Functionalization-based multi-channel optical fiber sensor automatic integrated manufacturing equipment

Abstract

The invention, which relates to the technical field of optical fiber sensor manufacturing, discloses a functionalization-based multichannel optical fiber sensor automatic integrated manufacturing device comprising a fixing module, a functionalization module, a packaging module and a control module. The fixing module is used for placing at least one packaging shell, the packaging shell is provided with a packaging opening and a functional interface which are communicated with the interior, and an optical fiber sensing unit is arranged in the packaging shell; the functional module is communicated with the functional interface of the packaging shell and can introduce treatment liquid and / or treatment gas into the packaging shell; the packaging module can be communicated with the packaging opening of the packaging shell and can perform glue injection packaging on the packaging opening; and the control module is in communication connection with the functional module and the packaging module and is used for controlling actions of the functional module and the packaging module. The invention provides functionalization-based multi-channel optical fiber sensor automatic integrated manufacturing equipment, which is beneficial to realizing automatic packaging and functionalization processing of an optical fiber sensor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber sensor manufacturing, in particular to a multi-channel optical fiber sensor automatic integrated manufacturing equipment based on functionalization. BACKGROUND

[0002] Biochemical substances and biological pathogens are the two most common substances in human living environment, which have a crucial impact on human life and health. With the continuous progress and development of society and the improvement of living standards, the attention to biochemical substances and biological pathogens is getting higher and higher, so the detection of chemical substances and biological pathogens has gradually been valued. As an important means of biochemical substance and biological pathogen detection, optical fiber biochemical sensor has been widely studied, and its excellent performance such as sensitivity and specificity is expected to become the main way of biochemical sensing in the future. Among optical fiber biochemical sensors, optical fiber fluorescence biochemical sensors and optical fiber interferometer biochemical sensors based on fluorescence and interference principles are the most common. Optical fiber fluorescence biochemical sensors can realize qualitative and quantitative detection of biochemical substances or biological pathogens by detecting fluorescence intensity, fluorescence lifetime and other fluorescence characteristics. Optical fiber interferometer biochemical sensors can realize qualitative and quantitative detection of biochemical substances or biological pathogens by detecting wavelength changes of interference spectrum. Optical fiber biochemical sensors have the advantages of high sensitivity and strong anti-interference, and can also realize real-time monitoring at a distance, which is suitable for monitoring ecological environment in harsh conditions.

[0003] However, the manufacturing technology of optical fiber biochemical sensing units is not mature at present, and cannot realize mechanized production. In the production process, there are disadvantages such as complex preparation process, high labor cost, insufficient reproducibility, and difficulty in realizing large-scale batch production. Under this background, developing an optical fiber biochemical sensing unit with high efficiency, batch production and high reproducibility can effectively promote the application and popularization of optical fiber sensing technology in the fields of biology and chemistry, which has important significance. SUMMARY

[0004] The purpose of the present application is to provide a multi-channel optical fiber sensor automatic integrated manufacturing equipment based on functionalization to solve the problems existing in the prior art, which is beneficial to realize the automatic packaging and functionalization of optical fiber sensors.

[0005] To achieve the above purpose, the present application provides the following scheme: The application provides an automatic integrated manufacturing equipment for a functionalized multi-channel optical fiber sensor, which comprises a fixing module, a functionalization module, a packaging module and a control module; the fixing module is used for placing at least one packaging shell, the packaging shell has a packaging opening and a function interface which are connected to the inside of the packaging shell, and an optical fiber sensing unit is arranged in the packaging shell; the functionalization module comprises a liquid filling assembly and an air filling assembly; the liquid filling assembly and the air filling assembly are both connected to the function interface through a control valve; the liquid filling assembly is used for providing a treatment liquid, and the air filling assembly is used for providing a treatment gas with different temperatures; the control valve is used for connecting the liquid filling assembly and / or the air filling assembly to the function interface; the packaging module can be connected to the packaging opening of the packaging shell and can perform glue injection packaging on the packaging opening; the control module is in communication connection with the liquid filling assembly, the air filling assembly, the control valve and the packaging module, and is used for controlling the actions of the functionalization module and the packaging module.

[0006] Preferably, the packaging module comprises a packaging seat, at least one glue injection assembly and at least one curing assembly; the packaging seat is arranged above the fixing module and can move vertically relative to the fixing module; each glue injection assembly and each curing assembly are arranged on the packaging seat and are arranged in one-to-one correspondence with the packaging shells; the glue injection end of each glue injection assembly can be connected to the corresponding packaging opening and inject glue into the packaging opening, and each curing assembly can cure the glue sample in the corresponding packaging opening; each glue injection assembly and each curing assembly are in communication connection with the control module.

