Asset management method, system, device and medium based on BIM, indoor positioning and RFID

Abstract

The application discloses an asset management method, system and device based on BIM, indoor positioning and RFID, and a medium, relates to the technical field of whole life cycle asset management, and comprises the following steps: using BIM modeling technology, planning the layout of various assets layer by layer in a BIM model; binding the RFID tag of the asset with the virtual RFID tag recorded in the BIM model; continuously tracking the asset position by indoor positioning, and updating the asset management system in real time; providing an instant asset list report, importing and exporting the asset detail list and information; adjusting the asset position according to the requirement, automatically recording the allocation information, forming allocation management, initiating the asset retirement process when the asset reaches the retirement condition, and updating the information in the BIM model. The application improves the efficiency and accuracy of asset management, realizes the whole life cycle management of asset management, from asset modeling, arrangement to real-time tracking and identification, and brings a more efficient, accurate and automated solution for asset management.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of full life cycle asset management, in particular to an asset management method, system, device and medium based on BIM, indoor positioning and RFID. BACKGROUND

[0002] BIM is a digital modeling technology that can describe the properties and location information of each asset in a building through a three-dimensional model. RFID is a sensor technology that can read the information in the tag attached to an object without touching the object. Based on the principles of the above two technologies, an RFID tag can be added to each asset. The earliest method is to paste a two-dimensional code and associate it with the BIM model. After the asset is purchased, an RFID tag with a printed two-dimensional code is attached to the asset, and its relevant information is read and recorded in the database. When the asset is taken, it can be continuously monitored and recorded through indoor positioning to ensure that it is always in a controlled state during the entire use cycle.

[0003] The present application discloses a method based on the combination of BIM and ultra-high frequency RFID technology, which can record relevant information at the asset purchase, taking, transfer and scrap stages through indoor positioning, realize the use tracking of the asset full life cycle, and improve the asset utilization rate. The technical problems solved are as follows:

[0004] Real-time asset tracking: asset tracking is difficult in large and complex building environments. Traditional manual tracking asset management methods are inefficient and prone to errors. The combination of BIM, indoor positioning and RFID technology can track the location of assets in real time and accurately, solving the problem of widely distributed assets that are difficult to quickly locate. Through indoor positioning and RFID technology, the location of assets can be tracked in real time, thereby improving the visibility and security of assets.

[0005] Asset management optimization: asset utilization is not high, and there is no effective data analysis support, making it difficult to reasonably arrange and allocate assets, resulting in resource waste. BIM and positioning data analysis can reveal asset usage patterns, helping to optimize resource allocation and improve asset utilization. Using BIM technology, asset information can be better managed, including maintenance records, specifications and locations, thereby optimizing asset management processes.

[0006] Reduce asset loss: security and loss prevention, asset loss or theft is a common problem for enterprises. The combination of RFID and indoor positioning technology can monitor asset dynamics in real time, and combined with the access control system to achieve security control, effectively reducing the risk of asset loss. Through real-time tracking and unique identification, the risk of asset loss or theft can be reduced.

[0007] Efficiency improvement: Asset inventory efficiency is low, and the previous manual periodic asset inventory is time-consuming and prone to errors. This technology greatly improves the efficiency and accuracy of inventory through automated inventory means, especially the large-scale and fast scanning capability of RFID. Automated data collection and management processes can improve the efficiency of asset management, reduce human errors and time waste.

[0008] Precise asset positioning: Indoor positioning technology can help ensure that assets are accurately positioned, improving the accuracy of asset search and management.

[0009] In summary, the asset management full life cycle management technology based on BIM, indoor positioning and RFID has broad application prospects. This technology can help organizations better manage and utilize assets, improve the efficiency of asset management, the safety of storage during use, and the accuracy of positioning identification and tracking.

[0010] This technology effectively solves the problems of efficiency, accuracy, safety and decision support in asset management through digital and intelligent means, and is a key technical solution to cope with the complexity of modern asset management. SUMMARY

[0011] In view of the above problems, the present application is proposed.

[0012] Therefore, the problem to be solved by the present application is: how to solve the problem of low efficiency and easy error of the manual tracking asset management method.

[0013] To solve the above technical problems, the application provides the following technical solutions: an asset management method based on BIM, indoor positioning and RFID, comprising: in a design and planning stage, constructing a BIM model; in an asset procurement and deployment stage, procuring assets according to the BIM model and deploying the assets to the site; in a use and maintenance stage, continuously tracking the asset positions by indoor positioning and updating the asset management system in real time; in an asset inventory and audit stage, performing rapid and automatic inventory of assets in a certain area by using an RFID reader; in an asset allocation and disposal processing stage, performing allocation management and disposal processing; the design and planning stage comprises: using BIM modeling technology to plan the layout of various assets layer by layer in the BIM model, assigning virtual RFID tags to each preset asset and recording in the BIM model, constructing an asset database, recording an asset detail list and detailed information, performing preliminary layout design, space utilization analysis, process optimization, simulation and evaluation on each layer according to asset requirements, and finally confirming the asset layout; the space utilization analysis comprises using safety distance evaluation data between devices to perform space utilization analysis and determining the specific safety distance required for maintenance and normal use of each asset; if the safety distance evaluation data between devices is greater than or equal to a safety distance evaluation threshold, the safety distance between assets and between assets and building structures meets the requirements, the space utilization is reasonable, and if the safety distance evaluation data between devices is less than the safety distance evaluation threshold, the safety distance is insufficient, and the layout needs to be adjusted.

