CN1789981A - Intelligent device for quickly identifying age of Chinese rice wine based on near infrared spectrum - Google Patents

Abstract

The invention discloses an intelligent device for quickly identifying the age of yellow rice wine based on near-infrared spectroscopy. The detection table with the detection fixture and the photoelectric sensor are installed in the incubator. The left side of the detection fixture at the neck of the bottle is equipped with a near-infrared light-emitting diode light source and a filter; the right side of the detection fixture is equipped with an optical lens. The exit surface of the optical lens and The receiving surface of the optical fiber is opposite, the outgoing end of the optical fiber is connected to the input end of the photoelectric sensor, the outgoing surface of the optical filter is set coaxially opposite to the receiving surface of the optical lens through the incident light port on the detection fixture, and the detection under the optical lens A temperature sensor and a workpiece detector are sequentially installed on the side of the fixture. Near-infrared light-emitting diodes are used, which have low energy consumption, strong applicability, strong stability, and compact structure. There are no moving parts during the measurement, which solves the problem of inaccurate identification results of rice wine age caused by the rotation of the spectroscopic device and the difference in sample temperature. The invention has the advantages of fast identification of rice wine age, high precision and suitability for on-site analysis.

Description

Intelligent rice wine wine age rapid identification device based on near-infrared spectroscopy

technical field

The invention relates to an analysis technique for quickly identifying the age of rice wine, in particular to an intelligent device for rapidly identifying the age of rice wine based on near-infrared spectroscopy.

Background technique

In the past 10 years, the analysis of wine age and brewing year has received more and more attention. Sensory identification is an important means to identify the age of wine, but the accuracy of its determination is affected by many factors such as emotional factors, emotional factors, basic quality, physical health, and tasting environment, and it is a qualitative analysis. In order to obtain a more objective test method, some studies have been carried out at home and abroad:

Chemical analysis method: mainly using modern instrument analysis techniques such as high performance liquid chromatography, gas chromatography, mass spectrometry or capillary electrophoresis combined with multivariate statistical methods to conduct qualitative analysis of wine age by using the differences in the content of volatile substances, minerals, amino acids or aromatic substances in wine .

NMR method: NMR technology is used to determine the brewing year of wine by analyzing the content of ¹⁴ C and ¹⁸ O in the wine or the ratio of ² H/ ¹ H in ethanol. However, because the isotope is greatly affected by climate, place of origin, etc., the analysis results are not directly related to the age of wine.

Mid-infrared spectral analysis method: collect the mid-infrared spectrum of the wine in the mid-infrared spectrum band, and use the chemometric method to qualitatively analyze the spectrum to determine the age of the wine.

However, the existing instruments used for this type of analysis have common disadvantages: complex process of making test samples, expensive manufacturing equipment, long analysis cycle, high cost, low efficiency, and not suitable for on-site detection and analysis.

Near-infrared spectroscopy has the advantages of fast analysis speed, low cost, green analysis and suitable for online detection. With the development of near-infrared spectroscopy instruments and chemometrics, near-infrared spectroscopy analysis technology can fully realize the rapid and on-site identification of rice wine age.

At present, near-infrared spectrometers produced by some manufacturers are mainly used in the analysis of components in wine. The French INFRASCAN near-infrared quality analyzer is mainly used to test the alcohol and total sugar in wine. The FermentoStar automatic beer component analyzer of German Gerber Company can detect the alcohol concentration, original wort concentration, real concentration and apparent concentration in beer. The Austrian Alcolyzer Plus Beer automatic beer analyzer adopts the latest patented near-infrared method developed by Anton Paar, and directly measures the alcohol content of beer according to the absorption of specific near-infrared wavelengths by the sample.

Publication No. CN1480721A discloses "portable near-infrared mineral analyzer" and publication No. CN1542433A discloses "Using Near-Infrared Spectroscopy to Measure Solid Matter Component Content" and Authorized Publication No. CN 2615660Y discloses "Near-Infrared Grain Quality Analyzer" "Diffuse transmission measurement device" and the "portable near-infrared spectrometer" disclosed by the authorized publication number CN 2676188Y all adopt diffuse reflectance to analyze solid samples.

