A grain appearance detection device

Abstract

The embodiment of the present invention discloses a grain appearance detection device, comprising: a frame; a material spreading and collecting mechanism located on the frame, the material spreading and collecting mechanism being configured to spread materials to facilitate the acquisition of material appearance images and to collect materials after image acquisition is completed; an image acquisition mechanism, the image acquisition mechanism being configured to acquire appearance images of materials spread on the material spreading and collecting mechanism; a feeding mechanism, the feeding mechanism being configured to transport materials to the material spreading and collecting mechanism; the image acquisition mechanism comprising two image acquisition components symmetrically arranged on the upper and lower sides of the material spreading and collecting mechanism, namely a first image acquisition component and a second image acquisition component; the feeding mechanism being located at the top of the device, the feeding mechanism comprising a material channel for transporting materials to the material collecting mechanism. The device is small in size, light in weight, simple in operation, efficient in detection, and has broad application prospects.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and more specifically, to a grain appearance detection device. Background Art

[0002] With the continuous improvement of people's living standards, higher requirements are put forward for the appearance quality of grains. The appearance quality of grains is an important content to measure the quality of grains and an important reason affecting the quality of grains. At present, the main methods of grain appearance quality detection are manual detection and instrument detection. Manual detection is to judge the appearance quality of grains by sensory observation. This method mainly relies on the subjective experience of the staff, and the judgment accuracy is not high and the consistency is poor. In addition, when working for a long time, the staff is prone to fatigue and omissions; instrument detection includes single-sided image detectors and double-sided image detectors. The single-sided image detector mainly collects single-sided images of grains, and the information collection is incomplete, and it is easy to miss information; the double-sided image detector mainly collects double-sided images of grains, which can fully collect information, but there are disadvantages such as large instrument size, heavy weight and manual feeding. Therefore, how to provide a grain appearance quality detection instrument with small size, light weight, simple operation and efficient detection is a technical problem that technicians in this field need to solve. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a grain appearance detection device which has small size, light weight, simple operation and high detection efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A grain appearance detection device, comprising:

[0006] Frame;

[0007] A material spreading and collecting mechanism located on the frame, the material spreading and collecting mechanism being configured to spread the material to facilitate the acquisition of the material appearance image and to collect the material after the image acquisition is completed;

[0008] An image acquisition mechanism, the image acquisition mechanism being configured to acquire an appearance image of the material spread on the material spreading and collecting mechanism;

[0009] A feeding mechanism, wherein the feeding mechanism is configured to convey materials to a material spreading and collecting mechanism;

[0010] The image acquisition mechanism includes two image acquisition components symmetrically arranged on the upper and lower sides of the material paving and collecting mechanism, which are respectively a first image acquisition component and a second image acquisition component;

[0011] The feeding mechanism is located at the top of the device, and the feeding mechanism includes a material channel for conveying materials to the material spreading and collecting mechanism.

[0012] In addition, a preferred solution is that the feeding mechanism comprises:

[0013] Mounting bracket;

[0014] A housing mounted on top of the image acquisition mechanism via a mounting bracket;

[0015] a loading plate located in the housing and rotatable relative to the housing; and

[0016] A hopper located at the top of the shell, wherein the outlet of the hopper is connected to the interior of the shell;

[0017] A discharge port is provided at the bottom of the shell, and the discharge port is connected to the material channel.

[0018] In addition, a preferred solution is that the material loading and unloading plate comprises a main body portion and a material unloading portion formed by the edge of the main body portion extending along the radial direction of the material loading and unloading plate;

[0019] The material shifting portion is configured to shift the material entering the shell from the hopper outlet to the discharge port as the loading shifting plate rotates, so that the material falls into the material channel and is transported to the material spreading and collecting mechanism through the material channel.

[0020] In addition, a preferred solution is that the image acquisition component includes:

[0021] Mounting plate;

[0022] A reflector lamp disposed on the mounting plate; and

[0023] A photographing device fixed to a side of the reflector lamp away from the mounting plate;

[0024] The mounting plate is provided with a light-through hole corresponding to the reflector lamp.

[0025] In addition, it is preferred that the reflector lamp comprises:

[0026] A lampshade disposed on a side of the mounting plate away from the material spreading and collecting mechanism; and

[0027] A lamp body arranged around the light-through hole;

[0028] The lamp body is located inside the lampshade and is fixed to the mounting plate;

[0029] The lampshade comprises a lamp cover portion and a blocking portion formed by extending the edges of the lamp cover portion toward the mounting plate;

[0030] The inner surface of the enclosure portion is provided with a diffuse reflection layer;

[0031] A light absorbing layer is arranged on the inner surface of the lamp cover, and a light transmission hole corresponding to the shooting device is arranged at the center of the lamp cover.

[0032] In addition, a preferred solution is that the photographing device includes:

[0033] A camera body is arranged on a side of the lampshade away from the mounting plate through an adjustment mechanism;

[0034] a reflector mount located at the front end of the camera body; and

[0035] A reflector disposed on the reflector seat;

[0036] The port of the reflector seat corresponds to the light-transmitting hole.

[0037] In addition, it is preferred that the adjustment mechanism comprises:

[0038] Base;

[0039] A mounting member located on the base and rotatable in the X and Y planes; and

[0040] An adjustment block fixed on one end surface of the base;

[0041] An installation space for accommodating the camera body is formed between the base and the installation member;

[0042] The mounting member includes an adjusting bolt, and the camera body is suspended in the mounting space by the adjusting bolt; the adjusting bolt is configured to adjust the posture of the camera relative to the X and Y planes by adjusting the screwing amount;

[0043] The adjustment block includes a fixing portion fixedly combined with the base, and a matching portion corresponding to the mounting member, the matching portion includes an adjustment bolt penetrating the matching portion of the adjustment block, and the adjustment bolt is configured to adjust the rotation amount of the mounting member in the X and Y planes by adjusting the screw-in amount.

