Portable online near-infrared detection device for vinasse components

Abstract

The utility model discloses a portable grain stillage component online near-infrared detection device which comprises an illumination unit, a quartz window, a spectrum acquisition unit and a spectrum analyzer, and the illumination unit forms an illumination light path by a light source, a focusing lens, a first optical fiber, a first collimating lens and a reflecting mirror in sequence; the spectrum acquisition unit forms an optical signal acquisition optical path by a condensing lens, a second optical fiber and a second collimating lens in sequence; the quartz window sheet is arranged on the illumination light path and the light signal acquisition light path; and the optical signal is transmitted to the spectrum analyzer. Due to the miniaturized design of the device, the device is convenient to carry and move and can be quickly deployed to different cellars for detection, and the detection flexibility and convenience are greatly improved. By optimizing the layout of the light source and the optical fiber, the size of the insertion end is reduced, so that the equipment is more easily inserted into the fermentation pit, and the applicability and practicability of the equipment are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spectral analysis and relates to a portable near-infrared detection device for online detection of wine lees components. Background Art

[0002] As an important intermediate product in the fermentation process of liquor, the quality of fermented grains is directly related to the quality and yield of the original liquor, and has a decisive influence on the quality of the final liquor. For a long time, the analysis of the physical and chemical indicators of fermented grains of liquor has mainly relied on traditional wet chemical analysis. Although this method can provide the required analysis results to a certain extent, it has many shortcomings: long analysis time, cumbersome operation, delayed results, and inability to measure on a large scale.

[0003] With the development of spectral analysis technology, especially near-infrared spectroscopy technology, people have begun to try to apply it to the detection of physical and chemical indicators of fermented grains. Near-infrared spectroscopy technology has the advantages of simple operation, fast detection speed, and the ability to achieve non-destructive detection.

[0004] The utility model of "An online detection device for distiller's grains composition" (CN219475387U) previously applied by the applicant proposes an online detection scheme to solve the above problems, which can analyze the components of distiller's grains in real time, thereby improving the detection efficiency and accuracy. The device directly collects the spectrum of distiller's grains by inserting the light source and detector into the cellar, thus realizing the online and timely analysis of the distiller's grains components.

[0005] When the device is used for online detection of fermented grains, it is necessary to insert the online detection device into a cellar with a depth of about 2 to 3 meters. In the process of realizing the utility model, the inventor found that there is at least one of the following technical problems in the prior art:

[0006] 1) The light source of the existing detection device is located below the device, and the insertion end is too large, which is not conducive to the miniaturization design of the device;

[0007] 2) Due to the large size of the insertion end, the operation of inserting the device into the fermentation cellar becomes complicated and difficult, affecting the convenience of using the device. Utility Model Content

[0008] In view of this, the purpose of the utility model is to provide an improved portable online near-infrared detection device for distiller's grains components, aiming to achieve the needs of smaller size, high operability, high portability and real-time online detection.

[0009] The inventor has continuously reformed and innovated through long-term exploration and attempts, as well as multiple experiments and efforts. In order to solve the above technical problems, the technical solution provided by the utility model is to provide a portable online near-infrared detection device for wine lees components, including a lighting unit, a quartz window, a spectrum collection unit and a spectrum analyzer. The lighting unit is composed of a light source, a focusing lens, a first optical fiber, a first collimating lens and a reflector in sequence to form an illumination optical path; the spectrum collection unit is composed of a focusing lens, a second optical fiber and a second collimating lens in sequence to form an optical signal collection optical path; the quartz window is arranged in the illumination optical path and the optical signal collection optical path; the optical signal is transmitted to the spectrum analyzer.

[0010] According to an embodiment of the portable online near-infrared detection device for lees components of the utility model, the first collimating lens, the reflector, the quartz window and the focusing lens are integrated and installed in the end shell, and the quartz window is constructed as the bottom of the end shell.

[0011] According to an embodiment of the portable online near-infrared detection device for distiller's grains components of the utility model, the diameter of the quartz window is 1.0 to 1.5 cm; the diameter of the light spot formed by the illumination light path on the distiller's grains material is 0.9 to 1.2 cm.

[0012] According to an embodiment of the portable online near-infrared detection device for lees components of the utility model, there are multiple lighting units, and the first collimating lenses and the circular array of reflectors of the multiple lighting units are arranged on the outer ring of the focusing lens.

[0013] According to an embodiment of the portable online near-infrared detection device for wine lees components of the utility model, the end shell is fixedly connected to the rod body, and the first optical fiber and the second optical fiber are hidden in the rod body.

[0014] According to an embodiment of the portable online near-infrared detection device for distiller's grains components of the utility model, the angle at which the illumination light path is incident on the quartz window is 35° to 45°.

