One-keyboard counting system and method for electric power measurement assets

Abstract

The invention discloses an electric power measurement asset one-keyboard counting system and method. The system comprises a workbench and a data processing end. The working table comprises an RFID (Radio Frequency Identification) table body, and the RFID table body is used for identifying RFID tags in assets; the data processing end comprises an RFID data processing module, a Bluetooth communication encryption module, a data comparison module, a report generation module and the like. The FID data processing module is responsible for filtering, duplicate removal and primary processing of original RFID data. The RFID data processing module dynamically adjusts a signal intensity threshold value identified by the RFID tag by using a dynamic signal intensity threshold value adjustment algorithm according to the change of the environmental noise and the signal intensity; the RFID data processing module utilizes a multi-dimensional tag validity judgment algorithm to comprehensively consider a plurality of factors to judge whether the RFID tag is valid or not. According to the invention, intelligent checking is realized, and the checking efficiency and the data accuracy are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of Internet of Things and relates to an electric power metering asset-keyboard point system and method. Background Art

[0002] As the gateway metering device for the power grid company to conduct trade settlement, power metering assets are one of the most important assets of the power grid company and require reasonable and standardized management. The number of power metering assets is huge and they are stored in warehouses at all levels of the company. If you need to know the status of the metering assets in each warehouse, you need to conduct an asset inventory. It is understood that the previous asset inventory methods are mainly divided into the following: (1) After the system exports the inventory data, use a barcode gun to scan them one by one and compare them one by one in the table. (2) Use a watermark camera to take pictures of the metering assets one by one and submit them to the county company. (3) Company personnel take the exported table to the office to check them one by one. These asset inventory methods have the following defects: first, the data is inaccurate and there may be fabrication and tampering of data to cover up the lost asset information. Second, the efficiency is low and requires a lot of manpower and material resources to compare and process information. Third, it is impossible to synchronize the inventory data to the system database in time to form a report.

[0003] Radio frequency identification is a contactless automatic identification technology that uses the transmission characteristics of radio frequency signals and their spatial coupling to achieve automatic identification of stationary or moving objects. Radio frequency identification is often called inductive electronic chip or proximity card, induction card, contactless card, RFID tag, electronic barcode, etc.

[0004] Bluetooth technology is an open global standard for wireless data and voice communications. It is a special short-range wireless technology connection based on low-cost short-range wireless connection to establish a communication environment for fixed and mobile devices. Summary of the invention

[0005] The purpose of the present invention is to provide a power metering asset-keyboard point system and method, which reads the power metering asset number data through RFID wireless radio frequency identification technology, and transmits the information to the data processing end through wireless Bluetooth technology for comparison and generation of inventory reports and other operations.

[0006] The present invention is implemented by the following technical scheme: an electric power metering asset-keyboard point system, comprising a workbench and a data processing terminal; the workbench comprises an RFID identification platform, and the RFID identification platform is used to identify an RFID tag in an asset;

[0007] The data processing end includes:

[0008] RFID data processing module: responsible for filtering, deduplication and preliminary processing of raw RFID data; the RFID data processing module uses a dynamic signal strength threshold adjustment algorithm to dynamically adjust the signal strength threshold for RFID tag recognition according to changes in environmental noise and signal strength; the RFID data processing module uses a multi-dimensional tag validity judgment algorithm to comprehensively consider multiple factors to determine whether the RFID tag is valid.

[0009] Bluetooth communication encryption module: responsible for secure data transmission;

[0010] Data comparison module: compares the processed RFID data with the system inventory data;

[0011] Report generation module: Generate detailed inventory report based on comparison results;

[0012] Data visualization module: the inventory results are displayed visually in the form of charts;

[0013] System integration interface: data exchange with the enterprise's existing asset management system.

[0014] Further preferably, the dynamic signal strength threshold adjustment algorithm uses a sliding window method to dynamically adjust the signal strength threshold for RFID tag recognition, including:

[0015] Maintain a fixed-size signal strength history window; each time new signal strength data is received, add it to the window; if the window is full, remove the oldest data;

[0016] When the amount of historical data is sufficient, the average signal strength and standard deviation in the window are calculated; the signal strength threshold is dynamically adjusted according to the calculation results;

[0017] The new signal strength threshold calculation formula is:

[0018] New signal strength threshold = average signal strength - 2*standard deviation

[0019] Adjusted signal strength threshold = max(min(new signal strength threshold, maximum signal strength threshold), minimum signal strength threshold);

[0020] The adjusted signal strength threshold is used to determine whether the newly received signal is valid; if the signal strength is greater than or equal to the current signal strength threshold, the signal is considered valid.