[0044] In addition, a preferred solution is that the material paving and collecting mechanism includes:

[0045] Base plate;

[0046] A first side plate and a second side plate extending along a first direction at two opposite sides of the bottom plate;

[0047] a shovel plate assembly located on the bottom plate and capable of reciprocating along a first direction; and

[0048] Drive components;

[0049] The shovel board assembly comprises a first shovel board assembly and a second shovel board assembly arranged along a first direction and mounted between a first side plate and a second side plate, and a space enclosed by the first shovel board assembly, the second shovel board assembly, the first side plate and the second side plate forms a material spreading area;

[0050] A collecting port for collecting materials is formed on the bottom plate, and the collecting port is located on a side of the second shovel plate assembly away from the first shovel plate assembly;

[0051] The first shovel blade assembly is fixedly combined with the driving assembly, and the first shovel blade assembly is configured to push the second shovel blade assembly to move along the first direction under the driving of the driving assembly;

[0052] The material spreading area includes a position that moves along the first direction to at least partially overlap with the collecting port.

[0053] In addition, a preferred solution is that the material spreading and collecting mechanism further includes a glass plate plugged into the bottom plate;

[0054] The space enclosed by the glass plate, the first shovel plate assembly, the second shovel plate assembly, the first side plate and the second side plate forms a material spreading area;

[0055] The glass plate is configured to facilitate the image acquisition mechanism to acquire an image of the lower surface of the material.

[0056] The beneficial effects of this application are as follows:

[0057] In view of the technical problems existing in the prior art, an embodiment of the present application provides a grain appearance detection device, which includes three components: a material spreading and collecting mechanism, an image acquisition mechanism, and a feeding mechanism. Through the mutual cooperation of the above three components, the device can realize automatic feeding, multiple sampling, automatic detection, and automatic collection of materials, which can greatly reduce the work intensity, improve work efficiency, and facilitate real-time on-site detection of samples; and the device is small in size, light in weight, simple to operate, and efficient in detection, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0059] Figure 1 The figure shows the overall structure of the grain appearance detection device provided by the embodiment of the present invention.

[0060] Figure 2 A schematic structural diagram of a feeding mechanism provided in an embodiment of the present invention is shown.

[0061] Figure 3 A schematic diagram of the bottom structure of the feeding mechanism provided in an embodiment of the present invention is shown.

[0062] Figure 4 A schematic diagram showing the structure of an image acquisition mechanism provided by an embodiment of the present invention is shown.

[0063] Figure 5 A schematic structural diagram of a mounting plate provided in an embodiment of the present invention is shown.

[0064] Figure 6 A schematic structural diagram of a reflector lamp provided in an embodiment of the present invention is shown.

[0065] Figure 7 A schematic diagram showing the structure of a photographing device provided by an embodiment of the present invention is shown.

[0066] Figure 8 A schematic structural diagram of a material spreading and collecting mechanism provided in an embodiment of the present invention is shown.

[0067] Fig. 9 A schematic structural diagram of a first shovel blade assembly provided in an embodiment of the present invention is shown.

[0068] Fig.10 A schematic structural diagram of a second shovel blade assembly provided in an embodiment of the present invention is shown.

[0069] Fig.11 A schematic structural diagram of a driving assembly provided in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0070] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0071] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0072] It should also be noted that, in the description of the present application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0073] In order to overcome the defects of the prior art, the embodiment of the present invention provides a grain appearance detection device, combined with Figure 1 As shown, the device includes a frame 1, a material spreading and collecting mechanism 2, an image acquisition mechanism 3, a feeding mechanism 4 and a control system 100. The material spreading and collecting mechanism 2 is arranged on the frame 1, and is mainly used for spreading materials to facilitate the collection of the appearance image of the materials and collecting the materials after the image collection is completed; the image acquisition mechanism 3 is fixed on the frame 1, located at the center of the grain appearance detection device, and is used to collect the appearance image of the materials spread on the material spreading and collecting mechanism 2. Specifically, the image acquisition mechanism 3 includes two image acquisition components symmetrically arranged on the upper and lower sides of the material spreading and collecting mechanism 2, which are the first image acquisition component 31 and the second image acquisition component 32 respectively; the feeding mechanism 4 is installed on the image acquisition mechanism 3, and is located at the top of the entire grain appearance detection device. The feeding mechanism 4 includes a material channel 41, and the feeding mechanism 4 is mainly used to transport the materials through the material channel 41 to the material spreading area 200 of the material spreading and collecting mechanism 2.

[0074] In a specific embodiment, in combination Figure 2 as well as Figure 3As shown, the feeding mechanism 4 includes a mounting bracket 42 and a feeding assembly mounted on the top of the image acquisition mechanism 3 through the mounting bracket 42. The feeding assembly includes a shell 43, a feeding plate 44, a hopper 45 and a material channel 41. Specifically, the shell 43 is fixed on the mounting bracket 42, the hopper 45 is mounted on the top of the shell 43, and the outlet of the hopper 45 is connected to the inside of the shell 43. A discharge port (not shown) is provided at the bottom of the shell 43, and the discharge port is connected to the material channel 41. The material channel 41 consists of a discharge channel 411 and a channel cover plate 412. The inner surface of the discharge channel 411 has a certain slope, which can ensure that the material falls at an initial velocity in a certain direction, and then ensures that it falls into the designated area.

[0075] In this embodiment, the feeding paddle 44 is disposed inside the housing 43 and is rotatable relative to the housing 43. Specifically, the center of the feeding paddle 44 is eccentrically mounted to the outlet of the hopper 45. The feeding paddle 44 is configured to rotate to paddle the material added into the housing 43 from the hopper 45 to the outlet, so that the material enters the material channel 41.

[0076] In a specific embodiment, the loading dial plate 44 includes a main body and a material shifting portion 440 formed by the edge of the main body extending radially along the loading dial plate 44. The material shifting portion 440 is specifically manifested as wave teeth evenly distributed on the edge of the main body. The material shifting portion 440 can shift the material entering the shell 43 from the outlet of the hopper 45 to the discharge port as the loading dial plate 44 rotates, so that the material falls into the material channel 41 and is transported to the material spreading and collecting mechanism 2 by the material channel.

