Baijiu aging device, method and control system

Abstract

The application discloses a liquor aging device, method and control system. The device comprises a light-proof pottery jar body, a sealing cover, an ultraviolet LED lamp plate, a sealing member, an electric connection lead-out end and a temperature sensor. The ultraviolet LED lamp plate is arranged on the side of the sealing cover facing the jar, and directly emits ultraviolet light to the liquor in the pottery jar in the light-shielded state, avoiding the external ultraviolet light being blocked by the pottery jar wall. The method first acquires the ultraviolet absorption spectrum of the liquor to be treated or the same type of liquor, and combines the pre-experiment aging effect, lamp bead output efficiency, liquor light receiving area, pottery jar caliber and temperature rise to determine the wave band, arrangement position, irradiation sequence and working parameters of the deep ultraviolet LED lamp bead. Then, the ultraviolet irradiation in the jar, light-proof balance and multi-source detection are carried out. The control system extracts the aging related features according to the UV-Vis, EEM, electronic nose and volatile component data before and after the treatment, calculates the aging effect score or quality determination result, and feeds back the irradiation time, working current and irradiation mode of the subsequent batches after adjustment. The application improves the pertinence, controllability and repeatability of the ultraviolet auxiliary liquor aging treatment.

Description

Technical Field

[0001] This invention relates to the field of alcoholic beverage processing, aging treatment and quality evaluation technology, and in particular to a device, method and control system for determining the wavelength band and arrangement of LED beads based on the ultraviolet absorption spectrum of baijiu, and for aging baijiu assisted by an ultraviolet LED (Light Emitting Diode) lamp board in a light-proof ceramic jar. Background Technology

[0002] During storage, baijiu undergoes slow physicochemical changes. For example, the low-boiling-point irritating components gradually decrease, while esterification, association, redox reactions, and interactions between various trace components continue, gradually harmonizing the flavor of the liquor. Traditional natural aging mainly relies on long-term storage. Although this can create a relatively stable liquor style, it has drawbacks such as long processing cycles, large space requirements, and high batch management difficulty, making it unsuitable for quickly screening aging processes and evaluating quality.

[0003] Existing methods for accelerating aging include heating, oxygenation, ultrasound, electric fields, and light irradiation. Among these, ultraviolet (UV) light treatment offers advantages such as direct energy input, convenient parameter adjustment, and relatively simple equipment structure, and can be used to promote changes in some photosensitive components in the liquor, thereby assisting in the aging process. However, in practical applications, the effectiveness of UV treatment is affected by factors such as the wavelength of the light source, the position of the light source, the irradiation intensity, the irradiation time, the sample temperature, the container material, and the state of the liquor under light. If these factors are not uniformly controlled, inconsistencies in treatment effects can easily occur between different batches of samples.

[0004] Traditionally, baijiu (Chinese white liquor) is stored in earthenware jars or earthenware pots. Earthenware jars offer light protection, a degree of permeability, and good storage stability, simulating the actual storage environment of baijiu to some extent. However, ceramic materials themselves do not transmit ultraviolet (UV) light. If a UV light source is placed outside the earthenware jar, the UV light cannot penetrate the jar and reach the liquor inside, resulting in insufficient actual light exposure. Specifically, even with a high intensity external light source, the UV light is mainly blocked or absorbed by the earthenware jar walls, preventing the liquor from receiving effective irradiation. Therefore, it is difficult to achieve a stable and repeatable UV-assisted aging effect.

[0005] Furthermore, the absorption of baijiu samples in the ultraviolet band is not uniformly distributed. The differences in absorption peaks, shoulder peaks, and absorption intensities at different wavelengths are related to some photoresponsive components in the baijiu. If the ultraviolet LED lamp panel uses only a single wavelength or randomly selects the lamp bead wavelength, a mismatch between the irradiation wavelength and the absorption response region of the baijiu may occur. Specifically, if the selected wavelength is located in a region where the sample absorption is weak, the processing efficiency will be low; if the energy input of the short wavelength is too strong, it may cause over-reaction or flavor imbalance. Therefore, the ultraviolet lamp bead wavelength and arrangement need to be combined with the absorption spectral characteristics of baijiu, and further optimized by combining the results of preliminary experimental processing, lamp bead output efficiency, temperature rise, and the light-receiving area of ​​the baijiu liquid, rather than being set solely based on experience.

[0006] Existing devices related to photo-treatment typically focus on the arrangement of the light source, the reaction vessel, or the treatment process itself. For example, some photocatalytic or photo-treatment devices improve the photo-reaction efficiency of general reaction systems by incorporating light sources, stirring structures, or circulation structures within the reactor; some optical detection systems acquire optical signals for subsequent analysis and judgment. While these approaches can improve the efficiency of photo-reaction or optical detection processes to some extent, their primary focus is on the general reaction system or optical detection system, and they do not specifically address issues such as the lack of ultraviolet light transmission in ceramic containers used for storing baijiu (Chinese liquor), the difficulty of external light sources reaching the liquor inside the container, the mismatch between the wavelength of the LED and the absorption characteristics of baijiu, and the lack of feedback and evaluation of the aging effect after treatment.

[0007] On the other hand, existing UV-assisted aging treatments also have significant shortcomings in parameter control and effect evaluation. Regarding parameter control, the wavelength and arrangement of UV LED beads are usually selected based on experience, lacking a basis that combines this with the UV absorption characteristics of the liquor itself. This leads to a mismatch between the irradiation wavelength and the light response region of the liquor, resulting in unstable treatment efficiency. In terms of effect evaluation, the aging effect of the treated liquor mainly relies on sensory evaluation or a few physicochemical indicators, lacking a systematic evaluation method based on multi-source detection data. This makes it difficult to provide data for optimizing and adjusting irradiation parameters and to establish comparability between the results of different batches.

[0008] Existing ultraviolet aging devices mostly employ open or semi-open irradiation structures, lacking a sealed, light-proof structure between the sample container and the light source that matches the actual storage environment of baijiu. Under these circumstances, the process is easily affected by external light, air contact conditions, and temperature fluctuations. Furthermore, if the ultraviolet lamp plate is used only as an external irradiation component and cannot form a stable fit with the container lid, the distance between the lamp plate and the surface of the baijiu, the irradiation angle, and the uniformity of irradiation are difficult to maintain consistently, thus affecting the repeatability of the aging process results.

[0009] However, in the process of realizing the technical solution of this invention, the inventors of this invention discovered that the above-mentioned technology has at least the following technical problems: First, while earthenware jars offer advantages in light protection and storage, external ultraviolet light sources struggle to penetrate their walls, resulting in insufficient actual light exposure for the liquor inside. Second, existing ultraviolet irradiation structures are poorly integrated with the sealed storage environment of baijiu, making it difficult to achieve ultraviolet aging within the jar under light-protected, sealed, or near-sealed conditions. Third, the wavelength and arrangement of ultraviolet LED beads lack a basis, making it difficult to design specifically based on the ultraviolet absorption characteristics of baijiu and preliminary experimental results. Fourth, the lack of fixed structural constraints on the irradiation distance, angle, and area between the lamp plate and the liquor easily leads to uneven light exposure within the jar. Fifth, the lack of coordinated control over irradiation time, operating current, irradiation intensity, sample processing volume, irradiation mode, and temperature information during ultraviolet irradiation results in poor repeatability of different batches. Sixth, the aging effect of the treated baijiu lacks evaluation criteria based on test data, making it difficult to optimize ultraviolet aging parameters.

[0010] Therefore, it is necessary to provide a baijiu aging device, method, and control system that determines the wavelength and arrangement of ultraviolet LED beads based on the absorption spectrum of baijiu, the effect of pre-experimental aging, and the light conditions inside the jar, and can complete ultraviolet irradiation inside a light-proof ceramic jar. This system combines the ultraviolet LED lamp panel with the sealed lid of the ceramic jar, allowing direct irradiation of the baijiu inside the jar while the lid is closed. It also incorporates irradiation parameter control, temperature status acquisition, and post-processing quality evaluation to improve the pertinence, controllability, and repeatability of ultraviolet-assisted baijiu aging treatment. Summary of the Invention

[0011] This invention provides an ultraviolet-assisted aging device, method, and control system for baijiu (Chinese liquor) based on absorption spectrum regulation. It addresses existing problems in baijiu aging processes, such as the difficulty of external ultraviolet light penetrating the ceramic jar and effectively acting on the liquor inside, the lack of data on the wavelength and arrangement of ultraviolet LED beads, unstable irradiation conditions inside the jar, and the lack of data-driven evaluation of the treatment effect. The invention achieves the technical benefits of determining the lamp plate design based on the baijiu absorption spectrum and preliminary aging results, completing controllable ultraviolet aging treatment inside the light-proof ceramic jar, improving treatment repeatability, and establishing a basis for evaluating the treatment effect.

[0012] This invention first provides an ultraviolet-assisted aging device for baijiu (Chinese liquor), comprising a light-shielding ceramic jar body, a sealing lid, an ultraviolet LED lamp panel, a sealing component, an electrical connection lead-out terminal, and a temperature sensor. The light-shielding ceramic jar body is used to hold the baijiu to be processed; the sealing lid is used to cover the opening of the light-shielding ceramic jar body; the ultraviolet LED lamp panel is disposed on the side of the sealing lid facing inwards, and is used to emit ultraviolet light into the baijiu inside the light-shielding ceramic jar body when the sealing lid is closed; the ultraviolet LED lamp panel includes a circuit board, multiple deep ultraviolet LED beads, a central mounting hole, a heat-conducting layer, and a heat dissipation backplate, the multiple deep ultraviolet LED beads containing at least two different emission bands in the range of 250 nm to 300 nm and arranged in a single or multiple ring pattern; the sealing component is disposed between the sealing lid and the light-shielding ceramic jar body, and is used to improve the light-shielding and sealing properties at the lid opening; the electrical connection lead-out terminal is used to connect to external control equipment or power supply equipment; the temperature sensor is used to collect the working surface temperature of the ultraviolet LED lamp panel or the inner temperature of the sealing lid.

[0013] The core mechanical improvement of this invention lies in moving the ultraviolet LED light panel from the outside of the ceramic jar to the side of the sealed lid facing inwards. This allows the ultraviolet light source to be directly positioned above and inside the light-proof ceramic jar body when the sealed lid is closed, thus solving the problem of insufficient light exposure to the liquor inside the jar due to the ceramic material's impermeability to ultraviolet light. The sealing component further ensures the light-shielding and airtightness of the processing, making the processing environment closer to the actual storage conditions of baijiu (Chinese liquor).

[0014] This invention also provides a UV-assisted aging method for baijiu based on the aforementioned UV-assisted aging device, comprising: acquiring the UV absorption spectrum of the baijiu to be treated or a similar baijiu sample using a UV-Vis spectrophotometer; determining the emission band, arrangement position, and operating parameters of different deep UV LED beads in the UV LED light panel based on the absorption peaks, shoulder peaks, or absorption intensity distribution in the UV absorption spectrum, and in conjunction with the pre-experimental aging effect, LED output efficiency, light-receiving area of ​​the baijiu, diameter of the ceramic jar, and temperature rise; adding the baijiu to be treated into the light-proof ceramic jar body; sealing the opening of the light-proof ceramic jar body with the UV LED light panel, such that the UV LED light panel is located above the inside of the light-proof ceramic jar body and faces the liquid surface of the baijiu to be treated; and controlling the UV LED light panel to face the light-proof ceramic jar body while the sealing cover is closed. The liquor inside the ceramic jar is subjected to ultraviolet irradiation. During the irradiation process, one or more of the following information are recorded or controlled: irradiation time, operating current, irradiation intensity, sample processing volume, irradiation mode, and temperature. The temperature information includes the working surface temperature of the ultraviolet LED lamp board or the temperature inside the sealed cover, used to monitor the working status of the LED beads and determine whether the operating parameters need to be adjusted. After irradiation, the treated liquor undergoes light-shielding balancing treatment. Multi-source detection data of the liquor before and after treatment are acquired, and aging-related features are extracted from the multi-source detection data. An aging effect score is calculated based on the aging-related features, and aging treatment parameters are output based on the aging effect score. The aging treatment parameters are used to provide feedback adjustments to the irradiation time, operating current, irradiation sequence, or temperature control range of subsequent batches, thereby forming a closed-loop aging treatment process based on the detection data.

[0015] This invention also provides a UV-assisted baijiu aging control system based on the aforementioned UV-assisted baijiu aging device, comprising a spectrum acquisition module, a parameter determination module, an irradiation control module, and an evaluation feedback module; the spectrum acquisition module is used to collect the baijiu to be treated or similar baijiu samples in the range of 200 nm to 400 nm using a UV-Vis spectrophotometer. The ultraviolet absorption spectrum data in the nm band; the parameter determination module is used to identify and fit the peaks of the ultraviolet absorption spectrum, and, in conjunction with the pre-experimental aging effect, lamp output efficiency, light-receiving area of ​​the liquor, diameter of the ceramic jar and temperature rise, output the emission band, arrangement position and operating current control parameters of each group of deep ultraviolet LEDs in the ultraviolet LED lamp board; the irradiation control module is used to drive the deep ultraviolet LEDs to work through a constant current drive circuit or pulse width modulation (PWM) circuit according to the control parameters, and adjust the operating current, irradiation time or irradiation mode according to the temperature signal collected by the temperature sensor; the evaluation feedback module is used to preprocess and extract features from the multi-source detection data of the liquor before and after treatment, score the aging effect according to the calculation, and output the adjustment instructions for the irradiation time, operating current and irradiation mode of the next batch to the irradiation control module accordingly.

[0016] The present invention provides one or more technical solutions, which have at least the following technical effects or advantages: First, due to the structure combining the light-proof ceramic jar body with the sealed lid containing the built-in ultraviolet LED lamp panel, ultraviolet irradiation can be carried out inside the light-proof ceramic jar, effectively solving the problem that external ultraviolet light is difficult to penetrate the ceramic jar and act on the liquor, thereby improving the effectiveness of the ultraviolet aging treatment inside the jar; Second, because the ultraviolet LED lamp panel is set on the side of the sealed lid facing the inside of the jar, the relative position between the lamp panel and the liquor remains stable after the lid is closed, effectively reducing the impact of changes in irradiation distance and irradiation angle, thereby improving the consistency of treatment conditions for different batches of liquor; Third, because the wavelength band, arrangement position or working parameters of the lamp beads are determined according to factors such as the ultraviolet absorption spectrum of the liquor, the pre-experimental aging effect, the output efficiency of the lamp beads and the light-receiving area, the ultraviolet irradiation wavelength band can be matched with the light response of the liquor sample. The system matches the region with the actual treatment effect, effectively solving the problem of unstable treatment efficiency caused by random selection of ultraviolet bands, thereby improving the targeting of ultraviolet-assisted aging treatment; fourth, by recording or controlling the information on irradiation time, working current, irradiation intensity, sample treatment volume, irradiation mode and temperature, the ultraviolet irradiation process can be quantitatively described, effectively solving the problem that traditional aging treatment conditions are difficult to repeat, thereby improving the controllability and reproducibility of the aging treatment process; fifth, by acquiring the ultraviolet-visible absorption, three-dimensional fluorescence, electronic nose and volatile component detection data of the liquor before and after treatment, and combining the data with blank control samples, naturally stored samples, target aging samples or historical detection data to calculate the aging effect score, the treatment effect can be evaluated through detection data, effectively reducing the problem of relying solely on experience judgment, and thus providing data basis for optimizing aging parameters. Attached Figure Description

[0017] Figure 1 A schematic cross-sectional view of the light-proof ceramic jar with a sealed cover containing a built-in ultraviolet LED lamp panel provided by the present invention. Figure 2 A schematic diagram of the sealing cap and ultraviolet LED lamp board structure provided by the present invention; Figure 3 Flowchart of the UV-assisted aging method for Baijiu based on absorption spectrum modulation provided by the present invention; Figure 4 The aging evaluation and feedback control block diagram provided by the present invention shows the closed-loop process of outputting aging treatment parameters and feeding back to the irradiation control process after feature extraction and evaluation feedback of the detection data of the liquor samples before and after ultraviolet aging. Figure 5 This is a block diagram of the ultraviolet-assisted aging control system provided by the present invention; Figure 6 This is a schematic diagram supporting the timing and evaluation data for ultraviolet LED lamp panel irradiation control provided by the present invention.

[0018] Explanation of reference numerals in the attached drawings: 100, Light-proof ceramic jar body; 101, Wine liquid; 102, Sealing cap; 103, Ultraviolet LED lamp panel; 104, Deep ultraviolet LED beads; 105, Irradiation direction; 106, Sealing component; 201, Circuit board; 202, Center mounting hole; 203, Electrical connection lead-out terminal; 204, Heat-conducting layer; 205, Heat dissipation backplate; 301, Spectrum acquisition module; 302, Parameter determination module; 303, Irradiation control module; 304, Data preprocessing and feature extraction module (… Figure 5 (abbreviated as feature extraction module); 305, evaluation feedback module; 306, external control equipment or power supply equipment ( Figure 5 (abbreviated as control / power supply module); 307, temperature sensor; 401, continuous irradiation mode; 402, intermittent irradiation mode; 403, phased irradiation mode; Figure 3 S1 to S9 correspond to the nine method steps in claim 5, respectively; Figure 4 In the diagram, A1, A2-1, A2-2, A2-3, A2-4, A3, A4, A5, and A6 represent sample detection, absorption spectroscopy, three-dimensional fluorescence, electronic nose, volatile component detection, feature extraction, performance scoring, parameter output, and feedback adjustment, respectively. Detailed Implementation

[0019] The technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the following embodiments are only used to illustrate the technical solutions of this invention and are not intended to limit the scope of protection of this invention. All equivalent substitutions, conventional changes, or combinations made under the technical concept of this invention should be included within the scope of protection of this invention.

[0020] This invention provides a UV-assisted aging device, method, and control system for baijiu (Chinese liquor) based on absorption spectrum regulation. This addresses the problems in existing technologies, such as the difficulty of external UV light penetrating the ceramic jar and effectively acting on the liquor inside, the lack of data-driven evaluation of the UV LED light wavelength and arrangement, unstable UV irradiation conditions, and the lack of data-driven evaluation of the treatment effect. By first providing an aging device combining a light-proof ceramic jar body 100, a sealing lid 102, and a UV LED light panel 103, and then determining the wavelength, arrangement, and operating parameters of the deep UV LED light beads 104 based on the UV absorption spectrum of baijiu and preliminary aging effects, the baijiu receives UV irradiation within the sealed ceramic jar, achieving UV-assisted aging treatment with spectral basis, a light-proof and sealed environment, and data-driven evaluation.

[0021] The technical solution in this invention aims to solve the above problems, and the overall approach is as follows: First, a UV-assisted baijiu aging device is constructed, consisting of a light-proof ceramic jar body 100, a sealing lid 102, a UV LED lamp panel 103, a sealing component 106, an electrical connection lead-out terminal 203, and a temperature sensor 307. The UV LED lamp panel 103 is positioned above and inside the light-proof ceramic jar body 100 when the sealing lid 102 is closed. Then, the UV absorption spectrum of the baijiu to be treated or a similar baijiu sample is detected to determine its main absorption peaks, shoulder peaks, and absorption intensity distribution. This is combined with preliminary experimental aging effects, lamp output efficiency, and baijiu liquid... Different wavelengths of deep ultraviolet LED beads 104 were selected based on the light-receiving area, the diameter of the ceramic jar, and the temperature rise. Their arrangement position, operating current, and irradiation mode on the ultraviolet LED lamp panel 103 were determined. Then, the liquor was added into the light-proof ceramic jar body 100, and the sealing lid 102 was closed. Under the light-proof state, ultraviolet light was directly irradiated into the liquor 101 inside the jar. Finally, the aging effect score or quality judgment result was calculated based on the test data of the liquor before and after the treatment, and the output aging treatment parameters were fed back to the irradiation control process of subsequent batches.

[0022] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] Example 1 Please refer to Figure 1 The present invention provides an ultraviolet-assisted aging device for baijiu (Chinese liquor), including a light-proof ceramic jar body 100, a sealing cap 102, an ultraviolet LED lamp panel 103, a sealing component 106, an electrical connection lead-out terminal 203, and a temperature sensor 307.

[0024] The light-proof ceramic jar body 100 is used to hold the liquor to be processed. The light-proof ceramic jar body 100 can be a ceramic jar, earthenware jar, or other earthenware container with light-proof properties. The light-proof ceramic jar body 100 is made of opaque or low-transmittance ceramic material, making it difficult for external ultraviolet light to penetrate the jar wall and enter the jar. The mouth of the light-proof ceramic jar body 100 is designed with an opening structure that can mate with the sealing cap 102.

[0025] The sealing cap 102 is used to cover the opening of the light-proof ceramic jar body 100. The sealing cap 102 can be a ceramic cap, a composite cap, or a cap with light-proof properties. An ultraviolet LED light panel 103 is provided on the side of the sealing cap 102 facing the inside of the jar, so that after the sealing cap 102 is closed, the ultraviolet LED light panel 103 is located inside and above the light-proof ceramic jar body 100, and is positioned facing the wine 101.

[0026] The ultraviolet LED light panel 103 is used to emit ultraviolet light onto the liquid 101 inside the light-proof ceramic jar body 100. The ultraviolet LED light panel 103 includes multiple deep ultraviolet LED beads 104. The multiple deep ultraviolet LED beads 104 can be arranged in a ring or in a multi-ring array. The light emission direction of the deep ultraviolet LED beads 104 is towards the liquid 101, so that the ultraviolet light enters the space inside the jar along the irradiation direction 105 and acts on the liquid 101.

[0027] A sealing member 106 is disposed between the sealing cap 102 and the light-proof ceramic jar body 100. The sealing member 106 may be an annular sealing ring, a UV-resistant sealing gasket, a stepped cap structure, or a snap-fit ​​sealing structure. The sealing member 106 is used to reduce light leakage and external air disturbance at the cap, allowing the wine 101 to receive ultraviolet radiation in a light-proof and relatively sealed environment.

[0028] Temperature sensor 307 can be located on the outside of the sealing cover 102 near the heat-conducting layer 204, or on the inside of the sealing cover 102 but isolated from the liquid 101, to collect the heat accumulation state of the ultraviolet LED light panel 103 during operation. The temperature sensor 307 can be a thermistor, thermocouple, PT100 platinum resistance thermometer, or infrared temperature measurement module. The temperature signal can be led to an external control device or power supply device 306 via a wire through the electrical connection lead-out terminal 203.

[0029] like Figure 1 As shown, during use, the liquor to be treated is first added into the light-proof ceramic jar body 100, so that the liquor 101 reaches the set volume or set liquid level. Then, the sealing cap 102 is placed on the opening of the light-proof ceramic jar body 100, so that the sealing member 106 is located between the sealing cap 102 and the light-proof ceramic jar body 100, and the ultraviolet LED lamp panel 103 is positioned above the inside of the jar. At this time, the light-proof ceramic jar body 100 and the sealing cap 102 together form a light-proof treatment space, and a fixed irradiation distance is formed between the ultraviolet LED lamp panel 103 and the liquor 101.

[0030] When the ultraviolet LED lamp panel 103 is powered on, the deep ultraviolet LED beads 104 emit ultraviolet light downwards along the irradiation direction 105. Since the ultraviolet LED lamp panel 103 is located on the side of the sealing cover 102 facing the inside of the jar, the ultraviolet light enters directly into the interior of the light-proof ceramic jar body 100 when the cover is closed, without needing to pass through the ceramic jar wall, and thus can effectively act on the wine liquid 101.

[0031] The technical solution of the present invention described above has at least the following technical effects: Since the ultraviolet LED lamp panel 103 is combined with the sealing cover 102, the ultraviolet light source is located inside the jar when the cover is closed, which effectively solves the problem that the external ultraviolet light source cannot penetrate the jar wall; Since the sealing cover 102, the sealing component 106 and the light-proof jar body 100 together form a light-shielding and relatively sealed structure, the liquor can be aged with ultraviolet assistance in an environment that is closer to actual light-proof storage; Since the ultraviolet LED lamp panel 103 can be connected to an external control device or power supply device 306 through the electrical connection lead-out terminal 203, the irradiation time, working current and intermittent irradiation cycle can be adjusted and recorded, thereby improving the controllability and repeatability of the ultraviolet-assisted aging process.

[0032] Example 2 Please refer to Figure 2 The sealing cover 102 and the ultraviolet LED lamp board 103 in this invention can be configured as an integral structure or as a detachable connection structure.

[0033] In one embodiment, the ultraviolet LED lamp board 103 is fixed to the side of the sealing cap 102 facing the inside of the can. The ultraviolet LED lamp board 103 includes a circuit board 201, a plurality of deep ultraviolet LED beads 104, a central mounting hole 202, an electrical connection lead-out terminal 203, a heat-conducting layer 204, and a heat dissipation backplate 205.

[0034] The circuit board 201 is used to mount deep ultraviolet LED beads 104 and form electrical connection lines. Multiple deep ultraviolet LED beads 104 are arranged at intervals around the central area of ​​the circuit board 201. The central mounting hole 202 can be used to mount fasteners, lead structures, or auxiliary positioning structures. The electrical connection lead-out terminal 203 is used to electrically connect the ultraviolet LED lamp board 103 to external control equipment or power supply equipment 306; the external control equipment can supply power to each group of deep ultraviolet LED beads 104 independently or in groups through a constant current drive circuit, realizing individual adjustment of the operating current of each group of beads; irradiation time control is achieved through a timing circuit, intermittent irradiation is achieved through periodic on / off control, and staged irradiation is achieved by sequentially activating different band groups of beads. A heat-conducting layer 204 is disposed between the circuit board 201 and the heat dissipation backplate 205 to transfer the heat generated by the deep ultraviolet LED beads 104 during operation to the heat dissipation backplate 205. The heat dissipation backplate 205 can be set inside the sealing cover 102 or on the side of the sealing cover 102 facing away from the inside of the tank, in order to improve the stability of the ultraviolet LED lamp board 103 during long-term operation.

[0035] In another embodiment, the ultraviolet LED lamp panel 103 is detachably connected to the sealing cap 102. The sealing cap 102 has a mounting groove or snap-fit ​​structure on the side facing inwards from the jar, and the ultraviolet LED lamp panel 103 can be fixed in the mounting groove via threaded connection, snap-fit ​​connection, compression connection, or plug-in connection. With this structure, different specifications of ultraviolet LED lamp panels 103 can be replaced according to different liquor processing volumes, different ceramic jar diameters, or different irradiation requirements.

[0036] In another embodiment, the number of deep ultraviolet LED beads 104 can be six, or it can be set to four, eight, twelve or more depending on the diameter of the earthenware jar and the surface area of ​​the wine. The deep ultraviolet LED beads 104 can be arranged in a single ring or in multiple rings. By adjusting the number and arrangement of the deep ultraviolet LED beads 104, the uniformity of light exposure on the surface of the wine 101 inside the jar can be improved.

[0037] Example 3 Please refer to Figure 2 and Figure 3 The present invention provides an implementation method for determining the wavelength band and arrangement of deep ultraviolet LED beads 104 in ultraviolet LED lamp board 103 based on the absorption spectrum of baijiu.

[0038] First, the ultraviolet absorption spectrum of the liquor to be processed or a similar liquor sample is obtained. The ultraviolet absorption spectrum can be obtained using a UV-Vis spectrophotometer, with a detection range of 200 nm to 400 nm, or a subset of this range can be selected as needed. After obtaining the absorption spectrum, baseline correction, smoothing, peak identification, or peak fitting are performed to obtain the absorption peaks, shoulder peaks, and absorption intensity distribution of the liquor sample at different wavelengths.

[0039] In one implementation, the strong absorption region of the baijiu sample in the 280 nm to 300 nm range can be used as a candidate region for the main irradiation band; the shoulder peak or secondary absorption peak in the 270 nm to 280 nm range can be used as a candidate region for the compensation irradiation band; and the low absorption region or short-wavelength region in the 250 nm to 270 nm range can be used as a candidate region for the low-dose adjustment band. It should be noted that the ultraviolet absorption spectrum of baijiu is used to provide an initial basis for the selection of the LED wavelength, but not the sole basis. In actual design, the LED arrangement and operating parameters can be further adjusted by combining the output power, photoelectric efficiency, heat accumulation, ceramic jar diameter, liquor surface area, and aging effect scores obtained from preliminary experiments for different wavelength LEDs.

[0040] In different implementations, the ultraviolet LED light panel 103 can adopt various LED bead arrangement schemes. The first arrangement scheme is a single-ring ring arrangement, suitable for small-volume liquor samples or small-diameter ceramic jars; the second arrangement scheme is an inner and outer double-ring arrangement, with the inner ring LED beads used to illuminate the central area of ​​the liquor, and the outer ring LED beads used to compensate for the light intensity received by the area near the inner wall of the ceramic jar; the third arrangement scheme is a combination of central LED beads and circumferential LED beads, with the central LED beads corresponding to the main irradiation band, and the circumferential LED beads corresponding to the compensation irradiation band or low-dose adjustment band; the fourth arrangement scheme is a zoned array arrangement, with LED beads in different areas corresponding to different irradiation bands or different operating currents to adapt to different light-receiving areas of liquor and ceramic jar diameters.

[0041] In one specific implementation, a preliminary experimental treatment of the same batch of baijiu samples is first conducted using ultraviolet LED lamp panels 103 with different wavelength combinations. This yields ultraviolet-visible absorption data, three-dimensional fluorescence data, electronic nose response data, or volatile component detection data before and after treatment, and an aging effect score is calculated. Wavelength combinations with high aging effect scores and low temperature rises are identified as candidate wavelengths and operating parameters for subsequent batch treatments. For wavelength combinations that result in excessively high temperature rises or flavor deviations from the target aging sample, the operating current of the LED beads in that wavelength is reduced, the irradiation time is shortened, or intermittent irradiation is adjusted.

[0042] Example 4 Please refer to Figure 1 and Figure 3 The present invention provides an aging method based on the above-mentioned ultraviolet-assisted aging device for baijiu.

[0043] First, the ultraviolet absorption spectrum of the liquor to be processed or a similar liquor sample is obtained. Based on the absorption spectrum, the pre-experimental aging effect, the output efficiency of the LED beads, the light-receiving area of ​​the liquor, the diameter of the ceramic jar and the temperature rise, the emission band, arrangement position and working parameters of different deep ultraviolet LED beads 104 in the ultraviolet LED light board 103 are determined.

[0044] Then, the liquor to be treated is added into the light-proof ceramic jar body 100. The light-proof ceramic jar body 100 can be made of ceramic material and is used to hold the liquor to be treated. The light-proof ceramic jar body 100 has opaque or low light transmittance characteristics, which can reduce the influence of external light on the liquor 101. After the liquor to be treated is added into the light-proof ceramic jar body 100, it should be confirmed that the distance between the liquor surface and the ultraviolet LED lamp panel 103 is within a preset range to ensure uniform irradiation. The preset distance can be determined according to the processing volume, the diameter of the ceramic jar, the emission angle of the ultraviolet LED lamp panel 103, and the irradiation intensity.

[0045] Subsequently, the sealing cap 102, equipped with the ultraviolet LED light panel 103, is placed over the opening of the light-proof ceramic jar body 100. The ultraviolet LED light panel 103 is positioned on the side of the sealing cap 102 facing inwards. After the sealing cap 102 is placed over the opening of the light-proof ceramic jar body 100, the ultraviolet LED light panel 103 is positioned above the inside of the light-proof ceramic jar body 100 and faces the liquid 101. A sealing member 106 may be provided between the sealing cap 102 and the light-proof ceramic jar body 100. The sealing member 106 may be a sealing ring, a sealing gasket, a stepped cap structure, or a combination thereof, used to improve the light-shielding and sealing properties of the cap.

[0046] Then, the ultraviolet irradiation parameters are set via an external control device or power supply device 306. These parameters include one or more of the following: irradiation time, operating current, irradiation intensity, sample processing volume, irradiation mode, and temperature information. The temperature information includes the working surface temperature of the ultraviolet LED lamp board or the inner temperature of the sealed cover. The temperature control range serves as the basis for parameter adjustment, determining whether to reduce the operating current, pause irradiation, or switch to an intermittent irradiation mode. The irradiation mode can be continuous irradiation, intermittent irradiation, or staged irradiation. The operating current controls the output intensity of different deep ultraviolet LED beads 104 in the ultraviolet LED lamp board 103. The irradiation time controls the duration of ultraviolet treatment of the liquor. The external control device or power supply device 306 establishes an electrical connection with the ultraviolet LED lamp board 103 via the electrical connection lead-out terminal 203 and outputs a set current to the deep ultraviolet LED beads 104 via a constant current drive circuit. Irradiation time control is achieved through a timing module, and intermittent irradiation is achieved through periodic on / off control.

[0047] With the sealing cap 102 closed, the ultraviolet LED light panel 103 is activated to irradiate the wine 101 inside the light-proof ceramic jar body 100 with ultraviolet light. Since the ultraviolet LED light panel 103 is located inside the jar, the ultraviolet light does not need to penetrate the jar wall of the light-proof ceramic jar body 100, but acts directly on the wine 101 inside the jar, thus avoiding the problem of external ultraviolet light being blocked by the ceramic jar wall.

[0048] During irradiation, the temperature sensor 307 is preferentially positioned on the outside of the sealing cover 102 near the heat-conducting layer 204 to collect real-time data on the heat accumulation status of the ultraviolet LED lamp board 103 during operation. The temperature signal is transmitted to an external control device via a wire and an electrical connection lead-out terminal 203. The external control device reads the temperature value according to a set sampling period, compares it with a set threshold, and outputs an adjustment command. The temperature threshold can be preset according to the volume of liquor being processed and the rated power of the LED beads, generally not exceeding 40°C, to avoid the temperature rise affecting the volatile components of the liquor. When the temperature exceeds the set threshold, the operating current can be reduced, irradiation can be paused, or the irradiation mode can be switched to intermittent irradiation to reduce the impact of heat accumulation on the processing results of the liquor 101.

[0049] After irradiation, the treated liquor undergoes a light-shielding balancing treatment. Specifically, after ultraviolet irradiation, the ceramic jar 100 is kept closed or in a light-shielding state, allowing the treated liquor to stand for a preset time under light-shielding conditions. This light-shielding balancing treatment is used to stabilize the transient changes caused by short-term ultraviolet irradiation and reduce the impact of short-term fluctuations on the test results.

[0050] In a specific implementation example, a light-proof ceramic jar with a diameter of 200 mm and a volume of 5 L is selected. 3 L of the liquor to be treated is added, with the distance between the liquor surface and the ultraviolet LED lamp panel 103 approximately 80 mm. The ultraviolet LED lamp panel 103 employs a double-ring arrangement, with the inner ring containing LEDs in the 280 nm to 290 nm wavelength range, and the outer ring containing LEDs in the 270 nm to 280 nm and 290 nm to 300 nm wavelength ranges. The operating current can be set to 100 mA to 150 mA, the irradiation time can be set to 30 min, and the intermittent irradiation cycle can be set to 10 min of irradiation followed by a 2 min pause. During irradiation, the temperature detected by the temperature sensor 307 on the outside of the sealing cap 102 is controlled below 40°C. The above parameters are merely examples; those skilled in the art can adjust them according to the type of liquor sample, the processing volume, and the target aging degree.

[0051] Example 5 Please refer to Figure 4 The present invention also provides a method for aging evaluation and feedback control.

[0052] In this embodiment, untreated liquor can be set as a blank control sample, naturally stored liquor or target aged sample can be set as a reference sample, and ultraviolet-treated sample can be set as the sample to be evaluated. The above samples are tested respectively to obtain at least one of ultraviolet-visible absorption (UV-Vis) data, three-dimensional fluorescence (EEM, excitation-emission matrix) data, electronic nose response data, and volatile component detection data.

[0053] The above-mentioned detection data are preprocessed. The preprocessing includes one or more of the following: baseline correction, noise reduction, normalization, peak identification, peak area calculation, fluorescence region integration, response value extraction, or feature selection. After preprocessing, aging-related features are extracted, and an aging effect score is calculated based on these features.

[0054] In a specific scoring method, at least two types of detection features are selected to form a feature set, including at least two of the following: absorption peak intensity or peak area change, fluorescence region integral or fluorescence intensity ratio, electronic nose response distance, relative content of esters, relative content of aldehydes and ketones, and the ratio of esters to aldehydes and ketones. For the first type of detection feature, normalization can be performed using , where is the feature value of the UV-treated sample, is the feature value of the target aged sample or historical target data, is the feature value of the blank control sample, and is a constant used to avoid the denominator being zero; when less than 0, it is taken as 0, and when greater than 1, it is taken as 1.

[0055] In one implementation, the aging effect score is calculated as follows: where is the weight of the type-i detection feature, and . The weights can be determined from pre-experimental data, historical detection data, or the distance variation between each detection feature and the target aging sample. For example, the weights of UV-Vis absorption features, three-dimensional fluorescence features, electronic nose response features, and volatile component features can each be set to a weight of 0.25, and the comprehensive aging effect score can be calculated based on the normalization result. The above exemplary values ​​are only used to illustrate the feasibility of the algorithm and do not constitute a limitation on the scope of protection.

[0056] In another implementation, a quality assessment model can be established. Taking principal component analysis as an example, the UV-Vis absorption peak intensity, the three-dimensional fluorescence intensity ratio, the electronic nose response distance, and the ratio of esters to aldehydes and ketones can be used to construct N-dimensional input features. The mean centering and variance normalization processes are performed on m blank control samples and k target aging samples. The scores of the first two principal components are calculated, and the geometric center of the target aging sample in the space of the first two principal components is used as a reference point. The distance from the UV-treated sample to this reference point is normalized and used as the aging assessment index; the smaller the distance, the closer the treated sample is to the target aging state.

[0057] In the specific operation process, the following comparison groups can be set up: a blank control group, which does not receive ultraviolet irradiation but only undergoes equal-duration light-shielding static treatment; a randomized band control group, which is irradiated with a randomly selected single ultraviolet band; and a spectral control experimental group, which determines the multi-band combination and irradiation parameters based on the ultraviolet absorption spectrum of the liquor, the preliminary aging effect, and the temperature rise. After the treatment is completed and the light-shielding equilibrium is achieved, the detection data of the three groups of samples are collected respectively, and the absorption peak intensity change rate, fluorescence region integral change rate, electronic nose response distance, relative content change of ester substances, and aging effect score are used as evaluation indicators.

[0058] After generating the measured data, the detection results of the blank control group, the random band control group, and the spectral control experimental group can be compared. The above scoring data are exemplary experimental results conducted using a certain light-aroma baijiu (53% vol alcohol content, processing volume 3 L) as a sample in a light-proof ceramic jar with a diameter of 200 mm and a volume of 5 L, according to the parameters described in Example 4 (n=3 per group, e.g., ...). Figure 6 (As shown). By Figure 6 It can be seen that the average score of the aging effect in the spectral-controlled experimental group (81.4 points) was higher than that in the random band control group (62.2 points) and the blank control group (42.5 points). Furthermore, the score dispersion in the spectral-controlled experimental group was lower than that in the random band control group, indicating that the design of the lamp bead parameters based on absorption spectral control can improve the treatment's specificity and repeatability. Specific score values ​​vary depending on the type of liquor, treatment volume, and irradiation parameters. Those skilled in the art can adjust these values ​​according to the actual treatment object using this method.

[0059] Based on the aging effect score or quality assessment results, the current irradiation time, operating current, irradiation sequence, irradiation mode, and processing volume can be output as optional aging treatment parameters. If the aging effect score is below the target range, suggestions to extend the irradiation time, adjust the operating current, or change the irradiation mode will be output; if certain detection characteristics exceed the set threshold, suggestions to reduce the operating current, shorten the irradiation time, or increase the intermittent irradiation cycle will be output.

[0060] Example 6 Please refer to Figure 5 The present invention also provides an ultraviolet-assisted aging control system for baijiu (Chinese liquor). This control system can be configured as an external control device or a computer processing system, or it can be integrated with a power supply device. The control system includes a spectrum acquisition module 301, a parameter determination module 302, an irradiation control module 303, a data preprocessing and feature extraction module 304, an evaluation feedback module 305, an external control device or power supply device 306, and a temperature sensor 307.

[0061] The spectrum acquisition module 301 is used to acquire the ultraviolet absorption spectrum of the liquor to be processed or a similar liquor sample. The parameter determination module 302 is used to determine the emission band, arrangement position or operating parameters of different deep ultraviolet LED beads 104 based on the absorption peak, shoulder peak or absorption intensity distribution, and in combination with the pre-experiment aging effect, LED output efficiency, light-receiving area of ​​the liquor, diameter of the ceramic jar or temperature rise.

[0062] The irradiation control module 303 is used to control the operating current, irradiation time, irradiation sequence, and irradiation mode of the ultraviolet LED lamp board 103 through an external control device or power supply device 306. The external control device or power supply device 306 can adjust the operating current of the deep ultraviolet LED beads 104 through a constant current drive circuit or PWM modulation, adjust the irradiation time and intermittent irradiation period through a timing control method, and sequentially start different band LED bead groups through a group control method.

[0063] Temperature sensor 307 is used to collect temperature changes in the working area of ​​the ultraviolet LED lamp panel 103. The temperature signal can be transmitted to an external control device or power supply device 306 via electrical connection lead 203. Based on the comparison result between the temperature signal and a set threshold, the external control device or power supply device 306 outputs control commands to reduce the operating current, pause irradiation, or switch to intermittent irradiation mode.

[0064] The data preprocessing and feature extraction module 304 is used to perform baseline correction, noise reduction, normalization, peak area calculation, regional integration, or feature screening on the detection data of the liquor before and after processing. The evaluation feedback module 305 is used to calculate the aging effect score or establish a quality judgment model based on aging-related characteristics, and feed the quality judgment results back to the irradiation control module 303 to adjust the irradiation time, working current, irradiation sequence, or temperature control range for subsequent batches.

[0065] Please refer to Figure 6 In one embodiment, the irradiation control mode includes a continuous irradiation mode 401, an intermittent irradiation mode 402, and a phased irradiation mode 403. In the continuous irradiation mode 401, the ultraviolet LED lamp panel 103 remains powered on for a set time; in the intermittent irradiation mode 402, the ultraviolet LED lamp panel 103 operates periodically according to a set on and off time; in the phased irradiation mode 403, deep ultraviolet LED beads 104 with different emission wavelengths are activated sequentially in a set order to achieve a combination of main irradiation wavelength, compensation irradiation wavelength, and low-dose adjustment wavelength.

[0066] Other implementation methods Without departing from the technical concept of this invention, the shape, size, wall thickness, and mouth diameter of the light-shielding ceramic jar body 100 are as follows: The size can be adjusted according to the volume of liquor being processed. The material of the sealing cap 102, the sealing method, and the structure of the sealing component 106 can also be adjusted. Adjustments can be made according to actual needs. The quantity, arrangement, and operating voltage of the deep ultraviolet LED beads 104 in the ultraviolet LED light board 103 can be adjusted accordingly. The flow and irradiation modes can also be adjusted according to different types of baijiu, processing volume, and target aging degree. Those skilled in the art should understand that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. This invention is made in accordance with the spirit and principles of this invention. Any modifications, equivalent substitutions, improvements, or combinations made to this invention within the spirit and principles of this invention shall be deemed invalid. It should be included within the scope of protection of this invention.

Claims

1. A device for aging baijiu (Chinese liquor), characterized in that, include: Light-proof ceramic jar body: made of opaque or low-transmittance ceramic material, used to hold the liquor to be processed; Sealing cap: used to cover the mouth of the light-proof ceramic jar body; Ultraviolet LED lamp board: disposed on the side of the sealing cover facing the interior of the light-proof ceramic jar, used to emit ultraviolet light into the liquor inside the light-proof ceramic jar when the sealing cover is closed; the ultraviolet LED lamp board includes a circuit board, multiple deep ultraviolet LED beads, a central mounting hole, a heat-conducting layer and a heat dissipation back plate, the multiple deep ultraviolet LED beads include at least two different emission bands in the range of 250 nm to 300 nm, and are arranged in a single or multiple ring around the central area of ​​the circuit board, and the heat-conducting layer is disposed between the circuit board and the heat dissipation back plate; Sealing component: disposed between the sealing cap and the light-proof ceramic jar body, for forming a light-proof sealing structure; Electrical connection lead-out terminal: electrically connected to the ultraviolet LED lamp board, and used for electrical connection to external control equipment or power supply equipment. The external control equipment or power supply equipment is connected to the ultraviolet LED lamp board through a constant current drive circuit, pulse width modulation (PWM) circuit or timing control circuit to realize the power supply and operation parameter adjustment of the ultraviolet LED lamp board; Temperature sensor: Located on the outside of the sealing cover or near the heat-conducting layer, used to collect temperature changes of the ultraviolet LED panel during operation and transmit the temperature signal to the external control device.

2. The ultraviolet-assisted aging device for baijiu as described in claim 1, characterized in that, The ultraviolet LED lamp board is fixed to the side of the sealing cover facing the inside of the light-proof ceramic jar, or is detachably connected to the sealing cover; the side of the sealing cover facing the inside of the jar is provided with an installation groove, a snap-fit ​​structure or a pressing structure for fixing the ultraviolet LED lamp board.

3. The ultraviolet-assisted aging device for baijiu as described in claim 1 or 2, characterized in that, The plurality of deep ultraviolet LED beads include at least two emission bands selected from 250 nm to 260 nm, 260 nm to 270 nm, 270 nm to 280 nm, 280 nm to 290 nm, and 290 nm to 300 nm; the arrangement of the plurality of deep ultraviolet LED beads is selected from any one or more of the following: single-ring arrangement, inner and outer double-ring arrangement, central LED bead and circumferential LED bead combination arrangement, and partitioned array arrangement.

4. The ultraviolet-assisted aging device for baijiu as described in claim 1, characterized in that, The light-proof ceramic jar body is a thick-walled ceramic jar, and the mouth of the thick-walled ceramic jar is provided with a step, groove or mating edge for supporting the sealing cap; the sealing component includes any one or more of the following: annular sealing ring, UV-resistant sealing gasket, stepped cap structure or snap-fit ​​sealing structure; the temperature sensor is a thermistor, thermocouple, PT100 platinum resistance thermometer or infrared temperature measurement module.

5. A method for aging baijiu (Chinese liquor) using ultraviolet-assisted aging apparatus according to any one of claims 1 to 4, characterized in that, include: S1: Obtain the ultraviolet absorption spectrum of the liquor to be processed or a similar liquor sample; S2: Based on the absorption peaks, shoulder peaks, or absorption intensity distribution in the ultraviolet absorption spectrum, and in combination with the pre-experimental aging effect, LED output efficiency, light-receiving area of ​​the wine, diameter of the ceramic jar, and temperature rise, determine the emission band, arrangement position, and operating parameters of different deep ultraviolet LEDs in the ultraviolet LED light panel. S3: Add the liquor to be processed into the light-proof ceramic jar, and ensure that the distance between the liquor surface and the ultraviolet LED light panel is within the preset range; S4: Cover the opening of the light-proof ceramic jar body with the sealing cover containing the ultraviolet LED lamp panel, so that the ultraviolet LED lamp panel is located inside the upper part of the light-proof ceramic jar body, and the light-emitting surface of the ultraviolet LED lamp panel faces the liquor to be processed. S5: With the sealing cap closed, activate the ultraviolet LED lamp panel so that ultraviolet light does not penetrate the side wall of the light-proof ceramic jar body into the liquor, but is directly irradiated into the liquor in the jar by the ultraviolet LED lamp panel set inside the sealing cap. S6: During the irradiation process, record or control one or more of the following: irradiation time, working current, irradiation intensity, sample processing volume, irradiation mode, and temperature information; the temperature information includes the working surface temperature of the ultraviolet LED lamp board or the temperature inside the sealed cover. S7: After irradiation, the treated liquor is placed in the light-proof ceramic jar or other light-proof container for light-proof balancing treatment. S8: Obtain multi-source detection data of the liquor before and after processing, and preprocess the multi-source detection data and extract aging-related features; S9: Calculate the aging effect score based on the aging-related characteristics, and output the aging treatment parameters of the liquor based on the aging effect score; the aging treatment parameters are used to provide feedback adjustment for the irradiation time, working current, irradiation sequence or temperature control range of subsequent batches.

6. The ultraviolet-assisted aging method for baijiu as described in claim 5, characterized in that, The ultraviolet absorption spectrum is obtained by detecting the baijiu to be treated or similar baijiu samples using an ultraviolet-visible spectrophotometer, with the detection band including 200 nm to 400 nm; S2 includes: performing baseline correction, smoothing, peak identification or peak fitting on the ultraviolet absorption spectrum to obtain the peak position, peak intensity or peak area corresponding to different absorption peaks or shoulder peaks; using the band corresponding to the main absorption peak as the candidate band for the main irradiation band, the band corresponding to the shoulder peak or secondary absorption peak as the candidate band for the compensation irradiation band, and the low absorption region or short band region as the candidate band for the low dose adjustment band, and screening or adjusting the candidate bands according to the pre-experimental aging effect, lamp output efficiency and temperature rise.

7. The ultraviolet-assisted aging method for Baijiu as described in claim 5, characterized in that, The detection data includes at least two of the following: UV-Vis absorption data, three-dimensional fluorescence data, electronic nose response data, and volatile component detection data; the aging-related characteristics include at least two of the following: absorption peak intensity, absorption peak area, fluorescence region integral, fluorescence intensity ratio, electronic nose response value, relative content of volatile components and their ratios; the aging effect score is calculated as follows: where is the normalized value of the type of detection characteristic, is the weight determined by pre-experimental data, historical detection data, or changes in distance from the target aging sample, and .

8. The ultraviolet-assisted aging method for baijiu as described in claim 5, characterized in that, The aging effect score is obtained by comparing the processing results of the blank control group, the random band control group, and the spectral control experimental group; three parallel samples are set in each group, the bar chart result is the mean, and the error bar is the standard deviation. The LED wavelength, arrangement position, or working parameters of the spectral control experimental group are determined according to the ultraviolet absorption spectrum and the pre-experimental aging effect.

9. A UV-assisted aging control system for baijiu based on the UV-assisted aging device according to any one of claims 1 to 4, characterized in that, include: Spectrum acquisition module: used to acquire ultraviolet absorption spectrum data of the liquor to be treated or similar liquor samples in the 200 nm to 400 nm wavelength range using an ultraviolet-visible spectrophotometer; Parameter determination module: used to identify and fit peaks in the ultraviolet absorption spectrum, and in combination with the pre-experiment aging effect, LED output efficiency, light-receiving area of ​​the wine, diameter of the ceramic jar and temperature rise, output the control parameters of the emission band, arrangement position and working current of each group of deep ultraviolet LEDs in the ultraviolet LED light board. Irradiation control module: used to drive the deep ultraviolet LED beads to work through a constant current drive circuit or a pulse width modulation (PWM) circuit according to the control parameters, and to adjust the working current, pause irradiation or switch to intermittent irradiation mode in real time according to the working surface temperature of the ultraviolet LED lamp board or the inner temperature of the sealing cover output by the temperature sensor. Evaluation and feedback module: used to preprocess and extract features from multi-source detection data of liquor before and after treatment, score the aging effect according to the calculation, and output adjustment instructions for the irradiation time, working current and irradiation mode of the next batch to the irradiation control module.

10. The ultraviolet-assisted aging control system for baijiu as described in claim 9, characterized in that, The irradiation control module adjusts the operating current of the deep ultraviolet LED beads through a constant current drive circuit or pulse width modulation (PWM) method, adjusts the irradiation time and intermittent irradiation cycle through a timing control method, and reduces the operating current, pauses irradiation, or switches to intermittent irradiation mode according to the temperature signal output by the temperature sensor.

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