[0021] Further preferably, a multi-dimensional tag validity judgment algorithm is used to comprehensively consider multiple factors to determine whether the RFID tag is valid, including:

[0022] Signal strength check: Use the dynamic threshold adjustment algorithm to determine whether the RFID tag signal strength is valid; if the signal strength is lower than the dynamically adjusted signal strength threshold, the RFID tag is directly judged to be invalid;

[0023] Reading frequency check: Set the minimum reading times threshold. If the number of times the tag is read is lower than the minimum reading times threshold, the tag is considered invalid.

[0024] Spatial position evaluation: By analyzing the reading of the same RFID tag by multiple antennas, the rationality of the spatial position of the RFID tag is evaluated; based on the reading intensity distribution and the relationship between the antenna positions, a spatial position score between 0 and 1 is calculated;

[0025] Tag type match check: compare the detected tag type with the expected asset type and calculate a match score between 0 and 1;

[0026] Overall rating:

[0027] The final score is calculated using the weighted average method, and the calculation formula is:

[0028] Total score = spatial position score * position weight + tag type matching score * type matching weight; where position weight and type matching weight are preset parameters;

[0029] Validity judgment:

[0030] A comprehensive score threshold is set; if the total score exceeds this comprehensive score threshold, the RFID tag is determined to be valid; otherwise, it is determined to be invalid.

[0031] Further preferably, the workbench further includes a table bracket, a base and rollers; the table bracket is used to connect and fix the RFID identification table, the table bracket is installed on the base, and the base is equipped with rollers.

[0032] Further preferably, the RFID identification platform includes a communication serial port board, a connecting cable, an RFID reader / writer, and an RFID antenna; when the device is started, the RFID antenna 4 emits a magnetic field to respond to the RFID tag in the asset and receives the barcode number information in the RFID tag, and connects to the RFID reader / writer to realize multi-channel simultaneous data reception and processing to realize the reading and writing functions of the RFID tag; the communication serial port board is connected to the RFID reader / writer through the connecting cable to control the RFID reader / writer and process the received data.

[0033] Further preferably, the interface of the RFID reader includes an antenna interface and a wiring interface of the RFID reader, the antenna interface is connected to the RFID antenna, and the wiring interface is connected to the wiring interface of the communication serial port board.

[0034] Further preferably, the communication serial port board includes a cable interface of the communication serial port board, a power interface, an RS232 serial port interface, and a Bluetooth module; the cable interface of the communication serial port board is connected to the cable interface of the RFID reader. The power interface is connected to the power supply; the RS232 serial port interface is used to connect to a computer or a connectable USB device, and the Bluetooth module is used to send the last received and processed data to the data processing end. The Bluetooth module has an encryption function, and can only be connected to Bluetooth through a keyboard-click function on the data processing end, and cannot be connected in other ways.

[0035] The present invention also provides a method for power metering asset-keyboard point, the steps are as follows:

[0036] Step S1: placing the power metering assets to be counted on the RFID identification workbench;

[0037] Step S2: The RFID reader reads the RFID tag information of the asset through the RFID antenna;

[0038] Step S3: encrypting and transmitting the RFID data to the data processing end via the Bluetooth module;

[0039] Step S4: The data processing end decrypts, processes, filters and removes duplicates of the received RFID data;

[0040] Step S5: Compare the processed data with the system inventory data;

[0041] Step S6: Generate an inventory report, including inventory results and abnormal situation analysis;

[0042] Step S7: Generate a chart of the inventory results through a data visualization module to display the inventory results in an intuitive manner;

[0043] Step S8: Synchronize the inventory results to the asset management system through the system integration interface.

[0044] The present invention uses RFID wireless radio frequency identification technology to read the measurement asset number data and transmits the information to the data processing terminal through wireless Bluetooth technology for comparison and generation of inventory reports. The beneficial effects of the present invention include:

[0045] 1) Improve inventory efficiency: RFID technology can achieve rapid batch identification and greatly improve inventory speed;

[0046] 2) Improve data accuracy: Use automated inventory methods to reduce human errors and improve data reliability;

[0047] 3) Realize real-time data synchronization: Inventory results can be uploaded to the system database instantly, facilitating timely analysis and decision-making;

[0048] 4) Reduce labor costs: reduce the manpower required for manual inventory and improve work efficiency;

[0049] 5) Enhanced data security: Protect sensitive asset information through encrypted transmission and access control. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the overall structure of the workbench of the present invention.

[0051] Figure 2 It is a schematic diagram of the RFID identification platform structure of the workbench of the present invention.

[0052] Figure 3 It is a schematic diagram of the structure of the RFID reader / writer of the RFID identification platform of the present invention.

[0053] Figure 4 It is a schematic diagram of the structure of the communication serial port board of the RFID identification platform of the present invention.

[0054] Figure 5 It is a schematic diagram of the module composition of the data processing end of the present invention.

[0055] Figure 6 The present invention is a flow chart of a keyboard-clicking method for power metering assets.

[0056] In the figure, 1 is the RFID identification platform, 2 is the platform bracket, 3 is the base and roller, 11 is the communication serial port board, 12 is the connecting cable, 13 is the RFID reader, 14 is the RFID antenna, 131 is the antenna interface, 132 is the cable interface of the RFID reader, 111 is the cable interface of the communication serial port board, 112 is the power interface, 113 is the RS232 serial port interface, and 114 is the Bluetooth module. DETAILED DESCRIPTION

[0057] The present invention will be described in detail below with reference to the accompanying drawings.

[0058] Example 1

[0059] An electric power metering asset-keyboard point system includes a workbench and a data processing terminal; Figure 1 As shown, the workbench includes an RFID identification table body 1, a table body bracket 2, a base and rollers 3; the RFID identification table body 1 is used to identify the RFID tag barcode in the asset; the table body bracket 2 is used to connect and fix the RFID identification table body 1, the table body bracket 2 is installed on the base, and the base is equipped with rollers, wherein each corner of the connection position is fixed with 4 hexagon socket screws. The base and rollers are used to save space to stack items and facilitate movement.

[0060] like Figure 2As shown, the RFID identification platform 1 includes a communication serial port board 11, a connecting cable 12, an RFID reader 13, and an RFID antenna 14. When the device is started, the RFID antenna 14 emits a magnetic field to respond to the RFID tag in the asset and receives the barcode number information in the RFID tag. By connecting with the RFID reader 13, multi-channel data is simultaneously received and processed to realize the reading and writing functions of the RFID tag. After the communication serial port board 11 is connected to the RFID reader 13 through the connecting cable 12, it can control the RFID reader 13 and process the received data.

[0061] like Figure 3 As shown, the interface of the RFID reader 13 includes an antenna interface 131 and a cable interface 132 of the RFID reader. The antenna interface 131 is connected to the RFID antenna 14, and the cable interface 132 is connected to the cable interface 111 of the communication serial port board.

[0062] like Figure 4 As shown, the communication serial port board 11 includes a cable interface 111 of the communication serial port board, a power interface 112, an RS232 serial port interface 113, and a Bluetooth module 114. The cable interface 111 of the communication serial port board is connected to the cable interface 132 of the RFID reader 13. The power interface 112 is connected to a 12V3A power supply. The RS232 serial port interface 113 is used to connect to a computer or a connectable USB device, and the Bluetooth module 114 is used to send the last received and processed data to the data processing end. The Bluetooth module 114 has an encryption function. Only by connecting Bluetooth in a keyboard-click function on the data processing end can it be connected, and other methods cannot be connected.

[0063] like Figure 5 As shown, the data processing end includes:

[0064] RFID data processing module: responsible for filtering, deduplication and preliminary processing of raw RFID data;

[0065] Bluetooth communication encryption module: responsible for secure data transmission;

[0066] Data comparison module: compares the processed RFID data with the system inventory data;

[0067] Report generation module: Generate detailed inventory report based on comparison results;

[0068] Data visualization module: the inventory results are displayed visually in the form of charts;

[0069] System integration interface: data exchange with the enterprise's existing asset management system.

[0070] The RFID data processing module is one of the core components of this system, which is mainly responsible for filtering, deduplication and preliminary processing of raw RFID data. This module includes two key algorithms: dynamic signal strength threshold adjustment algorithm and multi-dimensional tag validity judgment algorithm. These two algorithms work together to ensure that the system can accurately identify and process RFID tag data in complex environments.

[0071] The dynamic signal strength threshold adjustment algorithm dynamically adjusts the signal strength threshold for RFID tag recognition according to changes in environmental noise and signal strength. This adaptive method can effectively improve the recognition accuracy of the system in different environments.

[0072] Algorithm principle:

[0073] a) Maintain a sliding window to record the signal strength values ​​read the most recently N times;

[0074] b) calculating the mean and standard deviation of the signal strength within the sliding window;

[0075] c) Dynamically adjust the signal strength threshold based on the mean and standard deviation.

[0076] The algorithm uses a sliding window method to dynamically adjust the signal strength threshold for RFID tag recognition. The main steps include:

[0077] Maintain a fixed-size signal strength history window; each time new signal strength data is received, add it to the window; if the window is full, remove the oldest data.

[0078] When the amount of historical data is sufficient (for example, at least 10 samples), calculate the mean and standard deviation of the signal strength within the window. Use the following formula:

[0079] Average signal strength = Σ(all signal strengths in the window) / window size

[0080] Standard deviation = √[Σ(signal strength - average signal strength)2 / window size]

[0081] The signal strength threshold is dynamically adjusted based on the calculation results.

[0082] The new signal strength threshold calculation formula is:

[0083] New signal strength threshold = average signal strength - 2*standard deviation

[0084] To prevent the signal strength threshold from deviating from a reasonable range, set upper and lower limits:

[0085] The adjusted signal strength threshold = max(min(new signal strength threshold, 80), 20), where 20 and 80 represent the minimum and maximum acceptable signal strength thresholds, respectively.

[0086] The adjusted signal strength threshold is used to determine whether the newly received signal is valid. If the signal strength is greater than or equal to the current signal strength threshold, the signal is considered valid.

[0087] This dynamic adjustment method can adapt to changes in signal strength in different environments and improve the accuracy and reliability of RFID tag recognition. It can effectively reduce misreading and missed reading caused by environmental noise or signal attenuation.

[0088] The multi-dimensional tag validity judgment algorithm comprehensively considers multiple factors to determine whether the RFID tag is valid, not just relying on signal strength. This method can significantly reduce misreading and missed reading.

[0089] The dimensions considered by the multi-dimensional label validity judgment algorithm include:

[0090] a) Signal strength;

[0091] b) Reading frequency;

[0092] c) spatial position (inferred from readings from multiple antennas);

[0093] d) Tag type matching degree.

[0094] Signal strength check:

[0095] The dynamic threshold adjustment algorithm is used to determine whether the tag signal strength is valid. If the signal strength is lower than the dynamically adjusted signal strength threshold, the RFID tag is directly determined to be invalid.

[0096] Read frequency check:

[0097] Set a minimum read count threshold (e.g. 3 times). If the tag is read less than the minimum read count threshold, the RFID tag is considered invalid. This helps filter out interference signals that are captured accidentally.

[0098] Spatial Position Assessment:

[0099] By analyzing the reading of the same RFID tag by multiple antennas, the rationality of the spatial position of the RFID tag is evaluated. According to the distribution of reading intensity and the relationship between the antenna positions, a spatial position score between 0 and 1 is calculated.

[0100] Tag type matching check:

[0101] The detected tag type is compared to the expected asset type and a match score between 0 and 1 is calculated. This helps filter out RFID tags from non-target assets.

[0102] Overall rating:

[0103] The final score is calculated using the weighted average method. The calculation formula is:

[0104] Total score = spatial position score * position weight + label type matching score * type matching weight. Among them, position weight and type matching weight are preset parameters used to adjust the importance of each factor.

[0105] Validity judgment:

[0106] Set a comprehensive score threshold (such as 0.7). If the total score exceeds this comprehensive score threshold, the label is considered valid; otherwise, it is considered invalid.

