A nondestructive optical detection device for water-containing samples

Abstract

The present invention provides a nondestructive optical detection device for water-containing samples, comprising a stage, a light source incident device and a spectrum detection device; the stage is used to place the sample to be tested; the light source incident device comprises an adjustment bracket, the adjustment bracket is used to install multiple light sources, the light sources are used to emit incident light toward the sample to be tested, and the adjustment bracket is used to adjust the positions and light output angles of the multiple light sources respectively; the spectrum detection device has a detection end, and the detection end is used to extend toward the sample to be tested. The present invention facilitates the use of different light sources to emit incident light to the sample to be tested at different positions and different incident angles, and can realize all-round spectrum detection of the sample to be tested, ensuring the accuracy of the detection results.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a non-destructive optical detection device for water-containing samples. Background Art

[0002] Nondestructive optical testing is to use optical properties to detect defects and physical, chemical and other parameters of the object being tested without damaging or affecting the performance of the object being tested. Nondestructive optical testing technology is particularly suitable for sorting the quality of water-containing foods such as fruits and fresh produce.

[0003] Existing production-type non-destructive optical testing equipment mainly pursues throughput. During optical testing, a light source with a fixed wavelength and a fixed irradiation angle is often set. After the light emitted by the light source is irradiated to the sample to be tested, the light passing through the sample is detected by a detector with a fixed detection position. During the testing process, the posture of the sample is also randomly arranged. This testing method focuses on efficiency at the expense of accuracy, which is conducive to controlling production costs. It is not a device for studying deep testing mechanisms and iterative judgment models.

[0004] At present, there are many testing devices in the laboratory stage for non-destructive detection of the internal moisture distribution of fruits. However, these testing devices lack unified standards and are mostly self-built, without considering the multi-dimensional needs of research. In the related art, a handheld fruit internal water core disease sorting device is disclosed. However, the light source of the device has a fixed irradiation angle and cannot detect the fruit to be tested in all directions. Some areas on the fruit to be tested will inevitably be missed during the test, which affects the accuracy of the test results to a certain extent. Summary of the invention

[0005] The invention provides a nondestructive optical detection device for water-containing samples, which is used to solve the problem that the existing nondestructive optical detection equipment cannot detect the fruits to be detected in all directions, thus affecting the accuracy of the detection results.

[0006] The present invention provides a nondestructive optical detection device for water-containing samples, comprising: a stage, a light source incident device, and a spectrum detection device; the stage is used to place the sample to be tested; the light source incident device comprises an adjustment bracket, the adjustment bracket is used to install multiple light sources, the light sources are used to emit incident light toward the sample to be tested, and the adjustment bracket is used to respectively adjust the positions and light output angles of the multiple light sources; the spectrum detection device has a detection end, and the detection end is used to extend toward the sample to be tested.

[0007] According to a nondestructive optical detection device for water samples provided by the present invention, the adjustment bracket includes an arc-shaped fixing frame, a light source mounting seat and an adapter plate; one end of the arc-shaped fixing frame is connected to the stage, and the other end is connected to the adapter plate; the arc-shaped fixing frame includes a plurality of arc-shaped fixing frames, which are distributed in a circle relative to the adapter plate; the light source mounting seat is installed on the arc-shaped fixing frame and can move along the extension direction of the arc-shaped fixing frame, and the light source mounting seat is used to install the light source.

[0008] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the light source mounting seat includes a moving seat, a gear driving mechanism and a guiding mechanism; the gear driving mechanism includes a driving motor and a gear pair, the gear pair includes a gear and an arc-shaped rack, the arc-shaped rack is installed on the arc-shaped fixing frame and is arranged along the extension direction of the arc-shaped fixing frame, and the output end of the driving motor is connected to the gear; the guiding mechanism includes a slider and an arc-shaped guide rail, the arc-shaped guide rail is installed on the arc-shaped fixing frame and is arranged along the extension direction of the arc-shaped fixing frame, and the slider is slidably installed on the arc-shaped guide rail along the extension direction; the driving motor and the slider are respectively connected to the moving seat, and the moving seat is used to install the light source.

