Spectrum acquisition device and system

Abstract

The utility model relates to the field of spectrograph equipment, in particular to a spectrum acquisition device and a spectrum acquisition system. The spectrum acquisition device comprises a detection box and a spectrum receiving unit, a first through hole is formed in the detection box, a to-be-detected material is placed right above the first through hole, and the spectrum receiving unit is arranged in the detection box. Detection light enters from the upper portion of the to-be-detected material, sequentially passes through the to-be-detected material and the first through hole in the incidence direction and then enters the spectrum receiving unit, and therefore the spectrum receiving unit can collect light signals related to the to-be-detected material. The spectrum acquisition device further comprises a shading part, the shading part is connected with the detection box and used for shading stray light entering the to-be-detected material and the first through hole, so that the stray light is prevented from entering the spectrum receiving unit, the influence of the stray light on the detection result is avoided, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of spectrometer equipment, and in particular to a spectrum acquisition device and system. Background Art

[0002] Nowadays, people have increasingly high expectations for the quality of fruits, demanding not only good appearance but also high internal quality. Sugar content is an important indicator of the internal quality of fruits. Currently, the research on near-infrared spectroscopy technology for non-destructive detection of fruit sugar content, acidity and other internal qualities has been a hot topic for scholars at home and abroad in recent years.

[0003] The inventors discovered that existing spectral receivers can only simply collect the spectrum and focus the optical signal onto an optical fiber through a lens. Furthermore, the optical signal collected by the spectral receivers through this process is easily affected by stray light in the environment, resulting in inaccurate detection results. Utility Model Content

[0004] The purpose of the present invention is to provide a spectrum acquisition device and system, which can block stray light incident toward the first through hole, prevent the stray light from entering the spectrum receiving unit, thereby avoiding the stray light from affecting the detection results, and thus improving the accuracy of the detection.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the present invention provides a spectrum acquisition device, comprising:

[0007] A detection box, wherein a first through hole is provided on the top of the detection box;

[0008] The spectrum receiving unit is provided in the detection box; along the incident direction of the detection light, the detection light passes through the material to be inspected and the first through hole in sequence and is received by the spectrum receiving unit;

[0009] A light shielding member is connected to the detection box; the light shielding member is used to shield stray light.

[0010] In an optional embodiment, the shading member is arranged at an angle to the upper surface of the detection box.

[0011] In an optional embodiment, the shading member includes at least one shading plate, and the shading plate is detachably provided on the detection box.

[0012] In an optional embodiment, two light shielding plates are provided, and the two light shielding plates are arranged opposite to each other; the two light shielding plates are both located at the periphery of the first through hole.

[0013] In an optional embodiment, the upper surface of the detection box is covered with a light absorbing layer; the light absorbing layer is located between the two light shielding plates; the light absorbing layer is used to absorb stray light.

[0014] In an optional embodiment, the spectrum acquisition device further includes a movable member; the movable member is located in the detection box, and the movable member is movably connected to the detection box;

[0015] The detection box is provided with a clearance hole, and the movable part is connected to the light-shielding part and is used to drive the light-shielding part to movably cooperate with the clearance hole.

[0016] In an optional embodiment, the spectrum acquisition device also includes a first connecting member; the detection box is provided with a first elongated hole; the movable member is provided with a first mounting hole; the first connecting member is fixedly matched with the first mounting hole, and the first connecting member is slidingly matched with the first elongated hole.

[0017] In an optional embodiment, the spectrum acquisition device further includes two fixing plates, which are located on opposite sides of the detection box, and both fixing plates are movably connected to the detection box.

[0018] In an optional embodiment, the spectrum acquisition device also includes a second connecting member; the detection box is provided with a second mounting hole; the fixing plate is provided with a second elongated hole; the second connecting member is fixedly matched with the second mounting hole, and the second connecting member is slidingly matched with the second elongated hole.

[0019] In a second aspect, the utility model provides a spectrum collection system, which includes a transport track and the aforementioned spectrum collection device; the transport track is movably coordinated with the detection box; the transport track is provided with a plurality of second through holes, the second through holes being used to allow the detection light to pass through;

[0020] The conveying direction of the transport track is parallel to the length direction of the shading element.

