Intelligent goods shelf with automatic replenishment reminding function

Abstract

The invention belongs to the technical field of intelligent supply, and discloses an intelligent goods shelf with an automatic replenishment reminding function, which comprises a three-dimensional goods shelf main body, a size analysis device, a central controller and a replenishment reminding terminal, the size analysis device is rigidly mounted on the bottom surface and the side vertical surface of each layer of laminate, the size analysis device comprises a bottom laser ranging array and a lateral infrared sensor array, the bottom laser ranging array vertically scans the outline of the bottom surface of the cargo, and the lateral infrared sensor array horizontally scans the outline of the side surface of the cargo; the central controller is fixed in the stand column of the goods shelf body and connected with the inventory database. The goods shelf can be flexibly adjusted according to the packaging sizes of different goods, the storage space of the goods shelf is fully utilized, then the limitation that a traditional goods shelf passively adapts to fixed parameters is broken through, and the flexibility and efficiency of a warehousing system are improved.

Description

Technical Field

[0001] The present invention relates to the field of intelligent supply, and more particularly to an intelligent shelf with an automatic replenishment reminder function. Background Art

[0002] In the field of smart warehousing and new retail, three-dimensional shelves are the core equipment for improving space utilization, and their inventory management efficiency directly affects the warehousing operating costs.

[0003] Existing smart shelf systems generally adopt fixed capacity threshold logic when designing. That is, the maximum storage quantity on each layer is preset. For example, each layer can accommodate a fixed number of goods. This design does not take into account the diversity of goods packaging sizes:

[0004] When storing small-sized goods, the fixed threshold will cause the reserved space between the goods to be too large, resulting in insufficient actual space utilization; when storing large-sized goods, the fixed threshold may cause the goods to be unable to adapt due to size mismatch, and manual adjustment of the shelves or splitting of the goods will be required, which will increase operating costs.

[0005] Therefore, the existing shelf system has become a key bottleneck restricting the improvement of warehousing efficiency due to the defect that the fixed capacity threshold cannot dynamically adapt to the size of the goods. There is an urgent need for an intelligent shelf solution that can dynamically calculate the capacity based on the size of the goods. Summary of the Invention

[0006] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a smart shelf with an automatic replenishment reminder function. The bottom laser ranging array installed on the bottom surface of the shelf vertically scans the bottom surface contour of the goods, combined with the lateral infrared sensor array on the side elevation of the shelf horizontally scans the side contour, and simultaneously obtains the packaging size D of a single piece of goods along the length of the shelf. By dynamically calculating the maximum capacity, it adapts to different cargo sizes, which can solve the problem that a fixed capacity threshold cannot dynamically adapt to cargo size.

[0007] The technical solution of the present invention is as follows: an intelligent shelf with an automatic replenishment reminder function, comprising a three-dimensional shelf body, a size analysis device, a central controller and a replenishment reminder terminal;

[0008] The main body of the three-dimensional shelf is composed of multiple layers of horizontal layers fixedly assembled;

[0009] The dimensional analysis device is rigidly mounted on the bottom and side elevations of each layer of the board. The dimensional analysis device includes a bottom laser ranging array and a side infrared sensor array. The bottom laser ranging array vertically scans the bottom contour of the cargo; the side infrared sensor array horizontally scans the side contour of the cargo.

[0010] The central controller is fixed inside the column of the shelf body and connected to the inventory database;

[0011] The replenishment reminder terminal is connected to the central controller through a wireless communication module to establish a two-way data channel;

[0012] in:

[0013] Each layer has a fixed length and is limited to accommodating only the same type of goods with the same packaging size.

[0014] The size analysis device is connected to the central controller by signal.

[0015] Preferably, a weight sensor is embedded at the bottom of each layer, adopting a cantilever beam weighing structure and symmetrically distributed at the four corners, and is connected to the central controller via a signal line.

[0016] Preferably, a pressure sensor array is laid on the surface of each layer, the array is composed of pressure-sensitive units distributed in a rectangular grid, the grid density is ≥4 units / square meter, and the surface is covered with an anti-slip and wear-resistant coating.

[0017] Preferably, the smart shelf also includes a safety distance adjustment actuator, which includes a liftable shelf bracket, the shelf bracket is slidably connected to the shelf body, and the shelf bracket responds to instructions from the central controller to drive the shelf to rise and fall.

[0018] Preferably, the safety distance adjustment actuator further includes a swing assembly, and the swing assembly includes:

[0019] A drive shaft, the drive shaft being rotatably connected to the shelf body;

[0020] A fixed sleeve, the fixed sleeve is fixedly installed on the outer wall of the drive shaft;

[0021] A swing arm, the swing arm is fixedly mounted on the outer wall of the fixed sleeve;

[0022] A first rotating shaft, the first rotating shaft is fixedly mounted on the end of the swing arm;

[0023] A lifting arm, the lifting arm being rotatably connected to an end portion of the first rotating shaft;

[0024] The second rotating shaft is fixedly installed at the end of the lifting arm.

[0025] Preferably, the safety distance adjustment actuator further includes a lifting assembly, and the lifting assembly includes:

[0026] A fixed plate, the fixed plate is fixedly installed on the outer wall of the shelf body;

[0027] Guide rod, the guide rod is fixedly installed on the top of the fixed plate;

[0028] The sliding sleeve is slidably mounted on the outer wall of the guide rod;

[0029] Support block, which is fixedly mounted on the top of the sliding sleeve;

[0030] The connecting ear is fixedly mounted on the outer wall of the sliding sleeve and is rotatably connected to the second rotating shaft.

[0031] Preferably, the safety distance adjustment actuator further includes a drive assembly, which includes:

[0032] Supporting machine base, the supporting machine base is fixedly installed on the outer wall of the shelf body;

[0033] The stepper motor is fixedly mounted on the support base, and the output end of the stepper motor is fixedly connected to the drive shaft.

[0034] Preferably, the central controller performs the following operations:

[0035] S1. Obtain the packaging size D and shelf length L of a single piece of cargo;

[0036] S2, according to the formula Calculate the maximum capacity, where S is the preset safety distance;

[0037] S3, real-time monitoring of the current quantity N of goods;

[0038] S4. When condition N is met <N max Generate a replenishment signal when

[0039] S5. Send a message containing the missing quantity △N=N to the replenishment reminder terminal max -N's replenishment signal.

[0040] Preferably, the central controller performs a weight calibration process:

[0041] C1. Record the total weight W when placing the goods for the first time 总 and the number N 初 ;

[0042] C2. Calculate standard weight

[0043] C3. When the weight change value |△W|≥W is detected 标 Or when the contour change rate is >5%;

[0044] C4. Trigger re-measurement of packaging dimension D.

[0045] Preferably, the central controller performs the safety distance adjustment process:

[0046] D1. Obtain the actual distance S′ between adjacent goods through the pressure sensor array;

[0047] D2. When S'\<0.9S, control the horizontal spacing adjustment mechanism to push the partition plate to increase S' to the target value;

[0048] D3. When S′\>1.2S, control the horizontal spacing adjustment mechanism to retract the partition plate and reduce S′ to the target value.

[0049] Optimized replenishment signal hierarchical processing flow:

[0050] P1, when N≤0.3N max Generate emergency replenishment instructions;

[0051] P2, when 0.3N max <N≤0.7N max Generate regular replenishment instructions;

[0052] P3, when N>0.7N max Only inventory data is updated.

[0053] Preferably, the central controller performs the predictive analysis process:

[0054] A1. Dynamically adjust the safety distance S based on historical sales data, reducing the S value for high-turnover goods;

[0055] A2. According to the formula Predicting replenishment time;

[0056] Where k is the holiday correction coefficient, V 日均 is the average daily sales volume;

[0057] A3、Send in advance including T 补 replenishment plan.

[0058] Preferably, the dimensional analysis device performs a three-dimensional scanning process:

[0059] M1, synchronous activation of the bottom laser array and the side infrared array;

[0060] M2. Obtain the preset height H of the goods from the inventory database;

[0061] M3. Calculate the packaging dimension D along the length direction of the layer based on the bottom profile, side profile and preset height H.

[0062] Preferably, the smart shelf further includes a horizontal spacing adjustment mechanism installed on each shelf, including:

[0063] Transverse guide rails, fixed to the surface of the shelf;

[0064] An electric push rod, slidably connected to the transverse guide rail;

[0065] A partition plate is fixed to the output end of the electric push rod;

[0066] Wherein: the electric push rod responds to the instruction of the central controller to push the partition plate to adjust the horizontal distance S′ between adjacent goods.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] In the present invention, by making it clear that each layer of shelf only accommodates the same kind of goods with the same packaging size, it is avoided that goods of different sizes are mixed and the resulting confusion in capacity calculation is ensured, thereby ensuring the pertinence of size analysis and capacity calculation; the bottom surface contour of the goods is vertically scanned by the bottom laser ranging array installed on the bottom surface of the shelf, and the side contour is horizontally scanned by the lateral infrared sensor array on the side facade of the shelf, so as to synchronously obtain the packaging size of a single piece of goods along the length direction of the shelf, and provide parameters for dynamic capacity calculation; then, the maximum holding capacity is dynamically calculated to adapt to different cargo sizes; finally, the actual spacing between adjacent cargoes is monitored in combination with the pressure sensor array, and the horizontal spacing adjustment mechanism is used to drive the partition plate to dynamically adjust the spacing, so as to further adapt to the storage needs of cargo of different sizes, thereby solving the problem that the traditional fixed capacity threshold cannot adapt to the diversity of cargo sizes, and improving storage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0070] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0071] Figure 2 This is a schematic diagram of the partial structure of the safety distance adjustment actuator of the present invention;

[0072] Figure 3 It is a partial structural diagram of the horizontal spacing adjustment mechanism of the present invention;

[0073] Figure 4 This is a replenishment determination flow chart of the present invention;

[0074] Figure 5 is a weight calibration flow chart of the present invention;

[0075] Figure 6 This is a safety distance adjustment flow chart of the present invention;

[0076] Figure 7 This is a flow chart of the hierarchical processing of replenishment signals according to the present invention;

[0077] Figure 8 This is a flow chart of the prediction analysis of the present invention;

[0078] Figure 9 This is a flow chart of the dimension measurement of the present invention.

[0079] Explanation of the numbers in the figure: 1. Shelf body; 11. Shelf; 2. Dimension analysis device; 21a. Bottom laser ranging array; 21b. Side infrared sensor array; 3. Central controller; 4. Replenishment reminder terminal; 5. Weight sensor; 6. Pressure sensor array; 7. Safety distance adjustment actuator; 701. Shelf bracket; 702. Support base; 703. Stepper motor; 704. Drive shaft; 705. Fixed sleeve; 706. Swing arm; 707. First rotating shaft; 708. Lifting arm; 709. Second rotating shaft; 710. Fixed plate; 711. Guide rod; 712. Sliding sleeve; 713. Support block; 714. Connecting ear; 8. Horizontal spacing adjustment mechanism; 801. Horizontal guide rail; 802. Electric push rod; 803. Partition plate. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, 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 part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The specific embodiments of the present invention are described in detail below in conjunction with the drawings in the specification.

[0081] Smart shelves with automatic replenishment reminders are a type of goods storage shelf that integrates technologies such as the Internet of Things, sensors, and data analysis to achieve real-time monitoring of the inventory of goods on the shelves, and automatically issues replenishment reminders when the inventory falls below a preset threshold.

[0082] The existing shelving system's fixed capacity thresholds prevent it from dynamically adapting to cargo size, a drawback that has become a key bottleneck restricting improved warehousing efficiency. To address this issue, we have invented an adaptive smart shelf that addresses the inability of traditional fixed capacity thresholds to dynamically adapt to cargo size diversity, thereby improving warehousing efficiency.

[0083] like Figure 1 As shown, a smart shelf with automatic replenishment reminder function includes a three-dimensional shelf body 1, a size analysis device 2, a central controller 3 and a replenishment reminder terminal 4;

[0084] The three-dimensional shelf body 1 is composed of multiple horizontal layers 11 fixedly assembled. The layers 11 are made of 6061-T6 aluminum alloy and have a length of L = 1200mm ± 0.5mm.

[0085] The dimension analysis device 2 is rigidly mounted on the bottom and side surfaces of each layer 11. The dimension analysis device 2 includes a bottom laser ranging array 21a and a side infrared sensor array 21b.

[0086] The bottom laser ranging array 21a vertically scans the bottom contour of the cargo, with a wavelength of 905nm and a scanning accuracy of ±1mm. The bottom laser ranging array 21a is installed 15mm away from the shelf. The bottom laser ranging array 21a is installed obliquely below the side edge of the shelf 11, scanning the bottom contour of the cargo at an upward angle of 15°. The wavelength is 905nm and the scanning accuracy is ±1mm.

[0087] The laser ranging array is an integrated laser ranging sensor with multiple arrays distributed and installed. The integrated laser ranging sensor model is VL53L0X, which integrates the transmitting unit and the receiving unit. The transmitting and receiving units are encapsulated in a single chip, and the coaxial structure is used to ensure the coincidence of the optical paths.

[0088] The side infrared sensor array 21b horizontally scans the side profile of the goods, with a wavelength of 905nm and a horizontal viewing angle of 120°; the side infrared sensor array 21b is embedded in the shelf column;

[0089] The central controller 3 is fixed inside the column of the shelf body 1 and connected to the inventory database;

[0090] The replenishment reminder terminal 4 is connected to the central controller 3 via a wireless communication module to establish a two-way data channel;

[0091] in:

[0092] Each layer 11 has a fixed length and is limited to accommodating only the same type of goods with the same packaging size.

[0093] The size analysis device 2 is connected to the central controller 3 via a signal connection.

[0094] A weight sensor 5 is embedded at the bottom of each layer 11 , which adopts a cantilever beam weighing structure and is symmetrically distributed at the four corners, and is connected to the central controller 3 via a signal line.

[0095] A pressure sensor array 6 is laid on the surface of each layer 11. The pressure sensor array 6 is composed of pressure-sensitive units distributed in a rectangular grid with a grid density of ≥4 units / square meter, and the surface is covered with an anti-slip and wear-resistant coating.

[0096] like Figure 1 and Figure 2 As shown, the smart shelf also includes a safety distance adjustment actuator 7, and the vertical distance between layers is adjusted by the safety distance adjustment actuator 7. The safety distance adjustment actuator 7 includes a liftable shelf bracket 701, and the shelf bracket 701 is slidably connected to the shelf body 1. The shelf bracket 701 responds to the instructions of the central controller 3 to drive the shelf 11 to rise and fall.

[0097] The safety distance adjustment actuator 7 further includes a swing assembly, a lifting assembly and a driving assembly.

[0098] The swing assembly includes a drive shaft 704, a fixed sleeve 705, a swing arm 706, a first rotating shaft 707, a lifting arm 708 and a second rotating shaft 709. The drive shaft 704 is rotatably connected to the shelf body 1, the fixed sleeve 705 is fixedly installed on the outer wall of the drive shaft 704, the swing arm 706 is fixedly installed on the outer wall of the fixed sleeve 705, the first rotating shaft 707 is fixedly installed on the end of the swing arm 706, the lifting arm 708 is rotatably connected to the end of the first rotating shaft 707, and the second rotating shaft 709 is fixedly installed on the end of the lifting arm 708.

[0099] The lifting assembly includes a fixed plate 710, a guide rod 711, a sliding sleeve 712, a support block 713 and a connecting ear 714. The fixed plate 710 is fixedly installed on the outer wall of the shelf body 1, the guide rod 711 is fixedly installed on the top of the fixed plate 710, the sliding sleeve 712 is slidably mounted on the outer wall of the guide rod 711, the support block 713 is fixedly installed on the top of the sliding sleeve 712, the connecting ear 714 is fixedly installed on the outer wall of the sliding sleeve 712, and the connecting ear 714 is rotatably connected to the second rotating shaft 709.

[0100] The driving assembly includes a support base 702 and a stepper motor 703 . The support base 702 is fixedly mounted on the outer wall of the shelf body 1 . The stepper motor 703 is fixedly mounted on the support base 702 . The output end of the stepper motor 703 is fixedly connected to the driving shaft 704 .

[0101] The shelf lifting mechanism 7 is used to adjust the vertical space when setting the initial floor height or changing the type of cargo, and has nothing to do with the adjustment of the horizontal safety distance S.

[0102] When the central controller 3 issues an instruction to increase the S value, the stepper motor 703 drives the driving shaft 704 to rotate, the driving shaft 704 drives the fixed sleeve 705 to rotate, the fixed sleeve 705 drives the swing arm 706 to swing, the swing arm 706 drives the lifting arm 708 to move through the first rotating shaft 707, and the lifting arm 708 pushes the connecting ear 714 to move through the second rotating shaft 709, so that the connecting ear 714 drives the sliding sleeve 712 to slide along the guide rod 711, thereby driving the layer bracket 701 to rise.

[0103] like Figure 1 and Figure 3 As shown, the smart shelf also includes a horizontal spacing adjustment mechanism 8, which is installed on each layer 11 and includes a transverse guide rail 801, an electric push rod 802 and a partition plate 803; the transverse guide rail 801 is fixed to the surface of the layer 11; the electric push rod 802 is slidably connected to the transverse guide rail 801; the partition plate 803 is fixed to the output end of the electric push rod 802;

[0104] Wherein: the electric push rod 802 responds to the instruction of the central controller 3 to push the partition plate 803 to adjust the horizontal distance S′ between adjacent goods

[0105] The transverse guide rails 801 of the horizontal spacing adjustment mechanism 8 are installed parallel to the length direction of the layer board, and the spacing between the guide rails is adapted to the width of the cargo;

[0106] The electric push rod 802 has a built-in displacement sensor, which provides real-time feedback of the position of the partition plate 803 to the central controller 3;

[0107] The partition plate 803 is an L-shaped stainless steel plate with a vertical portion height of ≤50 mm to avoid blocking the lateral infrared scanning.

[0108] like Figure 4 As shown, the central controller 3 performs the following operations:

[0109] S1. Obtain the packaging size D and shelf length L of a single piece of cargo;

[0110] S2, according to the formula Calculate the maximum capacity,

[0111] Numerator LS: The total length of the shelf minus the safety distance reserved at the starting end (no spacing is required before the first cargo);

[0112] Denominator D+S: space occupied by each cargo (including safety interval);

[0113] +1: counts towards the first shipment;

[0114] S3, real-time monitoring of the current quantity N of goods;

[0115] S4. When condition N is met <N max Generate a replenishment signal when

[0116] S5, send a message containing the missing quantity △N=N to the replenishment reminder terminal 4 max -N's replenishment signal.

[0117] The above maximum capacity calculation must meet the following requirements:

[0118] a) No safety distance is required at the starting end, and a distance S is reserved at the end;

[0119] b) When the remaining space (LS) is less than the length of one cargo item D, only one item can be accommodated;

[0120] c) Other cases calculate.

[0121] like Figure 5 As shown, the central controller 3 performs the weight calibration process:

[0122] C1. Record the total weight W when placing the goods for the first time 总 and the number N 初 ;

[0123] C2. Calculate standard weight Where W 标 is the standard weight of a single piece of cargo (kg), W 总 is the total weight of the first placed cargo (kg); N 初 The quantity of goods placed for the first time (pieces);

[0124] C3. When the weight change value |△W|≥W is detected 标 Or when the contour change rate is >5%;

[0125] C4. Trigger re-measurement of packaging dimension D.

[0126] like Figure 6 As shown, the central controller 3 performs the safety distance adjustment process:

[0127] D1, obtaining the actual distance S′ between adjacent goods through the pressure sensor array 6;

[0128] D2. When S′<0.9S, the horizontal spacing adjustment mechanism 8 is controlled to push the partition plate 803 to increase S′ to the target value;

[0129] D3. When S′>1.2S, the horizontal spacing adjustment mechanism 8 is controlled to retract the partition plate 803 to reduce S′ to the target value.

[0130] like Figure 7 As shown in the figure, the replenishment signal hierarchical processing flow:

[0131] P1, when N≤0.3N max Generate emergency replenishment instructions;

[0132] P2, when 0.3N max <N≤0.7N max Generate regular replenishment instructions;

[0133] P3, when N>0.7N max Only inventory data is updated.

[0134] like Figure 8 As shown, the central controller 3 performs the prediction analysis process:

[0135] A1. Dynamically adjust the safety distance S based on historical sales data, reducing the S value for high-turnover goods;

[0136] A2. According to the formula Predicting replenishment time;

[0137] Among them, T 补Replenishment countdown (hours), value range: T 补 > 0

[0138] ΔN Quantity of missing goods (pieces), value range: ΔN > 1

[0139] K Holiday correction factor (dimensionless), value range: 0.8 ≤ k ≤ 3.0

[0140] V 日均 Daily average sales volume (pieces / day), value range: V 日均 > 0

[0141] Where k is the holiday correction factor, V 日均 is the daily average sales volume;

[0142] A3. Send the replenishment plan containing T 补 in advance.

[0143] As Figure 9 shown, the dimension analysis device 2 executes a three-dimensional scanning process:

[0144] M1. Synchronously activate the bottom laser array 21a and the lateral infrared array 21b;

[0145] M2. Obtain the preset height H of the goods from the inventory database;

[0146] M3. Calculate the packaging dimension D along the length direction of the shelf based on the bottom contour, side contour and preset height H.

[0147] Step 1: Initialization of goods shelving

[0148] 1. Place the same type and size of goods on each layer;

[0149] 2. The dimension analysis device 2 scans to obtain the single-piece dimension D;

[0150] 3. The weight sensor 5 records the total weight W total and the quantity N initial, and calculates the standard weight W standard = W total / N initial;

[0151] 4. Retrieve the preset horizontal safety distance S from the database.

[0152] Step 2: Dynamic capacity calculation

[0153] 1. If L - S < D, then N max = 1

[0154] 2. Otherwise:

[0155] Calculate

[0156] 3. Update the central controller database.

[0157] Step 3: Safety distance adjustment

[0158] 1. The pressure sensor array 6 detects the actual spacing S'.

[0159] 2. If the detected actual spacing S' < 0.9S, the control instruction causes the horizontal push rod 802 to push out the partition plate 803 to increase S' to ≥ S.

[0160] 3. If S' > 1.2S, the instruction causes the push rod to retract the partition plate to reduce S' to ≤ S.

[0161] Step Four: Weight and Dimension Calibration

[0162] When the weight change |ΔW| ≥ W standard or the profile change rate > 5%,

[0163] Rescan the package dimension D;

[0164] Update W standard and Nmax.

[0165] Step Five: Replenishment Decision

[0166] 1. Monitor the quantity of goods N in real time;

[0167] 2. If N < Nmax, calculate the shortage quantity ΔN = N max - N;

[0168] Hierarchical processing: N ≤ 0.3Nmax to the emergency replenishment instruction;

[0169] 0.3Nmax < N ≤ 0.7Nmax to the regular replenishment instruction;

[0170] 3. If N > 0.7N max To only update the inventory data.

[0171] Step Six: Prediction Optimization

[0172] 1. Dynamically adjust the S value based on historical data (reduce S for high-turnover goods);

[0173] 2. Predict the replenishment time according to the formula Predict the replenishment time;

[0174] 3. Send the replenishment plan to the terminal in advance.

[0175] Step Seven: Closed-loop Verification

[0176] 1. After replenishment is completed, re-detect N, W total, S';

[0177] 2. Update the inventory database.

[0178] In this invention, the bottom laser ranging array 21a and lateral infrared sensor array 21b in the size analysis device capture the package dimensions in real time. This dynamically calculates the maximum capacity based on the shelf length and a preset safety distance, replacing the traditional fixed capacity threshold design. As the size of the goods changes, the system automatically adjusts the available capacity, eliminating the problem of wasted space for small goods and the inability to accommodate large goods, thereby improving shelf space utilization. Furthermore, a horizontal spacing adjustment mechanism optimizes the spacing between adjacent goods in real time, reducing redundant space.

[0179] The weight sensor 5 and the pressure sensor array 6 work together to monitor the quantity of goods, and combine the dimensional analysis data to form a double check to ensure the accuracy of inventory data; the central controller 3 calculates the missing amount of replenishment and sends reminders according to the inventory ratio to avoid over-replenishment or out-of-stock and reduce invalid inventory occupancy; based on historical sales data, the safety distance and predicted replenishment time are dynamically adjusted to achieve forward-looking inventory planning and improve replenishment response efficiency.

[0180] The safety distance adjustment actuator 7 realizes dynamic adaptation of the shelf height to meet the storage requirements of goods of different heights;

[0181] The weight calibration process avoids misjudgment of capacity due to cargo deformation or placement deviation, ensuring data reliability.

[0182] The surface of the pressure sensor array 6 is covered with a non-slip and wear-resistant coating, which, combined with the partition plate design, reduces collision losses during the process of picking up and placing goods, thereby improving storage safety.

[0183] Traditional smart shelves can only monitor inventory based on a single parameter, such as weight or image, and have fixed capacity thresholds. However, this invention integrates data on cargo size, weight, and spacing through dimension scanning, capacity calculation, spacing adjustment, weight calibration, and tiered replenishment. This enables intelligent management where capacity dynamically changes with size, spacing is automatically optimized based on actual conditions, and replenishment is precisely triggered based on inventory levels. This combination of multi-sensor data collaboration and dynamic adjustment overcomes the limitations of traditional shelves, which passively adapt to fixed parameters, and improves the flexibility and efficiency of warehousing systems.

[0184] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart shelf with automatic replenishment reminder function, characterized in that: include: The three-dimensional shelf body (1) is composed of multiple horizontal layers (11) fixedly assembled; The dimensional analysis device (2) is rigidly mounted on the bottom and side surfaces of each layer (11), and comprises: The bottom laser ranging array (21a) vertically scans the bottom contour of the cargo; The side infrared sensor array (21b) horizontally scans the side profile of the cargo; A central controller (3) is fixed inside the column of the shelf body (1) and is connected to the inventory database; The replenishment reminder terminal (4) is connected to the central controller (3) via a wireless communication module to establish a two-way data channel; in: Each layer (11) has a fixed length and is limited to accommodating only the same type of goods with the same packaging size in a single layer; The size analysis device (2) is connected to the central controller (3) via signals.

2. The smart shelf with automatic replenishment reminder function according to claim 1 is characterized by: A weight sensor (5) is embedded at the bottom of each layer (11), adopts a cantilever beam weighing structure and is symmetrically distributed at four corners, and is connected to a central controller (3) via a signal line.

3. The smart shelf with automatic replenishment reminder function according to claim 2 is characterized by: A pressure sensor array (6) is laid on the surface of each layer (11), and the array: It is composed of pressure-sensitive units distributed in a rectangular grid, with a grid density of ≥ 4 units / square meter; The surface is covered with anti-slip and wear-resistant coating.

4. The smart shelf with automatic replenishment reminder function according to claim 1 is characterized by: The utility model also includes a safety distance adjustment actuator (7), which includes a liftable layer bracket (701), the layer bracket (701) is slidably connected to the shelf body (1), and the layer bracket (71) drives the layer (11) to rise and fall in response to the instruction of the central controller (3).

5. The smart shelf with automatic replenishment reminder function according to claim 4 is characterized in that: The safety distance adjustment actuator (7) further comprises a swing assembly, which comprises: A drive shaft (704), the drive shaft (704) is rotatably connected to the shelf body (1); A fixed sleeve (705), the fixed sleeve (705) is fixedly mounted on the outer wall of the drive shaft (704); A swing arm (706), the swing arm (706) is fixedly mounted on the outer wall of the fixed sleeve (705); A first rotating shaft (707), the first rotating shaft (707) is fixedly mounted on the end of the swing arm (706); A lifting arm (708), the lifting arm (708) is rotatably connected to the end of the first rotating shaft (707); The second rotating shaft (709) is fixedly mounted on the end of the lifting arm (708).

6. The smart shelf with automatic replenishment reminder function according to claim 5 is characterized by: The safety distance adjustment actuator (7) further comprises a lifting assembly and a driving assembly, wherein the lifting assembly comprises: A fixing plate (710), the fixing plate (710) is fixedly mounted on the outer wall of the shelf body (1); A guide rod (711), the guide rod (711) is fixedly mounted on the top of the fixed plate (710); A sliding sleeve (712) is slidably mounted on the outer wall of the guide rod (711); A supporting block (713) is fixedly mounted on the top of the sliding sleeve (712); A connecting ear (714), the connecting ear (714) is fixedly mounted on the outer wall of the sliding sleeve (712), and the connecting ear (714) is rotatably connected to the second rotating shaft (709); The drive components include: A support base (702), the support base (702) is fixedly mounted on the outer wall of the shelf body (1); The stepper motor (703) is fixedly mounted on the support base (702), and the output end of the stepper motor (703) is fixedly connected to the driving shaft (704).

7. The smart shelf with automatic replenishment reminder function according to claim 2 is characterized by: The central controller (3) performs the following operations: S1. Obtain the packaging size D and shelf length L of a single piece of cargo; S2, according to the formula Calculate the maximum capacity; S3, real-time monitoring of the current quantity N of goods; S4. When condition N is met <N max Generate a replenishment signal when S5, send a message containing the missing quantity △N=N to the replenishment reminder terminal (4). max -N's replenishment signal.

8. The smart shelf with automatic replenishment reminder function according to claim 2 is characterized by: The central controller (3) performs the weight calibration process: C1. Record the total weight W when placing the goods for the first time 总 and the number N 初 ; C2. Calculate standard weight C3. When the weight change value |△W|≥W is detected 标 Or when the contour change rate is >5%; C4. Trigger re-measurement of packaging dimension D.

9. The smart shelf with automatic replenishment reminder function according to claim 3 is characterized by: The central controller (3) executes the safety distance adjustment process: D1, obtaining the actual distance S′ between adjacent goods through the pressure sensor array (6); D2. When S′<0.9S, the horizontal spacing adjustment mechanism (8) is controlled to push the partition plate (803) to increase S′ to the target value; D3. When S′>1.2S, the horizontal spacing adjustment mechanism (8) is controlled to retract the partition plate (803) to reduce S′ to the target value.

10. The smart shelf with automatic replenishment reminder function according to claim 1 is characterized in that: It also includes a horizontal spacing adjustment mechanism (8) installed on each layer (11), including: A transverse guide rail (801) is fixed to the surface of the layer plate (11); An electric push rod (802) is slidably connected to the transverse guide rail (801); A partition plate (803) is fixed to the output end of the electric push rod (802); Wherein: the electric push rod (802) pushes the partition plate (803) in response to the instruction of the central controller (3) to adjust the horizontal distance S' between adjacent goods.

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