[0015] According to one embodiment of the portable online near-infrared detection device for wine lees components of the utility model, the first optical fiber is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.39; the second optical fiber is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.39.

[0016] According to an embodiment of the portable online near-infrared detection device for lees components of the utility model, the focal lengths of the focusing lens, the first collimating lens, the condensing lens, and the second collimating lens are 8 to 12 mm.

[0017] According to an embodiment of the portable online near-infrared detection device for distiller's grains components of the utility model, a communication module is provided in the spectrometer, and the communication module signal is connected to the mobile terminal.

[0018] According to an embodiment of the portable online near-infrared detection device for distiller's grains components of the utility model, the light source is a halogen lamp; the spectrometer is a miniature spectrometer; the communication module includes one of Wi-Fi, Bluetooth, and USB; and the mobile terminal includes one of a smart phone, a tablet computer, or a laptop computer.

[0019] Compared with the prior art, one of the above technical solutions has the following advantages:

[0020] a) The miniaturized design of the device makes it easy to carry and move, and can be quickly deployed to different cellars for testing, greatly improving the flexibility and convenience of testing. By optimizing the layout of the light source and optical fiber, the volume of the insertion end is reduced, making it easier to insert the device into the fermentation cellar, improving the applicability and practicality of the device.

[0021] b) The light source and detection unit of the device are integrated in one end shell, which simplifies the installation and operation process. Users can easily insert the device into the cellar to achieve online detection of the mash without complicated settings and adjustments.

[0022] c) The device can realize real-time online analysis of distiller's grains components without taking out samples or waiting for long laboratory analysis, thus providing immediate feedback and adjustment basis for the production process.

[0023] d) The use of optical fiber with a large core diameter improves the coupling efficiency of light energy and increases the signal-to-noise ratio of the system, thereby improving the accuracy and reliability of the detection results.

[0024] e) Since key components such as light source, drive and splitter system are located outside the cellar, it is beneficial to the protection of electronic components, extend the service life of the equipment and reduce maintenance costs.

[0025] f) This device is suitable for wineries of different sizes and types, whether small workshops or large production enterprises, and can quickly detect the composition of wine lees as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 The utility model is a schematic diagram of the structural principle of a preferred embodiment of a portable online near-infrared detection device for distiller's grains components.

[0028] The marks in the figure are:

[0029] 100 end shell,

[0030] 110 quartz window,

[0031] 200 lighting units,

[0032] 210 light sources,

[0033] 220 focusing lens,

[0034] 230 First Fiber,

[0035] 240 a first collimating lens,

[0036] 250 reflectors,

[0037] 300 spectral acquisition units,

[0038] 310 condenser lens,

[0039] 320 second optical fiber,

[0040] 330 second collimating lens,

[0041] 400 spectrum analyzer,

[0042] 410 communication module,

[0043] 500 mobile terminals. DETAILED DESCRIPTION

[0044] The following is a description with reference to the accompanying drawings and a specific embodiment.

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in the subsequent drawings.

[0047] See also Figure 1 The portable online near-infrared detection device for distiller's grains components described in this embodiment includes an end shell 100 , a lighting unit 200 , a spectrum collection unit 300 and a spectrum analyzer 400 .

[0048] The end shell 100 is used to accommodate the first collimating lens 240, the reflector 250, the quartz window 110 and the focusing lens 310 of the device, and the quartz window 110 is constructed as the bottom of the end shell 100. The end shell 100 can be a truncated cone, a trapezoid, a triangular prism, or a quadrangular prism, providing physical protection and a stable installation platform for the first collimating lens 240, the reflector 250, the focusing lens 310 and the quartz window 110. The end shell 100 is made of existing durable materials to be able to resist harsh industrial environments and chemical corrosion, ensuring the long-term stable operation of the equipment. The compact design of the end shell 100 reduces the volume of the entire device and improves portability, while making the insertion end smaller and reducing interference with the wine lees sample in the cellar. Of course, in order to enable the end shell 100 to be smoothly inserted into the cellar of 2 to 3 meters, it is necessary to consider the use of an operating rod (not shown in the accompanying drawings). The end housing 100 is fixedly connected to a rod body, and the first optical fiber 230 and the second optical fiber 320 are fixed on the rod body, for example, hidden in the rod body.

[0049] The quartz window 110 is arranged on the end shell 100, and is used to transmit the light of the illumination light path and receive the diffusely reflected light signal of the sample. The quartz window 110 is arranged at the bottom of the end shell 100, and is constructed as the bottom of the end shell 100, which is the part of the device that is in direct contact with the lees sample. The quartz window 110 is made of a highly transparent quartz material and is specially designed to transmit the light of the illumination light path. The quartz material has excellent transmittance to the near-infrared spectrum, ensuring that the light emitted by the light source 210 can effectively penetrate the quartz window 110 and irradiate the lees sample. When the light of the illumination light path irradiates the lees sample, the surface of the sample will produce diffuse reflection due to its physical properties. The quartz window 110 not only allows light to penetrate, but is also responsible for collecting these diffusely reflected light signals, which carry the chemical composition information of the sample. Since the quartz window 110 is made of quartz material, it has good chemical corrosion resistance and can resist the chemical substances that may exist in the lees sample, ensuring long-term and stable use. The diameter and shape of the quartz window 110 are designed according to the specific conditions of the cellar and the needs of spectrum collection to achieve the best spectrum collection effect. In one embodiment, the diameter of the quartz window 110 is 1.0-1.5 cm, preferably 1.5 cm.

[0050] The lighting unit 200 is disposed in the end housing 100 and is used to generate and guide the lighting light path so as to effectively illuminate the wine lees sample and obtain its spectral information. The lighting unit 200 includes the following key components:

[0051] The light source 210 is used to emit illumination light. The light source 210 emits illumination light to illuminate the wine lees sample. In a preferred embodiment, the light source 210 is preferably a near-infrared spectrum halogen lamp, because it has good spectral characteristics in the near-infrared region and is suitable for spectral analysis of wine lees components.

[0052] The focusing lens 220 is used to focus the light emitted by the light source 210 into a thin light beam. The focusing lens 220 is located behind the light source 210. The function of the focusing lens 220 is to focus the light emitted by the light source 210 into a thin light beam. The focusing lens 220 helps to improve the collimation and energy density of the light beam. The light beam is coupled to the first optical fiber 230 for transmission to ensure that the sample is evenly and fully illuminated. In a preferred embodiment, the focal length of the focusing lens 220 is 1 cm.

[0053] The first optical fiber 230 connects the focusing lens 220 and the first collimating lens 240, and the first optical fiber 230 is responsible for transmitting the focused light beam to the first collimating lens 240. The first optical fiber 230 is a multimode optical fiber with a sufficient diameter and numerical aperture to reduce attenuation and distortion during light transmission. In a preferred embodiment, the first optical fiber 230 is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.39.

[0054] The first collimating lens 240 is located at the end of the first optical fiber 230. The first collimating lens 240 converts the focused light beam transmitted by the optical fiber into a parallel light beam. The first collimating lens 240 ensures that the light beam has uniform light intensity and directionality before irradiating the quartz window 110. In a preferred embodiment, the focal length of the first collimating lens 240 is 1 cm.

[0055] The reflector 250 is used to reflect the parallel light beam converted by the first collimating lens 240 onto the quartz window 110. In some embodiments, the reflector 250 can adjust the angle to change the incident direction of the light beam, ensure that the light beam is irradiated onto the sample at the optimal angle, and optimize the collection efficiency of diffusely reflected light. In some embodiments, the reflector 250 can be an independent lens, or a part of the side wall of the end shell 100, that is, a reflective material is coated on part of the inner wall of the end shell 100 to form the reflector 250. After the light is reflected by the reflector 250, the angle at which it is incident on the quartz window 110 is preferably 35° to 45°. It is recommended that the incident angle is set to 40°.

[0056] The number of the lighting units 200 may be one or more. It is recommended that the number of the lighting units 200 is more than one, for example, 2 to 4. Multiple lighting units 200 can reduce the impact of shadows and uneven illumination, improve the uniformity of sample illumination, and thus obtain more accurate spectral data. In one embodiment, the device may include four lighting units 200, and the first collimating lenses 240 and reflectors 250 of these units are arranged in a circular array on the outer ring of the condenser lens 310.

[0057] The spectrum collection unit 300 is used to collect the diffuse reflection light signal of the sample and transmit it to the spectrum analyzer 400 for analysis. The spectrum collection unit 300 includes the following key components:

[0058] The condenser lens 310 is located above the quartz window 110 and is used to collect the light signals diffusely reflected from the sample surface. The condenser lens 310 focuses these diffusely reflected light signals into a smaller light spot through its focusing effect, and couples them to the second optical fiber 320 to facilitate more efficient collection of light signals. In a preferred embodiment, the focal length of the condenser lens 310 is 1 cm.

[0059] The second optical fiber 320 is connected to the focusing lens 310 and the second collimating lens 330. The second optical fiber 320 is responsible for transmitting the optical signal focused by the focusing lens 310 to the second collimating lens 330. The second optical fiber 320 is a multimode optical fiber with a sufficient diameter and numerical aperture to reduce attenuation and distortion during light transmission. In a preferred embodiment, the first optical fiber 230 is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.39.

[0060] The second collimating lens 330 is located at the end of the second optical fiber 320. The second collimating lens 330 further focuses and adjusts the transmitted optical signal. The second collimating lens 330 ensures that the optical signal has better focusing quality and wavefront performance before entering the optical spectrum analyzer 400, thereby improving the accuracy and resolution of the optical spectrum analysis. In a preferred embodiment, the focal length of the second collimating lens 330 is 1 cm.

[0061] The spectrometer 400 has a built-in spectroscopic system, which uses a grating, a prism or other optical elements to separate the transmitted light signal by wavelength to form a spectrum. The spectrometer 400 includes a photodetector located at the focus of the spectroscopic system, which is used to detect the separated spectrum and convert it into an electrical signal. It also includes a signal processing unit that receives the electrical signal converted by the photodetector and performs necessary amplification, filtering and analog-to-digital conversion for digital analysis. It also includes a communication module 410 for wirelessly transmitting the processed spectral data to the mobile terminal 500. The communication module 410 supports a variety of wireless transmission technologies, such as Wi-Fi, Bluetooth, radio frequency, etc., to adapt to different usage environments and user needs, and USB priority transmission can also be used. The spectrometer 400 is preferably a miniature spectrometer.

[0062] In a further embodiment, a mobile terminal 500 is also included, which is paired with the communication module 410 and is used to receive spectral data and perform data analysis and display. A dedicated application is run on the mobile terminal 500 to perform necessary processing on the received raw spectral data, including preprocessing (normalization, calibration, smoothing) and quantitative analysis, etc. The processed spectral data can be displayed on the mobile terminal 500 in the form of graphics or charts, so that the user can intuitively view the spectral characteristics and analysis results of the sample. The mobile terminal 500 has a data storage function, and the received and processed spectral data can be saved in a local memory for subsequent retrieval and analysis. The mobile terminal 500 includes one of a smart phone, a tablet computer or a laptop computer.

[0063] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A portable online near-infrared detection device for distiller's grains components, comprising a lighting unit, a quartz window, a spectrum collection unit and a spectrum analyzer, characterized in that: The illumination unit is composed of a light source, a focusing lens, a first optical fiber, a first collimating lens and a reflector in sequence to form an illumination optical path; the spectrum collection unit is composed of a focusing lens, a second optical fiber and a second collimating lens in sequence to form an optical signal collection optical path; the quartz window is arranged on the illumination optical path and the optical signal collection optical path; the optical signal is transmitted to the spectrum analyzer.

2. The portable online near-infrared detection device for distiller's grains components according to claim 1, characterized in that: The first collimating lens, the reflector, the quartz window and the focusing lens are integrated and installed in the end shell, and the quartz window is constructed as the bottom of the end shell.

3. The portable online near-infrared detection device for distiller's grains components according to claim 2, characterized in that: The diameter of the quartz window is 1.0-1.5 cm; the diameter of the light spot formed by the illumination light path on the wine lees material is 0.9-1.2 cm.

4. The portable online near-infrared detection device for distiller's grains components according to claim 1 or 2, characterized in that: There are multiple lighting units, and the first collimating lenses and the circular array of reflectors of the multiple lighting units are arranged on the outer ring of the condensing lens.

5. The portable online near-infrared detection device for distiller's grains components according to claim 2, characterized in that: The end shell is fixedly connected to the rod body, and the first optical fiber and the second optical fiber are hidden in the rod body.

6. The portable online near-infrared detection device for distiller's grains components according to claim 1, characterized in that: The angle at which the illumination light path is incident on the quartz window is 35° to 45°.

7. The portable online near-infrared detection device for distiller's grains components according to claim 1, characterized in that: The first optical fiber is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.39; the second optical fiber is a multimode optical fiber with a single core diameter of 1500 μm, a length of 2 to 3 m, and a numerical aperture of 0.

39.

8. The portable online near-infrared detection device for distiller's grains components according to claim 1, characterized in that: The focal lengths of the focusing lens, the first collimating lens, the condensing lens and the second collimating lens are 8-12 mm.

9. The portable online near-infrared detection device for distiller's grains components according to claim 1, characterized in that: The spectrum analyzer is provided with a communication module, and the communication module signal is connected to the mobile terminal.

10. The portable online near-infrared detection device for distiller's grains components according to claim 8, characterized in that: The light source is a halogen lamp; the spectrum analyzer is a miniature spectrum analyzer; the communication module includes one of Wi-Fi, Bluetooth, and USB; and the mobile terminal includes one of a smart phone, a tablet computer, or a laptop computer.

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