A hyperspectral imaging system

Abstract

The utility model discloses a kind of hyperspectral imaging systems, it is related to hyperspectral imaging technical field.Hyperspectral imaging system, upper box has light-shielding effect, upper box is the structure of single-side opening and opening is located at bottom, the bottom opening of upper box is buckled above the lower box top plate of lower box, upper chamber is formed between upper box and lower box top plate, openable and closable box door is equipped on upper box, object table, hyperspectral camera and light source component are set in upper chamber;Object table is slidably connected above lower box top plate, drive assembly, control assembly are set in lower chamber in lower box, drive assembly is connected to object table through sliding hole on lower box top plate, hyperspectral camera, light source component, drive assembly are electrically connected control assembly.Hyperspectral scanning operation, the upper chamber where sample is located is shielded by upper box, closed scanning is realized, can reduce or avoid the influence of external stray light, improve sampling accuracy;Lower box contains drive assembly and control assembly, with protective effect.

Description

Technical Field

[0001] This utility model relates to the field of hyperspectral imaging technology, and in particular to a hyperspectral imaging system. Background Technology

[0002] Hyperspectral imaging technology combines the advantages of traditional imaging and spectral techniques, simultaneously acquiring both spatial and spectral information of the object being detected. These two functions enable hyperspectral imaging to simultaneously provide image texture and spectral features of the object, while also offering excellent spatial resolution. Hyperspectral scanning imaging technology is widely used in research fields such as agriculture, forestry, geology, biology, medicine, food quality assessment, and environmental monitoring.

[0003] Some existing hyperspectral imagers have an open structure, which makes them susceptible to the influence of external ambient light during the sampling and analysis process, affecting the accuracy of the sampling.

[0004] Therefore, how to improve the accuracy of sampling is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a hyperspectral imaging system that can improve the accuracy of sampling.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hyperspectral imaging system includes a chassis, a stage, a drive assembly, a hyperspectral camera, a light source assembly, and a control assembly. The chassis includes a lower housing and an upper housing. The upper housing has a light-shielding effect and is a single-sided opening located at the bottom. The bottom opening of the upper housing is fastened to the top plate of the lower housing, forming an upper chamber between the upper housing and the top plate of the lower housing. The upper housing has an openable door. The stage, the hyperspectral camera, and the light source assembly are located in the upper chamber. The stage is slidably connected to the top plate of the lower housing. The drive assembly and the control assembly are located in the lower chamber of the lower housing. The drive assembly is connected to the stage via a sliding hole on the top plate of the lower housing. The hyperspectral camera, the light source assembly, and the drive assembly are electrically connected to the control assembly.

[0008] Preferably, the upper housing is further provided with an air inlet and an air outlet, the air outlet being higher than the air inlet; the upper chamber is also provided with a cooling fan, the air outlet side of the cooling fan facing the air outlet.

[0009] Preferably, the inner surface of the upper housing is also provided with sound-absorbing cotton.

[0010] Preferably, the upper housing is detachably fixed to the lower housing.

[0011] Preferably, the upper chamber is further provided with a support assembly, which includes a column, a slide, a light source support, and a camera support; the bottom of the column is fixed to the lower housing, the slide is fixed to the column, and a first slider and a second slider are arranged sequentially from bottom to top on the slide, the first slider and the second slider can be adjusted in height by sliding on the slide; the camera support is fixed to the second slider, and the hyperspectral camera is fixed to the camera support; the light source support is fixed to the first slider, and both light source assemblies are fixed to the light source support and are respectively located on both sides of the hyperspectral camera in the horizontal direction.

[0012] Preferably, the light source assembly has a connecting rod, and the light source bracket has a light source mounting hole with a notch. The connecting rod extends into the light source mounting hole, and is connected to the notch by a locking handle, which causes the light source mounting hole to deform, so as to compress and detachably fix the connecting rod.

[0013] Preferably, the light source assembly includes a lamp barrel, a lamp panel assembly, a heat-dissipating plate, and a light source fan; the lamp panel assembly is disposed inside the lamp barrel, and the lamp panel assembly includes multiple LED lamp panels, each LED lamp panel being a broadband continuous light source, with the light-emitting surfaces of the LED lamp panels facing the same side; the heat-dissipating plate is built into the lamp barrel and disposed on the lamp panel assembly on the side opposite to the light-emitting surfaces of the LED lamp panels; the lamp barrel is provided with a light source air duct, the lamp panel assembly and the light source air duct are located on both sides of the heat-dissipating plate, and a light source fan is disposed in the light source air duct.

[0014] Preferably, the drive assembly includes a closed-loop stepper motor connected to the stage.

[0015] Preferably, it also includes a maintenance box, with a maintenance port extending through the side plate of the lower housing, and the maintenance box is retractably connected to the lower chamber via the maintenance port; the control component includes a hub device and a motor driver disposed on the maintenance box, the light source component, the hyperspectral camera, and the motor driver are electrically connected to the hub device, and the drive component includes a drive motor connected to the stage, and the drive motor is electrically connected to the motor driver.

[0016] Preferably, the top plate of the lower housing is provided with a first interface, a second interface, a third interface, and a fourth interface. The control component includes a hub and a light source driver. The first interface, the second interface, and the third interface are all electrically connected to the hub. The first interface is electrically connected to the hyperspectral camera, the second interface is electrically connected to the camera in the upper chamber, and the third interface is electrically connected to the cooling fan in the upper chamber. The light source component is electrically connected to the hub in sequence through the fourth interface and the light source driver. The light source driver has a charging port for an external power supply. The lower housing is also provided with an exposed control port, which is electrically connected to the hub.

[0017] The hyperspectral imaging system provided by this utility model includes a chassis, a stage, a drive assembly, a hyperspectral camera, a light source assembly, and a control assembly. The chassis includes a lower housing and an upper housing. The upper housing has a light-shielding effect and is a single-sided opening structure with the opening located at the bottom. The bottom opening of the upper housing is fastened to the top plate of the lower housing, forming an upper chamber between the upper housing and the top plate of the lower housing. The upper housing is provided with an openable and closable door. The stage, the hyperspectral camera, and the light source assembly are located in the upper chamber. The stage is slidably connected to the top plate of the lower housing. The drive assembly and the control assembly are located in the lower chamber of the lower housing. The drive assembly is connected to the stage through a sliding hole on the top plate of the lower housing. The hyperspectral camera, the light source assembly, and the drive assembly are electrically connected to the control assembly.

[0018] In the aforementioned hyperspectral imaging system, the stage, hyperspectral camera, and light source assembly are located in the upper chamber. During hyperspectral scanning, the upper chamber containing the sample is shielded by the upper housing, achieving closed scanning. This reduces or avoids the influence of external stray light and provides greater adaptability to the external environment, improving the accuracy of sampling and information acquisition. In addition, the lower housing houses the drive and control components, which are separated from the sample and the hyperspectral camera and light source assembly used for sampling, providing protection for the drive and control components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 The front view of the chassis provided in the specific embodiment of this utility model;

[0021] Figure 2 The isometric view of the chassis provided for a specific embodiment of this utility model;

[0022] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0023] Figure 4 This is a schematic diagram of the interior of the upper housing in a specific embodiment provided by this utility model;

[0024] Figure 5 Assembly diagram of the support components and upper structure provided in the specific embodiments of this utility model;

[0025] Figure 6 This is a top view of the interior of the lower housing in a specific embodiment of the present invention;

[0026] Figure 7 A structural diagram of the maintenance box provided in a specific embodiment of this utility model;

[0027] Figure 8 This is a structural diagram of the light source assembly provided in a specific embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the electrical connections for a specific embodiment of the present invention;

[0029] Figure 10 A simplified diagram of the control principle of a specific embodiment provided by this utility model.

[0030] Figure label:

[0031] Upper housing 1, debugging door 101, cabinet door 102, cabinet door 1021, handle 1022, first side panel 103, second side panel 104, third side panel 105, fourth side panel 106, indicator light 107, air inlet 108, air outlet 109, locking ring 1010, pin 1011, sound-absorbing cotton 1012, positioning post 1013, photoelectric switch 1014;

[0032] Lower housing 2, main housing 201, chassis 202, foot pads 203, power switch 204, control port 205, power socket 206, inspection port 207, lower locking ring 208, lower housing top plate 209, first interface 2091, second interface 2092, third interface 2093, fourth interface 2094, positioning hole 2095, long strip slide 2096;

[0033] Inspection box 3, cable management device 301, motor driver 302, upper eaves 303, limiting edge 304, screw 305;

[0034] Cooling fan 4;

[0035] Stage 5;

[0036] Camera 6;

[0037] Light source assembly 7, light doubling plate 701, LED light board 702, heat doubling plate 703, inlet fan 704, lamp barrel 705, exhaust fan 706, light source air duct 707;

[0038] Column 8, slide table 801, first slider 802, second slider 803, light source bracket 804, light source mounting hole 8041, locking handle 8042, camera bracket 805, corner bracket 806;

[0039] Hyperspectral camera 9;

[0040] Drive assembly 10, electric slide assembly 1001, lead screw slider 1002, lead screw module 1003, limit switch 1004, closed-loop stepper motor 1005;

[0041] Light source driver 11. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] The core of this invention is to provide a hyperspectral imaging system that can improve the accuracy of sampling.

[0044] For a specific embodiment of the hyperspectral imaging system provided by this utility model, please refer to [link / reference]. Figures 1 to 10 It includes a chassis, a stage 5, a drive assembly 10, a hyperspectral camera 9, a light source assembly 7, and a control assembly.

[0045] like Figure 1 and Figure 2 As shown, the chassis includes a lower housing 2 and an upper housing 1. The upper housing 1 has a single-sided opening located at the bottom. The bottom opening of the upper housing 1 is fastened to the top plate 209 of the lower housing 2, forming an upper chamber between the upper housing 1 and the top plate 209. The upper housing 1 is equipped with an openable door 102 for placing and removing samples into the upper chamber.

[0046] The upper enclosure 1 has a light-blocking effect; in terms of material, it can be either fully or partially light-blocking; and in terms of location, it can be either entirely light-blocking or partially light-blocking. Similarly, the lower enclosure 2 can also have a light-blocking effect.

[0047] like Figure 5As shown, the stage 5, hyperspectral camera 9, and light source assembly 7 are located in the upper chamber. The stage 5 supports the sample. The hyperspectral camera 9 measures the light emitted, transmitted, or reflected by the sample, specifically measuring the continuous spectrum. The light source assembly 7 illuminates the sample, specifically providing the continuous spectrum. The light source assembly 7 can be, as needed, a halogen light source, a line light source based on a cold halogen lamp, an LED, a supercontinuum laser, a thermal light source, sunlight, fluorescence, or other light sources.

[0048] like Figure 5 and Figure 6 As shown, the stage 5 is slidably connected above the top plate 209 of the lower housing. The drive assembly 10 and the control assembly are located in the lower chamber of the lower housing 2. The drive assembly 10 is connected to the stage 5 via a sliding hole on the top plate 209 of the lower housing. The drive assembly 10 drives the stage 5 and its upper sample plate to move back and forth along the extension direction of the sliding hole, which can realize push-broom scanning of the sample. The hyperspectral imaging system is a hyperspectral push-broom imaging system.

[0049] The hyperspectral camera 9, the light source assembly 7, and the drive assembly 10 are electrically connected to the control assembly. The control assembly can be used to power and / or communicate with the hyperspectral camera 9, the light source assembly 7, and the drive assembly 10.

[0050] In the hyperspectral imaging system of this application embodiment, the stage 5, hyperspectral camera 9, and light source assembly 7 are located in the upper chamber. During hyperspectral scanning, the upper chamber where the sample is located is shielded by the upper housing 1, achieving closed scanning, which can reduce or avoid the influence of external stray light, and thus has a wider adaptability to the external environment, improving the accuracy of sampling and information acquisition. In addition, the lower housing 2 houses the drive assembly 10 and the control assembly, and is partitioned with the sample and the hyperspectral camera 9 and light source assembly 7 used for sampling, which has a protective effect on the drive assembly 10 and the control assembly.

[0051] Furthermore, during the structural design of the upper housing 1, since the light source assembly 7 and the hyperspectral camera 9 are obstructed, and considering the heat generated during operation, to improve operational safety, such as... Figure 1 As shown, Figure 2 As shown, the upper housing 1 is also provided with an air inlet 108 and an air outlet 109 for ventilation of the upper chamber.

[0052] In some embodiments, such as Figure 2 and Figure 4As shown, the air outlet 109 is higher than the air inlet 108. A cooling fan 4 is also provided in the upper chamber, with the exhaust side of the cooling fan 4 facing the air outlet 109. Under the action of the cooling fan 4, the cool air outside the chassis is drawn into the upper chamber through the air inlet 108 near the bottom of the upper chassis 1, flows from bottom to top, and is discharged from the air outlet 109 near the top of the upper chassis 1. During the air flow, the heat in the upper chamber is carried away, which can realize the continuous circulation of the internal and external air and avoid the accumulation of heat in the internal sampling environment.

[0053] For example, such as Figure 2 As shown, the upper casing 1 has four side panels, including a first side panel 103, a second side panel 104, a third side panel 105, and a fourth side panel 106 connected end to end to form a ring. A door 102 is located on the first side panel 103. An air vent 109 is located on the third side panel 105, opposite the first side panel 103. Air inlets 108 are located on the second side panel 104 and the fourth side panel 106. The third side panel 105 has multiple air vents 109, for example, two. The second side panel 104 and the fourth side panel 106 each have one air inlet 108. Filter plates can also be installed on the air vents 109 and the air inlets 108. Additionally, each air vent 109 can be fitted with a corresponding cooling fan 4.

[0054] In some embodiments, the inner surface of the upper housing 1 is further provided with sound-absorbing cotton 1012 to reduce the impact of noise generated during sampling on the working environment outside the chassis, such as reducing the transmission of noise generated by the cooling fan 4 to the outside of the chassis. For example Figure 4 In the shaded area, sound-absorbing cotton 1012 is provided on the top surface of the upper chamber, the inner side opposite to the door 102, and the two inner sides adjacent to the door 102.

[0055] In some embodiments, such as Figure 1 As shown, the cabinet door 102 includes two hinged rotating cabinet doors 1021, which are arranged horizontally in sequence. Each cabinet door 1021 has a handle 1022 at the end closest to it. By pulling the handle 1022, the cabinet door 102 can be opened for taking out or putting in samples at the entrance / exit after the cabinet door 102 is opened.

[0056] In some embodiments, such as Figure 4 As shown, photoelectric switches 1014 are also provided on the door frame of the upper housing 1, located around the cabinet door 102. Specifically, two switches can be installed to match the two cabinet doors 1021, for detecting the opening and closing status of each cabinet door 1021. The photoelectric switches 1014 can be electrically connected to the control components.

[0057] In some embodiments, such as Figure 1As shown, the upper housing 1 is also equipped with an adjustment door 101, which can be located on the first side plate 103 and above the door 102. During assembly, an adjustment port is opened on the upper housing 1, the adjustment door 101 covers the adjustment port and is fixed to the upper housing 1 with screws. In application, the components inside the upper cavity can be adjusted through the adjustment port.