[0009] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the arc-shaped fixing frames include three, and the three arc-shaped fixing frames are evenly distributed in a circle relative to the adapter plate; the central angle corresponding to the arc-shaped trajectory of the light source mounting seat moving on the arc-shaped fixing frame is 0°-80°, and the direction of the incident light emitted by the light source is along the radial direction of the arc-shaped fixing frame.

[0010] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the stage includes a fixed stage and a movable stage; the movable stage is provided with a posture adjustment seat, and the posture adjustment seat is used to place the sample to be tested, so as to adjust the posture of the sample to be tested; the movable stage is installed on the fixed stage and can be moved relative to the fixed stage, so as to move the sample to be tested to the detection station corresponding to the detection end of the spectral detection device.

[0011] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the posture adjustment seat includes a storage seat and a rolling adjustment mechanism; a protective structure is formed around the storage seat, and the storage seat is used to place the sample to be tested in a limited area of ​​the protective structure; a light outlet is constructed in the middle of the storage seat, and the detection end of the spectrum detection device extends to the light outlet; the rolling adjustment mechanism includes a friction shaft and a rotation drive mechanism, the friction shaft is connected to the rotation drive mechanism and is located on the inner side of the protective structure; and a plurality of rolling adjustment mechanisms are provided.

[0012] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the posture adjustment seat also includes a spherical support, which is installed on the storage seat and located on the inner side of the enclosure structure; the enclosure structure has a first side, a second side, a third side and a fourth side connected in sequence, and the spherical support is close to the corner position of the first side and the second side of the enclosure structure; there are two rolling adjustment mechanisms, one of which has a friction axis arranged along the third side, and the other has a friction axis arranged along the fourth side.

[0013] A nondestructive optical detection device for water samples provided according to the present invention also includes: a shell cover; the shell cover is arranged on the fixed platform, and the shell cover is respectively constructed with an inlet and an outlet on the opposite side walls along the first direction, and the inlet and the outlet are both equipped with a blackout curtain; the movable platform can reciprocate along the first direction, and the movable platform is provided with a first station and a second station at intervals along the first direction, and the first station and the second station are both provided with a posture adjustment seat, and when the first station is located at the detection station, the second station is located on the outside of the shell cover.

[0014] According to a nondestructive optical detection device for water-containing samples provided by the present invention, the spectral detection device includes a three-axis translation stage, a detection optical fiber and a fiber optic spectrometer; one end of the detection optical fiber is connected to the three-axis translation stage and is used to extend to the sample to be tested, and the other end of the detection optical fiber is connected to the fiber optic spectrometer.

[0015] A nondestructive optical detection device for water-containing samples provided by the present invention also includes: a background light calibration device; the background light calibration device includes a deflection mechanism, an attenuation plate and a calibration optical fiber; the deflection mechanism is installed on the stage, the attenuation plate is installed on the deflection end of the deflection mechanism, and is used to receive the incident light of the light source; one end of the calibration optical fiber is connected to the attenuation plate, and the other end is used to connect to the optical fiber spectrometer; it also includes: a camera module, the camera module is used to obtain video information of the current detection environment of the stage; the light source includes: a fan, a broadband light source and a focusing lens, the fan, the broadband light source and the focusing lens are packaged as one, the focusing lens is located on the light-emitting side of the broadband light source, and the fan is located on the light-emitting side away from the broadband light source.

[0016] The nondestructive optical detection device for water-containing samples provided by the present invention is provided with a stage, a light source incident device and a spectrum detection device. When testing the water-containing test sample, the test sample can be placed on the stage, the light source of the light source incident device emits incident light to the test sample, the spectrum detection device receives the light passing through the test sample, and detects the internal defects and other physical and chemical parameters of the test sample through spectrum analysis. Since the adjustment bracket on the light source incident device can adjust the position and light output angle of multiple light sources at the same time, it is convenient to use different light sources to emit incident light to the test sample at different positions and different incident angles, and the test sample can be subjected to all-round spectrum detection, ensuring the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of a nondestructive optical detection device for water-containing samples provided by the present invention;