[0014] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the preliminary layout design comprises quantitatively displaying the space use efficiency of the asset layout scheme through space efficiency evaluation; if the space efficiency is lower than a space efficiency target value, the space utilization rate is not high, and the layout needs to be optimized again; the process optimization comprises quantifying the functional correlation and physical distance between assets through function proximity data.

[0015] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the actual effect of the asset layout is verified by a simulation tool; the final confirmation of the asset layout comprises final evaluation according to asset access efficiency data; the assets comprise furniture and equipment; the asset database comprises recording asset procurement processes, recording asset use processes, recording asset detail lists and detailed information, and recording asset function processes.

[0016] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the asset deployment includes generating a demand list for asset procurement according to asset layout information recorded in the BIM model, pasting or embedding RFID tags on physical assets, deploying assets to the site according to the BIM asset layout plan, inputting asset management system by reading RFID tag information, and binding the RFID tag of the asset with the virtual RFID tag recorded in the BIM model; the ID of the physical RFID tag is input or scanned in the BIM model, the ID of the physical RFID tag is associated with the virtual RFID tag ID of the corresponding asset layout asset in the BIM model, and the binding information is saved and backed up after system test and function test confirm the association is correct; the system test includes checking whether the physical tag and the virtual tag match for each asset if the physical RFID and virtual RFID tag information of all assets have been input into the system, evaluating asset tag consistency, obtaining an overall consistency score, evaluating the overall accuracy of tag binding according to the consistency score, and checking and correcting the unmatched tags if the consistency score is lower than the asset tag consistency score threshold, and performing detailed analysis on the unmatched assets to determine the cause of the mismatch, recalculating the consistency score after correcting the problem until the consistency score threshold is reached, and taking the consistency score as part of regular monitoring; the function test includes testing whether the asset management system can accurately track and manage assets according to RFID tags.

[0017] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the indoor positioning continuously tracks asset location, including continuously tracking asset location by indoor positioning, updating to the asset management system in real time, automatically sending maintenance reminders by the asset management system according to asset use and maintenance period, updating maintenance records to the corresponding asset information of the BIM model and the asset database by reading RFID through a handheld device or updating maintenance records to the background after maintenance is completed; signals from Wi-Fi and UWB devices are received at the same time, Wi-Fi provides preliminary positioning information, and UWB provides distance measurement; when the asset enters the reading range of the RFID receiver, the RFID tag is activated and sends an identification code to the receiver, and as the asset moves in the room, the asset management system receives and processes signals from Wi-Fi and UWB devices in real time, and continuously updates asset location information.

[0018] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the automatic inventorying comprises data automatic comparison with the BIM model, providing an instant asset list report, and importing and exporting asset details and information; for the RFID reader bound in the room, when the asset is within the effective range of the RFID reader, the reader automatically identifies the RFID tag on the asset and records the unique identification code and other related information of the tag; the comparison comprises that the asset information read by the RFID reader is instantly uploaded to the asset management system, the actual inventory data is compared with the asset layout of the BIM model, through the comparison, the missing, redundant or position error assets are identified, an instant asset list report is provided, and the importing and exporting of asset details and information are performed.

[0019] As a preferred scheme of the asset management method based on BIM, indoor positioning and RFID, the allocation management comprises adjusting the asset position according to the demand, automatically recording the allocation information, forming the allocation management, initiating the asset retirement process when the asset reaches the retirement condition, performing verification and approval, synchronously updating the detailed information of the corresponding asset in the asset database, and updating the information in the BIM model; according to the demand, the asset layout is re-planned in the BIM model, the asset position is adjusted, and the allocation management is formed; the retirement condition comprises calculating the retirement evaluation data in combination with the actual service life, the maintenance frequency in the last year and the maintenance cost in the last year; the asset retirement threshold is set, if the retirement evaluation data is less than the asset retirement threshold, the asset does not reach the retirement condition, and the asset retirement is not performed, if the retirement evaluation data is greater than or equal to the asset retirement threshold, the asset reaches the retirement condition, the asset retirement process is initiated, verification and approval are performed, the detailed information of the corresponding asset in the asset database is synchronously updated, and the information in the BIM model is updated.

[0020] Another object of the present application is to provide a system of the asset management method based on BIM, indoor positioning and RFID, which can solve the asset management problem based on BIM, indoor positioning and RFID by constructing the asset management system.