[0058] Furthermore, in the structural configuration of the lower housing 2, such as Figure 1 As shown, the lower enclosure 2 is a fully enclosed enclosure, which can cover the control and drive components inside the lower chamber, improving the protection effect. The lower enclosure 2 may be waterproof if needed.

[0059] In some embodiments, such as Figure 5 and Figure 6 As shown, the lower housing 2 includes a main housing 201 and a chassis 202. The main housing 201 has an opening on one side located at the bottom. The bottom opening of the main housing 201 is fastened to the top of the chassis 202, forming a closed lower chamber between the chassis 202 and the main housing 201. In this configuration, the functional components in the lower chamber can be assembled on the chassis 202 before assembling the main housing 201, facilitating assembly and maintenance of the components within the lower chamber.

[0060] In some embodiments, such as Figure 1 As shown, foot pads 203 can also be installed on the bottom surface of the lower housing 2 for support, specifically rubber pads can be selected.

[0061] Furthermore, in terms of chassis assembly, to facilitate the maintenance of the internal structure of the upper chamber, the upper chassis 1 can be detachably fixed to the lower chassis 2, so that the upper chassis 1 can be selectively disassembled and assembled according to the application scenario.

[0062] In some embodiments, to achieve detachability, such as Figure 3 As shown, the upper housing 1 has an upper locking ring 1010 on its bottom outer side, and the lower housing 2 has a lower locking ring 208 on its top outer side. When the upper housing 1 is fastened onto the lower housing 2, the through hole of the upper locking ring 1010 aligns with the corresponding through hole of the lower locking ring 208, and is locked by inserting a pin 1011, allowing for convenient and quick selective disassembly of the upper housing 1. Of course, in other embodiments, the upper housing 1 and the lower housing 2 can also be snapped or bolted together for detachable fixation.

[0063] In some embodiments, to improve assembly efficiency, such as Figure 4 and Figure 5As shown, the bottom surface of the upper housing 1 is provided with multiple positioning posts 1013, and the top surface of the lower housing 2 is provided with multiple positioning holes 2095. The positioning posts 1013 are inserted into the positioning holes 2095 to guide the upper housing 1 when it is fastened to the lower housing 2, and to complete the positioning between the upper housing 1 and the lower housing 2, preventing the upper housing 1 from sliding relative to the top surface of the lower housing 2. For example, the upper housing 1 is a rectangular body, and the four positioning posts 1013 are located at the bottom of the four corners of the upper housing 1, and the lower housing 2 is a rectangular body, and the four positioning holes 2095 are located at the top of the four corners of the lower housing 2.

[0064] Furthermore, in order to assemble the light source assembly 7 and the hyperspectral camera 9, a support assembly is also provided in the upper chamber. The light source assembly 7 and the hyperspectral camera 9 are connected to the support assembly to support the light source assembly 7 and the hyperspectral camera 9 above the stage 5 for sampling operations.

[0065] In some embodiments, such as Figure 5 As shown, the support assembly includes a column 8, a slide 801, a light source bracket 804, and a camera bracket 805. The column 8 is the main supporting component. The bottom of the column 8 is fixed to the lower housing 2, and the slide 801 is fixed to the column 8, for example, by bolting. A first slider 802 and a second slider 803 are arranged sequentially from bottom to top on the slide 801. The first slider 802 and the second slider 803 can be adjusted in height by sliding on the slide 801.

[0066] Among them, such as Figure 5 As shown, the camera bracket 805 is fixed on the second slider 803, and the hyperspectral camera 9 is fixed on the camera bracket 805 so that the height of the hyperspectral camera 9 can be adjusted according to the sampling requirements, and the upper chamber can be compatible with lenses of various lengths and focal lengths.

[0067] Among them, such as Figure 5 As shown, the light source bracket 804 is fixed on the first slider 802, and the light source assembly 7 is fixed on the light source bracket 804. The light source assembly 7 can also be raised and lowered by the first slider 802 according to the required light intensity.

[0068] In some embodiments, such as Figure 5 As shown, both light source components 7 are fixed to the light source bracket 804 and are located on both sides of the hyperspectral camera 9 in the horizontal direction. At this time, the two light source components 7 are placed on both sides of the hyperspectral camera 9, providing comprehensive illumination from both sides of the hyperspectral camera 9.

[0069] In some embodiments, to achieve the fixing of the column 8, such as... Figure 5 and Figure 6As shown, the lower box 2 has a column hole on its lower box top plate 209. The bottom end of the column 8 is fixed to the chassis 202 and extends through the column hole into the upper chamber above the lower box top plate 209. Optionally, the column 8 and the chassis 202 can be fixed by a corner bracket 806.

[0070] In some embodiments, to achieve height adjustment of the slider, such as Figure 5 As shown, the first slider 802 and the second slider 803 are slidably connected to the slide table 801, and each of the first slider 802 and the second slider 803 is provided with a knob. After the first slider 802 and the second slider 803 slide to the selected height, they can be locked by rotating the corresponding knob, thus locking the position of the first slider 802 and the second slider 803 on the slide table 801. The knob can be a circular knob. Of course, in other embodiments, the first slider 802 and the second slider 803 can also be connected to a lifting drive, such as an electric drive or a hydraulic drive, to adjust and lock the height.

