A spectrum acquisition instrument based on a protective box and a method for adaptively adjusting the field of view

Abstract

The present invention discloses a spectrum collector based on a protective box and a method for adaptively adjusting the field of view, which relate to the technical field of spectrometer auxiliary equipment. The protective box comprises a spectrum collector which is detachably connected inside the protective box. The spectrum collector can be moved along the optical path relative to the protective box to adaptively adjust the distance between the spectrum collector and the photographed target object according to the field of view. A foreign matter cleaning module is installed on the outside of the protective box, and an optical path on-off module and a control module are installed inside the protective box. The protective box is equipped with a temperature control module. In actual use, in order to ensure the quality of data collection, the protective box used by the present invention has waterproof, dustproof and corrosion-resistant functions. The spectrum collector can be moved and adjusted inside the box to achieve a maximum field of view angle. The lens is kept clean by the foreign matter cleaning module. The temperature control module is equipped to automatically adjust the camera temperature to prevent the performance of optical components from being degraded due to temperature changes, thereby ensuring that the collected spectral data is of high quality and high precision to meet the relevant requirements of industrial scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of spectrometer auxiliary equipment, and in particular to a spectrum collector based on a protective box and a field of view adaptive adjustment method. Background Art

[0002] Hyperspectral cameras are advanced optical devices that can capture spectral information about an object across multiple narrow wavelengths. By decomposing incident light into a spectrum of distinct wavelengths and measuring the intensity of each wavelength, they provide richer image information than traditional cameras. These devices have broad industrial applications, such as quality inspection, materials analysis, and environmental monitoring. Because hyperspectral cameras contain sophisticated optical systems, they are sensitive to environmental conditions. Rainy or foggy conditions can cause moisture to enter the camera, blurring or damaging the optical path, impacting image quality and measurement accuracy. Prolonged exposure to humid environments, such as at sea, can corrode camera components, reducing performance and reliability. Temperature also significantly impacts the operation of hyperspectral cameras. Excessively high or low temperatures can degrade the performance of the camera's optical components and electronics, even leading to malfunction. High temperatures can cause the camera to overheat, impacting image stability and accuracy. Low temperatures can degrade battery performance and increase the camera's startup time.

[0003] However, in the existing technology, hyperspectral cameras are interfered with by environmental factors during use, resulting in their own performance degradation or the inability to adjust the field of view distance from the shooting target in the application scenario, reducing the use effect and accuracy of the equipment, and failing to accurately obtain spectral information, thereby affecting its application effect in related fields. Therefore, ensuring the stability and reliability of hyperspectral cameras in complex environments is an urgent problem that needs to be solved. Summary of the Invention

[0004] In response to the problems in the related art, the present invention proposes a spectrum acquisition instrument based on a protective box and a field of view adaptive adjustment method to overcome the technical problem in the existing related art that the hyperspectral camera in the protective box cannot adjust the field of view distance from the shooting target object.

[0005] To this end, the specific technical solutions adopted in the present invention are as follows:

[0006] A spectrum acquisition instrument based on a protective box includes a protective box, a spectrum acquisition instrument detachably connected to the protective box, the spectrum acquisition instrument being movable relative to the protective box along an optical path to adaptively adjust the distance between the spectrum acquisition instrument and a target object being photographed according to the field of view, a foreign matter cleaning module mounted on the outside of the protective box for cleaning foreign matter on the optical path of the protective box, an optical path on-off module mounted on the inside of the protective box for turning the optical path of the spectrum acquisition instrument on and off, a temperature control module mounted on the protective box for detecting the temperature inside and outside the protective box and regulating the temperature inside the protective box by temperature conduction through the metal shell of the protective box, and a control module mounted within the protective box for controlling the operation of the spectrum acquisition instrument, the foreign matter cleaning module, the optical path on-off module, and the temperature control module. Placing the spectrum acquisition instrument within the protective box effectively isolates it from moisture, and the foreign matter cleaning module and the temperature control module are used to maintain a clean optical path and a temperature suitable for the operation of a hyperspectral camera. Since the spectrum acquisition instrument can be movable relative to the protective box along the optical path, it can adaptively adjust the field of view distance from the target object being photographed.

[0007] Furthermore, the temperature control module conducts temperature to the metal shell of the protective box through the temperature control surface. The temperature control module is located on the outside of the protective box, and the temperature control surface is connected to the protective box body through screws. The connection is sealed with an O-ring. When working, the temperature is conducted to the metal shell of the protective box through the temperature control surface, thereby adjusting the temperature inside the protective box to a temperature suitable for the operation of the hyperspectral camera.

[0008] Furthermore, the spectrum collector moves along the optical path based on the instructions of the control module and through the moving component to adjust the distance between the spectrum collector and the target object. The initial position of the spectrum collector is the position closest to the target object. The moving component includes a displacement plate and a slide rail. The slide rail is fixedly connected in the protective box, and the displacement plate is slidably connected to the slide rail. The motor drives the displacement plate to drive the spectrum collector to move, thereby adjusting the distance between the spectrum collector and the object. The spectrum collector is connected to a replacement plate that can be quickly disassembled. One side plate of the replacement plate is connected to the spectrum collector, and the other side plate is connected to the displacement plate. The spectrum collector and the replacement plate are connected in a simple and firm screw-fixed manner. The screw-fixed connection method is convenient for maintenance and inspection, which helps to extend the service life of the equipment and reduce maintenance costs. The spectrum collector and the quick-release component not only achieve high flexibility and dynamic adaptability, but also ensure its stability and reliability in complex and changing application scenarios.

[0009] Furthermore, in order to achieve the purpose of cleaning foreign objects, an optical path is opened on the protective box, and a light-transmitting component is detachably sealed in the optical path. The light-transmitting component is connected to the optical path of the spectrum collector lens, and the light-transmitting component is connected to the protective box body through an O-ring, and then the O-ring is squeezed and deformed by a pressing piece to ensure sealing. The foreign object cleaning module includes a cleaning component connected to the protective box and a first power source. The cleaning component includes a first transmission rod, a scraper arm and a wiper. The first transmission rod connects the scraper arm and the first power source, and the wiper is connected to the scraper arm. The first transmission rod drives the scraper arm to move back and forth in a fan shape based on the instruction of the control module, driving the wiper to clean the light-transmitting component. When working, it can scrape off water mist and dust within the field of view of the spectrum collector, and will not interfere with the data collection of the spectrum collector when not working.

[0010] Furthermore, the optical path on-off module includes a light-blocking plate, a second transmission rod, a second power source and a limiting component. The limiting component includes a first vertical rod, a second vertical rod and a cross rod. The first vertical rod and the second vertical rod are fixedly connected to both ends of the cross rod by screws. The bottom ends of the first vertical rod and the second vertical rod are fixed and vertically connected to the protective box body by screws. The second transmission rod connects the second power source and the light-blocking plate. The second transmission rod drives the light-blocking plate to perform linear movement between the cross rod and the protective box based on the instructions of the control module, thereby switching the optical path of the spectrometer on and off.

[0011] Furthermore, the light blocking piece is L-shaped and is located on the inner side of the protective box. One side of the light blocking piece is a light bar surface and the other side is a groove surface. The groove surface is perpendicular to the light bar surface. A connecting groove is provided on the groove surface. One end of the second transmission rod is connected to the groove surface through the connecting groove. When moving, the light bar surface makes a linear motion parallel to the light-transmitting component. When the light blocking piece is working, it can completely block the light brought by the light-transmitting component of the light entrance. When not working, the second power source locks the light blocking piece and fixes it to the left side of the light-transmitting component of the light entrance, so as not to interfere with the data collection of the spectrometer.

[0012] Furthermore, the body of the protective box is made of metal corrosion-resistant material, and the protective box is connected to a protective box cover. The protective box cover and the box body are connected by a special-shaped sealing ring. There are grooves of the same shape on the box body, and ribs of corresponding shapes on the cover. Each part is connected and tightened by screws. All slotted connectors on the box body are sealed with O-rings and pressing sheets. The internal and external power cords use aviation interfaces to ensure sealing, and have waterproof and dustproof functions.

[0013] A method for adaptively adjusting the field of view of a spectrum collector based on a protective box, for adaptively adjusting the field of view of the spectrum collector based on the protective box, comprising the following steps:

[0014] S1. Before collecting data, make sure the protective box is in a suitable working condition and replace the corresponding model of spectrum collector according to the usage scenario;

[0015] S2. Control the spectrum acquisition instrument to collect dark background signals. Dark background correction ensures the accuracy of measurement results, improves image quality, and makes image-based data analysis more reliable.

[0016] S3. Place several markers of known spectrum according to the position of the captured target, and calibrate the spectrum collector based on the marker to obtain the maximum field of view;

[0017] S4. Spectrum acquisition is performed after adjusting the distance between the spectrum acquisition instrument and the photographed target object based on the maximum field of view angle.

[0018] Furthermore, S3 includes the following steps:

[0019] S3.1. Adjust the distance between the spectrum collector and the marker several times to obtain the signal of the first pixel and the signal of the last pixel of the spectrum collector at each position. After deducting the dark background signal, calculate the spectral angle of each pixel to obtain the spectral angle results of the first pixel and the spectral angle results of the last pixel at each position.

[0020] S3.2. Compare the spectral angle results of the first pixel and the spectral angle results of the last pixel at several positions with the set threshold, filter out positions where the spectral angle results of the first pixel and the spectral angle results of the last pixel are both smaller than the set threshold, calculate the spectral angles corresponding to the filtered positions, and the spectral angle of any position is the average of the spectral angle results of the first pixel and the spectral angle results of the last pixel. Obtain the maximum field of view angle based on the minimum spectral angle, and record the current position.

[0021] Furthermore, after deducting the dark background, the signal is spectrally calculated based on the built-in model signal to obtain the spectral angle results of the first pixel and the last pixel at several positions. The built-in model signal is obtained by collecting signals from the marker during laboratory debugging. The maximum field of view angle is obtained based on the minimum spectral angle result. The placed marker is removed, and a whiteboard is placed at the position of the shooting target to collect whiteboard signals. After collecting the whiteboard signal, normal data of the shooting target is collected in real time and the real-time results are displayed on the software end.

[0022] The beneficial effects of the present invention are:

[0023] 1. In actual use of the present invention, the spectrum collector can be detachably connected to the protective box. The spectrum collector can be moved along the optical path relative to the protective box, and the field of view distance between the spectrum collector and the photographed target object can be adaptively adjusted to ensure the high quality and high precision of the collected spectral data. The protective box has waterproof, dustproof and corrosion-resistant functions, which can effectively resist the influence of harsh environment on the spectrum collector and ensure the stable operation of the spectrum collector. The outside of the protective box is equipped with a temperature control module, which can automatically adjust the temperature inside and outside the protective box, so that the spectrum collector maintains a stable working state under extremely high or low temperature conditions, prevents the performance of optical components from degrading due to temperature changes, and ensures the accuracy and stability of spectral data.

[0024] 2. The protective box of this spectrum collector is equipped with a foreign matter cleaning module, which can effectively remove fog, water droplets and dust on the surface of the light-transmitting components, ensure the cleanliness of the optical path, thereby ensuring the accurate collection of spectral data and enhancing the adaptability and reliability of the instrument in harsh environments such as humidity and dust.

[0025] 3. The protective box of this spectrum collector is equipped with an optical path on-off module, which can automatically collect the dark background data of the spectrum collector. After dark background correction, the measurement results are accurate, the image quality is significantly improved, and the image-based data analysis is more reliable.

[0026] 4. This spectrum collector can be quickly disassembled through quick-release components, which makes it convenient for users to replace different models of spectrum collectors according to their needs, improve the versatility and flexibility of the instrument, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a three-dimensional diagram of a protection box of a spectrum acquisition instrument based on a protection box according to an embodiment of the present invention;

[0029] Figure 2 3. This is a top view of an open cover of a protective box of a spectrum collector based on a protective box according to an embodiment of the present invention;

[0030] Figure 3 This is a structural schematic diagram of an optical path on-off module in a spectrum acquisition instrument based on a protective box according to an embodiment of the present invention;

[0031] Figure 4 1 is a schematic structural diagram of a foreign matter cleaning module in a spectrum collector based on a protective box according to an embodiment of the present invention;

[0032] Figure 5 This is one of the structural schematic diagrams of a spectrum collector and a replacement board thereof according to an embodiment of the present invention;

[0033] Figure 6 This is a second structural schematic diagram of a spectrum collector and its replacement board according to an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Protective box; 101. Protective box cover; 102. Transparent sheet; 2. Spectrum collector; 201. Displacement plate; 202. Slide rail; 203. Replacement plate; 3. Foreign matter cleaning module; 301. First transmission rod; 302. Wiper arm; 303. Wiper; 304. First power source; 4. Optical path on-off module; 401. Light blocking sheet; 4011. Light barrier surface; 4012. Groove surface; 4013. Connecting groove; 402. Second transmission rod; 4031. First vertical rod; 4032. Second vertical rod; 4033. Cross bar; 404. Second power source; 5. Temperature control module. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In this example, the spectrum collector 2 is a hyperspectral camera, and the first power source 304 and the second power source 404 are both steering gears. Example 1

[0038] like Figure 1-Figure 5 As shown, according to an embodiment of the present invention, a spectrum acquisition instrument based on a protective box is provided, including a protective box 1, a hyperspectral camera connected to the protective box 1 and can be quickly disassembled, the hyperspectral camera can move along the optical path relative to the protective box 1 to adaptively adjust the distance between the hyperspectral camera and the target object being photographed according to the field of view, a foreign matter cleaning module 3 is installed on the outside of the protective box 1, the foreign matter cleaning module 3 is used to clean foreign matters on the optical path of the protective box 1, an optical path on-off module 4 is installed on the inside of the protective box 1, the optical path on-off module 4 is used to turn on and off the optical path of the hyperspectral camera, a temperature control module 5 is installed on the protective box 1, the temperature control module 5 is used to detect the temperature inside and outside the protective box 1, and adjust the temperature inside the protective box 1 by temperature conduction through the metal shell of the protective box 1, and a control module is installed in the protective box 1, the control module is used to control the operation of the spectrum acquisition instrument 2, the foreign matter cleaning module 3, the optical path on-off module 4 and the temperature control module 5.

[0039] The moving assembly includes a displacement plate 201 and a slide rail 202. The slide rail 202 is fixedly connected to the protective box 1 by screws. The displacement plate 201 is slidably connected to the slide rail 202. The hyperspectral camera is connected to the replacement plate 203 by screws. The replacement plate 203 is connected to the displacement plate 201 in the moving assembly by screws through a standardized interface. The displacement plate 201 moves along the optical path to adjust the distance between the hyperspectral camera and the target object. The initial position of the hyperspectral camera is the position closest to the target object.

[0040] Through the above technical solution, the hyperspectral camera and the replacement plate 203 are connected by a simple screw fixing method. The screw fixing method is also convenient for maintenance and repair, which helps to extend the service life of the equipment and reduce maintenance costs. It not only achieves high flexibility and dynamic adaptability, but also ensures its stability and reliability in complex and changing application scenarios.

[0041] In order to achieve the effect of cleaning foreign matter, a foreign matter cleaning module 3 is installed on the outside of the protective box 1. An optical path is opened on the protective box 1. A light-transmitting component is detachably sealed and connected in the optical path. The light-transmitting component is a light-transmitting sheet 102. The light-transmitting sheet 102 is connected to the optical path of the hyperspectral camera. The light-transmitting sheet 102 is connected to the protective box 1 through an O-ring, and then the O-ring is deformed by pressing the sheet to ensure the sealing of the box. The foreign matter cleaning module 3 includes a cleaning component and a steering gear connected to the protective box 1. The cleaning component includes a first transmission rod 301, a scraping arm 302 and a wiper 303. The first transmission rod 301 connects the scraping arm 302 and the steering gear, and the first transmission rod 30 1 is fixed to the servo by screws. The servo provides power to drive the first transmission rod 301 to rotate. The wiper 303 is fixedly connected to the scraper arm 302 by screws. The first transmission rod 301 drives the scraper arm 302 to move back and forth in a fan shape based on the instructions of the control module, driving the wiper 303 to clean the light-transmitting sheet 102. During movement, the wiper 303 is tangent to the light-transmitting sheet 102 and can just remove foreign matter on the light-transmitting sheet 102 without causing damage to the light-transmitting sheet 102. When the foreign matter cleaning module 3 is not working, it will not interfere with the data acquisition of the hyperspectral camera. The control module controls the wiper 303 to work at a scheduled time or manually operate it through computer software connected to the control module.

[0042] The optical path on-off module 4 can on-off the optical path of the protective box 1. After blocking the optical path, the hyperspectral camera collects dark background signals. The optical path on-off module 4 includes a light blocking plate 401, a second transmission rod 402, a servo and a limiting component. The limiting component includes a first vertical rod 4031, a second vertical rod 4032 and a cross bar 4033. The first vertical rod 4031 and the second vertical rod 4032 are fixedly connected to the two ends of the cross bar 4033 by screws. The bottom ends of the first vertical rod 4031 and the second vertical rod 4032 are fixed to the protective box 1 body by screws and are vertically connected to the protective box 1 body. The second transmission rod 402 connects the servo and the light blocking plate 401. The second transmission rod 402 drives the light blocking plate 401 to perform linear movement between the cross bar 4033 and the protective box 1 based on the instructions of the control module, thereby on-off the optical path of the hyperspectral camera.

[0043] The light blocking piece 401 is L-shaped and is located on the inner side of the protective box 1. One side of the light blocking piece 401 is a light bar surface 4011, and the other side is a groove surface 4012. The groove surface 4012 is perpendicular to the light bar surface 4011. A connecting groove 4013 is provided on the groove surface 4012. One end of the second transmission rod 402 is connected to the light blocking piece 401 through the connecting groove 4013. When the light blocking piece 401 is working, it can completely block the light brought by the light-transmitting piece 102 at the light entrance. When not working, the servo locks the light blocking piece 401 and fixes it to the left side of the light-transmitting piece 102 at the light entrance so as not to interfere with the data acquisition of the hyperspectral camera.

[0044] The body of the protective box 1 is made of metal corrosion-resistant material. The protective box 1 is connected to a protective box cover 101. The protective box cover 101 is connected to the box body through a special-shaped sealing ring. There are grooves of the same shape on the box body, and ribs of corresponding shapes on the cover, which are tightened by screws. All slotted connectors on the box body are sealed with O-rings and pressing sheets. The internal and external power cords use aviation interfaces to ensure sealing, so that the protective box 1 has waterproof and dustproof functions.

[0045] The temperature control module 5 is a TEC temperature control module. The TEC temperature control module is located outside the protective box 1. The temperature control surface is connected to the protective box 1 body by screws, and the connection is sealed with an O-ring. When working, the temperature control surface conducts temperature to the metal shell of the protective box 1 to adjust the temperature inside and outside the protective box 1, so that the temperature reaches a temperature suitable for the operation of the hyperspectral camera. Example 2

[0046] like Figure 6 As shown, according to a spectrum collector based on a protective box according to an embodiment of the present invention, the replacement plate 203 has different shapes such as L-shape and U-shape to adapt to different models of hyperspectral cameras.

[0047] Through the above technical solution, the stability of the connection between different models of hyperspectral cameras and the replacement board 203 is ensured, and problems such as equipment damage or data loss caused by unstable connection are reduced. The hyperspectral camera and the replacement board 203 are connected by a simple screw fixing method, which quickly connects the hyperspectral camera and the replacement board 203, improves work efficiency, helps to extend the service life of the equipment and reduce maintenance costs, and achieves high flexibility and dynamic adaptability. Example 3

[0048] A method for adaptively adjusting the field of view of a spectrum collector based on a protective box is provided, for adaptively adjusting the field of view of the spectrum collector based on the protective box of the first embodiment, with collecting targets on a conveyor belt as an application scenario, comprising the following steps:

[0049] S1. Before collecting, confirm that the protective box 1 is in a suitable working state, hang the protective box 1, install a hyperspectral camera of the corresponding model in the protective box 1, and place markers with known spectra on both sides of the conveyor belt;

[0050] S2. Dark background signal acquisition: The control module controls the servo of the optical path on-off module 4 to rotate clockwise, driving the second transmission rod 402 to perform a fan-shaped movement. One end of the second transmission rod 402 is connected to the connecting groove 4013, driving the light barrier surface 4011 fixed between the box and the crossbar 4033 to perform linear movement. The light barrier surface 4011 blocks the light inlet, and the hyperspectral camera performs dark background signal acquisition. K , dark background signal D K After the acquisition is completed, the control module controls the servo of the optical path on-off module 4 to rotate counterclockwise, driving the second transmission rod 402 to do a fan-shaped movement, and the light barrier surface 4011 returns to the initial position without blocking the optical signal of the light inlet of the protective box 1.

[0051] S3. Place two markers with known spectra on both sides of the conveyor belt and move them an average of X mm. The hyperspectral camera collects signals once and records the signal DN1 of the first pixel and the signal DN2 of the last pixel captured by the hyperspectral camera at each position y. Subtract the dark background signal D K Finally, the first-order derivative of the signal is obtained and normalized, and the spectral angle R of the signal is calculated based on the built-in model signal to obtain the spectral angle result R1 of the first pixel and the spectral angle result R2 of the last pixel at each position y. The built-in model signal is obtained by collecting the signal of the marker in the laboratory. The spectral angle result R1 of the first pixel and the spectral angle result R2 of the last pixel at each position y are compared with the set threshold, and the positions where R1 and R2 are both less than the set threshold are screened out, and R=(R1+R2) / 2 of each position is obtained. The corresponding position y and the spectral angle value (y, R) are recorded as a set of data. After moving all positions, the position y with the minimum R value is obtained, which is considered to be the most suitable distance for the maximum field of view of the current hyperspectral camera.

[0052] S4. Spectral acquisition is performed after adjusting the distance between the hyperspectral camera and the target object based on the maximum field of view. The markers placed at both ends of the conveyor belt are removed, and a whiteboard is placed on the conveyor belt to collect whiteboard signals. After the whiteboard signal collection is completed, the conveyor belt is started to move the target object for normal real-time data collection, and the real-time results are displayed on the software end.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for adaptively adjusting the field of view of a spectrum collector based on a protective box, characterized in that: The following steps are involved: S1. Before collecting, confirm that the protective box (1) is in a suitable working state and replace the corresponding model of the spectrum collector (2) according to the usage scenario; S2. Control the spectrum collector (2) to collect dark background signals; S3. Place several markers of known spectrum according to the position of the photographed target object, calibrate the spectrum collector (2) based on the markers to obtain the maximum field angle: adjust the distance between the spectrum collector (2) and the markers several times, obtain the signal of the first pixel and the signal of the last pixel of the data photographed by the spectrum collector (2) at each position, calculate the spectral angles respectively after deducting the dark background signal, obtain the spectral angle results of the first pixel and the spectral angle results of the last pixel at several positions respectively, compare the spectral angle results of the first pixel and the spectral angle results of the last pixel at several positions with a set threshold, screen out positions where the spectral angle results of the first pixel and the spectral angle results of the last pixel are both smaller than the set threshold, calculate the spectral angles corresponding to the screened positions, the spectral angle of any position is the average of the spectral angle results of the first pixel and the spectral angle results of the last pixel, and obtain the maximum field angle based on the minimum spectral angle; S4. Adjusting the field of view distance between the spectrum collector (2) and the photographed target object based on the maximum field of view angle.

2. The method for adaptively adjusting the field of view of a spectrum collector based on a protective box according to claim 1, characterized in that: After deducting the dark background, the signal is spectrally calculated based on the built-in model signal to obtain the spectral angle results of the first pixel and the last pixel at several positions. The built-in model signal is obtained by collecting the signal of the marker during laboratory debugging.

3. A spectrum acquisition instrument based on a protective box, used to implement the field of view adaptive adjustment method based on a protective box according to any one of claims 1-2, characterized in that: The invention comprises a protective box (1) and a spectrum collector (2), wherein the spectrum collector (2) is detachably connected to the protective box (1), and the spectrum collector (2) can move along the optical path relative to the protective box (1) to adaptively adjust the distance between the spectrum collector (2) and the photographed target object according to the field of view; a foreign matter cleaning module (3) is installed on the outside of the protective box (1), and the foreign matter cleaning module (3) is used to clean foreign matter on the optical path of the protective box (1); an optical path on-off module (4) is installed on the inside of the protective box (1), and the optical path on-off module (4) is used to turn on and off the optical path of the spectrum collector (2); a temperature control module (5) is installed on the protective box (1), and the temperature control module (5) is used to detect the temperature inside and outside the protective box (1), and adjust the temperature inside the protective box (1) by temperature conduction through the metal shell of the protective box (1); a control module is installed in the protective box (1), and the control module is used to control the operation of the spectrum collector (2), the foreign matter cleaning module (3), the optical path on-off module (4) and the temperature control module (5).

4. The spectrum acquisition instrument based on the protective box according to claim 3, characterized in that: The spectrum collector (2) moves along the optical path through a moving assembly based on instructions from a control module to adjust the distance between the spectrum collector (2) and a photographed object. The initial position of the spectrum collector (2) is the position closest to the photographed object. The moving assembly includes a displacement plate (201) and a slide rail (202). The slide rail (202) is fixedly connected to the protective box (1). The displacement plate (201) is slidably connected to the slide rail (202). The spectrum collector (2) is connected to the displacement plate (201).

5. The spectrum acquisition instrument based on the protective box according to claim 4, characterized in that: The spectrum collector (2) is connected to a replacement plate (203) capable of quick disassembly, one side plate of the replacement plate (203) is connected to the spectrum collector (2), and the other side plate is connected to the displacement plate (201).

6. The spectrum acquisition instrument based on the protective box according to claim 3, characterized in that: The protection box (1) is provided with an optical path, and a light-transmitting component is detachably sealed and connected in the optical path. The foreign matter cleaning module (3) comprises a cleaning component connected to the protection box (1) and a first power source (304). The cleaning component comprises a first transmission rod (301), a scraping arm (302) and a wiper (303). The first transmission rod (301) is connected to the scraping arm (302) and the first power source (304). The wiper (303) is connected to the scraping arm (302). The first transmission rod (301) drives the scraping arm (302) to perform a fan-shaped reciprocating motion based on the instruction of the control module, thereby driving the wiper (303) to clean the light-transmitting component.

7. The spectrum acquisition instrument based on a protective box according to claim 3, characterized in that: The optical path on-off module (4) comprises a light shielding plate (401), a second transmission rod (402), a second power source (404) and a limiting component, wherein the limiting component comprises a first vertical rod (4031), a second vertical rod (4032) and a cross rod (4033), wherein the first vertical rod (4031) and the second vertical rod (4032) are vertically connected to the inner side of the protective box (1), one end of the cross rod (4033) is connected to the first vertical rod (4031), and the other end is connected to the second vertical rod (4032), the second transmission rod (402) is connected to the second power source (404) and the light shielding plate (401), and the second transmission rod (402) drives the light shielding plate (401) to move linearly between the cross rod (4033) and the protective box (1) based on the instruction of the control module, thereby switching the optical path of the spectrum collector (2).

8. The spectrum acquisition instrument based on the protective box according to claim 7, characterized in that: The light shielding plate (401) is L-shaped, with one side of the light shielding plate (401) being a light barrier surface (4011) and the other side being a groove surface (4012). A connecting groove (4013) is provided on the groove surface (4012), and one end of the second transmission rod (402) is connected to the light shielding plate (401) through the connecting groove (4013).

9. The spectrum acquisition instrument based on a protective box according to claim 3, characterized in that: The box body of the protection box (1) is made of metal corrosion-resistant material. The protection box (1) is connected to a protection box cover (101), and the protection box cover (101) and the box body are connected via a special-shaped sealing ring.

Images