[0077] In a specific embodiment, the loading paddle 44 is driven by a motor 46 to rotate relative to the housing 43. The motor 46 is fixed to the mounting bracket 42 and is located on the side of the housing 43. The loading paddle 44 is installed in the housing 43 via a rotating shaft. A driving wheel 47 is installed on the output shaft of the motor 46. A driven wheel 48 is installed on the rotating shaft of the loading paddle 44. The driving wheel 47 and the driven wheel 48 are connected by a transmission belt 49. The transmission belt 49 includes but is not limited to a belt or a synchronous belt. It should be noted that the above embodiment is only a feasible method for providing drive for the loading paddle 44 given by the present invention. Other mechanisms that can drive the loading paddle 44 to rotate relative to the housing 43 are all within the protection scope of the present invention.

[0078] When the feeding mechanism 4 is working, the material is put into the hopper 45, and the material passes through the outlet of the hopper 45 and falls onto the feeding paddle 44, and then falls into the shell 43; the motor 46 drives the driven wheel 48 to rotate through the transmission belt 49, and then drives the feeding paddle 44 to rotate in the shell 43, and the paddle part 440 on the feeding paddle 44 stirs the material to move, so that the material moves to the discharge port, and then enters the next step of detection through the material channel 41. The slope of the unloading channel 411 in the material channel 41 ensures that the material falls with an initial velocity in a certain direction, and then ensures that it falls into the designated area.

[0079] In a specific embodiment, in combination Figure 4 As shown, the image acquisition component includes a mounting plate, a reflector lamp and a shooting device. Specifically, the first image acquisition component 31 includes a first mounting plate 301, a first reflector lamp 501 fixed on a side of the first mounting plate 301 away from the second image acquisition component 32, and a first shooting device 601 fixed on a side of the first reflector lamp 501 away from the first mounting plate 301; the second image acquisition component 32 includes a second mounting plate 302, a second reflector lamp 502 fixed on a side of the second mounting plate 302 away from the first image acquisition component 31, and a second shooting device 602 fixed on a side of the second reflector lamp 502 away from the second mounting plate 302; the first mounting plate 301 and the second mounting plate 302 are symmetrically arranged on the upper and lower sides of the material paving and collecting mechanism 2, and are installed and fixed by a mounting bracket 303.

[0080] In a specific embodiment, in combination Figure 5 As shown, the first mounting plate 301 is provided with a light hole 300 corresponding to the first reflector lamp 501, and similarly, the second mounting plate 302 is also provided with a light hole 300 corresponding to the second reflector lamp 502. In this embodiment, the first reflector lamp 501 and the second reflector lamp 502 are installed opposite to each other.

[0081] In a specific embodiment, in combination Figure 6 As shown, the reflector lamp includes a lampshade 51 and a lamp body 52, and the first reflector lamp 501 and the second reflector lamp 502 are symmetrical about the central plane between the first mounting plate 301 and the second mounting plate 302. Specifically, the specific structure of the reflector lamp is described by taking the first reflector lamp 501 as an example, the lampshade 51 is arranged on a side of the first mounting plate 301 away from the material paving and collecting mechanism 2, and the bottom port of the lampshade 51 is installed concentrically with the light-through hole 300 on the first mounting plate 301; the lamp body 52 is arranged around the light-through hole 300, and specifically, the lamp body 52 is fixed on a side surface of the mounting plate close to the lampshade 51, and is located inside the lampshade 51.

[0082] In this embodiment, the lampshade 51 includes a lamp cover portion 511 and a blocking portion 512 formed by extending from the four edges of the lamp cover portion 511 toward the mounting plate, and the inner surface of the blocking portion 512 is treated with diffuse reflection to form a diffuse reflection layer; the inner surface of the lamp cover portion 511 is covered with a light absorbing layer, and a light-transmitting hole 530 corresponding to the shooting device is arranged at the center of the lamp cover portion 511.

[0083] In a specific embodiment, the lamp body 52 is an LED lamp, and the lamp body of the second reflector lamp 502 can be used as a downward reflective light source and also as a waist-exploding lamp. Figure 5 As shown, the light hole 300 is rectangular in shape, and the lamp bodies arranged on the second mounting plate 302 are divided into four groups, and the lamp bodies arranged along the same side of the light hole 300 are one group. When the four groups of lamp bodies are lit at the same time, the second shooting device 602 shoots the image of the bottom of the material; when the four groups of lamp bodies are lit in sequence, the first shooting device 601 shoots the image of the waist of the material in sequence.

[0084] In this embodiment, when the image acquisition mechanism 3 is working, the light of the first reflector lamp 501 is reflected by the enclosure 512, irradiated onto the material through the light hole 300 on the first mounting plate 301, and then reflected by the material, the light enters the first shooting device 601 through the light hole 530 of the first reflector lamp 501; the light of the second reflector lamp 502 is reflected by the enclosure 512, irradiated onto the material through the light hole 300 of the second mounting plate 302, and then reflected by the material, the light enters the second shooting device 602 through the light hole 530 of the second reflector lamp 502; the first shooting device 601 shoots the upper surface image of the material, and the second shooting device 602 shoots the lower surface image of the material.

[0085] In a specific embodiment, in combination Figure 7 As shown, the shooting device includes a camera body 61 arranged on a side of the lamp cover 53 away from the mounting plate through an adjustment mechanism, a reflector seat 62 located at the front end of the camera body 61, and a reflector 63 arranged on the reflector seat 62, wherein the reflector 63 is a 45° reflector, and the port of the reflector seat 62 is directly opposite to the light-transmitting hole 530 of the lamp cover 53 in the reflector lamp; the shooting device realizes the change of light direction through the 45° reflector, and the light direction is changed from vertical to horizontal, which greatly reduces the overall height of the grain appearance detection device.

[0086] In a specific embodiment, the adjustment mechanism includes a base 71, a mounting member 72 and an adjustment block 73. The mounting member 72 is mounted on the upper end surface of the base 71 and can rotate relative to the base 71 in the X and Y planes. The adjustment block 73 is fixed to one side end surface of the base 71 by bolts. An installation space for accommodating the camera body 61 is enclosed between the base 71 and the mounting member 72. An adjustment hole 720 is provided on the mounting member 72. An adjustment bolt (not shown) corresponding to the adjustment hole is provided in the adjustment hole 720. The camera body 61 is suspended in the installation space by the adjustment bolt. The posture of the camera body 61 relative to the X and Y planes can be adjusted by adjusting the screwing amount of the adjustment bolt.

[0087] In this embodiment, the adjustment block 73 includes a fixing portion 731 fixedly coupled to the base 71 and a matching portion 732 corresponding to the mounting member 72. The fixing portion 731 is provided with a threaded hole 7310, and the adjustment block 73 is fixedly coupled to the base 71 by a bolt disposed in the threaded hole; the matching portion 732 is provided with an adjustment hole, and an adjustment bolt 74 is disposed in the adjustment hole, and the rotation amount of the mounting member 72 in the X and Y planes can be adjusted by adjusting the screwing amount of the adjustment bolt 74.

[0088] In a specific embodiment, the mounting member 72 includes a top wall portion 721 and two side wall portions 722 formed by extending downward from two opposite sides of the top wall portion 721. The bottoms of the two side wall portions 722 are bent outward and extended to form a first connection portion 723 and a second connection portion 724 for connecting with the base 71. The first connection portion 723 is provided with through holes 7230 on the upper and lower surfaces of the first connection portion 723. A fixed top screw 75 is provided in the through hole 7230. After the posture adjustment of the camera body 61 is completed, the fixed top screw 75 is tightened so that the end of the fixed top screw 75 close to the base 71 is abutted and fixed with the top surface of the base, thereby playing the role of fixing the mounting member 72.

[0089] In a specific embodiment, the second connection portion 724 is rotatably connected and fixed to the base 71 via a rotating shaft 76. Under the action of the adjusting bolt 74, the mounting member 72 rotates around the rotating shaft 76 in the X and Y planes. After the position is determined, the rotating shaft 76 and the fixing screw 75 are tightened to fix the mounting member 72.

[0090] In a specific embodiment, the top wall portion 721 and the two side wall portions 722 and the upper end surface of the base 71 enclose an installation space for installing the camera body 61. The adjustment hole 720 passes through the two side surfaces of the top wall portion 721. The adjustment bolt is arranged corresponding to the adjustment hole 720. The adjustment bolt passes through the two side surfaces of the top wall portion 721 through the adjustment hole 720. The camera body 61 is installed on the top wall portion 721 of the mounting member 72 by the adjustment bolt. The posture of the camera body 61 relative to the X and Y planes can be adjusted by adjusting the screwing amount of the adjustment bolt.

[0091] In a specific embodiment, the inner end of the adjusting bolt 74 corresponds to the side position of the first connecting portion 723. Figure 1 As shown in , the inner end of the adjusting bolt 74 corresponds to the front end surface of the first connecting portion 723, and the inner end of the adjusting bolt 74 is screwed and fixed to the front end surface of the first connecting portion 723. By adjusting the screwing amount of the adjusting bolt 74 into the mounting member 72, the position of the mounting member 72 relative to the adjusting block 73 can be adjusted, thereby realizing that the mounting member 72 drives the camera body 61 to rotate around the axis of the rotating shaft 76, and adjusting the rotation amount of the camera in the X and Y planes. It should be noted that when the adjusting bolt rotates, the adjusting bolt 74 does not generate displacement in the axial direction of the adjusting bolt 74 relative to the matching portion 732 of the adjusting block 73. Specifically, the adjusting bolt 74 includes a rod portion (not shown) corresponding to the matching portion 732 of the adjusting block 73 and a limiting structure (not shown) located on the side of the matching portion 732 close to the first connecting portion 723, so that when the adjusting bolt rotates, the adjusting bolt 74 does not generate displacement in the axial direction of the adjusting bolt 74 relative to the matching portion 732 of the adjusting block 73.

[0092] In other embodiments, the inner end of the adjusting bolt 74 and the front end surface of the first connecting portion 723 may also be abutted and fixed, and the position of the mounting member 72 relative to the adjusting block 73 may be adjusted by adjusting the screwing amount of the adjusting bolt 74 relative to the adjusting block, thereby realizing that the mounting member 72 drives the camera body 61 to rotate around the axis of the rotating shaft 76, and adjusting the rotation amount of the camera in the X and Y planes. Correspondingly, a reset member for resetting the mounting member after rotation should be provided between the mounting member and the adjusting block, and the reset member may be a spring with an elastic reset function, and the present invention does not limit this.

[0093] In a specific embodiment, the through hole 7230 is a long hole structure. Specifically, two fixed top screws 75 are arranged in the through hole 7230 of the long hole structure along the extension direction of the through hole. After the posture adjustment of the camera is completed, the fixed top screw 75 is tightened so that the end of the fixed top screw 75 close to the base 71 is abutted and fixed with the top surface of the base 71 to achieve the fixation of the camera body 61. The design of the two fixed top screws can reduce the situation where the position of the mounting member and the base is accidentally offset after being fixed, so that the mounting member and the camera fixed on the mounting member can be stably maintained in the adjusted position.

[0094] In a specific embodiment, an adjustment gap is included between the adjustment block 73 and the first connection portion 723. When the posture of the camera needs to be adjusted, the size of the gap between the adjustment block 73 and the first connection portion 723 is adjusted by adjusting the screwing amount of the adjustment bolt 74. Accordingly, the mounting member 72 drives the camera body 61 to rotate around the rotating shaft 76, thereby realizing the adjustment of the rotation amount of the camera body 61 driven by the mounting member 72 in the X, Y plane.

[0095] In a specific embodiment, four adjustment holes 720 are opened on the top wall portion 721, and the four adjustment holes 720 are arranged in a rectangular shape on the top wall portion 721 of the mounting member 72. An adjustment bolt is provided in each of the adjustment holes 720, and the four adjustment bolts cooperate with each other to achieve posture adjustment of the camera relative to the X and Y planes.

[0096] In a specific embodiment, a top screw hole 7210 is formed on the top wall portion 721 of the mounting member 72, and the top screw hole 7210 is located at the center position of the four adjusting bolts. A positioning top screw is arranged in the top screw hole 7210, and one end of the positioning top screw passes through the top wall portion 721 of the mounting member 72 and is fixed to the camera body 61, so that a certain adjustment gap is maintained between the camera body 61 and the top wall portion 721 of the mounting member 72. When adjusting the camera posture, the contact point between the top screw and the camera body 61 is used as a fulcrum to adjust the screw-in amount of the four adjusting bolts, so that the posture adjustment of the camera body relative to the X, Y plane can be achieved.

[0097] The camera posture adjustment device provided in the embodiment of the present invention performs the following steps in adjusting the camera posture: the mounting member 72 is rotatably mounted on the base 71 via the rotating shaft 76, the adjustment block 73 is fixed to one side end surface of the base 71, and a certain adjustment gap is maintained between the adjustment block 73 and the mounting member 72, and a pre-tightening connection is performed via the adjustment bolt 74. The camera body 61 is suspended in the installation space by the adjustment bolt, and a top screw is screwed into the top screw hole 7210, so that a certain adjustment gap is maintained between the camera body 61 and the top wall portion 721 of the mounting member 72. With the contact point between the top screw and the camera body 61 as the fulcrum, adjust the screwing amount of the four adjustment bolts, adjust the relative position relationship between the camera body 61 and the mounting member 72, and the four adjustment bolts cooperate with each other to achieve the posture adjustment of the camera relative to the X and Y planes; adjust the screwing amount of the adjustment bolt 74, adjust the gap size between the adjustment block 73 and the first connecting part 723, and accordingly, the mounting member 72 drives the camera body 61 to rotate around the rotating shaft 76, so as to achieve the rotation amount adjustment of the camera body 61 driven by the mounting member 72 in the X and Y planes. After the adjustment is completed, tighten the fixed top screw 75 so that the end of the fixed top screw 75 close to the base 71 is abutted and fixed with the top surface of the base 71, and at the same time, it is necessary to tighten the rotating shaft 76 to achieve the fixation of the camera body 61.

[0098] In a specific embodiment, the material spreading and collecting mechanism 2 includes a bottom plate 21, a first side plate 22, a second side plate 23, a shovel assembly and a drive assembly 25, wherein the first side plate 22 and the second side plate 23 are respectively arranged on two opposite sides of the bottom plate 21. Figure 8 As shown in FIG. 1 , the first side plate 22 and the second side plate 23 extend along a first direction. The shovel plate assembly is disposed on the bottom plate 21 and can reciprocate along the first direction to collect materials.

[0099] In a specific embodiment, the shovel blade assembly includes a first shovel blade assembly 241 and a second shovel blade assembly 242, which are arranged along a first direction and are arranged between a first side plate 22 and a second side plate 23. The space enclosed by the first shovel blade assembly 241, the second shovel blade assembly 242, the first side plate 22 and the second side plate 23 constitutes a material paving area 200 of the material collection device provided in this embodiment.

[0100] In this embodiment, the material spreading and collecting mechanism 2 further includes a glass plate 20 plugged into the bottom plate 21, and the space enclosed by the glass plate 20, the first shovel plate assembly 241, the second shovel plate assembly 242, the first side plate 22, and the second side plate 23 forms the material spreading area 200; setting the bottom of the material spreading area 200 as a glass plate can facilitate the second image acquisition component 32 to collect images of the lower surface of the material. The glass plate 20 can be inserted and removed at any time, which is convenient for regular cleaning or replacement, and prevents the impurities or dust in the material from adhering to the surface of the glass plate 20 and affecting the effect of image acquisition.

[0101] The bottom plate 21 is formed with a collecting port 210 for collecting materials, and the collecting port 210 is located at one end of the second shovel plate assembly 242 away from the first shovel plate assembly 241. Specifically, a collecting funnel 211 is provided at the collecting port 210, and the outlet of the collecting funnel 211 is connected to a material collecting trough 212 for receiving materials.

[0102] The first shovel assembly 241 is fixedly combined with the drive assembly 25. The first shovel assembly 241 can push the second shovel assembly 242 to move along the first direction under the drive of the drive assembly 25, so that the material paving area 200 and the materials in the material paving area 200 move along the first direction to a position that overlaps with the collection port, so that the materials in the material paving area 200 fall into the collection port 210 and fall into the material collection trough 212 through the collection funnel 211, completing the material collection work. It should be noted that the material paving area 200 should include a position that moves along the first direction to at least overlap with the collection port 210 to ensure that the materials in the material paving area 200 can fall into the collection port 210 for material collection.

[0103] In order to prevent the shovel plate assembly from getting stuck during the movement, in a specific embodiment, a sliding pair and a guide rod 27 are provided on the bottom plate 21, and the sliding pair includes a guide rail 261 fixed relative to the bottom plate 21 along a first direction, and a first slider 262 and a second slider 263 slidably connected to the guide rail 261. The first shovel plate assembly 241 and the second shovel plate assembly 242 are erected between the two side plates through the sliding pair and the guide rail 7. Specifically, one end of the first shovel plate assembly 241 is combined and fixed with the first slider 262, and the other end is slidably connected to the guide rod 27; one end of the second shovel plate assembly 242 is combined and fixed with the second slider 263, and the other end is slidably connected to the guide rod 27. The use of the slider pair and the guide rod 27 reduces the friction resistance between the shovel plate assembly and the bottom plate 21 during the movement, which can effectively prevent the shovel plate assembly from getting stuck during the movement.

[0104] Specifically, in order to reduce the overall width of the material collecting device, the sliding pair is set at the top of the first side plate 22, and the guide rod 27 is set at the top of the second side plate 23 along the first direction. The guide rail 261 and the guide rod 27 have the same direction and are both set along the first direction.

[0105] In a specific embodiment, in combination Fig. 9 As shown, the first shovel plate assembly 241 includes a first frame 2411 and a first shovel plate 2412. One end of the first frame 2411 is fixedly connected to the first slider 262, and the end of the first frame 2411 away from the first slider 262 is arranged on the bottom plate 21 through a guide rod 27 arranged along the first direction. The first frame 2411 and the guide rod 27 are slidably connected, and the first frame 2411 can slide along the axial direction of the guide rod 27. A friction-reducing pad 270 is arranged at the contact position between the first frame 2411 and the guide rod 27. The friction-reducing pad 270 and the guide rod 27 form a high-pair motion mechanism, which can reduce the friction resistance of the shovel plate assembly during movement and prevent the shovel plate assembly from getting stuck during movement.

[0106] In a specific embodiment, the first shovel plate 2412 is fixed to the bottom surface of the first frame 2411, and a scraper 240 is provided on the contact surface between the first shovel plate 2412 and the bottom plate 21. The scraper 240 is a silicone plate, which can scrape the material on the bottom plate 21 cleanly while moving in the material spreading area 200, while avoiding crushing the material.

[0107] In a specific embodiment, the first shovel assembly 241 further includes a light shielding sheet 2413 extending downward from one end of the first frame 2411 away from the first slider 262. Specifically, the light shielding sheet 2413 is located on a side of the first frame 2411 away from the first side plate 22, and is located on the outer side of the second side plate 23, that is, on a side of the second side plate 23 away from the first side plate 22. The light shielding sheet 2413 can be integrally formed with the first frame 2411, or can be installed on the first frame 2411 by screwing or welding, etc., which is not limited by the present invention.

[0108] In a specific embodiment, Figure 8As shown in , the device further includes a first photoelectric switch 281 and a second photoelectric switch 282 arranged along the first direction. The first photoelectric switch 281 and the second photoelectric switch 282 are both arranged on the side of the second side plate 23 away from the first side plate 22, and are both located on the side of the second shovel assembly 242 close to the first shovel assembly 241. Specifically, the first photoelectric switch 281 is located closer to the first shovel assembly 241. After the device is started, the first shovel assembly 241 starts to move along the first direction. When the light shielding sheet 2413 moves to the second photoelectric switch 282, the driving assembly 25 is closed, and the first shovel assembly 241 stops moving in the first direction. At this time, the material paving area 200 and the collection port 210 overlap, and the material collection work is performed; after the material collection work is completed, the first shovel assembly 241 performs a reverse reset movement. When the light shielding sheet 2413 blocks the first photoelectric switch 281, the first shovel assembly 241 returns to the initial position, the driving assembly 25 is closed, and the first shovel assembly 241 stops moving.

[0109] like Fig.10 As shown, in a specific embodiment, the second shovel plate assembly 242 includes a second frame 2421 and a second shovel plate 2422. One end of the second frame 2421 is fixedly combined with the second slider 263, and one end of the second frame 2421 away from the second slider 263 is arranged on the bottom plate 21 through a guide rod 27 arranged along the first direction. The second frame 2421 and the guide rod 27 are slidably connected, and the second frame 2421 can slide along the axial direction of the guide rod 27. A friction-reducing pad 270 is arranged at the contact position between the second frame 2421 and the guide rod 27. The friction-reducing pad 270 and the guide rod 27 form a high-pair motion mechanism, which can reduce the friction resistance of the shovel plate assembly during movement and prevent the shovel plate assembly from getting stuck during movement.

[0110] In this embodiment, one end of the first frame 2411 away from the first sliding block 62 and one end of the second frame 2421 away from the second sliding block 63 are relatively fixed to the bottom plate 21 through the same guide rod 27. The stability of the first shovel plate assembly 241 and the second shovel plate assembly 242 is increased, ensuring that the second shovel plate assembly 242 can move along the first direction together with the first shovel plate assembly 241 under the drive of the first shovel plate assembly 241.

[0111] In a specific embodiment, the second shovel plate 2422 is fixed to the bottom surface of the second frame 2421, and a scraper 240 is provided on the contact surface between the second shovel plate 2422 and the bottom plate 21. The scraper 240 is a silicone plate, which can scrape the material on the bottom plate 21 cleanly while moving in the material spreading area 200, while avoiding crushing the material.

[0112] In a specific embodiment, the second shovel plate assembly 242 also includes a shock-absorbing positioning column 2423 located at one end of the second frame 2421, and the base plate 21 includes a limiting plate 212 corresponding to the shock-absorbing positioning column 2423, and the shock-absorbing positioning column 2423 is located on the side of the limiting plate 212 away from the first shovel plate assembly 241. When the second shovel plate assembly 242 is in the initial position, the shock-absorbing positioning column 2423 is against the limit plate 212 and is fixed. When the device is started, the second shovel plate assembly 242 moves along the first direction under the push of the first shovel plate assembly 241 to collect materials. After the material collection work is completed, the second shovel plate assembly 242 moves in the opposite direction along the first direction. When the shock-absorbing positioning column 2423 moves to the limit plate 212, the second shovel plate assembly 242 returns to the initial position, the shock-absorbing positioning column 2423 is against the limit plate 212, and the second shovel plate assembly 242 stops moving. The coordinated use of the shock-absorbing positioning column 2423 and the limit plate 212 realizes the positioning of the second shovel plate assembly 242 when it is reset.

[0113] In a specific embodiment, the shock absorbing positioning column 2423 and the limiting plate 212 are both arranged on the side of the second side plate 23 away from the first side plate 22, wherein the shock absorbing positioning column 2423 is located on the side of the second frame 2421 close to the first shovel plate assembly 241, and correspondingly, the limiting plate 212 is located on the side of the second shovel plate assembly 242 close to the first shovel plate assembly 241 in the first direction. Specifically, the axis of the shock absorbing positioning column 2423 is arranged along the first direction.

[0114] In order to prevent the limiting plate 212 from colliding with the light blocking sheet 2413 , the first photoelectric switch 281 , the second photoelectric switch 282 and the limiting plate 212 are sequentially arranged along the first direction.

[0115] In order to avoid rigid collision between the shock-absorbing positioning column 2423 and the limiting plate 212, in a specific embodiment, the shock-absorbing positioning column 2423 is made of plastic.

[0116] In a specific embodiment, the first shovel plate assembly 241 further includes a first push block 2414 located on a side of the first slider 262 close to the second slider 263, and the second shovel plate assembly 242 further includes a second push block 2424 located on a side of the second slider 263 close to the first slider 262. Specifically, in the process of the first shovel plate assembly 241 pushing the second shovel plate assembly 242 to move, the first push block 2414 acts on the second shovel plate assembly 242 to push the second shovel plate assembly 242 to move in the first direction. The provision of the first push block 2414 and the second push block 2424 can avoid rigid collision between the first slider 262 and the second slider 263, reduce working noise, and increase the service life of the device.

[0117] In a specific embodiment, the device further includes a return spring 29, which is arranged on a side of the second shovel plate assembly 242 close to the first shovel plate assembly 241, one end of the return spring 29 is fixed to the bottom plate 21, and the other end is fixedly combined with the second shovel plate assembly 242, the return spring 29 is always in a stretched state, and the second shovel plate assembly 242 can be reset under the tension of the return spring 29. Specifically, the return spring 29 is located on the outside of the first side plate 22, that is, the side of the first side plate 22 away from the second side plate 23, one end of the return spring 29 is fixedly combined with the first side plate 22, and the other end is fixedly combined with the second frame of the second shovel plate assembly 242.

[0118] In a specific embodiment, in combination Fig.11 As shown, the driving assembly 25 includes a driving motor 251, a motor mounting bracket 252, a driving wheel 253, a driven wheel 254, a driven mounting bracket 255 and a transmission belt 256. The driving motor 51 includes but is not limited to a DC motor, which is fixed to the motor mounting bracket 252 by bolts, the driving wheel 253 is combined and fixed with the output end of the driving motor 251, the driven wheel 254 is installed on the driven mounting bracket 255, and can rotate relative to the driven mounting bracket 255, and the driving wheel 253 and the driven wheel 254 are connected by a transmission belt 56. In other embodiments, the driving assembly 25 can also be a cylinder, which is not limited by the present invention.

[0119] In this embodiment, the driving assembly 25 is disposed on a side of the first side plate 22 away from the second side plate 23, and one end of the first shovel assembly 241 is fixed to the transmission belt 256 at one point. Specifically, a transmission belt pressing plate 2415 is disposed at one end of the first frame 2411 close to the first side plate 22, and the first shovel assembly 241 is fixed to the transmission belt 256 via the transmission belt pressing plate 2415.

[0120] In a specific embodiment, in order to ensure that materials are collected without loss, the inner surfaces of the first side plate 22 and the second side plate 23 are both inclined surfaces.

[0121] The working process of the material spreading and collecting mechanism 2 provided in this embodiment is as follows: initially, the first shovel plate assembly 241 blocks the first photoelectric switch 281, and the first shovel plate assembly 241 is located at the initial position and remains stationary; the second shovel plate assembly 242 is at the initial position under the pulling force of the return spring 29, and the shock-absorbing positioning column 2423 is tightly fitted with the limit plate 212; the material is located in the material spreading area 200 formed by the first shovel plate assembly 241, the second shovel plate assembly 242 and the first side plate 22 and the second side plate 23, waiting for the image acquisition mechanism 3 to acquire an image; when the image acquisition mechanism 3 is in operation, the material is placed in the material spreading area 200 formed by the first shovel plate assembly 241, the second shovel plate assembly 242 and the first side plate 22 and the second side plate 23, and waits ..., and the material is placed in the material spreading area 200 formed by the first shovel plate assembly 241, the second After the material is collected, the first shovel assembly 241 moves in the first direction toward the collecting funnel 211 along the guide rail 261 and the guide rod 27 under the drive assembly 25. After moving a certain distance, the first push block 2414 and the second push block 2424 are tightly fitted, and the drive assembly 25 continues to drive the first shovel assembly 241 to move in the direction of the collecting funnel 211. The first shovel assembly 241 pushes the second shovel assembly 242 to overcome the pulling force of the return spring 29 and move together in the direction of the collecting funnel 211. The material is located between the first side plate 22, the second side plate 23, and the first The material spreading area 200 surrounded by the shovel assembly 241 and the second shovel assembly 242 moves toward the collecting funnel 211 together with the first shovel assembly 241 under the push of the scraper 240 of the first shovel assembly 241; when the light blocking sheet 2413 of the first shovel assembly 241 blocks and triggers the second photoelectric switch 282, the first shovel assembly 241 stops moving. At this time, the material spreading area 200 surrounded by the first shovel assembly 241, the second shovel assembly 242, the first side plate 22, and the second side plate 23 is facing the collecting port 210 of the collecting funnel 211 below. The material is enriched through the collecting funnel 211; when the collection is completed, the driving component 25 drives the first shovel plate component 241 to reset in the opposite direction, and the second shovel plate component 242 performs a reset movement under the action of the reset spring 29. When the shock-absorbing positioning column 2423 moves to a position in contact with the positioning plate 12, the second shovel plate component 242 stops moving, and the second push block 2424 separates from the first push block 2414. Driven by the driving component 25, the first shovel plate component 241 continues to move away from the collecting funnel 211 until the light blocking sheet 2413 triggers the first photoelectric switch 281 and the movement stops.

[0122] The working process of the grain appearance detection device provided in the embodiment of the present invention is as follows: the material is put into the hopper 45, and the material falls into the shell 43. Under the control of the control system 100, the motor 46 drives the loading paddle 44 to rotate, and under the push of the paddle part 440, the material falls into the material spreading area 200 formed by the glass plate 20 and the first shovel plate assembly 241, the second shovel plate assembly 242, the first side plate 22 and the second side plate 23 in the material spreading collection mechanism 2, and then the first reflector lamp 501 is turned on, the second reflector lamp 502 is turned off, and the first shooting device 601 collects the top surface image of the material; then the first reflector lamp 501 is turned off, the second reflector lamp 502 is turned on, and the second shooting device 601 collects the top surface image of the material; 02 collects the bottom surface image of the material; then the first reflector lamp 501 and the second reflector lamp 502 are both turned off, and the four groups of lamp bodies in the second reflector lamp 502 are lit in turn, and the first shooting device 601 obtains four burst waist images in turn; after the image acquisition is completed, the first shovel plate assembly 241 moves to the side of the collecting funnel 211, pushing the material to move to the side of the collecting funnel 211, and then pushing the second shovel plate assembly 242 to overcome the resistance of the reset spring 29 to move together, and the material falls into the collecting port 210 through the collecting funnel 211. The first shovel plate assembly 241 is reset under the drive of the driving assembly 25, and the second shovel plate assembly 242 is reset under the pulling force of the reset spring 29, which can realize automatic loading, multiple sampling, automatic detection, and automatic collection of materials. This instrument is small in size, light in weight, simple to operate, and efficient in detection; it can greatly reduce the work intensity, improve work efficiency, and can conveniently perform real-time on-site detection of samples.

[0123] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A grain appearance detection device, characterized in that: The device comprises: Frame; A material spreading and collecting mechanism located on the frame, the material spreading and collecting mechanism being configured to spread the material to facilitate the acquisition of the material appearance image and to collect the material after the image acquisition is completed; An image acquisition mechanism, the image acquisition mechanism being configured to acquire an appearance image of the material spread on the material spreading and collecting mechanism; A feeding mechanism, wherein the feeding mechanism is configured to convey materials to a material spreading and collecting mechanism; The image acquisition mechanism includes two image acquisition components symmetrically arranged on the upper and lower sides of the material paving and collecting mechanism, which are respectively a first image acquisition component and a second image acquisition component; The feeding mechanism is located at the top of the device, and the feeding mechanism includes a material channel for conveying materials to the material paving and collecting mechanism; The image acquisition component comprises: Mounting plate; A reflector lamp disposed on the mounting plate; and A photographing device fixed to a side of the reflector lamp away from the mounting plate; The mounting plate is provided with a light-through hole corresponding to the reflector lamp; The reflector lamp comprises: A lampshade disposed on a side of the mounting plate away from the material spreading and collecting mechanism; and A lamp body arranged around the light-through hole; The lamp body is located inside the lampshade and is fixed to the mounting plate; The lampshade comprises a lamp cover portion and a blocking portion formed by extending the edges of the lamp cover portion toward the mounting plate; The inner surface of the enclosure portion is provided with a diffuse reflection layer; A light absorbing layer is arranged on the inner surface of the lamp cover, and a light-transmitting hole corresponding to the shooting device is arranged at the center of the lamp cover; The light-through hole is in a rectangular shape, and the lamp bodies arranged on the mounting plate of the second image acquisition component are divided into four groups, and the lamp bodies arranged along the same side of the light-through hole are one group, and each group of lamp bodies can be lit separately; The light reflected by the material enters the shooting device through the light-transmitting hole of the reflector; The material paving and collecting mechanism comprises: a bottom plate; A first side plate and a second side plate extending along a first direction at two opposite sides of the bottom plate; a shovel plate assembly located on the bottom plate and capable of reciprocating along a first direction; and Drive components; The shovel board assembly comprises a first shovel board assembly and a second shovel board assembly arranged along a first direction and mounted between a first side plate and a second side plate, and a space enclosed by the first shovel board assembly, the second shovel board assembly, the first side plate and the second side plate forms a material spreading area; A collecting port for collecting materials is formed on the bottom plate, and the collecting port is located on a side of the second shovel plate assembly away from the first shovel plate assembly; The first shovel blade assembly is fixedly combined with the driving assembly, and the first shovel blade assembly is configured to push the second shovel blade assembly to move along the first direction under the driving of the driving assembly; The material spreading area includes a position that moves along the first direction to at least partially overlap with the collection port; The material spreading and collecting mechanism also includes a glass plate plugged into the bottom plate; The space enclosed by the glass plate, the first shovel plate assembly, the second shovel plate assembly, the first side plate and the second side plate forms a material spreading area; The glass plate is configured to facilitate the image acquisition mechanism to acquire an image of the lower surface of the material.

2. The device according to claim 1, characterized in that The feeding mechanism comprises: Mounting bracket; A housing mounted on top of the image acquisition mechanism via a mounting bracket; a loading plate located in the housing and rotatable relative to the housing; and A hopper located at the top of the shell, wherein the outlet of the hopper is connected to the interior of the shell; A discharge port is provided at the bottom of the shell, and the discharge port is connected to the material channel.

3. The device according to claim 2, characterized in that The material feeding plate comprises a main body and a material feeding portion formed by the edge of the main body extending along the radial direction of the material feeding plate; The material shifting portion is configured to shift the material entering the shell from the hopper outlet to the discharge port as the loading shifting plate rotates, so that the material falls into the material channel and is transported to the material spreading and collecting mechanism through the material channel.

4. The device according to claim 1, characterized in that The shooting device comprises: A camera body is arranged on a side of the lampshade away from the mounting plate through an adjustment mechanism; a reflector mount located at the front end of the camera body; and A reflector disposed on the reflector seat; The port of the reflector seat corresponds to the light-transmitting hole.

5. The device according to claim 4, characterized in that The regulating mechanism comprises: Base; A mounting member located on the base and rotatable in the X and Y planes; and An adjustment block fixed on one end surface of the base; An installation space for accommodating the camera body is formed between the base and the installation member; The mounting member includes an adjusting bolt, and the camera body is suspended in the mounting space by the adjusting bolt; the adjusting bolt is configured to adjust the posture of the camera relative to the X and Y planes by adjusting the screwing amount; The adjustment block includes a fixing portion fixedly combined with the base, and a matching portion corresponding to the mounting member, the matching portion includes an adjustment bolt penetrating the matching portion of the adjustment block, and the adjustment bolt is configured to adjust the rotation amount of the mounting member in the X and Y planes by adjusting the screw-in amount.

Images