Double-camera multi-view-angle material analyzer

Abstract

The invention relates to the technical field of food package detection, and discloses a double-camera multi-view material analyzer, which comprises a material input module, a main frame, a camera module, an illumination and reflector module, a material slideway, a finished product material conveying module and an abnormal material conveying module. The material input module is used for receiving materials, differentially separating the materials and then inputting the materials to the material slide way; the camera module comprises two groups of camera assemblies fixed on the main frame; the lighting and reflecting mirror module comprises a reflecting mirror, a lampshade shell and a lamp set. The number of the reflecting mirrors is two, and each reflecting mirror is matched with one camera assembly. According to the invention, the complete image information of the circumference of the large material can be obtained only by using two groups of cameras and reflecting mirror groups, and the system configuration and adjustment are simple; according to the arrangement of the arc-shaped light source, the illumination is more uniform, reflected light and imaging shadows are eliminated, and the materials are accurately recognized and removed.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging and detection, and in particular to a dual-camera multi-viewing angle material analyzer. Background Art

[0002] In the field of food packaging and testing, after the materials are vacuum-sealed, they need to be inspected for leaks, damage, or foreign matter impurities. X-ray detection technology can detect foreign matter such as metal, glass, ceramics, stone, bone, plastic, etc. in food, but foreign matter similar to the material of the food cannot be detected and can only rely on visual camera detection technology.

[0003] For small or flat materials, in general, one visual camera can basically collect and obtain their key feature information. However, for larger materials, especially packaged food materials, which are generally three-dimensional, only one visual camera cannot obtain their complete feature information. In order to solve this problem, it is necessary to install multiple visual cameras, capture image information of different positions of the material from multiple angles, and then transmit it to the data processing system for identification and analysis. The more visual cameras are installed, the more complex the system is, the higher the installation accuracy requirements and the greater the difficulty of adjustment, and the more difficult the image data processing is.

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and provide a material detection and analysis system that can obtain relatively complete image information of the material using only two sets of cameras. Summary of the invention

[0005] In order to solve the technical problems raised in the background technology, the present invention provides a dual-camera multi-viewing angle material analyzer.

[0006] The present invention is implemented by the following technical scheme: a dual-camera multi-view material analyzer, including a material input module, a main frame, a camera module, a lighting and reflector module, a material slide, a finished material conveying module, an abnormal material conveying module,

[0007] The material input module is used to receive the material, separate the material at a differential speed, and then input it into the material chute;

[0008] The camera module includes two sets of camera components fixed to the main frame;

[0009] The lighting and reflector module includes a reflector, a lampshade shell and a lamp group; two groups of reflectors are provided, and each group of reflectors cooperates with a group of camera components to form an imaging system to realize the collection of material image information within the vertical central axis field of view; the lamp group is arranged and installed on the lampshade shell to form an approximately arc-shaped lighting to increase lighting uniformity, eliminate reflections and reduce material shadows;

[0010] The finished material conveying module is used to convey the finished material, and when the system identifies and sends an abnormal material rejection signal, the abnormal material is rejected to the abnormal material conveying module.

[0011] As a further improvement of the above scheme, the material slide includes a slide support and a material slide track, wherein: the slide support is installed on the main frame, and the material slide track can be adjusted in height according to the material conditions to control the speed of entering the image acquisition area.

[0012] As a further improvement of the above scheme, the material input module includes a support frame and a material conveying module. The material conveying module is mainly composed of a conveyor belt assembly and a drive motor. The front of the conveyor belt assembly is connected to the material slide track of the material slideway, and the rear is connected to the material delivery port. After the material falls into the belt, it is accelerated, thereby separating the intervals.

[0013] As a further improvement of the above scheme, the finished material conveying module is mainly composed of a conveyor belt assembly, a drive motor, and a rejection mechanism. The front of the conveyor belt assembly is connected to a receiving hopper or a receiving basket, and the rear of the conveyor belt assembly is connected to a material sliding track. The rejection mechanism is installed on one side of the conveyor belt. When the system identifies and sends an abnormal material rejection signal, the rejection mechanism pushes the abnormal material into the abnormal material conveying module.

[0014] As a further improvement of the above solution, the abnormal material conveying module is mainly composed of a conveyor belt assembly and a drive motor. The abnormal materials enter the conveyor belt through the conveyor disc of the rejection mechanism and are then conveyed to the abnormal material hopper or abnormal material basket.

[0015] The dual-camera multi-view material analyzer of the present invention includes an analyzer body and a material conveying line body. The analyzer body is provided with a main frame for installing a material slide, a lighting and reflector module, a camera module, and a rejection module. The lighting and reflector module and the camera module constitute an image acquisition system. By combining two groups of cameras and multiple groups of reflectors arranged at different angles, the complete key image information of the material surrounding the upper circle can be obtained, and the function of obtaining the complete image information of the surrounding circle in the original scheme that requires more groups of cameras is realized. At the same time, the design of the lighting module effectively eliminates reflections and shadows, making the imaging effect better. When the material enters the material slide from the conveying line body one after another and passes through the camera field of view, the system obtains the material image information and forms a processing signal after processing and judgment. When the material passes through the lower rejection module, it is processed according to the processing signal, and the abnormal material is rejected to the foreign material conveying line body, and the normal material is transmitted along the original conveying line body. That is, the analyzer realizes the image acquisition and recognition of the material, the rejection of the abnormal material, and has a high degree of automation, which is suitable for a variety of material sampling and detection occasions.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can obtain complete image information around a large material by using only two groups of cameras and a reflector group, and the system configuration and adjustment are simple; the arc light source arrangement proposed in the present invention makes the illumination more uniform, eliminates reflections and imaging shadows, and enables accurate material identification and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the overall structure of the dual-camera multi-view material analyzer proposed by the present invention;

[0019] Figure 2 This is a right view of the dual-camera multi-view material analyzer proposed by the present invention;

[0020] Figure 3 This is a left view of the dual-camera multi-view material analyzer proposed by the present invention;

[0021] Figure 4 A top view of the dual-camera multi-view material analyzer proposed by the present invention;

[0022] Figure 5 A working principle diagram of a single camera and a reflector in the illumination and reflector module proposed by the present invention;

[0023] Figure 6 A schematic diagram of the arrangement of dual cameras and light sources in the illumination and reflector module proposed in the present invention;

[0024] Figure 7 Schematic diagram of the installation structure of the installation mechanism and the visual camera in Example 2 of the present invention;

[0025] Figure 8 For the present invention Figure 7 A in the enlarged view;

[0026] Fig. 9 For the present invention Figure 7 Schematic diagram of the connection structure between the lower clamping rod and the support rod.

[0027] Description of main symbols:

[0028] 110, main frame; 120, camera module; 121, mounting bracket; 122, camera assembly; 130, lighting and reflector module; 131, reflector; 132, lamp housing; 133, lamp assembly; 140, material slide; 141, slide bracket; 142, material slide track; 143, finished material conveying module; 144, conveyor belt assembly; 145, drive motor; 146, abnormal material conveying module; 147, conveyor belt assembly; 148, drive motor ; Center beam 150, telescopic rod 151, viewing angle camera 152, mounting plate 153, upper clamping rod 154, lower clamping rod 155, gripping rod 156, auxiliary positioning mechanism 157, support rod 158, connecting rod 159, rotating member 160, upper part 161, lower part 162, movable block 163, spring 164, middle rod 165, slide groove 167, strip hole 168; 210, support frame; 220, material input module; 221, transmission belt assembly; 222, drive motor. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0030] Embodiment 1:

[0031] Please combine Figure 1-Figure 6 The present embodiment proposes a dual-camera multi-view material analyzer, which includes a material input module 200, a main frame 110, a camera module 120, an illumination and reflector module 130, a material chute 140, a finished material conveying module 150, and an abnormal material conveying module 160.

[0032] What needs to be explained specifically is:

[0033] In this solution, the material input module 200 is used to receive the material, and differentially separate the material and then input it to the material chute 140. The camera module 120 includes two sets of camera components 122 fixed on the main frame 110.

[0034] The lighting and reflector module 130 includes a reflector 131, a lampshade shell 132 and a lamp group 133; two groups of reflectors 131 are provided, and each group of reflectors 131 cooperates with a group of camera components 122 to form an imaging system to realize the collection of material image information within the vertical central axis field of view; the lamp group 133 is arranged and installed on the lampshade shell 132 to form an approximately arc-shaped lighting to increase the uniformity of lighting, eliminate reflections and reduce material shadows.

[0035] The finished material conveying module 150 is used to convey the finished material, and when the system identifies and sends an abnormal material rejection signal, the abnormal material is rejected to the abnormal material conveying module 160 .

[0036] The material slide 140 includes a slide support 141 and a material slide track 142, wherein: the slide support 141 is installed on the main frame 110, and the material slide track 142 can be adjusted in height according to the material conditions to control the speed of entering the image acquisition area.

[0037] The material input module 200 includes a support frame 210 and a material conveying module 220. The material conveying module 220 is mainly composed of a conveying belt assembly 221 and a driving motor 222. The front part of the conveying belt assembly 221 is connected to the material slide track 141 of the material slide 140, and the rear part is connected to the material delivery port. After the material falls into the belt, it is accelerated, thereby separating the spaced

[0038] The finished material conveying module 150 is mainly composed of a conveyor belt assembly 151, a drive motor 152, and a rejection mechanism 153. The front of the conveyor belt assembly 151 is connected to a material receiving hopper or a material receiving basket, and the rear of the conveyor belt assembly 151 is connected to a material sliding track. The rejection mechanism 153 is installed on one side of the conveyor belt. When the system recognizes and sends an abnormal material rejection signal, the rejection mechanism pushes the abnormal material into the abnormal material conveying module 160.

[0039] The abnormal material conveying module 160 is mainly composed of a conveyor belt assembly 161 and a driving motor 162. The abnormal materials enter the conveyor belt 161 through the conveyor disc of the rejection mechanism 153 and are then conveyed to the abnormal material hopper or the abnormal material basket.

[0040] Embodiment 2:

[0041] Reference Figure 7-Figure 9 ,In order to facilitate the adjustment of the installation angle of the visual camera so as to facilitate the cooperation of the rear reflector, a mounting mechanism for conveniently installing and fixing the visual camera is proposed in this scheme;

[0042] The mounting mechanism includes a central beam 150, two mounting plates 153 and two telescopic rods 151. The central beam 150 is fixed to the outside, one end of the two mounting plates 153 is rotatably connected to each other, one end of the two telescopic rods 151 is rotatably connected to the two mounting plates 153, and the other ends of the two telescopic rods 151 are rotatably connected to opposite sides of the central beam 150.

[0043] Each mounting plate 153 is provided with a through hole, and each through hole is arrayed around with a plurality of groups of quick positioning mechanisms for positioning the viewing angle camera, the quick positioning mechanism comprising a strip hole 168 provided on the mounting plate 153, an intermediate rod 165 slidably arranged in the strip hole 168, and an upper clamping rod 154 and a lower clamping rod 155 respectively connected to both ends of the intermediate rod 165, wherein: the upper clamping rod 154 and the lower clamping rod 155 are both "Z"-shaped rods, the upper clamping rod 154 can rotate relative to the intermediate rod 165, and the end of the lower clamping rod 155 is rotatably connected with a support rod 158, and the support rod 158 is used to support the visual camera from the bottom after it is placed in the through hole;

[0044] In this embodiment, a sliding groove 167 is provided in the strip-shaped hole 168 to slide with the middle rod 165 .

[0045] The "Z"-shaped upper clamping rod 154 includes a horizontal section at the tail and a horizontal section in the middle, and a gripping rod 156 is fixed above the end of the middle horizontal section. The end of the middle horizontal section and the top of the middle rod 165 are rotatably connected through a rotating shaft. A through hole is opened on the middle horizontal section, and an auxiliary positioning rod 157 is movably inserted through the through hole. The auxiliary positioning rod 157 and the middle horizontal section are relatively fixed in position along their length direction.

[0046] The auxiliary positioning rod is an "L"-shaped rod, and the top of the auxiliary positioning rod 157 is connected to the upper clamping rod 154, a rotating member 160 is sleeved on the outer middle part of the auxiliary positioning rod 157, and the lower part 162 of the auxiliary positioning rod 157 is connected to a sliding positioning unit, and the sliding positioning unit is slidably connected to the mounting plate 153. The sliding positioning unit includes a movable groove opened on the top surface of the mounting plate 153, a movable block 163 slidably arranged in the movable groove, a threaded groove is opened on the top of the movable block 163, and the lower part 162 can be spirally connected to the threaded groove, so that the auxiliary positioning rod 157 is used to adjust the vertical position of the upper clamping rod, and a spring 164 is also installed at the bottom of the threaded groove.

[0047] When in use, first use the grip 156 to rotate the upper clamping rod 154, so as to facilitate the insertion of the visual camera, so that the bottom of the visual camera is supported by the support rod 158, and then rotate the reset grip 156, and then rotate the rotating member 160, under the spiral action of the lower part 162 and the threaded groove, drive the upper part 161 to pull the end of the upper clamping rod from the top to press the visual camera, so as to fix it. After fixing, refer to Fig. 9 , rotate the support rod 158 to the dotted line position so as not to block the shooting angle of the viewing camera.

[0048] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A dual-camera multi-view material analyzer, characterized in that: The invention comprises a material input module (200), a main frame (110), a camera module (120), an illumination and reflector module (130), a material slideway (140), a finished material conveying module (150), an abnormal material conveying module (160), The material input module (200) is used to receive materials, separate the materials at differential speeds, and then input them into the material chute (140); The camera module 120 includes two groups of camera assemblies (122) fixed on the main frame (110); The lighting and reflector module (130) comprises a reflector (131), a lampshade shell (132) and a lamp group (133); the reflector (131) is provided in two groups, and each group of reflectors (131) cooperates with a group of camera components (122) to form an imaging system to realize the collection of material image information within the vertical central axis field of view; the lamp group (133) is arranged and installed on the lampshade shell (132) to form an approximately arc-shaped lighting to increase lighting uniformity, eliminate reflections and reduce material shadows; The finished material conveying module (150) is used to convey finished material, and when the system identifies and sends an abnormal material removal signal, the abnormal material is removed to the abnormal material conveying module (160).

2. A dual-camera multi-view material analyzer as claimed in claim 1, characterized in that: The material slideway (140) comprises a slideway support (141) and a material slide track (142), wherein the slideway support (141) is installed on the main frame (110), and the material slide track (142) can be adjusted in height according to the material conditions to control the speed of entering the image acquisition area.

3. A dual-camera multi-view material analyzer as claimed in claim 1, characterized in that: The material input module (200) comprises a support frame (210) and a material conveying module (220). The material conveying module (220) is mainly composed of a conveying belt assembly (221) and a driving motor (222). The front part of the conveying belt assembly (221) is connected to the material sliding track (141) of the material slideway (140), and the rear part is connected to the material delivery port. After the material falls into the belt, it is accelerated, thereby separating the gaps.

4. A dual-camera multi-view material analyzer as claimed in claim 1, characterized in that: The finished material conveying module (150) is mainly composed of a conveying belt assembly (151), a driving motor (152), and a rejection mechanism (153). The front of the conveying belt assembly (151) is connected to a receiving hopper or a receiving basket, and the rear of the conveying belt assembly (151) is connected to a material sliding track. The rejection mechanism (153) is installed on one side of the conveying belt. When the system recognizes and sends an abnormal material rejection signal, the rejection mechanism pushes the abnormal material into the abnormal material conveying module (160).

5. A dual-camera multi-view material analyzer as claimed in claim 1, characterized in that: The abnormal material conveying module (160) is mainly composed of a conveyor belt assembly (161) and a drive motor (162). The abnormal material enters the conveyor belt (161) through the conveyor disk of the rejection mechanism (153) and is then conveyed to the abnormal material hopper or the abnormal material basket.

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