CN112798554A - Paper quantitative moisture detection system based on infrared technology - Google Patents
Paper quantitative moisture detection system based on infrared technology Download PDFInfo
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- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000001143 conditioned effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
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- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
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- 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
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- 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
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
- G01N21/3559—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content in sheets, e.g. in paper
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- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
- G01N2021/8609—Optical head specially adapted
- G01N2021/8618—Optical head specially adapted with an optically integrating part, e.g. hemisphere
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- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
- G01N2021/8663—Paper, e.g. gloss, moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/065—Integrating spheres
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a paper quantitative moisture detection system based on an infrared technology.A lamp source device emits continuous infrared light, and a beam-breaking device rotates at a constant speed to cut the infrared light to generate pulse infrared light; the paper passes through the middle of the upper hemisphere and the lower hemisphere of the reflection integrating sphere, the pulse infrared light enters the reflection integrating sphere, is reflected for multiple times by the inner surface of the integrating sphere and penetrates through the paper for multiple times and then reaches the light splitting device, the light splitting device splits the pulse infrared light into multiple paths of light, and each path of light is subjected to signal conversion by a detection device with a light filter to obtain a group of effective detection signals; the infrared light is filtered by a plurality of channels at the same time and then is directly detected, so that the same point of the paper is detected at the same time, and the influence caused by the shaking of the paper is avoided; the optical filters with different wave bands are directly arranged in the detection equipment, and do not need to directly act on paper in an alternating way, so that fluctuation deviation caused by high-speed movement of the paper can be avoided, and the response time of detection is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of quantitative moisture detection of paper, in particular to a quantitative moisture detection system of paper based on an infrared technology.
Background
The infrared detection method for paper quantitative moisture detection at present adopts a halogen tungsten lamp as a light source to generate broadband direct current infrared light, a required optical filter is installed on a brand-new optical disc, more than 2 optical filters with different wave bands are usually required, a motor drives the optical filter on the brand-new optical disc to rotate at high speed, the rotating speed is 1000-3000 rpm, pulse infrared light with corresponding wave bands is alternately generated, the pulse infrared light passes through paper for many times under the action of an integrating sphere, the signal intensity is changed, a detector detects the change, and the quantitative moisture value of the paper is obtained through data processing. The method has the disadvantages that the effective data can be generated only by rotating one circle, more than 20 milliseconds is needed, the subsequent data processing is required to be filtered by rotating a plurality of circles, and the response time is very slow; because the infrared light of each wave band acts on the paper alternately, when the paper is actually used, the paper is in a high-speed motion state, and certain fluctuation exists, so that the acting points of each wave band on the paper are different and are not the same point of detection, the detection deviation is caused, and the detection accuracy is reduced; the requirement on the running stability of the motor is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a paper quantitative moisture detection system based on an infrared technology, which is characterized in that the existing infrared detection system is improved, and optical filters with different wave bands are arranged on different detection devices, so that the same point of paper is detected at the same time, the influence caused by the shaking of the paper is avoided, and the response time of detection is greatly prolonged.
The invention is realized by the following technical scheme:
this scheme provides a paper ration moisture detecting system based on infrared technique, includes: the device comprises a lamp source device, a brand-new light device, a reflection integrating sphere, a light splitting device and a detection device with a filter;
the lamp source equipment emits continuous infrared light, the completely-polished equipment and the infrared light form an included angle, and the completely-polished equipment rotates at a constant speed to cut the infrared light to generate pulse infrared light;
the reflection integrating sphere is divided into an upper hemisphere and a lower hemisphere, paper passes through the middle of the two hemispheres, pulse infrared light enters the reflection integrating sphere, is reflected for multiple times by the inner surface of the integrating sphere and penetrates through the paper for multiple times to reach the light splitting device, the light splitting device divides the pulse infrared light into multiple paths of light, and each path of light is subjected to signal conversion by a detection device with an optical filter to obtain a group of effective detection signals.
The working principle of the scheme is as follows: continuous infrared light emitted by the light source equipment penetrates through paper for multiple times through the reflection integrating sphere and is divided into multiple paths of light by the light splitting equipment, and the multiple paths of light are used for filtering each path of light at the same time and then directly detecting the light, so that the same point of the paper can be detected at the same moment, and the influence caused by the shaking of the paper is avoided; in addition, the optical filters with different wave bands can be arranged on different detection devices, effective detection signals can be generated on each detection device at the same time when the completely-shining device rotates for one period at a constant speed, the optical filters with different wave bands are directly arranged on the detection devices, the optical filters do not need to act on paper alternately, fluctuation deviation caused by high-speed movement of the paper can be avoided, and the response time of detection is greatly prolonged.
The lower hemisphere of the reflection integrating sphere is provided with an infrared light inlet, the left side and the right side of the upper hemisphere of the reflection integrating sphere are respectively provided with a detection hole, and pulse-type infrared light enters the reflection integrating sphere from the infrared light inlet, is reflected for multiple times by the inner surface of the integrating sphere, penetrates paper for multiple times and then reaches the light splitting device through the detection holes.
The further optimization scheme is that the light splitting equipment comprises a reflecting plate and a light splitting plate;
a reflecting plate is arranged outside the outlet of each detection hole to reflect the infrared light to the light splitting plate, and the light splitting plate divides the infrared light into two beams which enter the corresponding detection equipment with the optical filter.
The included angle between the reflecting plate and the horizontal line is 60-65 degrees.
The further optimization scheme is that an included angle between the light splitting plate and infrared light is 45 degrees. An included angle of 45 degrees between the light splitting plate and the infrared light divides the infrared light into two beams, one beam is along the direction of the original infrared light beam, and the other beam is perpendicular to the original infrared light beam.
The optical disc drive device further comprises a brand-new optical disc and a drive motor, wherein the brand-new optical disc is arranged on a drive motor shaft, and the drive motor drives the brand-new optical disc to rotate at a constant speed.
Because each wave band detects the same point of paper at the same moment, the influence of the rotational stability of the driving motor is greatly reduced, a common motor can be adopted, the use of a high-precision motor is avoided, and the cost is reduced.
The further optimization scheme is that the brand-new optical disc is a circular disc, a motor shaft penetrates through the circle center of the circular disc to be installed, and three fan-shaped infrared light channels with equal circumferential angles are uniformly cut along the circumference of the circular disc.
The further optimization scheme is that the circumferential angle of the fan-shaped infrared light channel is larger than the circumferential angle of the lighting part of the disc.
The further optimization scheme is that when three fan-shaped infrared light channels with equal circumferential angles are uniformly cut along the circumference of the disc, a connecting and fixing part is reserved along the center of the circle.
The infrared light path is cut by the brand-new optical disk, and the brand-new portion of the disk and the sector infrared light path are repeatedly blocked and passed through by infrared light to produce pulse type flash.
The further optimized scheme is that the lamp source equipment adopts a halogen bulb, and 5V direct-current voltage is applied to a filament. The light source adopts a halogen bulb, 5V direct current voltage is added to a filament to generate light with high intensity and wide spectral range, and the light is practically used with 1.2-2.5 micron mid-infrared light.
In a further preferred embodiment, the detection apparatus with the optical filter includes: the device comprises an optical filter, a detector and a signal conditioner;
after infrared light enters the detection equipment and is filtered by the optical filter, an infrared light signal is converted into an electric signal by the detector, and then the signal is conditioned by the signal conditioner to obtain an effective detection signal.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the paper quantitative moisture detection system based on the infrared technology, provided by the invention, the light splitting equipment divides infrared light which passes through paper for many times into multiple paths of light, and the infrared light is filtered by a plurality of channels at the same time and then is directly detected, so that the same point of the paper is detected at the same time, and the influence caused by the shaking of the paper is avoided; and the optical filters with different wave bands are arranged on different detection equipment, each detection equipment can simultaneously generate effective detection signals when the completely-shining equipment rotates at a constant speed for one period, and the optical filters with different wave bands are directly arranged on the detection equipment and do not need to alternately act on paper, so that fluctuation deviation caused by high-speed movement of the paper can be avoided, and the response time of detection is greatly prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a quantitative moisture detection system for paper based on infrared technology;
FIG. 2 is a diagram illustrating a structure of a compact disc.