[0019] Figure 2 It is a schematic diagram of the installation structure of the light source mounting seat provided by the present invention on the arc-shaped fixing frame;

[0020] Figure 3 It is a schematic diagram of the arrangement structure of the spectrum detection device and the background light calibration device provided by the present invention;

[0021] Figure 4 It is a structural schematic diagram of the posture adjustment seat provided by the present invention;

[0022] Reference numerals:

[0023] 1: stage; 2: light source incident device; 3: spectrum detection device;

[0024] 4: Background light calibration device; 5: Camera module; 6: Shell;

[0025] 7: light source; 8: sample to be tested; 11: fixed platform;

[0026] 12: Screw drive mechanism; 13: Moving platform; 14: Posture adjustment seat;

[0027] 141: storage seat; 142: rolling adjustment mechanism; 143: spherical support;

[0028] 1411: enclosure structure; 1412: light outlet; 21: arc-shaped fixing frame;

[0029] 22: Light source mounting seat; 23: Adapter plate; 221: Moving seat;

[0030] 222: gear drive mechanism; 223: guide mechanism; 31: three-axis translation stage;

[0031] 32: detection optical fiber; 41: deflection mechanism; 42: attenuation sheet;

[0032] 43: Calibration fiber; 61: Import; 62: Export;

[0033] 63: Blackout curtain; 71: Fan; 72: Broad spectrum light source;

[0034] 73: focusing lens; 100: first station; 200: second station. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0036] Combine the following Figures 1 to 4 A non-destructive optical inspection device for aqueous samples according to the present invention is described.

[0037] like Figure 1 As shown, this embodiment provides a non-destructive optical detection device for water-containing samples, including: a stage 1, a light source incident device 2 and a spectrum detection device 3; the stage 1 is used to place a sample 8 to be tested; the light source incident device 2 includes an adjustment bracket, the adjustment bracket is used to install multiple light sources 7, the light source 7 is used to emit incident light toward the sample 8 to be tested, and the adjustment bracket is used to adjust the positions and light output angles of the multiple light sources 7 respectively; the spectrum detection device 3 has a detection end, and the detection end is used to extend toward the sample 8 to be tested. Among them, the sample 8 to be tested shown in this embodiment can be specifically fruits such as apples and pears.

[0038] Specifically, this embodiment is provided with a stage 1, a light source incident device 2 and a spectrum detection device 3. When testing a water-containing test sample 8, the test sample 8 can be placed on the stage 1, and the light source 7 on the light source incident device 2 emits incident light to the test sample 8. The spectrum detection device 3 receives the light passing through the test sample 8, and detects the internal defects and other physical and chemical parameters of the test sample 8 through spectrum analysis. Since the adjustment bracket on the light source incident device 2 can adjust the positions and light output angles of multiple light sources 7 at the same time, it is convenient to use different light sources 7 to emit incident light to the test sample 8 at different positions and different incident angles, and a full range of spectrum detection can be performed on the test sample 8, ensuring the accuracy of the detection results.

[0039] It should be pointed out here that since there are multiple light sources 7 shown in this embodiment, the light source 7 can be set as a plurality of single-wavelength light sources, or as a wide-spectrum light source, and a filter for adjusting different wavelengths can be set on the light output side of the wide-spectrum light source.

[0040] At the same time, this embodiment can also individually control the power and incident angle of each light source 7.

[0041] In a specific embodiment, the light source 7 can be specifically configured as a package module that is packaged as a whole by a fan 71, a wide-spectrum light source 72, and a focusing lens 73, wherein the focusing lens 73 is located on the light-emitting side of the wide-spectrum light source 72, and the fan 71 is located on the light-emitting side away from the wide-spectrum light source 72. Thus, the light emitted by the package module is focused light, which can ensure the incident effect on the sample 8 to be tested. Among them, by providing the fan 71, the present embodiment can timely perform heat dissipation treatment on the package module to prevent the temperature from affecting the spectrum detection of the sample 8 to be tested.

