A real-time monitoring system based on Raman spectroscopy

Abstract

This invention discloses a real-time monitoring system based on Raman spectroscopy, comprising: a device interface module for controlling the connection and disconnection of the spectrometer, setting parameters, and acquiring data; a user interface module for user interaction, including data processing operations and displaying data processing results; and a data processing module including spectral preprocessing, feature extraction, and mathematical model algorithms. This invention utilizes non-invasive Raman spectroscopy technology to rapidly, accurately, and in real-time monitor and analyze the chemical components and structures in samples. Based on the photon scattering phenomenon caused by molecular vibrations and rotations, Raman spectroscopy, compared to traditional spectroscopic techniques, possesses rich chemical information and high specificity, enabling non-destructive analysis of molecular bonds, chemical components, and crystal structures in samples without sample preparation.

Description

Technical Field

[0001] This invention relates to the field of chemical composition monitoring technology, and in particular to a real-time monitoring system based on Raman spectroscopy. Background Technology

[0002] In fields such as scientific research, industrial production, and quality control, real-time monitoring of the chemical composition and structural changes of samples is crucial for understanding material properties, optimizing processes, and ensuring product quality.

[0003] Traditional real-time monitoring methods have some limitations, such as requiring sample processing or sampling, destructive testing of samples, and slow monitoring speed. In order to solve these problems, this application aims to develop a real-time monitoring system that can quickly, accurately, and in real-time monitor and analyze the chemical components and structure of samples through non-invasive monitoring technology. Summary of the Invention

[0004] The purpose of this invention is to propose a real-time monitoring system based on Raman spectroscopy, which can quickly, accurately, and in real-time monitor and analyze the chemical components and structure in samples.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A real-time monitoring system based on Raman spectroscopy includes:

[0007] The device interface module controls the connection and disconnection of the spectrometer, parameter settings, and data acquisition.

[0008] The user interface module interacts with the user, including data processing operations and the display of data processing results;

[0009] The data processing module includes spectral preprocessing, feature extraction, and mathematical model algorithms.

[0010] Preferably, the device interface module includes a hardware system, which has:

[0011] A laser source that provides a laser beam to excite the sample to generate Raman scattered light;

[0012] Optical components used to manipulate the laser beam and collect Raman scattered light from the sample;

[0013] A detector is used to collect the Raman scattered light signal of a sample, and is responsible for receiving and measuring the intensity of the scattered light and converting it into an electrical signal. Commonly used detectors include photodiodes and photomultiplier tubes.

[0014] A spectrometer is used to disperse and record the Raman scattering spectrum of a sample. It typically consists of a grating and a detector. The grating disperses light of different wavelengths at different angles to obtain spectral information of the sample, while the detector measures the intensity of light of different wavelengths.

[0015] Preferably, the hardware system further includes:

[0016] A rectangular block with a closed rectangular chamber inside;

[0017] The first U-shaped frame is fixedly installed below the rectangular block, forming an open space between it and the rectangular block;

[0018] The second U-shaped frame is inverted and fixedly installed inside the rectangular cavity, which divides the rectangular cavity into two parts: the beam path area and the liquid sample collection area.

[0019] A laser source is set on one side of the second U-shaped frame. A first filter, a collimating lens, and a first reflector are sequentially arranged in the path of the laser beam emitted from the laser source. A detector is set on the other side of the second U-shaped frame. A second reflector, a second filter, and a focusing lens are sequentially arranged in the path of the detector receiving the laser beam. The first reflector and the second reflector are symmetrically arranged and form a 90° angle with each other.

[0020] Preferably, a sample detection component is provided on the second U-shaped frame. The sample detection component is located in the middle section between the first reflector and the second reflector. The sample detection component includes a fixing block fixed on the second U-shaped frame. A circular chamber is opened in the fixing block. A rotatable flipping component is provided in the circular chamber. A detection ring is fixedly connected in the circular chamber. The detection ring has two openings, an upper and a lower opening. As the flipping component rotates, the liquid sample in the detection ring is in an intermittent flow state.

[0021] Preferably, the flipping component includes a rotating ring fitted onto the outer ring of the detection ring. The rotating ring has two notches, one above the other. Two rotating blocks are also fixedly connected to the outer ring of the rotating ring. The two rotating blocks are symmetrically arranged with the virtual connecting line between the two notches. One end of the rotating block is fitted into the inner ring of the circular cavity. A ring gear is fixedly connected to the rotating ring coaxially. A servo motor is mounted on the fixed block. The output shaft of the servo motor is fixedly connected to a drive gear. The drive gear and the ring gear mesh with each other. The horizontally overlapping area between the fixed block and the detection ring is made of glass.