[0021] To solve the above technical problems, the application provides the following technical scheme: an asset management system based on BIM, indoor positioning and RFID, comprising a design planning module, which is used for planning the layout of various assets layer by layer in a BIM model in a design and planning stage by using a BIM modeling technology, assigning a virtual RFID tag to each preset asset and recording in the BIM model, and constructing an asset database to record an asset detail list and detailed information; an asset procurement and deployment module, which is used for generating a demand list for asset procurement according to the asset layout information recorded in the BIM model in an asset procurement and deployment stage, procuring assets, pasting or embedding RFID tags on the physical assets, deploying the assets to the right place according to the BIM asset layout planning, binding the RFID tags of the assets with the virtual RFID tags recorded in the BIM model by reading the RFID tag information and entering the asset management system; an asset use and maintenance module, which is used for continuously tracking the asset position by indoor positioning in a use and maintenance stage, and updating to the asset management system in real time, and automatically sending a maintenance reminder by the asset management system according to the asset use condition and maintenance period, and updating the maintenance record to the asset information and asset database corresponding to the BIM model by reading the RFID by a handheld device or the background after the maintenance is completed; an asset inventory and audit module, which is used for quickly and automatically inventorying the assets in a certain area by using an RFID reader in an asset inventory and audit stage, automatically comparing the data with the BIM model, providing an instant asset list report, and importing and exporting the asset detail list and information; and an asset allocation and scrapping module, which is used for adjusting the asset position according to the demand in an asset allocation and scrapping processing stage, automatically recording the allocation information to form an allocation management, and initiating an asset scrapping process when the asset reaches a scrapping condition, verifying and approving, synchronously updating the detailed information of the corresponding asset in the asset database, and updating the information in the BIM model.

[0022] A computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the steps of the asset management method based on BIM, indoor positioning and RFID when executing the computer program.

[0023] A computer readable storage medium, which stores a computer program, and the computer program implements the steps of the asset management method based on BIM, indoor positioning and RFID when executed by a processor.

[0024] The BIM-based, indoor positioning and RFID-based asset management method provided by the application not only improves the efficiency and accuracy of asset management, but also brings long-term cost savings and risk control benefits to enterprises, and is an important trend of modern asset management. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The flowchart of the BIM-based, indoor positioning and RFID-based asset management method provided by the first embodiment of the application.

[0027] Figure 2 The database and model design planning diagram of the BIM-based, indoor positioning and RFID-based asset management method provided by the first embodiment of the application.

[0028] Figure 3 The asset procurement deployment diagram of the BIM-based, indoor positioning and RFID-based asset management method provided by the first embodiment of the application.

[0029] Figure 4 The asset use management diagram of the BIM-based, indoor positioning and RFID-based asset management method provided by the first embodiment of the application.

[0030] Figure 5 The structural diagram of the BIM-based, indoor positioning and RFID-based asset management system provided by the second embodiment of the application. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the drawings.

[0032] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the application, therefore the application is not limited to the specific embodiments disclosed below.

[0033] Embodiment 1

[0034] Reference Figures 1-4 For the first embodiment of the present application, the embodiment provides a BIM, indoor positioning and RFID-based asset management method, including: in the design and planning stage, constructing a BIM model; in the asset procurement and deployment stage, procuring assets according to the BIM model and deploying the assets to the site; in the use and maintenance stage, continuously tracking the asset location by indoor positioning and updating to the asset management system in real time; in the asset inventory and audit stage, using RFID readers to quickly and automatically inventory the assets in a certain area; in the asset allocation and disposal processing stage, performing allocation management and disposal processing.

[0035] Application of BIM technology:

[0036] Design and planning stage: BIM provides a three-dimensional digital platform for asset management, allowing assets to be pre-arranged and simulated during the design and construction stages of the building. This not only optimizes space utilization, but also ensures that all assets are accurately planned at the beginning of construction, reducing the cost and time of subsequent adjustments.

[0037] Asset entry and information integration: In the BIM model, each asset can be treated as a separate object, with detailed information such as model, specifications, supplier information, maintenance records, etc., forming a comprehensive BIM database containing physical characteristics and management information.

[0038] Role of indoor positioning technology:

[0039] Real-time tracking of asset location: Combined with indoor positioning technologies such as Wi-Fi, UWB (Ultra-Wideband), it is possible to accurately locate the position of each asset within the building. This is particularly important for large and complex facilities such as hospitals, schools, and office buildings, allowing for quick asset search and dispatch, improving response efficiency.

[0040] Integration of RFID technology:

[0041] Automatic identification and inventory: RFID tags are attached to each asset, and through RFID readers, assets can be quickly scanned and identified without direct line-of-sight contact, achieving batch automatic inventory, greatly reducing human error and inventory time.

[0042] Access control and security monitoring: Combined with the access control system, RFID can also be used to monitor the entry and exit of assets, preventing unauthorized movement or theft, and enhancing asset security.

[0043] For example, Figure 1As shown, the asset model BIM information center database and the asset database detail list information center database receive and output data of procurement, deployment in the asset procurement and deployment stage, taking, returning in the use and maintenance stage, inventory, audit in the asset inventory and audit stage, allocation, transfer and asset scrapping in the asset allocation and scrapping processing stage; the procurement, deployment, taking, returning, allocation, transfer and asset scrapping data update the asset location information, the asset location is determined according to the real-time positioning tracking and the asset location information, and the asset location is determined according to the asset location and the ultra-high frequency RFID tag transmission into the database center and the comparison of the positioning information.

[0044] S100, in the design and planning stage, a BIM model is constructed.

[0045] In the design and planning stage, BIM modeling technology is used to plan the layout of various assets layer by layer in the BIM model, assign virtual RFID tags to each preset asset and record them in the BIM model, construct an asset database, and record the asset detail list and detailed information.

[0046] Specifically, in the design and planning stage, BIM modeling technology is used to plan the layout of various assets, including furniture, equipment, etc., in the BIM model, and virtual RFID tags are assigned to each preset asset and recorded in the BIM model. An asset database is constructed, the asset detail list and detailed information are recorded, and the basic function flow is recorded.

[0047] It should be noted that before starting BIM modeling, all relevant building and asset data, including the structure, size, existing facility layout of the building, etc., need to be collected. At the same time, the specific requirements of asset management, such as asset type, intended use, safety requirements, etc., are understood.

[0048] Further, a BIM software (such as Autodesk Revit or Graphisoft ArchiCAD) is used to create a three-dimensional model of the building according to the collected data. This model will include all building elements (walls, floors, ceilings, etc.) and mechanical, electrical, plumbing systems (MEP).

[0049] According to the asset requirements, preliminary layout design, space utilization analysis, process optimization, simulation and evaluation are performed for each floor to finally confirm the asset layout. For example, Figure 2 As shown, the database and model design planning stage includes BIM modeling 120 and asset database 110. The BIM modeling 120 creates a BIM database, recording asset model information including size 121, mass 122, virtual RFID tag 123 and brand 124, etc. The asset database 110 includes recording asset procurement process 111, recording asset use (taking, returning, allocation, inventory, scrapping) process 112 and recording asset detail list detailed information 113.

[0050] Further, asset layout planning is conducted in the BIM model according to project requirements. This includes determining the location of assets, space utilization, and safety intervals. Tools and functions of BIM software, such as "room book" or "design automation", are used to help place and adjust assets.

[0051] Further, space efficiency and safety distance analysis are conducted using formulas and the BIM model. The space efficiency index (SEI) is calculated to evaluate the space use efficiency of the asset layout scheme. At the same time, the safety distance between each asset and between the asset and the building structure is ensured to meet or exceed the standard.

[0052] The preliminary layout design includes a quantitative demonstration of the space use efficiency of the asset layout scheme through space efficiency evaluation. If the space efficiency is lower than the target value of space efficiency, the space utilization is not high and the layout needs to be optimized.

[0053] In a preferred embodiment, the preliminary layout design quantitatively demonstrates the space use efficiency of the asset layout scheme through space efficiency index evaluation, ensuring the rational distribution of assets and the maximum utilization of space, represented as:

[0054]

[0055] wherein, is the space efficiency index, is the total used area, the total area occupied by all assets planned in the BIM model, is the total available area, the total area of the entire facility in the BIM model.

[0056] If is lower than the target value, the space utilization is not high and the layout needs to be optimized; for the target value of SEI, it should be determined according to industry standards and internal requirements of the enterprise.

[0057] The space utilization analysis is conducted using safety distance evaluation data between equipment, according to the specific safety distance required for maintenance and normal use of each asset. If the safety distance evaluation data between equipment is greater than or equal to the safety distance evaluation threshold, the safety distance between assets and between the asset and the building structure meets the requirements, and the space utilization is reasonable. If the safety distance evaluation data between equipment is less than the safety distance evaluation threshold, the safety distance is insufficient and the layout needs to be adjusted.

[0058] In a preferred embodiment, the space utilization analysis uses safety distance compliance for space utilization analysis, according to the specific safety distance required for maintenance and normal use of each asset, to ensure that the asset layout meets safety standards and prevents safety problems caused by close layout between assets or between the asset and the building structure, represented as:​

[0059] ,

[0060] wherein, is the safety distance compliance, is the actual safety distance for each asset, is the specific safety distance required for each asset for maintenance and normal use;

[0061] If is greater than or equal to 1, the safety distance between assets and between assets and building structures meets the requirements, and the space utilization is reasonable, if is less than 1, the safety distance is insufficient, and the layout needs to be adjusted; the safety distance standard can be determined according to relevant safety specifications and standards (such as national or industry safety standards).

[0062] The functional proximity data quantifies the functional association and physical distance between assets.

[0063] In a preferred embodiment, the process optimization quantifies the functional association and physical distance between assets through the functional proximity index, helps to optimize the asset layout, and improves the efficiency of the work process, which is represented as:

[0064] ,

[0065] wherein, is the total number of assets, is the functional proximity index, is the functional correlation weight of asset and asset , which is determined according to functional complementarity, work process requirements and physical dependency, is the distance of asset and asset in the model.

[0066] The functional proximity index should exceed the required functional proximity index threshold as much as possible to ensure the proximity between functionally related assets, if is lower, it means that the distance between functionally related assets is farther, and the layout needs to be optimized. The functional correlation weight and distance should be determined according to actual business requirements and operation processes.

[0067] Simulation and evaluation verify the actual effect of asset layout through simulation tools.

[0068] In a preferred embodiment, the simulation and evaluation verify the actual effect of the asset layout through the simulation tool Autodesk Navisworks, observe potential problems in operation and make adjustments, if the simulation results show that the operation process is smooth, there is no bottleneck or conflict, then the asset layout is reasonable, adjust the layout according to the simulation results until the operation is smooth.

[0069] Finally, the asset layout is finally evaluated according to the asset access efficiency data.