At present, there is no application of near-infrared spectral analysis technology in the detection of rice wine age, and there is no report on the rapid identification device of rice wine based on near-infrared spectral analysis technology.

Contents of the invention

The object of the present invention is to provide an intelligent yellow rice wine age identification device based on near-infrared spectrum, which can quickly and on-site identify the age of rice wine by collecting near-infrared spectrum of rice wine and processing the spectrum.

The technical solution adopted by the present invention to solve the technical problems is: it includes a detection controller, a workpiece detector, a temperature sensor, a detection fixture, an optical filter, a near-infrared light-emitting diode light source, a detection table, a temperature adjustment controller, a constant temperature box, Optical lens, first fiber holder, optical fiber, second fiber holder, photoelectric sensor. The detection fixture for inverted wine bottles is installed in the detection table, and the detection table and the photoelectric sensor are installed in the incubator. The left side of the detection fixture at the neck of the bottle is equipped with a near-infrared light-emitting diode light source and a filter, and the incident surface of the filter is installed on the The exit surface of the near-infrared light-emitting diode light source; the right side of the detection fixture is equipped with an optical lens, the exit surface of the optical lens is opposite to the receiving surface of the optical fiber, the exit end of the optical fiber is connected to the input end of the photoelectric sensor, and the exit surface of the filter passes the detection The incident light port on the fixture is coaxial with the receiving surface of the optical lens, and the side of the detection fixture below the optical lens is equipped with a temperature sensor and a workpiece detector in sequence; the workpiece detector, temperature sensor, temperature adjustment controller and photoelectric The output terminals of the sensors are respectively connected with the detection controller.

The detection controller: includes an amplifier, an analog-to-digital conversion, a single-chip microcomputer, a display unit, a keyboard and a memory. The input terminal of the amplifier is connected to the output terminal of the photoelectric sensor, the output terminal of the amplifier is connected to the input terminal of the analog-to-digital conversion, the output terminal of the analog-to-digital conversion is connected to the I/O port of the single-chip microcomputer, and the other two I/O ports of the single-chip microcomputer are respectively It is connected with the output end of the workpiece detector and temperature sensor, and the single-chip microcomputer is also connected with the display unit, keyboard, calibration model memory and temperature adjustment controller respectively. The calibration model memory is solidified with a spectrum preprocessing module and temperature correction module.

The optical filter selects the near-infrared narrow-band optical filter of the optimal wave band according to different samples, and the band filtering section of the optical filter is determined by the wine variety.

The beneficial effects of the present invention are: the near-infrared light-emitting diode (LED) light source is adopted, the energy consumption is small, the applicability is strong, and the stability is strong. The optical filter is close to the front of the near-infrared light-emitting diode light source. During the measurement process, the whole device has no moving parts, which solves the problem of the rotation of the spectroscopic device, and the whole device has a compact structure. According to different samples, the near-infrared narrow-band filter with the optimal wavelength band is selected to improve the detection speed. The temperature sensor and the temperature regulating controller collect and control the temperature, which solves the problem of inaccurate identification results of rice wine age caused by different sample temperatures. When identifying the age of bottled rice wine, the neck of the bottle is detected, which reduces the optical path and improves the detection accuracy. The detection speed can be improved by adopting special inspection fixture and workpiece detector.

Description of drawings

Fig. 1 is a schematic diagram of an intelligent rice wine wine age rapid identification device based on near-infrared spectroscopy;

Fig. 2 is a schematic diagram of a detection controller;

Fig. 3 is a modeling flow chart of the rice wine age identification model with temperature correction.

