Commodity inspection table equipment and system

Abstract

The invention discloses a commodity inspection table device and system, and the device comprises an inspection table main body which is of a box structure and is internally used for placing or connecting a control device; the operation table top is positioned at the top of the inspection table main body and comprises a commodity placing area; the side box body assembly is vertically fixed on the inspection table main body and is vertically connected with the ceiling assembly, the side box body assembly adopts a box body structure, the interior of the side box body assembly is used for placing assembly equipment for interacting with a user and identifying identity, and the assembly equipment is connected with the control equipment; the ceiling assembly is of a box body structure and is perpendicularly connected with the side box body assembly, at least one light source light supplementing lamp and at least one camera are placed in a box body, the camera is connected with control equipment and used for collecting images of commodities, and a plurality of light supplementing lamps are arranged on the periphery of the camera in a surrounding mode. Therefore, the problem that the intelligent identification rate of commodities is low due to the dark and fuzzy and local overexposure phenomena existing in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of machine vision technology, and in particular to a commodity inspection station device and system. Background Art

[0002] With the deepening of global integration, the flow of goods and cargo around the world is becoming more frequent, and the number of inbound and outbound passengers is growing rapidly. The customs inspection business volume of goods carried by passengers has also increased sharply, and the pressure on passengers to quickly pass customs is becoming increasingly obvious. In this situation, how to quickly count the goods carried by passengers, identify taxable items and tax amounts, accurately implement tax exemptions and deductions, and create a harmonious and smooth customs clearance environment is an important challenge for customs passenger inspection sites.

[0003] Empowering customs supervision operations with intelligent means, improving the accuracy of supervision, and promoting cross-border trade facilitation has become an inevitable trend in the development of customs business.

[0004] At present, most of the intelligent commodity inspection equipment in the domestic customs market has the problem of insufficient intelligence. The commodity data collection and entry during the inspection process are mainly through barcode scanning and manual entry, which is time-consuming, labor-intensive and inefficient. Some inspection equipment is equipped with cameras with commodity intelligent recognition functions, and commodity inspection and data entry are carried out based on the recognition results. However, due to the unreasonable layout of light sources and cameras, the pictures of commodities are dark and blurred, and some parts are overexposed, resulting in a low intelligent commodity recognition rate. Summary of the invention

[0005] The purpose of this application is to provide a commodity inspection station device and system, which is used to solve the problem that the commodity pictures taken by the existing commodity inspection stations are dark and blurred, and partially overexposed, resulting in a low intelligent recognition rate of commodities.

[0006] In a first aspect, an embodiment of the present application provides a commodity inspection station device, including:

[0007] The main body of the inspection station adopts a box structure, and the interior is used to place or connect control equipment;

[0008] An operating table, located on the top of the inspection table body, including a commodity placement area;

[0009] The side box assembly is vertically fixed on the inspection platform body and vertically connected to the ceiling assembly, adopts a box structure, and is used to place component equipment for interaction and identity recognition with the user, and the component equipment is connected to the control device;

[0010] The ceiling assembly adopts a box structure and is vertically connected to the side box assembly. The interior of the box is used to place at least one light source fill light and at least one camera. The camera is connected to the control device and is used to capture images of the goods. Multiple fill lights are arranged around a camera in a surrounding arrangement.

[0011] In some possible embodiments, the operating table further includes a bill identification area, the structure of the bill identification area is a transparent material pressure plate embedded in the operating table in the form of a hidden damping shaft, and the bill identification area is flush with the operating table.

[0012] In some possible embodiments, the side box body assembly is a single-sided arm-type assembly, and a top supporting beam extends horizontally from the top of the side box body assembly, one end of the top supporting beam is fixedly connected to the side box body assembly body, and the other end of the top supporting beam is fixedly connected to the ceiling assembly.

[0013] In some possible embodiments, one end of the top supporting beam is fixedly connected to the side box assembly body by welding or fastening screws or curing to become a part of the side box assembly body.

[0014] In some possible embodiments, the ceiling assembly includes a fixing member located at an upper portion of the box structure of the ceiling assembly and fixedly connected to two side surfaces of the ceiling assembly;

[0015] The fixing member includes a first set of screws and a second set of screws;

[0016] The end faces of the first set of screws are in contact with the top supporting beam below, and by controlling the screwing position of the first set of screws, the distance between the ceiling assembly and the top supporting beam is adjusted to drive the adjustment of the height of the ceiling assembly in the vertical direction;

[0017] The end faces of the second set of screws directly pass through the top supporting beam below, and the second set of screws are fastened to the top supporting beam by nuts.

[0018] In some possible embodiments, the merchandise placement area includes at least two merchandise placement sub-areas, the bill recognition area overlaps with the merchandise placement area, and the ceiling assembly is arranged with multiple cameras respectively aimed at each merchandise placement sub-area and one camera aimed at the bill recognition area, wherein the FOV field of view boundaries of two adjacent cameras partially overlap, and the FOV field of view boundaries of all cameras cover the merchandise placement area.

[0019] In some possible embodiments, the field of view boundary formed by the field of view angles FOV of all the cameras covers the commodity placement area and does not exceed a set ratio threshold of the commodity placement area;

[0020] The boundary of the fields of view formed by the FOVs of two adjacent cameras partially overlaps, and the ratio of the width of the overlap to the width of the fields of view formed by the FOVs of the two adjacent cameras is in the range of 5% to 10%.

[0021] In some possible embodiments, the fill light uses a flat diffuser plate, and the ratio of the length to the width of a single flat diffuser plate is in the range of 1 to 2.5.

[0022] In some possible embodiments, the ratio of the total area of ​​the diffusion plates of the plurality of fill lights to the area of ​​the operating table is not less than 25%;

[0023] Any fill light should be within 80mm of the nearest camera.

[0024] In a second aspect, an embodiment of the present application provides a commodity inspection station system, the system comprising:

[0025] The commodity inspection station equipment provided in the first aspect above;

[0026] The server is connected to the control device of the commodity inspection station device and is used to communicate with the control device to perform commodity inspection.

[0027] The embodiment of the present application can enhance the overall illumination and uniformity of the light source on the operating table by reasonably arranging the camera and the surface light source fill light on the ceiling assembly, reduce the interference of ambient light, effectively suppress the local overexposure of the shooting image, improve the quality of the camera shooting picture, and ensure the intelligent recognition effect of the product. In this way, the problem of dim and blurred product pictures and local overexposure in the existing product inspection table is solved, which leads to a low intelligent recognition rate of the product.

[0028] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings introduced below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A structural diagram of a commodity inspection station device according to an embodiment of the present application;

[0031] Figure 2A schematic diagram of arranging a bill identification area on an operation table according to an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a bill identification area according to an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the FOV of two cameras aimed at a product placement area according to an embodiment of the present application;

[0034] Figure 5 It is a schematic diagram of arranging two cameras aimed at a commodity placement area and one camera aimed at a bill recognition area according to an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of arranging two cameras and three fill lights on a ceiling assembly according to an embodiment of the present application;

[0036] Figure 7 A schematic diagram of a camera and an operating table arranged in accordance with an embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the arrangement of fill lights and cameras with a specification of 300*300 according to an embodiment of the present application;

[0038] Fig. 9 This is a schematic diagram of the arrangement of fill lights and cameras with a specification of 600*300 according to an embodiment of the present application;

[0039] Fig.10 This is a schematic diagram corresponding to a side box assembly without fixing the top supporting cross beam according to an embodiment of the present application;

[0040] Fig.11 A schematic diagram of fixing a ceiling assembly through a top supporting beam according to an embodiment of the present application;

[0041] Fig.12 It is a schematic diagram of fixing the ceiling assembly through the top support beam and arranging the camera and the fill light according to one embodiment of the present application;

[0042] Fig.13 It is a partially enlarged schematic diagram of a fixing member for fixing a ceiling assembly according to one embodiment of the present application;

[0043] Fig.14 A flowchart of a method for fixing a ceiling assembly according to an embodiment of the present application;

[0044] Fig.15 The present invention is a structural diagram of a commodity inspection station system according to one embodiment of the present application. DETAILED DESCRIPTION

[0045] To further illustrate the technical solution provided by the embodiments of the present application, a detailed description is given below in conjunction with the accompanying drawings and specific implementation methods.

[0046] In view of the problem that the product pictures taken by the commodity inspection table in the related art are dark and blurred, and partially overexposed, resulting in a low intelligent recognition rate of the product, this application proposes a commodity inspection table device and system to enhance the overall illumination and uniformity of the light source on the operating table, improve the quality of the pictures taken, and ensure the intelligent recognition effect of the product.

[0047] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0048] The embodiment of the present application provides a commodity inspection station device, which uses machine vision technology to realize intelligent batch identification, counting, inspection and other quick and efficient operations of commodities carried by passengers, such as Figure 1 As shown, including:

[0049] The inspection station body 10 adopts a box structure, and the interior is used to place or connect control equipment;

[0050] The main body of the inspection station adopts a box structure, and the interior is used to place and connect control equipment such as industrial computers, algorithm servers, timing controllers, hard disk recorders, switches, etc.