[0070] In a preferred embodiment, the final confirmation of the asset layout is finally evaluated according to the asset access efficiency index, which is represented as:

[0071] ,

[0072] Wherein, is the asset access efficiency index, is the usage frequency of the asset, is the distance of the asset from the nearest personnel flow points (such as entrances, exits, offices, etc.).

[0073] If the asset access efficiency index (AAI) is higher than threshold value, it ensures the convenience of access to high-frequency use assets, and ensures that the layout scheme is reviewed and confirmed to meet the actual operation requirements. If the asset access efficiency index (AAI) is lower than threshold value, it means that the access to high-frequency use assets is not convenient and needs to be optimized. The usage frequency and distance of high-frequency use assets should be determined according to the actual use.

[0074] The asset database records the asset procurement process, records the asset use process, records the asset detail list and detailed information, and records the process of basic functions of the asset.

[0075] Further, after all the analysis and simulation are completed, the asset layout is finally confirmed. Update the BIM model, record the detailed information of the asset and the layout adjustment. At the same time, create an asset database, including the detail list and related information of all assets.

[0076] S200, in the asset procurement and deployment phase, according to the BIM model, the assets are procured and deployed in place.

[0077] ​In the asset procurement and deployment phase, a detailed demand list is generated based on the asset layout information recorded in the BIM model. This list will include the type, quantity, specifications, and procurement costs of the required assets.

[0078] According to the asset layout and virtual RFID tag information of each asset planned in the S100 phase in the BIM model, a detailed demand list is generated. This list will include the type, quantity, specifications, and procurement costs of the required assets.

[0079] Further, according to the demand list, assets are procured. Market research is conducted, appropriate suppliers are selected, and procurement is completed according to the budget and quality requirements. Ensure that the purchased assets meet the specifications and standards set in the BIM model.

[0080] When the assets arrive at the site, a detailed receiving and inspection process is carried out. Verify against the procurement list and technical specifications of the assets to ensure that all assets meet the predetermined quality and specification requirements.

[0081] Further, RFID tags are attached or embedded to physical assets. The RFID tag of each asset should correspond to the virtual RFID tag information assigned to it in the BIM model. The tag should contain the unique identification code of the asset and other related information such as location, maintenance period, etc.

[0082] Further, according to the BIM asset layout planning, the assets are deployed in place. Ensure that each asset is placed according to the specific location in the BIM model, taking into account safety distance and operational convenience.

[0083] Specifically, as shown in Figure 3 the asset procurement and deployment phase includes exporting asset model information from the BIM database 210, procuring assets 220, entering asset database, configuring RFID tags 221, and binding RFD tags 222 corresponding to the BIM database.

[0084] Enter or scan the ID of the physical RFID tag in the BIM model, associate the ID of the physical RFID tag with the virtual RFID tag ID of the asset corresponding to the asset layout in the BIM model, and perform system testing and functional testing to confirm that the association is correct. Save the binding information and make backup after association is correct.

[0085] System test: If the physical RFID and virtual RFID tag information of all assets have been entered into the system, check whether the physical tag and the virtual tag of each asset match, evaluate the asset tag consistency, get the overall consistency score, evaluate the overall accuracy of tag binding according to the consistency score, if the consistency score is lower than the asset tag consistency score threshold, check and correct the mismatched tags, for the mismatched assets, carry out detailed analysis to determine the reason for the mismatch, recalculate the consistency score after correcting the problem, until the consistency score threshold is reached, take the consistency score as part of the regular monitoring, and ensure that the newly introduced asset tags can also maintain a high level of consistency.

[0086] In a preferred embodiment, the asset tag consistency score ATCS is represented as:

[0087] ,

[0088] wherein, is the asset tag consistency score, is the asset execution function, if the physical RFID tag of the asset matches the virtual RFID tag, it is 1, if the physical RFID tag of the asset does not match the virtual RFID tag, it is 0.

[0089] Function test: Test whether the asset management system can accurately track and manage assets according to the RFID tag. Determine the list of functions that need to be tested, including asset tag binding, location tracking, asset status update, maintenance reminder, etc., generate or prepare test data, including asset information with different states and conditions, for each function, design and execute specific test cases, for example, verify whether the system can accurately identify and display the location of different assets, record the response and behavior of the system, check whether it is consistent with the expectation, for the problems found, record detailed information, analyze the reasons, and record possible solutions.

[0090] In a preferred embodiment, the function coverage FCR is used to evaluate the function test coverage of the asset management system. The higher the FCR value, the more complete the system function coverage, the higher the system stability and reliability, represented as:

[0091] ,

[0092] wherein, is the function coverage, is the number of test cases successfully executed, is the total number of test cases.

[0093] Further, after all tests are completed, a final confirmation of asset deployment is made. The BIM model is updated to reflect every detail of the actual deployment, and the asset database is updated in sync. Detailed deployment documentation is prepared, including asset inventory, deployment location, RFID tag information, and system test results.

[0094] S300, in the use and maintenance phase, indoor positioning continuously tracks asset location, and updates to the asset management system in real time.

[0095] In the use and maintenance phase, indoor positioning continuously tracks asset location, and updates to the asset management system in real time. The asset management system automatically sends maintenance reminders based on asset usage and maintenance cycles. After maintenance is completed, the maintenance record is updated to the BIM model corresponding asset information and asset database through handheld device reading RFID or background.

[0096] Further, select appropriate locations to install Wi-Fi access points to cover the entire target area. Wi-Fi access points are mainly used to provide basic positioning information and network coverage. Deploy UWB anchors in key locations in the room. UWB anchors should be evenly distributed to ensure that assets can be covered by at least three anchors no matter where they are located, so that accurate distance measurement can be performed. Deploy RFID readers in the room and bind them to the room.

[0097] Further, ensure that all RFID readers in the room are working properly and bound to the room to ensure that asset location can be tracked in real time. Check and update RFID tag information to ensure that data in the asset management system is synchronized with actual conditions, including location, status, and maintenance records.

[0098] At the same time, receive signals from Wi-Fi and UWB devices. Wi-Fi provides preliminary positioning information, while UWB provides more accurate distance measurement.

[0099] Ensure that data collected from Wi-Fi and UWB is synchronized in time so that the information can be accurately fused and processed. Use filtering algorithms such as Kalman filter to process Wi-Fi and UWB data to remove noise and possible errors and improve data quality.

[0100] When the asset enters the reading range of the RFID receiver, the RFID tag is activated and sends an identification code to the receiver. As the asset moves within the room, the asset management system receives and processes signals from Wi-Fi and UWB devices in real time, constantly updating the asset's location information.

[0101] RSSI and UWB ToF data, using multi-sensor data fusion techniques to estimate the location. This fusion is usually done in a weighted manner, where UWB data is usually given a higher weight due to its high accuracy. Triangulation using Wi-Fi data provides a rough estimate of the location, which is then refined and confirmed using UWB data for trilateration.

[0102] Further, according to the use of the asset and the manufacturer's recommendations, set the maintenance cycle of each asset. The asset management system automatically sends maintenance reminders to the relevant departments or personnel according to the set maintenance cycle. After maintenance, read the RFID using a handheld device or update the maintenance record to the corresponding asset information of the BIM model and the asset database in the background.

[0103] S400, in the asset inventory and audit phase, use RFID readers to quickly and automatically inventory assets in a certain area.

[0104] In the asset inventory and audit phase, use RFID readers to quickly and automatically inventory assets in a certain area, automatically compare data with BIM models, provide immediate asset inventory reports, and import and export asset detail lists and information.

[0105] Specifically, according to the type and importance of the asset, a regular inventory plan is developed. The plan should include the frequency of inventory, responsible personnel, and required tools. Check the functionality and coverage area of all RFID readers to ensure they can cover all critical areas and are in good working condition.

[0106] Further, when the inventory plan is executed, activate the RFID readers in the room to automatically scan the RFID tags of all assets in the area. The RFID reader will automatically identify the RFID tag on the asset and record the unique identification code and other related information. The asset information read by the RFID reader is immediately uploaded to the asset management system, which will automatically compare the actual inventory data with the asset layout in the BIM model and the asset database.

[0107] Automatic inventory includes RFID readers bound in the room, which automatically identify the RFID tag on the asset and record the unique identification code and other related information when the asset is within the effective range of the RFID reader.

[0108] The asset information read by the RFID reader is immediately uploaded to the asset management system, which compares the actual inventory data with the asset layout in the BIM model. Through comparison, missing, redundant or incorrectly positioned assets are identified, immediate asset inventory reports are provided, and asset detail lists and information are imported and exported.

[0109] Specifically, the asset management system compares the actual inventory data with the pre-set asset data in the BIM model, identifying missing, excess or misplaced assets. For any abnormalities found, the system will generate a detailed report and notify relevant management personnel for further verification or adjustment. According to the abnormal report, necessary asset adjustment such as repositioning, maintenance or replacement is carried out, and the BIM model and asset database are updated to reflect these changes.

[0110] Specifically, after completing the inventory, a detailed asset inventory report is generated, including asset status, location and any issues that need attention. Based on the inventory results and historical data, analyze and identify deficiencies in management processes, and develop improvement measures to optimize future asset management and inventory activities.

[0111] Finally, regularly backup asset database and inventory data to ensure data security and availability in case of disaster recovery. Implement necessary data security measures to prevent unauthorized access or data leakage.

[0112] S500, in the allocation and disposal phase of the asset, carry out allocation management and disposal.

[0113] In the allocation and disposal phase of the asset, adjust the asset location according to the demand, automatically record the allocation information, form the allocation management, when the asset reaches the disposal condition, initiate the asset disposal process, carry out verification and approval, update the detailed information of the corresponding asset in the asset database, and update the information in the BIM model.

[0114] Further, according to the business development and internal demand, evaluate the assets that need to be allocated. Involved in the expansion, reduction or optimization of space and resource use. Design a detailed asset allocation plan, including target location, list of allocated assets and schedule.

[0115] Asset use management such as Figure 4As shown, asset usage management includes asset check-out and return S300, asset inventory audit S400, asset allocation and transfer 510, and asset retirement 520. Asset check-out and return S300 requires filling out an application form 310, including applicant name 311, storage location 312, etc. Asset information 320 is updated synchronously with asset user information 321, and the asset check-out and return process 322 is recorded. The corresponding information of the BIM model is updated synchronously 323. Asset inventory audit S400 requires filling out an inventory table 410, including inventory person 411, asset range 412, etc. The RFID reader automatically reads 420, compares the read data with the BIM model data 421, and generates an asset list report 422. Asset allocation and transfer 510 requires filling out an allocation form 511 and asset information 512. Allocation form 511 includes information such as post-allocation storage location 511a and use custodian 511b. Asset information 512 includes synchronously updated asset user information 512a, storage location information 512a, asset allocation and transfer process information 512b, and BIM model corresponding information 512c. Asset retirement 520 requires filling out a retirement form 521, including retirement reason 521a, retirement time 521b, etc. Retirement approval 522 is conducted, asset conditions are verified 522a, asset database 522b and BIM model corresponding asset information 522c are updated synchronously.

[0116] According to the allocation requirements, the asset layout is re-planned in the BIM model, the asset position is adjusted, and the allocation management is formed.

[0117] Further, the scheduled new position of the asset is updated in the BIM model to ensure that the allocation plan meets the space planning and safety requirements. The asset is physically moved to the new position. RFID system is used to update the asset position information in real time during the process. The new position and status of the asset are updated in the asset management system and the BIM model to ensure that all records accurately reflect the current status of the asset.

[0118] According to the actual use of the asset, maintenance history and performance data, it is evaluated whether the asset meets the retirement conditions. A retirement evaluation index (DS) is calculated using a formula to determine whether the asset has reached the retirement threshold. For assets that meet the retirement conditions, a retirement approval process is started. This includes submitting a retirement proposal, conducting necessary approvals, and recording all relevant decisions. The retired asset is disposed of safely and ensures compliance with all environmental and regulatory requirements. This may involve recycling parts, destroying sensitive data, etc.

[0119] The scrap condition includes calculating scrap evaluation data in combination with the actual service life, the number of maintenance in the last year and the maintenance cost in the last year, setting an asset scrap threshold, if the scrap evaluation data is less than the asset scrap threshold, the asset does not reach the scrap condition, and the asset is not scrapped, if the scrap evaluation data is greater than or equal to the asset scrap threshold, the asset reaches the scrap condition, the asset scrap process is initiated, verification and approval are carried out, the detailed information of the corresponding asset in the asset database is updated synchronously, and the information in the BIM model is updated.

[0120] In a preferred embodiment, the scrap condition calculates a scrap evaluation index in combination with the actual service life, the number of maintenance in the last year and the maintenance cost in the last year, which is represented as:

[0121] ,

[0122] wherein, is the scrap evaluation index, is the actual service life, is the expected service life, is the number of maintenance in the last year, is the expected annual maintenance number under normal conditions, is the maintenance cost in the last year, is the original price of the asset.

[0123] An asset scrap threshold is set, if is less than the asset scrap threshold, the asset does not reach the scrap condition, and the asset is not scrapped, if is greater than or equal to the asset scrap threshold, the asset reaches the scrap condition, the asset scrap process is initiated, verification and approval are carried out, the detailed information of the corresponding asset in the asset database is updated synchronously, and the information in the BIM model is updated.

[0124] Further, it is ensured that the BIM model and the asset information in the asset management system reflect the latest allocation and scrap status. It is ensured that the assets are accurately tracked and managed. Detailed information of all allocation and scrap activities is recorded, including date, involved assets and any related financial impact.

[0125] Throughout the asset life cycle, data analysis and decision support can be carried out, the BIM model of the asset, indoor positioning and RFID system continuously collect data on the use of the asset, the data is analyzed, reports on use efficiency, maintenance cost, etc. are generated, and finally, according to the analysis results, decision support is provided for asset management strategies, budget allocation, etc. This process covers the complete cycle from asset planning to final decommissioning, and each step embodies the coordinated work of BIM, indoor positioning and RFID technology to achieve efficient whole life cycle asset management.

[0126] Full Lifecycle Management Optimization: From asset procurement, installation, usage, maintenance to retirement, every aspect of the asset's life cycle is monitored and managed to maximize its value. The integrated nature of BIM technology ensures smooth information transfer across stages, enhancing the continuity and completeness of asset management.

[0127] Real-Time Tracking and Location: Utilizing indoor positioning technology, each room is equipped with an RFID receiver, which is tied to the room. This allows for the rapid determination of an asset's real-time location, which is crucial for large facilities such as hospitals, warehouses, and factories. This enables a swift response to asset demands, thereby increasing asset utilization.

[0128] Automation and Intelligence: RFID technology enables the automation of asset inventory and tracking, significantly reducing human error and inventory time, and improving work efficiency. Automated data collection reduces the need for human resources, allowing managers to focus on higher-value tasks.

[0129] Accurate Inventory Control: With a real-time updated asset database, businesses can accurately monitor inventory levels, avoiding overstocking or shortages, effectively controlling costs and optimizing inventory levels.

[0130] Maintenance and Preventive Management: The system can automatically remind asset maintenance or repair, reducing unexpected failures, extending asset life, and reducing maintenance costs.

[0131] Decision Support: The integrated data platform provides a wealth of data analysis for management, helping to make more accurate investment decisions, resource allocation, and future planning.

[0132] Enhanced Security: The uniqueness of RFID tags helps prevent asset theft or misuse, while indoor positioning technology can quickly locate lost assets, enhancing asset security.