[0107] The use of a multi-dimensional tag validity judgment algorithm can: reduce misjudgments caused by fluctuations in a single factor (such as signal strength). Improve the accuracy of tag recognition in complex environments. Flexibly adjust the weights of each dimension to meet the needs of different scenarios. Effectively filter out tags of non-target assets and possible interference signals. By comprehensively considering these factors, the algorithm can significantly improve the accuracy and reliability of RFID asset inventory and reduce misreading and missed reading.

[0108] This method ensures that the data is encrypted before transmission, and the data is safe even if it is intercepted during Bluetooth transmission. The Bluetooth adapter is only responsible for transmitting the encrypted data and does not participate in the encryption process.

[0109] In the system implementation, the communication serial port board and the data processing end need to share the device ID in advance, or exchange the device ID securely during the initial connection. The timestamp is used to ensure that the key generated each time is unique, which increases the security of the system.

[0110] The data encryption process of the communication serial port board and the decryption process of the data processing end can be described as follows: Communication serial port board data encryption:

[0111] Key Generation: Create key material using the device ID and current timestamp. Apply the SHA256 hash function to the key material to generate a 128-bit AES key.

[0112] Encryption process: AES-128 algorithm is used in CBC (Cipher Block Chaining) mode. The plaintext data is encrypted using the generated key and an all-zero initialization vector (IV).

[0113] Data processing end decryption process:

[0114] Key Reconstruction: Regenerate key material using the same device ID and timestamp. Apply SHA256 hash function to reconstruct 128-bit AES key.

[0115] Decryption process: Use AES-128 algorithm in CBC mode. Decrypt the ciphertext using the reconstructed key and the same initialization vector.

[0116] Security features: Encryption is done before data transmission, ensuring data security during Bluetooth transmission. Dynamic key generation increases system security, using a unique key for each encryption. Device ID pre-sharing or secure exchange ensures that both encryption and decryption parties can correctly generate keys. The use of timestamps prevents replay attacks and enhances system security.

[0117] This approach achieves end-to-end encryption, so even if the Bluetooth transmission is intercepted, the data remains secure. The Bluetooth adapter only transmits encrypted data and is not involved in the encryption process, simplifying its role and improving the security of the overall system.

[0118] Example 2

[0119] Based on the power metering asset-keyboard point system described in Example 1, Figure 6 As shown, this embodiment provides a method for keyboard-clicking an electric power metering asset, and the specific steps are as follows:

[0120] Step S1: placing the power metering assets to be counted on the RFID identification workbench;

[0121] Step S2: Start the inventory process, and the RFID reader reads the RFID tag information of the asset through the RFID antenna. In this process, the RFID reader reads the tag information at a speed of more than 40 per second;

[0122] Step S3: Encrypt the RFID data and transmit it to the data processing end through the Bluetooth module. The encryption process uses a dynamic key generation method based on device ID and timestamp to ensure the security of data transmission;

[0123] Step S4: The data processing end decrypts, processes, filters and removes duplicates of the received RFID data. In this step, the dynamic signal strength threshold adjustment algorithm and multi-dimensional tag validity judgment algorithm of the RFID data processing module play a key role in ensuring the accuracy of the data;

[0124] Step S5: Compare the processed data with the system inventory data. The data comparison module performs efficient data matching in this step and supports rapid comparison of large-scale data;

[0125] Step S6: Generate an inventory report, including inventory results and abnormal situation analysis. The report generation module plays a role in this step and generates a detailed inventory report;

[0126] Step S7: Generate a chart of the inventory results through a data visualization module to display the inventory results in an intuitive manner;

[0127] Step S8: Synchronize the inventory results to the enterprise's asset management system through the system integration interface to achieve seamless data connection.

[0128] Example 3

[0129] The meter library of a power company stores about 2,000 pieces of power metering equipment, which need to be counted monthly. The specific operation steps of the power metering asset-keyboard point system of the present invention are as follows:

[0130] 1) Move the RFID identification workbench to a corner and turn on the power.

[0131] 2) Start the power metering asset-keyboard point system, and the system automatically performs self-check and initialization.

[0132] 3) The staff placed the electricity metering equipment on the RFID identification table in batches, with about 40 pieces in each batch.

[0133] 4) Start the inventory program through the user interface of the data processing end.

[0134] 5) The RFID reader starts reading the device tags, and each batch of reading takes about 10 seconds.

[0135] 6) Power metering assets - the keyboard point system automatically processes data and compares it with inventory information. In this process, the dynamic signal strength threshold adjustment algorithm of the RFID data processing module ensures reading accuracy in different environments.

[0136] 7) After completing the scanning of all batches, the power metering asset-keyboard point system automatically generates an inventory report.

[0137] The entire inventory process took only 1.5 hours, saving about 90% of the time compared to traditional manual inventory. The inventory accuracy rate reached 99.98%, and the system successfully identified 3 pieces of equipment with abnormal locations. Through the system integration interface, the inventory results were automatically updated to the company's asset management system.

[0138] Example 4

[0139] A city power company needs to conduct an inventory of assets of 20 power supply stations at the same time. Using the power metering asset-keyboard point system of Example 1, the specific operations are as follows:

[0140] 1) Deploy a set of RFID identification workstations in each power supply station.

[0141] 2) The headquarters manager uses the remote control function of the data processing terminal to simultaneously initiate inventory tasks at 10 locations.

[0142] 3) Staff in various locations follow the system prompts and place the equipment on the workbench.

[0143] 4) The system processes RFID data from 10 locations simultaneously. In this process, the Bluetooth communication encryption module ensures the security of data transmission.

[0144] 5) The data processing end summarizes the inventory results of all locations and automatically generates a city-wide asset inventory report.

[0145] 6) Through the data visualization module, the system generates a comparative chart of the asset distribution of each county-level company.

[0146] This cross-regional synchronous inventory was completed within 4 hours, and the headquarters management staff monitored the inventory progress of each location in real time through the system. The system automatically compared the distribution of assets in different locations, providing a scientific basis for resource allocation.

[0147] In view of the problem of inventory of power metering assets, the present invention realizes standardized, efficient and accurate inventory means by combining software and hardware. The overall appearance adopts a movable platform appearance. Considering the floor space and utilization rate, it can be used as a table to place power metering assets or other items when the equipment is idle. In terms of hardware, 6 4db antennas cover the entire platform and are connected to the RFID reader and the control motherboard, and then the Bluetooth is connected to the power supply port and the read-write port of the motherboard. In terms of software, the city company administrator, the county company administrator and the power supply station inventory task executor are set through the one-keyboard point function in the data processing end. The company manager can issue inventory tasks to subordinate units. After the release is completed, the inventory task executor designated by each power supply station will receive a notification and an inventory task work order. After entering the work order, select the warehouse where you are located and connect the Bluetooth of the one-keyboard point workbench of the power metering asset. After completing the inventory operation, you can view your own inventory situation and inventory loss and surplus assets, and after submission, the inventory report will be automatically generated to avoid interference. If the submission is successful, the superior company can also receive the inventory report and view the inventory summary of all its subordinate units.

[0148] Through the description of the above implementation modes, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present invention can be essentially or partly contributed to the prior art in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0149] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric power metering asset-keyboard point system, comprising a workbench and a data processing terminal; the workbench comprises an RFID identification platform, the RFID identification platform is used to identify the RFID tag in the asset; characterized in that: The data processing end includes: RFID data processing module: responsible for filtering, deduplication and preliminary processing of raw RFID data; the RFID data processing module uses a dynamic signal strength threshold adjustment algorithm to dynamically adjust the signal strength threshold for RFID tag recognition according to changes in environmental noise and signal strength; the RFID data processing module uses a multi-dimensional tag validity judgment algorithm to comprehensively consider multiple factors to determine whether the RFID tag is valid. Bluetooth communication encryption module: responsible for secure data transmission; Data comparison module: compares the processed RFID data with the system inventory data; Report generation module: Generate detailed inventory report based on comparison results; Data visualization module: the inventory results are displayed visually in the form of charts; System integration interface: data interaction with the asset management system.

2. The power metering asset-keyboard point system according to claim 1, characterized in that: The dynamic signal strength threshold adjustment algorithm uses a sliding window method to dynamically adjust the signal strength threshold for RFID tag recognition, including: Maintain a fixed-size signal strength history window; each time new signal strength data is received, add it to the window; if the window is full, remove the oldest data; When the amount of historical data is sufficient, the average signal strength and standard deviation in the window are calculated; the signal strength threshold is dynamically adjusted according to the calculation results; The new signal strength threshold calculation formula is: New signal strength threshold = average signal strength - 2*standard deviation Adjusted signal strength threshold = max(min(new signal strength threshold, maximum signal strength threshold), minimum signal strength threshold); The adjusted signal strength threshold is used to determine whether the newly received signal is valid; if the signal strength is greater than or equal to the current signal strength threshold, the signal is considered valid.

3. The power metering asset-keyboard point system according to claim 1 is characterized in that: The multi-dimensional tag validity judgment algorithm comprehensively considers multiple factors to determine whether the RFID tag is valid, including: Signal strength check: Use the dynamic threshold adjustment algorithm to determine whether the RFID tag signal strength is valid; if the signal strength is lower than the dynamically adjusted signal strength threshold, the RFID tag is directly judged invalid; Reading frequency check: Set the minimum reading number threshold, if the tag is read less than the minimum reading number threshold, the tag is judged invalid; Spatial position evaluation: By analyzing the reading of the same RFID tag by multiple antennas, the rationality of the spatial position of the RFID tag is evaluated; based on the reading intensity distribution and the relationship between the antenna positions, a spatial position score between 0 and 1 is calculated; Tag type match check: compare the detected tag type with the expected asset type and calculate a match score between 0 and 1; Overall rating: The final score is calculated using the weighted average method, and the calculation formula is: Total score = spatial position score * position weight + tag type matching score * type matching weight; where position weight and type matching weight are preset parameters; Validity judgment: A comprehensive score threshold is set; if the total score exceeds this comprehensive score threshold, the RFID tag is determined to be valid; otherwise, it is determined to be invalid.

4. The power metering asset-keyboard point system according to claim 1, characterized in that: The workbench also includes a table support, a base and rollers; the table support is used to connect and fix the RFID identification table, the table support is installed on the base, and the base is equipped with rollers.

5. The power metering asset-keyboard point system according to claim 1, characterized in that: The RFID identification platform includes a communication serial port board, a connecting cable, an RFID reader / writer, and an RFID antenna; when the device is started, the RFID antenna 4 emits a magnetic field to respond to the RFID tag in the asset and receives the barcode number information in the RFID tag, and connects to the RFID reader / writer to realize multi-channel simultaneous data reception and processing to realize the reading and writing functions of the RFID tag; the communication serial port board is connected to the RFID reader / writer through the connecting cable to control the RFID reader / writer and process the received data.

6. The power metering asset-keyboard point system according to claim 5, characterized in that: The interface of the RFID reader includes an antenna interface and a cable interface of the RFID reader, the antenna interface is connected to the RFID antenna, and the cable interface is connected to the cable interface of the communication serial port board.

7. The power metering asset-keyboard point system according to claim 5, characterized in that: The communication serial port board includes a cable interface, a power interface, an RS232 serial port interface, and a Bluetooth module; the cable interface of the communication serial port board is connected to the cable interface of the RFID reader; the power interface is connected to the power supply; the RS232 serial port interface is used to connect to a computer or a connectable USB device, and the Bluetooth module is used to send the last received and processed data to the data processing end. The Bluetooth module has an encryption function and can only be connected by connecting Bluetooth through a keyboard-click function on the data processing end. It cannot be connected in other ways.

8. A method for power metering asset-keyboard control based on the power metering asset-keyboard control system according to any one of claims 1 to 7, comprising the following steps: Step S1: placing the power metering assets to be counted on the RFID identification workbench; Step S2: The RFID reader reads the RFID tag information of the asset through the RFID antenna; Step S3: encrypting and transmitting the RFID data to the data processing end via the Bluetooth module; Step S4: The data processing end decrypts, processes, filters and removes duplicates of the received RFID data; Step S5: Compare the processed data with the system inventory data; Step S6: Generate an inventory report, including inventory results and abnormal situation analysis; Step S7: Generate a chart of the inventory results through a data visualization module to display the inventory results in an intuitive manner; Step S8: Synchronize the inventory results to the asset management system through the system integration interface.

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