[0007] Preferably, the packaging module further comprises a lifting mechanism connected to a fixed surface and the packaging seat, the lifting mechanism can adjust the position of the packaging seat in the vertical direction, so that the glue injection assembly and the curing assembly can approach or move away from the packaging shell; the lifting mechanism is in communication connection with the control module.

[0008] Preferably, at least one image detection module is arranged in one-to-one correspondence with each packaging shell, which is used for acquiring image information of the optical fiber sensing unit in the corresponding packaging shell; each image detection module is in communication connection with the control module, and the control module can receive the image information.

[0009] Preferably, at least one position adjusting mechanism is further included, which is arranged on the fixing module and corresponds to each of the packaging shells; each of the optical fiber sensing units is connected with a transmission optical fiber capable of extending out of the packaging opening; each of the position adjusting mechanisms is connected with the part of the transmission optical fiber connected with the optical fiber sensing unit and extending out of the packaging opening; each of the position adjusting mechanisms can adjust the position of the optical fiber sensing unit in the packaging shell; each of the position adjusting mechanisms is in communication connection with the control module, and the control module can control the action of the corresponding position adjusting mechanism according to the image information.

[0010] Preferably, an integration module is further included, which is connected with the transmission optical fiber connected with each of the optical fiber sensing units; the control module is in communication connection with the integration module; the integration module can emit optical signals to the optical fiber sensing units to generate scattered light around the optical fiber sensing units; the integration module can further adjust the optical signals returned by the optical fiber sensing units into electrical signals and transmit the electrical signals to the control module; the image information includes the structural image of the optical fiber sensing unit and the scattered light image.

[0011] Preferably, the fixing module includes a fixing seat and a fixing mold, the fixing mold is arranged on the fixing seat, and the fixing mold is provided with at least one placing groove for placing the packaging shell.

[0012] Preferably, a covering seat is further included, the covering seat and the fixing mold are both arranged to be heat insulation materials; at least one matching part is arranged on the side of the covering seat facing the fixing seat; the covering seat covers the fixing seat, and each of the matching parts can be matched with the corresponding placing groove to cover the packaging shell.

[0013] Preferably, a waste liquid treatment module is further included, and a plurality of the packaging shells are arranged on the fixing module; each of the packaging shells is arranged to be a four-way shell, and the packaging shell includes two opposite packaging openings and two opposite functional interfaces; the packaging shells are connected in series through the functional interfaces; one of the functional interfaces of the packaging shell on one side is connected with and communicates with the functionalization module, and one of the functional interfaces of the packaging shell on the other side is connected with and communicates with the waste liquid treatment module; the waste liquid treatment module is in communication connection with the control module, and the waste liquid treatment module is used for receiving the treatment liquid in each of the packaging shells.

[0014] The present application has the following technical effects relative to the prior art: The application provides an automatic integrated manufacturing device for a functionalized multi-channel optical fiber sensor, which can realize encapsulation of an optical fiber sensing unit by injecting glue into an encapsulation opening of an encapsulation shell through an encapsulation module and functionalization treatment of the optical fiber sensing unit by introducing treatment liquid and / or treatment gas into the encapsulation shell through a functionalization module under the control of a control module, so as to realize automatic encapsulation and functionalization treatment of the optical fiber sensor, improve efficiency and reduce labor operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 The whole connection schematic diagram of the automatic integrated manufacturing device for a functionalized multi-channel optical fiber sensor provided in the first embodiment of the application is shown in the figure. Figure 2 The axial side schematic diagram of the automatic integrated manufacturing device for a functionalized multi-channel optical fiber sensor provided in the first embodiment of the application in an encapsulation state (without the functionalization module) is shown in the figure. Figure 3 The image detection schematic diagram of different types of optical fiber sensing units in the first embodiment of the application is shown in the figure. Figure 4 The exploded schematic diagram of the automatic integrated manufacturing device for a functionalized multi-channel optical fiber sensor provided in the first embodiment of the application in a functionalization treatment state (without the functionalization module) is shown in the figure.

[0017] In the figure: 1-integration module; 2-optical fiber treatment liquid tank; 3-peristaltic pump; 4-regulating motor; 5-control valve; 6-gas-liquid channel; 7-fixing module; 8-transmission optical fiber; 9-gas compression heater; 10-compressed gas cylinder; 11-optical fiber sensing unit; 12-glue injection motor; 13-image detection module; 14-waste liquid storage container; 15-control module; 16-fixing seat; 17-optical fiber clamping device; 18-fixing mold; 19-supporting column; 20-longitudinal movement guide rail; 21-encapsulation seat; 22-high-power ultraviolet lamp; 23-high-resolution camera; 24-ultraviolet glue injector; 25-lifting motor; 26-sliding guide rail; 27-entering light; 28-optical fiber misalignment interference structure; 29-encapsulation shell; 30-tapered optical fiber structure; 31-optical fiber echo wall structure; 32-optical fiber grating structure; 33-scattered light; 34-ultraviolet glue; 35-treatment gas or treatment liquid; 36-covering mold; 37-covering seat. DETAILED DESCRIPTION

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The purpose of this invention is to provide an automated integrated manufacturing equipment for multi-channel fiber optic sensors based on functionalization, so as to solve the problems existing in the prior art and facilitate the automatic packaging and functionalization of fiber optic sensors.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 This embodiment provides an automated integrated manufacturing equipment based on a functionalized multi-channel fiber optic sensor. Please refer to [link to relevant documentation]. Figures 1-4 The system includes a fixed module 7, a functional module, a packaging module, and a control module 15. The fixed module 7 is used to place at least one packaging shell 29, which has a packaging port and a functional interface communicating with the interior. An optical fiber sensing unit 11 is disposed inside the packaging shell 29. The functional module includes a liquid filling component and a gas filling component. Both the liquid filling component and the gas filling component are connected to the functional interface through a control valve 5. The liquid filling component is used to provide the processing liquid, and the gas filling component is used to provide the processing gas at different temperatures. The control valve 5 is used to connect the liquid filling component and / or the gas filling component to the functional interface. The liquid filling component, the gas filling component, and the control valve 5 are all communicatively connected to the control module 15. The packaging module can communicate with the packaging port of the packaging shell 29 and can perform encapsulation of the packaging port. The control module 15 is communicatively connected to both the functional module and the packaging module and is used to control the operation of the functional module and the packaging module.

[0022] Under the control of the control module 15, the fiber optic sensing unit 11 can be encapsulated by injecting glue into the encapsulation port of the encapsulation shell 29 through the encapsulation module, and the fiber optic sensing unit 11 can be functionalized by introducing processing liquid and / or processing gas into the encapsulation shell 29 through the functionalization module. This is conducive to realizing automatic encapsulation and functionalization of fiber optic sensors, improving efficiency and reducing manual operation costs.

[0023] The liquid filling component includes a fiber optic processing liquid tank 2 and a power module such as a peristaltic pump 3 connected in sequence. The gas filling component includes a compressed gas cylinder 10 and a gas compression heater 9 connected in sequence. The power module and the gas compression heater 9 are connected to the encapsulation shell 29 through a control valve 5. All components are connected through a gas-liquid channel 6. The fiber optic processing liquid tank 2 is a liquid storage container that is easy to disassemble and clean. It can store the reaction liquid required for the functionalization of the fiber optic sensing unit 11, such as APTES, glutaraldehyde, etc., or hold cleaning liquid. The power module such as the peristaltic pump 3 can extract the processing liquid or cleaning liquid from the fiber optic processing liquid tank 2 and input it into the encapsulation shell 29 after encapsulation through the gas-liquid channel 6. The fiber optic sensing unit 11 undergoes reaction or cleaning and then discharges the gas; the compressed gas cylinder 10 is a container for storing reaction gases such as nitrogen, oxygen, or ultrapure air, providing gas for the functionalization process; the gas compression heater 9 heats the gas based on the principle of gas compression and, while ensuring that the flow rate and velocity remain constant, inputs the gas into the fiber optic sensing unit 11 through the gas-liquid channel 6 for reaction; the control valve 5 can be a three-way reversing valve, which can switch between input gas and liquid or input them simultaneously, meeting the needs of the fiber optic sensing unit 11 to input reaction liquid and introduce reaction gas during the functionalization process; the gas-liquid channel 6 uses a silicone tube, which can transport reaction liquid and gas without leakage.

[0024] In the optional embodiments of this example, more preferably, the encapsulation module includes an encapsulation base 21, at least one dispensing component, and at least one curing component; the encapsulation base 21 is disposed above the fixed module 7 and can move vertically relative to the fixed module 7; each dispensing component and each curing component is disposed on the encapsulation base 21 and is disposed one-to-one with the encapsulation shell 29; the dispensing end of each dispensing component can communicate with the corresponding encapsulation port and dispense adhesive into the encapsulation port, and each curing component can cure the adhesive sample in the corresponding encapsulation port; each dispensing component and each curing component are communicatively connected to the control module 15.