[0071] In some embodiments, to improve the applicability of the light source assembly 7, such as Figure 5 As shown, the light source assembly 7 has a connecting rod, and the light source bracket 804 has a light source mounting hole 8041 with a notch. The connecting rod extends into the light source mounting hole 8041, which can be a round hole. A locking handle 8042 is connected to the notch and deforms the light source mounting hole 8041 to compress and detachably fix the connecting rod. At this time, the mounting angle of each light source assembly 7 on the light source bracket 804 is adjustable, allowing the illumination angle to be arbitrarily adjusted, thus ensuring that the illumination areas of the two light source assemblies 7 overlap with the central area of ​​the hyperspectral camera 9's lens image.

[0072] Specifically, such as Figure 5 As shown, the light source bracket 804 is horizontally positioned, with light source mounting holes 8041 at both ends in the horizontal direction for connecting one light source assembly 7 respectively. The light source mounting holes 8041 are round holes. The locking handle 8042 can be threadedly connected to one or both parts of the notch on the light source bracket 804. By screwing the locking handle 8042, adjusting the size of the notch and the shape of the light source mounting holes 8041, the light source mounting holes 8041 are compressed and deformed, thereby fixing the light source bracket and simultaneously locking the fixed angle of the light source assembly 7.

[0073] In some embodiments, such as Figure 5 As shown, a camera 6 can also be installed in the upper chamber to photograph the sample, for example, to monitor the sampling process. Specifically, the camera 6 is fixedly connected or slidably connected to the column 8 or the slide table 801. In addition, the camera 6 can be located below the hyperspectral camera 9 and the light source assembly 7.

[0074] Furthermore, in the light source assembly 7, such as Figure 8 As shown, it includes a lamp panel assembly, which comprises multiple LED lamp panels 702. The LED lamp panels 702 are broadband LED light sources, more specifically, broadband continuous light sources. Optionally, the LED lamp panels 702 in the lamp panel assembly are arranged in a line with intervals, and the light-emitting surfaces of the LED lamp panels 702 face the same side. The illumination width of the lamp panel assembly is typically greater than the field of view of the hyperspectral camera 9. Using this type of LED light source can satisfy the continuous spectrum required for hyperspectral sampling, avoid the influence of emitted heat light on sample characteristics, and maintain the stability of its output brightness, especially in the infrared band.

[0075] In some embodiments, to improve the light emission effect, such as Figure 8 As shown, the light source assembly 7 also includes a light-diffusing plate 701, located on the light-emitting side of the LED light panel 702, specifically it can be attached to the light-emitting surface of the LED light panel 702. The light-diffusing plate 701 can evenly disperse the light emitted by the LED beads on the LED light panel 702.

[0076] In some embodiments, to facilitate assembly and ensure heat dissipation, such as Figure 8 As shown, the light source assembly 7 includes a lamp barrel 705, a heat distribution plate 703, and a light source fan.

[0077] The lamp barrel 705 is the outer shell of the light source assembly 7, and can be made of metal for good heat dissipation. The lamp panel assembly is located inside the lamp barrel 705, and a light-diffusing plate 701 is provided on the light outlet of the lamp barrel 705, with the light-emitting surface of the LED lamp panel 702 facing the light-diffusing plate 701.

[0078] The heat-dissipating plate 703 is built into the lamp barrel 705 and is located on the side of the lamp panel assembly opposite the light-emitting surface of the LED lamp panel 702. The heat generated by the lamp panel assembly can be quickly and evenly transferred on the heat-dissipating plate 703, ensuring that the temperature of each LED lamp panel 702 is controlled at the same level, thus guaranteeing spectral consistency among different LED lamp panels 702. Preferably, thermally conductive silicone grease is applied to the contact surface between the lamp panel assembly and the heat-dissipating plate 703 to improve heat transfer efficiency.

[0079] The lamp holder 705 is permeated with a light source air duct 707. The lamp panel assembly and the light source air duct 707 are located on both sides of the heat distribution plate 703, and a light source fan is installed in the light source air duct 707. Specifically, the light source fan includes an intake fan 704 and an exhaust fan 706, located at both ends of the light source air duct 707, to guide cold air. The intake fan 704 draws in external cold air, and the exhaust fan 706 exhausts hot air from the light source air duct 707. During the airflow process, the heat on the lamp panel assembly and the heat distribution plate 703 is carried away, maintaining the LED beads of the LED panel 702 at the optimal operating temperature. Compared with the traditional light source structure, this light source assembly 7 has fewer light source fans and can increase the fan diameter, ensuring airflow while reducing speed and noise.

[0080] In some embodiments, such as Figure 5 As shown, the light source air duct 707 is horizontally positioned, allowing the hot air exhausted from heat dissipation to be discharged horizontally, avoiding direct blowing onto the sample on the stage 5. At this time, the LED light panel 702 is located below the light source air duct 707, emitting light downwards.

