A self-calibration based near infrared spectrometer

Abstract

The application discloses a kind of near infrared spectrometer based on self-calibration, including spectrometer body, analysis component, cleaning component and calibration component;The spectrometer body includes shell;The shell is sequentially opened with mutually communicating monitoring cavity, sample collection cavity and cleaning cavity from left to right inside;The analysis component includes sampling part, moving part and monitoring part;The sampling part includes rotating disc, drive end and sampling needle;The rotating disc is rotationally arranged on the shell by the drive end, and the sampling needle is used to extract sample, and the sample is introduced into the moving part of the sample collection cavity.Solve the technical means of automatic sampling, automatic sample and automatic detection in the prior art infrared spectrometer to improve detection efficiency, but due to the absence of corresponding automatic calibration mechanism, resulting in sampling disc cannot be accurately moved to detection end below in the automatic detection process, thereby affecting the accuracy of detection end technical problem.

Description

Technical Field

[0001] This invention relates to the field of infrared spectrometer technology, specifically to a self-calibrated near-infrared spectrometer. Background Technology

[0002] Near-infrared (NIR) spectroscopy utilizes electromagnetic radiation waves between the visible and mid-infrared ranges. The American Society for Testing and Materials (ASTM) defines the NIR spectral region as the 780nm-2526nm area, the first non-visible light region discovered in absorption spectroscopy. The NIR spectral region coincides with the absorption regions of the combination frequencies and harmonics of hydrogen-containing group vibrations in organic molecules. By scanning the NIR spectrum of a sample, characteristic information of hydrogen-containing groups in the organic molecules can be obtained. Furthermore, NIR spectroscopy offers advantages such as convenience, speed, efficiency, accuracy, low cost, non-destructive testing, no consumption of chemical reagents, and no environmental pollution. Therefore, this technology is gaining increasing popularity.

[0003] Chinese patent application CN115184292A proposes a "portable Fourier transform infrared spectrometer for rapid detection of microplastics." This device can automatically place samples, and its internal cleaning is very convenient and quick after detection. It can locate samples, allowing the camera to move and capture more comprehensive sample images with a short shooting cycle, enabling rapid detection. However, when detecting samples inside the device, the sampling plate needs to be moved axially within the device. But the device does not have a corresponding positioning calibration device, which means that in actual use, the detection end cannot be aligned with the sampling plate on the same axis, thus affecting the accuracy of the detection end.

[0004] To address this, we propose a self-calibrated near-infrared spectrometer. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a self-calibrated near-infrared spectrometer. This invention addresses the technical problem that existing infrared spectrometers, in order to improve detection efficiency, employ automatic sampling, automatic sample placement, and automatic detection techniques. However, due to the lack of a corresponding automatic calibration mechanism, the sampling disk cannot be accurately moved below the detection end during the automatic detection process, thus affecting the accuracy of the detection end.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] A self-calibrated near-infrared spectrometer includes a spectrometer body, an analysis component, a cleaning component, and a calibration component;

[0008] The spectrometer body includes a housing; inside the housing, from left to right, there are interconnected monitoring chamber, sample collection chamber and cleaning chamber;

[0009] The analytical assembly includes a sampling section, a moving section, and a monitoring section. The sampling section includes a rotating disk, a driving end, and a sampling needle. The rotating disk is rotatably mounted on the housing via the driving end. The sampling needle is used to extract the sample and guide it onto the moving section of the sample collection chamber. The moving section is movably connected to the housing and can move axially within the monitoring chamber, the sample collection chamber, and the cleaning chamber. The monitoring section is used to detect the sample on the moving section. The cleaning assembly is disposed within the cleaning chamber and is used to clean the moving section. The calibration assembly is installed within the housing and is used to calibrate the movement trajectory of the moving section.

[0010] In one embodiment, a control panel is fixed to the housing, and a touch display panel is fixed to the housing on the side closest to the control panel.

[0011] In one embodiment, the rotating disk has a plurality of sampling slots circumferentially arranged, and an extension plate is fixed at the lower end of the rotating disk, the end of which extends into the sample collection cavity; the outer circumferential surface of the extension plate has a plurality of toothed grooves that cooperate with the driving end.

[0012] In one embodiment, the driving end includes a first motor and a gear; the first motor is installed inside the sample collection chamber, the gear is connected to the output end of the first motor, and the outer peripheral surface of the gear meshes with the tooth groove.

[0013] In one embodiment, the sampling unit further includes a housing, a telescopic rod, a connecting plate, and a pump body; the housing is mounted on the housing and extends through the rotating disk; the telescopic rod is mounted on the housing, with its telescopic end extending into the housing; the connecting plate is slidably disposed within the housing and connected to the telescopic end of the telescopic rod, with the sampling needle connected to the end of the connecting plate; the pump body is mounted on the side of the connecting plate facing away from the telescopic rod, with a first conduit connected to the pump body's suction end, the first conduit communicating with the sampling needle; and a second conduit connected to the pump body's discharge end, the second conduit extending into the sample collection chamber and located above the moving part.

[0014] In one embodiment, the moving part includes a second motor, a screw, a screw block, an auxiliary rod, a slider, and a sampling plate; the motor is installed inside the monitoring chamber, the screw is installed on the output end of the second motor, one axial end of the screw extends into the cleaning chamber, the screw block is threadedly connected to the screw, the auxiliary rod is disposed on both sides of the screw, the slider is slidably connected to the auxiliary rod, and the sampling plate is installed on the screw block and the slider; the calibration component is installed on the slider.

[0015] In one embodiment, the monitoring unit includes a detection module, a data processing module, a transmission module, and a power supply module; the detection module is installed inside the monitoring cavity and is used to detect the sample on the moving part; the data processing module is used to process the sampling data of the detection module; the transmission module is used to transmit the processing results to the moving part; and the power supply module is used to provide power.

[0016] In one embodiment, the cleaning assembly includes a water pump, a nozzle, and a liquid extraction pipe; the water pump is installed inside the cleaning chamber, the nozzle is installed at the water supply end of the water pump, and is used to spray and clean the moving part; the liquid extraction pipe is installed at the water pump's suction end, and the end of the liquid extraction pipe extends to the bottom of the cleaning chamber.

[0017] In one embodiment, the calibration assembly includes an infrared receiving probe, a first infrared emitting probe, a second infrared emitting probe, and a third infrared emitting probe; the infrared receiving probe is mounted on the side of the slider; the first infrared emitting probe is mounted in the monitoring cavity; the second infrared emitting probe is mounted in the sample collection cavity; and the third infrared emitting probe is mounted in the cleaning cavity.

[0018] In one embodiment, the housing is provided with a drain outlet and a water inlet that communicate with the cleaning chamber.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] 1. Compared with the prior art, this invention sets up a monitoring chamber, a sample collection chamber, and a cleaning chamber inside the shell, maximizing the use of the internal space of the shell, and setting up corresponding equipment in different spaces. The rotating disk is rotatably set at the upper end of the shell, and sampling bottles can be placed on the rotating disk. The rotating disk is controlled by the drive end to rotate circumferentially on the shell, which facilitates the sampling needle to collect different samples from the sampling bottles and introduce the samples into the moving part. The moving part drives the samples from the sample collection chamber to the monitoring chamber, and the sample data is analyzed under the detection of the monitoring part. When the work is completed, the moving part moves from the monitoring chamber to the cleaning chamber, and the surface of the moving part is cleaned with the cooperation of the cleaning component to facilitate the next sampling. Moreover, during the movement of the moving part, the calibration component can accurately move the moving part to the designated position, which greatly improves the accuracy of the moving part during the movement process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 This is a front view of the invention;

[0023] Figure 3 This is a side view of the invention;

[0024] Figure 4 This is a schematic diagram of the monitoring unit assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly of the housing, telescopic rod, connecting plate, sampling needle and pump body of the present invention.

[0026] In the diagram: 1. Spectrometer body; 11. Housing; 111. Monitoring chamber; 112. Sample collection chamber; 113. Cleaning chamber; 12. Control panel; 13. Touch screen display panel; 2. Analytical components; 21. Sampling section; 211. Rotary disk; 212. Sampling slot; 213. Extension plate; 214. Drive end; 2141. First motor; 2142. Gear; 215. Housing; 216. Telescopic rod; 217. Connecting plate; 218. Sampling needle; 219. Pump body; 22. Moving part; 22 1. Second motor; 222. Screw; 223. Screw block; 224. Auxiliary rod; 225. Slider; 226. Sampling plate; 23. Monitoring unit; 231. Detection module; 232. Data processing module; 233. Transmission module; 234. Power supply module; 3. Cleaning assembly; 31. Water pump; 32. Nozzle; 33. Liquid extraction tube; 4. Calibration assembly; 41. Infrared receiving probe; 42. First infrared emitting probe; 43. Second infrared emitting probe; 44. Third infrared emitting probe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] Please see Figure 1 The present invention provides a self-calibrated near-infrared spectrometer, comprising a spectrometer body 1, an analysis component 2, a cleaning component 3, and a calibration component 4.

[0029] The spectrometer body 1 includes a housing 11; inside the housing 11, from left to right, there are interconnected monitoring chamber 111, sample collection chamber 112 and cleaning chamber 113.

[0030] The analysis component 2 includes a sampling section 21, a moving section 22, and a monitoring section 23. The sampling section 21 includes a rotating disk 211, a drive end 214, and a sampling needle 218. The rotating disk 211 is rotatably mounted on the housing 11 via the drive end 214. The sampling needle 218 is used to extract samples and guide them onto the moving section 22 of the sample collection chamber 112. The moving section 22 is movably connected to the housing 11 and can move axially within the monitoring chamber 111, the sample collection chamber 112, and the cleaning chamber 113. The monitoring section 23 is used to detect the samples on the moving section 22. The cleaning component 3 is disposed in the cleaning chamber 113 and is used to clean the moving section 22. The calibration component 4 is installed in the housing 11 and is used to calibrate the movement trajectory of the moving section 22.

[0031] The staff places the sampling bottle to be sampled on the rotating disk 211. The drive end 214 drives the rotating disk 211 to rotate circumferentially on the housing 11. During the rotation, the sampling needle 218 extracts the sample from any sampling bottle and guides it onto the moving part 22 in the sample collection chamber 112. The moving part 22 drives the collected sample to move axially and move it to the monitoring chamber 111, where it is located at the lower end of the monitoring part 23. The monitoring part 23 then detects the sample on the moving part 22. After the detection is completed, the surface of the moving part 22 is cleaned. The moving part 22 moves from the monitoring chamber 111 to the sample collection chamber 112, and then from the sample collection chamber 112 to the cleaning chamber 113. The surface of the moving part 22 is cleaned by the cleaning component 3. During the entire movement process, the calibration component 4 controls the stopping position of the moving part 22 in the monitoring chamber 111, the sample collection chamber 112 and the cleaning chamber 113, ensuring that the moving part 22 can effectively cooperate with the sampling needle 218, the monitoring part 23 and the cleaning component 3, avoiding positional deviations and greatly improving the accuracy of the moving part 22.

[0032] To improve the operability of the spectrometer body 1, please refer to Figure 2In a preferred embodiment, a control panel 12 is fixed on the housing 11, and a touch display panel 13 is fixed on the side of the housing 11 that is close to the control panel 12.

[0033] The control panel 12 is used to start or stop the entire spectrometer body 1, while the touch display panel 13 is for easy viewing of detection data and convenient operation by staff. The model of the touch display panel 13 is S22240T.

[0034] To improve the overall working efficiency of the rotating disk 211, please refer to... Figure 1 and Figure 2 In a preferred embodiment, the rotating disk 211 is provided with a plurality of sampling slots 212 in the circumferential direction, and an extension plate 213 is fixed at the lower end of the rotating disk 211. The end of the extension plate 213 extends into the sample collection cavity 112. The outer circumferential surface of the extension plate 213 is provided with a plurality of toothed grooves that cooperate with the drive end 214. The drive end 214 includes a first motor 2141 and a gear 2142. The first motor 2141 is installed in the sample collection cavity 112, and the gear 2142 is connected to the output end of the first motor 2141. The outer circumferential surface of the gear 2142 meshes with the toothed grooves.

[0035] The rotating disk 211 has at least seven sampling slots 212 for placing bottles, which can hold samples to be tested. The lower end of the rotating disk 211 is a solid annular extension plate 213, which extends into the housing 11 and is located in the sample collection chamber 112. The extension plate 213 has toothed grooves on its outer circumferential surface to facilitate its cooperation with the drive end 214. The drive end 214 is assembled from a first motor 2141 and a gear 2142. The first motor 2141 drives the gear 2142 to rotate, which in turn drives the extension plate 213 to move, thereby driving the entire rotating disk 211 to perform circular motion.

[0036] To improve the sampling efficiency of sampling needle 218, please refer to [link / reference]. Figure 1 , Figure 3 and Figure 5 In a preferred embodiment, the sampling unit 21 further includes a housing 215, a telescopic rod 216, a connecting plate 217, and a pump body 219; the housing 215 is mounted on the housing 215 and passes through the rotating disk 211; the telescopic rod 216 is mounted on the housing 215, and the telescopic end of the telescopic rod 216 extends into the housing 215; the connecting plate 217 is slidably disposed in the housing 215 and connected to the telescopic end of the telescopic rod 216; a sampling needle 218 is connected to the end of the connecting plate 217; the pump body 219 is mounted on the side of the connecting plate 217 facing away from the telescopic rod 216; the pump body 219 has a first conduit connected to its suction end, which communicates with the sampling needle 218; and a second conduit connected to its discharge end, which extends into the sample collection chamber 112 and is located above the moving part 22.

[0037] The housing 215 is fixed to the housing 11, and the rotating disk 211 has holes so that it can rotate around the housing 215. The position and height of the connecting plate 217 inside the housing 215 are controlled by the telescopic rod 216. The connecting plate 217 drives the sampling needle 218 to move up and down synchronously. When the rotating disk 211 rotates and the bottle is below the sampling needle 218, the telescopic rod 216 pushes the connecting plate 217 to move downward, so that the sampling needle 218 extends into the bottle. With the cooperation of the pump body 219 and the first conduit, the sample to be tested is extracted and guided to the sample collection chamber 112 through the second conduit, and then to the moving part 22. The moving part 22 transfers the sample to the monitoring chamber 111, where the monitoring part 23 prepares it for testing.

[0038] To improve the mobility of the moving unit 22, please refer to... Figure 1 and Figure 4 In a preferred embodiment, the moving part 22 includes a second motor 221, a screw 222, a screw block 223, an auxiliary rod 224, a slider 225, and a sampling plate 226. The second motor 221 is installed in the monitoring chamber 111, the screw 222 is installed on the output end of the second motor 221, one axial end of the screw 222 extends into the cleaning chamber 113, the screw block 223 is threadedly connected to the screw 222, the auxiliary rod 224 is disposed on both sides of the screw 222, the slider 225 is slidably connected to the auxiliary rod 224, and the sampling plate 226 is installed on the screw block 223 and the slider 225. A calibration component 4 is installed on the slider 225.

[0039] The second motor 221 drives the screw 222 to rotate. When the screw 222 rotates, it drives the screw block 223 to move axially on the screw 222. Auxiliary rods 224 are provided on both sides of the screw 222. Slider 225s are slidably connected to the auxiliary rods 224. There are two sliders 225s. Sampling plates 226 are fixed on both sliders 225s and the screw block 223. In this way, when the screw block 223 moves axially on the screw 222, it simultaneously drives the slider 225 to slide on the auxiliary rods 224, which greatly improves the movement efficiency of the entire sampling plate 226. The calibration component 4 can detect the movement trajectory of the sampling plate 226 and stop it at a designated location, so as to facilitate the sampling plate 226 to collect the sample guided by the sampling needle 218.

[0040] To improve the detection efficiency of the 23 pairs of samples in the monitoring department, please refer to [link / reference needed]. Figure 1 and Figure 4In a preferred embodiment, the monitoring unit 23 includes a detection module 231, a data processing module 232, a transmission module 233, and a power supply module 234; the detection module 231 is installed in the monitoring cavity 111 and is used to detect the sample on the moving part 22; the data processing module 232 is used to process the sampling data of the detection module 231, the transmission module 233 is used to transmit the processing results to the moving part, and the power supply module 234 is used to provide power.

[0041] The detection module 231 is used to detect samples, and the data processing module 232 processes the detection data and transmits it to the cloud through the transmission module 233. The power supply module 234 is used to supply power to the entire device to ensure the normal operation of the entire device.

[0042] To facilitate cleaning of the sampling plate 226 surface by cleaning component 3, please refer to [link / reference]. Figure 1 and Figure 4 In a preferred embodiment, the cleaning component 3 includes a water pump 31, a nozzle 32, and a liquid extraction pipe 33; the water pump 31 is installed inside the cleaning chamber 113, the nozzle 32 is installed at the water supply end of the water pump 31, and is used to spray and clean the moving part 22; the liquid extraction pipe 33 is installed at the water extraction end of the water pump 31, and the end of the liquid extraction pipe 33 extends to the bottom of the cleaning chamber 113; the housing 11 is provided with a drain port and a water inlet communicating with the cleaning chamber 113.

[0043] The entire cleaning chamber 113 can pre-store a certain amount of water. The water source inside the cleaning chamber 113 is extracted by the water pump 31 and the liquid extraction pipe 33 and sprayed in opposite directions through the nozzle 32. When the screw block 223 moves the sampling plate 226 to the cleaning chamber 113 and is located below the nozzle 32, the water pump 31 and the liquid extraction pipe 33 cooperate to spray the liquid from the nozzle 32 in opposite directions to rinse the surface of the sampling plate 226.

[0044] For convenient calibration of the displacement distance of sampling plate 226, please refer to [link / reference]. Figure 1 and Figure 3 In a preferred embodiment, the calibration component 4 includes an infrared receiving probe 41, a first infrared emitting probe 42, a second infrared emitting probe 43, and a third infrared emitting probe 44; the infrared receiving probe 41 is mounted on the side of the slider 225; the first infrared emitting probe 42 is mounted in the monitoring chamber 111; the second infrared emitting probe 43 is mounted in the sample collection chamber 112; and the third infrared emitting probe 44 is mounted in the cleaning chamber 113.

[0045] The infrared receiving probe 41 is mounted on the slider 225, while the first infrared emitting probe 42 is mounted in the monitoring chamber 111, the second infrared emitting probe 43 is mounted in the sample collection chamber 112, and the third infrared emitting probe 44 is mounted in the cleaning chamber 113. The infrared light emitted by the first infrared emitting probe 42 corresponds to the detection end of the detection module 231, the infrared light emitted by the second infrared emitting probe 43 corresponds to the second conduit, and the infrared light emitted by the third infrared emitting probe 44 corresponds to the nozzle 32. This allows the sampling plate 226 to automatically calibrate the corresponding stopping position in different chambers during movement, thereby greatly improving the positioning accuracy.

[0046] The calibration process includes the following steps:

[0047] S1. When the sampling needle 218 is ready to extract a sample, the screw block 223 and the slider 225 are positioned inside the monitoring cavity 111. The infrared receiving probe 41 on the side of the slider 225 receives the infrared light from the first infrared emitting probe 42, and the sampling plate 226 is in the initial state.

[0048] S2. When the sampling needle 218 draws the sampling liquid and the pump body 219 draws it to be introduced into the sample collection chamber 112, the second motor 221 controls the screw 222 to run. The screw 222 drives the sampling plate 226 and the slider 225 to move into the sample collection chamber 112, and the infrared receiving probe 41 receives the infrared light from the second infrared emitting probe 43. When the sampling plate 226 is located directly below the second conduit, the sampling plate 226 is in the sampling state.

[0049] S3. After sampling is completed, the second motor 221 controls the screw 222 to rotate in the opposite direction. The screw block 223 drives the sampling plate 226 to move into the monitoring cavity 111, and simultaneously drives the slider 225 to move on the auxiliary rod 224. When the infrared receiving probe 41 receives the light from the first infrared emitting probe 42, the sampling plate 226 is located below the detection module 231. At this time, the sampling plate 226 is in the state of waiting to be detected.

[0050] S4. When the entire process is completed and the staff needs to clean the sampling plate 226, the second motor 221 continues to control the screw 222, so that the screw 222 drives the screw block 223 to move, and the sampling plate 226 drives the slider 225 to move into the cleaning chamber 113, and the infrared receiving probe 41 is used to receive the third infrared emitting probe 44. When the sampling plate 226 is below the nozzle 32, the sampling plate 226 is in the state of waiting to be cleaned.

[0051] To better understand this invention, the following is combined with... Figures 1-5The working process of the self-calibrated near-infrared spectrometer of the present invention will be described in detail below: During use, the operator places the bottle in the sampling slot 212. The first motor 2141 drives the gear 2142 to rotate. The gear 2142, in conjunction with the annular extension plate 213, drives the entire rotating disk 211 to perform circular motion on the housing 11. During this motion, the telescopic rod 216 pushes the connecting plate 217 downward within the housing 215, extending its sampling needle 218 into the bottle. Liquid is drawn by the pump body 219 and the first conduit, and then introduced into the sample collection chamber 112 through the second conduit, dripping onto the sampling plate 226. The second motor 221 drives the energized screw 222 to move, which in turn moves the sampling plate 226. The sampling plate 226 then drives the slider 225 to slide on the auxiliary rod 224. Since the slider 225 is equipped with infrared... When the sampling plate 226 moves to the monitoring chamber 111, the infrared receiving probe 41 receives the light from the first infrared emitting probe 42, and the second motor 221 stops moving, so that the sampling plate 226 is located at the lower end of the detection module 231, and the detection module 231 detects the sample. When the sample needs to be collected again, it moves into the sample collection chamber 112. When the infrared receiving probe 41 receives the light from the second infrared emitting probe 43, the second motor 221 stops moving, and the sampling plate 226 is located directly below the second conduit. When the subsequent work is completed and the sampling plate 226 needs to be cleaned, the screw block 223 is moved into the cleaning chamber 113 by the screw 222, and the infrared receiving probe 41 receives the infrared light from the third infrared emitting probe 44, so that it stops below the nozzle 32, and the nozzle 32 sprays and cleans the surface of the sampling plate 226.

[0052] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A self-calibration based near infrared spectrometer, characterized by: Includes the spectrometer body, analysis components, cleaning components, and calibration components; The spectrometer body includes a housing; inside the housing, from left to right, there are interconnected monitoring chamber, sample collection chamber and cleaning chamber; The analytical assembly includes a sampling section, a moving section, and a monitoring section. The sampling section includes a rotating disk, a drive end, and a sampling needle. The rotating disk is rotatably mounted on the housing via the drive end. The sampling needle is used to extract the sample and guide it onto the moving section of the sample collection chamber. The moving section is movably connected to the housing and can move axially within the monitoring chamber, the sample collection chamber, and the cleaning chamber. The monitoring section is used to detect the sample on the moving section. A cleaning assembly is disposed within the cleaning chamber for cleaning the moving section. A calibration assembly is installed within the housing for calibrating the movement trajectory of the moving section. The sampling unit also includes a housing, a telescopic rod, a connecting plate, and a pump body; the housing is mounted on the housing and passes through the rotating disk; The telescopic rod is mounted on the housing, with its telescopic end extending into the housing. The connecting plate is slidably disposed within the housing and connected to the telescopic end of the telescopic rod. The sampling needle is connected to the end of the connecting plate. The pump body is mounted on the side of the connecting plate facing away from the telescopic rod. The pump body's suction end is connected to a first conduit, which communicates with the sampling needle. The pump body's discharge end is connected to a second conduit, which extends into the sample collection chamber and is located above the moving part. The moving part includes a second motor, a screw, a screw block, an auxiliary rod, a slider, and a sampling plate; the motor is installed inside the monitoring chamber, the screw is installed on the output end of the second motor, one axial end of the screw extends into the cleaning chamber, the screw block is threadedly connected to the screw, the auxiliary rod is disposed on both sides of the screw, the slider is slidably connected to the auxiliary rod, and the sampling plate is installed on the screw block and the slider; the calibration component is installed on the slider; The calibration assembly includes an infrared receiving probe, a first infrared emitting probe, a second infrared emitting probe, and a third infrared emitting probe; the infrared receiving probe is mounted on the side of the slider; the first infrared emitting probe is mounted in the monitoring cavity; and the second infrared emitting probe is mounted in the sample collection cavity. The third infrared emitting probe is installed in the cleaning chamber.

2. The self-calibration based near infrared spectrometer according to claim 1, characterized in that: A control panel is fixed to the housing, and a touch display panel is fixed to the side of the housing closest to the control panel.

3. The self-calibration based near infrared spectrometer according to claim 1, wherein: The rotating disk has several sampling slots circumferentially, and an extension plate is fixed at the lower end of the rotating disk. The end of the extension plate extends into the sample collection cavity. The outer circumferential surface of the extension plate has several toothed grooves that cooperate with the driving end.

4. The self-calibration based near infrared spectrometer according to claim 3, characterized in that: The driving end includes a first motor and a gear; the first motor is installed inside the sample collection chamber, the gear is connected to the output end of the first motor, and the outer peripheral surface of the gear meshes with the tooth groove.

5. The self-calibration based near infrared spectrometer according to claim 1, wherein: The monitoring unit includes a detection module, a data processing module, a transmission module, and a power supply module; the detection module is installed inside the monitoring cavity and is used to detect the sample on the moving part; the data processing module is used to process the sampling data of the detection module; the transmission module is used to transmit the processing results to the moving part; and the power supply module is used to provide power.

6. The self-calibration based near infrared spectrometer according to claim 1, wherein: The cleaning assembly includes a water pump, a nozzle, and a liquid extraction pipe; the water pump is installed inside the cleaning chamber, the nozzle is installed at the water supply end of the water pump, and is used to spray and clean the moving part; the liquid extraction pipe is installed at the water pump's suction end, and the end of the liquid extraction pipe extends to the bottom of the cleaning chamber.

7. The self-calibration based near infrared spectrometer according to claim 1, wherein: The housing has a drain outlet and a water inlet that communicate with the cleaning chamber.

Images