CN200953000Y - Double-wavelength near infrared moisture determining instrument - Google Patents
Double-wavelength near infrared moisture determining instrument Download PDFInfo
- Publication number
- CN200953000Y CN200953000Y CN 200620093297 CN200620093297U CN200953000Y CN 200953000 Y CN200953000 Y CN 200953000Y CN 200620093297 CN200620093297 CN 200620093297 CN 200620093297 U CN200620093297 U CN 200620093297U CN 200953000 Y CN200953000 Y CN 200953000Y
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- near infrared
- detector
- wavelength
- moisture
- infrared moisture
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Abstract
The utility model relates to a moisture teller which is double wave and near-infrared and comprises a wavelength channel and a sample cell. The illuminant is fixed in the middle of the upper shell of the sample cell. The instrument is equipped with a rotated optical modulation panel, while two near infrared wavelength channels are respectively fixed at both sides of the illuminant. The wavelength channel has a built-in probe. This utility model adopts two moisture telling wavelength channels. So, the number of channels is limited. In this case, the moisture teller is a compact type and a single spectra channel near infrared detection system. For this system, both the spectral filter and the infrared detector chip are jointly installed. Also, the shielding gas cools at the same time, so as to greatly extend the service life of the spectral filter. Therefore, the system becomes more compact and simple. Also, the scanning spectra collection and moving components are avoided, so as to reduce the complexity of the instrument and increase the stability thereof. This utility model could be used for rapid determination on the moisture content of the foodstuff and pharmaceuticals, etc. Due to the fast detection speed, it could be used for fast industrial moisture test.
Description
Technical field:
The utility model relates to a kind of optical, mechanical and electronic integration instrument that adopts near infrared spectroscopy fast measuring substance moisture content content.
Background technology:
The method of present fast measuring substance moisture content content has a variety of, and near infrared spectroscopy is wherein a kind of quantitative analysis method comparatively rapidly and efficiently.The easy optical filter of the normal employing of the selection of this method spectrum channel, the corresponding wavelength channel of optical filter, seen that it is three wavelength channel Moisture Meter that the simplest structure is arranged, but the wavelength channel that different instrument adopted combination is different, and performance is difference to some extent also, and equipment has light wave to select rotating disk, wavelength channel also is movable, movable part is many in the instrument, and stability has much room for improvement, and structure is also complicated in addition.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned not enough problem, and a kind of dual wavelength near infrared moisture analyzer is provided, the structure compact, and stability is high, the measuring accuracy height, analysis cost is low.
The technical scheme that the utility model is adopted for achieving the above object is: dual wavelength near infrared moisture analyzer, relate to wavelength channel and sample cell, sample cell upper shell center fixed is equipped with light source, rotate on the instrument optical modulation plate is housed, two near-infrared wavelength passages are fixed in the light source both sides, and detector is housed in the wavelength channel.
Described sample cell is positioned at 45 ° of angle intersection points of two wavelength channels place.
Described detector is in the detector housing chip to be housed, and optical filter is contained in the detector between the chip and detector quartz window, the interior vacuum of detector or charge into blanket gas.
Described optical filter is bonded in the chip one side.
Described chip another side connects thermoelectric refrigerating unit.
Described blanket gas is an inert gas.
This utility model is to adopt near-infrared light source to send the diffuse apparatus of spectrometry of near-ir energy irradiation test substance.This instrument has been chosen two of moisture and has effectively been measured wavelength channel; because the wavelength channel number is less; can realize the collection of compact scanning-free spectrum; no moving-member; reduced the complicacy of instrument; improved the stability of instrument; realized the system design of compact single spectrum passage near infrared from detecting; this system is with optical filter bonding and encapsulation with infrared detector chip; filling blanket gas freezes simultaneously; greatly prolong the life-span of optical filter, made system compact more simple, improved the overall performance of instrument.The selection of dual wavelength passage is reasonable, cooperates high performance ead sulfide detector and signal processing circuit, makes this type instrument have very high accuracy of quantitative analysis.Through a large amount of experiments, only adopt two wavelength just can reach very high precision.The utility model apparatus structure compactness can realize that the quick nondestructive of testing sample moisture detects the precision height, analysis cost is low, be convenient to large-scale promotion and use, can be used for the moisture fast measuring of grain, medicine etc., because measuring speed can be used for the online quick determination of moisture of industry etc. soon.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model panel detector structure synoptic diagram.
Embodiment:
Further specify below in conjunction with accompanying drawing 1 the utility model:
Fig. 1 is a dual wavelength near infrared moisture analyser; sample cell upper shell center fixed is equipped with halogen near-infrared light source 1; rotate on the instrument optical modulation plate 3 is housed; two near-infrared wavelength passages 5 are fixed in light source 1 both sides; sample cell 4 is positioned at the infall of miter angle direction near-infrared radiation receiving system; be convenient to the efficient reception of testing sample near-infrared reflection energy; detector 6 is housed in the wavelength channel 5; detector is that chip 8 is housed in the detector housing 10; optical filter 7 is contained in the detector between the chip and quartz window 11; optical filter 7 is bonded on the chip 8, and the chip another side connects thermoelectric refrigerating unit 9, and is empty or charge into inert protective gas such as nitrogen in the detector.
During mensuration testing sample is put into the pond, sample cell is sent in the instrument again, and the near-infrared radiation illumination of being sent by Halogen lamp LED is mapped on the sample, and the absorption of light process sample self and reflection back are received by two near-infrared radiation receiving systems of miter angle direction.Optical chopper carries out changing into alternation behind the Che Jiebo with incident optical signal and gets light signal, be convenient to the noise processed of detector signal processing unit, sample of every measurement, the near-infrared radiation receiving system terminates in the unit with the light absorption of testing sample and reflected signal by signal and spreads out of to microprocessor.Based on moisture different sample its absorption and its content of energy of reflection light difference fast quantitative analysis.
Claims (6)
1, dual wavelength near infrared moisture analyzer, relate to wavelength channel and sample cell, sample cell upper shell center fixed is equipped with light source, rotates on the instrument optical modulation plate is housed, it is characterized in that: two near-infrared wavelength passages (5) are fixed in light source (1) both sides, and detector (6) is housed in the wavelength channel.
2, dual wavelength near infrared moisture analyzer according to claim 1 is characterized in that: sample cell (4) is positioned at 45 ° of angle intersection points of two wavelength channels place.
3, dual wavelength near infrared moisture analyzer according to claim 1; it is characterized in that: detector is that chip (8) is housed in the detector housing (10); optical filter (7) is contained between chip and the detector quartz window (11), vacuum or charge into blanket gas in the detector.
4, dual wavelength near infrared moisture analyzer according to claim 3, it is characterized in that: optical filter (7) is bonded in chip (8) simultaneously.
5, according to claim 3 or 4 described dual wavelength near infrared moisture analyzers, it is characterized in that: chip (8) another side connects thermoelectric refrigerating unit (9).
6, dual wavelength near infrared moisture analyzer according to claim 3, it is characterized in that: blanket gas is an inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093297 CN200953000Y (en) | 2006-09-14 | 2006-09-14 | Double-wavelength near infrared moisture determining instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093297 CN200953000Y (en) | 2006-09-14 | 2006-09-14 | Double-wavelength near infrared moisture determining instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953000Y true CN200953000Y (en) | 2007-09-26 |
Family
ID=38811301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620093297 Expired - Fee Related CN200953000Y (en) | 2006-09-14 | 2006-09-14 | Double-wavelength near infrared moisture determining instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200953000Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364360A (en) * | 2013-03-14 | 2013-10-23 | 深圳先进技术研究院 | Moisture meter |
| CN106769979A (en) * | 2016-12-22 | 2017-05-31 | 核工业北京化工冶金研究院 | A kind of high-accuracy infrared moisture meter detection device |
| CN107576628A (en) * | 2017-05-01 | 2018-01-12 | 无锡迅杰光远科技有限公司 | Milk powder classification and determination system and method based on near-infrared spectrum technique |
-
2006
- 2006-09-14 CN CN 200620093297 patent/CN200953000Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364360A (en) * | 2013-03-14 | 2013-10-23 | 深圳先进技术研究院 | Moisture meter |
| CN103364360B (en) * | 2013-03-14 | 2015-09-30 | 深圳先进技术研究院 | Moisture teller |
| CN106769979A (en) * | 2016-12-22 | 2017-05-31 | 核工业北京化工冶金研究院 | A kind of high-accuracy infrared moisture meter detection device |
| CN106769979B (en) * | 2016-12-22 | 2019-05-17 | 核工业北京化工冶金研究院 | A kind of high-accuracy infrared moisture meter detection device |
| CN107576628A (en) * | 2017-05-01 | 2018-01-12 | 无锡迅杰光远科技有限公司 | Milk powder classification and determination system and method based on near-infrared spectrum technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |