CN101477723A - Optical spectrum signal detection method, system and device - Google Patents
Optical spectrum signal detection method, system and device Download PDFInfo
- Publication number
- CN101477723A CN101477723A CNA2008101419233A CN200810141923A CN101477723A CN 101477723 A CN101477723 A CN 101477723A CN A2008101419233 A CNA2008101419233 A CN A2008101419233A CN 200810141923 A CN200810141923 A CN 200810141923A CN 101477723 A CN101477723 A CN 101477723A
- Authority
- CN
- China
- Prior art keywords
- signal
- spectrum
- spectral
- phase
- conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to the technical field of photoelectric detection, and provides a method, a system and equipment for detecting a spectrum signal. The system comprises a to-be-detected material which is irradiated to produce the spectrum signal, and further includes a fundamental frequency laser light source, a spectrum separating unit, a spectrum phase locking detection unit, and a digital signal processing and output unit, wherein, the fundamental frequency laser light source produces highly stable lasers which pass through the to-be-detected material and enable the material to produce the spectrum signal; as the spectrum separating unit presses the fundamental frequency lasers, an effective spectrum signal can be obtained; the spectrum phase locking detection unit detects the effective spectrum signal by the coherence accumulation phase locking integral technology and converts an optical signal to an electrical signal; and the digital signal processing and output unit converts the electrical signal to a digital signal and outputs the digital signal. The invention further provides a method and equipment for detecting the spectrum signal. The method, the system and the equipment for detecting the spectrum signal can be adopted for improving the performance of spectrum signal detection.
Description
Technical field
The present invention relates to survey field of photoelectric technology, more particularly, relate to a kind of optical spectrum signal detection method, system and equipment.
Background technology
Development along with laser technology, laser technology is applied on the discerning the false from the genuine of banknote, certificate or bill more and more, for example, at the below 10X10mm rectangle region of front " people " printed words of the 5th cover Renminbi, can realize real and fake discrimination by the machine-readable signal of laser detection spectrum.
The method that prior art is differentiated the certain material on banknote, certificate or the bill mainly contains: adopt the machine-readable signal cash inspecting machine of portable spectrum, it is to utilize the machine-readable signaling zone of laser radiation spectrum to inspire fluorescence to utilize the subjective identification of human eye mostly, therefore, do not reach the degree of objective automatic detection.And, when this kind equipment is not protected when laser emission, the user's that may burn eyes and skin.But the machine-readable signal cash inspecting machine of spectrum that also has active detecting in addition.
Prior art is utilized spectral signal to detect and distinguished that the true and false key step of material can reduce: (1) adopts modulated laser light source irradiation measured material, produces spectral signal; (2) separate with the grating pair spectral signal by two-way prism, obtain effective spectral signal; (3) adopt conventional detector that effective spectral signal is surveyed, detect effective spectral signal, then be converted to simulating signal output or human eye and identify.Because prior art adopts the modulated laser light source, the light source of its generation is stable inadequately, and the efficiency ratio of two-way prism and grating selection light is lower, and, the detectivity of The common detector is not high, and the realization degree that simulating signal output or employing human eye identify is low, thereby causes the spectral signal detection performance of prior art lower.
Be confined to the performance of prior art, the laser detector outside need of discerning the false from the genuine has shadow shield to cover box to shield extraneous light and disturb, need in actual use banknote, certificate or bill are prevented in shadow shield, the operation more complicated, the speed of influence check, and constituent components is many, and power consumption is big, and volume is big.
Therefore need a kind of new optical spectrum signal detection method, system and equipment, can improve the performance that spectral signal detects.
Summary of the invention
One of purpose of the present invention is to provide a kind of optical spectrum signal detection method, system and equipment, is intended to solve the lower problem of prior art performance.
In order to realize goal of the invention, described system comprises the measured material of its irradiation with the generation spectral signal, also comprises basic frequency laser light source, spectral separation unit, the phase-locked probe unit of spectrum and digital signal processing and output unit;
Described basic frequency laser light source produces the high stable laser radiation to described measured material, inspires spectral signal;
Compacting basic frequency laser in described spectral separation unit obtains effective spectral signal;
The phase-locked probe unit of described spectrum adopts the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal;
Described digital signal processing and output unit are digital signal and output with electrical signal conversion.
