Experiment table and detection method for rotatably detecting near infrared spectrum and diameter of sugar-core apple

Abstract

The invention relates to the technical field of diameter detection, in particular to an experiment table and detection method for rotationally detecting the near infrared spectrum and diameter of a sugar-core apple, and the experiment table comprises a frame, a supporting assembly, a rotating assembly and a sensing assembly; a distance sensor is arranged on the inner top wall of the frame, the mounting end of the distance sensor is fixedly connected with the inner top wall of the frame, the detection end of the distance sensor faces downwards, a halogen lamp is arranged at the inner top of the frame, and the two supporting assemblies are arranged at the inner bottom of the frame and are symmetrically arranged with the axis of the frame as the axis. The tops of the two supporting assemblies are fixedly connected with the bottom of the test bed, the halogen lamp relay and the control panel are arranged on the test bed, the rotating assembly is arranged on the test bed, the induction assembly is arranged corresponding to the rotating assembly, and the induction assembly is arranged at the bottom of the test bed. The device can be widely applied to multiple fields of industrial production, scientific research experiments and the like, and meets the requirements of near infrared spectrum nondestructive testing and diameter measurement in different scenes.

Description

Technical Field

[0001] The invention relates to the technical field of near-infrared spectrum nondestructive testing, and in particular to an experimental platform and a testing method for rotatingly testing the near-infrared spectrum and diameter of a candied apple. Background Art

[0002] In the fields of industrial production and scientific research, it is crucial to implement near-infrared spectroscopy nondestructive testing of target objects. In traditional near-infrared spectroscopy nondestructive testing, the body of the sugar-core apple is often tested in a fixed posture, and its external diameter is often ignored. This makes traditional near-infrared spectroscopy nondestructive testing affected by the uneven distribution of internal materials and diameter changes of the object, resulting in detection errors.

[0003] In view of the specific problem that traditional spectral detection methods are difficult to avoid interference from uneven distribution of materials inside objects and lack of diameter detection steps, it is particularly important to develop a non-contact diameter detection method based on near-infrared spectroscopy technology. This method can overcome the shortcomings of traditional non-destructive testing methods through rotation detection, realize accurate non-destructive testing of non-uniform materials inside objects, obtain the diameter of the sugar core apple, and ensure the accuracy of non-destructive testing. Summary of the invention

[0004] In view of this, the present invention aims at the deficiencies of the prior art and proposes a test bench and a detection method for rotating detection of the near-infrared spectrum and diameter of candied apples, aiming to solve at least one of the problems raised by the above background technology.

[0005] In a first aspect, the present invention provides a rotating test bench for detecting near-infrared spectra and diameters of candied apples, comprising: a frame, a distance sensor is arranged on the top wall of the frame, a mounting end of the distance sensor is fixedly connected to the top wall of the frame, a detection end of the distance sensor is arranged downward, and a halogen lamp is arranged on the top of the frame;

[0006] A support assembly, the support assembly is arranged at the bottom of the frame, two support assemblies are arranged symmetrically with the axis of the frame as the axis, the tops of the two support assemblies are fixedly connected to the bottom of the test bench, and a halogen lamp relay and a control panel are arranged on the test bench;

[0007] A rotating assembly, wherein the rotating assembly is disposed on the test bench;

[0008] The sensing component is arranged corresponding to the rotating component and is arranged at the bottom of the test bench.

[0009] In some embodiments, the frame is a cubic frame structure, a U-shaped frame is arranged inside the frame, the U-shaped frame opening is arranged downward, the outer diameter of the U-shaped frame matches the inner diameter of the frame, the outer wall of the U-shaped frame is fixedly connected to the inner wall of the frame, the frame coincides with the axis line of the U-shaped frame, the distance sensor is arranged on the inner wall of the U-shaped frame, the mounting end of the distance sensor is fixedly connected to the inner wall of the U-shaped frame, two halogen lamps are symmetrically arranged with the distance sensor as the axis, and the two mounting ends of the halogen lamps are fixedly connected to the inner wall of the U-shaped frame, and the light wavelength of the halogen lamp is 260-850nm.

[0010] In some embodiments, the support assembly comprises:

[0011] A connecting column, wherein the connecting column is arranged at the bottom of the frame and is arranged horizontally, and both ends of the connecting column are respectively fixedly connected to the inner wall of the frame;

[0012] The supporting columns are two in a symmetrical manner with the axis of the connecting column as the axis, and the bottoms of the two supporting columns are fixedly connected to the top surfaces of the connecting columns. The two supporting columns are arranged perpendicular to the connecting columns, and the tops of the two supporting columns are fixedly connected to the bottom surface of the test bench.

[0013] In some embodiments, the test bench is horizontally arranged, and the side walls of the test bench are fixedly connected to the inner wall of the frame and the inner wall of the U-shaped frame, the halogen lamp relay and the control panel are arranged on the top surface of the test bench, and the bottom mounting end of the halogen lamp relay and the bottom mounting end of the control panel are fixedly connected to the top surface of the test bench.

[0014] In some embodiments, the rotating assembly comprises:

[0015] A steering gear, wherein the steering gear is arranged at the bottom of the test bench, the mounting end of the steering gear is fixedly connected to the bottom of the test bench, the output shaft of the steering gear is meshedly connected to the rotating end of the reducer through gears, the top of the rotating end of the reducer passes through the test bench and extends to the top of the test bench, and the top of the rotating end of the reducer is fixedly connected with a first rotating gear, the first rotating gear is horizontally arranged, and the mounting end of the reducer is fixedly connected to the bottom of the test bench;

[0016] A rotating base, wherein the rotating base is arranged on one side of the first rotating gear, the bottom of the rotating base is fixedly connected to the top of the test bench, a second rotating gear is sleeved around the side wall of the rotating end at the top of the rotating base, the inner wall of the second rotating gear is fixedly connected to the side wall of the rotating end at the top of the rotating base, and the first rotating gear is meshed with the second rotating gear.

[0017] In some embodiments, a central through hole is provided at the rotating end of the top of the rotating base, and a silicone light-isolating pad is abutted against the top of the rotating base, and the outer diameter of the silicone light-isolating pad matches the outer diameter of the rotating end of the top of the rotating base.

[0018] In some embodiments, the sensing component comprises:

[0019] A photosensitive probe, the photosensitive probe passes through the test bench and extends into the central through hole, the photosensitive end of the photosensitive probe is arranged corresponding to the distance sensor, and the photosensitive probe is arranged vertically, and the side wall of the photosensitive probe is fixedly connected to the bottom of the test bench;

[0020] An optical fiber, one end of which is connected to the photosensitive probe, and the other end of which is connected to a spectrometer interface.

[0021] In some embodiments, a single chip microcomputer and a display screen are disposed on the control panel, and a status indicator light and a control button are also disposed on one side of the control panel.

[0022] In some embodiments, the distance sensor, the halogen lamp, the halogen lamp relay, the control panel, the servo, and the reducer are electrically connected.

[0023] On the other hand, in some embodiments, the present invention provides a method for detecting near-infrared spectrum and diameter of a candy apple by rotation, comprising the following steps:

[0024] S1. Place the candy apple on the rotating base, connect the spectrometer interface to the spectrometer and start spectrum detection, then place the silicone light-isolating pad between the candy apple and the rotating base, and the distance sensor will detect the diameter of the candy apple;

[0025] S2. Press the start detection button, and the single chip microcomputer controls the halogen lamp relay to connect the halogen lamp power supply so that the halogen lamp turns on;

[0026] S3. After the halogen lamp is turned on for 5 seconds, the single chip microcomputer controls the servo and the reducer to make the rotating base start to rotate. The rotating angle of the rotating base is: first 360 degrees clockwise, then 360 degrees counterclockwise;

[0027] S4. After the rotation is completed, wait for 3 seconds, turn off the halogen lamp, and end the spectrum detection.

[0028] The foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0029] Other features and aspects of the present disclosure will become more apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 An axonometric diagram of an experimental platform for rotating and detecting near-infrared spectra and diameters of candied apples provided in an embodiment of the present invention;

[0032] Figure 2 A front view of a test bench for rotating and detecting near-infrared spectra and diameters of candied apples provided in an embodiment of the present invention;

[0033] Figure 3 A partial enlarged view of a laboratory bench for rotating and detecting the near-infrared spectrum and diameter of a candied apple provided in an embodiment of the present invention.

[0034] Among them: 1. Frame; 2. Distance sensor; 3. Halogen lamp; 4. Test bench; 5. Halogen lamp relay; 6. Control panel; 7. U-shaped frame; 8. Connecting column; 9. Support column; 10. Servo; 11. First rotating gear; 12. Rotating base; 13. Second rotating gear; 14. Center through hole; 15. Silicone light-isolating cushion; 16. Photosensitive probe; 17. Optical fiber; 18. Spectrometer interface; 19. Display screen; 20. Status indicator light; 21. Control button; 22. Reducer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] As mentioned in the background technology, in the fields of industrial production and scientific research, accurate measurement of object size is crucial. Traditional size measurement methods, such as calipers and vernier calipers, are easy to operate, but have certain limitations in accuracy and efficiency, especially when rapid and non-destructive testing is required.

[0040] For the specific need of diameter measurement, traditional contact measurement methods may introduce additional errors and are not applicable to some soft or easily deformed materials. Therefore, it is particularly important to develop a non-contact diameter detection method based on near-infrared spectroscopy technology. This method can overcome the shortcomings of traditional measurement methods and achieve high-precision measurement of the diameters of various materials (including metals, plastics, rubber, etc.) and objects of different shapes.

[0041] In order to improve the above problems, the present application proposes a test bench and a detection method for rotating the near-infrared spectrum and diameter of a candy apple. The test bench can quickly complete the measurement of the diameter of the candy apple body and display the results on the screen in real time, which greatly shortens the measurement time and improves work efficiency. By continuously detecting the spectral data of the candy apple body for one week, the method is more comprehensive and accurate than the traditional single-posture detection method. It can effectively reduce the error caused by the uneven distribution of substances inside the candy apple body and provide more reliable measurement results. All components of the test bench are integrated and controlled by a single-chip microcomputer, making the control process simpler and more convenient. Users can easily complete the measurement task without complicated operating steps. The halogen lamp can be freely controlled as a light source. Turning off the halogen lamp when not in use can reduce the heat accumulation in the test bench, which saves energy and helps protect the environment. The use of a distance sensor for non-contact measurement avoids the additional errors and damage risks to the candy apple body that may be introduced by traditional contact measurement. It is particularly suitable for the measurement needs of soft or deformable materials and sensitive surfaces.

[0042] See also Figure 1-3 As shown, the first embodiment:

[0043] According to an embodiment of the present application, a test bench for rotating and detecting near-infrared spectrum and diameter of a candied apple includes:

[0044] A frame 1, a distance sensor 2 is arranged on the top wall of the frame 1, a mounting end of the distance sensor 2 is fixedly connected to the top wall of the frame 1, a detection end of the distance sensor 2 is arranged downward, and a halogen lamp 3 is arranged on the top of the frame 1;

[0045] A support assembly is arranged at the bottom of the frame 1. Two support assemblies are arranged symmetrically with the axis of the frame 1 as the axis. The tops of the two support assemblies are fixedly connected to the bottom of the test bench 4. The test bench 4 is provided with a halogen lamp relay 5 and a control panel 6;

[0046] A rotating assembly, the rotating assembly is arranged on a test bench 4;

[0047] The sensing component is arranged corresponding to the rotating component, and the sensing component is arranged at the bottom of the test bench 4.

[0048] In some specific embodiments, the frame 1 is a cubic frame structure, a U-shaped frame 7 is arranged inside the frame 1, the opening of the U-shaped frame 7 is arranged downward, the outer diameter of the U-shaped frame 7 matches the inner diameter of the frame 1, the outer wall of the U-shaped frame 7 is fixedly connected to the inner wall of the frame 1, the axis line of the frame 1 coincides with the axis line of the U-shaped frame 7, the distance sensor 2 is arranged on the inner wall of the U-shaped frame 7, the mounting end of the distance sensor 2 is fixedly connected to the inner wall of the U-shaped frame 7, two halogen lamps 3 are symmetrically arranged with the distance sensor 2 as the axis, and the mounting ends of the two halogen lamps 3 are fixedly connected to the inner wall of the U-shaped frame 7, and the light wavelength of the halogen lamp 3 is 260-850nm.

[0049] Specifically, the distance sensor 2 coincides with the axis of the U-shaped frame 7 , and the outer diameter of the U-shaped frame 7 matches the inner diameter of the frame 1 , which can be understood as the outer diameter of the U-shaped frame 7 is less than or equal to the inner diameter of the frame 1 .

[0050] In some specific embodiments, the support assembly includes:

[0051] A connecting column 8, which is disposed at the bottom of the frame 1 and is arranged horizontally, with both ends of the connecting column 8 being fixedly connected to the inner wall of the frame 1;

[0052] Support columns 9, two support columns 9 are symmetrically arranged with the axis of the connecting column 8 as the axis, and the bottoms of the two support columns 9 are fixedly connected to the top surface of the connecting column 8, the two support columns 9 are arranged perpendicular to the connecting column 8, and the tops of the two support columns 9 are fixedly connected to the bottom surface of the test bench 4.

[0053] In some specific embodiments, the test bench 4 is horizontally arranged, and the side walls of the test bench 4 are fixedly connected to the inner wall of the frame 1 and the inner wall of the U-shaped frame 7, the halogen lamp relay 5 and the control panel 6 are arranged on the top surface of the test bench 4, and the bottom mounting end of the halogen lamp relay 5 and the bottom mounting end of the control panel 6 are fixedly connected to the top surface of the test bench 4.

[0054] In some specific embodiments, the rotating assembly includes:

[0055] The steering gear 10 is arranged at the bottom of the test bench 4, the mounting end of the steering gear 10 is fixedly connected to the bottom of the test bench 4, the output shaft of the steering gear 10 is meshed with the rotating end of the reducer 22 through the test bench 4 and the top of the rotating end of the reducer 22 extends through the test bench 4 to the top of the test bench 4, and the top of the rotating end of the reducer 4 is fixedly connected with a first rotating gear 11, the first rotating gear 11 is arranged horizontally, and the mounting end of the reducer 22 is fixedly connected to the bottom of the test bench 4;

[0056] A rotating base 12 is arranged on one side of the first rotating gear 11. The bottom of the rotating base 12 is fixedly connected to the top of the test bench 4. A second rotating gear 13 is sleeved around the side wall of the top rotating end of the rotating base 12. The inner wall of the second rotating gear 13 is fixedly connected to the side wall of the top rotating end of the rotating base 12. The first rotating gear 11 is meshed with the second rotating gear 13.

[0057] Specifically, when the steering gear 10 rotates, the rotating end of the reducer 22 rotates along with the steering gear 10, thereby driving the first rotating gear 11 to rotate, and the first rotating gear 11 drives the second rotating gear 13 to rotate. Since the second rotating gear 13 is fixedly connected to the rotating base 12, the rotating base 12 rotates along with the second rotating gear 13. The reducer 22 can adjust the rotation speed of the first rotating gear 11.

[0058] In some specific embodiments, a central through hole 14 is provided at the top rotating end of the rotating base 12 , and a silicone light-isolating cushion 15 is abutted against the top of the rotating base 12 , and the outer diameter of the silicone light-isolating cushion 15 matches the outer diameter of the top rotating end of the rotating base 12 .

[0059] Specifically, the rotating base 12 coincides with the axis of the distance sensor 2 , the silicone light-isolating pad 15 is placed on the top of the rotating base 12 , and the bottom of the silicone light-isolating pad 15 is in contact with the top of the rotating base 12 , that is, the silicone light-isolating pad 15 can be detached from the rotating base 12 .

[0060] In some specific embodiments, the sensing component includes:

[0061] The photosensitive probe 16 extends from the test bench 4 to the central through hole 14. The photosensitive end of the photosensitive probe 16 is arranged corresponding to the distance sensor 2, and the photosensitive probe 16 is arranged vertically. The side wall of the photosensitive probe 16 is fixedly connected to the bottom of the test bench 4.

[0062] An optical fiber 17 , one end of which is connected to the photosensitive probe 16 , and the other end of which is connected to a spectrometer interface 18 .

[0063] Specifically, the photosensitive probe 16 coincides with the axis of the rotating base 12 , and the photosensitive probe 16 is used to detect the spectral data of the object to be measured placed on the rotating base 12 .

[0064] In some specific embodiments, a single chip microcomputer and a display screen 19 are disposed on the control panel 6 , and a status indicator light 20 and a control button 21 are also disposed on one side of the control panel 6 .

[0065] In some specific embodiments, the distance sensor 2 , the halogen lamp 3 , the halogen lamp relay 5 , the control panel 6 , the steering gear 10 , and the reducer 22 are electrically connected.

[0066] Specifically, the servo 10 and the rotating base 12 can provide a rotation angle of 360 degrees. The display screen 19 displays the status of the halogen lamp relay 5, the value of the distance sensor 2, the diameter of the candy apple, the angles of the servo 10 and the rotating base 12, and the overall status identification of the test bench. The two halogen lamps 3 are arranged corresponding to the rotating base 12, that is, the irradiation end of the halogen lamp 3 is arranged toward the center of the rotating base 12 to irradiate the object to be tested.

[0067] Second embodiment:

[0068] According to an embodiment of the present application, a method for detecting near-infrared spectrum and diameter of a candied apple by rotation detection includes the following steps:

[0069] S1, place the candy apple on the rotating base 12, connect the spectrometer interface 18 to the spectrometer and start the spectrum detection, then place the silicone light-isolating cushion 15 between the candy apple and the rotating base 12, and the distance sensor 2 will detect the diameter of the candy apple;

[0070] S2. Press the start detection button, the single chip microcomputer controls the halogen lamp relay 5 to connect the halogen lamp power supply so that the halogen lamp 3 turns on.

[0071] S3, after the halogen lamp 3 is turned on for 5 seconds, the single chip microcomputer controls the steering gear 10 and the reducer 22 to make the rotating base 12 start to rotate, and the rotating base 12 rotates 360 degrees clockwise first, and then 360 degrees counterclockwise;

[0072] S4. After the rotation is completed, wait for 3 seconds, turn off the halogen lamp 3, and end the spectrum detection.

[0073] Specifically, since the distance between the distance sensor 2 and the bottom rotating base 12 is constant, and when the candy apple is placed on the rotating base 12, the outer edge of the candy apple contacts the bottom of the rotating base 12. Therefore, the diameter of the object to be detected can be obtained by subtracting the distance from the distance sensor 2 to the object to be detected detected by the distance sensor 2 from the fixed distance between the distance sensor 2 and the bottom rotating base 12.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rotating test bench for detecting near infrared spectrum and diameter of candied apples, characterized in that: include: A frame, wherein a distance sensor is disposed on the top wall of the frame, a mounting end of the distance sensor is fixedly connected to the top wall of the frame, a detection end of the distance sensor is disposed downward, and a halogen lamp is disposed on the top of the frame; A support assembly, the support assembly is arranged at the bottom of the frame, two support assemblies are arranged symmetrically with the axis of the frame as the axis, the tops of the two support assemblies are fixedly connected to the bottom of the test bench, and a halogen lamp relay and a control panel are arranged on the test bench; A rotating assembly, wherein the rotating assembly is disposed on the test bench; The sensing component is arranged corresponding to the rotating component and is arranged at the bottom of the test bench.

2. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 1, characterized in that: The frame is a cubic frame structure, a U-shaped frame is arranged inside the frame, the U-shaped frame opening is arranged downward, the outer diameter of the U-shaped frame matches the inner diameter of the frame, the outer wall of the U-shaped frame is fixedly connected to the inner wall of the frame, the frame coincides with the axis line of the U-shaped frame, the distance sensor is arranged on the inner wall of the U-shaped frame, the mounting end of the distance sensor is fixedly connected to the inner wall of the U-shaped frame, two halogen lamps are symmetrically arranged with the distance sensor as the axis, and the two mounting ends of the halogen lamps are fixedly connected to the inner wall of the U-shaped frame, and the light wavelength of the halogen lamp is 260-850nm.

3. The experimental platform for rotating and detecting the near infrared spectrum and diameter of candied apples according to claim 2, characterized in that: The support assembly comprises: A connecting column, wherein the connecting column is arranged at the bottom of the frame and is arranged horizontally, and both ends of the connecting column are respectively fixedly connected to the inner wall of the frame; The supporting columns are two in a symmetrical manner with the axis of the connecting column as the axis, and the bottoms of the two supporting columns are fixedly connected to the top surfaces of the connecting columns. The two supporting columns are arranged perpendicular to the connecting columns, and the tops of the two supporting columns are fixedly connected to the bottom surface of the test bench.

4. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 3, characterized in that: The test bench is arranged horizontally, and the side walls of the test bench are fixedly connected to the inner wall of the frame and the inner wall of the U-shaped frame, the halogen lamp relay and the control panel are arranged on the top surface of the test bench, and the bottom mounting end of the halogen lamp relay and the bottom mounting end of the control panel are fixedly connected to the top surface of the test bench.

5. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 1, characterized in that: The rotating assembly comprises: A steering gear, wherein the steering gear is arranged at the bottom of the test bench, the mounting end of the steering gear is fixedly connected to the bottom of the test bench, the output shaft of the steering gear is meshedly connected to the rotating end of the reducer through gears, the top of the rotating end of the reducer passes through the test bench and extends to the top of the test bench, and the top of the rotating end of the reducer is fixedly connected with a first rotating gear, the first rotating gear is horizontally arranged, and the mounting end of the reducer is fixedly connected to the bottom of the test bench; A rotating base, wherein the rotating base is arranged on one side of the first rotating gear, the bottom of the rotating base is fixedly connected to the top of the test bench, a second rotating gear is sleeved around the side wall of the rotating end at the top of the rotating base, the inner wall of the second rotating gear is fixedly connected to the side wall of the rotating end at the top of the rotating base, and the first rotating gear is meshed with the second rotating gear.

6. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 5, characterized in that: A central through hole is provided at the rotating end of the top of the rotating base, and a silicone light-isolating cushion is abutted against the top of the rotating base, and the outer diameter of the silicone light-isolating cushion matches the outer diameter of the rotating end of the top of the rotating base.

7. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 6, characterized in that: The sensing component comprises: A photosensitive probe, the photosensitive probe passes through the test bench and extends into the central through hole, the photosensitive end of the photosensitive probe is arranged corresponding to the distance sensor, and the photosensitive probe is arranged vertically, and the side wall of the photosensitive probe is fixedly connected to the bottom of the test bench; An optical fiber, one end of which is connected to the photosensitive probe, and the other end of which is connected to a spectrometer interface.

8. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 5, characterized in that: The control panel is provided with a single chip microcomputer and a display screen, and one side of the control panel is also provided with a status indicator light and a control button.

9. The experimental platform for rotating and detecting near infrared spectrum and diameter of candied apples according to claim 5, characterized in that: The distance sensor, the halogen lamp, the halogen lamp relay, the control panel, the steering gear and the reducer are electrically connected.

10. A method for detecting the near infrared spectrum and diameter of a candied apple by rotation, characterized in that: The experimental platform for rotating and detecting the near infrared spectrum and diameter of a candied apple as claimed in any one of claims 1 to 9 comprises the following steps: S1. Place the candy apple on the rotating base, connect the spectrometer interface to the spectrometer and start spectrum detection, then place the silicone light-isolating pad between the candy apple and the rotating base, and the distance sensor will detect the diameter of the candy apple; S2. Press the start detection button, and the single chip microcomputer controls the halogen lamp relay to connect the halogen lamp power supply so that the halogen lamp turns on; S3. After the halogen lamp is turned on for 5 seconds, the single chip microcomputer controls the servo and the reducer to make the rotating base start to rotate. The rotating angle of the rotating base is: first 360 degrees clockwise, then 360 degrees counterclockwise; S4. After the rotation is completed, wait for 3 seconds, turn off the halogen lamp, and end the spectrum detection.

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