[0025] The dispensing assembly includes a dispensing motor 12 and a UV glue injector 24. The number of dispensing motors 12 and UV glue injectors 24 is the same as the number of encapsulation ports on the corresponding encapsulation shell 29. In this embodiment, two are provided. Both the dispensing motor 12 and the UV glue injector 24 are mounted on the encapsulation base 21. Each UV glue injector 24 stores liquid UV glue 34 with a certain degree of fluidity and is connected to the drive end of the corresponding dispensing motor 12. Under the control of the control module 15, the dispensing motor 12 can automatically and quantitatively extrude the UV glue 34. Each curing assembly includes a high-power UV lamp 22. The high-power UV lamp 22 is installed above the encapsulation position of the fiber optic sensing unit 11. Under the control of the control module 15, the high-power UV lamp 22 ensures that it can irradiate the UV glue 34 after it is extruded and quickly cure and seal it. Specifically, the specific power of the high-power UV lamp 22 is adjusted according to actual needs. The selection of the injection motor 12 can be based on the ability to achieve rapid curing. Specifically, the injection motor 12 can be a combination of multiple motors, such as a drive motor and a translation motor. The housing of the UV glue injector 24 and the drive motor can be fixedly connected to a translation plate by bolts or clips. The translation plate is slidably connected to the encapsulation base 21 via a slide rail. The drive end of the drive motor is directly connected to the piston rod of the UV glue injector 24, and the injection is performed by extending and retracting the drive motor. In addition, the translation motor is fixedly mounted on the encapsulation base 21, and the drive end of the translation motor is fixedly connected to the translation plate. The extension and retraction of the translation motor drives the translation plate to move the drive motor and the UV glue injector 24, so that when the UV glue injector 24 is at the same height as the encapsulation opening, it can be inserted into the encapsulation opening for injection or detached from the encapsulation opening after injection. Furthermore, the injection assembly can also use other structures to adjust the position of the UV glue injector 24 and drive the injection.

[0026] In the optional embodiment, more preferably, the encapsulation module further includes a lifting mechanism, which is connected to a fixed surface and the encapsulation base 21. The lifting mechanism can adjust the position of the encapsulation base 21 vertically so that the dispensing component and the curing component can move closer to or further away from the encapsulation shell 29. The lifting mechanism is communicatively connected to the control module 15.

[0027] To facilitate the placement of the encapsulation housing 29 and the fiber optic sensing unit 11, the encapsulation module is initially positioned away from the fixed module 7. Therefore, a lifting mechanism is provided to automatically lift and lower the encapsulation module under the control of the control module 15. Specifically, the encapsulation base 21 is supported on a fixed surface, such as the ground, by multiple support columns 19. The lifting mechanism includes a lifting motor 25 and a longitudinal moving guide rail 20 fixedly mounted on the support columns 19. The encapsulation base 21 is vertically slidably connected to each support column 19 via the longitudinal moving guide rail 20. The lifting motor 25 is connected to the encapsulation base 21, and under the control of the control module 15, the lifting motor 25 drives the encapsulation base 21 to move vertically. Guided by the moving guide rail 20, the dispensing and curing components move vertically, bringing the UV glue injector 24 to the same height as the encapsulation position. The UV glue injector 24 is then manipulated to inject UV glue 34 into the encapsulation port of the encapsulation shell 29, and the high-power UV lamp 22 is turned on to quickly cure and seal the UV glue 34, completing the encapsulation. The entire encapsulation process is operated by the control module 15, eliminating the need for complex and cumbersome steps, making it quick and intelligent. Furthermore, it should be noted that the vertical movement of the encapsulation base 21 is not limited to the aforementioned driving method. As long as vertical driving adjustment can be achieved, multiple lifting columns can be set to directly support the encapsulation base 21 and adjust its position.

[0028] In the optional scheme of this embodiment, more preferably, the automated integrated manufacturing equipment based on functionalized multi-channel fiber optic sensors provided in this embodiment further includes at least one image detection module 13, which is set one-to-one with each packaging shell 29, and is used to acquire image information of the fiber optic sensing unit 11 in the corresponding packaging shell 29. Each image detection module 13 is communicatively connected to the control module 15, and the control module 15 is able to receive image information.

[0029] The image detection module 13 is configured as a high-resolution camera 23, such as a CCD camera or a CMOS camera, which is fixedly mounted on the packaging base 21 and can move vertically with the packaging base 21. It is used to capture digital image information of the position of the fiber optic sensing unit 11 below and transmit it to the control module 15 so as to determine whether the current position of the fiber optic sensing unit 11 in the packaging shell 29 meets the position requirements required for subsequent functionalization processing.