[0021] The beneficial effects of the embodiments of the present utility model include:

[0022] The spectrum acquisition device includes a detection box and a spectrum receiving unit. The detection box has a first through-hole, and the material to be tested is placed directly above the first through-hole. The spectrum receiving unit is disposed within the detection box. Detection light is incident from above the material to be tested, passes through the material to be tested and the first through-hole in sequence along the incident direction, and then enters the spectrum receiving unit, thereby enabling the spectrum receiving unit to collect optical signals related to the material to be tested. The spectrum acquisition device also includes a light shielding member connected to the detection box for shielding stray light directed toward the material to be tested and the first through-hole, thereby preventing stray light from entering the spectrum receiving unit, thereby preventing stray light from affecting the detection results and thereby improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of a spectrum acquisition system provided by an embodiment of the utility model;

[0025] Figure 2 A schematic cross-sectional view of a spectrum acquisition device provided by an embodiment of the present utility model;

[0026] Figure 3 A schematic cross-sectional view of a spectrum acquisition device and a material to be inspected provided in an embodiment of the present utility model;

[0027] Figure 4 A schematic diagram of the structure of the spectrum acquisition device provided by an embodiment of the present utility model at a first viewing angle;

[0028] Figure 5 A schematic diagram of the structure of the spectrum acquisition device and the material to be inspected provided in an embodiment of the utility model;

[0029] Figure 6 This is a structural schematic diagram of the spectrum acquisition device provided by an embodiment of the utility model at a second viewing angle.

[0030] Icons: 100-spectral acquisition device; 110-detection box; 111-through hole; 112-mounting slot; 113-clearance hole; 114-first long hole; 115-second mounting hole; 120-spectral receiving unit; 121-optical fiber; 130-light shielding member; 131-light shielding plate; 140-light-absorbing layer; 150-movable member; 151-first mounting hole; 160-fixed plate; 161-second long hole; 200-material to be inspected; 300-transport track; 400-spectral acquisition system. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] Please refer to Figures 1-6 , Figure 1 A schematic structural diagram of a spectrum acquisition system 400 provided in an embodiment of the present utility model; Figure 2 A cross-sectional schematic diagram of a spectrum acquisition device 100 provided in an embodiment of the present utility model; Figure 3 A schematic cross-sectional view of a spectrum acquisition device 100 and a material to be inspected 200 provided in an embodiment of the present invention; Figure 4A schematic structural diagram of a spectrum acquisition device 100 provided by an embodiment of the present utility model at a first viewing angle; Figure 5 A schematic structural diagram of a spectrum acquisition device 100 and a material to be inspected 200 provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the spectrum acquisition device 100 provided by an embodiment of the present invention at a second viewing angle. Direction A in the figure is the incident direction of the detection light. Direction B in the figure is the incident direction of the stray light.

[0038] The present invention provides a spectrum acquisition system 400, which includes a transport track 300 and a spectrum acquisition device 100. The spectrum acquisition device 100 includes a detection box 110, a spectrum receiving unit 120, and a light shielding member 130. The transport track 300 is disposed on the top of the detection box 110 and is used to transport the material to be inspected 200. The transport track 300 is movably coordinated with the detection box 110. A first through hole 111 is formed on the top of the detection box 110, and the spectrum receiving unit 120 is disposed within the detection box 110. Detection light is incident from above the material to be inspected 200. Following the incident direction of the detection light, the detection light passes through the material to be inspected 200 and the first through hole 111 in sequence before being received by the spectrum receiving unit 120. This enables the spectrum receiving unit 120 to collect optical signals related to the material to be inspected 200 and transmit them to a spectrum analyzer.

[0039] Specifically, in this embodiment, the spectrum receiving unit 120 is aligned with the first through hole 111, so that the detection light is incident from directly above, passes through the material 200 to be inspected and the first through hole 111, and then enters the spectrum receiving unit 120. The spectrum receiving unit 120 includes a convex lens and an optical fiber 121. The convex lens converges multiple detection optical fibers 121 onto the optical fiber 121, and then transmits the optical signal through the optical fiber 121 to the spectrum analyzer for analysis.

[0040] It should be noted that this embodiment adopts the near-infrared spectroscopy method. It can be understood that the detection light can obtain the corresponding light signal by penetrating the material to be tested, and transmit it to the spectrum analyzer through the optical fiber 121 to analyze the light signal.

