Goods location detection apparatus and shelf detection system

Abstract

A goods location detection apparatus, comprising a mounting frame (100), a controller (420), and at least two first ranging assemblies (200). Each first ranging assembly (200) is connected to the mounting frame (100), the at least two first ranging assemblies (200) are spaced apart from each other, and each first ranging assembly (200) is configured to measure the distance between the first ranging assembly (200) and a cross beam of a shelf. The controller (420) is electrically connected to all the first ranging assemblies (200), separately, and the controller (420) determines the condition of a corresponding goods location on the basis of distance values measured by all the first ranging assemblies (200). Specifically, whether the bottom surface of the goods location is horizontal can be determined on the basis of the difference between the distances measured by the first ranging assemblies (200), so as to determine whether the goods location is standard-compliant, thereby greatly improving goods location detection efficiency. Also provided is a shelf detection system.

Description

A goods location detection device and a shelf detection system

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202421507691X entitled "A goods location detection device and a shelf detection system" filed on June 28, 2024 with the China Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of logistics equipment, and in particular to a goods location detection device and a shelf detection system. BACKGROUND

[0004] The shelf is an important component in the logistics and warehousing system, and is configured to place goods.

[0005] However, due to the large number of goods locations and the small space of the goods locations, the workload is large, and the detection efficiency of workers on the goods locations is low.

[0006] DISCLOSURE

[0007] Embodiments of the present application provide a goods location detection device and a shelf detection system, which can improve the problem of low detection efficiency of workers on the goods locations.

[0008] In a first aspect, embodiments of the present application provide a goods location detection device, comprising:

[0009] a mounting frame;

[0010] a first distance measuring component, the first distance measuring component being connected with the mounting frame, and the first distance measuring component being configured to measure the distance between the first distance measuring component and the crossbeam of the shelf;

[0011] a controller, electrically connected with the first distance measuring component, and the controller being configured to determine the corresponding goods location condition according to the distance value measured by the first distance measuring component.

[0012] Optionally, the goods location detection device comprises at least two first distance measuring components, and the at least two first distance measuring components are distributed in the same straight line direction.

[0013] Optionally, the goods location detection device comprises at least three first distance measuring components, and any two first distance measuring components are located on the same straight line.

[0014] Optionally, the goods location detection device comprises at least four first distance measuring components, and the four first distance measuring components are respectively located on the vertices of a rectangular contour.

[0015] Optionally, the first distance measuring component comprises a plurality of first distance measuring modules, all the first distance measuring modules are arranged side by side on the mounting frame, and are respectively electrically connected with the controller.

[0016] Optionally, the goods location detection device further comprises a second distance measuring assembly, the second distance measuring assembly is connected with the mounting frame, the second distance measuring assembly is electrically connected with the controller, and the second distance measuring assembly is configured to measure the distance between the second distance measuring assembly and the column of the goods shelf.

[0017] Optionally, the second distance measuring assembly comprises a plurality of second distance measuring modules, all the second distance measuring modules are arranged side by side on the mounting frame and are respectively electrically connected with the controller.

[0018] Optionally, the second distance measuring module is configured as a laser distance measuring sensor, a laser range finder, an ultrasonic distance measuring sensor or a vision sensor.

[0019] Optionally, a plurality of first distance measuring assemblies are adjustably arranged on the mounting frame; or, a plurality of first distance measuring assemblies are fixedly arranged on the mounting frame.

[0020] Optionally, the mounting frame further comprises a first position adjusting assembly and / or a second position adjusting assembly, the first position adjusting assembly is configured to adjust the distance between two adjacent first distance measuring assemblies in the goods location width direction, and the second position adjusting assembly is configured to adjust the distance between two adjacent first distance measuring assemblies in the goods location depth direction.

[0021] Optionally, the first position adjusting assembly and the second position adjusting assembly each comprise a sliding member and a locking member, the sliding member is in sliding connection with the mounting frame, and the locking member is connected with the sliding member and the mounting frame, and the locking member is configured to selectively fix the sliding member on the mounting frame.

[0022] Optionally, the first distance measuring module is configured as a laser distance measuring sensor, a laser range finder, an ultrasonic distance measuring sensor or a vision sensor.

