CN2615660Y - Diffuse transmission measuring device for near infrared grain quality analysis instrument - Google Patents
Diffuse transmission measuring device for near infrared grain quality analysis instrument Download PDFInfo
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- CN2615660Y CN2615660Y CN 03242890 CN03242890U CN2615660Y CN 2615660 Y CN2615660 Y CN 2615660Y CN 03242890 CN03242890 CN 03242890 CN 03242890 U CN03242890 U CN 03242890U CN 2615660 Y CN2615660 Y CN 2615660Y
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- source input
- light source
- sample container
- diffuse transmission
- fiber
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Abstract
The utility model provides a diffuse transmission measuring device for near infrared quality analyzer of grain. The diffuse transmission measuring device comprises light source input fiber, signal receiving fiber, a coaxial sampling device and a round lucent rotary sample container. Light source input fiber is equipped on one side of the coaxial sampling device by a fiber fixer. And signal receiving fiber is equipped on the other side of the coaxial sampling device by another fiber fixer, and source input surface of light source input fiber faces to signal receiving surface of signal receiving fiber. The round lucent rotary sample container is located between the source input surface of light source input fiber and signal receiving surface of signal receiving fiber facing to each other. A diaphragm and a light-reducing slice with fixed subsidence ratio are equipped on the round lucent rotary sample container. The utility model can make near infrared light transmit through grain equably, which achieves the purpose improving representation and accuracy of absorbing spectrum of grain.
Description
Technical field
The utility model belongs to the near infrared spectroscopy technical field, relates to a kind of grain quality analyser, particularly relates to a kind of near infrared grain quality analyser diffuse transmission determinator.
Background technology
The employing near infrared spectroscopy can be measured the multiple component content in cereal and solid, liquid, the gases such as chemical products and food.For the online detection of solid, adopting noncontact, non-destructive to detect component content is one of trend of developing rapidly both at home and abroad in recent years of near infrared technology.Compare with the routine chemical components detection technique, near infrared spectroscopy has rapidity, untouchable, non-destructive three big advantages, is paid attention to by domestic and international detection technique industry in recent years.But because shape, size, the inner structure difference of variety classes cereal kernel, when adopting reflection mode determinator to gather the absorption spectrum of cereal kernel, the representativeness of measurement result, accuracy meeting are subjected to very big influence.And when adopting the transmission mode determinator to gather the absorption spectrum of cereal kernel, because density degree, the penetrability of solid material have bigger variation, therefore make near-infrared spectrum technique when measuring the solid material quality, also exist certain influence, how to solve these influences effectively and be near-infrared spectrum technique and move towards the problem that to be paid attention in the process of practicability.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of near infrared grain quality analyser diffuse transmission determinator, to improve the representativeness and the accuracy of cereal kernel absorption spectromtry.
Above-mentioned purpose of the present utility model is achieved in that a kind of near infrared grain quality analyser diffuse transmission determinator, by the light source input optical fibre, signal receives optical fiber, coaxial sampling thief and round transparent rotatory sample container are formed, the light source input optical fibre is arranged at a side of coaxial sampling thief via fibre-optical fixator, signal receives optical fiber then is arranged at coaxial sampling thief via fibre-optical fixator opposite side, and the signal receiving plane that the light source input face of light source input optical fibre and signal receive optical fiber is the subtend setting, round transparent rotatory sample container receives between the signal receiving plane of optical fiber at the light source input face and the signal of the light source input optical fibre that is the subtend setting, it is characterized in that having diaphragm and fixed attenuation on the round transparent rotatory sample container and compare light damping plate.
Near infrared grain quality analyser diffuse transmission determinator described in the utility model, it is characterized in that, described diaphragm is fan-shaped diaphragm, and be built in the round transparent rotatory sample container, and fixed attenuation than light damping plate be circular fixed attenuation than light damping plate, and be arranged on the fan-shaped diaphragm light source input face position corresponding to the light source input optical fibre.
By this device, can make near infrared light equably transmission cross cereal kernel, reach the purpose that improves cereal kernel absorption spectromtry representativeness, accuracy.
Below, in conjunction with specific embodiments, the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of near infrared grain quality analyser with diffuse transmission formula determinator;
Fig. 2 is an A-A place cut-open view among Fig. 1.
Wherein: 1-light source input optical fibre, 2, the 8-fibre-optical fixator, the coaxial sampling thief of 3-, the 5-round transparent rotatory sample container, 4, the Transparent frame of 6-round transparent rotatory sample container, 7-measured object containing cavity, the 9-signal receives optical fiber, the fan-shaped diaphragm of 10-, and the 11-fixed attenuation compares light damping plate.
Embodiment
With reference to Fig. 1, it is the structural representation of near infrared grain quality analyser with diffuse transmission formula determinator.The near infrared grain quality analyser diffuse transmission determinator that the utility model provides, one side of its coaxial sampling thief 3 is fixed with light source input optical fibre 1 via fibre-optical fixator 2, and the opposite side of coaxial sampling thief 3 is fixed with signal reception optical fiber 9 via fibre-optical fixator 8, from Fig. 1, can clearly be seen that, the signal receiving plane that the light source input face of light source input optical fibre 1 and signal receive optical fiber 9 is the subtend setting, light source input face and signal at the light source input optical fibre 1 that is the subtend setting receive between the signal receiving plane of optical fiber 9, be provided with round transparent rotatory sample container 5, the end face of this round transparent rotatory sample container 5 and bottom surface are respectively Transparent frame 4,6, at Transparent frame 4, form measured object containing cavity 7 between 6.
In conjunction with Fig. 2, it is the structural representation of round transparent rotatory sample container 5.The inside of this round transparent rotatory sample container 5 is provided with fan-shaped diaphragm 10, and the light source input face position corresponding to light source input optical fibre 1 on this fan-shaped diaphragm 10 is equipped with circular fixed attenuation than light damping plate 11.
Concrete working method of the present utility model is: the measured object containing cavity 7 of cereal kernel being put into round transparent rotatory sample container 5, open near-infrared light source, adjust rotational speed according to different cereal, near infrared light promptly by light source input optical fibre 1 equably transmission cross cereal kernel, signal receives optical fiber 9 near-infrared absorption spectrum information is delivered to computer data acquisition system, utilize program to carry out data processing, it can carry out following steps:
Half-light when 1, measuring near infrared light spectrum signal light tight is strong;
2, measure the fixedly light source intensity behind the dim light of near infrared light spectrum signal;
3, measure the spectral signal of testee;
4, utilization transmitance proportionate relationship compensates.Promptly
Spectral signal-the half-light of transmitance=testee is strong/and fixedly light source intensity-the half-light behind the dim light is strong
Automatically compensate the influence of various undesired signals by this method, to reach the stability that improves measuring accuracy and system effectively.
In the present embodiment, utilize above-mentioned diffuse transmission formula determinator can form near infrared grain quality analyser very easily.
Claims (5)
1, a kind of near infrared grain quality analyser diffuse transmission determinator, comprise rack-mount light source input optical fibre, signal receives optical fiber, coaxial sampling thief and transparent rotary sample container, described light source input optical fibre is arranged at a side of described coaxial sampling thief, and signal receives the opposite side that optical fiber is arranged at described coaxial sampling thief, and the signal receiving plane that the light source input face of light source input optical fibre and signal receive optical fiber is the subtend setting, described transparent rotary sample container is between described light source input face and described signal receiving plane, it is characterized in that described transparent rotary sample container is provided with diaphragm and the fixed attenuation that is arranged on the described diaphragm compares light damping plate.
2, diffuse transmission determinator as claimed in claim 1 is characterized in that, described transparent rotary sample container is circular adjustable speed rotary sample container.
3, diffuse transmission determinator as claimed in claim 1 is characterized in that, described diaphragm is fan-shaped diaphragm, and is built in the described round transparent rotatory sample container.
4, as claim 2 or 3 described diffuse transmission determinators, it is characterized in that, described fixed attenuation than light damping plate be circular fixed attenuation than light damping plate, and be arranged on the fan-shaped diaphragm corresponding to described light source input face position.
5, diffuse transmission determinator as claimed in claim 4 is characterized in that, described source input optical fibre and signal receive optical fiber and be installed on the described coaxial sampling thief by fibre-optical fixator respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242890 CN2615660Y (en) | 2003-04-01 | 2003-04-01 | Diffuse transmission measuring device for near infrared grain quality analysis instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242890 CN2615660Y (en) | 2003-04-01 | 2003-04-01 | Diffuse transmission measuring device for near infrared grain quality analysis instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615660Y true CN2615660Y (en) | 2004-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03242890 Expired - Lifetime CN2615660Y (en) | 2003-04-01 | 2003-04-01 | Diffuse transmission measuring device for near infrared grain quality analysis instrument |
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| CN (1) | CN2615660Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042968A (en) * | 2010-11-24 | 2011-05-04 | 南京财经大学 | Grain quality near infrared rapid detection wireless system |
| CN101097182B (en) * | 2006-06-29 | 2011-06-15 | 中国石油化工股份有限公司 | Dynamic rotating sample pool and infrared spectrum analysis general purpose accessory |
| CN103048267A (en) * | 2012-02-10 | 2013-04-17 | 济南金宏利实业有限公司 | Rotary sampling device of portable near-infrared spectrometer of AOTF (acousto-optic tunable filter) and application |
| CN104588329A (en) * | 2014-11-28 | 2015-05-06 | 中国科学院半导体研究所 | Seed automatic identification and sorting device based on near-infrared diffuse transmittance spectra |
| CN106770346A (en) * | 2016-11-29 | 2017-05-31 | 中国科学院合肥物质科学研究院 | One kind is based on near-infrared diffusing transmission solids on-line detecting system |
| CN109060679A (en) * | 2018-09-07 | 2018-12-21 | 中国计量科学研究院 | Ultraspectral transmittance etalon and visibility measurement device |
| CN109752348A (en) * | 2018-09-07 | 2019-05-14 | 中国计量科学研究院 | Transmittance etalon, transmittance measuring device |
-
2003
- 2003-04-01 CN CN 03242890 patent/CN2615660Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097182B (en) * | 2006-06-29 | 2011-06-15 | 中国石油化工股份有限公司 | Dynamic rotating sample pool and infrared spectrum analysis general purpose accessory |
| CN102042968A (en) * | 2010-11-24 | 2011-05-04 | 南京财经大学 | Grain quality near infrared rapid detection wireless system |
| CN102042968B (en) * | 2010-11-24 | 2012-05-02 | 南京财经大学 | Grain quality near infrared rapid detection wireless system |
| CN103048267A (en) * | 2012-02-10 | 2013-04-17 | 济南金宏利实业有限公司 | Rotary sampling device of portable near-infrared spectrometer of AOTF (acousto-optic tunable filter) and application |
| CN104588329A (en) * | 2014-11-28 | 2015-05-06 | 中国科学院半导体研究所 | Seed automatic identification and sorting device based on near-infrared diffuse transmittance spectra |
| CN106770346A (en) * | 2016-11-29 | 2017-05-31 | 中国科学院合肥物质科学研究院 | One kind is based on near-infrared diffusing transmission solids on-line detecting system |
| CN106770346B (en) * | 2016-11-29 | 2019-10-22 | 中国科学院合肥物质科学研究院 | One kind being based on near-infrared diffusing transmission solids on-line detecting system |
| CN109060679A (en) * | 2018-09-07 | 2018-12-21 | 中国计量科学研究院 | Ultraspectral transmittance etalon and visibility measurement device |
| CN109752348A (en) * | 2018-09-07 | 2019-05-14 | 中国计量科学研究院 | Transmittance etalon, transmittance measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130401 Granted publication date: 20040512 |