Automatically controlled lending and returning tool cabinet

Abstract

The application discloses a tool cabinet capable of automatically controlling lending and returning, which comprises a cabinet body, a storage area A and a storage area B arranged in the cabinet body, cabinet doors arranged at the storage area A and the storage area B respectively, electromagnetic locks arranged at the connection between the cabinet doors and the cabinet body, an article conveying and returning mechanism arranged between the storage area A and the storage area B, a middle baffle arranged at the article conveying and returning mechanism, a top cover arranged at the top of the cabinet body, and visual cameras arranged at the inner side of the top cover, wherein the cabinet doors and the middle baffle of the top cover surround the cabinet body to form a closed whole. The tool cabinet can automatically realize the lending and returning of articles, is convenient to popularize in public places, and is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of mechanical and automatic control technology, and relates to a tool cabinet with automatic control for borrowing and returning tools. Background Technology

[0002] Traditional methods of borrowing and returning items all rely on manual operation, which is labor-intensive, costly, and requires a large area. In addition, traditional methods are not conducive to widespread adoption and therefore cannot meet people's living and working needs. If a tool cabinet that is easy to share could be designed, allowing users to borrow and return items themselves, it would greatly reduce labor and financial costs and be easy to promote and use. Summary of the Invention

[0003] The purpose of this invention is to provide an automated tool cabinet that can automatically control the borrowing and returning of items, making it easy to promote in public places and convenient to use.

[0004] The technical solution adopted in this invention is an automatic control tool cabinet for borrowing and returning tools, including a cabinet body. The cabinet body has storage area A and storage area B. Each storage area A and storage area B is provided with a cabinet door. Electromagnetic locks are provided at the connection between the two cabinet doors and the cabinet body. An item transfer and return mechanism is provided between storage area A and storage area B. A central baffle is provided at the item transfer and return mechanism. A top cover is provided on the top of the cabinet body. The two cabinet doors and the central baffle of the top cover surround the cabinet body into a closed whole. A visual camera is provided on the inside of the top cover.

[0005] The invention is further characterized by:

[0006] Storage area A includes several partitions A arranged from top to bottom, each partition A has a storage box A, and a gravity sensor is located at the bottom center of each partition A.

[0007] Storage area B includes several partitions B arranged from top to bottom, each partition B has a storage box B, and a gravity sensor is located at the bottom center of each partition B.

[0008] A retrieval port is located at the center of the central baffle, and a retrieval port baffle is installed at the retrieval port. A servo motor is connected to the center of the upper part of the retrieval port baffle via a servo motor robotic arm, and the servo motor is installed at the center of the upper side of the retrieval port. The upper part of the retrieval port baffle is held by the servo motor robotic arm.

[0009] The item transfer and return mechanism includes support bases and servo motors located at the upper and lower ends of the center of the cabinet. A driven synchronous wheel is mounted on the support base via bearings. An active synchronous wheel is coaxially mounted on the main shaft of the servo motor. The active synchronous wheel is connected to the driven synchronous wheel via a synchronous belt A. A horizontal moving mechanism is connected to the synchronous belt A. An item return mechanism is connected to the horizontal moving mechanism.

[0010] The horizontal moving mechanism includes a slide table arranged in the horizontal direction. The slide table is connected to the synchronous belt A through a clamping plate. The synchronous belt A is also provided with guide rails parallel to each other in the vertical direction on opposite sides. The two guide rails are connected to the slide table through guide rail slides. A screw is installed on the slide table in the horizontal direction. One end of the screw is connected to a lead screw module motor, and a slide is installed on the screw.

[0011] The item return mechanism includes a return platform connected to a slide, and a storage box on the return platform. A vision camera is located above the storage box. Synchronous gears are located at opposite ends of the return platform, and a synchronous belt B is located between the two synchronous gears. A gear ring is machined on the inner side of the synchronous belt B to mesh with the synchronous gears, and the outer side of the synchronous belt B is fixedly connected to the storage box. One end of one of the synchronous gears is connected to a motor.

[0012] The beneficial effects of this invention are that it consists of three parts: a hardware terminal, a WeChat terminal, and a server terminal. It can realize an intelligent lending function based on gravity sensor detection, and simultaneously realize an autonomous return function based on deep learning visual recognition and an XY motion (horizontal and vertical motion) platform. This invention optimizes resource allocation through mobile sharing in fixed scenarios, designing an intelligent shared tool cabinet that saves resources while also facilitating user access. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the tool cabinet for automatic borrowing and returning according to the present invention;

[0014] Figure 2 This is a schematic diagram of the tool cabinet with automatic borrowing and returning function of the present invention without the cabinet door;

[0015] Figure 3 This is a schematic diagram showing the open state of the tool cabinet door for automatic borrowing and returning according to the present invention;

[0016] Figure 4 This is a schematic diagram showing the installation status of storage boxes A and B in the tool cabinet for automatic borrowing and returning according to the present invention.

[0017] Figure 5 This is a schematic diagram showing the installation status of the retrieval port baffle in the tool cabinet for automatic borrowing and returning according to the present invention;

[0018] Figure 6This is a schematic diagram of the lifting component in the tool cabinet for automatic borrowing and returning according to the present invention;

[0019] Figure 7 This is a schematic diagram of the connection between the synchronous belt A and the clamping plate in the tool cabinet for automatic borrowing and returning according to the present invention;

[0020] Figure 8 This is a schematic diagram of the connection between the slide and the synchronous belt A in the tool cabinet for automatic borrowing and returning according to the present invention;

[0021] Figure 9 This is a schematic diagram of the connection between the synchronous belt B and the return platform in the tool cabinet for automatic borrowing and returning according to the present invention.

[0022] Figure 10 This is a schematic diagram of the screw installation structure in the tool cabinet for automatic borrowing and returning according to the present invention;

[0023] Figure 11 This is a schematic diagram of the connection between the synchronous gear bar and the synchronous belt B in the tool cabinet for automatic borrowing and returning according to the present invention;

[0024] Figure 12 This is a schematic diagram of the control system structure in the tool cabinet for automatic borrowing and returning according to the present invention.

[0025] In the diagram, 1. Cabinet body, 2. Top cover, 3. Cabinet door, 4. Middle baffle, 5. Storage box A, 6. Storage box B, 7. Gravity sensor, 8. Electromagnetic lock, 9. Retrieval port baffle, 10. Servo motor, 11. Servo motor robotic arm, 12. Slide table, 13. Screw, 14. Slide block, 15. Lead screw module motor, 16. Clamping plate, 17. Synchronous belt A, 18. Driven synchronous pulley, 19. Support base, 20. Servo motor, 21. Guide rail slide block, 22. Guide rail, 23. Partition plate, 24. Return platform, 25. Synchronous gear bar, 26. Vision camera, 27. Partition A, 28. Partition B, 29. Retrieval port, 30. Synchronous belt B, 31. Motor, 32. Storage box. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0027] This invention relates to an automatic tool cabinet for borrowing and returning tools, such as... Figure 1 As shown, it includes a cabinet 1, and the top of the cabinet 1 is provided with a top cover 2; as Figure 2 As shown, the cabinet 1 has several layers of partitions A27 and several layers of partitions B28 on opposite sides from top to bottom. Each layer of partition A27 and each layer of partition B28 has a gravity sensor 7 at the bottom center. Each layer of partition A27 has a storage box A5, and each layer of partition B28 has a storage box B6.

[0028] Each storage box A5 and each storage box B6 is equipped with a cabinet door 3 on the outside. Each cabinet door 3 is equipped with an electromagnetic lock 8 at the top, specifically model ZUCON506DS. A lifting and carrying assembly is located in the middle of the cabinet body 1, and the lifting and carrying assembly is enclosed inside the cabinet body 1 by a central baffle 4. The top of the cabinet door 3 is provided with a hole for inserting the electromagnetic lock 8. A central baffle 4 is located between two cabinet doors 3, and the two cabinet doors 3 and the central baffle 4 are located on the same plane of the cabinet body 1.

[0029] like Figure 3 As shown, a retrieval opening 29 is provided at the center of the central baffle 4, and a retrieval opening baffle 9 is installed at the retrieval opening 29; as Figure 4 , 5 As shown, a servo motor 10 is connected to the upper center of the loading port baffle 9 via a servo motor robotic arm 11. The servo motor 10 is installed at the upper center of the loading port 10. The upper end of the loading port baffle 9 is held by the servo motor robotic arm 11 and rotated by the servo motor 10.

[0030] like Figure 6 As shown, the lifting and carrying assembly includes a support base 19 and a servo motor 20 located at the upper and lower ends of the center of the cabinet 1. A driven synchronous wheel 18 is mounted on the support base 19 via bearings. An active synchronous wheel is coaxially mounted on the main shaft of the servo motor 20. The active synchronous wheel is connected to the driven synchronous wheel 18 via a synchronous belt A17.