[0030] In a preferred embodiment, the automated integrated manufacturing equipment for multi-channel fiber optic sensors based on functionalization provided in this embodiment further includes at least one position adjustment mechanism, which is disposed on the fixed module 7 and corresponds one-to-one with each encapsulation shell 29; each fiber optic sensing unit 11 is connected to a transmission fiber 8 that can extend out of the encapsulation opening, and each position adjustment mechanism is connected to the portion of the transmission fiber 8 that extends out of the encapsulation opening connected to the corresponding fiber optic sensing unit 11, and each position adjustment mechanism can adjust the position of the fiber optic sensing unit 11 within the encapsulation shell 29; each position adjustment mechanism is communicatively connected to the control module 15, and the control module 15 can control the action of the corresponding position adjustment mechanism according to image information.

[0031] The control module 15 receives the digital image of the fiber optic sensing unit 11 acquired by the image detection module 13, processes and identifies the position of the fiber optic sensing unit 11 in the packaging shell 29 using conventional digital image processing algorithms, and adjusts its position through a position adjustment mechanism to calibrate the position, adjusting the fiber optic sensing unit 11 to the center position of the packaging shell 29 before packaging, ensuring the feasibility and effectiveness of subsequent functionalization. Specifically, each position adjustment mechanism includes an adjustment motor 4, a fiber optic clamp 17, and a sliding guide rail 26. The sliding guide rail 26 slides through the bottom of the fixing mold 18 of the fixing module 7. In this embodiment, each packaging shell 29 includes two packaging openings. Correspondingly, the number of adjustment motors 4 and fiber optic clamps 17 is also set to two. Fiber optic clamps 17 are fixedly installed at both ends of the sliding guide rail 26 to clamp the transmission optical fibers 8 extending from the two packaging openings. The two fiber optic clamps 17 are connected to two adjusting motors 4, and the control module 15 controls the two adjusting motors 4 to move synchronously, thereby driving the two fiber optic clamps 17 to move the fiber optic sensing unit 11 in one direction, thus adjusting the position of the fiber optic sensing unit 11 within the encapsulation shell 29. The process begins by placing the transmission fiber 8 connected to the fiber optic sensing unit 11 on the fiber optic clamps 17 and fixing it. The height of the encapsulation base 21 and the image detection module 13 is adjusted via a lifting mechanism to ensure the clarity of the digital image capture. After image processing and recognition by the control module 15, the adjusting motors 4 are controlled to move the position of the fiber optic sensing unit 11 to the center of the encapsulation shell 29 for calibration. Then, the height of the encapsulation base 21 is lowered for encapsulation. The fiber optic clamps 17 and adjusting motors 4 use conventional mechanisms, the specific structure of which will not be elaborated here. Furthermore, it should be noted that the specific structure of the position adjustment mechanism is not limited to the above method; other methods, such as hydraulic drive, can also be used, as long as the position of the fiber optic clamps 17 can be adjusted.

[0032] In a preferred embodiment, the automated integrated manufacturing equipment for multi-channel fiber optic sensors provided in this embodiment further includes an integration module 1. The integration module 1 is connected to the transmission optical fibers 8 connected to each fiber optic sensing unit 11. The control module 15 is communicatively connected to the integration module 1. The integration module 1 can emit optical signals to the fiber optic sensing unit 11 to generate scattered light 33 around the fiber optic sensing unit 11. The integration module 1 can also modulate the optical signals returned by the fiber optic sensing unit 11 into electrical signals and transmit them to the control module 15. The image information includes a structural image of the fiber optic sensing unit 11 and an image of the scattered light 33.

[0033] The integrated module 1 is configured as a light source and signal acquisition, processing, and demodulation integrated module. The light source provides the optical signals required by the fiber optic sensing unit 11 during the packaging and functionalization process, assisting in the positioning of the fiber optic sensing unit 11 and monitoring of the functionalization process. The signal acquisition, processing, and demodulation integrated system, based on the principle of fiber optic gratings, can demodulate multi-channel optical signals and convert them into electrical signals for transmission to the control module 15 for data processing and analysis. Specifically, the light source can be selected as an infrared light source or a green light source, etc., as needed. The signal acquisition, processing, and demodulation integrated system and the light source can be detachably integrated and packaged, and connected to one end of the transmission optical fiber 8 through an optical fiber circulator to realize the transmission and acquisition of optical signals. In addition, the light source can be optimized into a multi-light source switching module, which can adapt to the needs of different fiber optic sensing units 11 and monitor their functionalization effect during the functionalization process. It can also be automatically switched through a computer and a programmable automation module, reducing the amount of operation and improving the degree of automation. The signal acquisition, processing and demodulation integration module 1 adopts a conventional module and uses fiber optic gratings to demodulate optical signals. It can also add beam splitting gratings as needed to demodulate optical signals in the visible light band and improve their demodulation performance in the visible light band.

[0034] In the optional embodiments of this example, more preferably, the fixing module 7 includes a fixing base 16 and a fixing mold 18. The fixing mold 18 is disposed on the fixing base 16 and has at least one placement groove for placing the packaging shell 29.