[0051] The operating table 20 is located on the top of the inspection table body 10 and includes a commodity placement area;

[0052] The above-mentioned commodity placement area is the area where users place the commodities they carry, and is used for intelligent identification, inventory and inspection of commodities.

[0053] The side box assembly 30 is vertically fixed on the inspection platform body 10 and vertically connected to the ceiling assembly 40, and adopts a box structure, and the component equipment for interacting with the user and identifying the identity is placed inside, and the component equipment is connected to the control device;

[0054] The above-mentioned components for interacting with the user and identifying the identity may be, but are not limited to, a display screen, a face recognition device, a keyboard and a mouse, etc., which are used for information interaction and confirmation between the user and the control device.

[0055] The ceiling assembly 40 adopts a box structure and is vertically connected to the side box assembly 30. The interior of the box is used to place at least one light source fill light and at least one camera. The camera is connected to a control device and is used to capture images of the product. Multiple fill lights are arranged around a camera in a surrounding arrangement.

[0056] The above-mentioned ceiling assembly 40 adopts a box structure, and the light source fill light and the high-definition industrial camera are placed inside the box structure. The lenses of the light source fill light and the high-definition industrial camera are aimed at the operating table to collect data such as taking photos and videos of the goods placed on the operating table.

[0057] The commodity inspection station equipment provided in the embodiment of the present application uses machine vision technology to realize intelligent batch identification, counting, and inspection of commodities carried by passengers, effectively solving the time-consuming, labor-intensive, and inefficient manual inspection of customs passengers. By reasonably arranging high-definition industrial cameras and surface light source fill lights above the equipment, the illumination and overall uniformity of the light source on the operating table can be enhanced, the interference of ambient light can be reduced, and local overexposure during the shooting process can be effectively suppressed, the quality of pictures taken by industrial cameras can be improved, and the intelligent identification effect of commodities can be ensured. The equipment also has traditional inspection functions such as barcode scanning. It can realize quick and efficient operations such as intelligent batch identification, counting, and inspection of commodities carried by inbound passengers at the customs.

[0058] In some possible embodiments, Figure 2 and Figure 3 As shown, the operating table 20 also includes a bill identification area 21. The structure of the bill identification area is that a transparent material pressure plate 210 is embedded in the operating table 20 in the form of a hidden damping shaft 211, and the bill identification area is flush with the operating table. The transparent material pressure plate 210 can be a glass pressure plate, and the glass pressure plate is provided as a bill placement area 212.

[0059] In actual operation, passengers may encounter situations where their shopping receipts are folded and wrinkled, which may affect intelligent photo recognition. To solve this problem, the operating table also includes a special receipt recognition area. A glass pressure plate is designed to flatten and correct the wrinkles on the receipts. The surface of the glass pressure plate uses a special process to reduce the impact of the reflection on the glass surface on the photo quality. The glass pressure plate uses a hidden damping shaft, which supports one-handed opening, and the position can be automatically fixed, which is convenient for user operation. The receipt recognition area adopts an embedded design, which is basically flush with the operating table, and can take into account the placement and recognition of other products, providing users with the maximum table operation space.

[0060] In some possible embodiments, Figure 2 As shown, the number of commodity placement areas 22 is at least two, and the bill recognition area 21 overlaps with one of the commodity placement areas 22. Of course, one commodity placement area may be arranged, or more than two commodity placement areas may be arranged, and the number of bill recognition areas may be one or more. If there are multiple areas, they may overlap with corresponding commodity placement areas respectively. Of course, a special bill recognition area independent of the commodity placement area may also be arranged on the operation table.

[0061] like Figure 4As shown, in the embodiment of the present application, the ceiling assembly is arranged with multiple cameras respectively aimed at each product placement area and a camera aimed at the bill recognition area, wherein the FOV field of view 23 of each camera is aimed at a product placement area, the FOV field of view boundaries of two adjacent cameras partially overlap, the overlapping area 24 of the FOV field of view boundaries of the two cameras is relatively small, and the FOV field of view boundaries of all cameras cover the product placement area.

[0062] The commodity placement area on the operating table of the commodity inspection station equipment is used to place commodities, the camera in the ceiling assembly aimed at the commodity placement area is used to take pictures of commodities for intelligent identification, and the camera in the ceiling assembly aimed at the bill identification area is used to take pictures of bills for intelligent identification. By way of example, for commodity identification, two industrial cameras of appropriate specifications can be selected and superimposed to cover the range of the operating table. For shopping bill identification, since bills are usually small in size and have small text, in order to improve the recognition accuracy, another industrial camera is set up with the shooting range aimed at the shopping bill identification area on the operating table, which is specifically used for bill identification. The specific coverage plan for the operating table is as follows: Figure 5 As shown, the ceiling assembly is arranged with multiple cameras aimed at each commodity placement area and one camera aimed at the bill recognition area. The FOV field of view 23 of two cameras is aimed at one commodity placement area, and the FOV field of view 25 of one camera is aimed at the bill recognition area.

[0063] The position and quantity of industrial cameras in the ceiling assembly are determined by checking the size of the operating table area, camera specifications, and the height of the ceiling from the table. The basic rules for the reasonable arrangement of the position and quantity of cameras are: select high-definition industrial cameras with high resolution and large FOV, and the layout of the camera positions so that the field of view formed by the field of view angle FOV of all cameras covers the commodity placement area and does not exceed the set ratio threshold of the commodity placement area. For example, it should not exceed 10% of the operating table range to avoid wasting photo pixels and maximize the proportion of effective pixels in the imaging of objects; the position arrangement of industrial cameras also needs to consider the theoretical intersection of the FOV field of view of two cameras. In order to ensure that the objects are effectively identified, the field of view boundary formed by the FOV of two adjacent cameras partially overlaps, and the ratio of the overlapping width dimension to the field of view width dimension formed by the FOV of two adjacent cameras is within the range of 5% to 10%.

[0064] like Figure 6 As shown, three high-definition industrial cameras 41 are arranged on the ceiling assembly 40. After the positions of the industrial cameras are determined, the positions, quantities and sizes of the fill lights need to be comprehensively arranged around the industrial cameras, such as Figure 6 As shown, three fill lights 42 are provided. Figure 7 Shown is a schematic diagram of the FOV field of view corresponding to three high-definition industrial cameras 41.

[0065] The main factors considered in the arrangement of the fill light in the embodiment of the present application include:

[0066] The fill light is arranged on the bottom surface of the ceiling assembly, and the lighting direction is facing the operating table; the fill light should use a flat diffusion plate with high transmittance, high diffusion and high haze characteristics to transform the point light source into a soft and uniform surface light source.

[0067] The area of ​​the diffuser plate of the fill light should be as large as possible to improve the uniformity of light on the work surface. In reality, due to the position constraints of the industrial camera, it is impossible to achieve a completely integrated diffuser plate, and the diffuser plate of the fill light may be divided into several non-continuous parts by the industrial camera. It has been verified experimentally that the ratio of the total coverage area of ​​the diffuser plates of all fill lights to the area of ​​the work surface is not less than the set ratio threshold, such as not less than 25%, which can meet the uniformity of light on the work surface.

[0068] For several non-continuous fill lights, the length-to-width ratio of a single fill light diffuser should be within the range of 1 to 2.5, that is, a smaller length-to-width ratio should be maintained. The larger the length-to-width ratio, the more the surface light source tends to be a line light source, affecting the uniformity of the illumination on the work surface.

[0069] Fill lights should be arranged around industrial cameras as much as possible, and the distance between the diffuser and the industrial camera should be within 80mm; the closer the distance, the more light reflected from the product into the camera will be captured by the camera lens in a nearly vertical manner (close to a 0° incident angle), thereby reducing local reflections caused by large-angle oblique reflections.

[0070] The embodiment of the present application arranges the fill light according to the above-mentioned fill light arrangement scheme, which can reduce the difference in illumination between the center and edge of the operating table, improve the overall uniformity, and take pictures of the products with uniform brightness and darkness without local overexposure, thereby providing high-quality image data for algorithm intelligent recognition.

[0071] For example, Figure 8 As shown, the area specification of the fill light is 300mm*300mm, three high-definition industrial cameras 41 are arranged, and four fill lights 42 are arranged around the high-definition industrial cameras 41. Fig. 9 As shown, the area specification of the fill light is 600 mm*300 mm, four high-definition industrial cameras 41 are arranged, and two fill lights 42 are arranged around the high-definition industrial cameras 41.

[0072] The fill light scheme in the embodiment of the present application is not limited to the layouts of the above two examples, and similar fill light effects can also be achieved by adopting other implementation schemes that conform to the above fill light layout design ideas.

[0073] In the embodiment of the present application, the side box assembly 30 is a single-side arm assembly, such as Fig.10As shown, a top support beam 31 extends horizontally from the top of the side box assembly 30, one end of the top support beam 31 is fixedly connected to the body of the side box assembly 30, and the other end of the top support beam 31 is fixedly connected to the ceiling assembly. In the embodiment of the present application, a fastening screw 32 is provided above the side box assembly 31, and the fastening screw 22 is fixedly connected to the top support beam 31.

[0074] In the embodiment of the present application, the top supporting beam 31 is located at the inner top of the side box assembly 30. When one end is fixed to the main body of the side box assembly 30, the fixing method that can be adopted is to connect it by welding and fastening screws 32, and solidify it as a part of the side box assembly. The other end is connected and fixed to the ceiling assembly, thereby supporting the cantilever end of the ceiling assembly 30 and bearing the load.

[0075] like Fig.12 As shown, it is a schematic diagram of the ceiling assembly 30 in the embodiment of the present application after being fixed to the side box assembly through the top supporting beam 31. The high-definition industrial camera and the fill light are arranged inside the box of the ceiling assembly. In the embodiment of the present application, the volume of the ceiling is effectively reduced by reasonably and compactly arranging the industrial camera and the fill light. At the same time, the ceiling box is made of aluminum alloy, which effectively reduces the weight of the ceiling, thereby realizing a single-sided cantilever column-free design of the ceiling, eliminating the supporting columns, which not only expands the user's countertop operating space, but also improves the product's aesthetics.

[0076] In some possible embodiments, Fig.11 and Fig.13 As shown, the ceiling assembly 40 includes a fixing member 43 located at the upper part of the box structure of the ceiling assembly and fixedly connected to two side surfaces of the ceiling assembly;

[0077] The fixing member 43 includes a first set of screws 431 and a second set of screws 432;

[0078] The end surface of the first set of screws 431 is in contact with the top supporting beam 31 below, and the distance between the ceiling assembly 30 and the top supporting beam 31 is adjusted by controlling the first set of screws 431 to be screwed into position, so as to drive the adjustment of the height of the ceiling assembly 30 in the vertical direction;

[0079] The end surface of the second set of screws 432 directly passes through the top supporting beam 31 below, and the second set of screws 432 and the top supporting beam 31 are fastened by nuts.

[0080] In the embodiment of the present application, the first set of screws 431 can adjust the height of the ceiling assembly in the vertical direction to ensure that the height of the ceiling assembly from the operating table is always within the design allowable range, and prevent the ceiling cantilever end from fatigue deformation and falling due to transportation or long-term use, thereby causing the focus range of the industrial camera to shift. The second set of screws 432 is used to tighten in the horizontal direction to prevent shaking and shifting. The first set of screws 431 includes at least one screw, and exemplarily, it can include 2 screws, and the second set of screws 432 includes at least one screw, and exemplarily, it can include 2 screws.

[0081] In the embodiment of the present application, the specific method of adjusting the first set of screws 431 and the second set of screws 432 is as follows: Fig.14 As shown, it mainly includes:

[0082] Step 1401, vertically adjust the end surface of the first set of screws to contact the top support beam below, and by controlling the screwing position, the distance between the ceiling and the top support beam can be adjusted;

[0083] Step 1402, after passing the second set of screws directly through the top support beam below, fasten it to the top support beam through nuts to achieve effective fixation in the horizontal direction to prevent shaking and displacement.

[0084] Based on the same inventive concept, the embodiment of the present application also provides a commodity inspection system, such as Fig.15 As shown, including:

[0085] The above-mentioned commodity inspection station device 1501 provided in the embodiment of the present application includes: an inspection station body, which adopts a box structure, and the interior is used to place or connect a control device; an operating table, which is located on the top of the inspection station body and includes a commodity placement area; a side box assembly, which is vertically fixed to the inspection station body and vertically connected to the ceiling assembly, adopts a box structure, and the interior is used to place component equipment for interacting with the user and identifying the identity, and the component equipment is connected to the control device; a ceiling assembly, which adopts a box structure and is vertically connected to the side box assembly, and the interior of the box is used to place at least one light source fill light and at least one camera, and the camera is connected to the control device and is used to collect images of commodities, and multiple fill lights are arranged around a camera in a surrounding arrangement;

[0086] The server 1502 is connected to the control device of the commodity inspection station device and is used to communicate with the control device to perform commodity inspection.

[0087] The specific implementation method of the above-mentioned commodity inspection station equipment refers to the description of the above-mentioned embodiment, which will not be repeated here. The commodity inspection station equipment is connected to the server through the network. The above-mentioned commodity inspection station equipment is used to take pictures of the commodities to be inspected on the supervision table, identify the images obtained by the pictures to obtain commodity information, communicate with the server to obtain the commodity information in the database, and match the identified commodity information with the commodity information in the database. When it is determined that there is matching commodity information in the database, the commodity inspection is passed.

[0088] In view of the customs inspection business of goods carried by cross-border passengers, this application proposes a commodity inspection table device, which uses machine vision technology to realize intelligent batch identification, counting and inspection of goods carried by passengers, effectively solving the time-consuming, labor-intensive and inefficient problems of manual inspection by customs. By reasonably arranging high-definition industrial cameras and surface light source fill lights above the equipment, the illumination and overall uniformity of the light source on the operating table can be enhanced, the interference of ambient light can be reduced, the local overexposure during the shooting process can be effectively suppressed, the quality of pictures taken by industrial cameras can be improved, and the intelligent identification effect of goods can be ensured.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A commodity inspection station device, characterized in that: include: The main body of the inspection station adopts a box structure, and the interior is used to place or connect control equipment; An operating table, located on the top of the inspection table body, including a commodity placement area; The side box assembly is vertically fixed on the inspection platform body and vertically connected to the ceiling assembly, adopts a box structure, and is used to place component equipment for interaction and identity recognition with the user, and the component equipment is connected to the control device; The ceiling assembly adopts a box structure and is vertically connected to the side box assembly. The interior of the box is used to place at least one light source fill light and at least one camera. The camera is connected to the control device and is used to capture images of the goods. Multiple fill lights are arranged around a camera in a surrounding arrangement.

2. The device according to claim 1, characterized in that The operating table also includes a bill identification area. The structure of the bill identification area is that a transparent material pressure plate is embedded in the operating table in the form of a hidden damping shaft, and the bill identification area is flush with the operating table.

3. The device according to claim 1, characterized in that The side box assembly is a single-sided arm-type assembly, and a top supporting beam extends horizontally from the top of the side box assembly. One end of the top supporting beam is fixedly connected to the side box assembly body, and the other end of the top supporting beam is fixedly connected to the ceiling assembly.

4. The device according to claim 3, characterized in that One end of the top supporting cross beam is fixedly connected to the side box assembly body by welding or fastening screws or curing to become a part of the side box assembly body.

5. The device according to claim 3, characterized in that The ceiling assembly includes a fixing member located at the upper part of the box structure of the ceiling assembly and fixedly connected to two side surfaces of the ceiling assembly; The fixing member includes a first set of screws and a second set of screws; The end faces of the first set of screws are in contact with the top supporting beam below, and by controlling the screwing position of the first set of screws, the distance between the ceiling assembly and the top supporting beam is adjusted to drive the adjustment of the height of the ceiling assembly in the vertical direction; The end faces of the second set of screws directly pass through the top supporting beam below, and the second set of screws are fastened to the top supporting beam by nuts.

6. The device according to claim 2, characterized in that The commodity placement area includes at least two commodity placement sub-areas, the bill recognition area overlaps with the commodity placement area, and the ceiling component is arranged with multiple cameras respectively aimed at each commodity placement sub-area and a camera aimed at the bill recognition area, wherein the FOV field of view boundaries of two adjacent cameras partially overlap, and the FOV field of view boundaries of all cameras cover the commodity placement area.

7. The device according to claim 6, characterized in that The field of view boundary formed by the field of view angles FOV of all the cameras covers the commodity placement area and does not exceed a set ratio threshold of the commodity placement area; The boundary of the fields of view formed by the FOVs of two adjacent cameras partially overlaps, and the ratio of the width of the overlap to the width of the fields of view formed by the FOVs of the two adjacent cameras is in the range of 5% to 10%.

8. The device according to claim 1, characterized in that The fill light adopts a flat diffuser plate, and the ratio of the length to the width of a single flat diffuser plate is within the range of 1 to 2.

5.

9. The device according to claim 1, characterized in that The ratio of the total area of ​​the diffusion plates of the plurality of fill lights to the area of ​​the operating table is not less than 25%; Any fill light should be within 80mm of the nearest camera.

10. A commodity inspection system, characterized in that: include: The commodity inspection station equipment according to any one of claims 1 to 9; The server is connected to the control device of the commodity inspection station device and is used to communicate with the control device to perform commodity inspection.

Images