[0042] like Figure 1 and Figure 2 As shown, the adjustment bracket shown in this embodiment includes an arc-shaped fixing frame 21, a light source mounting seat 22 and an adapter plate 23; one end of the arc-shaped fixing frame 21 is connected to the stage 1, and the other end is connected to the adapter plate 23; the arc-shaped fixing frame 21 includes a plurality of parts, which are distributed in a circle relative to the adapter plate 23; the light source mounting seat 22 is mounted on the arc-shaped fixing frame 21 and can move along the extension direction of the arc-shaped fixing frame 21, and the light source mounting seat 22 is used to mount the light source 7. Wherein, in the case where the arc-shaped fixing frame 21 is bent along an arc-shaped trajectory, the extension direction of the arc-shaped fixing frame 21 is specifically the direction along the arc-shaped trajectory.

[0043] Specifically, the arc-shaped fixing frame 21 shown in this embodiment can be specifically in the shape of an arc. When multiple arc-shaped fixing frames 21 are distributed in a circle relative to the adapter plate 23, the inner side surfaces of the arc-shaped fixing frames 21 are all oriented toward the central axis of the adapter plate 23. In this embodiment, the end surface of the adapter plate 23 can be further arranged to be parallel to the table surface where the stage 1 is located, and the outer side surfaces of the multiple arc-shaped fixing frames 21 are distributed on the same spherical surface.

[0044] Here, by selecting an arc-shaped fixing frame 21 with a suitable radius, the focusing point of the multiple light sources 7 when incident can always be located above the detection station, that is, above the center of the sample 8 to be tested, for easy detection.

[0045] Furthermore, if Figure 2 As shown, the light source mounting seat 22 shown in this embodiment includes a moving seat 221, a gear driving mechanism 222 and a guiding mechanism 223; the gear driving mechanism 222 includes a driving motor and a gear pair, the gear pair includes a gear and an arc-shaped rack, the arc-shaped rack is installed on the arc-shaped fixing frame 21 and is arranged along the extension direction of the arc-shaped fixing frame 21, and the output end of the driving motor is connected to the gear; the guiding mechanism 223 includes a slider and an arc-shaped guide rail, the arc-shaped guide rail is installed on the arc-shaped fixing frame 21 and is arranged along the extension direction of the arc-shaped fixing frame 21, and the slider is slidably installed on the arc-shaped guide rail along the extension direction of the arc-shaped fixing frame 21; the driving motor and the slider are respectively connected to the moving seat 221, and the moving seat 221 is used to install the light source 7.

[0046] Among them, the driving motor shown in this embodiment can be specifically a worm gear reducer, that is, the worm gear reducer is provided with a worm gear transmission mechanism, the worm wheel of the worm gear transmission mechanism is meshed with the arc-shaped rack, and the arc-shaped rack is arranged on the inner side of the arc-shaped fixing frame 21.

[0047] Therefore, when the driving motor shown in this embodiment provides rotational drive, based on the transmission of the gear pair and the guiding effect of the guide mechanism 223, the movable seat 221 can be moved along the extension direction of the arc-shaped fixed frame 21. Here, in this embodiment, the light emitting direction of each light source 7 can be specifically arranged along the radial direction of the arc-shaped fixed frame 21. Since the size of the central angle corresponding to the arc trajectory of the light source mounting seat 22 moving on the arc-shaped fixed frame 21 is 0°-80°, when the light source 7 moves with the light source mounting seat 22, the incident angle of the light source 7 can be adjusted within the range of 0°-80° accordingly.

[0048] At the same time, the arc-shaped fixing frames 21 shown in this embodiment include three, and the three arc-shaped fixing frames 21 are evenly distributed around the circumference relative to the adapter plate 23, so that the projections of the three arc-shaped fixing frames 21 on the plane where the adapter plate 23 is located are evenly arranged at 120° along the circumferential direction. In this way, it can be ensured that the light sources 7 arranged on the three arc-shaped fixing frames 21 can emit incident light to the sample 8 to be tested at different orientations and different incident angles, so as to perform all-round detection on the sample 8 to be tested.