[0035] The shape of the placement slot matches the shape of the package shell 29 to achieve stable placement of the package shell 29. In addition, the position on the placement slot opposite to the corresponding package port and functional interface needs to be set as a channel slot to connect to the outside world so as to connect with the package module or functional module in the future.

[0036] Both the mounting base 16 and the fixing mold 18 are made of porous fiber or aluminum foil with good heat insulation performance. They can keep the packaging shell 29 from displacement and vibration during the packaging process of the fiber optic sensing unit 11, improve the packaging stability and standardization, and maintain the temperature of the reaction environment during the functionalization process of the fiber optic sensing unit 11, reduce the impact of ambient temperature fluctuations on the functionalization effect, and improve the stability and repeatability of the preparation.

[0037] In the optional solutions of this embodiment, more preferably, the automated integrated manufacturing equipment for multi-channel fiber optic sensors based on functionalization provided in this embodiment also includes a cover seat 37. Both the cover seat 37 and the fixed mold 18 are made of heat-insulating material. The cover seat 37 is provided with at least one mating part on the side facing the fixed seat 16. The cover seat 37 covers the fixed seat 16, and each mating part can cooperate with the corresponding placement groove to cover the encapsulation shell 29.

[0038] After the fiber optic sensing unit 11 is packaged, a functionalization process will be carried out. After packaging, UV adhesive 34 is cured at the packaging opening and the two sides are sealed. The unsealed functional interface is connected to the control valve 5 of the functional module. The top is replaced with a cover seat 37 to cover the fixed mold 18. The lower side of the cover seat 37 is set as a mating part, namely the cover mold 36. The space reserved in the fixed mold 18 and the cover mold 36 can achieve a transition fit with the packaging shell 29. The cover seat 37 and the cover mold 36 are made of the same material as the fixed seat 16 and the fixed mold 18, so they can be tightly combined to achieve the purpose of heat preservation and maintaining temperature stability. After installation, the processing gas or processing liquid 35 can be injected from the gas-liquid channel 6 for subsequent functionalization of the fiber optic sensing unit 11. To change the processing liquid, only the prepared fiber optic processing liquid tank 2 needs to be replaced. To change the gas, only the direction of the control valve 5 needs to be changed. The whole process is carried out after packaging, without the need to change equipment, simplifying the process and realizing simple automatic integrated operation, effectively solving the problem of cumbersome and complicated functionalization operation.

[0039] In the optional embodiments of this example, more preferably, the automated integrated manufacturing equipment for multi-channel fiber optic sensors based on functionalization provided in this example further includes a waste liquid treatment module, and multiple encapsulation shells 29 are placed on the fixed module 7. Each encapsulation shell 29 is configured as a four-way shell, and each encapsulation shell 29 includes two opposite encapsulation ports and two opposite functional interfaces. Each encapsulation shell 29 is connected in series through the functional interfaces. One functional interface of one encapsulation shell 29 is connected and communicates with the functionalization module, and one functional interface of the other encapsulation shell 29 is connected and communicates with the waste liquid treatment module. The waste liquid treatment module is communicatively connected to the control module 15 and is used to receive the treatment liquid in each encapsulation shell 29.

[0040] The waste liquid treatment module includes a waste liquid collection container 14 and a suction component such as a peristaltic pump 3. The waste liquid collection container 14 is a waste liquid collection tank with corrosion resistance and stable chemical properties. It is detachable and easy to clean, which facilitates the collection and treatment of waste liquid after functionalization. Under the control of the control module 15, the suction component extracts the waste liquid from each sub-encapsulation shell 29 to empty or clean the encapsulation shell 29. Adjacent encapsulation shells 29 are connected by gas-liquid channels 6 to form an array of multiple multi-channel fiber optic sensing units 11. The module can simultaneously process the encapsulation and functionalization of multiple channel fiber optic sensing units 11, which greatly improves the efficiency of the preparation.

