CN203455275U - Near-infrared optical fiber type moisture measuring device - Google Patents
Near-infrared optical fiber type moisture measuring device Download PDFInfo
- Publication number
- CN203455275U CN203455275U CN201320502813.1U CN201320502813U CN203455275U CN 203455275 U CN203455275 U CN 203455275U CN 201320502813 U CN201320502813 U CN 201320502813U CN 203455275 U CN203455275 U CN 203455275U
- Authority
- CN
- China
- Prior art keywords
- light
- optical fiber
- optical
- light path
- fiber
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a near-infrared optical fiber type moisture measuring device which is applied to the field of moisture content measurement and comprises a light source, a detection light path, a partial wave light path and a light power meter, wherein a 1*2 optical switch is arranged between the light source and the detection light path; a 2*1 optical switch is arranged between the partial wave light path and the light power meter; the partial wave light path comprises a light filtering device, a transmitting optical fiber for leading the transmitted light of the light filtering device to a first incidence channel of the 2*1 switch, and a reflection optical fiber for leading the reflected light of the light filtering device to a second incidence channel of the 2*1 switch; the detection light path comprises a detection probe, an incidence optical fiber communicated with a first output channel of the 1*2 optical switch and the detection probe, and a diffuse reflection optical fiber for leading the diffuse reflected light of the detection probe to the light filtering device; a second output channel of the 1*2 optical switch is provided with a reference optical fiber communicated with the light filtering device. According to the device, by adopting the optical fiber as the transfer path and medium of light in the device, the light path design of the device is simplified, and the stability is improved while the failure rate is reduced.
Description
Technical field
The utility model, for moisture fields of measurement, particularly relates to a kind of near-infrared fibre-optical formula device for measuring moisture.
Background technology
The measurement mechanism of moisture fields of measurement application is varied, and wherein near-infrared detection apparatus is easy to use with it, and the feature of not destroying object is widely used at grain, agricultural product, building materials, chemical industry, papermaking, pharmaceutical field.The principle that near infrared moisture detects is: near infrared refers to that spectrum is positioned at the light of 780～2500nm wave band, there are absorption in part inorganics, organic functional group to the light of this wave band, and we just can utilize this absorption to detect existence and the ratio of these functional groups.Hydrone is when receiving the near infrared light of some wave band, because there being the existence of hydroxyl, can absorb its certain luminous energy, making hydrone produce two kinds of typical wave bands of vibration is 1940nm and 1420nm, difference along with the product moisture of measuring, how much also different these light waves that are irradiated on product are absorbed, and its residual reflection wave, by the calculating of instrument internal, can draw the water cut of product.
Near infrared moisture pick-up unit light path design of the prior art is complicated, uses inconvenience.And the control that the modulation wheel that mostly adopts modulating motor to drive to be equipped with optical filter detects optical wavelength selects, this makes whole plant failure rate high, and noise is larger.
Utility model content
For addressing the above problem, the utility model provides a kind of near-infrared fibre-optical formula device for measuring moisture of simplifying light path design, reducing failure rate.
The utility model solves the technical scheme that its technical matters adopts: a kind of near-infrared fibre-optical formula device for measuring moisture, comprise light source, detect light path, partial wave light path and light power meter, between light source and detection light path, be provided with 1 * 2 photoswitch, between partial wave light path and light power meter, be provided with 2 * 1 photoswitches, partial wave light path comprises filtering apparatus, the transmitted light of filtering apparatus is caused to the transmission optical fiber of 2 * 1 photoswitch the first incident passages and the mirror based fiber optica that the reflected light of filtering apparatus is caused to 2 * 1 photoswitch the second incident passages, detect light path and comprise detection probe, be communicated with the first output channel of 1 * 2 photoswitch and the incident optical of detection probe, and the diffuse reflection optical fiber that diffusing of detection probe is caused to filtering apparatus, the second output channel of 1 * 2 photoswitch is provided with the reference optical fiber being communicated with filtering apparatus.
Be further used as the improvement of technical solutions of the utility model, also comprise fiber coupler, fiber coupler is communicated with filtering apparatus after diffuse reflection optical fiber and reference optical fiber are polymerized to coupled fiber.
Be further used as the improvement of technical solutions of the utility model, filtering apparatus comprises sleeve pipe, be located at the optical filter in sleeve pipe and be located in sleeve pipe and be positioned at the condenser lens of optical filter both sides, the front end of sleeve pipe is provided with the front contact pin that holds coupled fiber and mirror based fiber optica in the outside of condenser lens, the rear end of sleeve pipe is provided with the rear contact pin that holds transmission optical fiber in the outside of condenser lens.
Be further used as the improvement of technical solutions of the utility model, light source is SLED light source.
Be further used as the improvement of technical solutions of the utility model, the exit end at incident optical in detection probe is provided with plus lens.
The beneficial effects of the utility model: in this near-infrared fibre-optical formula device for measuring moisture, by adopt optical fiber as light special delivery path and the medium in device, the light path design of simplification device, has improved stability.Meanwhile, the utility model, the modulating motor replacing in traditional structure that is used in conjunction with of 2 * 1 photoswitches designs, in the time of simplification device structure, reduces noise and failure rate by mirror based fiber optica, transmission optical fiber and 1 * 2 photoswitch of filtering apparatus.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the utility model embodiment;
Fig. 2 is the utility model embodiment filtering apparatus structural representation.
Embodiment
With reference to Fig. 1, Fig. 2, the utility model provides a kind of near-infrared fibre-optical formula device for measuring moisture, comprise light source 1, detect light path 2, partial wave light path 3 and light power meter 4, light source 1 and 2 of light paths of detection are provided with 1 * 2 photoswitch 5, 4 of partial wave light path 2 and light power meters are provided with 2 * 1 photoswitches 6, partial wave light path 3 comprises filtering apparatus 31, the transmitted light of filtering apparatus 31 is caused to the transmission optical fiber 32 of 2 * 1 photoswitch 6 first incident passages and the mirror based fiber optica 33 that the reflected light of filtering apparatus 31 is caused to 2 * 1 photoswitch 6 second incident passages, detect light path 2 and comprise detection probe 21, be communicated with the first output channel of 1 * 2 photoswitch 5 and the incident optical 22 of detection probe 21, and the diffuse reflection optical fiber 23 that diffusing of detection probe 21 is caused to filtering apparatus 31, the second output channel of 1 * 2 photoswitch 5 is provided with the reference optical fiber 24 being communicated with filtering apparatus 31.
Concrete principle of work is as follows: adjust 1 * 2 photoswitch 5, the light beam that light source 1 is sent conducts to the second output channel, light beam conducts to filtering apparatus 31 through reference optical fiber 24, light beam is divided into transmitted light beam and folded light beam under the effect of filtering apparatus 31, and by transmission optical fiber 32 and mirror based fiber optica 33, conduct to 2 * 1 photoswitches 6 respectively, control 2 * 1 photoswitches 6 successively by the first incident passage and the second incident passage respectively with light power meter 4 conductings, and recording optical power value Rt and Rr respectively, adjust again 1 * 2 photoswitch 5, the light beam that light source 1 is sent conducts to the first output channel, light beam conducts to detection probe 21 through incident optical 22, light beam sends and is irradiated to object to be detected 7 from detection probe 21, in light beam, subband is absorbed by object to be detected 7, unabsorbed subband is returned detection probe 21 through object to be detected 7 surface diffuse reflectances, and conduct to filtering apparatus 31 by diffuse reflection optical fiber 23, light beam is divided into transmitted light beam and folded light beam under the effect of filtering apparatus 31, and by transmission optical fiber 32 and mirror based fiber optica 33, conduct to 2 * 1 photoswitches 6 respectively, control 2 * 1 photoswitches 6 successively by the first incident passage and the second incident passage respectively with light power meter 4 conductings, and difference recording optical power value Tt and Tr, so far testing process completes, the percentage composition of object to be detected 7 interior water can calculate with reference to following formula:
H
2O % = ( Tt / Tr ) × ( Rt / Rr )
In this near-infrared fibre-optical formula device for measuring moisture, by adopt optical fiber as light special delivery path and the medium in device, the light path design of simplification device, has improved stability.Meanwhile, the utility model designs by the modulating motor replacing in traditional structure that is used in conjunction with of mirror based fiber optica 33, transmission optical fiber 32 and 1 * 2 photoswitch 5,2 * 1 photoswitches 6 of filtering apparatus 31, in the time of simplification device structure, reduces noise and failure rate.
As the utility model preferred embodiment, also comprise fiber coupler 8, fiber coupler 8 is communicated with filtering apparatus 31 after diffuse reflection optical fiber 23 and reference optical fiber 24 are polymerized to coupled fiber 81.
By fiber coupler 8, diffuse reflection optical fiber 23 and reference optical fiber 24 are polymerized to a coupled fiber 81, then conduct to filtering apparatus 31, reach and simplify filtering apparatus 31 structure objects.
