A non-inductive sharing power control method and device based on NFC identification

Abstract

The application discloses a kind of based on NFC identification's non-inductive shared power control method and device, belong to shared power control technical field.The application uses no-load pre-identification time-sharing control logic, completes NFC equipment pre-identification and identity pre-checking in the no-load non-conduction state of equipment power supply loop, avoids power-on electromagnetic interference, matches multi-cycle signal sampling, confidence decision and adaptive sampling mechanism, improves identification fault tolerance rate.Meanwhile, set up single power unique token replay prevention mechanism, realize abnormal early warning in combination with user power consumption behavior comparison, realize automatic power-on, metering settlement, fault monitoring and encrypted remote operation and maintenance relying on cloud, applet, terminal three-layer architecture.The scheme solves the problems of traditional equipment NFC identification fault tolerance, high-power working condition recognition failure and difficulty in operation for elderly users, and is suitable for shared power consumption scenarios in aging and complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology for shared electricity, specifically to a contactless shared electricity control method and device based on NFC identification. Background Technology

[0002] Existing shared power devices generally adopt NFC instant identification and synchronous power-on control. Although the applicant's prior published patents CN119559725A and CN119625886A have achieved anti-theft control and intelligent power supply functions for shared power devices, they still have obvious technical defects in age-friendly and convenient power use and stable identification scenarios under high power conditions. At present, the NFC antenna of small shared power plugs is limited by the narrow shell structure, resulting in a short sensing distance and extremely low error tolerance of the identification angle. Elderly users are prone to NFC identification failure and failure to automatically power on due to common operational problems such as physiological hand tremors, plug misalignment, and improper insertion. Repeated plugging and unplugging seriously affects the user experience and violates the age-friendly design intention of "plug and play" for shared power devices. Meanwhile, the device generates an inrush current and forms an electromagnetic shield when it is powered on and switched on. The NFC chip relies on the device's inductive energy for power supply. Under high-power power conditions, it is prone to insufficient inductive power supply and signal disorder, which leads to ID reading failure. Users cannot identify the cause of the fault and can only repeatedly plug and unplug the device. The device has poor identification stability and insufficient adaptability to operating conditions, making it difficult to meet the normal use needs of community aging-friendly and outdoor high-power convenient shared power. Summary of the Invention

[0003] The purpose of this invention is to provide a contactless shared power control method and device based on NFC identification to solve the problems mentioned in the background art.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A contactless shared power control method based on NFC identification is applied to a shared power system including a cloud management platform and shared power devices, wherein the shared power devices are equipped with an NFC identification module, and includes the following steps: S1. Pre-configured monitoring: The cloud management platform pre-stores the binding relationship between NFC device identifiers and user accounts, and the shared power device continuously monitors the access signals of external NFC devices through the NFC identification module; S2, Fault-tolerant pre-identification: When the power supply circuit of the shared power device is unloaded and not conducting, the device and the cloud management platform work together to complete the NFC device identification and identity pre-verification during the pre-power-on window through multi-cycle NFC signal sampling and confidence fusion judgment.

[0005] S3. Formal Identity Upload and Verification: After completing the pre-identification verification, the NFC identification module reads the unique device identifier of the NFC device and uploads it to the cloud management platform. Based on the pre-stored device identifier and user account binding data, the cloud management platform completes the verification of the device's legality, device availability status, and corresponding user power access rights, and issues an authorized power-on command or a power-off command based on the verification results. S4. Power metering and control: After receiving the authorization command, the shared power device connects the power supply circuit and collects the power consumption parameters of the circuit in real time to achieve accurate branch metering and billing. S5. Power Outage Settlement and Archiving: The equipment monitors the load status of the power supply circuit in real time. When the power supply circuit is unloaded for a preset time and meets the power outage conditions, the power is automatically cut off. The cloud completes the cost settlement based on the metering data and generates and stores the electricity consumption order.

[0006] In a preferred embodiment, step S2, the multi-cycle NFC signal sampling and confidence fusion decision method includes continuously collecting multiple frames of NFC sensing signals, removing abnormal fluctuation signals, performing confidence weighted calculation on the valid signals, and determining that the NFC device identifier recognition is valid when the signal confidence reaches a preset confidence threshold, thus completing the identity pre-verification.

[0007] In a preferred embodiment, the pre-identification process in step S2 can achieve identification to prevent replay and dynamic failure handling. A unique temporary verification token is generated for each NFC device pre-identification behavior. This token is only valid for the current device bonding and single power consumption process. If the NFC device is detected to be bonded again after being removed, or the power consumption process is interrupted and restarted, the historical token is automatically invalidated and the complete pre-identification process is restarted to avoid illegal replay identification and impersonation access.

[0008] In a preferred embodiment, the pre-identification process in step S2 adopts a dynamic adaptive sampling period method, which adjusts the signal sampling frequency according to the real-time NFC signal strength. The lower the signal strength, the higher the corresponding sampling frequency. The adaptive confidence weight coefficient is matched synchronously to complete stable pre-identification under weak signal, long distance, and offset bonding conditions.

[0009] In a preferred embodiment, the preset power outage duration in step S5 is 2 minutes.

[0010] In a preferred embodiment, an abnormal power consumption monitoring and early warning step is also included: The cloud management platform pre-stores historical electricity consumption behavior characteristic data for each user. This historical electricity consumption behavior characteristic data includes frequently used electricity consumption locations, regular power consumption, regular single-use power consumption, and frequently used electricity consumption periods. The cloud management platform compares the current electricity consumption data with the historical electricity consumption behavior characteristic data in real time. If any of the following conditions are found: abnormal electricity consumption location, power consumption exceeding the threshold, power consumption exceeding the threshold, or abnormal electricity consumption period, it is determined as abnormal electricity consumption behavior, and an abnormal alarm message is pushed to the bound user terminal.

[0011] In a preferred embodiment, the threshold determination rule for abnormal power consumption includes: An abnormal power consumption alarm will be triggered immediately if the current power consumption location is different from the historically commonly used power consumption location, the current maximum power consumption exceeds the historical maximum power consumption by 20%, the current power consumption exceeds the historical single maximum power consumption by 100%, or the power consumption start time deviates from the preset commonly used time period.

[0012] In a preferred embodiment, a device fault monitoring and alarm step is also included: The shared power supply device monitors the electrical operation status of the power supply circuit and the tripping status of the leakage protection switch in real time. When an overvoltage, overcurrent, short circuit, or leakage fault is detected and the leakage protection switch is triggered to trip, the power supply circuit is immediately cut off. At the same time, the fault type, fault occurrence time, and fault equipment information are uploaded to the cloud management platform to complete the fault alarm and work order recording.

[0013] In a preferred embodiment, a remote operation and maintenance upgrade step for the device is also included: The cloud management platform performs remote OTA program upgrades for shared power devices via a 4G communication link. Shared power devices support local Bluetooth-based debugging and maintenance without opening the cover. All remote upgrade and local debugging data are transmitted using hardware encryption.

[0014] A contactless shared power control device based on NFC identification, used in the aforementioned contactless shared power control method based on NFC identification, includes a cloud management platform, a user terminal applet, and several shared power terminal devices, characterized in that: The cloud management platform is used to store user account information, device binding information, and user electricity consumption behavior data, and to perform device identity verification, electricity use permission verification, abnormal electricity consumption identification, fee settlement, and remote device control.

[0015] The user terminal applet is connected to the cloud management platform and is used to realize user registration and recharge, order inquiry, abnormal alarm reception, device loss reporting and unbinding operations.

[0016] The shared power terminal equipment includes a main control module, and an NFC identification module, a 4G communication module, an energy metering module, a load control switch, a safety protection module, and a remote signaling acquisition module, which are respectively connected to the main control module.

[0017] The NFC identification module is used to monitor the access signals of external NFC devices in real time, read the unique device identifier of the NFC device, and upload it.

[0018] The 4G communication module is used to enable bidirectional encrypted data transmission between the shared power terminal equipment and the cloud management platform.

[0019] The power metering module is used to collect voltage, current, power, and power consumption parameters of the power supply circuit in real time to complete accurate branch metering.

[0020] The load control switch is used to automatically control the power supply circuit to switch on and off according to instructions from the main control module and the cloud.

[0021] The safety protection module integrates lightning protection, overvoltage protection, overcurrent protection, short circuit protection, and leakage protection functions to achieve fault protection of the power supply circuit.

[0022] The remote signaling acquisition module is used to monitor the working status of the leakage current protection switch in real time, collect fault signals and upload them synchronously.

[0023] Compared with existing technologies, this invention advances the NFC identification process to the uninterrupted, interference-free stage of the power supply circuit through time-division control logic for pre-identification under no-load conditions. This effectively avoids the identification interference problems caused by the inrush current and electromagnetic shielding at the moment of power-on in traditional devices, and overcomes the working condition defect of insufficient power supply to the NFC chip. Furthermore, by combining multi-cycle signal sampling, confidence fusion decision, and dynamic adaptive sampling mechanisms, it significantly improves the distance and angle tolerance capabilities of NFC identification, effectively adapting to non-standard operating scenarios such as hand tremors, misaligned plugs, and improper insertion by elderly users, thus solving the problem of successful identification with traditional devices. Addressing the pain points of low efficiency and the need for repeated plugging and unplugging, this invention truly achieves plug-and-play, age-appropriate use of shared power equipment. Furthermore, it incorporates a unique token verification mechanism for each power consumption, mitigating the security risks of signal replay and misuse. Combined with abnormal warnings based on user power consumption behavior analysis, equipment fault monitoring, and encrypted remote maintenance functions, this invention effectively enhances the operational security, refined management, and ease of maintenance of the shared power system while improving equipment adaptability and convenience. It is well-suited to the routine and stable operation needs of various unattended shared power scenarios, such as age-appropriate power supply in communities and high-power temporary outdoor power supply. Attached Figure Description

[0024] Figure 1 This invention relates to a process flow diagram of a contactless shared power control method based on NFC identification. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0027] Reference Figure 1 This embodiment discloses a contactless shared power control method and device based on NFC identification, which can be applied to unattended shared power scenarios such as age-friendly shared power in communities, convenient shared sockets outdoors, and high-power temporary power in the wild. It mainly solves two core practical problems of existing NFC shared power devices with small shells: First, the NFC antenna is integrated into the small shell of the plug, resulting in a short sensing distance and extremely low error tolerance for the recognition angle. Common operational problems such as physiological hand tremors of elderly users, misaligned plugs, and inability to fully insert the plug will cause the device ID recognition to fail and fail to automatically power on. Repeated plugging and unplugging cannot solve the problem, which violates the age-friendly design intention of plug-and-play shared power. Second, traditional NFC identification is synchronized with device power-on. Under high-power conditions, the surge current at the moment of power-on will form a strong electromagnetic shield. The NFC chip relies on the device's sensed energy for power supply, which is prone to insufficient power supply and signal disorder, ultimately leading to ID reading failure. Elderly users cannot determine the cause of the failure and can only repeatedly plug and unplug the plug, resulting in a poor user experience and low device reliability. This solution effectively addresses the pain points in the aforementioned scenarios through innovative timing control, signal optimization, security protection, and hardware adaptation design, achieving stable, age-friendly, safe, and intelligent seamless power sharing.

[0028] The overall system architecture of this embodiment includes a cloud management platform, a user terminal applet, and several shared power terminal devices. Each shared power terminal is equipped with an NFC identification module, a 4G communication module, a high-precision energy metering module, a load control switch, a safety protection module, and a remote signaling acquisition module. Relying on the coordinated operation of hardware and software, it completes fully automated power control throughout the entire process. The specific implementation method is as follows: First, the system is pre-configured and continuously monitored for signals. During actual deployment, the cloud management platform pre-binds and stores the unique identifiers of user accounts and NFC devices, establishing a fixed account-device correspondence and providing a data benchmark for subsequent permission verification. After the shared power terminal device is powered on and in standby mode, the power supply circuit remains disconnected, while the NFC identification module continuously monitors the radio frequency access signal of external NFC devices around the clock, maintaining a standby identification state without any identification sleep or response lag.

[0029] During the interference-free window of no-load standby, the device completes fault-tolerant pre-identification. The entire identification process is completed under conditions where the power supply circuit is not conducting, there is no inrush current, and there is no electromagnetic shielding interference, avoiding electromagnetic interference problems at the moment of power-on. The device completes NFC device identification and identity pre-verification through multi-cycle signal sampling combined with confidence fusion decision, without requiring precise device alignment and bonding, and can adapt to non-standard operations such as skewed bonding, slight offset, and incomplete insertion, thus adapting to the operating habits of elderly users.

[0030] The specific signal recognition process is as follows: Within a single device bonding cycle, the device continuously collects 10 to 15 frames of NFC sensing signals, fully covering the signal changes throughout the entire process of user bonding, alignment, and stillness. For instantaneous signal fluctuations caused by user hand tremors or device misalignment, as well as abnormal interference signals from outdoor electromagnetic noise, the system automatically filters and removes abnormal data frames, retaining only valid recognition signals. Subsequently, a weighted confidence score is calculated for the valid signals, dynamically matching weight coefficients based on signal strength to ultimately synthesize the overall signal confidence score. When the confidence score reaches a preset confidence threshold of 85% to 95%, the pre-identification is deemed valid, completing the identity pre-verification.

[0031] To further enhance power security in public scenarios, this embodiment incorporates anti-replay and dynamic failure handling mechanisms during the pre-identification process. Each pre-identification process triggered by device contact generates a unique temporary verification token. This token is generated by combining terminal hardware encoding, a real-time timestamp, and a random hash value, ensuring that each token is unique and non-repeating. The token's validity is strictly limited to a single device contact and a single complete power consumption process. If the NFC device leaves the sensing area, the power consumption process times out, or the device is re-contacted, the system automatically invalidates the historical token and re-executes the complete pre-identification process. This approach effectively prevents external devices from intercepting identification signals and impersonating others' power access through replay replication, making it suitable for outdoor, open, and unattended power deployment scenarios.

[0032] Meanwhile, this embodiment employs a dynamic adaptive sampling mechanism to adapt to various complex bonding conditions. The system detects NFC signal strength in real time and adjusts the sampling frequency and confidence weight ratio in reverse according to signal quality. Under strong signal conditions of close-range standard bonding, the sampling frequency is reduced to decrease redundant computation of the main control module and reduce standby power consumption. Under weak signal conditions of long-distance bonding, shell obstruction, or severe offset, the sampling frequency is automatically increased to capture effective signals intensively. At the same time, the judgment weight of effective signals is increased and the weight of noise interference is weakened, ensuring stable pre-identification under various non-standard operating conditions and improving the problem that fixed sampling mode cannot balance recognition efficiency and recognition success rate.

[0033] After completing the no-load pre-identification and pre-verification, the device enters the formal identity verification process. The NFC identification module uploads the unique device identifier it reads to the cloud management platform via a 4G encrypted link. The cloud retrieves the pre-stored device and user binding data and verifies the device's legality, online availability, and the corresponding user's power access permissions in sequence. Based on the verification results, it issues the corresponding power authorization command or power rejection command, thus controlling the compliance of power access from the cloud level.

[0034] Upon receiving the cloud-authorized power-on command, the shared power terminal activates its internal power supply circuit and enters normal power-on metering and control mode. The energy metering module on the device collects core electrical parameters such as voltage, current, real-time power, and cumulative power consumption of the power supply circuit in real time, enabling independent metering of individual devices. This provides effective data support for subsequent billing settlement and ensures that billing data is accurate and traceable.

[0035] During power consumption, the equipment continuously monitors the circuit load status and executes intelligent no-load power-off and settlement archiving logic. This embodiment sets a fixed no-load judgment duration of 2 minutes to distinguish between instantaneous load fluctuations and the actual end of power consumption. In daily use, if the instantaneous no-load condition caused by the user temporarily removing or placing equipment or briefly pausing power consumption lasts less than 2 minutes, the system will not perform a power-off operation to avoid accidental power outages that disrupt the user's normal power supply. When the circuit no-load state remains stable for 2 minutes without any load rebound fluctuations, the system determines that the user's power consumption has ended and automatically drives the load control switch to disconnect the power supply circuit. After the power outage is completed, the cloud automatically completes the cost statistics and settlement based on the electricity consumption data throughout the process, generates standardized electricity consumption orders, and archives them, achieving a fully automated closed loop for the entire process of electricity consumption, power outage, settlement, and archiving, without manual intervention.

[0036] This embodiment also features a complete abnormal power consumption monitoring and early warning mechanism, addressing the problem that traditional shared power systems can only passively protect against faults and cannot proactively control risks. The cloud management platform continuously collects and accumulates power consumption behavior data from each user, forming a personalized power consumption benchmark model that includes frequently used power locations, typical power consumption, standard single-use power consumption, and frequently used power consumption periods. During each power-on and power-use process, the terminal synchronously uploads the power location, real-time power, cumulative power consumption, and power consumption time to the cloud in real time. The cloud then dynamically compares the real-time data with the user's historical benchmark data.

[0037] The specific quantitative judgment criteria are as follows: Abnormal electricity usage is determined when the current electricity consumption location differs from historically frequently used locations, the current maximum power consumption exceeds the historical maximum power consumption by 20%, the current single-time power consumption exceeds the historical maximum power consumption by 100%, or the electricity consumption start time deviates from the preset frequently used time period. Once an anomaly is determined, the cloud immediately pushes tiered alarm information to the user's bound mini-program terminal and the operation and maintenance management backend, enabling early identification, early warning, and early control of abnormal electricity usage, effectively avoiding risks such as electricity theft, illegal high-power electricity use, and abnormal electricity use in different locations.

[0038] To ensure the long-term stable operation of outdoor equipment, this embodiment adds a fault monitoring and alarm function. During equipment operation, the remote signaling acquisition module and the safety protection module work together in real time to monitor the electrical operating status of the power supply circuit and the opening status of the leakage protection switch at the millisecond level. It can accurately identify various electrical faults such as overvoltage, overcurrent, short circuit, and leakage. Once a fault triggers hardware protection and the switch opens and cuts off power, the main control module immediately locks the fault status and simultaneously uploads complete information such as fault type, fault occurrence time, equipment number, and installation location to the cloud via the 4G module. The cloud automatically generates a maintenance work order and pushes it to the maintenance terminal, realizing on-site fault protection, remote alarm, and full traceability, solving the problems of delayed fault handling, lack of data retention, and inefficient maintenance of outdoor equipment.

[0039] To address the challenges of complex maintenance, cumbersome upgrades, and insecure transmission associated with outdoor distributed devices, this embodiment employs a dual-path maintenance and upgrade mechanism. During routine function iterations and program version updates, the cloud performs remote OTA (Over-The-Air) silent upgrades via a 4G communication link, eliminating the need for on-site disassembly by maintenance personnel and adapting to unified iterative upgrades for a large number of distributed devices. When devices exhibit abnormal local parameters requiring fine-tuning, maintenance personnel can connect to the device via Bluetooth on their mobile phones for on-site debugging without opening the cover, significantly simplifying the maintenance process. Simultaneously, all remote upgrade data packets and local debugging interaction data are transmitted using hardware encryption, completely avoiding security risks such as data tampering, malicious program implantation, and information leakage, balancing maintenance convenience with system security.

[0040] The hardware system in this embodiment adopts a three-layer collaborative architecture of cloud, user terminal, and hardware terminal, with clear division of labor and coordinated operation among modules. The cloud management platform is mainly responsible for storing user information, device binding information, and electricity consumption behavior data, and completes identity verification, permission determination, anomaly identification, fee settlement, and remote device control. The user terminal applet provides users with a visual operation entry point, enabling daily operations such as registration and recharge, electricity order inquiry, anomaly alarm reception, device loss reporting, and device unbinding. The hardware terminal, as the field execution carrier, completes all field operations such as signal monitoring, identity recognition, circuit control, electrical metering, fault protection, and data uploading through the coordinated cooperation of various functional modules, providing stable hardware support for the entire intelligent electricity consumption method.

[0041] To meet the requirements of precise no-load power outage management, this equipment is equipped with a 1.0-level high-precision single-phase metering module. Compared with ordinary civilian metering modules, this module has higher accuracy in identifying electrical parameters. In addition to routine power consumption statistics, it can distinguish subtle changes in the operating conditions of the power supply circuit, such as full load, light load, and no load. It can continuously identify stable no-load states and feed back no-load signals to the main control module in real time. This provides reliable underlying data for the main control module's timing judgment, automatic power outage, and billing, improving problems such as misjudgment of operating conditions, power outage failure, and billing deviation caused by insufficient accuracy of ordinary modules.

[0042] The main control module of the equipment has a built-in dedicated no-load timing judgment program that can match the control logic of a 2-minute no-load power-off. After receiving the no-load signal uploaded by the metering module, the main control module automatically starts timing and monitors load fluctuations in real time. After meeting the 2-minute continuous no-load condition, it autonomously outputs a power-off control signal to drive the load switch to disconnect. At the same time, it actively triggers the cloud settlement process, realizing fully automatic linkage of no-load judgment, automatic power-off, and cost archiving. This unifies the management standards of all equipment, improves the problems of traditional equipment power-off logic being crude, management being non-standard, and settlement not being closed-loop, and adapts to the needs of unattended routine operation.

[0043] In terms of hardware structure and environmental adaptability, this shared power terminal adopts a standard DIN rail mounting structure, adapting to diverse deployment scenarios. It can be installed inside conventional distribution box cabinets or mounted on outdoor utility poles and walls via matching adapter brackets, solving the problem of traditional equipment having a single installation method and being unable to be deployed outdoors. All equipment uses industrial-grade wide-temperature components, with an operating temperature range covering -20℃ to 50℃. It can withstand extreme outdoor environments with high summer temperatures and low winter temperatures, and can operate stably in outdoor locations without constant temperature protection, such as open-air, field, and park locations, greatly improving the adaptability of outdoor deployment and all-weather operational stability of the equipment.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 terminal device 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 terminal device. Unless otherwise specified, an element defined by the phrase "comprising..." or "including..." does not exclude the presence of additional elements in the process, method, article, or terminal device that includes said element. Additionally, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number.

[0045] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A contactless shared power control method based on NFC identification, applied to a shared power system including a cloud management platform and shared power devices, wherein the shared power devices are equipped with an NFC identification module, characterized in that, Includes the following steps: S1. Pre-configured monitoring: The cloud management platform pre-stores the binding relationship between NFC device identifiers and user accounts, and the shared power device continuously monitors the access signals of external NFC devices through the NFC identification module; S2, Fault-tolerant pre-identification: When the power supply circuit of the shared power device is unloaded and not connected, the device and the cloud management platform work together to complete the NFC device identification and identity pre-verification during the pre-power-on window period through multi-cycle NFC signal sampling and confidence fusion judgment. S3. Formal Identity Upload and Verification: After completing the pre-identification verification, the NFC identification module reads the unique device identifier of the NFC device and uploads it to the cloud management platform. Based on the pre-stored device identifier and user account binding data, the cloud management platform completes the verification of the device's legality, device availability status, and corresponding user power access rights, and issues an authorized power-on command or a power-off command based on the verification results. S4. Power metering and control: After receiving the authorization command, the shared power device connects the power supply circuit and collects the power consumption parameters of the circuit in real time to achieve accurate branch metering and billing. S5. Power Outage Settlement and Archiving: The equipment monitors the load status of the power supply circuit in real time. When the power supply circuit is unloaded for a preset time and meets the power outage conditions, the power is automatically cut off. The cloud completes the cost settlement based on the metering data and generates and stores the electricity consumption order.

2. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, In step S2, the multi-cycle NFC signal sampling and confidence fusion decision method includes continuously collecting multiple frames of NFC sensing signals, removing abnormal fluctuation signals, and performing confidence weighted calculation on the valid signals. When the signal confidence reaches a preset confidence threshold, the NFC device identifier is determined to be valid, and the identity pre-verification is completed.

3. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, The pre-identification process in step S2 can achieve identification to prevent replay and dynamic failure handling. A unique temporary verification token is generated for each NFC device pre-identification behavior. This token is only valid for the current device bonding and single power consumption process. If the NFC device is detected to be bonded again after being removed, or the power consumption process is interrupted and restarted, the historical token is automatically invalidated and the complete pre-identification process is restarted to avoid illegal replay identification and impersonation access.

4. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, The pre-identification process in step S2 adopts a dynamic adaptive sampling period method, which adjusts the signal sampling frequency according to the real-time NFC signal strength. The lower the signal strength, the higher the corresponding sampling frequency. The adaptive confidence weight coefficient is matched synchronously to complete stable pre-identification under weak signal, long distance, and offset bonding conditions.

5. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, The preset power outage duration in step S5 is 2 minutes.

6. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, It also includes abnormal electricity consumption monitoring and early warning steps: The cloud management platform pre-stores historical electricity consumption behavior characteristic data for each user. This historical electricity consumption behavior characteristic data includes frequently used electricity consumption locations, regular power consumption, regular single-use power consumption, and frequently used electricity consumption periods. The cloud management platform compares the current electricity consumption data with the historical electricity consumption behavior characteristic data in real time. If any of the following conditions are found: abnormal electricity consumption location, power consumption exceeding the threshold, power consumption exceeding the threshold, or abnormal electricity consumption period, it is determined as abnormal electricity consumption behavior, and an abnormal alarm message is pushed to the bound user terminal.

7. The contactless shared power control method based on NFC identification according to claim 6, characterized in that, The threshold determination rules for abnormal power consumption include: An abnormal power consumption alarm will be triggered immediately if the current power consumption location is different from the historically commonly used power consumption location, the current maximum power consumption exceeds the historical maximum power consumption by 20%, the current power consumption exceeds the historical single maximum power consumption by 100%, or the power consumption start time deviates from the preset commonly used time period.

8. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, It also includes equipment fault monitoring and alarm procedures: The shared power supply device monitors the electrical operation status of the power supply circuit and the tripping status of the leakage protection switch in real time. When an overvoltage, overcurrent, short circuit, or leakage fault is detected and the leakage protection switch is triggered to trip, the power supply circuit is immediately cut off. At the same time, the fault type, fault occurrence time, and fault equipment information are uploaded to the cloud management platform to complete the fault alarm and work order recording.

9. The contactless shared power control method based on NFC identification according to claim 1, characterized in that, It also includes remote equipment maintenance and upgrade steps: The cloud management platform performs remote OTA program upgrades for shared power devices via a 4G communication link. Shared power devices support local Bluetooth-based debugging and maintenance without opening the cover. All remote upgrade and local debugging data are transmitted using hardware encryption.

10. A contactless shared power control device based on NFC identification, used to implement the contactless shared power control method based on NFC identification as described in any one of claims 1-9, comprising a cloud management platform, a user terminal applet, and a plurality of shared power terminal devices, characterized in that: The cloud management platform is used to store user account information, device binding information and user electricity consumption behavior data, and to perform device identity verification, electricity use permission verification, abnormal electricity consumption identification, fee settlement and remote device control. The user terminal applet is connected to the cloud management platform and is used to realize user registration and recharge, order inquiry, abnormal alarm reception, device loss reporting and unbinding operations. The shared power terminal equipment includes a main control module, and an NFC identification module, a 4G communication module, an energy metering module, a load control switch, a safety protection module, and a remote signaling acquisition module, which are respectively connected to the main control module. The NFC identification module is used to monitor the access signal of external NFC devices in real time, read the unique device identifier of the NFC device and upload it. The 4G communication module is used to realize bidirectional encrypted data transmission between the shared power terminal equipment and the cloud management platform; The power metering module is used to collect voltage, current, power, and power consumption parameters of the power supply circuit in real time to complete accurate branch metering; The load control switch is used to automatically control the power supply circuit to switch on and off according to the instructions from the main control module and the cloud. The safety protection module integrates lightning protection, overvoltage protection, overcurrent protection, short circuit protection, and leakage protection functions to achieve fault protection of the power supply circuit; The remote signaling acquisition module is used to monitor the working status of the leakage current protection switch in real time, collect fault signals and upload them synchronously.

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