[0023] And / or, the controller is configured as a PLC control module.

[0024] Optionally, the mounting frame comprises a first rod member and a second rod member, the first rod member is fixedly connected with the second rod member, and the first distance measuring assembly is connected with the second rod member.

[0025] Optionally, a diagonal brace is arranged at the connection between the first rod member and the second rod member.

[0026] Optionally, an electrical box is fixedly arranged on the first rod member, and a power supply, a controller and a wireless module are fixedly arranged in the electrical box.

[0027] The power supply is electrically connected with the first distance measuring assembly, the controller and the wireless module respectively, the power supply is configured to supply power to the first distance measuring assembly, the controller and the wireless module, the controller is configured to control and receive the distance measured by the first distance measuring assembly from the cross beam, and the wireless module is configured to send the data or signals processed by the controller to the upper computer.

[0028] Optionally, the first distance measuring component is fixedly arranged on the second rod member; or,

[0029] The first distance measuring component is movably arranged on the second rod member.

[0030] In a second aspect, an embodiment of the present application provides a rack detection system, including a stacker and the storage location detection device of the first aspect. The storage location detection device is installed on the forks of the stacker. The stacker places the storage location detection device in each storage location of the rack in sequence to detect whether the storage locations in the rack are abnormal.

[0031] In a first aspect, an embodiment of the present application provides a storage location detection device, including a mounting frame, a controller and a first distance measuring component. The first distance measuring component is connected with the mounting frame, and is configured to measure the distance between the first distance measuring component and the crossbeam of the rack. The controller is electrically connected with the first distance measuring component. The controller judges the corresponding storage location condition according to the distance value measured by the first distance measuring component, that is, judges whether the storage location meets the standard, thereby greatly improving the detection efficiency of the storage location.

[0032] In a second aspect, an embodiment of the present application provides a rack detection system, including a stacker and the storage location detection device of the first aspect. The storage location detection device is connected with the forks of the stacker. The stacker places the storage location detection device in each storage location of the rack in sequence to detect the condition of the rack. Compared with the manual measurement method in the related art, the rack detection system greatly improves the efficiency of rack detection and calibration. In addition, since the rack detection system includes the storage location detection device in any of the above-mentioned technical solutions, the rack detection system has all the beneficial effects of the storage location detection device in any of the above-mentioned technical solutions, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are included to provide a further understanding of the present application, illustrate embodiments of the present application and together with the description given below, serve to explain the present application, but do not limit the present application.

[0034] In the drawings:

[0035] FIG. 1 is a schematic diagram of the overall structure of the storage location detection device according to an embodiment of the present application;

[0036] FIG. 2 is a top view of the storage location detection device in FIG. 1;

[0037] FIG. 3 is a side view of the storage location detection device in FIG. 1;

[0038] FIG. 4 is an electrical schematic diagram of the storage location detection device in FIG. 1.

[0039] Label explanation: 100- mounting rack; 200- first ranging assembly; 300- second ranging assembly; 400- electrical box; 500- module mounting seat; 110- first rod; 120- second rod; 130- diagonal brace; 140- first position adjustment assembly; 210- first ranging module; 220- first ranging signal; 310- second ranging module; 320- second ranging signal; 410- battery; 420- controller; 430- wireless module; 440- charging module; 141- slider. DETAILED DESCRIPTION

[0040] In order to make the technical personnel in the technical field better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should fall within the scope of protection of the present application.

[0041] In the description of the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] The inventor has found that in the prior art, a shelf includes a plurality of columns and a plurality of beams, the plurality of columns and the plurality of beams are vertically and staggered arranged to form a plurality of goods locations. After the shelf is installed, workers need to detect and calibrate each goods location in the shelf in sequence to ensure that the surfaces of the beams in the same goods location are located on the same horizontal plane.

[0045] However, due to the large number of goods locations and the small space of the goods locations, the detection efficiency of the workers on the goods locations is low.

[0046] To solve the above problems, embodiments of the present application provide a goods location detection device and a shelf detection system, which will be described in detail below in combination with the accompanying drawings.

[0047] FIG. 1 is a schematic diagram of the overall structure of the goods location detection device according to an embodiment of the present application; FIG. 2 is a top view of the goods location detection device in FIG. 1; FIG. 3 is a side view of the goods location detection device in FIG. 1; and FIG. 4 is an electrical schematic diagram of the goods location detection device in FIG. 1.

[0048] Referring to FIGS. 1-4, in a first aspect, the present application provides a goods location detection device, which includes a mounting frame 100, a first distance measuring assembly 200, and a controller 420.

[0049] The first distance measuring assembly 200 is connected to the mounting frame 100, and is configured to measure the distance between the first distance measuring assembly 200 and the beams of the shelf. The controller 420 is electrically connected to the first distance measuring assembly 200, and determines the corresponding goods location condition according to the distance value measured by the first distance measuring assembly 200, i.e., determines whether the goods location meets the standard, thereby greatly improving the detection efficiency of the goods location.

[0050] In some examples, there are at least two first distance measuring assemblies 200, each of which is connected to the mounting frame 100 and is arranged at intervals. The first distance measuring assembly 200 is configured to measure the distance between the first distance measuring assembly 200 and the beams of the shelf. The controller 420 is electrically connected to all the first distance measuring assemblies 200, and determines the corresponding goods location condition according to the distance values measured by all the first distance measuring assemblies 200. That is, the plurality of first distance measuring assemblies 200 can detect a plurality of distance values. The controller 420 calculates the vertical distance value between the corresponding distance measuring assembly and the beam according to the distance value measured by each distance measuring assembly, and then compares and calculates the plurality of vertical distance values obtained, to finally determine whether the goods location is tilted, distorted, or the like.

[0051] In some examples, the first distance measuring component 200 is arranged vertically on the mounting frame 100, and the first distance measuring signal 220 emitted by the first distance measuring component 200 is vertically directed to the cross beam, and the measurement value of the first distance measuring component 200 is the vertical distance value between the first distance measuring component 200 and the cross beam. In other examples, the first distance measuring component 200 is arranged obliquely on the mounting frame 100, and the first distance measuring signal 220 emitted by the first distance measuring component 200 is obliquely directed to the cross beam. In this case, the controller 420 calculates the vertical distance value between the first distance measuring component 200 and the cross beam according to the included angle between the first distance measuring signal 220 and the cross beam and the measurement value of the first distance measuring component 200. It should be noted that the vertical distance referred to here can be the vertical distance between the first distance measuring component 200 and the upper cross beam of the storage location, or the vertical distance between the first distance measuring component 200 and the lower cross beam of the storage location. In the embodiment of the present application, the first distance measuring component 200 is connected to the mounting frame 100, and the first distance measuring signal 220 is vertically directed downward to the cross beam of the storage location.

[0052] When the storage location detection device is provided with only one first distance measuring component 200, the first distance measuring component 200 can be installed on the fork of the stacker, and the distance of the storage location at different positions can be detected by moving the fork.

[0053] In addition, in some examples, the storage location detection device includes at least two first distance measuring components 200, and the at least two first distance measuring components 200 are arranged in the same linear direction. For example, the storage location detection device includes two first distance measuring components 200, and the two first distance measuring components 200 are arranged in the width direction of the storage location. Generally, each storage location is provided with two cross beams, and the two ends of the cross beams are mounted on the upright column. When the two cross beams need to be detected, the two first distance measuring components 200 can be arranged in the width direction of the storage location, and the length of the fork can be controlled to be extended in sequence, so that the distance values of the two ends of each cross beam can be tested in sequence. Compared with the test method of testing only one position of the cross beam, if the installation measure of one end of the cross beam occurs, the difference value is larger, and it is easier to detect, and the test is more accurate. The controller 420 obtains two vertical distance values according to the measurement values of the two first distance measuring components 200, and then compares the two vertical distance values with the set value. If the difference value is less than the set range, it is determined that the storage location meets the requirements, and if the difference value is greater than the standard, it is determined that the storage location does not meet the requirements, and further maintenance is required.

[0054] Exemplarily, the goods location detection device comprises three first distance measuring assemblies 200, and any two first distance measuring assemblies 200 are located on the same straight line. This arrangement is configured for the scenario that the bottom of the goods location is a support surface. Since three points can determine a plane, three first distance measuring assemblies 200 are arranged in this embodiment. The three first distance measuring assemblies 200 are used to measure the distance from the respective goods location crossbeam, and then to determine whether the bottom surface of the corresponding goods location is located on the same plane, so as to determine the state of the goods location. Referring to FIGS. 1 to 3, exemplarily, the goods location detection device comprises four first distance measuring assemblies 200, and the four first distance measuring assemblies 200 measure the two ends of the two crossbeams respectively. That is, after the forks of the stacker are fully extended to the position, the distances of the two crossbeams can be measured at one time.

[0055] Referring to FIGS. 1 to 3, the mounting frame 100 is configured to provide mounting positions for other components. Exemplarily, the mounting frame 100 can be designed in a frame structure, comprising a first bar 110 and a second bar 120. The first bar 110 is fixedly connected with the second bar 120 and the two bars are perpendicular to each other. As shown in FIG. 1, in some examples, the mounting frame 100 comprises one first bar 110 and two second bars 120. One end of the first bar 110 is fixedly connected with the middle position of one of the second bars 120, and the other end of the first bar 110 is fixedly connected with the middle position of the other second bar 120. The first bar 110 and the two second bars 120 form a I-shaped structure. In order to improve the stability of the connection between the first bar 110 and the second bar 120, a diagonal brace 130 is arranged at the connection between the first bar 110 and the second bar 120. In addition, exemplarily, the first bar 110, the second bar 120 and the diagonal brace 130 can all be lightweight profiles.

[0056] The first bar 110 is fixedly provided with an electrical box 400, and the electrical box 400 is fixedly provided with a power supply, a controller 420 and a wireless module 430. The power supply is electrically connected with the first distance measuring assembly 200, the controller 420 and the wireless module 430 respectively. The power supply is configured to supply power to the first distance measuring assembly 200, the controller 420 and the wireless module 430. The controller 420 is configured to control and receive the distance measured by the first distance measuring assembly 200 from the crossbeam. The wireless module 430 is configured to send the data or signals processed by the controller 420 to the upper computer. Exemplarily, the power supply can be configured as a battery 410, and the battery 410 is electrically connected with a charging module 440.

[0057] The first distance measuring assembly 200 is connected with the second rod 120. Specifically, the first distance measuring assembly 200 can be fixedly installed on the second rod 120 or movably arranged on the second rod 120. It can be understood that when the first distance measuring assembly 200 is movably arranged on the second rod 120, the measuring position of the cross beam can be changed by the position of the first distance measuring assembly 200 on the second rod 120.

[0058] In addition, in order to ensure the accuracy of the distance measured by the first distance measuring assembly 200, the first distance measuring assembly 200 comprises a plurality of first distance measuring modules 210, all of which are fixed on a module mounting seat 600, and the module mounting seat 600 is connected with the mounting frame 100. In addition, each first distance measuring module 210 is electrically connected with the controller 420, and the controller 420 controls the first distance measuring module 210 to send a first distance measuring signal 220 to measure the distance. If the distance difference measured by all the first distance measuring modules 210 meets the requirements, the controller 420 determines the vertical distance value of the position according to the average value of the distance values measured by all the first distance measuring modules 210; if the distance value measured by one of the first distance measuring modules 210 is greatly different from the distance values measured by the other first distance measuring modules 210, the distance value is discarded, and the controller 420 determines the vertical distance value of the position according to the average value of the distance values measured by all the other first distance measuring modules 210. The measurement error caused by the fact that a single distance measuring module cannot receive a reflected signal can be avoided.

[0059] In addition, the first distance measuring module 210 can be configured as a laser distance measuring sensor, a laser distance measuring instrument, an ultrasonic distance measuring sensor or a vision sensor, and the specific configuration is not limited as long as it can measure the distance between the remaining shelf cross beams. The controller 420 can be configured as a PLC (Programmable Logic Controller, Programmable Logic Controller) control module.

[0060] Continuing to refer to FIGS. 1 to 3, in some examples, the storage location detection device further comprises a second distance measuring assembly 300 connected with the mounting frame 100, and the second distance measuring assembly 300 is electrically connected with the controller 420. The second distance measuring assembly 300 is configured to measure the distance between the second distance measuring assembly 300 and the column of the shelf, so as to determine whether the horizontal direction of the storage location meets the installation requirements. In the embodiment of the application, the second distance measuring assembly 300 sends a second distance measuring signal 320 to the column of the storage location in the horizontal direction to measure the distance.

[0061] Referring to the measurement mode of the first measurement assembly 100, the second distance measurement assembly 300 can be one or multiple. In addition, the second distance measurement assembly 300 includes multiple second distance measurement modules 310, which are arranged side by side on the mounting rack 100 and are electrically connected to the controller 420, like the first distance measurement modules 210. Specifically, all the second distance measurement modules 310 are fixed side by side on the module mounting seat 600, and the second distance measurement modules 310 can also be configured as laser distance measurement sensors, laser range finders, ultrasonic distance measurement sensors or vision sensors, without specific limitation.

[0062] Continuing to refer to FIGS. 1-3, in order to facilitate adjustment of the measurement position, i.e., adjustment of the distance between two adjacent first distance measurement assemblies 200 and the position of the second distance measurement assembly 300. The mounting rack 100 further includes a first position adjustment assembly 140. The first distance measurement assembly 200 and the second distance measurement assembly 300 are both fixedly mounted on the first position adjustment assembly 140, which is connected to the mounting rack 100. Through the action of the first position adjustment assembly 140, the relative positions of the first distance measurement assembly 200 and the second distance measurement assembly 300 relative to the mounting rack 100 can be changed. Specifically, the first position adjustment assembly 140 includes a sliding member 510 and a locking member (not shown in the figure), the sliding member 510 is slidingly connected to the mounting rack 100, and the locking member is connected to the sliding member 510 and the mounting rack 100, and is configured to selectively fix the sliding member 510 on the mounting rack 100. The first distance measurement assembly 200 and the second distance measurement assembly 300 are fixedly arranged on the sliding member 510 through the module mounting seat 600. The sliding member 510 can be a sliding rail or a profile, and the locking member can be a limiting pin or a locking bolt. The operator can adjust the extension length of the sliding member 510 relative to the mounting rack 100 according to actual needs by using the locking member, thereby adjusting the positions of the first distance measurement assembly 200 and the second distance measurement assembly 300.

[0063] In a second aspect, the embodiments of the present application provide a shelf detection system, which includes a stacker and the storage location detection device of the first aspect. The storage location detection device is connected to the forks of the stacker, and the stacker places the storage location detection device in each storage location of the shelf in sequence to detect the condition of the shelf. Compared with the manual measurement method in the related art, the shelf detection system greatly improves the efficiency of shelf detection and calibration. In addition, since the shelf detection system includes the storage location detection device in any of the above-mentioned technical solutions, it has all the beneficial effects of the storage location detection device in any of the above-mentioned technical solutions, which will not be repeated here.

[0064] It is easy to understand that, based on the several embodiments provided by the present application, the embodiments of the present application can be combined, split, reorganized, etc. to obtain other embodiments, which do not exceed the protection scope of the present application.

[0065] The above detailed description of the embodiments of the present application has further explained the purposes, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific implementation of the embodiments of the present application, and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application. Industrial applicability

[0066] In summary, the embodiments of the present application provide a goods location detection device and a goods shelf detection system, which can determine whether the bottom surface of the goods location is horizontal according to the difference between the distances measured by each first distance measuring component, and further determine whether the goods location meets the standard, thereby improving the detection efficiency of the goods location.

Claims

1. A cargo location detection device, characterized in that, include: Mounting bracket (100); A first ranging component (200) is connected to the mounting bracket (100) and is configured to measure the distance between the first ranging component (200) and the crossbeam of the shelf. The controller (420) is electrically connected to the first ranging component (200). The controller (420) determines the corresponding cargo location based on the distance value measured by the first ranging component (200).

2. The cargo location detection device according to claim 1, characterized in that, The cargo location detection device includes at least two first ranging components (200), and the at least two first ranging components (200) are distributed at intervals in the same straight direction.

3. The cargo location detection device according to claim 1 or 2, characterized in that, The cargo location detection device includes at least three first ranging components (200), and any two first ranging components (200) are located on the same straight line.

4. The cargo location detection device according to any one of claims 1-3, characterized in that, The cargo location detection device includes at least four first ranging components (200), and the four first ranging components (200) are respectively located at the vertices of the rectangular outline.

5. The cargo location detection device according to any one of claims 1-4, characterized in that, The first ranging component (200) includes a plurality of first ranging modules (210), all of which are arranged side by side on the mounting bracket (100) and are electrically connected to the controller (420).

6. The cargo location detection device according to any one of claims 1-5, characterized in that, The storage location detection device further includes a second ranging component (300), which is connected to the mounting frame (100) and electrically connected to the controller (420). The second ranging component (300) is configured to measure the distance between the second ranging component (300) and the upright of the shelf.

7. The cargo location detection device according to claim 6, characterized in that, The second ranging component (300) includes a plurality of second ranging modules (310), all of which are arranged side by side on the mounting bracket (100) and are electrically connected to the controller (420).

8. The cargo location detection device according to claim 6 or 7, characterized in that, The second ranging module (310) is configured as a laser ranging sensor, a laser rangefinder, an ultrasonic ranging sensor, or a vision sensor.

9. The shelf detection device according to any one of claims 1-8, characterized in that: Multiple first ranging components (200) are adjustablely mounted on the mounting frame (100); or, multiple first ranging components (200) are fixedly mounted on the mounting frame (100).

10. The cargo location detection device according to any one of claims 1-9, characterized in that, The mounting bracket (100) further includes a first position adjustment component (140) and / or a second position adjustment component, the first position adjustment component (140) being configured to adjust the distance between two adjacent first distance measuring components (200) in the width direction of the storage space, and the second position adjustment component being configured to adjust the distance between two adjacent first distance measuring components (200) in the depth direction of the storage space.

11. The cargo location detection device according to claim 10, characterized in that, Both the first position adjustment assembly (140) and the second position adjustment assembly include a slider (510) and a locking member. The slider (510) is slidably connected to the mounting bracket (100), and the locking member is connected to the slider (510) and the mounting bracket (100). The locking member is configured to selectively fix the slider (510) onto the mounting bracket (100).

12. The cargo location detection device according to any one of claims 5-11, characterized in that, The first ranging module (210) is configured as a laser ranging sensor, a laser rangefinder, an ultrasonic ranging sensor, or a vision sensor; And / or, the controller (420) is configured as a PLC control module.

13. The cargo location detection device according to any one of claims 1-12, characterized in that, The mounting bracket (100) includes a first rod (110) and a second rod (120), the first rod (110) and the second rod (120) are fixedly connected, and the first ranging component (200) is connected to the second rod (120).

14. The cargo location detection device according to claim 13, characterized in that, A diagonal brace (130) is provided at the connection between the first member (110) and the second member (120).

15. The cargo location detection device according to claim 13 or 14, characterized in that, An electrical box (400) is fixedly installed on the first rod (110), and a power supply, the controller (420) and a wireless module (430) are fixedly installed in the electrical box (400); The power supply is electrically connected to the first ranging component (200), the controller (420), and the wireless module (430), respectively. The power supply is configured to supply power to the first ranging component (200), the controller (420), and the wireless module (430). The controller (420) is configured to control and receive the distance measured by the first ranging component (200) from the crossbeam. The wireless module (430) is configured to send the data or signals processed by the controller (420) to the host computer.

16. The cargo location detection device according to any one of claims 13-15, characterized in that, The first ranging component (200) is fixedly mounted on the second rod (120); or, The first ranging component (200) is movably mounted on the second rod (120).

17. A shelf detection system, characterized in that, The invention includes a stacker crane and a storage location detection device as described in any one of claims 1-16, wherein the storage location detection device is installed on the forks of the stacker crane, and the stacker crane sequentially places the storage location detection device at each storage location of the rack to detect whether there are any abnormalities in the storage locations of the rack.

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