In the drawings:
1-light source device, 21-brand optical disc, 22-driving motor, 31-reflection integrating sphere lower hemisphere, 310-infrared light inlet, 32-reflection integrating sphere upper hemisphere, 320-detection hole, 4-paper, 51-reflection plate, 52-light splitting plate, 6-detection device and 61-detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
At present, a halogen tungsten lamp is used as a light source for detecting the quantitative moisture of paper, a broadband direct current infrared light is generated, a required optical filter is arranged on a brand-new optical disc, a motor drives the optical filter on the brand-new optical disc to rotate at a high speed, the rotating speed is 1000-3000 rpm, pulse infrared light with corresponding wave bands is alternately generated, the pulse infrared light passes through the paper for many times under the action of an integrating sphere, the signal intensity is changed, a detector detects the change, and the quantitative moisture value of the paper is obtained through data processing. The method needs to rotate for one circle to generate effective data, needs more than 20 milliseconds, and takes the consideration that the subsequent data processing needs to be filtered by rotating for multiple circles, so that the response time is very slow; because the infrared light of each wave band acts on the paper alternately, when the paper is actually used, the paper is in a high-speed motion state, and certain fluctuation exists, so that the acting points of each wave band on the paper are different and are not the same point for detection, the detection deviation occurs, and the detection precision is reduced; the requirement on the running stability of the motor is high.
The following examples design a paper quantitative moisture detection system based on infrared technology according to the scheme provided by the invention.
Example 1
As shown in fig. 1, a paper quantitative moisture detection system based on infrared technology includes: the device comprises a lamp source device, a brand-new light device, a reflection integrating sphere, a light splitting device and a detection device with a filter; the lamp source equipment emits continuous infrared light, the completely-lighting equipment and the infrared light form an included angle, and the completely-lighting equipment rotates at a constant speed to cut an infrared light path to generate pulse infrared light; the reflection integrating sphere is divided into an upper hemisphere and a lower hemisphere, paper passes through the middle of the two hemispheres, pulse infrared light enters the reflection integrating sphere, is reflected for multiple times by the inner surface of the integrating sphere and penetrates through the paper for multiple times to reach the light splitting device, the light splitting device divides the pulse infrared light into multiple paths of light, and each path of light is subjected to signal conversion by a detection device with a light filter to obtain a group of effective detection signals.
The lower hemisphere of the reflection integrating sphere is provided with an infrared light inlet, the left side and the right side of the upper hemisphere of the reflection integrating sphere are respectively provided with a detection hole, and pulse-type infrared light enters the reflection integrating sphere from the infrared light inlet, is reflected for multiple times by the inner surface of the integrating sphere, penetrates paper for multiple times and then reaches the light splitting device through the detection holes. The light splitting device comprises a reflecting plate and a light splitting plate; and a reflecting plate is arranged outside each detection hole outlet to reflect the infrared light to the light splitting plate, and the light splitting plate divides the infrared light into two beams to enter the corresponding detection equipment with the optical filter. The included angle between the light splitting plate and the infrared light is 45 degrees.
The brand-new optical equipment comprises a brand-new optical disk and a driving motor, wherein the brand-new optical disk is arranged on a driving motor shaft, and the driving motor drives the brand-new optical disk to rotate at a uniform speed.
The detection apparatus with the optical filter includes: the device comprises an optical filter, a detector and a signal conditioner; after infrared light enters the detection equipment and is filtered by the optical filter, the infrared light signal is converted into an electric signal by the detector, and the electric signal is processed by the signal conditioner to obtain an effective detection signal
The light source device 1 adopts a halogen bulb, 5V direct current voltage is added to a filament to generate light with high intensity and wide spectral range, and 1.2-2.5 micron mid-infrared light is actually used. The brand-new optical disc 21 is installed on the shaft of the driving motor 22, the direct current driving motor 22 drives the brand-new optical disc 21 to rotate at a high speed of 3000 rpm, the brand-new optical disc 21 cuts an infrared light path, infrared light is repeatedly blocked and passed through, pulse type light is generated, the pulse type light enters the integrating sphere from the infrared light inlet 310 at the top end of the lower hemisphere 31 of the reflection integrating sphere, alternating current infrared light spots are formed on the paper 4, and the pulse type light passes through two detection holes 320 of the upper hemisphere 32 of the reflection integrating sphere after being reflected for multiple times by the inner surface of the reflection integrating sphere. The inner surface of the integrating sphere is specially processed to efficiently reflect infrared light, the paper 4 passes through the middle of the two hemispheres, and the infrared light reaches the detection hole 320 after penetrating through the paper 4 for multiple times. The infrared light passing through the two detection holes 320 passes through the reflecting plate 51 and the light splitting plate 52 of the light splitting device, and then is divided into 4 paths of light, each path of light enters the corresponding detection device 6, and is filtered by the optical filter, the optical filters with different wave bands are arranged on the detectors 61, the detectors 61 convert infrared light signals into electric signals, and the electric signals are conditioned by the signal conditioner 62 to obtain effective detection signals.
As shown in fig. 2, the optical disc 21 is a circular disc, the motor shaft passes through the center 210 of the circular disc, and three fan-shaped infrared light channels 211 with equal circumferential angles are uniformly cut along the circumference of the circular disc. The circumferential angle of the fan-shaped infrared light channel 211 is larger than that of the circular disc lighting part 212; when three fan-shaped infrared light channels 211 with equal circumferential angles are cut uniformly along the circumference of the disc, a connection fixing part 213 is reserved along the center of the circle.
As can be known from the structure of the optical disc 21, each time the driving motor 22 rotates one turn, 3 effective signals are generated, one turn takes 20 msec, and one effective data time is 6.7 msec, so that the response time is greatly improved, the rotating speed of the driving motor 22 is increased, and the response time can be further improved. The paths of the infrared light of the 4 channels passing through the paper are completely consistent, and the signals are detected at the same time, so that the same point of the paper is detected at the same time, and the influence caused by the shaking of the paper is avoided. 4 passageways detect simultaneously and handle, and driving motor rotation stability influences greatly reduced can adopt ordinary motor, avoids using high-precision motor, reduce cost.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a paper ration moisture detecting system based on infrared technique which characterized in that includes: the device comprises a lamp source device, a brand-new light device, a reflection integrating sphere, a light splitting device and a detection device with a filter;
the lamp source equipment emits continuous infrared light, the completely-polished equipment and the infrared light form an included angle, and the completely-polished equipment rotates at a constant speed to cut an infrared light path to generate pulse infrared light;
the reflection integrating sphere is divided into an upper hemisphere and a lower hemisphere, paper passes through the middle of the two hemispheres, pulse infrared light enters the reflection integrating sphere, is reflected for multiple times by the inner surface of the integrating sphere and penetrates through the paper for multiple times to reach the light splitting device, the light splitting device divides the pulse infrared light into multiple paths of light, and each path of light is subjected to signal conversion by a detection device with an optical filter to obtain a group of effective detection signals.
2. The infrared-technology-based paper quantitative moisture detection system as claimed in claim 1, wherein the lower hemisphere of the reflection integrating sphere is provided with an infrared light inlet, the left side and the right side of the upper hemisphere of the reflection integrating sphere are respectively provided with a detection hole, and pulse-type infrared light enters the reflection integrating sphere from the infrared light inlet, is reflected for multiple times by the inner surface of the integrating sphere, penetrates through paper for multiple times, and then reaches the light splitting device through the detection holes.
3. The infrared technology-based quantitative moisture detection system for paper sheets as claimed in claim 2, wherein the light splitting device comprises a reflection plate and a light splitting plate;
a reflecting plate is arranged outside the outlet of each detection hole to reflect the infrared light to the light splitting plate, and the light splitting plate divides the infrared light into two beams which enter the corresponding detection equipment with the optical filter.
4. The infrared-technology-based quantitative water content detection system for paper sheets as claimed in claim 3, wherein the angle between the light-splitting plate and the infrared light is 45 °.
5. The infrared-technology-based paper quantitative moisture detection system as claimed in claim 1, wherein the optical device includes a brand-new optical disc and a driving motor, the brand-new optical disc is mounted on a shaft of the driving motor, and the driving motor drives the brand-new optical disc to rotate at a constant speed.
6. The infrared-technology-based paper quantitative moisture detection system as claimed in claim 5, wherein the optical disc is a circular disc, and the motor shaft is installed through the center of the circular disc, and three fan-shaped infrared light channels with equal circumferential angles are cut uniformly along the circumference of the circular disc.
7. The infrared-technology-based quantitative moisture detection system for paper sheets as claimed in claim 6, wherein the circumference angle of the fan-shaped infrared light channel is larger than the circumference angle of the lighting portion of the circular disk.
8. The infrared-technology-based quantitative paper moisture detection system as claimed in claim 6, wherein when three fan-shaped infrared light channels with equal circumferential angles are cut uniformly along the circumference of the disc, a connection fixing part is reserved along the center of the circle.
9. The infrared technology-based paper quantitative moisture detection system as claimed in claim 1, wherein the lamp source device is a halogen bulb, and 5V dc voltage is applied to a filament.
10. The infrared technology-based quantitative moisture detection system for paper sheets as claimed in claim 1, wherein the detection device with the optical filter comprises: the device comprises an optical filter, a detector and a signal conditioner;
after infrared light enters the detection equipment and is filtered by the optical filter, an infrared light signal is converted into an electric signal by the detector, and then the electric signal is conditioned by the signal conditioner to obtain an effective detection signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011563572.2A CN112798554A (en) | 2020-12-25 | 2020-12-25 | Paper quantitative moisture detection system based on infrared technology |
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| CN202011563572.2A CN112798554A (en) | 2020-12-25 | 2020-12-25 | Paper quantitative moisture detection system based on infrared technology |
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Citations (8)
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| GB1013171A (en) * | 1961-10-09 | 1965-12-15 | Gen Electric | Method and apparatus for continuously indicating the amount of a substance in a basematerial |
| US4052615A (en) * | 1976-07-30 | 1977-10-04 | Industrial Nucleonics Corporation | Spherical cavity method and apparatus for measuring a sheet material property using infrared radiation |
| JPH07301598A (en) * | 1993-10-07 | 1995-11-14 | Masato Mamiya | Optical sensor probe |
| CN1397795A (en) * | 2002-08-16 | 2003-02-19 | 苏州苏大维格数码光学有限公司 | Method and instrument for detecting infrared ascending conversion material |
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| CN102182657A (en) * | 2011-04-21 | 2011-09-14 | 东南大学 | Light-heat-sound converting method and device with adjustable frequency and solar power generating unit |
| CN202877728U (en) * | 2012-09-14 | 2013-04-17 | 武汉市凯瑞迪激光技术有限公司 | Laser drilling device for thin materials |
| CN205080051U (en) * | 2015-10-07 | 2016-03-09 | 朱泽策 | Can be applied to transient state spectrum appearance and time -resolved image device's photointerrupter |
-
2020
- 2020-12-25 CN CN202011563572.2A patent/CN112798554A/en active Pending
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|---|---|---|---|---|
| GB1013171A (en) * | 1961-10-09 | 1965-12-15 | Gen Electric | Method and apparatus for continuously indicating the amount of a substance in a basematerial |
| US4052615A (en) * | 1976-07-30 | 1977-10-04 | Industrial Nucleonics Corporation | Spherical cavity method and apparatus for measuring a sheet material property using infrared radiation |
| JPH07301598A (en) * | 1993-10-07 | 1995-11-14 | Masato Mamiya | Optical sensor probe |
| CN1397795A (en) * | 2002-08-16 | 2003-02-19 | 苏州苏大维格数码光学有限公司 | Method and instrument for detecting infrared ascending conversion material |
| JP2004361147A (en) * | 2003-06-02 | 2004-12-24 | Tdk Corp | Water content measuring instrument |
| CN102182657A (en) * | 2011-04-21 | 2011-09-14 | 东南大学 | Light-heat-sound converting method and device with adjustable frequency and solar power generating unit |
| CN202877728U (en) * | 2012-09-14 | 2013-04-17 | 武汉市凯瑞迪激光技术有限公司 | Laser drilling device for thin materials |
| CN205080051U (en) * | 2015-10-07 | 2016-03-09 | 朱泽策 | Can be applied to transient state spectrum appearance and time -resolved image device's photointerrupter |
Non-Patent Citations (1)
| Title |
|---|
| 叶炜等: "测量高定量纸张水分的红外光学系统", 激光与红外, pages 230 - 231 * |
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