In the figure: 1. Detection controller; 2. Workpiece detector; 3. Temperature sensor; 4. Detection fixture; 5. Optical filter; 6. Near-infrared LED light source; ; 9, incubator; 10, optical lens; 11, the first optical fiber holder; 12, optical fiber; 13, the second optical fiber holder; 14, photoelectric sensor; 101, amplifier; 102, analog-to-digital conversion; 103, single-chip microcomputer; 104. Display unit; 105. Keyboard; 106. Calibration model memory.

Detailed ways

As shown in Figure 1, the present invention comprises a detection controller 1, a workpiece detector 2, a temperature sensor 3, a detection fixture 4, an optical filter 5, a near-infrared light-emitting diode light source 6, a detection table 7, a temperature adjustment controller 8, Thermostat 9, optical lens 10, first optical fiber holder 11, optical fiber 12, second optical fiber holder 13, photoelectric sensor. The detection fixture 4 for flipping wine bottles is installed in the detection table 7, and the detection table 7 and the photoelectric sensor 14 are both installed in the incubator 8. The left side of the detection fixture 4 at the neck of the bottle is equipped with a near-infrared light-emitting diode light source 6 and an optical filter. 5. The incident surface of the optical filter 5 is installed on the exit surface of the near-infrared LED light source 6; the right side of the detection fixture 4 is equipped with an optical lens 10, the exit surface of the optical lens 10 is opposite to the receiving surface of the optical fiber 12, and the exit end of the optical fiber 12 Connected to the input end of the photoelectric sensor 14, the outgoing surface of the optical filter 5 passes through the incident light port on the detection fixture 4 and is coaxially opposite to the receiving surface of the optical lens 10, and the detection fixture 4 sides below the optical lens 10 are sequentially A temperature sensor 3 and a workpiece detector 2 are installed; the output ends of the workpiece detector 2, temperature sensor 3, temperature regulation controller 8 and photoelectric sensor 14 are respectively connected to the detection controller 1.

As shown in FIG. 2 , the detection controller 1 includes an amplifier 101 , an analog-to-digital converter 102 , a single-chip microcomputer 103 , a display unit 104 , a keyboard 105 and a memory 106 . The input end of amplifier 101 is connected with the output end of photoelectric sensor 14, the output end of amplifier 101 is connected with the input end of analog-to-digital conversion 102, the output end of analog-digital conversion 102 is connected with the I/O port of single-chip microcomputer 103, the other of single-chip microcomputer 103 The two I/O ports are respectively connected with the output ends of the workpiece detector 2 and the temperature sensor 3, and the single-chip microcomputer 103 is also respectively connected with the display unit 104, the keyboard 105, the calibration model memory 106 and the temperature regulation controller 8, and the calibration A spectrum preprocessing module and a temperature correction module are solidified in the model memory 106 .

The optical filter 5 selects the near-infrared narrow-band optical filter of the optimal wave band according to different samples, and the band filtering section of the optical filter 5 is determined by the type of wine.

The workpiece detector 2 of the present invention can be selected from WD-005, WD-01, WD-02 and other sensors; the temperature sensor 3 adopts two series integrated AD590 (0 ~ 50 ℃); the temperature adjustment controller 8 can adopt KT2 temperature controller; The photoelectric sensor 14 can choose a silicon detector, an indium gallium arsenic detector or a lead sulfide detector; the amplifier 101 can use LM324, OPA11, OP27 and other types of devices; the analog-to-digital conversion 102 can use ADS7804, ADS7807, MAX1247, MAX525; Devices such as AT89S52, AT89S57 and MCS8051 can be used; the display unit 104 can adopt LCD liquid crystal displays such as HD61202 and HD61203; the wine age calculation module can adopt coprocessors such as 89C51, 80487 and 80587; DS1230, 62256 and other RAMs.

The detection temperature range of the device of the invention is 15-40°C.

The present invention illustrates concrete work process in conjunction with Fig. 1, Fig. 2, Fig. 3:

The detection temperature is set in the single-chip microcomputer 103 through the keyboard 105, and the temperature range is 15-40°C. Turn on the machine, warm up for 30 minutes, and start working after the near-infrared light-emitting diode light source 6 is stable.

The bottled rice wine to be tested is placed in the detection fixture 4 fastened on the detection platform 7 , and the workpiece detector 2 detects the signal and transmits the signal to the single chip microcomputer 103 . The temperature sensor 3 detects the temperature of the bottled rice wine to be tested and transmits it to the single-chip microcomputer 103 . The single-chip microcomputer 103 controls the temperature regulation controller 8, and the temperature regulation controller 8 controls the constant temperature box 9, reaches the preset detection temperature, and starts spectrum detection.

The light emitted by the near-infrared LED light source 6 shines on the filter 5, and the light emitted by the filter 5 is irradiated on the bottled rice wine to be tested through the incident light port on the detection fixture 4. The optical lens 10 collects the transmitted light passing through the detected part of the bottled rice wine to be tested, and maps it to the optical fiber 12 .

The optical fiber 12 transmits the optical signal to the photoelectric sensor 14. The photoelectric sensor 14 converts the optical signal into an electrical signal.

The single-chip microcomputer 103 sends the spectral digital signal and the temperature of the yellow rice wine in the bottle to be measured into the calibration model memory 106, and is calculated by the yellow rice wine age discrimination model (see Figure 3 for the modeling process) with temperature correction in the calibration model memory 106 The wine age of the bottled rice wine to be tested is obtained, and the wine age result is sent to the display unit 104 for display by the single-chip microcomputer 103.

Claims (3)

1. a kind of intelligent yellow rice wine age identification device based on near-infrared spectrum, it is characterized in that it comprises detection controller (1), workpiece detector (2), temperature sensor (3), detection fixture (4), filter light sheet (5), near-infrared light-emitting diode light source (6), detection table (7), temperature adjustment controller (8), constant temperature box (9), optical lens (10), first optical fiber holder (11), Optical fiber (12), the second optical fiber holder (13), photoelectric sensor (14); They are all installed in a constant temperature box (8), and the left side of the detection fixture (4) at the neck of the bottleneck is equipped with a near-infrared light-emitting diode light source (6) and a filter (5), and the incident surface of the filter (5) is installed on the near-infrared surface. The exit surface of the LED light source (6); the right side of the detection fixture (4) is equipped with an optical lens (10), the exit surface of the optical lens (10) is opposite to the receiving surface of the optical fiber (12), and the exit end of the optical fiber (12) Connected with the input end of the photoelectric sensor (14), the outgoing surface of the optical filter (5) is coaxially opposite to the receiving surface of the optical lens (10) through the incident light port on the detection fixture (4), and the optical lens ( 10) Temperature sensor (3) and workpiece detector (2) are sequentially installed on the side of the detection fixture (4) below; workpiece detector (2), temperature sensor (3), temperature adjustment controller (8) and photoelectric sensor The output ends of (14) are respectively connected with the detection controller (1). 2. A device for rapidly identifying the age of intelligent rice wine based on near-infrared spectroscopy according to claim 1, characterized in that the detection controller (1) includes an amplifier (101), an analog-to-digital conversion (102) , microcontroller (103), display unit (104), keyboard (105) and memory (106); the input end of amplifier (101) is connected with the output end of photoelectric sensor (14), and the output end of amplifier (101) is connected with The input end of analog-to-digital conversion (102) is connected, the output end of analog-to-digital conversion (102) is connected with the I/O port of single-chip microcomputer (103), and the other two I/O ports of single-chip microcomputer (103) are connected with workpiece detector ( 2), the output terminal of temperature sensor (3) is connected, and single-chip microcomputer (103) is also connected with display unit (104), keyboard (105), calibration model memory (106) and temperature regulation controller (8) respectively, A spectrum preprocessing module and a temperature correction module are solidified in the calibration model memory (106). 3. A device for rapidly identifying the age of intelligent yellow rice wine based on near-infrared spectroscopy according to claim 1, characterized in that: said filter (5) selects the near-infrared narrow band of the optimal band according to different samples Optical filter, the band filtering section of optical filter (5) is determined by wine kind.

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