[0049] like Figure 1 and Figure 4 As shown, the stage 1 shown in this embodiment includes a fixed table 11 and a movable table 13; the movable table 13 is provided with a posture adjustment seat 14, and the posture adjustment seat 14 is used to place the sample 8 to be tested, so as to adjust the posture of the sample 8 to be tested; the movable table 13 is installed on the fixed table 11 and can be moved relative to the fixed table 11, so as to move the sample 8 to be tested to the detection station corresponding to the detection end of the spectrum detection device 3.

[0050] Among them, the placement posture of the sample to be tested 8 shown in this embodiment can be understood as the placement position of different areas on the sample to be tested 8, for example: the placement posture of the sample to be tested 8 is specifically that the fruit stalk area is placed upward, one end of the fruit stalk area on the sample to be tested 8 that is away from the fruit stalk area is placed upward, etc.

[0051] Here, the posture adjustment seat 14 shown in this embodiment can be a manual adjustment seat known in the art, and the staff can manually adjust the posture of the sample 8 to be tested through the manual adjustment seat. The posture adjustment seat 14 can also be a manipulator, and the staff can also automatically adjust the posture of the sample 8 to be tested by controlling the manipulator.

[0052] Furthermore, the posture adjustment seat 14 shown in this embodiment specifically includes a storage seat 141 and a rolling adjustment mechanism 142; a protective structure 1411 is formed around the storage seat 141, and the storage seat 141 is used to place the sample 8 to be tested in a limited area of ​​the protective structure 1411, and a light outlet 1412 is constructed in the middle of the storage seat 141, and the detection end of the spectrum detection device 3 extends to the light outlet 1412; the rolling adjustment mechanism 142 includes a friction shaft and a rotation drive mechanism, the friction shaft is connected to the rotation drive mechanism, and is located on the inner side of the protective structure 1411; a plurality of rolling adjustment mechanisms 142 are provided.

[0053] Specifically, when there are multiple rolling adjustment mechanisms 142, the friction shafts on the multiple rolling adjustment mechanisms 142 can be arranged into a circular ring structure with the head and tail connected in sequence, and the sample to be tested 8 can be placed on the circular ring structure. When the rotary drive mechanism drives the corresponding friction shaft to rotate, the posture of the sample to be tested 8 can be controlled accordingly by the friction shaft. Among them, the rotary drive mechanism shown in this embodiment is preferably a servo motor, so that according to the control requirements, the friction shaft can be controlled by the servo motor to rotate a preset angle to adjust the sample to be tested 8 to the required placement posture.

[0054] Furthermore, the posture adjustment seat 14 shown in this embodiment also includes a spherical support 143, which is installed on the storage seat 141 and located on the inner side of the enclosure structure 1411; the enclosure structure 1411 has a first side, a second side, a third side and a fourth side connected in sequence, and the spherical support 143 is close to the corner position of the first side and the second side of the enclosure structure 1411; there are two rolling adjustment mechanisms 142, one of which has a friction axis arranged along the third side, and the other has a friction axis arranged along the fourth side. When the friction axes on the two rolling adjustment mechanisms 142 respectively adjust the posture of the sample 8 to be tested, the spherical support 143 can provide support for the sample 8 to be tested.

[0055] Furthermore, if Figure 1 As shown, the detection device shown in this embodiment is also provided with a shell cover 6; the shell cover 6 is covered on the fixed platform 11, and the shell cover 6 is respectively configured with an inlet 61 and an outlet 62 on the opposite side walls along the first direction, and the inlet 61 and the outlet 62 are both equipped with a blackout curtain 63; the moving platform 13 can reciprocate along the first direction, and the moving platform 13 is provided with a first station 100 and a second station 200 at intervals along the first direction, and the first station 100 and the second station 200 are both provided with a posture adjustment seat 14, and when the first station 100 is located at the detection station, the second station 200 is located outside the shell cover 6. In this way, based on the setting of the first station 100 and the second station 200, this embodiment can prepare materials at the station outside the shell cover 6 while testing the sample 8 to be tested at the detection station, which can greatly improve the detection efficiency.

[0056] It should be noted here that in this embodiment, a screw drive mechanism 12 may be provided on the fixed platform 11 , and the screw drive mechanism 12 drives the movable platform 13 to reciprocate along the first direction.

[0057] Furthermore, if Figure 3 As shown, the spectral detection device 3 shown in this embodiment includes a three-axis translation stage 31, a detection optical fiber 32 and a fiber optic spectrometer; one end of the detection optical fiber 32 is connected to the three-axis translation stage 31 and is used to extend to the sample 8 to be tested, and the other end of the detection optical fiber 32 is connected to the fiber optic spectrometer.

[0058] Specifically, one end of the detection optical fiber 32 shown in this embodiment is specifically the detection end of the spectrum detection device 3. In this embodiment, the spatial position of the detection end can be adjusted in the X-axis, Y-axis and Z-axis directions through the three-axis translation stage 31, wherein the X-axis, Y-axis and Z-axis are arranged perpendicular to each other.

[0059] In a specific embodiment, the other end of the detection optical fiber 32 may be connected to a fiber optic beam splitter, and the fiber optic beam splitter may be connected to a plurality of fiber optic spectrometers through transmission optical fibers.

[0060] Among them, this embodiment can specifically set up two fiber optic spectrometers, one of which is a fiber optic spectrometer that introduces silicon material, and the spectral detection range of the fiber optic spectrometer is 300-1100nm, and the other fiber optic spectrometer is a fiber optic spectrometer that introduces indium arsenide material, and the spectral detection range of the fiber optic spectrometer is 1000-1700nm. In this way, this embodiment is based on the setting of two fiber optic spectrometers with different spectral detection ranges, which can achieve coverage of the spectral response range of the ultraviolet-near infrared region, effectively increase the measurable spectral wavelength range, and in addition to collection, it also has analysis functions.

[0061] Furthermore, if Figure 3 As shown, the present embodiment is further provided with a background light calibration device 4; the background light calibration device 4 comprises a deflection mechanism 41, an attenuation plate 42 and a calibration optical fiber 43; the deflection mechanism 41 is installed on the stage 1, the attenuation plate 42 is installed at the deflection end of the deflection mechanism 41, and is used to receive the incident light of the light source; one end of the calibration optical fiber 43 is connected to the attenuation plate 42, and the other end is used to connect to the optical fiber spectrometer.

[0062] The deflection mechanism 41 shown in this embodiment is preferably an electromagnetic deflection mechanism, and based on the power-on control of the electromagnetic deflection mechanism, the deflection end of the electromagnetic deflection mechanism can be swung to the detection station or away from the detection station. Therefore, when the sample 8 to be tested is not placed at the detection station, the attenuation plate 42 can be driven by the deflection mechanism 41 in this embodiment to move the attenuation plate 42 to the focus of the light source 7. By setting the attenuation plate 42, the background light can be uniformly attenuated to the effective light intensity range of the fiber optic spectrometer through the attenuation plate 42, thereby realizing the collection of the background spectrum, so as to facilitate the calibration of the equipment.

