system comprises: one group n monochromatic source 1 (LD
1lD
n) and one group n × n photosensitive device 3 (PD
1pD
n), n>=3 and be odd number (wherein, n is odd number, then middle light source or photosensitive device can be used as center line, be convenient to aim at arrangement, the concrete value of n is relevant to the cross-sectional area of sample 2, and the embodiment of the present invention does not limit this); One group of monochromatic source 1 is distributed in the one side of sample 2, and one group of photosensitive device 3 is distributed in the another side of sample 2;
Wherein, each monochromatic source LD in one group of monochromatic source 1
1lD
nlinear evenly distributed, form array light source; Each photosensitive device PD in one group of photosensitive device 3
1pD
nevenly, equity arrangement, form array light source receiving device.This linear array imaging light measurement system also comprises the computing machine (not shown) external with one group of photosensitive device 3.
Preferred n × n photosensitive device 3 quadrate arranges, and monochromatic source 1 is all spaced by identical with photosensitive device 3, the centre position of the corresponding photosensitive device 3 of arranging line of monochromatic source 1.
Monochromatic source 1 and photosensitive device 3 can synchronously move along the linear distribution direction of vertical single color light source 1, and often the mobile output signal of a predeterminable range to photosensitive device 3 is sampled.
Adopt sinusoidal wave each the monochromatic source LD driven respectively in one group of monochromatic source 1 of different frequency
ij, each photosensitive device PD in one group of photosensitive device 3
ijreceive each monochromatic source LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each monochromatic source LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
That is, according to each just to the light intensity that the photosensitive device of monochromatic source receives, backprojection reconstruction obtains the transmission image of sample 2, and the photosensitive device of other positions obtains the information of this wavelength as auxiliary, strengthening image information.According to the organizational information in graphical analysis sample 2, determine the scattering degree information of sample tissue.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromatic source LD
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, each photodiode PD in one group of photosensitive device 3
ijreceive each laser diode LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each laser diode LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromatic source LD
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, each photodiode PD in one group of photosensitive device 3
ijreceive each monochrome photodiode LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each monochrome photodiode LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment with monochromatic filter plate to monochromatic light LD after white light filtering
1lD
n, photodiode is as photosensitive device PD
1pD
nfor example is described.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromatic source 1 to monochromatic light LD after white light filtering respectively
ij, each photodiode PD in one group of photosensitive device 3
ijreceive each monochromatic light LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each monochromatic light LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromatic source LD
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, each photomultiplier PD in one group of photosensitive device 3
ijreceive each laser diode LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each laser diode LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromatic source LD
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, each photomultiplier PD in one group of photosensitive device 3
ijreceive each monochrome photodiode LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each monochrome photodiode LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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
A linear array imaging light measurement system for position sine wave freuqency coding, see Fig. 1 and Fig. 2, this embodiment with monochromatic filter plate to monochromatic light LD after white light filtering
1lD
n, photomultiplier is as photosensitive device PD
1pD
nfor example is described.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromatic source 1 to monochromatic light LD after white light filtering respectively
ij, each photomultiplier PD in one group of photosensitive device 3
ijreceive each monochromatic light LD
ijthrough the monochromatic light combination I of sample 2
ij; Computing machine combines I to monochromatic light
ijcarry out demodulation separation and can obtain monochromatic light combination I
ijin each monochromatic light LD
ijcontribution, imaging can be carried out to sample 2 accordingly.
Computer disposal step in the present embodiment is all identical with embodiment 1, and the present embodiment does not repeat them here.
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 (8)
1. the linear array imaging light measurement system of a position sine wave freuqency coding, described linear array imaging light measurement 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, one group of monochromatic source is distributed in the one side of sample, and one group of photosensitive device is distributed in the another side of sample;
Wherein, each monochromatic source in one group of monochromatic source is linear evenly distributed, forms array light source; Each photosensitive device in one group of photosensitive device is even, equity arrangement, forms array light source receiving device;
Monochromatic source and photosensitive device synchronously move along the linear distribution direction of vertical single color light source, and often the mobile output signal of a predeterminable range to photosensitive device is sampled;
Adopt different frequency sine wave to drive each monochromatic source in one group of monochromatic source respectively, in one group of photosensitive device, each photosensitive device receives each monochromatic source and combines through the monochromatic light of sample;
Computing machine carries out to monochromatic light combination the contribution that demodulation is separated each monochromatic source obtained in monochromatic light combination, realizes the imaging to sample accordingly.
2. the linear array imaging light measurement system of a kind of position according to claim 1 sine wave freuqency coding, it is characterized in that, each monochromatic source and each photosensitive device are all spaced by identical, the centre position of the corresponding photosensitive device of arranging line of monochromatic source; Photosensitive device quadrate arranges.
3. the linear array imaging light measurement system of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromatic source is laser diode, and described photosensitive device is photodiode.
4. the linear array imaging light measurement system of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromatic source is monochrome photodiode, and described photosensitive device is photodiode.
5. a kind of position according to claim 1 and 2 sine wave freuqency coding linear array imaging light measurement system, it is characterized in that, described monochromatic source be monochromatic filter plate to monochromatic light after white light filtering, described photosensitive device is photodiode.
6. the linear array imaging light measurement system of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromatic source is laser diode, and described photosensitive device is photomultiplier.
7. the linear array imaging light measurement system of a kind of position according to claim 1 and 2 sine wave freuqency coding, it is characterized in that, described monochromatic source is monochrome photodiode, and described photosensitive device is photomultiplier.
8. a kind of position according to claim 1 and 2 sine wave freuqency coding linear array imaging light measurement system, it is characterized in that, described monochromatic source be monochromatic filter plate to monochromatic light after white light filtering, described photosensitive device is photomultiplier.
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Application publication date: 20150729 |