[0041] In the optional schemes of this embodiment, more preferably, the fiber optic sensing unit 11 can be pre-prepared by means of misaligned fusion splicing, tapering, fused resonant cavity, etched grating, corrosion modification, etc., and can then achieve specific detection of specific substances or physical quantities through encapsulation and functionalization processes. The detection of the position of the fiber optic sensing unit 11 is crucial to the effectiveness of subsequent functionalization, making image processing and recognition essential. The image captured by the high-resolution camera 23 includes the encapsulation shell 29, the fiber optic sensing unit 11, and the gas-liquid channel 6. The encapsulation shell 29, made of plastic, has a certain degree of transparency, allowing observation of the internal fiber optic sensing unit 11. The gas-liquid channel 6 serves as the medium connecting different encapsulation shells 29. Due to the different structures of the fiber optic sensing units 11, the detection methods also differ. Image recognition primarily involves two parallel methods: First, identifying the external shape of the fiber optic sensing unit 11 structure. For example, the misaligned structure of the fiber optic misalignment interference structure 28, the slender structure of the tapered fiber structure 30, and the spherical sounding wall of the fiber optic whispering wall structure 31 are easily identified directly by their external shape. Then, the position of the fiber optic sensing unit 11 within the encapsulation shell 29 is confirmed, and the position is calibrated by manipulating the control motor 4. Second, using the light capture method. For some structures, such as the fiber optic grating structure 32, the fiber optic sensing unit cannot be directly identified by its external shape. The precise location of the sensing unit 11 can be identified by the principle that incident light 27 is input into the optical fiber and scattered light 33 is formed on the surface of the optical fiber sensing unit 11. The incident light 27 uses 520nm green light, which is most sensitive to cameras and the human eye. When the incident light 27 passes through the optical fiber misalignment interference structure 28, it will generate obvious scattered light 33 on the misalignment structure on the side; when the incident light 27 passes through the tapered optical fiber structure 30, it will generate a small amount of scattered light 33 at the tapered positions on both sides; when the incident light 27 passes through the spherical whispering wall of the optical fiber whispering wall structure 31, it will generate a small amount of scattered light 33; when the incident light 27 passes through the fiber optic grating structure 32, it will form scattered light 33 on the surface of the periodic structure. By capturing the image of the scattered light 33 with a camera and identifying its position, the optical fiber sensing unit 11 can be located and calibrated. The combination of the two identification methods can effectively improve the accuracy of the detection. The method is simple and can be completed entirely on the control module 15, which reduces the calibration time, labor costs and difficulty and improves the calibration efficiency.

[0042] In the optional scheme of this embodiment, more preferably, the control module 15 is set as a terminal device such as a computer, which can communicate with each component wirelessly or wiredly. The control module 15 can receive the spectral data transmitted from the integrated module 1, process it and present it to the operator visually, and can monitor the functionalization process in real time. In addition, it can also receive the digital image of the fiber optic sensing unit 11 collected by the image detection module 13, process it through digital image processing algorithms and identify the position of the fiber optic sensing unit 11 in the packaging shell 29, and adjust its position by controlling the adjusting motor 4 to perform position calibration. The fiber optic sensing unit 11 is adjusted to the center position of the adjusting motor 4 before packaging, ensuring the feasibility and effectiveness of subsequent functionalization. The entire automatic integrated equipment integrates the necessary processes required for fiber optic sensor packaging and functionalization, and can be automated by computer-controlled motors. It standardizes the manufacturing process, improves the stability and repeatability of production, and effectively solves the shortcomings of complex, cumbersome, inefficient and unstable fiber optic sensing unit 11 manufacturing. It provides a new idea and technical guarantee for the mass production of fiber optic sensors, and is expected to greatly promote the application and popularization of fiber optic sensors.

[0043] Thus, the automated integrated manufacturing equipment for multi-channel fiber optic sensors provided in this embodiment integrates automated packaging and functionalization. The control module 15 identifies the position of the fiber optic sensing unit 11, uniformly adjusts the fiber position, and injects and cures the encapsulating UV adhesive 34, achieving intelligent and automated packaging of the fiber optic sensing unit 11. Furthermore, the gas-liquid channel 6 connects multiple fiber optic sensing units 11, enabling simultaneous packaging and subsequent functionalization of multiple units. Compared to current processes for preparing fiber optic sensing units 11 for biochemical substances and biomolecules, this significantly improves preparation efficiency and stability while reducing operator difficulty, achieving automated and intelligent preparation of the fiber optic sensing unit 11.

[0044] Using porous fiber with good thermal insulation properties as the insulation material to make the fixing module 7 can not only fix the encapsulation shell 29 to prevent displacement and vibration caused by the injection of UV glue 34 during the encapsulation process, but also maintain the temperature of the reaction environment during the subsequent functionalization of the fiber optic sensing unit 11, reduce the influence of the ambient temperature on the reaction process, minimize the impact of variables, improve the stability of functionalization and the standardization of the fabrication of the fiber optic sensing unit 11, and facilitate the disassembly of the fiber optic sensing unit 11 after functionalization.