[0022] Preferably, the top surface of the fixing block contacts the top surface of the rectangular cavity. The fixing block has a vertical circular groove, the bottom end of which connects to the circular cavity. The top end of the groove extends upward and penetrates the top surface of the rectangular block. A circular tube is fixedly connected to the top surface of the rectangular block. The inner hole of the circular tube corresponds to the circular groove. A circular cap is threaded to the top end of the circular tube. The outer wall of the circular tube has an external thread, and the inner wall of the circular cap has an internal thread. By opening the circular cap, the liquid sample can be poured into the circular tube and fall into the circular cavity through the circular groove.

[0023] Preferably, a connecting block is fixedly connected to the bottom surface of the fixed block. The connecting block has a through-flow groove, and the top of the flow groove is connected to a circular chamber. An opening and closing component is provided inside the flow groove to control the flow state of the flow groove. The opening and closing component includes two hydraulic cylinders fixedly installed on the bottom surface of the fixed block. The output shaft of the hydraulic cylinder is fixedly connected to the opening and closing block. The opening and closing block has a small block with a smaller thickness and a large block with a thicker thickness. The small block passes through the connecting block and is slidably and sealingly connected to the connecting block. The large block is located inside the flow groove. When the two large blocks collide with each other, the flow groove is closed, and the liquid sample in the circular chamber cannot flow out. The bottom end of the connecting block extends to the second U-shaped frame, so that the flow groove is connected to the liquid sample collection area.

[0024] Preferably, a perforation is formed on the bottom surface of the rectangular block, with the top of the perforation communicating with the liquid sample collection area. A blocking component is provided at the bottom of the perforation, including a rotating plate rotatably connected to the bottom surface of the rectangular block. A rubber block is fixedly connected to the upper side of the rotating plate. The rubber block is circular and its diameter is larger than the diameter of the perforation. A driven gear is fixedly connected to the rotating plate. A straight cylinder is fixedly connected to the first U-shaped frame. A rotating shaft is coaxially arranged inside the straight cylinder and rotatably connected to the first U-shaped frame. A torsion spring is provided inside the straight cylinder and sleeved around the rotating shaft. The two ends of the torsion spring are respectively connected to the straight cylinder and the rotating shaft. A drive disc is fixedly sleeved on the rotating shaft. A toothed groove is formed on the outer ring of the drive disc so that the drive disc meshes with the driven gear. The rubber block can be driven to disengage from the bottom of the perforation by moving the drive disc, so that the sample in the liquid sample collection area can be discharged normally.

[0025] A method for using the hardware system in a real-time Raman spectroscopy monitoring system includes the following steps:

[0026] Start the servo motor to drive the rotating ring to rotate, so that the notch and opening are offset from each other, with one of the rotating blocks at the top. Open the round cover and pour the liquid sample into the round tube until the liquid sample fills both sides of the two rotating blocks.

[0027] The rotating ring continues to rotate, causing the liquid sample on one side of the two rotating blocks to enter the detector ring from the notch to the opening using gravity. At this moment, the beam of light emitted by the laser source passes through the liquid sample to excite the sample to produce Raman scattered light.

[0028] The intermittent rotation of the rotating ring causes the liquid sample inside the detection ring to flow and change periodically;

[0029] When the hydraulic cylinder is activated, the two opening and closing blocks separate from each other, and the liquid sample in the circular chamber flows into the outflow trough and accumulates in the liquid sample collection area.

[0030] Turning the drive disc rotates the driven gear, which in turn rotates the rotating plate, causing the rubber block to disengage from the discharge hole, thus discharging the liquid sample accumulated in the liquid sample collection area.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. This invention utilizes non-invasive Raman spectroscopy to rapidly, accurately, and in real-time monitor and analyze the chemical components and structure of samples. Based on the photon scattering phenomenon caused by molecular vibration and rotation, Raman spectroscopy offers rich chemical information and high specificity compared to traditional spectroscopic techniques. It allows for non-destructive analysis of molecular bonds, chemical components, and crystal structures in samples without the need for sample preparation.

[0033] 2. In this invention, a servo motor is used to drive the rotating ring to rotate, thereby intermittently exporting and filling the liquid sample in the detection ring, and periodically changing the liquid sample in the detection ring, so that the monitoring system can perform sampling monitoring of the liquid sample, avoiding the difficulty in more comprehensive monitoring of the liquid sample due to the poor fluidity of the liquid sample when it is left to stand. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the hardware system structure of a real-time monitoring system based on Raman spectroscopy proposed in this invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure within the rectangular cavity;

[0036] Figure 3 for Figure 2 A front view structural diagram;

[0037] Figure 4 This is a schematic diagram of the internal structure of a fixed block in the hardware system of a real-time monitoring system based on Raman spectroscopy proposed in this invention.

[0038] Figure 5 for Figure 4 A structural diagram from another perspective;

[0039] Figure 6 This is a schematic diagram of the detector ring, rotating ring, ring gear, and rotating block in the hardware system of a real-time monitoring system based on Raman spectroscopy proposed in this invention.

[0040] Figure 7 This is a schematic diagram of the connecting block and two opening / closing blocks in the hardware system of a real-time monitoring system based on Raman spectroscopy proposed in this invention.

[0041] Figure 8 This is a schematic diagram of the structure between the transfer plate and the active disk in the hardware system of a real-time monitoring system based on Raman spectroscopy proposed in this invention;

[0042] Figure 9This is a schematic diagram of the cross-sectional structure of the active disk and cylinder in the hardware system of a real-time monitoring system based on Raman spectroscopy proposed in this invention.

[0043] Figure 10 This is a schematic diagram of the modules of a real-time monitoring system based on Raman spectroscopy proposed in this invention;

[0044] Figure 11 This is a schematic diagram of the data processing flow in a real-time monitoring system based on Raman spectroscopy proposed in this invention.

[0045] In the diagram: 1. Rectangular block; 2. Rectangular chamber; 3. First U-shaped frame; 4. Second U-shaped frame; 5. Beam path area; 6. Liquid sample collection area; 7. Laser source; 8. First filter; 9. Collimating lens; 10. First reflecting mirror; 11. Detector; 12. Second reflecting mirror; 13. Second filter; 14. Focusing lens; 15. Fixing block; 16. Circular chamber; 17. Detector ring; 18. Opening; 19. Rotating ring; 20. Notch; 21. Rotating block; 23. Ring gear; 24. Servo motor; 25. Drive gear; 26. Glass lens; 27. Circular groove; 28. Circular tube; 29. ​​Circular cover; 30. Connecting block; 31. Outflow groove; 32. Hydraulic cylinder; 33. Opening and closing block; 34. Small block; 35. Large block; 36. Drill hole; 37. Rotating plate; 38. Rubber block; 39. Driven gear; 40. Straight cylinder; 41. Rotating shaft; 42. Torsion spring; 43. Drive disc; 44. Gear groove. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] Reference Appendix Figure 1 - Appendix Figure 11 A real-time monitoring system based on Raman spectroscopy includes a device interface module, a user interface module, and a data processing module. The device interface module is responsible for disconnecting the Raman spectrometer, setting parameters, and acquiring data. The user interface module is responsible for interacting with the user, including data processing-related operations and displaying data processing results. The data processing module includes spectral preprocessing, feature extraction, and mathematical model algorithms.

[0048] The device interface module includes a hardware system, which has:

[0049] A laser source 7 provides a laser beam to excite the sample to generate Raman scattered light;

[0050] Optical components used to manipulate the laser beam and collect Raman scattered light from the sample;

[0051] Detector 11 is used to collect the Raman scattered light signal of the sample, and is responsible for receiving and measuring the intensity of the scattered light and converting it into an electrical signal. Commonly used detectors 11 include photodiodes and photomultiplier tubes.

[0052] A spectrometer is used to disperse and record the Raman scattering spectrum of a sample. It typically consists of a grating and a detector 11. The grating disperses light of different wavelengths at different angles to obtain spectral information of the sample, while the detector 11 is responsible for measuring the intensity of light of different wavelengths.

[0053] Data processing flow:

[0054] Step 1: Data acquisition, Raman scattering spectrum data of the sample are acquired through detector 11;

[0055] The second step is spectral preprocessing, which involves preprocessing the acquired raw spectral data, including background correction, noise reduction, and signal enhancement, in order to reduce interference and improve signal quality.

[0056] The third step is feature extraction, which extracts useful features from the preprocessed spectral data, such as peak position, peak intensity, and peak shape.

[0057] Step 4: Data dimensionality reduction. The extracted feature data is processed to reduce the dimensionality of the data and redundant information, thereby improving the efficiency and accuracy of subsequent analysis.

[0058] Step 5: Quantitative analysis. The established quantitative analysis model is used to process the dimensionality-reduced feature data to obtain the concentration or content of the target component in the sample.

[0059] Establishment of a quantitative analysis model:

[0060] Step 1: Preparation of sample dataset. Collect a set of samples with known composition and concentration, and collect their Raman spectral data as a training set.

[0061] The second step is feature selection, which involves choosing appropriate features from the spectral data in the training set. These features should be related to the concentration of the target compound or component.

[0062] Step 3: Train the model. Use machine learning or statistical methods to build a quantitative analysis model based on the features of the training set and the known concentrations.

[0063] Step 4: Model optimization. The established model is optimized and its parameters are tuned to improve the accuracy and stability of the prediction.

[0064] Step 5: Model validation. Validate the model using a separate set of sample datasets to evaluate its predictive performance.

[0065] Step 6: Model application. The optimized and validated model is applied to the Raman real-time monitoring system to achieve quantitative analysis of the chemical composition or molecular structure of unknown samples.

[0066] System Algorithm:

[0067] Data preprocessing algorithms: normalization algorithms (min-max standardization, zero-mean standardization), filtering and denoising algorithms (moving mean filtering, SG filtering), baseline correction algorithms (local extremum median method, polynomial fitting method), and peak removal algorithms (median filtering method, Hampel filtering method).

[0068] Feature extraction algorithms: amplitude method, first derivative method, second derivative method, continuous wavelet transform method, dual-scale correlation algorithm;

[0069] Spectral discrimination algorithms: methods based on distance metric, similarity function, matching spectral peaks, and a hybrid method based on correlation coefficient and spectral peak matching;

[0070] Mathematical model building algorithms: Univariate linear regression (SLR), multiple linear regression (MLR), principal component analysis (PCA), partial least squares (PLS), deep learning (TensorFlow), support vector machine (SVM).

[0071] Through data processing and system algorithms, useful information can be extracted from complex Raman spectral data for real-time analysis and monitoring. This enables rapid identification and quantitative analysis of target substances. The monitored data and analysis results can be used as crucial inputs for feedback control, allowing for real-time regulation of the monitored object. Integration with a feedback control system allows for precise control and adjustment of target substances to meet specific requirements or achieve optimized effects. Raman spectroscopy-based real-time monitoring systems have applications in many fields, such as food safety, environmental monitoring, and pharmaceutical quality control. Whether for real-time quality monitoring in industrial production or safety testing in daily life, this system has broad application prospects, providing real-time monitoring and early warning functions. The system can monitor the concentration, composition, and trends of target substances in real time and issue timely warnings when anomalies are detected, providing users with timely decision support and intervention opportunities to reduce risks and losses.

[0072] The hardware system also includes:

[0073] Rectangular block 1, with a closed rectangular chamber 2 inside;

[0074] The first U-shaped frame 3 is fixedly installed below the rectangular block 1, forming an open space between it and the rectangular block 1;

[0075] The second U-shaped frame 4 is inverted and fixedly installed inside the rectangular chamber 2, so that the rectangular chamber 2 is divided into two parts, namely the beam path area 5 and the liquid sample collection area 6.

[0076] In this configuration, a laser source 7 is set on one side of the second U-shaped frame 4. A first filter 8, a collimating lens 9, and a first reflector 10 are sequentially arranged in the path of the laser beam emitted by the laser source 7. A detector 11 is set on the other side of the second U-shaped frame 4. A second reflector 12, a second filter 13, and a focusing lens 14 are sequentially arranged in the path of the detector 11 receiving the laser beam. The first reflector 10 and the second reflector 12 are symmetrically arranged and form a 90° angle with each other. Thus, the laser source 7 emits a vertical beam from bottom to top, and the detector 11 receives the vertical beam from directly above it.

[0077] A sample detection component is disposed on the second U-shaped frame 4. The sample detection component is located in the middle section between the first reflector 10 and the second reflector 12. The sample detection component includes:

[0078] A fixing block 15 is fixed on the second U-shaped frame 4. A circular chamber 16 is opened inside the fixing block 15. A rotatable flipping component is set inside the circular chamber 16. A detection ring 17 is fixedly connected inside the circular chamber 16. The detection ring 17 has two openings 18, one above the other. As the flipping component rotates, the liquid sample inside the detection ring 17 is in an intermittent flow state.

[0079] The flipping component includes a rotating ring 19 fitted onto the outer ring of the detection ring 17. The rotating ring 19 has two notches 20, one above the other. Two rotating blocks 21 are also fixedly connected to the outer ring of the rotating ring 19. The two rotating blocks 21 are symmetrically arranged with the virtual connection line between the two notches 20. One end of the rotating block 21 is in contact with the inner ring of the circular chamber 16. The rotating ring 19 is coaxially fixedly connected to a ring gear 23. A servo motor 24 is mounted on a fixed block 15. The output shaft of the servo motor 24 is fixedly connected to a drive gear 25. The drive gear 25 and the ring gear 23 mesh with each other to drive the rotating ring 19 to rotate and stop. The horizontally overlapping area between the fixed block 15 and the detection ring 17 uses a glass lens 26 to allow the light beam to pass through the liquid sample.

[0080] The top surface of the fixing block 15 contacts the top surface of the rectangular chamber 2. The fixing block 15 has a vertical circular groove 27. The bottom end of the circular groove 27 is connected to the circular chamber 16. The top end of the circular groove 27 extends upward and penetrates the top surface of the rectangular block 1. A circular tube 28 is fixedly connected to the top surface of the rectangular block 1. The inner hole of the circular tube 28 corresponds to the circular groove 27. The top end of the circular tube 28 is threaded to a circular cap 29. The outer wall of the circular tube 28 is provided with external threads, and the inner wall of the circular cap 29 is provided with internal threads. By opening the circular cap 29, the liquid sample can be poured into the circular tube 28 and fall into the circular chamber 16 through the circular groove 27.

[0081] The bottom surface of the fixed block 15 is fixedly connected to the connecting block 30. The connecting block 30 has an outflow groove 31 that runs vertically through it. The top of the outflow groove 31 is connected to the circular chamber 16. An opening and closing component is provided in the outflow groove 31 to control the flow state of the outflow groove 31. The opening and closing component includes two hydraulic cylinders 32 fixedly installed on the bottom surface of the fixed block 15. The output shaft of the hydraulic cylinders 32 is fixedly connected to the opening and closing block 33. The opening and closing block 33 has a small block 34 with a smaller thickness and a large block 35 with a larger thickness. The small block 34 runs through the connecting block 30 and is slidably and sealingly connected to the connecting block 30. The large block 35 is located inside the outflow groove 31. When the two large blocks 35 collide with each other, the outflow groove 31 is closed, and the liquid sample in the circular groove 27 chamber cannot flow out. The bottom end of the connecting block 30 extends to the second U-shaped frame 4, so that the outflow groove 31 is connected to the liquid sample collection area 6.

[0082] A perforation 36 is formed on the bottom surface of the rectangular block 1. The top of the perforation 36 communicates with the liquid sample collection area 6. A blocking component is provided at the bottom of the perforation 36. The blocking component includes a rotating plate 37 rotatably connected to the bottom surface of the rectangular block 1. A rubber block 38 is fixedly connected to the upper side of the rotating plate 37. The rubber block 38 is circular and its diameter is larger than the diameter of the perforation 36. A driven gear 39 is fixedly connected to the rotating plate 37. A straight cylinder 40 is fixedly connected to the first U-shaped frame 3. A rotating shaft 41 is coaxially arranged inside the straight cylinder 40. Shaft 41 is rotatably connected to the first U-shaped frame 3. A torsion spring 42 is installed inside the straight cylinder 40. The torsion spring 42 is sleeved around the rotating shaft 41. The two ends of the torsion spring 42 are respectively connected to the straight cylinder 40 and the rotating shaft 41. The rotating shaft 41 is fixedly sleeved with the active disk 43. The outer ring of the active disk 43 has a toothed groove 44, so that the active disk 43 is meshed with the driven gear 39. The rubber block 38 can be driven to disengage from the bottom of the discharge hole 36 by moving the active disk 43, so that the sample in the liquid sample collection area 6 can be discharged normally.

[0083] Working principle:

[0084] Start the servo motor 24 to drive the rotating ring 19 to rotate, so that the notch 20 and the opening 18 are offset from each other, and one of the rotating blocks 21 is directly above. Open the round cover 29 and pour the liquid sample into the round tube 28 until the liquid sample fills both sides of the two rotating blocks 21.

[0085] Continue to drive the rotating ring 19 to rotate, so that the liquid sample on one side of the two rotating blocks 21 enters the detector ring 17 from the notch 20 to the opening 18 by gravity. At this moment, the beam emitted by the laser source 7 passes through the liquid sample to excite the sample to generate Raman scattered light.

[0086] The intermittent rotation of the rotating ring 19 causes the liquid sample inside the detection ring 17 to flow and change periodically;

[0087] Start the hydraulic cylinder 32 to separate the two opening and closing blocks 33 from each other, and the liquid sample in the circular chamber 16 flows into the outflow groove 31 and accumulates in the liquid sample collection area 6.

[0088] Turning the drive disc 43 causes the driven gear 39 to rotate, which in turn causes the rotating plate 37 to rotate, causing the rubber block 38 to disengage from the discharge hole 36, thus discharging the liquid sample accumulated in the liquid sample collection area 6.

[0089] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A real-time monitoring system based on Raman spectroscopy, characterized in that, include: The device interface module controls the connection and disconnection of the spectrometer, parameter settings, and data acquisition. The user interface module interacts with the user, including data processing operations and the display of data processing results; The data processing module includes spectral preprocessing, feature extraction, and mathematical model algorithms; The hardware system also includes: A rectangular block (1) has a closed rectangular chamber (2) inside; The first U-shaped frame (3) is fixedly installed below the rectangular block (1), forming an open space between it and the rectangular block (1); The second U-shaped frame (4) is inverted and fixedly installed inside the rectangular chamber (2), so that the rectangular chamber (2) is divided into two parts, namely the beam path area (5) and the liquid sample collection area (6). In this design, a laser source (7) is set on one side of the second U-shaped frame (4), and a first filter (8), a collimating lens (9), and a first reflector (10) are set in sequence along the path of the laser beam emitted by the laser source (7). A detector (11) is set on the other side of the second U-shaped frame (4), and a second reflector (12), a second filter (13), and a focusing lens (14) are set in sequence along the path of the detector (11) receiving the laser beam. The first reflector (10) and the second reflector (12) are symmetrically arranged and form a 90° angle with each other. A sample detection component is set on the second U-shaped frame (4). The sample detection component is located in the middle section between the first reflector (10) and the second reflector (12). The sample detection component includes a fixing block (15) fixed on the second U-shaped frame (4). A circular chamber (16) is opened in the fixing block (15). A rotatable flipping component is set in the circular chamber (16). A detection ring (17) is fixedly connected in the circular chamber (16). The detection ring (17) has two openings (18) at the top and bottom. As the flipping component rotates, the liquid sample in the detection ring (17) is in an intermittent flow state. The flipping component includes a rotating ring (19) fitted onto the outer ring of the detection ring (17). The rotating ring (19) has two notches (20) at the top and bottom. Two rotating blocks (21) are also fixedly connected to the outer ring of the rotating ring (19). The two rotating blocks (21) are symmetrically arranged with the virtual connection line of the two notches (20) at the top and bottom. One end of the rotating block (21) is in contact with the inner ring of the circular chamber (16). The rotating ring (19) is coaxially fixedly connected to a ring gear (23). A servo motor (24) is installed on the fixed block (15). The output shaft of the servo motor (24) is fixedly connected to a drive gear (25). The drive gear (25) and the ring gear (23) mesh with each other. The horizontal overlapping area between the fixed block (15) and the detection ring (17) is made of glass lens (26). The top surface of the fixing block (15) is in contact with the top surface of the rectangular chamber (2). The fixing block (15) has a vertical circular groove (27). The bottom end of the circular groove (27) is connected to the circular chamber (16). The top end of the circular groove (27) extends upward and penetrates the top surface of the rectangular block (1). A circular tube (28) is fixedly connected to the top surface of the rectangular block (1). The inner hole of the circular tube (28) corresponds to the circular groove (27). The top end of the circular tube (28) is threaded to a circular cover (29). The outer wall of the circular tube (28) is provided with an external thread, and the inner wall of the circular cover (29) is provided with an internal thread. By opening the circular cover (29), the liquid sample can be poured into the circular tube (28) and fall into the circular chamber (16) through the circular groove (27).

2. The real-time monitoring system based on Raman spectroscopy according to claim 1, characterized in that, The device interface module includes a hardware system, which has: A laser source (7) provides a laser beam to excite the sample to generate Raman scattered light; Optical components used to manipulate the laser beam and collect Raman scattered light from the sample; The detector (11) is used to collect the Raman scattered light signal of the sample and is responsible for receiving and measuring the intensity of the scattered light and converting it into an electrical signal. The detector (11) includes a photodiode and a photomultiplier tube. The spectrometer is used to disperse and record the Raman scattering spectrum of the sample. It consists of a grating and a detector (11). The grating is used to disperse light of different wavelengths into different angles to obtain the spectral information of the sample. The detector (11) measures the intensity of light of different wavelengths.

3. The real-time monitoring system based on Raman spectroscopy according to claim 2, characterized in that, A connecting block (30) is fixedly connected to the bottom surface of the fixed block (15). The connecting block (30) has an outflow groove (31) that runs vertically through the bottom. The top of the outflow groove (31) is connected to a circular chamber (16). An opening and closing component is provided inside the outflow groove (31) to control the flow state of the outflow groove (31). The opening and closing component includes two hydraulic cylinders (32) fixedly installed on the bottom surface of the fixed block (15). The output shaft of the hydraulic cylinders (32) is fixedly connected to the opening and closing block (33). The opening and closing block (33) has a thickness of Smaller block (34) and thicker block (35) are connected. The smaller block (34) passes through the connecting block (30) and is slidably sealed to the connecting block (30). The larger block (35) is located inside the outflow groove (31). When the two larger blocks (35) collide with each other, the outflow groove (31) is closed, and the liquid sample in the chamber of the circular groove (27) cannot flow out. The bottom end of the connecting block (30) extends to the second U-shaped frame (4), so that the outflow groove (31) is connected to the liquid sample collection area (6).

4. The real-time monitoring system based on Raman spectroscopy according to claim 3, characterized in that, A perforation (36) is made on the bottom surface of the rectangular block (1). The top of the perforation (36) is connected to the liquid sample collection area (6). A blocking component is provided at the bottom of the perforation (36). The blocking component includes a rotating plate (37) that is rotatably connected to the bottom surface of the rectangular block (1). A rubber block (38) is fixedly connected to the upper side of the rotating plate (37). The rubber block (38) is circular and its diameter is larger than the diameter of the perforation (36). A driven gear (39) is fixedly connected to the rotating plate (37). A straight cylinder (40) is fixedly connected to the first U-shaped frame (3). A rotating shaft (41) is coaxially arranged inside the straight cylinder (40). 41) Rotatably connected to the first U-shaped frame (3), a torsion spring (42) is provided inside the straight cylinder (40), the torsion spring (42) is sleeved on the outside of the rotating shaft (41), the two ends of the torsion spring (42) are respectively connected to the straight cylinder (40) and the rotating shaft (41), the rotating shaft (41) is fixedly sleeved on the active disk (43), the outer ring of the active disk (43) is provided with a toothed groove (44), so that the active disk (43) is meshed with the driven gear (39), and the rubber block (38) can be driven to disengage from the bottom of the drain hole (36) by moving the active disk (43), so that the sample in the liquid sample collection area (6) can be discharged normally.

5. The method of using the hardware system in a real-time monitoring system based on Raman spectroscopy according to claim 4, characterized in that, Includes the following steps: Start the servo motor (24) to drive the rotating ring (19) to rotate, so that the notch (20) and the opening (18) are offset from each other, and one of the rotating blocks (21) is directly above. Open the round cover (29) and pour the liquid sample into the round tube (28) until the liquid sample fills both sides of the two rotating blocks (21). Continue to drive the rotating ring (19) to rotate, so that the liquid sample on one side of the two rotating blocks (21) enters the detector ring (17) from the notch (20) to the opening (18) by gravity. At this moment, the beam emitted by the laser source (7) passes through the liquid sample to excite the sample to generate Raman scattering light. The intermittent rotation of the rotating ring (19) causes the liquid sample in the detection ring (17) to flow and change periodically; Start the hydraulic cylinder (32) to separate the two opening and closing blocks (33) from each other, and the liquid sample in the circular chamber (16) flows into the outflow groove (31) and accumulates in the liquid sample collection area (6). Turning the drive plate (43) causes the driven gear (39) to rotate, which in turn causes the rotating plate (37) to rotate, causing the rubber block (38) to disengage from the drain hole (36), and the liquid sample accumulated in the liquid sample collection area (6) is discharged.

Images