CN102175638A - Device for rapidly and nondestructively detecting component content of yellow rice wine - Google Patents
Device for rapidly and nondestructively detecting component content of yellow rice wine Download PDFInfo
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- CN102175638A CN102175638A CN 201110001089 CN201110001089A CN102175638A CN 102175638 A CN102175638 A CN 102175638A CN 201110001089 CN201110001089 CN 201110001089 CN 201110001089 A CN201110001089 A CN 201110001089A CN 102175638 A CN102175638 A CN 102175638A
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Abstract
The invention relates to a device for rapidly and nondestructively detecting the component content of yellow rice wine. The existing detection method has the disadvantages of large time consumption, complication in operation and damage to a sample. In the device provided by the invention, after the light emitted by a light source is collimated through a lens, a modulating disk is aligned to the collimated parallel light, thereby carrying out the light intensity modulation; the collimated parallel light is split by a spectrometer which comprises an interference filter, a filter wheel and a stepper motor; the monochromatic light with the bandwidth of 10-20nm is emitted into an immersion optical fiber probe and then emitted to a detector; after the weak photoelectric signals output by the detector are amplified by an instrument amplifier and processed through a low pass filter, and the weak photoelectric signals are converted into digital signals by a converter; and the digital signals are transmitted to a digital signal processor. The device provided by the invention can be used for carrying out the nondestructive detection on conventional detection items such as the alcohol, sugar and acidity and the like in the yellow rice wine, is rapider and more friendly-environment than the conventional yellow rice wine component physicochemical check, does not need to preprocess the sample and has the advantages of good detection result repeatability and low detection cost.
Description
Technical field
The invention belongs to photoelectric detection technology field, the device of the harmless fast detecting of particularly a kind of yellow rice wine principal ingredient (alcohol, sugar and acidity etc.) content.
Background technology
Conventional at present physics and chemistry analysis of components has higher accuracy and reliability, can analyze the various principal ingredients in the production process of yellow rice wine, but the property consuming time of its yellow rice wine The pretreatment, detection and to the sample destructiveness, complex operation, complexity, resulting analysis result poor in timeliness.In the last few years, near-infrared spectral analysis technology aspect attributional analysis with its fast, stable, accurately, characteristics such as energy-conserving and environment-protective (need not any reagent) and low cost, development fast aspect alternative conventional physico-chemical analysis, near infrared technology has been used for the constituent analysis of various food and agricultural product, has been listed in the detection method of standard in the near infrared detection method of Japan, the U.S. and European countries' part agricultural product.
Near-infrared spectrum technique is a kind of structural analysis technique based on the vibration of functional group in the compound and polar bond, with its advantage such as quick, harmless, easy, accurate, has been widely used in a plurality of fields such as food, oil, chemical industry, medicine.In recent years, near-infrared spectral analysis technology is more active in conjunction with the application of chemometrics method in drinks Quality Detection such as liquor, beer, grape wine, and the on-line monitoring of quality has obtained practical application in sweats such as liquor, grape wine.
Present national yellow rice wine examination criteria regulation, the detection mode of its principal ingredient alcohol, sugar and acidity is the physics and chemistry detection method, and the absolute difference of twice independent measurement result under its repeat condition is no more than 5% of arithmetic mean.
Summary of the invention
The objective of the invention is to deficiency, provide a kind of quick nondestructive to detect the device of yellow rice wine component content at existing physico-chemical examination technique.
Apparatus of the present invention accuracy of detection can satisfy the accuracy of detection requirement of yellow rice wine national standard, has realized the quick nondestructive detection simultaneously of yellow rice wine principal ingredient polycomponent simultaneously, and single yellow rice wine sample average is about 45 seconds detection time, has improved the yellow rice wine detection efficiency greatly.
The objective of the invention is to be achieved through the following technical solutions:
The device that a kind of quick nondestructive detects the yellow rice wine component content comprises optical system, photoelectric signal collection system, signal processing system.
Described optical system comprises light source, first lens, diaphragm, second lens, chopper wheel, dc brushless motor, optical filter wheel, interference filter, stepper motor, the 3rd lens, incident light fibre-optical splice, emergent light fibre-optical splice, incident optical, outgoing optical fiber, fibre-optical probe and near infrared detector.
The light that light source sends collimates behind first lens, diaphragm and second lens successively; The chopper wheel aligning direct light that is driven by dc brushless motor carries out intensity modulation, light modulated becomes monochromatic light through behind the interference filter, described interference filter is contained on the optical filter wheel, optical filter wheel along the circumferential direction is evenly distributed with a plurality of interference filters, and stepper motor drives optical filter wheel and rotates.Monochromatic light arrives the incident light fibre-optical splice through the 3rd lens again, one end of incident light optical fiber is connected with the incident light fibre-optical splice, the other end is connected with the input end of fibre-optical probe, the output terminal of fibre-optical probe is connected with an end of emergent light optical fiber, the other end of emergent light optical fiber is connected with the emergent light fibre-optical splice, inputs near infrared detector by the detection light of emergent light fibre-optical splice outgoing;
Described light source, first lens, diaphragm, second lens, interference filter and the coaxial setting of the 3rd lens;
Described modulating light frequency scope is 400Hz～1000HZ;
Described monochromatic light bandwidth is 10nm～20nm;
Described chopper wheel is a mechanical type chopping the light device;
The detecting area of described fibre-optical probe front end is inner concave shape, be provided with the 4th lens, reflective mirror and sway brace in the detecting area, described sway brace one end is fixedlyed connected with the recess top of detecting area, the other end and edge of the 4th lens are fixed, another edge of the 4th lens is fixed on the middle part of recess madial wall, and described reflective mirror is arranged on the notched bottoms of detecting area.
Described photoelectric signal collection system comprises instrument amplifier, low-pass filter and A/D converter; The output terminal of near infrared detector is connected with the input end of instrument amplifier in the optical system, and the output terminal of instrument amplifier is connected with the input end of low-pass filter, and the output terminal of low-pass filter is connected with the input end of A/D converter;
Described signal processing system is a digital signal processor, the output terminal of A/D converter is connected with the digital signal processor input end in the photoelectric signal collection system, and digital signal processor can also be circumscribed with USB2.0 communication interface, display module, driver for brushless DC motor and stepper motor driver.
Of the present invention have following beneficial effect with respect to prior art: the present invention realizes the Non-Destructive Testing of conventional sense projects such as alcohol in the yellow rice wine, sugar and acidity,, environmental protection more more quick, need not to carry out sample pretreatment than the physical and chemical inspection of conventional yellow rice wine composition, the testing result good reproducibility, testing cost is low.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a fundamental diagram of the present invention;
Fig. 3 is the chopper wheel three-view diagram;
Fig. 4 is the optical filter wheel structural representation;
Fig. 5 is a fibre-optical probe principle of work synoptic diagram;
Fig. 6 is a multi-model predictive mode synoptic diagram.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the device that a kind of quick nondestructive detects the yellow rice wine component content comprises optical system, photoelectric signal collection system, signal processing system, and power supply 21 provides working power for whole device.
Optical system comprises light source 1, first lens 2, diaphragm 3, second lens 4, chopper wheel 5, dc brushless motor 6, optical filter wheel 7, interference filter 8, stepper motor 9, the 3rd lens 11, incident light fibre-optical splice 10, emergent light fibre-optical splice 12, incident optical 22, outgoing optical fiber 23, fibre-optical probe 24 and near infrared detector 13.
The light that light source sends collimates behind first lens, diaphragm and second lens successively; The chopper wheel aligning direct light that is driven by dc brushless motor carries out intensity modulation, light modulated becomes monochromatic light through behind the interference filter, interference filter is contained on the optical filter wheel, optical filter wheel along the circumferential direction is evenly distributed with a plurality of interference filters (as shown in Figure 4), optical filter is contained in the optical filter mounting hole 30, and stepper motor drives optical filter wheel and rotates.Monochromatic light arrives the incident light fibre-optical splice through the 3rd lens again, one end of incident light optical fiber is connected with the incident light fibre-optical splice, the other end is connected with the input end of fibre-optical probe, the output terminal of fibre-optical probe is connected with an end of emergent light optical fiber, the other end of emergent light optical fiber is connected with the emergent light fibre-optical splice, inputs near infrared detector by the detection light of emergent light fibre-optical splice outgoing;
Light source, first lens, diaphragm, second lens, interference filter and the coaxial setting of the 3rd lens; The modulating light frequency scope is 400Hz～1000HZ; The monochromatic light bandwidth is 10nm～20nm;
As shown in Figure 3, the mechanical type chopping the light device in the present embodiment is by forming by milling three road light tanks on the right cylinder, and three road light tank equal angles distribute, and dc brushless motor drives mechanical type chopping the light device and rotates, and light beam 29 passes from light tank.
As shown in Figure 5, the detecting area of fibre-optical probe front end is inner concave shape, be provided with the 4th lens 26, reflective mirror 25 and sway brace in the detecting area, sway brace one end is fixedlyed connected with the recess top of detecting area, the other end and 26 1 edges of the 4th lens are fixed, the focal distance f equivalence of the height of sway brace and the 4th lens the 4th lens, the 4th lens 26 another edges are fixed on the middle part of recess madial wall, and reflective mirror 25 is arranged on the notched bottoms of detecting area.The optical fiber outgoing end face of fibre-optical probe and incident end face are on same plane, and symmetry occupy the place, focal plane of the 4th lens, reflective mirror occupy the place, focal plane of the convex lens of an other side equally, the outgoing end face of two optical fiber and the air line distance L=2 * tg of incident end face (the maximum emergence angle of optical fiber/2) * focal distance f, light beam is incident to the 4th lens 26 in optical fiber emergence angle 28 scopes, reflex to the 4th lens 26 once more via reflective mirror 25, then incident in 27 scopes of optical fiber input angle.
The photoelectric signal collection system comprises instrument amplifier 14, low-pass filter 15 and A/D converter 16; The output terminal of near infrared detector is connected with the input end of instrument amplifier in the optical system, the output terminal of instrument amplifier is connected with the input end of low-pass filter, the output terminal of low-pass filter is connected with the input end of A/D converter. and the faint light electric signal of detector output is amplified by instrument amplifier, through the low-pass filter noise reduction process, be converted to digital signal by 24 high precision Delta-Sigma A/D converters at last again.
Signal processing system is a digital signal processor 18, the output terminal of A/D converter is connected with the digital signal processor input end in the photoelectric signal collection system, and digital signal processor can also be circumscribed with USB2.0 communication interface 19, display module 20, dc brushless motor and stepper motor driver 17.Digital signal processor DSP is handled digital signal, calculates the yellow rice wine component content.Can directly give host computer by the USB2.0 communication interface with data in addition, calculate the yellow rice wine component content mutually by computing machine.Digital signal processor DSP is handled digital signal, calculates the average power of effective modulation signal, with the main foundation of average power as absorbance calculating.Example: calculate standard transmitted light electric signal average power (P earlier
o), calculate yellow rice wine transmitted light electric signal average power (P) then, by transmission computing formula A=log (P
o/ P) calculate yellow rice wine sample diffuse reflection absorbance.
The present invention utilizes near-infrared spectral analysis technology (Near-infrared Spectrum Technology) that the yellow rice wine principal ingredient is analyzed.The device that this quick nondestructive detects the yellow rice wine component content provides high measurement accuracy spectrum, is the carrier of sample information, also is the hardware foundation of whole near-infrared spectral analysis technology; Yellow rice wine sample detection model is certain inner links between yellow rice wine sample chemical constituent data and the yellow rice wine sample near infrared spectrum data based on a large amount of sample datas.After modelling finished, model also needed constantly to safeguard and upgrading, thereby better finishes the qualitative and quantitative detection of sample.
As shown in Figure 2, the principle of work that quick nondestructive of the present invention detects the device of yellow rice wine component content is, the light that the bromine tungsten filament lamp light source sends is after collimated, chopping the light device collimation directional light carries out intensity modulation, again via interference filter, the light-dividing device beam split that optical filter wheel and stepper motor constitute, bandwidth is that the monochromatic light incident immersion fibre-optical probe of 10nm～20nm shines the InGaAs detector then then, the faint light electric signal of detector output is after instrument amplifier amplification and low-pass filtering, be converted to digital signal by 24 high precision Delta-Sigma A/D converters, this digital signal passes to the DSP digital signal processor again, calculate the transmission absorbance by digital processing unit at last, import yellow rice wine component content analytical model then and draw alcohol in the yellow rice wine sample, sugar and acidity content, and on LCD, show in real time.This device can also be interconnected by USB2.0 interface and computing machine that device carries, by computing machine spectroscopic data managed and safeguards.
Set up yellow rice wine near infrared spectrum storehouse among the present invention, what mainly consider when selecting calibration sample is the rejecting of singular point and the selection of representative sample, clustering method and K-S method have mainly been adopted, and the natural characteristic of each component of yellow rice wine has been used in synthetic study, set up the some near infrared light spectrum models of a plurality of components respectively, surveyed the spectrum that obtains and to carry out cubage by the corresponding a plurality of model of Intelligence Selection.
The process of utilizing this device to detect is:
1. set up analytical model under the room temperature condition.
1) (near infrared spectrum of 1100nm～2500nm) according to characteristic wavelength systems of selection such as spectral characteristic and genetic algorithms, extracts the near infrared characteristic wavelength of four kinds of conventional ingredients of yellow rice wine to utilize the yellow rice wine all band.
2) utilize multiple linear regression to set up the model of four kinds of conventional ingredients in the yellow rice wine.Model is a spectrum parameter with the absorbance of selected near infrared characteristic wave strong point, and model form is:
Certain composition detection model is not unique, and prediction just has a plurality of models with a kind of composition, last several model output results' that predict the outcome weighted mean value.Its core concept be the weighted mean of a plurality of model predication values as last measurement, weighted value determined by combined factors such as current test environment, sample state and measurement number of times, as shown in Figure 6.
K1 wherein, K2, K3, K4 are the weighting coefficients of model.A plurality of models may appear setting up in the process of model, to detect the yellow rice wine alcohol content is example, can adopt this multi-model multiple measurement mode, its key core point is exactly a weight how to determine each model, need great deal of experiment data analysis to draw, can think the secondary model reconstruction, be the comprehensive pattern master of single submodel combination.Even the benefit of this method is when to be exactly one of them or several submodel error big, other several submodels also can suppress excessiveization of deviation.
2. test sample, the immersion fibre-optical probe enters puts into the yellow rice wine sample, and in the testing process, probe will guarantee stationary state.Before putting into the yellow rice wine sample, to fully rinse well probe.
3. instrument draws the absorbance at the yellow rice wine sample different characteristic wavelength place of three kinds of conventional ingredient content that can react alcohol in the yellow rice wine, acidity and sugar.
For example adopt 10 optical filters, optical filter wheel rotates the absorbance that can obtain under the work at present condition once enclosing, the absorbance matrix [
].
4. with the absorbance matrix input relevant detection model of characteristic wave strong point, generate discrete absorbance spectrum, and draw the content of three kinds of compositions, and on LCDs, show in real time, can also carry out Web publishing by computing machine by Model Calculation.
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (5)
1. the device of a quick nondestructive detection yellow rice wine component content comprises optical system, photoelectric signal collection system, signal processing system, it is characterized in that:
Described optical system comprises light source, first lens, diaphragm, second lens, chopper wheel, dc brushless motor, optical filter wheel, interference filter, stepper motor, the 3rd lens, incident light fibre-optical splice, emergent light fibre-optical splice, incident optical, outgoing optical fiber, fibre-optical probe and near infrared detector;
The light that light source sends collimates behind first lens, diaphragm and second lens successively; The chopper wheel aligning direct light that is driven by dc brushless motor carries out intensity modulation, light modulated becomes monochromatic light through behind the interference filter, described interference filter is contained on the optical filter wheel, optical filter wheel along the circumferential direction is evenly distributed with a plurality of interference filters, and stepper motor drives optical filter wheel and rotates; Monochromatic light arrives the incident light fibre-optical splice through the 3rd lens again, one end of incident light optical fiber is connected with the incident light fibre-optical splice, the other end is connected with the input end of fibre-optical probe, the output terminal of fibre-optical probe is connected with an end of emergent light optical fiber, the other end of emergent light optical fiber is connected with the emergent light fibre-optical splice, inputs near infrared detector by the detection light of emergent light fibre-optical splice outgoing;
Described light source, first lens, diaphragm, second lens, interference filter and the coaxial setting of the 3rd lens;
Described photoelectric signal collection system comprises instrument amplifier, low-pass filter and A/D converter; The output terminal of near infrared detector is connected with the input end of instrument amplifier in the optical system, and the output terminal of instrument amplifier is connected with the input end of low-pass filter, and the output terminal of low-pass filter is connected with the input end of A/D converter;
Described signal processing system is a digital signal processor, the output terminal of A/D converter is connected with the digital signal processor input end in the photoelectric signal collection system, and digital signal processor is circumscribed with USB2.0 communication interface, display module, driver for brushless DC motor and stepper motor driver.
2. a kind of quick nondestructive according to claim 1 detects the device of yellow rice wine component content, it is characterized in that: the detecting area of described fibre-optical probe front end is inner concave shape, be provided with the 4th lens, reflective mirror and sway brace in the detecting area, described sway brace one end is fixedlyed connected with the recess top of detecting area, the other end and edge of the 4th lens are fixed, another edge of the 4th lens is fixed on the middle part of recess madial wall, and described reflective mirror is arranged on the notched bottoms of detecting area.
3. a kind of quick nondestructive according to claim 1 detects the device of yellow rice wine component content, and it is characterized in that: described modulating light frequency scope is 400Hz～1000HZ.
4. a kind of quick nondestructive according to claim 1 detects the device of yellow rice wine component content, and it is characterized in that: described monochromatic light bandwidth is 10nm～20nm.
5. a kind of quick nondestructive according to claim 1 detects the device of yellow rice wine component content, and it is characterized in that: described chopper wheel is a mechanical type chopping the light device.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104949935A (en) * | 2014-03-31 | 2015-09-30 | 徐军 | Method for realizing real-time monitoring to white wine by use of near infrared spectrum |
| CN104949934A (en) * | 2014-03-31 | 2015-09-30 | 徐军 | Method for rapidly detecting principal component in white spirit by utilizing near infrared spectrum |
| CN106290310A (en) * | 2016-09-27 | 2017-01-04 | 华中科技大学 | A kind of low cost highly sensitive laser microprobe elemental analyser |
| CN108226086A (en) * | 2018-01-22 | 2018-06-29 | 上海海洋大学 | A kind of red wine alcoholic strength and total sugar content quantitative analysis method |
| CN108318428A (en) * | 2018-05-16 | 2018-07-24 | 德州尧鼎光电科技有限公司 | A kind of photoelectric sensing measuring device |
| CN109060672A (en) * | 2018-08-22 | 2018-12-21 | 广州万孚生物技术股份有限公司 | Systems for optical inspection |
| CN109060678A (en) * | 2018-08-27 | 2018-12-21 | 北京雪迪龙科技股份有限公司 | A kind of absorbance measuring circuit |
| CN110208212A (en) * | 2019-07-04 | 2019-09-06 | 中南林业科技大学 | A kind of comprehensive non-destructive testing device of near infrared spectrum and control method |
| CN110411963A (en) * | 2019-08-08 | 2019-11-05 | 重庆科技学院 | A kind of portable spectrophotometer of Heavy Metals in Waters ion detection |
| CN113866108A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Component content measuring device and terminal device |
| CN116818711A (en) * | 2023-08-28 | 2023-09-29 | 四川威斯派克科技有限公司 | Near infrared spectrum detector |
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| CN104949935A (en) * | 2014-03-31 | 2015-09-30 | 徐军 | Method for realizing real-time monitoring to white wine by use of near infrared spectrum |
| CN104949934A (en) * | 2014-03-31 | 2015-09-30 | 徐军 | Method for rapidly detecting principal component in white spirit by utilizing near infrared spectrum |
| CN106290310A (en) * | 2016-09-27 | 2017-01-04 | 华中科技大学 | A kind of low cost highly sensitive laser microprobe elemental analyser |
| CN108226086A (en) * | 2018-01-22 | 2018-06-29 | 上海海洋大学 | A kind of red wine alcoholic strength and total sugar content quantitative analysis method |
| CN108318428A (en) * | 2018-05-16 | 2018-07-24 | 德州尧鼎光电科技有限公司 | A kind of photoelectric sensing measuring device |
| CN109060672A (en) * | 2018-08-22 | 2018-12-21 | 广州万孚生物技术股份有限公司 | Systems for optical inspection |
| CN109060678A (en) * | 2018-08-27 | 2018-12-21 | 北京雪迪龙科技股份有限公司 | A kind of absorbance measuring circuit |
| CN110208212A (en) * | 2019-07-04 | 2019-09-06 | 中南林业科技大学 | A kind of comprehensive non-destructive testing device of near infrared spectrum and control method |
| CN110208212B (en) * | 2019-07-04 | 2021-06-18 | 中南林业科技大学 | Near infrared spectrum omnibearing nondestructive detection device and control method |
| CN110411963A (en) * | 2019-08-08 | 2019-11-05 | 重庆科技学院 | A kind of portable spectrophotometer of Heavy Metals in Waters ion detection |
| CN113866108A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Component content measuring device and terminal device |
| CN113866108B (en) * | 2020-06-30 | 2022-09-23 | 华为技术有限公司 | Component content measuring device and terminal device |
| CN116818711A (en) * | 2023-08-28 | 2023-09-29 | 四川威斯派克科技有限公司 | Near infrared spectrum detector |
| CN116818711B (en) * | 2023-08-28 | 2023-11-10 | 四川威斯派克科技有限公司 | Near infrared spectrum detector |
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Application publication date: 20110907 |