Intelligent internet-of-things unmanned aerial vehicle hanging box and automatic docking and locking control system thereof

Abstract

The application discloses an intelligent internet unmanned aerial vehicle (UAV) box and an automatic docking and locking control system thereof, and belongs to the technical field of UAV cargo hoisting. The system comprises a suspension connection unit, an intelligent cargo box unit, a positioning unit, a mechanical lock unit and an intelligent control unit. When the suspension unit and the positioning unit are magnetically connected, the intelligent control unit determines the locking or releasing mode through the number of signal contact connections; in the locking mode, a power-on timing control module supplies a first direction current to an electromagnetic adsorption module, sequentially drives a lock mechanism to close, and realizes mechanical locking; in the releasing mode, a reverse current is supplied, the lock mechanism is sequentially driven to open, and automatic unloading is realized. The system realizes full-process automation of UAV hoisting, has a high-reliability double-locking mechanism, effectively prevents aerial misrelease, is integrated into a smart internet network, and significantly improves the safety, efficiency and informatization level of hoisting operation.

Description

Technical Field

[0001] This invention relates to the field of drone cargo lifting technology, specifically to a drone-mounted cargo container system with automatic docking, intelligent locking, status interaction, and IoT communication functions. This application is particularly applicable to operational scenarios requiring drones to autonomously, accurately, and reliably mount and transport standardized cargo containers, such as logistics distribution, emergency material delivery, and warehouse inspection management, aiming to achieve fully automated and intelligent management of the lifting operation process. Background Technology

[0002] As an aerial transport platform, drones are increasingly used in logistics, emergency rescue, and industrial inspection. In these applications, drones frequently need to perform tasks such as loading, transporting, and unloading standardized cargo containers. Currently, the main methods for connecting drones to cargo containers and their limitations are as follows: Manual hook-up relies entirely on operators manually connecting the drone hook to the cargo container's lifting ring, resulting in low efficiency and high labor costs. It is particularly difficult and poses significant safety hazards during inclement weather, hazardous environments (such as disaster sites, high altitudes, confined spaces), or nighttime operations, severely limiting the drone's operational range and automation level.

[0003] The simplified semi-automatic mechanism uses simple mechanical structures such as hooks, buckles, or pins. It requires the drone to have extremely high hovering and positioning accuracy, and the connection is completed by remote control by the operator or through a simple triggering mechanism. It has stringent requirements for flight control precision and stability, and the docking success rate is low under wind disturbances. At the same time, the connection status lacks reliable feedback, and there is a risk of accidental disengagement during flight, resulting in insufficient safety and reliability.

[0004] Existing automation solutions have shortcomings, and some improved solutions have introduced electric latches or electromagnetic chucks, achieving a certain degree of automation. However, these solutions generally suffer from the following problems: The docking process has poor fault tolerance and requires high positioning accuracy; The system has limited functionality, only enabling physical connections and lacking integrated management of information on hoisted materials (such as classification, identification, and status recording). The human-computer interaction capability is weak, and ground personnel cannot intuitively and remotely obtain information on the mounting status and the materials inside the container; Each component operates independently, failing to form a unified intelligent control system. This makes it difficult to interact with higher-level logistics management platforms or drone swarm scheduling systems, and hinders effective integration into modern intelligent Internet of Things networks.

[0005] Therefore, existing technologies have not yet provided a drone lifting solution that integrates high-fault-tolerant automatic docking, high-reliability mechanical locking, intelligent material information management, human-machine multimodal interaction, and IoT communication capabilities. This results in limitations in the automation level, safety, operational efficiency, and integration of drone lifting operations into the smart logistics system. Summary of the Invention The purpose of this invention is to address the aforementioned problems by providing an intelligent IoT drone payload container and its automatic docking and locking control system. This system not only achieves highly reliable automatic loading through magnetic attraction and mechanical sequential locking, but also automatically triggers reverse timing control by intelligently sensing the lifting status (whether it is under load), thus achieving safe and intelligent automatic unloading without any manual intervention.

[0006] The technical solution of the present invention is as follows: A smart IoT drone payload container and its automatic docking and locking control system include: Suspension connection unit for connecting drones; The positioning unit is fixed to the top of the smart cargo box unit and is used for magnetic docking with the suspension connection unit; Mechanical locking units are located on both sides of the positioning unit and are used to lock or release the suspension connection unit; The intelligent control unit includes a main controller and a power-on timing control module; The power-on timing control module is configured to control the mechanical locking unit to execute a locking mode or a releasing mode when it detects that the suspension connection unit is in contact with the positioning unit. The locking mode is as follows: an electromagnetic force in the first direction is applied to the mechanical locking unit, causing it to close the locking mechanism one and the locking mechanism two in sequence, thereby locking the suspension connection unit to the positioning unit; The release mode is as follows: an electromagnetic force in a second direction opposite to the first direction is applied to the mechanical locking unit, causing it to sequentially open the second locking mechanism and the first locking mechanism, thereby releasing the suspension connection unit.

[0007] To address the issues of "low efficiency and significant safety hazards in manual docking" and "lack of reliable feedback and low docking success rate in simple semi-automatic mechanisms" in the background technology, this application realizes a fully automated closed-loop operation from docking perception to locking / releasing, without the need for manual intervention, significantly improving operational efficiency and safety. At the same time, through the timing control of bidirectional electromagnetic drive, it solves the problems of "complex structure and multiple failure points" in existing automation solutions, achieving highly reliable automatic locking and releasing with a simple structure.

[0008] Furthermore, the positioning unit includes a positioning magnetic block and signal contacts; The suspension connection unit includes a magnetic adsorption end; The signal contact is connected to the main controller and is used to generate a connection signal when the magnetic adsorption end is in contact with the positioning magnetic block. The main controller determines whether to execute the locking mode or the release mode based on the odd or even number of times the connection signal is activated: the locking mode is activated when the number of times the connection is odd, and the release mode is activated when the number of times the connection is even.

[0009] To address the problem of "lack of reliable feedback on whether the connection status is locked" in the background technology, this application uses the electrical signal generated by magnetic docking as the basis for status perception and mode determination. The odd-even number logic is simple and reliable, avoiding reliance on complex sensors and ensuring that the system can accurately identify the timing of mounting and unmounting, providing reliable triggering conditions for subsequent timing control.

[0010] Furthermore, the mechanical locking unit includes: Drive chute; A magnetically driven slider is slidably disposed within a drive groove; The electromagnetic adsorption module, located inside the drive slide, is used to generate attractive or repulsive forces on the magnetically driven slider. The drive link is hinged at both ends to the magnetic drive slider and the locking mechanism via the slider link hinge seat and the locking hinge seat, respectively. In the locked mode, the electromagnetic adsorption module is supplied with a current in the first direction, which generates an attractive force to drive the magnetically driven slider to slide, and drives the locking mechanism to close through the drive linkage. In release mode, the electromagnetic adsorption module is supplied with a current in a second direction opposite to the first direction, which generates a repulsive force to drive the magnetic drive slider to slide in the opposite direction, and drives the locking mechanism to open through the drive linkage.

[0011] To address the problem of "redundant structure and numerous failure points in existing automation solutions" in the background technology, this application adopts the same set of electromagnetic drive components, which can achieve two opposite functions of "attracting and locking" and "repelling and releasing" simply by intelligently controlling the direction of the current. This eliminates the need for complex mechanical reversing or multiple drive mechanisms, simplifies the system structure, reduces manufacturing and maintenance costs, and improves overall reliability.

[0012] Furthermore, the mechanical locking unit includes a first locking mechanism and a second locking mechanism arranged symmetrically, the first locking mechanism being locking mechanism one and the second locking mechanism being locking mechanism two; The power-on timing control module is configured as follows: In the locking mode, first control the electromagnetic adsorption module corresponding to the first locking mechanism to be energized to generate an attractive force. After the first locking mechanism is closed, control the electromagnetic adsorption module corresponding to the second locking mechanism to be energized to generate an attractive force, so that the second locking mechanism is closed. In release mode, the electromagnetic adsorption module corresponding to the second locking mechanism is first energized to generate a repulsive force. After the second locking mechanism is opened, the electromagnetic adsorption module corresponding to the first locking mechanism is then energized to generate a repulsive force, causing the first locking mechanism to open.

[0013] To address the issues of "poor fault tolerance and the need for extremely high positioning accuracy" in the background technology, this application achieves smooth and reliable operation of the mechanical locks through sequential control, avoiding the jamming or uneven force that may occur when the locks on both sides operate simultaneously, thereby improving the docking success rate and mechanical reliability. At the same time, the reverse sequence unlocking ensures that the unlocking process is smooth and controllable, further guaranteeing operational safety.

[0014] Furthermore, the mechanical locking unit also includes: The reset elastic element is connected between the magnetic drive slider and the drive groove, and is used to provide a tendency force to reset the magnetic drive slider when the electromagnetic adsorption module is powered off. A limiting device is located on the upper part of the drive slide groove to limit the opening angle of the locking mechanism.

[0015] To address the issue of "risk of accidental disengagement during flight" in the background technology, the reset elastic element provides holding force in the power-off state. Combined with the limiting device, it prevents the locking mechanism from opening excessively to a position close to 180° where it is subjected to unfavorable force, thus forming a power-off safety protection mechanism. This effectively avoids accidental locking caused by unexpected power outages or vibrations, greatly improving the safety of the hoisting process.

[0016] Furthermore, the intelligent control unit also includes a status detection circuit module, which is used to detect the connection status of the suspension connection unit and the positioning unit in real time, and indirectly determine whether the intelligent cargo box unit is in a load-bearing lifting state. The main controller is configured to trigger the release mode only when it detects that the smart cargo unit has changed from a load-bearing state to a non-load-bearing state and the suspension connection unit and the positioning unit are in contact again.

[0017] To address the issues of "lack of reliable feedback on connection status and insufficient security and reliability" in the background technology, this application constructs a state-aware secure release logic. The triggering of the release action strictly relies on the state detection of "lifting completed and cargo container landed," completely eliminating the risk of mid-air mislocking caused by signal misjudgment or interference during transportation, logically ensuring the absolute safety of lifting operations.

[0018] Furthermore, the intelligent control unit also includes: The IoT communication module is used to interact with the remote monitoring platform, upload the status information, material information and location information of the smart cargo box unit, and receive remote control commands. The main controller is configured to control the mechanical locking unit to perform forced locking or forced release according to remote control commands.

[0019] To address the issues of "limited functionality, lack of data interaction, and inability to integrate into intelligent IoT networks" in the background technology, this application enables each cargo container to become an intelligent IoT node, achieving real-time status reporting, material information management, and remote scheduling and control. This provides key single-unit hardware support for building a digital and visualized smart logistics network and solves the problem of information silos between existing hoisting devices and upper-level management systems.

[0020] Furthermore, the intelligent cargo box unit has a positioning boss at the bottom and a positioning groove at the top, and both the positioning boss and the positioning groove have built-in magnetic suction devices. When multiple smart cargo box units are stacked, the positioning bosses and positioning slots of adjacent cargo boxes are positioned by magnetic engagement to prevent relative slippage.

[0021] In response to the issue that "existing solutions do not consider the fixation problem during stacked transport of cargo boxes" in the background technology, this application achieves reliable fixation of multiple boxes during stacked transport by combining the interlocking structure of protrusions and grooves with magnetic positioning, preventing relative slippage. It also facilitates the precise positioning of the drone with the upper cargo box during unloading, thereby improving the stability and efficiency of multi-box operations.

[0022] Furthermore, the intelligent control unit also includes: An electronic display screen is used to show the type, quantity, and destination information of the materials inside the container; The voice broadcast module is used to broadcast a voice prompt of "Dock successful" or "Locking complete" after the lock mode is completed, and to broadcast a voice prompt of "Preparing to release" when the release mode is triggered.

[0023] To address the issue of "lack of human-machine interaction, making it impossible for ground personnel to intuitively obtain information on the mounting status and materials inside the container" in the background technology, this application achieves local visualization of material information through an electronic display screen and realizes multimodal human-machine interaction through voice broadcast. This allows ground personnel to intuitively grasp the equipment status without relying on remote controls or back-end systems, reducing the operational threshold and improving the convenience and safety of on-site operations.

[0024] Furthermore, the suspension connection unit includes a suspension cable and a magnetic adsorption end connected to the end of the suspension cable. The magnetic adsorption end is made of a conductive magnetic material and is used to establish a mechanical and electrical dual connection with the positioning unit (3).

[0025] To address the problem in the background technology that "simple semi-automatic mechanisms only complete physical connections and lack electrical interaction", this application uses a magnetic adsorption end made of conductive magnetic material to simultaneously complete electrical circuit conduction while achieving mechanical docking. This provides a reliable electrical interface for subsequent locking triggering and status detection, realizing dual integration of mechanics and electrical systems, simplifying the system structure, and improving docking efficiency and reliability.

[0026] Compared with existing technologies, the advantages of this invention are: 1. Achieve fully automated operation, improving operational efficiency and safety; This application integrates magnetic attraction and guidance, state perception and reversible electromagnetic drive technologies to construct a complete automated closed loop from "docking perception → sequential locking → hoisting monitoring → landing perception → sequential unlocking"; The entire operation process requires no manual intervention, completely solving the problems of low efficiency, high operational risk and great environmental constraints caused by relying on manual hooking or semi-automatic mechanisms in the existing technology, and significantly improving the automation level and operational safety of UAV hoisting; 2. A highly reliable dual connection mechanism is constructed to ensure lifting safety. This application adopts a dual-action structure of "magnetic attraction for initial fixation + time-sequence control for mechanical locking". Magnetic adsorption provides fault-tolerant positioning and triggers locking signals during the docking stage. After locking, the mechanical lock forms a reliable interlock, which can effectively resist dynamic loads such as flight vibration and acceleration. The release action strictly depends on the status detection after the cargo box lands, avoiding the risk of mis-locking during transportation and overcoming the defects of existing technologies, such as lack of feedback on the locking status and the risk of accidental disengagement. 3. The electromagnetic drive is reversible and the system structure is simplified and reliable. This application enables the same set of electromagnetic adsorption modules to achieve both "attraction and locking" and "repulsion and unlocking" by intelligently controlling the direction of the current, without the need for complex mechanical reversing mechanisms or multiple sets of drive components. This design simplifies the system structure, reduces manufacturing and maintenance costs, and improves overall reliability, solving the problems of structural redundancy and numerous failure points in existing automation solutions. 4. Integrating information technology and IoT communication to enhance material management capabilities: This application integrates an electronic display screen, status detection circuit, voice broadcast module, and IoT communication module at the cargo box end, enabling the cargo box to have local visualization of material information, multimodal human-machine interaction, and remote data reporting capabilities; compared with the existing single-function hoisting device lacking information interaction, this application can effectively support material classification management, real-time status monitoring, and data interoperability with the cloud scheduling system, meeting the information requirements of smart logistics for terminal equipment; 5. Standardized design, strong versatility and scalability. This application integrates core functional modules into a standardized cargo unit, forming an independent intelligent lifting terminal that can be widely adapted to various drone platforms with basic suspension points. Simultaneously, the intelligent control unit supports software upgrades and functional expansions, facilitating subsequent functional iterations based on application scenarios, demonstrating good versatility and application prospects. Attached Figure Description

[0027] Figure 1 This is a 3D view of the payload container for an intelligent IoT drone.

[0028] Figure 2 This is a schematic diagram of the bottom of the payload container of an intelligent IoT drone.

[0029] Figure 3 This is a three-dimensional view of the suspension connection unit.

[0030] Figure 4 This is a 3D view of the mechanical locking unit.

[0031] Figure 5 This is a 3D view of the locking mechanism.

[0032] Figure 6 This is a two-dimensional view of the locking mechanism.

[0033] Figure 7 This is a cross-sectional view of the drive slide.

[0034] Figure 8 This is a 3D view of the positioning unit.

[0035] Figure 9 This is a 3D view of the box's handle.

[0036] Figure 10 This is a 3D view of the intelligent control unit.

[0037] Reference numerals: 1-Suspension connection unit, 101-Suspension cable, 102-Magnetic adsorption end; 2-Intelligent cargo box unit, 201-Box handle, 202-Positioning groove, 203-Positioning boss, 204-Hinge; 3-Positioning unit, 301-Positioning magnetic block, 302-Signal contact; 4-Mechanical locking unit, 401-Drive slide groove, 402-Limiting device, 403-Magnetic drive slider, 404-Reset elastic element, 405-Electromagnetic adsorption module, 406-Slider connecting rod junction seat, 407-Drive connecting rod, 408-Lock hinge seat, 409-Lock mechanism one, 4010-Lock mechanism two, 4011-Lock limiting groove, 4012-Rotating shaft, 4013-Fixed bushing, 4014-Locking groove, 4015-Locking protrusion; 5-Intelligent control unit, 501-Main controller, 502-IoT communication module, 503-Voice broadcast module, 504-Status detection circuit module, 505-Electronic display screen, 506-Power-on timing control module; 6-Power supply unit, 601-Power supply module. Detailed Implementation

[0038] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0040] Please see Figures 1-10 A smart IoT drone payload container and its automatic docking and locking control system, such as Figure 1 As shown, the system includes a suspension connection unit 1 for connecting the drone, a smart cargo box unit 2 located below the drone, a positioning unit 3 fixed to the top of the cargo box, a mechanical locking unit 4 for mechanical locking, a smart control unit 5 for coordinating control and information interaction, and a power supply unit 6 for supplying power to each unit. Wherein: like Figure 3 and Figure 8 As shown, the suspension connection unit 1 is connected to the bottom of the UAV fuselage and includes a suspension cable 101 and a magnetic adsorption end 102. One end of the suspension cable 101 is connected to the drone mounting device, and the other end is connected to the magnetic adsorption end 102, mainly providing load-bearing connection.

[0041] The magnetic adsorption end 102 is mainly used for positioning and connection with the positioning magnetic block 301 on the box. The material of the magnetic adsorption end 102 is a conductive magnet. The magnetic adsorption end 102 can remain connected to the positioning magnetic block 301 when the mechanical locking unit 4 completes the locking procedure, and the mechanical locking unit 4 ensures that the drone can still be connected to the smart cargo box unit 2 when the magnetic adsorption end 102 is disconnected from the positioning magnetic block 301.

[0042] like Figure 1 ,Figure 2 and Figure 9 As shown, the intelligent cargo box unit 2 is a standard container that can be loaded with goods, including: The container handle 201 is located on the side of the intelligent cargo box unit 2 for easy manual handling; The positioning slots 202 are located around the top of the smart cargo box unit 2 and have built-in magnetic suction devices. They are used to interlock and position the multiple boxes when they are stacked to prevent relative slippage during transportation and to facilitate positioning when the drone is unloaded. Positioning protrusions 203 are located around the bottom of the intelligent cargo box unit 2 and have built-in magnetic suction devices. They cooperate with positioning slots 202 to interlock and position multiple boxes when stacked, preventing relative slippage during transportation and facilitating positioning during drone unloading. The number of positioning protrusions 203 and positioning slots 202 is the same. Hinge 204 is located on one side of the lid, connecting the lid to the box body, and enabling the lid to rotate and open.

[0043] like Figure 1 and Figure 8 As shown, the positioning unit 3 is fixedly installed at the top center of the intelligent cargo box unit 2, and includes: The positioning magnetic block 301 is fixed at the top center of the intelligent cargo box unit 2 and is mainly magnetically connected to the magnetic adsorption end 102. Signal contact 302 consists of two power contacts symmetrically arranged at the center of the positioning magnetic block 301, connected to the main controller 501. When the magnetic adsorption end 102 is in contact with the positioning magnetic block 301, the signal contact 302 connects the circuit and generates a power signal. The main controller 501 immediately turns on the power to the mechanical locking unit 4, and the mechanical locking unit 4 is electrically driven to complete the locking procedure.

[0044] During the drone's lifting of the container, the positioning magnetic block 301 detaches from the magnetic adsorption end 102. When unloading the container, the magnetic adsorption end 102 re-attaches to the positioning magnetic block 301, the signal contact 302 connects the circuit, generating a power signal, and the main controller 401 immediately initiates the unlocking procedure. The main controller 401 is configured with an odd number of attachments for a locking procedure and an even number of attachments for an unlocking procedure.

[0045] like Figure 1 As shown, the mechanical locking unit 4 is located on the left and right sides of the positioning unit 3, and includes an electromagnetic drive module, a drive linkage 407, a locking mechanism one 409, and a locking mechanism two 4010; the electromagnetic drive module includes: like Figure 4 As shown, at least two drive grooves 401 are fixed on the smart cargo box unit 2 to provide guidance for the magnetic drive slider 403; like Figure 7As shown, the limiting device 402 is located on the upper part of the drive slide 401. It mainly limits the opening angle of the locking mechanism 1 409 and the locking mechanism 2 4010 to prevent them from opening excessively to the unfavorable position of 180°, thereby ensuring that the drive linkage 407 can effectively drive the locking mechanism 1 409 and the locking mechanism 2 4010 to reset and close.

[0046] The magnetic sliding slider 403 is disposed in the drive groove 401 and is connected to the reset elastic element 404. The top of the magnetic sliding slider 403 is provided with a slider connecting rod hinge seat 406 to connect the drive connecting rod 407. The upper end of the slider connecting rod hinge seat 406 protrudes out of the drive groove 401. The reset elastic element 404 is connected between the magnetic drive slider 403 and the drive groove 401, providing a tendency force to reset the magnetic drive slider 403; The electromagnetic adsorption module 405 is disposed within the drive slide groove 401, and is located at the end furthest from the magnetic sliding slider 403 and the reset elastic element 404. The arrangement of the devices within the drive slide groove 401 consists of the electromagnetic adsorption module 405, the magnetic sliding slider 403, and the reset elastic element 404. Depending on the direction of the current flowing through it, the electromagnetic adsorption module 405 can generate an attractive or repulsive force on the magnetic drive slider 403, providing power to the mechanical locking unit 4.

[0047] like Figure 4 As shown, the two ends of the drive link 407 are respectively hinged to the slider link hinge seat 406 and the latch hinge seat 408 by fixing bolts, forming a power transmission structure between the electromagnetic drive module and the latch mechanism 1 409 and latch mechanism 2 4010. This structure is used to convert the linear motion generated by the electromagnetic drive module into the rotational motion of the latch mechanism 1 409 and latch mechanism 2 4010, thereby realizing the opening and closing action of the latch.

[0048] like Figure 5 As shown, the top of the locking mechanism 409 is provided with a locking limiting groove 4011, which is used to constrain it in the locked state and prevent it from slipping out accidentally; the bottom of the locking mechanism 409 is fixedly provided with a rotating shaft 4012, so that the locking mechanism 409 can rotate around the rotating shaft 4012; when the locking mechanism 409 and the locking mechanism 4010 are closed, the locking mechanism 409 and the locking mechanism 4010 are mutually locked by the engagement of the locking groove 4014 and the locking protrusion 4015.

[0049] like Figure 6 As shown, a rotating shaft 4012 is fixedly connected to the bottom of the second locking mechanism 4010, allowing the second locking mechanism 4010 to rotate around the rotating shaft 4012; a locking protrusion 4015 is provided on the top of the second locking mechanism 4010.

[0050] likeFigure 10 As shown, the intelligent control unit 5 is integrated into the intelligent cargo box unit 2, and includes: The main controller 501 is the core of the entire control system; The IoT communication module 502 is used to exchange data with a remote monitoring platform or dispatch system, upload status information and material data, and receive control commands; The voice broadcast module 503 provides voice prompts based on system status, such as "Dock successful", "Lock successful", "Ready to release".

[0051] The status detection circuit module 504 is used to detect the magnetic docking status, power contact connection status, locking mechanism position, and indirectly sense whether the cargo box is in a load-bearing lifting state by analyzing parameters such as the tightness of the connection between the suspension connection unit 1 and the positioning unit 3.

[0052] The electronic display screen 505 is used to store or wirelessly identify information such as the type, quantity, and destination of the materials in the box.

[0053] The power-on timing control module 506 is connected to the main controller 501 and the signal contact 302. Its configuration is as follows: after the magnetic docking is successful, the electromagnetic adsorption modules 405 on both sides are powered on in a preset sequence, so that the two magnetic drive sliders 403 move in sequence, driving the locking mechanism on both sides to complete the locking smoothly and reliably. When powered on for the first time, it provides electromagnetic attraction to the electromagnetic adsorption module 405, and when powered on for the second time, it provides electromagnetic repulsion.

[0054] Specifically, when the UAV suspension connection unit 1 contacts the positioning unit 3, the power-on timing control module 306 energizes the electromagnetic adsorption modules 404 corresponding to the magnetic drive slider 403 of the locking mechanism 1 409 and the magnetic drive slider 403 of the locking mechanism 2 4010 to generate attraction. When the UAV is hoisting, the smart cargo box is affected by gravity, causing the suspension connection unit 1 to separate from the positioning unit 3. The magnetic drive slider 403 of the locking mechanism 1 409 and the magnetic drive slider 403 of the locking mechanism 2 4010 are de-energized. When the UAV finishes hoisting and unloads the cargo, the smart cargo box lands and the suspension connection unit 1 and the positioning unit 3 re-contact. The magnetic drive slider 403 of the locking mechanism 1 409 and the magnetic drive slider 403 of the locking mechanism 2 4010 are energized for the second time, generating a repulsive magnetic force (simplified as attraction in the first instance and repulsion in the second instance). This force drives the linkage 407 to open the locking mechanism, completing the intelligent locking and unlocking.

[0055] The power-on timing control module 506 is connected to the main controller 501 and the electromagnetic adsorption module 405, and is configured to perform two operating modes: Locking mode: When the suspension connection unit 1 contacts the positioning unit 3 and the circuit is connected, it is determined that mounting needs to be performed. The module controls the current direction, so that the electromagnetic adsorption module 404 sequentially generates an attractive force on the magnetic drive slider 403, which drives the locking mechanism 407 to rotate smoothly to the closed position. The sequence is that the locking mechanism 1 409 closes first, and then the locking mechanism 2 closes 4010. This achieves mechanical locking.

[0056] Release Mode: When the drone completes the lifting operation and the cargo box lands without load, the system detects that the suspension connection unit 1 and the positioning unit 3 are in stable contact again, and determines that unloading needs to be performed. At this time, the module control current direction is reversed, causing the electromagnetic adsorption module 404 to generate a repulsive force on the magnetic drive slider 403 in sequence, driving the two to slide in opposite directions, and driving the locking mechanism to rotate and open. The sequence is that the second locking mechanism 4010 opens first, followed by the first locking mechanism 409. This achieves unlocking.

[0057] Power supply unit 6 is the onboard power supply built into the intelligent cargo box unit 2, which provides power to the entire system.

[0058] Beneficial effects: Intelligent operation throughout the entire process: The system realizes a fully automated closed-loop operation from "sensing docking → sequential locking → status monitoring → sensing unloading → sequential release", which truly requires no human intervention and has a high degree of intelligence.

[0059] Highly reliable dual-action latch: Utilizing the reversible attraction / repulsion properties of electromagnets, the same set of mechanical latch units can reliably perform two opposite actions of locking and releasing through intelligent current direction control. It has a simple structure and high reliability.

[0060] State-aware security logic: The release action is strictly triggered by the state detection of "lifting completed and cargo box landed", which avoids accidental release during transportation. At the same time, the mechanical locking unit is also equipped with a limit device to prevent the system from accidentally opening the locking device during transportation, thus greatly ensuring security.

[0061] Information-based management and human-centered interaction: The integration of electronic tags, status display screens, and voice broadcasts enables visualized management of material information and multimodal human-computer interaction.

[0062] System IoT connectivity and high integration: Built-in IoT communication module, which can be integrated into smart logistics network; the system is highly integrated into the cargo box and has strong adaptability.

[0063] Achieving fully automated operation: This application creatively combines "state perception" with "reversible electromagnetic drive," not only achieving automatic mounting and locking but also intelligently sensing the operation stage (in transit / unloaded), automatically triggering reverse timing control to complete the release. From docking, locking, and transportation to identification, unloading, unlocking, and separation, the entire process requires no manual intervention, achieving closed-loop automation, greatly improving operational efficiency, and reducing labor costs and safety risks.

[0064] Featuring a dual connection mechanism for high reliability and high security: It employs a dual-safety design of "magnetic adsorption for initial fixation + time-controlled mechanical locking for final locking." Magnetic adsorption provides fault-tolerant docking and trigger signals; mechanical locking ensures absolute reliability under dynamic loads such as flight vibration and acceleration. The release mechanism is equally rigorous, only activating after detecting the "unloaded" status, completely eliminating the risk of accidental locking in mid-air, ensuring extremely high security.

[0065] The system boasts an ingenious design and enhanced reliability: utilizing the same set of electromagnetic drive components, it achieves two opposing functions—"attraction locking" and "repulsion release"—simply by intelligently controlling the direction of the current, eliminating the need for complex mechanical reversing or additional drive mechanisms. This design simplifies the system structure, reduces potential failure points, improves overall reliability, and lowers manufacturing and maintenance costs.

[0066] Deeply integrating information technology and the Internet of Things (IoT): By integrating electronic tags, status displays, and IoT communication modules, this invention transforms each cargo container into a smart IoT node. It can not only manage its own material information and report its status in real time (location, lock status, battery level), but also receive remote commands, seamlessly integrating into cloud-based scheduling and management systems. This provides crucial single-unit hardware support for building a digital and visualized smart logistics network.

[0067] It possesses excellent versatility and scalability: the core module of the system is integrated into a standardized cargo container, forming an independent intelligent lifting unit, which is theoretically compatible with any drone platform with a basic suspension point. Furthermore, its intelligent control core can be upgraded via software to expand its functionality, demonstrating broad application prospects and market potential.

[0068] The above are merely specific embodiments of this invention. Commonly known structures and characteristics, such as cables, fixing bolts, hinges, magnets, electronic displays, and case handles, are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this invention, and these should also be considered within the scope of protection of this invention. These modifications will not affect the effectiveness and practicality of this invention. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

[0069] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A smart IoT drone payload container and its automatic docking and locking control system, characterized in that, include: Suspension connection unit (1) for connecting the drone; The positioning unit (3) is fixed to the top of the smart cargo box unit (2) and is used to magnetically connect with the suspension connection unit (1); Mechanical locking units (4) are located on both sides of the positioning unit (3) and are used to lock or release the suspension connection unit (1). The intelligent control unit (5) includes a main controller (501) and a power-on timing control module (506). The power-on timing control module (506) is configured to control the mechanical locking unit (4) to perform a locking mode or a releasing mode when it is detected that the suspension connection unit (1) is in contact with the positioning unit (3); The locking mode is as follows: apply electromagnetic force in the first direction to the mechanical locking unit (4) so ​​that it sequentially closes the locking mechanism one (409) and the locking mechanism two (4010) to lock the suspension connection unit (1) to the positioning unit (3). The release mode is as follows: apply a second electromagnetic force opposite to the first direction to the mechanical locking unit (4) so ​​that it sequentially opens the second locking mechanism (4010) and the first locking mechanism (409) and releases the suspension connection unit (1).

2. The intelligent IoT drone payload carrier and its automatic docking and locking control system according to claim 1, characterized in that, The positioning unit (3) includes a positioning magnetic block (301) and a signal contact (302). The suspension connection unit (1) includes a magnetic adsorption end (102); The signal contact (302) is connected to the main controller (501) and is used to generate a connection signal when the magnetic adsorption end (102) is attached to the positioning magnetic block (301); The main controller (501) determines whether to execute the locking mode or the release mode based on the odd or even number of times the connection signal is activated: the locking mode is executed when the number of times the connection is odd, and the release mode is executed when the number of times the connection is even.

3. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The mechanical locking unit (4) includes: Drive slide (401); A magnetically driven slider (403) is slidably disposed within a drive groove (401); An electromagnetic adsorption module (405) is located in the drive groove (401) and is used to generate an attractive or repulsive force on the magnetic drive slider (403); The drive link (407) is hinged at both ends to the magnetic drive slider (403) and the locking mechanism via the slider link hinge seat (406) and the locking hinge seat (408), respectively. In the locked mode, the electromagnetic adsorption module (405) is supplied with a current in the first direction, which generates an attractive force to drive the magnetic drive slider (403) to slide, and drives the locking mechanism to close through the drive link (407). In release mode, the electromagnetic adsorption module (405) is supplied with a second direction current opposite to the first direction, which generates a repulsive force to drive the magnetic drive slider (403) to slide in the opposite direction, and drives the locking mechanism to open through the drive link (407).

4. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 3, characterized in that, The mechanical locking unit (4) includes a first locking mechanism and a second locking mechanism arranged symmetrically. The first locking mechanism is locking mechanism one (409), and the second locking mechanism is locking mechanism two (4010). The power-on timing control module (506) is configured as follows: In the locking mode, first control the electromagnetic adsorption module (405) corresponding to the locking mechanism one (409) to be energized to generate an attractive force. After the locking mechanism one (409) is closed, control the electromagnetic adsorption module (405) corresponding to the locking mechanism two (4010) to be energized to generate an attractive force, so that the locking mechanism two (4010) is closed. In the release mode, first control the electromagnetic adsorption module (405) corresponding to the second locking mechanism (4010) to be energized to generate a repulsive force. After the second locking mechanism (4010) is opened, control the electromagnetic adsorption module (405) corresponding to the first locking mechanism (409) to be energized to generate a repulsive force, so that the first locking mechanism (409) is opened.

5. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 3, characterized in that, The mechanical locking unit (4) also includes: The reset elastic element (404) is connected between the magnetic drive slider (403) and the drive groove (401) and is used to provide a tendency force to reset the magnetic drive slider (403) when the electromagnetic adsorption module (405) is de-energized; A limiting device (402) is provided on the upper part of the drive slide (401) to limit the opening angle of the locking mechanism.

6. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The intelligent control unit (5) also includes a status detection circuit module (504), which is used to detect the connection status of the suspension connection unit (1) and the positioning unit (3) in real time, and indirectly determine whether the intelligent cargo box unit (2) is in a load-bearing hoisting state. The main controller (501) is configured to trigger the release mode only when it detects that the smart cargo box unit (2) changes from a load-bearing state to a non-load-bearing state and the suspension connection unit (1) contacts the positioning unit (3) again.

7. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The intelligent control unit (5) also includes: The IoT communication module (502) is used to interact with the remote monitoring platform, upload the status information, material information and location information of the smart cargo box unit (2), and receive remote control commands; The main controller (501) is configured to control the mechanical locking unit (4) to perform forced locking or forced release according to remote control instructions.

8. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The intelligent cargo box unit (2) has a positioning boss (203) at the bottom and a positioning groove (202) at the top. Both the positioning boss (203) and the positioning groove (202) have built-in magnetic suction devices. When multiple smart cargo box units (2) are stacked, the positioning bosses (203) and positioning grooves (202) of adjacent cargo boxes are positioned by magnetic engagement to prevent relative slippage.

9. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The intelligent control unit (5) also includes: An electronic display screen (505) is used to display the type, quantity, and destination information of the materials inside the box; The voice broadcast module (503) is used to broadcast the voice prompts "Docking successful" or "Locking complete" after the lock mode is completed, and to broadcast the voice prompt "Ready to release" when the release mode is triggered.

10. The intelligent IoT drone payload container and its automatic docking and locking control system according to claim 1, characterized in that, The suspension connection unit (1) includes a suspension cable (101) and a magnetic adsorption end (102) connected to the end of the suspension cable (101). The magnetic adsorption end (102) is made of a conductive magnetic material and is used to establish a mechanical and electrical dual connection with the positioning unit (3).

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