[0031] like Figure 7 As shown, a horizontally arranged slide table 12 is connected to the synchronous belt A17 via a clamping plate 16. On opposite sides of the synchronous belt A17, guide rails 22 are also provided in parallel vertical directions. The two guide rails 22 are connected to the slide table 12 via guide rail slide blocks 21.

[0032] like Figure 8 As shown, a screw 13 is installed on the slide table 12 along the horizontal direction. One end of the screw 13 is connected to a lead screw module motor 15, and a slide block 14 is installed on the screw 13.

[0033] like Figure 9 As shown, a return platform 24 is connected to the slide 14, and a storage box 32 is provided on the return platform 24; a visual camera 26 is provided above the storage box 32, and the visual camera 26 is fixed on the cabinet 1.

[0034] like Figure 9 , 10As shown in Figure 11, synchronous gear rods 25 are respectively provided at opposite ends of the return platform 24, and a synchronous belt B30 is provided between the two synchronous gear rods 25. A gear ring is machined inside the synchronous belt B30, and the synchronous belt B30 is driven by meshing with the synchronous gear rods 25 through the gear ring. The outer surface of the synchronous belt B30 is fixedly connected to the storage box 32. The inside of the storage box 32 is divided into several storage areas by the partition plate 23. One end of one of the synchronous gear rods 25 is connected to a motor 31.

[0035] A QR code is affixed to cabinet door 3, and there is a hole at the top for it to engage with an electromagnetic lock, which is controlled by electromagnetic lock 8. When the user scans the code, the tool cabinet's backend receives the door-opening command, and electromagnetic lock 8 activates. (Before activation, the lock is not powered and is inserted into the pre-drilled hole on the tool cabinet door; after activation, the lock is powered on, retracts, and the door can be opened), allowing the user to pull open the door.

[0036] The control system of the tool cabinet for automatic borrowing and returning of this invention is as follows: Figure 12 As shown, the STM32 microcontroller uses the ESP8266WIFI module to implement MQTT communication with the server. When the microcontroller receives a door opening request, it controls the electromagnetic door lock relay to power on the electromagnetic lock 8. When the user closes the cabinet door 3, the microcontroller controls the electromagnetic door lock relay to de-power the electromagnetic lock 8, locking the cabinet door 3 through the electromagnetic lock 8, and sending information (which items the user took and the cabinet door status) to the server. The server stores this information in accordance with the information previously sent from the mini-program, and sends the information sent from the hardware to the WeChat mini-program for display.

[0037] The method of using the tool cabinet with automatic borrowing and returning control according to this invention is as follows:

[0038] The borrowing process is as follows:

[0039] Users select items to borrow as needed, open the mini-program on their mobile phones, and scan the QR code on the door corresponding to the medium-sized item on the mini-program's homepage. (Using the WeChat mini-program to scan the QR code on the cabinet door, the WeChat mini-program obtains the information contained in the QR code and compares it with the information in the code. If the content matches, the mini-program sends the user's information (WeChat name, WeChat ID, time, etc.) and the door opening request to the server via HTTP communication protocol. The server stores the user's information and sends the door opening request to the hardware via MQTT communication protocol. The main control microcontroller controls the electromagnetic lock 8 to open the cabinet door 3.) After the user successfully scans, the electromagnetic lock 8 activates, the tool cabinet opens, the user takes the required item, and closes the door to leave. The gravity sensor 7 under the corresponding storage box A5 or storage box B6 activates when the user takes an item, calculating the type and number of items taken based on the change in mass inside storage box A5 or storage box B6. The tool cabinet's backend server records the user's borrowing information, including the type and number of items borrowed, and the user's personal information, to prepare for the user's return of the items. Users can also view their personal borrowing information within the mini-program.

[0040] The mini-program primarily relies on WeChat and Alipay. The first time a user uses the mini-program, they will be prompted to log in with WeChat or Alipay and upload their personal information to the backend server. After a user borrows or returns an item, the borrowing and returning information will be recorded under that personal information.

[0041] It mainly utilizes WeChat's openid. Each WeChat user has a unique openid, making it easy to distinguish users based on their openid.

[0042] When a user scans the QR code to open the door, the WeChat mini-program can obtain the user's openid and send it along with information such as time and location to the server. If this is the user's first time using the smart tool cabinet, the server will create a storage unit in the database indexed by this user's openid. All information from this user's subsequent use of the cabinet will be stored in this storage unit. If the user has used the mini-program before, their openid already exists in the database; by searching for the openid, the corresponding storage unit can be easily located, and the data can be stored in that unit.

[0043] (For example: If cabinet A of the tool cabinet stores screwdrivers and cabinet B stores microcontrollers, with each screwdriver weighing 100g and each microcontroller weighing 150g, and each cabinet has a pressure sensor, the cabinets will initially tare (ignoring the weight of the cabinets on the pressure sensors) before any items are stored. Then, the user stores items in the cabinets, for example, 10 screwdrivers and 5 microcontrollers. The signals from the gravity sensors are converted into analog signals by a voltage converter, read and processed by the STM32 microcontroller, determining that the cabinet contains 1000g of screwdrivers and 750g of microcontrollers. When the user uses the cabinet, they first scan a QR code via WeChat mini-program.) When the cabinet door opens, the microcontroller records the mass of each item inside. If the user takes 3 screwdrivers and 2 microcontrollers, the signals from the gravity sensors on storage cabinets A and B will change. After the user closes the cabinet door, the main controller calculates the feedback signals from the two sensors to determine that there are 700g screwdrivers in storage cabinet A and 450g microcontrollers in storage cabinet B. The difference between the total mass before the door opened and the total mass before the door opened is divided by the mass of each individual item to determine that the user took 3 screwdrivers and 2 microcontrollers. This result is then sent to the server via the ESP8266 WIFI module. When the user returns the items, the process is similar to the borrowing process, except that the increased mass is calculated to determine the quantity of items returned.

[0044] The gravity sensor 7 relies on a voltage conversion module, which can convert the resistance signal of the gravity sensor into an analog voltage signal or a high / low level signal. The voltage signal can be read and processed by the ADC of the microcontroller. The microcontroller will convert the read analog signal to obtain the weight on the gravity sensor 7 and the number of items being held.

[0045]

[0046] The analog value ranges from 0 to 4095, which can be used to map the range of gravity sensor 7. If the analog value fed back by the module is 4096 / 2, then the actual weight of the object on gravity sensor 7 is half of the maximum range of this sensor.

[0047] The return process is as follows:

[0048] If a user wants to return an item, they need to open the mini-program on their mobile phone, open the scanning interface on the mini-program homepage, and scan the QR code on the return slot. After a successful scan, the backend server will read the user's borrowing information to determine the types and number of items the user may return. If the user has no items to return, the mini-program page will prompt that there are no items to return; if the user has items to return, the page will prompt that the return process can begin.

[0049] After the prompt, the return hatch rotates and opens under the action of the servo motor 10 and the servo motor robotic arm 11. The user places the items to be returned one by one into the space formed by the partitions 23 in the storage box 32 located at the return hatch, with one item placed between every two partitions 23. The vision camera 26 begins to identify the information of the returned items. After the user has placed the items, they click to confirm the return on the mini-program page. The return hatch closes, the mini-program page displays that the return was successful, and shows whether there are still items to be returned based on the information identified by the vision camera. The user then leaves.

[0050] After the return slot closes and the user leaves, the Jetson Nano edge computer uses the vision camera 26 to identify the items and uploads the item information and sorting to the backend server for storage. Simultaneously, the sorting information is sent to the STM32 microcontroller via serial port. The storage box 32 can hold four items, resulting in 16 possible return methods considering the return order. Upon receiving the item and sorting information from the serial port, the microcontroller calculates which of the 16 return methods is the fastest and most efficient, thus determining the optimal return path. Upon receiving the instruction, the return system begins operation according to the calculated optimal return path. Following the path, the servo motor 20 operates, the synchronous belt A17 moves, and the horizontal lead screw mechanism, under the action of the clamp and guide rail, moves vertically along the synchronous belt A17. When the horizontal lead screw mechanism reaches the designated height, the screw 13 rotates under the drive of the lead screw module motor 15, thereby driving the slide 14 to move horizontally. Since the slide 14 is fixed to the return platform 24, the movement of the slide 14 will drive the return platform 24 to move synchronously in a horizontal straight line. When the return platform 24 moves horizontally to the designated position, that is, when the item to be returned is directly above a storage box A or storage box B, the motor 31 drives the synchronous gear bar 25 to rotate. The rotation of the synchronous gear bar 25 will drive the synchronous belt B30 to move. When the synchronous belt B30 rotates a distance equal to the width of a baffle, the item to be returned between the two baffles will fall into the designated storage box A or storage box B under the action of gravity. The first item is returned. The return system will continue to use the above method to return the next item according to the optimal path until all items are completely returned. When all items are completely returned, the synchronous belt B30 rotates to reset, that is, the baffle surface faces upward; the return platform resets, that is, it moves back to the return port position. The return steps are all completed, and the system waits for the next instruction.

[0051] Here's an example illustrating the specific process of returning an item:

[0052] If a user wants to return a screwdriver to the third-layer storage box containing screwdrivers and a microcontroller to the second-layer storage box containing a microcontroller, the user needs to open the mini-program on their mobile phone, open the scanning interface on the mini-program homepage, and scan the QR code on the return slot. After successful scanning, the backend server will read the user's borrowing information, determine the type and quantity of items to be returned, and prompt the user to start the return process. After the prompt, the return slot will rotate and open under the action of servo motor 10 and servo-driven robotic arm 11. The user needs to place the screwdriver and microcontroller to be returned in one empty space and one empty space in the four spaces formed by the partition 23 inside the storage box 32. After the user places the items, the vision camera 26 begins to recognize the returned item information. After the user places the items, they click "confirm return" on the mini-program page. The return slot will then rotate and close under the action of servo motor 10 and servo-driven robotic arm 11. The return slot will close, the mini-program page will display "return successful," and will indicate whether there are still items to be returned based on the information recognized by the vision camera. The user then leaves.

[0053] After the return slot closes and the user leaves, the Jetson Nano edge computer uses the vision camera 26 to identify the items and uploads the item information and sorting to the backend server for storage. Simultaneously, the sorting information is sent to the STM32 microcontroller via serial port. The storage box 32 can hold four items, resulting in 16 possible return methods considering the return order. Upon receiving the item and sorting information from the serial port, the microcontroller calculates which of the 16 return methods is fastest and most efficient, thus determining the optimal return path. Following this path, the servo motor 20 operates, the synchronous belt A17 moves, and the horizontal lead screw mechanism, under the action of the clamp and guide rail, moves vertically along the synchronous belt A17. When the horizontal lead screw mechanism reaches the height of the storage box containing the screwdriver (the third layer), the screw 13 rotates under the drive of the lead screw module motor 15, thereby causing the slide 14 to move horizontally. Since the slide 14 is fixed to the return platform 24, the movement of the slide 14 will drive the return platform 24 to move synchronously in a horizontal straight line. When the return platform 24 moves horizontally to the position of the storage box for storing screwdrivers, that is, when the screwdriver to be returned moves directly above the storage box, the motor 31 works to drive the synchronous gear rod 25 to rotate. The rotation of the synchronous gear rod 25 will drive the synchronous belt B30 to move. When the synchronous belt B30 rotates a distance equal to the width of one baffle, the screwdriver to be returned between the two baffles will fall into the storage box for storing screwdrivers under the action of gravity, and the return of the screwdriver is completed.

[0054] After the screwdriver is returned, the return system will continue using the same method to return the microcontroller to its storage compartment, ensuring all items are returned. Once the screwdriver and microcontroller are returned, the synchronous belt B30 will rotate to reset (i.e., the auxiliary baffle will face upwards); the return platform will also reset (i.e., the movement will return to the return port position). The return process is now complete, and the system awaits the next instruction.

Claims

1. A tool cabinet for automatic control of lending and returning, characterized in that: The application relates to a cabinet, which comprises a cabinet body (1), a storage area A and a storage area B arranged in the cabinet body (1), two cabinet doors (3) arranged at the storage area A and the storage area B respectively, an electromagnetic lock (8) arranged at the connection between the two cabinet doors (3) and the cabinet body (1), an article conveying and returning mechanism arranged between the storage area A and the storage area B, a middle baffle (4) arranged at the article conveying and returning mechanism, a top cover (2) arranged at the top of the cabinet body (1), and the two cabinet doors (3) and the middle baffle (4) of the top cover (2) surrounding the cabinet body (1) into a closed whole, and a visual camera (26) arranged at the inner side of the top cover (2); The storage area A comprises a plurality of layer baffles A (27) arranged in sequence from top to bottom, a storage box A (5) arranged on each layer baffle A (27), and a gravity sensor (7) arranged at the bottom center of each layer baffle A (27); The storage area B comprises a plurality of layer baffles B (28) arranged in sequence from top to bottom, a storage box B (6) arranged on each layer baffle B (28), and a gravity sensor (7) arranged at the bottom center of each layer baffle B (28); A taking port (29) is arranged at the center of the middle baffle (4), and a taking port baffle (9) is arranged at the taking port (29); A rudder (10) is connected to the upper end center of the taking port baffle (9) through a rudder mechanical arm (11), the rudder (10) is arranged at the upper center of the taking port (29), and the upper end of the taking port baffle (9) is clamped by the rudder mechanical arm (11); The article conveying and returning mechanism comprises support seats (19) and servo motors (20) arranged at the upper and lower ends of the center of the cabinet body (1), a driven synchronous wheel (18) is arranged on the support seat (19) through a bearing, a driving synchronous wheel is coaxially arranged on the main shaft of the servo motor (20), the driving synchronous wheel is connected with the driven synchronous wheel (18) through a synchronous belt A (17), a horizontal moving mechanism is connected with the synchronous belt A (17), and an article returning mechanism is connected with the horizontal moving mechanism; The horizontal moving mechanism comprises a sliding table (12) arranged in a horizontal direction, the sliding table (12) is connected with the synchronous belt A (17) through a clamping plate (16), opposite sides of the synchronous belt A (17) are also provided with guide rails (22) in parallel in a vertical direction, and the two guide rails (22) are connected with the sliding table (12) through guide rail sliding seats (21); a screw rod (13) is arranged on the sliding table (12) in a horizontal direction, one end of the screw rod (13) is connected with a screw module motor (15), and a sliding seat (14) is arranged on the screw rod (13). The article return mechanism comprises a return carrier (24) connected with the sliding seat (14), and a storage box (32) is arranged on the return carrier (24); a visual camera (26) is arranged above the storage box (32), and the opposite ends of the return carrier (24) are respectively provided with synchronous gear rods (25); a synchronous belt B (30) is arranged between the two synchronous gear rods (25), the inner side of the synchronous belt B (30) is processed with a gear ring which is engaged with the synchronous gear rod (25), and the outer side of the synchronous belt B (30) is fixedly connected with the storage box (32); and one end of one of the synchronous gear rods (25) is connected with a motor (31); When the return carrier (24) moves horizontally to a specified position, i.e. the article to be returned moves to the top of a certain storage box A or storage box B, the motor (31) works to drive the synchronous gear rod (25) to rotate, and the rotation of the synchronous gear rod (25) drives the synchronous belt B (30) to move; when the synchronous belt B (30) rotates by a distance of the interval width of the two baffles, the article to be returned between the two baffles falls into a certain storage box A or storage box B under the action of gravity, and the first article return is completed; the return mechanism continues to return the next article until all the articles are completely returned; The article borrowing process of the tool cabinet controlled automatically is as follows: The user selects the borrowed article according to the need, opens the applet on the mobile phone, opens the scanning interface on the applet homepage, and scans the two-dimensional code on the door corresponding to the medium-sized article; after the user scans successfully, the electromagnetic lock (8) works, the tool cabinet is opened, the user takes away the needed article, and then leaves; the gravity sensor (7) under the corresponding storage box A (5) or storage box B (6) works when the user takes the article, and calculates the type and quantity of the taken article according to the mass change in the storage box A (5) or storage box B (6); The tool cabinet background server records the article borrowing information of the user this time, including the type and quantity of the borrowed article, and the personal information of the user, to prepare for the article returning of the user; The article returning process of the tool cabinet controlled automatically is as follows: If the user wants to return the article, the user needs to open the applet on the mobile phone, open the scanning interface on the applet homepage, and scan the two-dimensional code on the return port; after the scanning succeeds, the background server reads the article borrowing information of the user to determine the type and quantity of the article that can be returned by the user; if the user has no article to return, the applet page prompts that there is no article to return; if the user has an article to return, the page prompts to start returning the article; After the prompt, the return port is rotated to open the door under the drive of the rudder motor (10) and the rudder motor mechanical arm (11), the user places the articles to be returned in the space formed by the partition plates (23) in the storage box (32) at the return port, one article is placed between every two partition plates (23), the visual camera (26) starts to identify the article returning information, the user places the articles and clicks to confirm the return on the applet page, the return port is closed, the applet page displays that the return is successful, and whether there is still an article to be returned is displayed according to the information identified by the visual camera, and the user leaves.

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