[0081] Furthermore, in the drive component 10, to achieve smooth movement of the stage 5 and the sample on it, such as... Figure 6 As shown, the drive assembly 10 includes a drive motor connected to the stage 5, which drives the stage 5 as a drive source.

[0082] The drive motor is a closed-loop stepper motor 1005. The closed-loop stepper motor 1005 is equipped with an encoder, which can detect the actual speed of the closed-loop stepper motor 1005 in real time. When the deviation exceeds a certain range, an alarm will be triggered to ensure that the stage 5 runs accurately and stably at the set pushing and sweeping speed.

[0083] Specifically, the control components include a main control board and a motor driver 302. The main control board drives the closed-loop stepper motor 1005 to operate via the motor driver 302. The speed signal of the closed-loop stepper motor 1005 is fed back to the motor driver 302. The motor driver 302 can automatically determine the speed deviation according to a preset program. If the speed exceeds a reasonable range, it stops the operation of the closed-loop stepper motor 1005 and sends a speed over-tolerance alarm signal to the main control board. At this time, the hyperspectral camera 9, combined with the LED broadband continuous light source and the stage 5 driven by the closed-loop stepper motor 1005, can achieve stable push-broom sampling.

[0084] In some embodiments, the drive assembly 10 includes a drive motor and a transmission mechanism connected to the output end of the drive motor, so as to transmit power through the transmission mechanism to drive the stage 5 to move. Figure 2As shown, the sliding hole provided on the lower box top plate 209 of the lower box 2 is an elongated sliding groove 2096, specifically two parallel ones. The output end of the transmission mechanism is connected to the platform 5 via the elongated sliding groove 2096 to drive the platform 5 to reciprocate along the extension direction of the elongated sliding groove 2096.

[0085] In some embodiments, such as Figure 6 As shown, the transmission mechanism is an electric slide assembly 1001, which includes a lead screw and nut assembly. The lead screw and nut assembly includes a lead screw module 1003 rotatably disposed in the lower chamber and a lead screw slider 1002 connected to the lead screw module 1003. The lead screw slider 1002 extends into the elongated slide groove 2096 and is fixedly connected to the platform 5. A drive motor drives the lead screw slider 1002 to rotate, causing it to reciprocate linearly in the elongated slide groove 2096. The lead screw slider 1002 drives the platform 5 to move synchronously. Of course, in other embodiments, the transmission mechanism can also be a gear transmission mechanism, a belt transmission mechanism, etc.

[0086] In some embodiments, such as Figure 6 As shown, a limit switch 1004 is also provided on one side of the lead screw module 1003 to detect the position of the lead screw slider 1002 and limit the movable stroke of the lead screw slider 1002.

[0087] Furthermore, in control components, such as Figure 2 , Figure 6 and Figure 7 As shown, it includes a hub 301, a motor driver 302, and a light source driver 11. The light source assembly 7, the hyperspectral camera 9, the motor driver 302, and the light source driver 11 are electrically connected to the hub 301.

[0088] The hub 301 centrally connects and integrates cables or wires. Devices such as the hyperspectral camera 9, camera 6, and light source assembly 7 can be uniformly connected to an external control host, such as an external computer (PC), via the hub 301. Optionally, the hub 301 integrates a main control board with a processor chip capable of performing functional program calculations. In this case, the hub 301 not only aggregates signal interfaces but also automatically executes commands to activate components. Alternatively, the hub 301 can function as a HUB, aggregating the signal inputs from multiple devices connected to the hyperspectral imaging system and outputting them through a single interface to connect to an external control host.

[0089] Among them, such as Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, the motor driver 302 is electrically connected to the hub 301, and the drive motor in the drive assembly 10 is electrically connected to the motor driver 302 to realize the power supply and / or control of the drive motor.

[0090] Among them, such as Figure 6 , Figure 9 and Figure 10 As shown, the light source driver 11 is electrically connected to the hub 301 and the light source assembly 7. During operation, the light source driver 11 receives instructions from the main control board and controls the lighting of the light source assembly 7.

[0091] In some embodiments, for ease of maintenance, such as Figure 7 As shown, an inspection port 207 is provided through the side plate of the lower housing 2, and the maintenance box 3 is retractably connected to the lower chamber through the inspection port 207. The hub device 301 and the motor driver 302 are located on the maintenance box 3 and can move in and out of the lower chamber with the maintenance box 3 for easy maintenance.

[0092] Specifically, such as Figure 7 As shown, the maintenance box 3 is fixed to one side panel of the lower housing 2 by screws 305. After removing the screws 305, it can be pulled out through the maintenance port 207 to bring the hub device 301 and motor driver 302 out of the lower housing 2 for convenient maintenance. In addition, to prevent the maintenance box 3 from completely coming out of the lower housing 2, a limiting edge 304 is provided at the end of the maintenance box 3 in the direction of moving out of the maintenance port 207. The limiting edge 304 abuts against the side panel of the lower housing 2 to prevent the box from completely coming out of the lower housing.