[0045] A CCD or CMOS camera is used as the image acquisition device for position calibration during the packaging process of the fiber optic sensing unit 11. It is small in size and can achieve wireless transmission. The control module 15 can perform image processing. With the help of feature information such as scattered light 33 or misaligned structure on the surface of the fiber optic sensing unit 11, the position of the fiber optic sensing unit 11 can be effectively identified. The position of the fiber optic sensing unit 11 can be adjusted by adjusting the motor 4. The whole process can be completed under the control of the control module 15. Compared with the traditional manual and cumbersome operation required for the packaging of fiber optic sensing units 11 for biochemical substances and biomolecules, this device can realize automated and intelligent operation, greatly reducing the workload and operation error of operators, and effectively improving the stability of preparation efficiency.

[0046] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An automated integrated manufacturing equipment for multi-channel fiber optic sensors based on functionalization, characterized in that: include: A fixed module is used to place at least one encapsulation shell, the encapsulation shell having an encapsulation port and a functional interface communicating with the interior, and an optical fiber sensing unit is disposed inside the encapsulation shell. A functional module includes a liquid filling component and a gas filling component; both the liquid filling component and the gas filling component are connected to the functional interface via a control valve; the liquid filling component is used to provide a processing liquid, and the gas filling component is used to provide processing gases at different temperatures; the control valve is used to connect the liquid filling component and / or the gas filling component to the functional interface. The encapsulation module is capable of communicating with the encapsulation port of the encapsulation shell and performing encapsulation with glue onto the encapsulation port. and The control module is communicatively connected to the liquid filling component, the air filling component, the control valve, and the encapsulation module, and is used to control the operation of the functional module and the encapsulation module.

2. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 1, characterized in that: The encapsulation module includes an encapsulation base, at least one dispensing component, and at least one curing component. The encapsulation base is disposed above the fixing module and is movable vertically relative to the fixing module. Each dispensing component and each curing component is disposed on the encapsulation base and corresponds one-to-one with the encapsulation shell. The dispensing end of each dispensing component can communicate with the corresponding encapsulation port and dispense dispensing into the encapsulation port, and each curing component can cure the dispensing sample in the corresponding encapsulation port. Each of the dispensing components and each of the curing components are communicatively connected to the control module.

3. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 2, characterized in that: The encapsulation module also includes a lifting mechanism connected to a fixed surface and the encapsulation base. The lifting mechanism can adjust the position of the encapsulation base vertically so that the dispensing component and the curing component can move closer to or further away from the encapsulation shell. The lifting mechanism is communicatively connected to the control module.

4. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 1, characterized in that: It also includes at least one image detection module, which is configured to correspond one-to-one with each of the encapsulation shells, for acquiring image information of the fiber optic sensing unit within the corresponding encapsulation shell. Each image detection module is communicatively connected to the control module, and the control module is capable of receiving the image information.

5. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 4, characterized in that: It also includes at least one position adjustment mechanism, which is disposed on the fixed module and corresponds to each of the encapsulation shells; each of the fiber optic sensing units is connected to a transmission fiber that can extend out of the encapsulation opening, and each of the position adjustment mechanisms is connected to the portion of the transmission fiber that extends out of the encapsulation opening of the corresponding fiber optic sensing unit, and each of the position adjustment mechanisms can adjust the position of the fiber optic sensing unit inside the encapsulation shell; each of the position adjustment mechanisms is communicatively connected to the control module, and the control module can control the action of the corresponding position adjustment mechanism according to the image information.

6. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 5, characterized in that: It also includes an integration module, which is connected to the transmission optical fibers of each of the optical fiber sensing units; the control module is communicatively connected to the integration module, which can emit optical signals to the optical fiber sensing units to generate scattered light around the optical fiber sensing units; the integration module can also modulate the optical signals returned by the optical fiber sensing units into electrical signals and transmit them to the control module; the image information includes a structural image of the optical fiber sensing unit and a scattered light image.

7. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 1, characterized in that: The fixing module includes a fixing base and a fixing mold. The fixing mold is disposed on the fixing base and has at least one placement groove for placing the packaging shell.

8. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to claim 7, characterized in that: It also includes a cover seat, both of which are made of heat-insulating material; the cover seat has at least one mating part on the side facing the fixed seat; the cover seat covers the fixed seat, and each of the mating parts can cooperate with the corresponding placement groove to cover the packaging shell.

9. The automated integrated manufacturing equipment for functionalized multi-channel fiber optic sensors according to any one of claims 1-8, characterized in that: It also includes a waste liquid treatment module, and multiple encapsulation shells are placed on the fixed module. Each encapsulation shell is a four-way shell, and each encapsulation shell includes two opposite encapsulation ports and two opposite functional interfaces. The encapsulation shells are connected in series through the functional interfaces. One functional interface of the encapsulation shell on one side is connected and communicates with the functional module, and one functional interface of the encapsulation shell on the other side is connected and communicates with the waste liquid treatment module. The waste liquid treatment module is communicatively connected to the control module and is used to receive the treated liquid in each encapsulation shell.

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