[0041] In this embodiment, the transport track 300 is provided with a plurality of second through holes 111, and a material to be inspected 200 is provided directly above each second through hole 111. When a second through hole 111 moves to directly above the first through hole 111, the detection light is emitted from directly above the material to be inspected 200, and after passing through the material to be inspected 200, the second through hole 111 and the first through hole 111 in sequence, enters the spectral acquisition unit.

[0042] The spectrum collection device 100 further includes a light shielding member 130 connected to the detection box 110 for shielding stray light. It should be noted that stray light is ambient light other than the detection light, such as indoor lighting and outdoor sunlight.

[0043] The spectrum acquisition device 100 is provided with a light shielding member 130 to shield the stray light entering the first through hole 111 , thereby preventing the stray light from entering the spectrum receiving unit 120 , thereby preventing the stray light from affecting the detection result, and thereby improving the detection accuracy.

[0044] It should be noted that in this embodiment, the material 200 to be inspected in the spectrum acquisition device 100 is fruit, and the light collected is light for fruit detection. The spectrum acquisition device 100 collects and transmits optical signals conveying information related to the fruit's internal structure to a spectrum analyzer for analysis of the fruit's sweetness and acidity, thereby identifying the fruit's intrinsic quality and facilitating subsequent fruit screening. The spectrum acquisition device 100 utilizes a light shield 130 to block stray light, preventing it from affecting the test results, thereby improving the accuracy of both detection and subsequent fruit screening.

[0045] For further information, please refer to Figures 1-6 In this embodiment, the shading member 130 is arranged at an angle to the upper surface of the detection box 110, so that in the vertical direction, the shading member 130 can block at least part of the material to be tested, thereby improving the shading effect of the shading member 130 on stray light, preventing stray light from entering the spectrum acquisition unit, and improving the detection accuracy.

[0046] Furthermore, the light shielding member 130 includes at least one light shielding plate 131, and the light shielding plate 131 is detachably provided on the detection box 110. Thus, the light shielding plate 131 can be quickly installed to quickly adjust the number of the light shielding plates 131.

[0047] In this embodiment, two light shielding plates 131 are provided, and the two light shielding plates 131 are arranged opposite to each other; both of the two light shielding plates 131 are located at the outer periphery of the first through hole 111 .

[0048] It is understood that the fruit transported by the transport track 300 is located between the two light shielding plates 131. In this embodiment, the multiple fruits on the transport track 300 are arranged in sequence along the transport direction and pass through the second through-holes 111, so that stray light from two opposite sides in the transport direction is blocked by other fruits, thereby improving detection accuracy.

[0049] The transport direction of the transport track 300 is parallel to the length direction of the light shielding member 130. It is understood that two light shielding members 130 are provided on both sides of the plurality of fruits to block stray light from two sides perpendicular to the transport direction. Thus, the spectrum acquisition device 100 can block stray light from all sides, thereby improving detection accuracy.

[0050] It should be noted that, in other embodiments, if stray light is incident from one direction, only one light shielding plate 131 may be provided to shield the stray light incident from the direction. The number of light shielding plates 131 may be adjusted according to actual conditions.

[0051] According to the above structure settings, please refer to Figures 1-6 In this embodiment, the upper surface of the detection box 110 is covered with a light absorbing layer 140 ; ​​the light absorbing layer 140 is located between the two light shielding members 130 ; the light absorbing layer 140 is used to absorb stray light.

[0052] Specifically, when incident stray light is blocked by the light shielding member 130, some of the stray light will be reflected and refracted into the upper surface of the detection box 110. To reduce the diffuse reflection of stray light on the upper surface of the detection box 110 and the portion of stray light not blocked by the light shielding member 130, the upper surface of the detection box 110 of the spectrum collection device 100 is further covered with a light absorbing layer 140 to absorb the stray light, thereby preventing the stray light from entering the spectrum collection unit and affecting the detection results, thereby improving the accuracy of the detection.

[0053] It should be noted that, in this embodiment, the light absorbing layer 140 is made of matte velvet, that is, a layer of matte velvet is laid on the upper surface of the detection box 110 to absorb reflected and refracted stray light.

[0054] Furthermore, in this embodiment, the spectrum collection system 400 further includes a fruit cup (not shown), the fruit cup is provided with a third through hole 111 , and the material to be inspected 200 is carried directly above the third through hole 111 .

[0055] Specifically, multiple fruit cups are provided. When transporting fruit, each piece of fruit is placed in a corresponding fruit cup to prevent collisions and damage during transport. Each third through-hole 111 is aligned with a second through-hole 111. As can be appreciated, in this embodiment, the detection light is incident directly above the fruit, passes through the fruit and the fruit cup it is aligned with, and then passes through the second through-hole 111 and the first through-hole 111 before entering the spectrum receiving unit 120.

[0056] It should be noted that to improve the accuracy of fruit detection, the light shielding members 130 must be placed on both sides of the fruit. However, the width of the fruit cup is greater than the distance between the two light shielding members 130. Therefore, the movement of the fruit cup will be affected by the light shielding members 130. Therefore, the light shielding members 130 must be made of a flexible material to facilitate the movement of the fruit cup. In this embodiment, the light shielding members 130 are constructed of a brush structure.

[0057] In this embodiment, the brush is positioned at an angle to the upper surface of the detection box 110, i.e., the brush is tilted. This reduces the contact area between the brush and the fruit cup, thereby reducing the resistance of the brush to the fruit cup and allowing the fruit cup to move smoothly. Furthermore, in this embodiment, the brush is black to enhance its ability to block stray light, thereby improving detection accuracy.

[0058] In other embodiments, the light shielding member 130 may also adopt other flexible structures to allow the fruit cup to pass through while blocking stray light. In addition, the color of the brush may be adjusted according to actual conditions.

[0059] For further information, please refer to Figures 1-6 Spectrum collection device 100 further includes a movable member 150 located within detection box 110 and movably connected thereto. Detection box 110 is provided with a clearance hole 113. Movable member 150 is connected to light shielding member 130, driving light shielding member 130 to engage with clearance hole 113. Specifically, spectrum collection device 100 utilizes movable member 150 to adjust the height of light shielding member 130, thereby enhancing the effectiveness of light shielding against stray light and improving detection accuracy.

[0060] According to the above-described structural arrangement, the spectrum collection device 100 further includes a first connecting member (not shown); the detection box 110 is provided with a first elongated hole 114; and the movable member 150 is provided with a first mounting hole 151. The first connecting member is fixedly engaged with the first mounting hole 151, and the first connecting member is slidably engaged with the first elongated hole 114. Specifically, the spectrum collection device 100, by providing the first elongated hole 114, allows the movable member 150 to move a certain distance, thereby adjusting the height of the light shielding member 130. This structure is simple and easy to operate.

[0061] It should be noted that in this embodiment, two light shielding members 130 are provided. One light shielding member 130 is connected to the movable member 150, and the other light shielding member 130 is disposed within the mounting slot 112 on the side of the detection box 110. Specifically, one light shielding member 130 is height-adjustable, while the other light shielding member 130 is fixedly connected. Furthermore, in this embodiment, the light shielding member 130 connected to the movable member 150 is disposed between the edge of the upper surface of the detection box 110 and the edge of the first through hole 111, while the other light shielding member 130 is disposed on the side of the detection box 110. Therefore, it is understandable that the distances between the two light shielding members 130 and the edge of the first through hole 111 are not the same. In other embodiments, the position and connection relationship of the light shielding members 130 can be adjusted according to actual circumstances.

[0062] For further information, please refer to Figures 1-6 In this embodiment, the spectrum acquisition device 100 further includes two fixing plates 160 . The two fixing plates 160 are located on opposite sides of the detection box 110 , and both fixing plates 160 are movably connected to the detection box 110 .

[0063] Specifically, the spectrum acquisition device 100 is provided with two fixing plates 160 to securely support the detection box 110. Furthermore, the detection box 110 and the fixing plates 160 are movably connected, thereby adjusting the height of the detection box 110. In this embodiment, by moving the detection box 110 relative to the fixing plates 160, the light shielding member 130 is moved to adjust the height of the light shielding member 130. This improves the light shielding member 130's ability to block stray light, thereby enhancing detection accuracy.

[0064] Based on the above, the spectrum collection device 100 further includes a second connecting member (not shown); the detection box 110 is provided with a second mounting hole 115; and the fixing plate 160 is provided with a second elongated hole 161. The second connecting member is fixedly engaged with the second mounting hole 115 and slidably engaged with the second elongated hole 161. Specifically, the spectrum collection device 100, by providing the second elongated hole 161, allows the detection box 110 to move a certain distance, thereby adjusting the height of the detection box 110 and the light shielding member 130. This structure is simple and easy to operate.

[0065] In summary, the spectrum collection system 400 includes multiple fruit cups, a transport track 300, and a spectrum collection device 100. The spectrum collection device 100 includes a detection box 110 and a spectrum receiving unit 120. The detection box 110 defines a first through-hole 111, and the transport track 300 defines multiple second through-holes 111. The fruit cups define third through-holes 111, which are positioned directly above the third through-holes 111 for holding fruit. Each fruit cup's third through-hole 111 is aligned with a second through-hole 111.

[0066] The transport track 300 drives the fruit cup and the fruit to move along the transport direction. When the third through hole 111 and the second through hole 111 are opposite to the first through hole 111, the detection light is emitted from directly above the fruit, passes through the fruit, the third through hole 111, the second through hole 111 and the first through hole 111 in sequence, enters the spectrum collection unit, and is collected and transported to the spectrum analyzer by the spectrum collection unit to analyze the collected optical signals related to the material to be inspected 200.

[0067] The spectrum acquisition device 100 further includes a shading member 130 , which is connected to the detection box 110 and is used to block stray light, thereby preventing stray light from entering the spectrum receiving unit 120 , thereby preventing stray light from affecting the detection results and thereby improving the accuracy of the detection.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A spectrum acquisition device, characterized in that: include: A detection box, wherein a first through hole is provided on the top of the detection box; A spectrum receiving unit, the spectrum receiving unit is arranged in the detection box; Along the incident direction of the detection light, the detection light passes through the material to be inspected and the first through hole in sequence and is then received by the spectrum receiving unit; A light shielding member is connected to the detection box; the light shielding member is used to shield stray light.

2. The spectrum acquisition device according to claim 1, characterized in that: The light shielding member is arranged at an angle to the upper surface of the detection box.

3. The spectrum acquisition device according to claim 1, wherein: The light shielding member includes at least one light shielding plate, and the light shielding plate is detachably arranged on the detection box.

4. The spectrum acquisition device according to claim 3, characterized in that: There are two light shielding plates, which are arranged opposite to each other; and both light shielding plates are located at the periphery of the first through hole.

5. The spectrum acquisition device according to claim 4, characterized in that: The upper surface of the detection box is covered with a light absorbing layer; the light absorbing layer is located between the two light shielding plates; the light absorbing layer is used to absorb the stray light.

6. The spectrum acquisition device according to any one of claims 1 to 5, characterized in that: The spectrum acquisition device further includes a movable part; the movable part is located in the detection box, and the movable part is movably connected to the detection box; The detection box is provided with a clearance hole, and the movable member is connected to the light-shielding member to drive the light-shielding member to movably cooperate with the clearance hole.

7. The spectrum acquisition device according to claim 6, characterized in that: The spectrum acquisition device also includes a first connecting member; the detection box is provided with a first elongated hole; the movable member is provided with a first mounting hole; the first connecting member is fixedly matched with the first mounting hole, and the first connecting member is slidably matched with the first elongated hole.

8. The spectrum acquisition device according to any one of claims 1 to 4, characterized in that: The spectrum collection device further includes two fixing plates, which are located on opposite sides of the detection box and are both movably connected to the detection box.

9. The spectrum acquisition device according to claim 8, characterized in that: The spectrum acquisition device also includes a second connecting member; the detection box is provided with a second mounting hole; the fixing plate is provided with a second elongated hole; the second connecting member is fixedly matched with the second mounting hole, and the second connecting member is slidingly matched with the second elongated hole.

10. A spectrum acquisition system, characterized in that: The spectrum acquisition system comprises a transport track and the spectrum acquisition device according to any one of claims 1 to 9; the transport track is movably engaged with the detection box; the transport track is provided with a plurality of second through holes, the second through holes being used to allow the detection light to pass through; Wherein, the conveying direction of the transport track is parallel to the length direction of the shading element.

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