[0093] In addition, such as Figure 7 As shown, the maintenance box 3 is divided into upper and lower layers. The hub device 301 and / or the main control board are fixed to the upper eaves 303 of the maintenance box 3, and the motor driver 302 is fixed to the lower bottom surface of the maintenance box 3. The layered arrangement can improve the space utilization rate. The support of the upper eaves 303 can prevent the hub device 301 and the motor driver 302 from being squeezed together.

[0094] In some embodiments, to facilitate the electrical connection between the control components and the devices within the upper cavity, such as... Figure 5 and Figure 9 As shown, the lower box 2's top plate 209 is also provided with a first interface 2091, a second interface 2092, a third interface 2093 and a fourth interface 2094, which are connected to corresponding components to realize power supply, communication and / or control.

[0095] In some embodiments, such as Figure 9 As shown, the first interface 2091, the second interface 2092, and the third interface 2093 are extensions of the main control board's functional interfaces. The first interface 2091, the second interface 2092, and the third interface 2093 are all electrically connected to the hub device 301 in the lower chamber.

[0096] The first interface 2091 is electrically connected to the hyperspectral camera 9. Specifically, the cable of the hyperspectral camera 9 is plugged into the first interface 2091, which is mainly used for power supply, communication control, and image transmission. During operation, the main control board supplies power to the hyperspectral camera 9 through the first interface 2091 and controls the image taking operation through communication. The hyperspectral camera 9 also transmits image data back to the main control board through the first interface 2091.

[0097] The second interface 2092 is electrically connected to the camera 6 in the upper chamber. Specifically, the cable of the camera 6 is plugged into the second interface 2092, mainly for power supply and image transmission. During operation, the main control board supplies power to the camera 6 through the second interface 2092, and the camera 6 transmits image data back to the main control board.

[0098] The third interface 2093 electrically connects to the cooling fan 4, the photoelectric switch 1014, and the indicator light 107 on the outer top of the upper housing 1. Specifically, the cables of the cooling fan 4, indicator light 107, and photoelectric switch 1014 are plugged into the third interface 2093, mainly for power supply, communication control, and signal feedback functions. During operation, the main control board supplies power to the connected components through the third interface 2093, controls the operation of the cooling fan 4 and the illumination status of the indicator light 107, and the photoelectric switch 1014 transmits the opening and closing signal of the cabinet door 1021 back to the main control board through the third interface 2093. The indicator light 107 can indicate relevant operating statuses through on / off states or light states, such as flashing or constant light, for example, the start / stop of the hyperspectral camera 9, the light source assembly 7, the start / stop of the drive assembly, and the alarm light for emergency situations.

[0099] In some embodiments, such as Figure 9 As shown, the light source assembly 7 is electrically connected to the hub device 301 via the fourth interface 2094 and the light source driver 11 in sequence. Specifically, the cables of the two light source assemblies 7 are plugged into the fourth interface 2094. After receiving the instructions from the main control board, the light source driver 11 controls the lighting of the light source assembly via the fourth interface 2094.

[0100] In some embodiments, such as Figure 2 and Figure 9 As shown, the light source driver 11 has a charging port for an external power supply. Specifically, a power socket 206 is exposed on the lower housing 2, which is electrically connected to the charging port of the light source driver 11. The external power supply outside the housing supplies power to the light source driver 11 through the power socket 206. The light source driver 11 has a built-in power conversion module that can convert 220V AC power into DC power to power all electrical components. Specifically, it can directly supply power to the electrical components or supply power to the electrical components through the hub device 301.

[0101] In some embodiments, such as Figure 2As shown, the lower housing 2 also has an exposed control port 205, specifically a PC interface. The control port 205 is electrically connected to the hub 301. The hub 301 integrates the main control board. An external control host, such as an external computer, is located outside the chassis. The control host sends commands to the main control board via the control port 205 to communicate and control the operation of all devices within the chassis, and also collects image data from the hyperspectral camera 9 and the camera 6 through the main control board.

[0102] In some embodiments, the lower housing 2 is also provided with a power switch 204 electrically connected to the main control board to control the operating status of the hyperspectral imaging system.

[0103] The hyperspectral imaging system in the embodiments of this application, such as Figure 10 As shown, the working principle includes: after the PC issues a sampling command, the hub device 301 controls the light source driver 11 to light up each LED broadband light source in the light source assembly 7. Then, the motor driver 302 controls the closed-loop stepper motor 1005 to drive the stage 5 on the lead screw module 1003 and the sample to perform uniform sweeping motion. While the sample is being swept, the hub device 301 receives the reflected spectral information collected by the hyperspectral camera 9, processes the image information data, and transmits it to the PC for user viewing and analysis. The camera 6 captures the internal environment of the upper chamber in real time and transmits it to the PC through the hub device 301. The noise generated by the operation of the light source fan and other structures of the light source assembly 7 is suppressed by the sound insulation cotton or sound absorption cotton 1012 on the chassis. The heat generated by the operation of the circuit board and other structures in the light source assembly 7 is discharged through the cooling fan 4 of the chassis.