As the utility model preferred embodiment, filtering apparatus 31 comprises sleeve pipe 311, be located at the optical filter 312 in sleeve pipe 311 and be located in sleeve pipe 311 and be positioned at the condenser lens 313 of optical filter 312 both sides, the front end of sleeve pipe 311 is provided with the front contact pin 314 that holds coupled fiber 81 and mirror based fiber optica 33 in the outside of condenser lens 313, the rear end of sleeve pipe 311 is provided with the rear contact pin 315 that holds transmission optical fiber 32 in the outside of condenser lens 313.
The effect of condenser lens 313 by spreading out of in optical fiber, optical filter 312 reflections and through the light beam of optical filter 312 transmissions, converge as directional light, reduce light loss.The principle of work of filtering apparatus 31 is as follows: the light beam line focus lens 313 that send in coupled fiber 81, converge for directional light and after being irradiated on optical filter 312, in light beam, easily by hydroxyl in hydrone, wave band that absorb, that wavelength is 1370～1450nm passes optical filter 312, line focus lens 313 enter transmitted light fibre 32 after converging again, the wave band easily being absorbed by hydroxyl in hydrone in light beam is entered mirror based fiber optica 33 by optical filter 312 reflections, then coordinate the use of light power meter 4, measure the optical power value of each wave band.The utility model realizes by this filtering apparatus 31 separation that tablet filter 312 reflection and transmissions complete light beam different-waveband, and structure is simpler, for the miniaturization of installing provides basis.
As the utility model preferred embodiment, light source 1 is SLED light source.
The utility model adopts SLED light source to replace the bulb source in conventional apparatus, the spectral signature based on SLED light source, and it can provide higher spectral concentration for detecting optical band, thereby reduces detection time, improves detection accuracy; And the feature based on SLED light source can also reach falls the effect that can subtract consumption.
As the utility model preferred embodiment, in detection probe 21, the exit end at incident optical 22 is provided with plus lens 9.
In order further to improve the optical power density of tested measuring point, the exit end of incident optical 22 installs a plus lens 9 additional, with the directional light collimating, projects on object to be detected 7.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (5)
1. a near-infrared fibre-optical formula device for measuring moisture, it is characterized in that: comprise light source, detect light path, partial wave light path and light power meter, between described light source and detection light path, be provided with 1 * 2 photoswitch, between described partial wave light path and light power meter, be provided with 2 * 1 photoswitches, described partial wave light path comprises filtering apparatus, the transmitted light of described filtering apparatus is caused to the transmission optical fiber of 2 * 1 photoswitch the first incident passages and the mirror based fiber optica that the reflected light of described filtering apparatus is caused to 2 * 1 photoswitch the second incident passages, described detection light path comprises detection probe, be communicated with the first output channel of described 1 * 2 photoswitch and the incident optical of detection probe, and the diffuse reflection optical fiber that diffusing of described detection probe is caused to described filtering apparatus, the second output channel of described 1 * 2 photoswitch is provided with the reference optical fiber being communicated with described filtering apparatus.
2. near-infrared fibre-optical formula device for measuring moisture according to claim 1, is characterized in that: also comprise fiber coupler, described fiber coupler is communicated with filtering apparatus after described diffuse reflection optical fiber and reference optical fiber are polymerized to coupled fiber.
3. near-infrared fibre-optical formula device for measuring moisture according to claim 2, it is characterized in that: described filtering apparatus comprises sleeve pipe, be located at the optical filter in described sleeve pipe and be located in sleeve pipe and be positioned at the condenser lens of described optical filter both sides, the front end of described sleeve pipe is provided with the front contact pin that holds described coupled fiber and mirror based fiber optica in the outside of condenser lens, the rear end of described sleeve pipe is provided with the rear contact pin that holds described transmission optical fiber in the outside of condenser lens.
4. according to the near-infrared fibre-optical formula device for measuring moisture described in claim 1,2 or 3, it is characterized in that: described light source is SLED light source.
5. according to the near-infrared fibre-optical formula device for measuring moisture described in claim 1,2 or 3, it is characterized in that: the exit end at incident optical in described detection probe is provided with plus lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320502813.1U CN203455275U (en) | 2013-08-16 | 2013-08-16 | Near-infrared optical fiber type moisture measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320502813.1U CN203455275U (en) | 2013-08-16 | 2013-08-16 | Near-infrared optical fiber type moisture measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455275U true CN203455275U (en) | 2014-02-26 |
Family
ID=50135141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320502813.1U Expired - Lifetime CN203455275U (en) | 2013-08-16 | 2013-08-16 | Near-infrared optical fiber type moisture measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203455275U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165853A (en) * | 2014-08-29 | 2014-11-26 | 烟台东润仪表有限公司 | Spectroscopy water environment online measuring device |
| CN104374732A (en) * | 2014-11-24 | 2015-02-25 | 中国农业科学院农业信息研究所 | System for monitoring physiological water in crop leaves |
| CN104931454A (en) * | 2015-06-23 | 2015-09-23 | 浙江理工大学 | Method for rapidly determining Lycra fiber content of textiles using near infrared spectroscopic analysis |
| CN111366553A (en) * | 2018-12-26 | 2020-07-03 | 中国石油天然气股份有限公司 | Water content measuring sensor and water content measuring method |
| CN112198124A (en) * | 2019-11-15 | 2021-01-08 | 北京微芯区块链与边缘计算研究院 | Optical probe of optical fiber type full spectrum water quality sensor |
-
2013
- 2013-08-16 CN CN201320502813.1U patent/CN203455275U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165853A (en) * | 2014-08-29 | 2014-11-26 | 烟台东润仪表有限公司 | Spectroscopy water environment online measuring device |
| CN104374732A (en) * | 2014-11-24 | 2015-02-25 | 中国农业科学院农业信息研究所 | System for monitoring physiological water in crop leaves |
| CN104931454A (en) * | 2015-06-23 | 2015-09-23 | 浙江理工大学 | Method for rapidly determining Lycra fiber content of textiles using near infrared spectroscopic analysis |
| CN111366553A (en) * | 2018-12-26 | 2020-07-03 | 中国石油天然气股份有限公司 | Water content measuring sensor and water content measuring method |
| CN112198124A (en) * | 2019-11-15 | 2021-01-08 | 北京微芯区块链与边缘计算研究院 | Optical probe of optical fiber type full spectrum water quality sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203455275U (en) | Near-infrared optical fiber type moisture measuring device | |
| CN101470075B (en) | Gas concentration measuring apparatus | |
| CN101726468B (en) | Nox analyzer | |
| CN202230024U (en) | Fluorescence enhancement type optical fiber fluorescent probe | |
| WO2008151159A3 (en) | Through-container optical evaluation system | |
| CN103674891B (en) | Atmospheric NO3 free radical concentration measurement system based on double-cavity type cavity ring-down technology | |
| CN202305367U (en) | Backscattering device for measuring high-concentration nanoparticles | |
| CN201740730U (en) | Detecting device in water quality monitor by ultraviolet absorbing method | |
| CN104792737A (en) | High-precision high-accuracy turbidity measurement device and method | |
| CN102262061A (en) | Method and device for detecting concentration of chlorine dioxide gas on line | |
| CN102798602A (en) | Integrated dual-beam water quality COD on-line detection sensor | |
| CN102735633A (en) | Light path online calibration type cavity enhanced atmosphere trace gas detection system | |
| CN204495716U (en) | A kind of turbidity meter of high precision high accuracy | |
| CN101354350A (en) | Light interference type methane analyzer | |
| CN206420773U (en) | A kind of portable formaldehyde examination device based on fluorescence probe method | |
| CN202794024U (en) | Sample cell used for measuring molecular spectral absorption | |
| CN102141438B (en) | Detection head of spectrophotometer | |
| CN203310744U (en) | Liquid core waveguide food detector | |
| CN105092516A (en) | Digital light processing technology-based portable liquid food near infrared spectroscopy analyzer | |
| CN201335808Y (en) | Double-wavelength optical detection device | |
| CN202886283U (en) | Triple-waveband optical transmittance measuring instrument | |
| CN201251546Y (en) | Optical interference type methane measuring device | |
| CN102478498A (en) | Super-long cuvette system for color comparator | |
| CN104614363A (en) | Raman spectrum testing system based on liquid core waveguide | |
| CN103743723B (en) | A kind of high sensitivity bioluminescence detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 523275 Guangdong Province, Dongguan City Gaobu town high Long Xi Lu Yu Fang Technology Park building two No. 203 Patentee after: RUNOPTICS CO.,LTD. Address before: 510760 Guangzhou economic and Technological Development Zone, Guangdong, East Road, the main road, building No. 12, building 3, building 39 Patentee before: RUNOPTICS Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220110 Address after: 523287 Room 203, building 1, No. 3, Xisha Gaoke Road, Gaopo Town, Dongguan City, Guangdong Province Patentee after: Dongguan honghuiguanglian Communication Technology Co.,Ltd. Address before: 523275 No. 203, second floor, Yufang Science Park, Gaolong West Road, Gaopo Town, Dongguan City, Guangdong Province Patentee before: RUNOPTICS CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |