CN104807757A - Imaging light measurement system of area array emitted light position sine wave frequency coding - Google Patents
Imaging light measurement system of area array emitted light position sine wave frequency coding Download PDFInfo
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- CN104807757A CN104807757A CN201510200422.8A CN201510200422A CN104807757A CN 104807757 A CN104807757 A CN 104807757A CN 201510200422 A CN201510200422 A CN 201510200422A CN 104807757 A CN104807757 A CN 104807757A
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Abstract
The invention discloses an imaging light measurement system of area array emitted light position sine wave frequency coding. The imaging light measurement system comprises a group of n*n monochromatic sources, a photosensor and a computer, wherein the group of n*n monochromatic sources is uniformly distributed on one side of a sample; the photosensor is placed on the opposite side, corresponding to the center of the monochromatic sources, of the one side of the sample; sine waves with different frequencies are adopted to drive all monochromatic sources in the group; the monochromatic sources and the photosensor synchronously scan in two directions; the computer acquires a photoelectric signal when the photosensor moves by a preset distance each time; the computer demodulates and separates the photoelectric signals to obtain the contribution made by each monochromatic source to the photosensor so as to perform high-precision image reconstruction on the sample. According to the invention, high-precision measurement of high-speed comprehensive-information imaging light is realized, and the advantages of simple structure and circuit, low device and technology requirements, high easiness in debugging, and high reliability are realized.
Description
Technical field
The imaging measuring system field that the present invention relates to, particularly relates to the imaging measuring system that optical position sine wave freuqency coding is penetrated in a kind of paroxysm.
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 that existing 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 imaging measuring system that optical position sine wave freuqency coding is penetrated in a kind of paroxysm, present invention achieves the high-acruracy survey of high speed, the greatly imaging of information, meet the needs in practical application, described below:
The imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm, described imaging measuring system comprises: one group of n × n monochromatic source, photosensitive device, and the computing machine external with photosensitive device, uniformly distribute in the side of sample one group of n × n monochromatic source, and the center position of the corresponding monochromatic source of offside places photosensitive device;
Adopt sinusoidal wave each monochromatic source driven respectively in one group of monochromatic source of different frequency, monochromatic source and photosensitive device synchronously carry out the scanning of both direction, often move the photosignal that predeterminable range computer acquisition photosensitive device detects;
Computing machine carries out demodulation separation to photosignal and obtains the contribution of each monochromatic source to photosensitive device, carries out high precision image reconstruction accordingly to sample.
Wherein, described monochromatic source is that square is uniformly distributed.
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 the monochromatic light obtained 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 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 sine wave drive monochromatic source, the photosignal detected photosensitive device carries out being separated and can obtain the contribution of each monochromatic source to photosensitive device, carries out high precision image reconstruction accordingly to sample.Present invention achieves the high-acruracy survey of imaging 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 that the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm;
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
An imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, and see Fig. 1 and Fig. 2, described imaging measuring system comprises: one group n × n monochromatic source 1 (LD
1lD
n) and a photosensitive device 3 (PD), 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, wherein, 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).Namely uniformly distribute in the side of sample n × n monochromatic source of one group of preset wavelength, and the center position of the corresponding monochromatic source of offside places photosensitive device PD.
Wherein, preferred monochromatic source LD
1lD
nbe uniformly distributed in square; This imaging measuring system also comprises the computing machine (not shown) external with photosensitive device 3.
Adopt sinusoidal wave each the monochromatic source LD driven respectively in one group of monochromatic source 1 of different frequency
ij, monochromatic source LD
ijthe scanning of both direction synchronously can be carried out with photosensitive device PD, photosensitive device PD often moves the photosignal I that predeterminable range computer acquisition photosensitive device PD detects, computing machine carries out demodulation separation to photosignal I can obtain each monochromatic source LD
ijto the contribution I of this photosensitive device
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
That is, according to each just to the light intensity that the photosensitive device 3 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
An imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, and see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromatic source LD
1lD
n, photodiode is that example is described as photosensitive device PD.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, laser diode LD
ijsynchronously can carry out the scanning of both direction with photodiode PD, often move the photosignal I that predeterminable range computer acquisition photodiode PD detects, computing machine carries out demodulation separation to photosignal I can obtain each laser diode LD
ijto the contribution I of this photodiode PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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 imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, and see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromatic source LD
1lD
n, photodiode is that example is described as photosensitive device PD.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, monochrome photodiode LD
ijsynchronously can carry out the scanning of both direction with photodiode PD, often move the photosignal I that predeterminable range computer acquisition photodiode PD detects, computing machine carries out demodulation separation to photosignal I can obtain each monochrome photodiode LD
ijto the contribution I of this photodiode PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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 imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, see Fig. 1 and Fig. 2, this embodiment with monochromatic filter plate to the monochromatic light LD obtained after white light filtering
1lD
n, photodiode is that example is described as photosensitive device PD.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromatic source 1 to the monochromatic light LD obtained after white light filtering respectively
ij, monochromatic light LD
ijsynchronously can carry out the scanning of both direction with photodiode PD, often move the photosignal I that predeterminable range computer acquisition photodiode PD detects, computing machine carries out demodulation separation to photosignal I can obtain each monochromatic light LD
ijto the contribution I of this photodiode PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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 imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, and see Fig. 1 and Fig. 2, this embodiment is using laser diode as monochromatic source LD
1lD
n, photomultiplier is that example is described as photosensitive device PD.
Adopt sinusoidal wave each laser diode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, laser diode LD
ijsynchronously can carry out the scanning of both direction with photomultiplier PD, often move the photosignal I that predeterminable range computer acquisition photomultiplier PD detects, computing machine carries out demodulation separation to photosignal I can obtain each laser diode LD
ijto the contribution I of this photomultiplier PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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 imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, and see Fig. 1 and Fig. 2, this embodiment is using monochrome photodiode as monochromatic source LD
1lD
n, photomultiplier is that example is described as photosensitive device PD.
Adopt sinusoidal wave each monochrome photodiode LD driven respectively in one group of monochromatic source 1 of different frequency
ij, monochrome photodiode LD
ijsynchronously can carry out the scanning of both direction with photomultiplier PD, often move the photosignal I that predeterminable range computer acquisition photomultiplier PD detects, computing machine carries out demodulation separation to photosignal I can obtain each monochrome photodiode LD
ijto the contribution I of this photomultiplier PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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 imaging measuring system for optical position sine wave freuqency coding is penetrated in paroxysm, see Fig. 1 and Fig. 2, this embodiment with monochromatic filter plate to the monochromatic light LD obtained after white light filtering
1lD
n, photomultiplier is that example is described as photosensitive device PD.
Different frequency sine wave is adopted to drive each monochromatic filter plate in one group of monochromatic source 1 to the monochromatic light LD obtained after white light filtering respectively
ij, monochromatic light LD
ijsynchronously can carry out the scanning of both direction with photomultiplier PD, often move the photosignal I that predeterminable range computer acquisition photomultiplier PD detects, computing machine carries out demodulation separation to photosignal I can obtain each monochromatic light LD
ijto the contribution I of this photomultiplier PD
ij, high precision image reconstruction can be carried out to sample 2 accordingly.
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. an imaging measuring system for optical position sine wave freuqency coding is penetrated in face paroxysm, and described imaging measuring system comprises: one group of n × n monochromatic source, photosensitive device, and the computing machine external with photosensitive device, is characterized in that,
Uniformly distribute in the side of sample one group of n × n monochromatic source, and the center position of the corresponding monochromatic source of offside places photosensitive device;
Adopt sinusoidal wave each monochromatic source driven respectively in one group of monochromatic source of different frequency, monochromatic source and photosensitive device synchronously carry out the scanning of both direction, often move the photosignal that predeterminable range computer acquisition photosensitive device detects;
Computing machine carries out demodulation separation to photosignal and obtains the contribution of each monochromatic source to photosensitive device, carries out high precision image reconstruction accordingly to sample.
2. the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm according to claim 1, and it is characterized in that, described monochromatic source is that square is uniformly distributed.
3. the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm according to claim 1, and it is characterized in that, described monochromatic source is laser diode, and described photosensitive device is photodiode.
4. the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm according to claim 1 and 2, and it is characterized in that, described monochromatic source is monochrome photodiode, and described photosensitive device is photodiode.
5. a kind of paroxysm according to claim 1 and 2 penetrate optical position sine wave freuqency coding imaging measuring system, it is characterized in that, described monochromatic source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photodiode.
6. the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm according to claim 1 and 2, and it is characterized in that, described monochromatic source is laser diode, and described photosensitive device is photomultiplier.
7. the imaging measuring system of optical position sine wave freuqency coding is penetrated in a kind of paroxysm according to claim 1 and 2, and it is characterized in that, described monochromatic source is monochrome photodiode, and described photosensitive device is photomultiplier.
8. a kind of paroxysm according to claim 1 and 2 penetrate optical position sine wave freuqency coding imaging measuring system, it is characterized in that, described monochromatic source be monochromatic filter plate to the monochromatic light obtained after white light filtering, described photosensitive device is photomultiplier.
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