[0104] It should be noted that when an element is referred to as "fixing" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, in the description of this utility model, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0105] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0106] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0108] The hyperspectral imaging system provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A hyperspectral imaging system, characterized in that, It includes a chassis, a stage (5), a drive assembly (10), a hyperspectral camera (9), a light source assembly (7), and a control assembly; The chassis includes a lower housing (2) and an upper housing (1). The upper housing (1) has a light-shielding effect. The upper housing (1) has a single-sided opening structure with the opening located at the bottom. The bottom opening of the upper housing (1) is fastened to the top plate (209) of the lower housing (2). An upper chamber is formed between the upper housing (1) and the top plate (209) of the lower housing. The upper housing (1) is provided with an openable door (102). The stage (5), the hyperspectral camera (9), and the light source assembly (7) are located in the upper chamber. The stage (5) is slidably connected above the top plate (209) of the lower box. The drive assembly (10) and the control assembly are located in the lower chamber of the lower box (2). The drive assembly (10) is connected to the stage (5) through a sliding hole on the top plate (209) of the lower box. The hyperspectral camera (9), the light source assembly (7), and the drive assembly (10) are electrically connected to the control assembly.

2. The hyperspectral imaging system according to claim 1, characterized in that, The upper housing (1) is also provided with an air inlet (108) and an air outlet (109), and the air outlet (109) is higher than the air inlet (108). The upper chamber is also provided with a cooling fan (4), and the air outlet side of the cooling fan (4) faces the air outlet (109).

3. The hyperspectral imaging system according to claim 1, characterized in that, The inner surface of the upper housing (1) is also provided with sound-absorbing cotton (1012).

4. The hyperspectral imaging system according to claim 1, characterized in that, The upper box (1) is detachably fixed to the lower box (2).

5. The hyperspectral imaging system according to claim 1, characterized in that, The upper chamber is also provided with a support assembly, which includes a column (8), a slide (801), a light source support (804), and a camera support (805). The bottom of the column (8) is fixed to the lower box (2), and the slide (801) is fixed on the column (8). A first slider (802) and a second slider (803) are arranged sequentially from bottom to top on the slide (801). The first slider (802) and the second slider (803) can be adjusted in height by sliding on the slide (801). The camera bracket (805) is fixed on the second slider (803), and the hyperspectral camera (9) is fixed on the camera bracket (805); The light source bracket (804) is fixed on the first slider (802), and the two light source components (7) are both fixed on the light source bracket (804) and are located on both sides of the hyperspectral camera (9) in the horizontal direction.

6. The hyperspectral imaging system according to claim 5, characterized in that, The light source assembly (7) has a connecting rod, and the light source bracket (804) has a light source mounting hole (8041) with a notch. The connecting rod extends into the light source mounting hole (8041), and is connected to the notch by a locking handle (8042) and causes the light source mounting hole (8041) to deform, so as to squeeze and detachably fix the connecting rod.

7. The hyperspectral imaging system according to claim 1, characterized in that, The light source assembly (7) includes a lamp barrel (705), a lamp panel assembly, a heat distribution plate (703), and a light source fan; The lamp panel assembly is disposed inside the lamp barrel (705). The lamp panel assembly includes multiple LED lamp panels (702). The LED lamp panels (702) are LED broadband continuous light sources, and the light-emitting surfaces of the LED lamp panels (702) face the same side. The heat distribution plate (703) is built into the lamp barrel (705) and is located on the side of the lamp panel assembly opposite to the light-emitting surface of the LED lamp panel (702); The lamp barrel (705) is provided with a light source air duct (707) running through it. The lamp panel assembly and the light source air duct (707) are located on both sides of the heat equalization plate (703). A light source fan is provided in the light source air duct (707).

8. The hyperspectral imaging system according to any one of claims 1 to 7, characterized in that, The drive assembly (10) includes a closed-loop stepper motor (1005) connected to the stage (5).

9. The hyperspectral imaging system according to any one of claims 1 to 7, characterized in that, It also includes a maintenance box (3), with a maintenance port (207) provided through the side plate of the lower box (2), and the maintenance box (3) is retractably connected to the lower chamber through the maintenance port (207); The control component includes a hub (301) and a motor driver (302) disposed on the inspection box (3). The light source component (7), the hyperspectral camera (9), and the motor driver (302) are electrically connected to the hub (301). The drive component (10) includes a drive motor connected to the stage (5) and the drive motor is electrically connected to the motor driver (302).

10. The hyperspectral imaging system according to any one of claims 1 to 7, characterized in that, The lower box top plate (209) is provided with a first interface (2091), a second interface (2092), a third interface (2093) and a fourth interface (2094), and the control component includes a hub device (301) and a light source driver (11). The first interface (2091), the second interface (2092), and the third interface (2093) are all electrically connected to the hub device (301). The first interface (2091) is electrically connected to the hyperspectral camera (9), the second interface (2092) is electrically connected to the camera (6) in the upper chamber, and the third interface (2093) is electrically connected to the cooling fan (4) in the upper chamber. The light source assembly (7) is electrically connected to the hub device (301) in sequence through the fourth interface (2094) and the light source driver (11). The light source driver (11) has a charging port for an external power supply. The lower housing (2) is also provided with an exposed control port (205), which is electrically connected to the hub device (301).

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