CN109211822A - infrared reflected light measuring device - Google Patents
infrared reflected light measuring device Download PDFInfo
- Publication number
- CN109211822A CN109211822A CN201710535012.8A CN201710535012A CN109211822A CN 109211822 A CN109211822 A CN 109211822A CN 201710535012 A CN201710535012 A CN 201710535012A CN 109211822 A CN109211822 A CN 109211822A
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- Prior art keywords
- condenser
- light
- halogen bulb
- infrared
- controller
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- 229910052736 halogen Inorganic materials 0.000 claims abstract description 21
- 150000002367 halogens Chemical class 0.000 claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 12
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 6
- 235000013399 edible fruits Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010016275 Fear Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
An infrared reflected light measuring apparatus comprising: the first condenser, one side of the first condenser extends outwards to define as an outer side, and the other side of the first condenser opposite to the outer side extends outwards to define as an inner side; a halogen bulb arranged at the inner side of the first condenser; several second condenser lenses, whose size is smaller than that of the first condenser lens, and which are distributed between the inner side of the first condenser lens and the halogen bulb; an infrared lamp condenser set between the second condenser and the halogen bulb; the plurality of third condenser lens groups are arranged at the outer side positions of the other second condenser lenses; the light splitting filters are respectively positioned at the outer side positions of the third light splitting lens groups; and the photodiodes are respectively positioned at the outer side positions of the spectral filters and are closely attached to the spectral filters.
Description
Technical field
The present invention is related with infrored equipment, specifically refers to a kind of infrared reflection light measurement device.
Background technique
In recent years, there are the different features for absorbing reflection ratio using spectrum of the different individual molecules for different wave length,
Interpretation spectrum and it can be calculated with Computer aided analysis whereby and be detected certain chemical component ratio of object.
Therefore, whether pacify in the sugarinesses such as crops, fruit, food or the content of acidity assaying or even certain toxicant
Entirely, there are the various detector products using spectroscopy exploitation listing, these are all to reflect original using the absorption of infrared spectrum
Reason is to obtain close inspection numerical value.The detection of traditional fruit sugariness must destroy and take out fruit juice, the measurement of blood glucose also must needle
Human body is pierced with draw blood, but these are all intrusive mode, the injury punctured can be damaged and caused to human body to fruit
And it generates psychology and fears.Therefore, further development also has many paper inkings in medical treatment detection science and technology, such as: human body
The method of inspection of the high low non-intrusion type of blood oxygen concentration, blood glucose, although its accuracy and reliability may not arrive in clinical trial
The standard authenticated up to FDA, but the long-term monitoring that comfortable safety still can be obtained in the physical therapy of house helps, to avoid causing brokenly
Bad and pain.
400~750NM of visible wavelength is less susceptible to penetrate the epidermis of the crops such as fruit, it is also difficult to penetrate human body
Skin surface.So as shown in Figure 1, the near infrared ray NIR (750 of more long wave must be used using the Noninvasive testing of light wave
~1700NM) even short infrared SWIR (1700~2500NM), therefore the theoretically longer fruit that penetrates readily through of wavelength
Blood vessel group knowledge in pulp or under skin corium etc., therefore the non-destructive detector largely listed is all examined with this wavelength
Survey the spectral reflectance of various material molecules.In addition, as shown in Fig. 2, common different material or chemical bond have different absorption spectrums, it can
For judging ingredient.
To use light emitting diode (LED) as the non-destructive detector of infrared light sources at present, bandwidth
It is limited in several specifications, for needing equidistant wave band or wider, relatively narrow bandwidth, is just difficult to find that suitable light-emitting diodes
Pipe.
Summary of the invention
In view of this, known non-destructive detector is using light emitting diode as infrared ray to improve in prior art
For light source, bandwidth is only limited in several specifications, for needing equidistant wave band or wider, relatively narrow bandwidth, is just difficult to look for
The problems such as to suitable light emitting diode；Edge this, the present invention is providing a kind of infrared reflection light measurement device, mainly includes
Have: one first condenser, the side of first condenser, which extends outwardly, can be defined as an outside, and first condenser is opposite to each other in this
The other side in outside, which extends outwardly, can be defined as an inside；One halogen bulb is set at the inner side of first condenser；
Several second condenser lens, size are less than the size of first condenser, are distributed in inside and the halogen of first condenser
Between plain light bulb；One infrared lamp optically focused microscope group, between the second condenser lens and the halogen bulb that one of are disposed therein；Several
Three condenser groups, are set at the outer fix of remaining second condenser lens；Several light splitting optical filters, be located at this each
At the outer fix of three condenser groups；Several photodiodes is located at the outer fix of each light splitting optical filter, and
It is close to each light splitting optical filter；It uses and reaches the effect of can arbitrarily selecting multiband and bandwidth.
Detailed description of the invention
Fig. 1 is that visible light and near infrared light penetrate effect diagram.
Fig. 2 is the schematic diagram that different material or chemical bond have different absorption spectrums.
Fig. 3 is configuration schematic diagram of the invention.
Fig. 4-1~Fig. 4-5 is partial component configuration schematic diagram of the invention.
Fig. 5 is the curve graph of brightness of the present invention and wavelength.
Fig. 6 is the schematic diagram that the made photodiode of different substrate materials has different wave bands different response sensitivity.
Fig. 7 is the schematic diagram that individual device first makees return-to-zero adjustment before factory.
Fig. 8 is the schematic diagram eliminated individual device and cause otherness in manufacturing tolerance.
Description of symbols: 100- infrared reflection light measurement device；The first condenser of 10-；20- halogen bulb；30-
Two condensers；40- infrared light concentrating microscope group；50- third optically focused microscope group；60- is divided optical filter；70- photodiode；81- control
Device processed；811- power amplifier；812- analog-digital converter；813- microcontroller chip；82- display；The supply of 83- power supply
Device；91- determinand.
Specific embodiment
Fig. 3 to Fig. 8 is please referred to, is a kind of infrared reflection light measurement device provided by a preferred embodiment of the present invention
100, it mainly include one first condenser 10, a halogen bulb 20, several second condenser lens 30, an infrared lamp condenser
Group 40, several third optically focused microscope groups 50, several light splitting optical filters 60, several photodiodes 70, a controller 81, one
Display 82 and a power supply unit 83, in which:
Referring to Fig. 3, first condenser 10, the side of first condenser 10, which extends outwardly, can be defined as an outside,
The other side of first condenser 10 opposite to each other on the outside of this, which extends outwardly, can be defined as an inside.
Referring to Fig. 3, the halogen bulb 20, is set at the inner side of first condenser 10.
Referring to Fig. 3, the second condenser lens 30, size is less than the size of first condenser 10, be distributed in this
Between the inside of one condenser 10 and the halogen bulb 20.
Referring to Fig. 3, the infrared lamp optically focused microscope group 40, the second condenser lens 30 and the halogen lamp that one of are disposed therein
Between bubble 20.
Referring to Fig. 3, the third optically focused microscope group 50, is set at the outer fix of remaining second condenser lens 30.
Referring to Fig. 3, the light splitting optical filter 60, is located at the outer fix of each third optically focused microscope group 50.
Referring to Fig. 3, the photodiode 70, is located at the outer fix of each light splitting optical filter 60, and with
Each light splitting optical filter 60 is close to.
Referring to Fig. 3, the controller 81, by 811, one analog-digital converter (ADC) 812 of a power amplifier (AMP)
It is integrated with a microcontroller chip (MCU) 813.The controller 81 is simultaneously electrically connected with the photodiode 70.
Referring to Fig. 3, the display 82 is liquid crystal display, it is electrically connected with the controller 81.
Referring to Fig. 3, the power supply unit 83 is lithium battery, with the controller 81, display 82 and the halogen bulb 20
It is electrically connected, required electric power when supplying actuation.
Therefore above-mentioned is that a kind of infrared reflection light measurement device 100 provided by a preferred embodiment of the present invention is each
Its handling characteristics is then described as follows by the introduction of portion's component and its assembling mode again:
Firstly, as shown in figure 3, a determinand 91 to be placed in the outside appropriate position of first condenser 10, and make this
Halogen bulb 20 issues infrared ray, and for infrared ray toward outside transmitting simultaneously and through infrared lamp, infrared ray passes through the infrared lamp
After optically focused microscope group 40, infrared ray is pierced by after the drawing-in third optically focused microscope group 50, second condenser lens 30 and the first condenser 10 again, is enabled
It the infrared ray that is pierced by and then is irradiated on the determinand 91, keeps the determinand 91 past by diffusing after infrared radiation
Inside forms a branch of directional light via first condenser 10 collection, is redistributed on each second condenser lens 30, then via this
4th condenser 50 focuses on reflected light on photodiode 70, can reach the reflection light characteristic for differentiating different wave length.
Then, photodiode 70 is again by the Weak current excited by reception luminous energy via 811 He of power amplifier
Analog-digital converter 812 transmits voltage value and carries out numerical operation to microcontroller chip 813, then comprehensive with preparatory simulated program
The numerical result acquired, such as the component ratio of sugariness, acidity or certain chemical substance, are shown on display 82, to reach
The effect of specific function detector.
In addition, since the price of photodiode 70 is very high, the especially price of the longer InGaAs unit area of wave band
It is higher, therefore using the photodiode 70 less than 3MM, then number required for second condenser lens 30 of the invention is cooperated to be equal to
The wave band+1 needed, and the same number of 4th condenser 50 is then used to set the photoelectricity that reflected light focuses on smaller area
Meter, can improve luminous energy density as far as possible, and reduce the wattage of light bulb, reach the requirement of energy saving.
Secondly, can be adopted in the present invention with a variety of different wave band number Ps 1 as shown in Fig. 4-1~Fig. 4-5；P2；P3…+
Several second condenser lens 30 required for infrared lamp optically focused microscope group (IR) 40 projects and third condenser 50, and the third optically focused
Mirror 50 (because of locality difference therefore this not shown) is configured at the relative position of the second condenser lens 30, and is saving space, again
Under amount and cost consideration, which can be designed to round, ellipse or rectangle etc., such as the first of Fig. 4-1
Condenser 10 is circle, and the inside is equipped with 1 infrared lamp optically focused microscope group (IR), 40,2 second condenser lens 30, and wherein this is second poly-
Light microscopic 30 and third condenser 50 are in small circular；The first condenser 10 of Fig. 4-2 is circle, and the inside is equipped with 1 infrared ray
40,6 second condenser lens 30 of lamp optically focused microscope group (IR)；The first condenser 10 of Fig. 4-3 is circle, and the inside is equipped with 1 infrared ray
40,4 second condenser lens 30 of lamp optically focused microscope group (IR)；The first condenser 10 of Fig. 4-4 is ellipse, and the inside is equipped with 1 infrared
40,3 second condenser lens 30 of line lamp optically focused microscope group (IR)；First condenser 10 of 4-5 figure is rectangle, and the inside is equipped with 1
40,5 second condenser lens 30 of infrared lamp optically focused microscope group (IR).In addition each second condenser lens shown in 4-1~4-5 figure
30。
First condenser 10, second condenser lens 30 and the 4th condenser 50 after receiving and concentrating infrared reflection light,
Again through by the light splitting optical filter 60, to filter out selected several wavelength and bandwidth, such as 900+/- 30NM etc., then irradiate
On the photodiode 70 of abutting, the reflection of different wave length can be arrived such as the resolution of light splitting luminance meter or spectrometer identical function
Light characteristic.
The light source of infrared ray is other than traditional incandescent osram lamp, and there are also modern Light-emitting diode LED, respectively there is it
Advantage and disadvantage.Design of the invention uses halogen bulb (also known as quartz bulb) because such light bulb have it is very wide close red
Outside line NIR spectra, especially under the filament temperature of 3000 degree of K, the most light height of spectrum near 1000NM (as shown in Figure 5), and
And its spectrum be it is successional, can freely select several most suitable wave bands, can also freely be stipulated by the selection of optical filter
Bandwidth, these advantages are all that light emitting diode is short of, and light emitting diode is usually only limited in several specifications: such as 740,
780,850,940,1030NM, and bandwidth mostly only has +/- 30NM, if needing equidistant wave band or wider, relatively narrow in design
Bandwidth, be difficult to find the light emitting diode fit into.
The advantages of there are also other using halogen bulb, i.e., all wave bands are issued by the filament of same centrostigma,
And whether there is or not unstable disturbance, the change that each wave band can synchronize is not strong or curved weak for tube voltage, electric current, as long as grabbing therein one
A wave band is as reference value, so that it may reform the data received, be unlikely to because power supply dies down or instrument is ageing old and obtain not
Enough accurate numerical value, when using the IR LED of more different locations, the luminous point from each different directions is difficult to concentrate for this
A small area on the test object, and as the Strength Changes of service life each IR LED are also less synchronous, therefore
Detecting resulting data also can be more and more inaccurate, so the place for having its excellent using halogen bulb.
Although the energy efficiency using halogen bulb is poor, by optical design provided by the present invention, infrared ray
Source through epidermis enters inside substance and light that diffusing reflection is returned, it is necessary to via the first condenser, second poly- in the present invention
Light microscopic and the 4th optically focused microscope group and focus on the photodiode.But the PHOTODIODE that different substrate materials (SUBSTRATE) are made into
(photodiode) has different wave bands different response sensitivity (SENSITIVITY), as shown in fig. 6, SILICON (silicon
Chip) in 300~1100NM, and InGaAs (Gallium indium arsenide) is then in 800~1700NM.
Infrared ray (IR) reflected light is collected and is focused on the photodiode, then is converted into voltage number via photoelectric effect
Value, the utilization of this principle is whether in the specific absorption line of spectrometer (SPECTROMETER) analysis continuous spectrum
The infrared reflection light measurement device that (ABSORPTION LINES) or the present invention simplify.Only need to choose several specific bands with
And specific bandwidth analyzes the chemical component being directed to, basic operation method is identical.But the construction of spectrometer is complicated, price is high
It is high, and analyze wide continuous wavelength spectrogram, it is necessary to compared with huge database, and can not volume production become with hand-held
The human-oriented microminiaturization device of band, price.Therefore the present invention is combining to be designed to produce than Today, most using special Light Electrical
Product are cheap, and the more stable practical hand-held arrangement for detecting of performance, or reinforce the desktop of optical electivity wave band, or even conveying
Band sorts the IR equipment of type.But other than excellent Light Electrical framework, it is necessary to the accurate numerical analysis model of available energy
With the operation program simplified, can just be copied to volume production in miniature IC chip.The present invention also illustrates this mathematical operation mode, because
For high amount of Light Electrical spare part need to be used when volume production manufacture, even if all identical spare part of specification lot number, also has fixed model
The tolerance enclosed, if the processing of photoelectricity news will make adjustment for an other device, complexity when that volume production is high, and expends software
The built-in time, so the variable that relocatable variable and fixed ratio interlock must be made whole consideration, it is thus available
Reform related operation
The analog form of (NORMALIZED CROSS CORRELATION) achievees the purpose that homogenization.
For a more simplified example, as shown in fig. 7, in the photodiode that silicon chip is used only
(SI-PHOTODIODE) three wave bands 800 are selected；900；1000+/- 20NM, and the voltage of its photoelectric conversion is distinguished
It is Va；Vb；Vc, each device use same a piece of zero reflector plate of intensity (albronze surface sand-blasting (Cu/Al ROUGH
SURFACE), diffusing reflection is simulated) also obtain three voltage value Va0；Vb0；Vc0, because of manufacturing tolerance, every other
Voltage zero value is that slightly difference is unfixed, but is converted into voltage value in the reflected light for receiving determinand, because to certain
Chemical bond has certain absorption reflection, so Va/Va0；Vb/Vb0；Vc/Vc0, these ratios should be compared with for different devices
To be consistent, therefore it is more reliable reliable to use these ratios to be only as the variable in input program.
Come again, as shown in figure 8, being made as the sugariness BRIX% of apple to be measured (APPLE) in order to eliminate individual device
Make otherness caused by tolerance, input variable value V1=Va/Va0；V2=Vb/Vb0；V3=Vc/Vc0 this be NORMALIZE weight
Whole program.
Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand,
In the case where not departing from spirit and scope defined by claims appended below, many modifications can be made, are changed, or wait
Effect, but fall in protection scope of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710535012.8A CN109211822A (en) | 2017-07-03 | 2017-07-03 | infrared reflected light measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710535012.8A CN109211822A (en) | 2017-07-03 | 2017-07-03 | infrared reflected light measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109211822A true CN109211822A (en) | 2019-01-15 |
Family
ID=64992580
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710535012.8A Withdrawn CN109211822A (en) | 2017-07-03 | 2017-07-03 | infrared reflected light measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820118A (en) * | 2021-01-04 | 2021-05-18 | 广州含蓝科技有限公司 | Traffic and transportation supply and demand information exchange system |
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|---|---|---|---|---|
| US4500784A (en) * | 1982-09-29 | 1985-02-19 | Michael Hacskaylo | Automatic human body detector |
| JPH05288674A (en) * | 1992-04-09 | 1993-11-02 | Toshihiko Yoshikawa | Sacchari meter |
| CN1184936A (en) * | 1996-11-26 | 1998-06-17 | 松下电工株式会社 | Device for non-invasive determination of glucose concn. in blood of subject |
| CN1201905A (en) * | 1997-03-25 | 1998-12-16 | 松下电工株式会社 | Method for Determination of Glucose Concentration in Target Using Near Infrared Spectroscopy |
| CN2698097Y (en) * | 2004-05-12 | 2005-05-11 | 上海恒尚自动化设备有限公司 | On-line circle optical projection detection device for tobacco industry |
| CN1638690A (en) * | 2002-03-08 | 2005-07-13 | 三西斯医学股份有限公司 | Compact apparatus for noninvasive measurement of glucose through near-infrared spectroscopy |
| JP2007127666A (en) * | 2006-12-25 | 2007-05-24 | Matsushita Electric Works Ltd | Biological spectrum measurement device |
| CN201207037Y (en) * | 2008-05-16 | 2009-03-11 | 辽宁东信盛大科技有限公司 | Near infrared on-line detecting analyzer for coal quality |
| CN106471354A (en) * | 2014-07-08 | 2017-03-01 | 三美电机株式会社 | Biological component information measurement device |
-
2017
- 2017-07-03 CN CN201710535012.8A patent/CN109211822A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500784A (en) * | 1982-09-29 | 1985-02-19 | Michael Hacskaylo | Automatic human body detector |
| JPH05288674A (en) * | 1992-04-09 | 1993-11-02 | Toshihiko Yoshikawa | Sacchari meter |
| CN1184936A (en) * | 1996-11-26 | 1998-06-17 | 松下电工株式会社 | Device for non-invasive determination of glucose concn. in blood of subject |
| CN1201905A (en) * | 1997-03-25 | 1998-12-16 | 松下电工株式会社 | Method for Determination of Glucose Concentration in Target Using Near Infrared Spectroscopy |
| CN1638690A (en) * | 2002-03-08 | 2005-07-13 | 三西斯医学股份有限公司 | Compact apparatus for noninvasive measurement of glucose through near-infrared spectroscopy |
| CN2698097Y (en) * | 2004-05-12 | 2005-05-11 | 上海恒尚自动化设备有限公司 | On-line circle optical projection detection device for tobacco industry |
| JP2007127666A (en) * | 2006-12-25 | 2007-05-24 | Matsushita Electric Works Ltd | Biological spectrum measurement device |
| CN201207037Y (en) * | 2008-05-16 | 2009-03-11 | 辽宁东信盛大科技有限公司 | Near infrared on-line detecting analyzer for coal quality |
| CN106471354A (en) * | 2014-07-08 | 2017-03-01 | 三美电机株式会社 | Biological component information measurement device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820118A (en) * | 2021-01-04 | 2021-05-18 | 广州含蓝科技有限公司 | Traffic and transportation supply and demand information exchange system |
| CN112820118B (en) * | 2021-01-04 | 2022-06-10 | 武汉风韵出行信息科技有限公司 | Traffic and transportation supply and demand information exchange system |
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Application publication date: 20190115 |