Preferably, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
In order better to realize said method comprising the steps of goal of the invention:
A. basic frequency laser light source irradiation measured material produces spectral signal;
B. compacting basic frequency laser in spectral separation unit obtains effective spectral signal;
C. the phase-locked probe unit of spectrum adopts the phase-locked Integral Technology of coherent accumulation to survey effective spectral signal, and light signal is converted to electric signal;
D. electric signal is carried out digital signal processing and output.
Preferably, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
In order to realize that better goal of the invention, described equipment are used for the spectral signal that the irradiation measured material produces is detected, comprise basic frequency laser light source, spectral separator, the phase-locked detector of spectrum and digital signal processing and output circuit;
Described basic frequency laser light source produces the high stable laser radiation to described measured material, inspires spectral signal;
Described spectral separator compacting basic frequency laser obtains effective spectral signal;
The phase-locked detector of described spectrum adopts the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal;
Described digital signal processing and output circuit are digital signal and output with electrical signal conversion.
Preferably, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
As from the foregoing, the present invention is in the process that spectral signal detects, difference with the prior art has been to adopt the basic frequency laser light source that can produce the high stable LASER Light Source, make the spectral signal of generation more stable, and spectral separator is when selecting effective spectral signal, minimum to useful signal decay, to the invalid signals decay greatly, it is higher therefore to select efficient; In addition, in the process that spectral signal detects, difference with the prior art is to adopt the phase-locked detector detecting light spectrum of spectrum signal, because the phase-locked detector of spectrum exceeds the several number magnitude to the detectivity of feeble signal than conventional detector, therefore detectivity is strong, and the spectral signal that detects is exported digital signal by digital signal processing, can direct machine-readable identification, and can connect intelligent microprocessor, realize real objective automatic detection.Therefore, the present invention has improved the performance that spectral signal detects.
Description of drawings
Fig. 1 is the structural representation of spectral signal detection system among one of them embodiment of the present invention;
Fig. 2 is the process flow diagram of optical spectrum signal detection method among one of them embodiment of the present invention;
Fig. 3 is the schematic internal view of spectral signal checkout equipment among one of them embodiment of the present invention;
Fig. 4 is the work synoptic diagram of spectral signal checkout equipment among one of them embodiment of the present invention.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.
Embodiment
In the present invention, produce spectral signal by basic frequency laser light source irradiation measured material, effective spectral signal is selected out in the spectral separation unit, the phase-locked detector of spectrum adopts the phase-locked Integral Technology of coherent accumulation to survey effective spectral signal, and light signal is converted to electric signal, and be digital signal and output with electrical signal conversion by digital signal processing and output circuit.Like this, improved the performance that spectral signal detects.
Fig. 1 shows the spectral signal detection system in the one embodiment of the invention, and this system comprises basic frequency laser light source 100, spectral separation unit 200, the phase-locked probe unit 300 of spectrum, digital signal processing and output unit 400 and measured material 500.Wherein:
Basic frequency laser light source 100 is used to produce the high stable laser radiation to measured material 500, inspires spectral signal; Spectral separation unit 200 is used to suppress basic frequency laser, obtains effective spectral signal; The phase-locked probe unit 300 of spectrum is used to adopt the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal; It is digital signal and output that digital signal processing and output unit 400 are used for electrical signal conversion; Measured material 500 is used for it is shone the spectral signal that can be used for detecting with generation.
Measured material 500 can be the rare earth optical function material, and the rare earth optical function material is the rare earth material of going up conversion or following translation function that possesses light, also can adopt other material.For example, the measured material 500 of infrared light correspondence is a rare earth material, and the measured material 500 of ultraviolet light correspondence is common fluorescent material, is prior art about ultraviolet Technology, does not repeat them here.Be that the rare earth optical function material is described in detail principle of the present invention with measured material 500 below.
Fig. 2 shows the method flow that spectral signal detects in the one embodiment of the invention, and this method flow is based on system architecture shown in Figure 1, and detailed process is as follows:
In step S201, basic frequency laser light source 100 irradiation measured materials 500 produce spectral signal.
In step S202, spectral separation unit 200 compacting basic frequency lasers obtain effective spectral signal.
In step S203, the phase-locked probe unit 300 of spectrum adopts the phase-locked Integral Technology of coherent accumulation to survey effective spectral signal, and light signal is converted to electric signal.
In step S204, electric signal is carried out digital signal processing and output.
In one embodiment, measured material 500 is rare earth optical function materials, and it can produce conversion or conversion spectrum signal down during by laser radiation.Basic frequency laser light source 100 adopts semiconductor lasers to produce, PN junction edge emitter laser for example, and it can produce high stable laser, and for example wavelength is the laser of 980nm ± 20nm or 880nm ± 20nm, also can adopt the laser of other wavelength.Laser can shine directly on the measured material 500, also can the scioptics irradiation.In one embodiment, irradiating angle be 0.1 spend to 179.9 the degree between.
After producing spectral signal, spectral signal separates through spectral separation unit 200 together with extremely strong basic frequency laser (tens of to millions of times between intensity).Spectral separation unit 200 can adopt spectral separator to realize that the present invention adopts selectable spectral separator.Wherein, basic frequency laser is made faint effective spectral signal (promptly going up conversion or following conversion spectrum signal) see through and arrive at the light-inductive place of the phase-locked probe unit 300 of spectrum by the compacting of spectral separation unit 200 degree of depth.
In one embodiment, the phase-locked probe unit 300 of spectrum adopts the phase-locked Integral Technology of coherent accumulation, last conversion or following conversion spectrum signal are surveyed, because last conversion or following conversion spectrum signal are the rare earth optical function materials of specific correspondence, it can select out because of being amplified by phase-locked integration, if the phase-locked probe unit 300 of spectrum is surveyed specific conversion or the following conversion spectrum signal gone up less than specific rare earth optical function material correspondence, prove that then measured material 500 is false.
If detect conversion or following conversion spectrum signal, the phase-locked probe unit 300 of spectrum is converted to electric signal with this spectral signal, and it can adopt general photoelectric conversion technique to realize, is prior art about photoelectric conversion technique, does not repeat them here.Afterwards, digital signal processing and output unit 400 are digital signal and output with electrical signal conversion.In an exemplary scenario, be made as and detect corresponding spectral signal, then export high level, if detect corresponding spectral signal, then output low level.The digital signal of output can connect microprocessor, or directly connects digital demonstration or audible alarm etc.
Fig. 3 shows the spectral signal checkout equipment in the one embodiment of the invention, this equipment is used for the spectral signal that irradiation measured material 500 produces is detected, and comprises basic frequency laser light source 10, spectral separator 20, the phase-locked detector 30 of spectrum and digital signal and output circuit 40.Wherein:
Basic frequency laser light source 10 produces the high stable laser radiation to measured material 500, inspires spectral signal; Spectral separator 20 compacting basic frequency lasers obtain effective spectral signal; The phase-locked detector 30 of spectrum adopts the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal; Digital signal and output circuit 40 are digital signal and output with electrical signal conversion.
Fig. 4 is the work synoptic diagram of light spectrum detecting apparatus in one embodiment of the present of invention.In this embodiment, be that Renminbi is placed under the light spectrum detecting apparatus with measured material 500, because Renminbi has the rare earth optical function material on the specific region, it can produce conversion or time conversion spectrum signal during by laser radiation.When Renminbi was discerned the false from the genuine, basic frequency laser light source 10 produced high stable laser, and for example wavelength is the laser of 980nm ± 20nm or 880nm ± 20nm, also can adopt the laser of other wavelength, and the laser of its generation is high stable.Laser can shine directly on the Renminbi, also can the scioptics irradiation.In one embodiment, irradiating angle be 0.1 spend to 179.9 the degree between.After shining Renminbi, after reflection of Renminbi specific region or transmission, produce spectral signal.
After producing spectral signal, spectral signal separates through spectral separator 20 together with extremely strong basic frequency laser (tens of extremely intensity between millions of times), and spectral separator used in the present invention is to select the absorption base spectral separator 20 of spectral signal frequently.Wherein, basic frequency laser is made the more weak effective spectral signal of relative basic frequency laser (promptly going up conversion or following conversion spectrum signal) can see through and arrive at the light-inductive place of the phase-locked detector 30 of spectrum by the compacting of spectral separator 20 degree of depth.
Among this embodiment, the phase-locked detector 30 of spectrum adopts the phase-locked Integral Technology of coherent accumulation, last conversion or following conversion spectrum signal are surveyed, because last conversion or the corresponding specific rare earth optical function material of following conversion spectrum signal, it can select out because of being amplified by phase-locked integration, if the phase-locked detector 30 of spectrum is surveyed specific conversion or the following conversion spectrum signal gone up less than specific rare earth optical function material correspondence, then prove by Renminbi it is false.
If detect conversion or following conversion spectrum signal, the phase-locked detector 30 of spectrum is converted to electric signal with spectral signal, and it can adopt general photoelectric conversion technique to realize, is prior art about photoelectric conversion technique, does not repeat them here.Digital signal processing and output circuit 40 are digital signal and output with electrical signal conversion.In an exemplary scenario, be made as and detect corresponding upward conversion or following conversion spectrum signal, then export high level, if detect corresponding upward conversion or following conversion spectrum signal, then output low level.The digital signal of output can connect microprocessor, or directly connects digital demonstration or audible alarm etc.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of spectral signal detection system comprises the measured material of its irradiation with the generation spectral signal, it is characterized in that described system also comprises basic frequency laser light source, spectral separation unit, the phase-locked probe unit of spectrum and digital signal processing and output unit;
Described basic frequency laser light source produces the high stable laser radiation to described measured material, inspires spectral signal;
Compacting basic frequency laser in described spectral separation unit obtains effective spectral signal;
The phase-locked probe unit of described spectrum adopts the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal;
Described digital signal processing and output unit are digital signal and output with electrical signal conversion.
2, spectral signal detection system according to claim 1 is characterized in that, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
3, a kind of optical spectrum signal detection method is characterized in that, said method comprising the steps of:
A. basic frequency laser light source irradiation measured material produces spectral signal;
B. compacting basic frequency laser in spectral separation unit obtains effective spectral signal;
C. the phase-locked probe unit of spectrum adopts the phase-locked Integral Technology of coherent accumulation to survey effective spectral signal, and light signal is converted to electric signal;
D. electric signal is carried out digital signal processing and output.
4, optical spectrum signal detection method according to claim 3 is characterized in that, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
5, a kind of spectral signal checkout equipment is used for the spectral signal that the irradiation measured material produces is detected, and it is characterized in that described equipment comprises basic frequency laser light source, spectral separator, the phase-locked detector of spectrum and digital signal processing and output circuit;
Described basic frequency laser light source produces the high stable laser radiation to described measured material, inspires spectral signal;
Described spectral separator compacting basic frequency laser obtains effective spectral signal;
The phase-locked detector of described spectrum adopts the phase-locked Integral Technology of coherent accumulation that effective spectral signal is surveyed, and light signal is converted to electric signal;
Described digital signal processing and output circuit are digital signal and output with electrical signal conversion.
6, spectral signal checkout equipment according to claim 5 is characterized in that, described measured material is the rare earth optical function material, and described effective spectral signal is to go up conversion or following conversion spectrum signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101419233A CN101477723B (en) | 2008-08-16 | 2008-08-16 | Optical spectrum signal detection method, system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101419233A CN101477723B (en) | 2008-08-16 | 2008-08-16 | Optical spectrum signal detection method, system and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477723A true CN101477723A (en) | 2009-07-08 |
| CN101477723B CN101477723B (en) | 2012-12-12 |
Family
ID=40838431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101419233A Expired - Fee Related CN101477723B (en) | 2008-08-16 | 2008-08-16 | Optical spectrum signal detection method, system and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101477723B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104094323A (en) * | 2012-02-03 | 2014-10-08 | 梅伊有限公司 | Apparatus and method for characterizing items of currency |
| CN106680224A (en) * | 2016-12-29 | 2017-05-17 | 清华大学 | Measurement device and method for material oxidation ablation in high-temperature wind tunnel |
| CN110494899A (en) * | 2016-09-30 | 2019-11-22 | 瑞士Csem电子显微技术研发中心 | Luminescent security features and method and apparatus for being detected to it |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1584555A (en) * | 2004-06-01 | 2005-02-23 | 浙江大学 | Petroleum products quality rapid measuring instrument based on low-resolution Raman spectra |
| CN100510714C (en) * | 2006-12-05 | 2009-07-08 | 中国科学院安徽光学精密机械研究所 | Laser breakdown spectrographic detection method and system for metal pollutants in water body |
| CN100494989C (en) * | 2007-01-11 | 2009-06-03 | 山西大学 | Method and device for measuring weak fluorescence spectrum |
| CN101089609A (en) * | 2007-06-28 | 2007-12-19 | 中国科学院安徽光学精密机械研究所 | Multiple spectral section continuous tuning high resolution infrared laser spectral measuring system and method |
-
2008
- 2008-08-16 CN CN2008101419233A patent/CN101477723B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104094323A (en) * | 2012-02-03 | 2014-10-08 | 梅伊有限公司 | Apparatus and method for characterizing items of currency |
| CN104094323B (en) * | 2012-02-03 | 2017-11-21 | 梅伊有限公司 | For characterizing the apparatus and method of currency item |
| CN110494899A (en) * | 2016-09-30 | 2019-11-22 | 瑞士Csem电子显微技术研发中心 | Luminescent security features and method and apparatus for being detected to it |
| CN110494899B (en) * | 2016-09-30 | 2021-09-21 | 瑞士Csem电子显微技术研发中心 | Luminescent security feature and method and apparatus for detecting same |
| CN106680224A (en) * | 2016-12-29 | 2017-05-17 | 清华大学 | Measurement device and method for material oxidation ablation in high-temperature wind tunnel |
| CN106680224B (en) * | 2016-12-29 | 2019-03-22 | 清华大学 | Material oxidation ablation measuring device and its measurement method in a kind of high-temperature tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477723B (en) | 2012-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100867394B1 (en) | Improved luminescence characteristics detector | |
| CN202486267U (en) | Corona detection apparatus based on UV narrow band spectrum | |
| US20150293032A1 (en) | Unit and method for optical non-contact oil detection | |
| CN107091822A (en) | The device and its detection method of double light source activation luminescence generated by light detection semiconductor defects | |
| CN105372199B (en) | One kind being based on infrared irreflexive drunk driving telemetry system and the method for telemetering | |
| CN103234945B (en) | Aflatoxin detects and sorting unit | |
| CN107462566B (en) | Raman spectrometer for detecting specific narrow wavenumber range | |
| KR20170076687A (en) | Authentication systems, authentication devices, and methods for authenticating a value article | |
| KR101686079B1 (en) | Apparatus and method for generating depth image | |
| JP2008209128A (en) | Method and apparatus for identifying plastic | |
| CN104126187B (en) | For the system and method for the noise decrease in bar code signal | |
| CN101477723A (en) | Optical spectrum signal detection method, system and device | |
| CN202195883U (en) | High-speed ultraviolet flame detector | |
| CN107209969B (en) | Intelligent anti-counterfeiting optical system (SACOS) for detecting fraud using advanced-based spectroscopy | |
| KR900006892A (en) | Banknote Identification Method and Apparatus | |
| CN207300890U (en) | For detecting the Raman spectrometer of specific narrow wave-number range | |
| CN104822286B (en) | Coin and the method for checking coin | |
| CN204832053U (en) | Emerald appraisal appearance | |
| CN215179650U (en) | Terahertz ground detection system for detecting safety of bottom of vehicle | |
| CN108647541A (en) | A kind of bar code scan chip and scan method | |
| US8417959B2 (en) | Biometric device based on luminescence | |
| CN201259699Y (en) | Portable voice currency examining machine | |
| CN106093998B (en) | High-energy ray detects mould group and including its wearable device | |
| CN201194014Y (en) | Time resolving fluoroimmunoassay instrument | |
| CN108489923A (en) | Infrared-gas imaging focal plane based on sensitive member differential signal and imaging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20170816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |