CN2739619Y - On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content - Google Patents

On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content Download PDF

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Publication number
CN2739619Y
CN2739619Y CN 200420110991 CN200420110991U CN2739619Y CN 2739619 Y CN2739619 Y CN 2739619Y CN 200420110991 CN200420110991 CN 200420110991 CN 200420110991 U CN200420110991 U CN 200420110991U CN 2739619 Y CN2739619 Y CN 2739619Y
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CN
China
Prior art keywords
model
utility
vinegar
total acid
acid content
Prior art date
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Expired - Fee Related
Application number
CN 200420110991
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Chinese (zh)
Inventor
刘木清
周德成
周小丽
韩磊
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Fudan University
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Fudan University
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Publication date
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Priority to CN 200420110991 priority Critical patent/CN2739619Y/en
Application granted granted Critical
Publication of CN2739619Y publication Critical patent/CN2739619Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model is on-line multi-channel near infrared spectrograph for measuring vinegar total acid content. This is an advanced light spectrum measuring and testing technique in progressive of recent years. Traditionary method of measuring total acid content of vinegar is need to acquisition part sample which is can complete in condition of chemical laboratory, relating to on-line test it is need spend a great amount of outgo expense and time. The utility model adopts is on account of multichannel of optical fiber transmission to acquisition technique, and bind to is tritus stechiometry qualitative definite quantity software, the utility model is satisfied in time monitoring of assembly line and action to advise producing, gates through build model of a good deal of vinegar standard sample, the utility model can rapid survey order advance constituent content of unknown sample. The property and action of near-infrared optical spectrometer is reached national leading water level, and in cost performance it has more ascendancy than foreign commodity.

Description

A kind of online multichannel near-infrared spectroscopy that is used for measuring the vinegar total acid content
Technical field
The utility model is a kind of online multichannel near-infrared spectroscopy that is used for measuring the vinegar total acid content, and it can realize quick on-line testing, and is practical and convenient.
Technical background
Content of total acid etc. all needs the collecting part sample to finish under the condition of chemical laboratory in traditional test vinegar, time is long, complicated operation, inefficiency, and lag behind production, be difficult to play in time monitoring and instruct the effect of producing, the instrument and equipment investment of whole experiment is bigger, and expending of the laboratory energy, experiment reagent is also very big.
Adopting Near Infrared Measurement Technology is to grow up in China recent years, and this method can reduce labour intensity, reduces analysis cost, improves the real-time of analysis efficiency and monitoring.At present external this technology comparative maturity, but instrument is on the high side.
Summary of the invention
The purpose of this utility model be design a kind of pollution-free, easy to operate, efficient is high, can in time detect the online multichannel near-infrared spectroscopy of total acid content in the vinegar.
A kind of online multichannel near-infrared spectroscopy that is used for measuring the vinegar total acid content that the present invention proposes, form by light source, detection, several parts of analysis, it is characterized in that near-infrared light source (1) splicing optical fibers (7), behind the optical fiber (7) vinegar sample cell (2), light after the transmission is by optical fiber process light-dividing device (3), incide on the detector (4), detector (4) back connection microprocessor (5), microprocessor (5) back connects PC (6).
During concrete mensuration near-infrared light source by optical fiber input to the vinegar sample cell, light after the transmission is by optical fiber process light-dividing device, finally incide on the detector, the signal that is collected by detector is connected with the PC serial line interface by microprocessor control, the operation spectral analysis software is carried out analyzing and processing to the spectral information that collects on PC, adopts existing ripe Chemical Measurement algorithm principal component analysis (PCA), the content that partial least square method calculates contained total acid in the vinegar.
In the utility model, near-infrared light source (1) is a halogen tungsten lamp.
In the utility model, detector (4) is a 128-512 passage, promptly can satisfy the measurement needs.
The utility model can directly be connected with PC by serial line interface, provides convenience for the needed on-line testing of some manufacturers.
The utility model has following characteristics:
1 can replace traditional chemical to measure the method for vinegar component concentration;
2 do not destroy sample, do not need to use reagent, thus free from environmental pollution, be more satisfactory " green " measuring technology;
3 compare the scan-type spectrometer, can realize the quick collection of spectrum in a short period of time;
4 obtain sample spectra after, can realize the prediction of sample component concentration by quantitative analysis software fast;
5 cost performances are compared external like product and are had advantage.
Description of drawings
Fig. 1 is a multichannel near-infrared spectroscopy device structural drawing of the present utility model.
Number in the figure: 1 is infrared light supply, and 2 is sample cell, and 3 is light-dividing device, and 4 is detector, and 5 is microprocessor, and 6 is PC.
Embodiment
The used element of the utility model is as follows:
Near-infrared light source: halogen tungsten lamp;
The quartz sample pool of all sizes such as sample cell: 2mm, 5mm, 10mm;
Detector: CCD hyperchannel device, (using 128,512 passages respectively);
PC: notebook computer;
The instrument assembling process:
At first the halogen tungsten lamp light source is put into instrument, then with the near infrared spectrum acquisition instrument, according to serial interface standard, link to each other with PC, vinegar sample to be measured is put into sample cell, assemble according to figure (1), operation Chemical Measurement software gets final product.Through use test, the vinegar sample spectral signals good reproducibility that the utility model collects, measurement data is accurate, and the unknown sample predicated error is in allowed band.
Used Chemical Measurement software is existing ripe software, in conjunction with visual Integrated Development Environment Visual C++ and powerful science software for calculation Matlab, utilize the interface between Matlab and the Visual C++, call Chemical Measurement algorithm principal component analysis (PCA), partial least square method ripe among the Matlab by Visual C++ and wait the quantitative measurment that realizes total acid content in the vinegar.

Claims (3)

1, a kind of online multichannel near-infrared spectroscopy that is used for measuring the vinegar total acid content, form by light source, detection, several parts of analysis, it is characterized in that near-infrared light source (1) splicing optical fibers (7), behind the optical fiber (7) vinegar sample cell (2), light after the transmission is by optical fiber process light-dividing device (3), incide on the detector (4), detector (4) back connection microprocessor (5), microprocessor (5) back connects PC (6).
2, spectrometer as claimed in claim 1 is characterized in that near-infrared light source (1) is a halogen tungsten lamp.
3, spectrometer as claimed in claim 1 is characterized in that detector (4) is a 128-512 passage.
CN 200420110991 2004-11-18 2004-11-18 On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content Expired - Fee Related CN2739619Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420110991 CN2739619Y (en) 2004-11-18 2004-11-18 On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420110991 CN2739619Y (en) 2004-11-18 2004-11-18 On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content

Publications (1)

Publication Number Publication Date
CN2739619Y true CN2739619Y (en) 2005-11-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420110991 Expired - Fee Related CN2739619Y (en) 2004-11-18 2004-11-18 On-line multi-channel near infrared spectrougraph for measuring vinegar total acid content

Country Status (1)

Country Link
CN (1) CN2739619Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879352A (en) * 2012-09-13 2013-01-16 江苏恒顺醋业股份有限公司 Acquisition device for near-infrared transmitted spectrum of vinegar and method for identifying vinegar origin
CN105606420A (en) * 2016-01-08 2016-05-25 华南理工大学 Method for rapidly and accurately measuring content of total acid in food based on phase conversion reaction
CN107132197A (en) * 2017-05-25 2017-09-05 江苏大学 A kind of detection method and device of vinegar total acid content

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879352A (en) * 2012-09-13 2013-01-16 江苏恒顺醋业股份有限公司 Acquisition device for near-infrared transmitted spectrum of vinegar and method for identifying vinegar origin
CN105606420A (en) * 2016-01-08 2016-05-25 华南理工大学 Method for rapidly and accurately measuring content of total acid in food based on phase conversion reaction
CN107132197A (en) * 2017-05-25 2017-09-05 江苏大学 A kind of detection method and device of vinegar total acid content
CN107132197B (en) * 2017-05-25 2020-12-18 江苏大学 Method and device for detecting total acid content of vinegar

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