[0063] Furthermore, if Figure 3 As shown, the present embodiment is further provided with a camera module 5, which is used to obtain video information of the current detection environment of the stage 1. Specifically, the camera module 5 can be a CCD camera known in the art. Based on the camera module 5, the operator can monitor the detection process of the sample 8 to be tested inside the housing 6, and provide feedback for real-time adjustments in the detection of the sample 8 to be tested.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-destructive optical detection device for water-containing samples, characterized in that: include: A stage for placing the sample to be tested; The light source incident device comprises an adjustment bracket, the adjustment bracket is used to install a plurality of light sources, the light sources are used to emit incident light toward the sample to be tested, and the adjustment bracket is used to adjust the positions and light emitting angles of the plurality of light sources respectively; A spectrum detection device, comprising a detection end, wherein the detection end is used to extend toward the sample to be detected; The adjustment bracket includes an arc-shaped fixing frame, a light source mounting seat and an adapter plate; one end of the arc-shaped fixing frame is connected to the stage, and the other end is connected to the adapter plate; there are multiple arc-shaped fixing frames, which are distributed in a circle relative to the adapter plate; the light source mounting seat is installed on the arc-shaped fixing frame and can move along the extension direction of the arc-shaped fixing frame, and the light source mounting seat is used to install the light source; The light source mounting seat comprises a moving seat, a gear driving mechanism and a guiding mechanism; the gear driving mechanism comprises a driving motor and a gear pair, the gear pair comprises a gear and an arc-shaped rack, the arc-shaped rack is mounted on the arc-shaped fixing frame and is arranged along the extension direction of the arc-shaped fixing frame, and the output end of the driving motor is connected to the gear; the guiding mechanism comprises a slider and an arc-shaped guide rail, the arc-shaped guide rail is mounted on the arc-shaped fixing frame and is arranged along the extension direction of the arc-shaped fixing frame, and the slider is slidably mounted on the arc-shaped guide rail along the extension direction; the driving motor and the slider are respectively connected to the moving seat, and the moving seat is used to mount the light source; The stage comprises a fixed stage and a movable stage; the movable stage is provided with a posture adjustment seat, on which the sample to be tested is placed, so as to adjust the posture of the sample to be tested; The movable platform is mounted on the fixed platform and can move relative to the fixed platform to move the sample to be tested to the detection station corresponding to the detection end of the spectrum detection device; The posture adjustment seat includes a storage seat and a rolling adjustment mechanism; a protective structure is formed around the storage seat, and the storage seat is used to place the sample to be tested in a limited area of ​​the protective structure. A light outlet is configured in the middle of the storage seat, and the detection end of the spectrum detection device extends toward the light outlet; the rolling adjustment mechanism includes a friction shaft and a rotation drive mechanism, and the friction shaft is connected to the rotation drive mechanism and is located on the inner side of the protective structure; The rolling adjustment mechanism is provided in plurality; It also includes: a background light calibration device; the background light calibration device includes a deflection mechanism, an attenuation plate and a calibration optical fiber; the deflection mechanism is installed on the stage, the attenuation plate is installed on the deflection end of the deflection mechanism, and is used to receive the incident light of the light source; one end of the calibration optical fiber is connected to the attenuation plate, and the other end is used to connect to the optical fiber spectrometer; It also includes: a camera module, which is used to obtain video information of the current detection environment of the stage; The light source comprises: a fan, a broadband light source and a focusing lens, which are packaged as one body, the focusing lens is located at the light emitting side of the broadband light source, and the fan is located at the light emitting side away from the broadband light source.

2. The nondestructive optical detection device for aqueous samples according to claim 1, characterized in that: There are three arc-shaped fixing frames, and the three arc-shaped fixing frames are evenly distributed around the adapter plate; the central angle corresponding to the arc-shaped trajectory of the light source mounting seat moving on the arc-shaped fixing frame is 0°-80°, and the direction of the incident light emitted by the light source is along the radial direction of the arc-shaped fixing frame.

3. The nondestructive optical testing device for aqueous samples according to claim 1, characterized in that: The posture adjustment seat also includes a spherical support, which is installed on the storage seat and located on the inner side of the enclosure structure; The enclosure structure has a first side, a second side, a third side and a fourth side connected in sequence, and the spherical support is close to the corner position of the first side and the second side of the enclosure structure; There are two rolling adjustment mechanisms, wherein the friction axis of one rolling adjustment mechanism is arranged along the third side, and the friction axis of the other rolling adjustment mechanism is arranged along the fourth side.

4. The nondestructive optical testing device for aqueous samples according to claim 1, characterized in that: Also includes: Shell cover; The shell cover is arranged on the fixing platform, and the shell cover is respectively provided with an inlet and an outlet on the opposite side walls along the first direction, and the inlet and the outlet are both provided with a blackout curtain; The movable platform can reciprocate along the first direction. The movable platform is provided with a first station and a second station at intervals along the first direction. The first station and the second station are both provided with a posture adjustment seat. When the first station is located at the detection station, the second station is located at the outer side of the shell cover.

5. The nondestructive optical testing device for water-containing samples according to any one of claims 1 to 4, characterized in that: The spectrum detection device includes a three-axis translation stage, a detection optical fiber and a fiber optic spectrometer; One end of the detection optical fiber is connected to the three-axis translation stage and is used to extend toward the sample to be tested, and the other end of the detection optical fiber is connected to the optical fiber spectrometer.

Images