[0133] Visual Management: BIM's 3D visualization function makes asset management more intuitive, facilitating understanding and communication, especially in complex building environments. It clearly displays asset distribution, aiding decision-making.

[0134] Compliance and Audit Support: The system's transparency and traceability help meet regulatory requirements, simplify audit processes, and quickly provide accurate asset reports.

[0135] Example 2

[0136] Reference Figure 5For the second embodiment of the present application, which is different from the previous embodiment, a BIM, indoor positioning and RFID-based asset management is provided, including: a design planning module 100, an asset procurement deployment module 200, an asset use and maintenance module 300, an asset inventory audit module 400, and an asset allocation and scrap module 500.

[0137] The design planning module 100 is used to use BIM modeling technology to plan the layout of various assets layer by layer in the BIM model during the design and planning stage, assign virtual RFID tags to each preset asset and record them in the BIM model, build an asset database, and record the asset list and detailed information.

[0138] Specifically, during the design and planning stage, BIM (Building Information Modeling) modeling technology is continued to be used to build a three-dimensional model of the entire facility. This includes all building elements (walls, floors, ceilings, etc.) and mechanical, electrical, and plumbing systems (MEP). The layout of various assets such as furniture, office equipment, medical equipment, etc. is planned layer by layer in the BIM model. Virtual RFID tags are assigned to each asset, and detailed asset information such as asset model, specifications, expected service life, etc. is recorded in the model.

[0139] Further, an asset database is constructed, which will contain the asset list and detailed information of each asset derived from the BIM model. The asset information in the database should be consistent with the virtual RFID tag information in the BIM model, ensuring that the data in the asset management system is accurate and reliable.

[0140] Intelligent planning of asset layout using BIM model, applying algorithms and tools to analyze and optimize space utilization, safety distance and asset access efficiency.

[0141] Further, ensure that the design planning module is closely integrated with other modules such as the asset procurement deployment module, asset use and maintenance module, etc., and that information flows freely. After the actual deployment, maintenance or allocation of assets, the BIM model and asset database should be updated in real time to reflect the latest status and location of all assets.

[0142] The asset procurement deployment module 200 is used to generate a demand list for asset procurement according to the asset layout information recorded in the BIM model during the asset procurement and deployment stage, to purchase assets, to paste or embed RFID tags on physical assets, to deploy assets to the right place according to the BIM asset layout planning, and to bind the RFID tags of the assets with the virtual RFID tags recorded in the BIM model by reading the RFID tag information and entering it into the asset management system.

[0143] Specifically, according to the asset layout in the BIM model completed in the design planning module 100, a detailed procurement requirement list is automatically exported from the asset database. This list includes detailed information of each required asset, such as type, quantity, specification, and preset virtual RFID tag information. The information in the list should ensure complete correspondence with the data in the BIM model, ensuring that the procured assets can accurately match the pre-planned layout and configuration requirements.

[0144] Further, an RFID tag is attached to or built into each physical asset. Ensure that the unique identification code of each tag corresponds one-to-one with the pre-allocated virtual RFID tag information in the BIM model. By scanning the RFID tag, the physical tag information of the asset is entered into the asset management system and bound with the virtual RFID tag in the BIM model. This ensures the consistency of information between the virtual model and the actual physical asset.

[0145] According to the asset layout planning in the BIM model, the assets are deployed one by one to their designated locations. During the deployment process, the BIM model is used for visual guidance to ensure that each asset is placed accurately. The placement position of the asset and the accuracy of the RFID tag binding are verified using a mobile device or a handheld RFID reader, ensuring that the physical location of all assets is completely consistent with the record in the BIM model.

[0146] System-level testing is conducted, including RFID tag reading accuracy testing and asset management system data synchronization testing. Verify that the asset management system can accurately track and manage the status and location of each asset, while ensuring that the maintenance reminders and status update functions in the system are functioning properly.

[0147] Further, after completing asset deployment, update the BIM model to reflect the actual deployment details of each asset and synchronize the asset database. Make detailed deployment documents, including asset list, deployment location, RFID tag information, and system test results, to provide a basis for subsequent maintenance and auditing. Regularly backup asset data and system configuration to ensure data security and availability in the event of disaster recovery.

[0148] The asset use and maintenance module 300 is used to track the location of the asset continuously during use and maintenance, and update it to the asset management system in real time. The asset management system automatically sends maintenance reminders according to the asset usage and maintenance period, and after maintenance is completed, the RFID is read by the handheld device or the maintenance record is updated to the BIM model corresponding asset information and asset database through the background.

[0149] Specifically, the indoor positioning technologies such as Wi-Fi and Ultra-Wideband (UWB) systems set in the design planning module 100 are used and expanded to ensure that the location of assets inside the entire facility can be accurately tracked. The positioning system is integrated with the asset management system to update the location data of the assets in real time. The system is configured to receive signals from the positioning devices and process the location information using multi-sensor data fusion technology.

[0150] Further, the use status and location changes of each asset are continuously tracked using data read from the RFID tags attached to the assets. The system should be able to automatically update the asset status, such as in use, maintenance, or idle, and reflect it in the asset management system and BIM model.

[0151] The maintenance cycle and repair schedule of the assets are set based on the manufacturer's recommendations and historical usage data. The asset management system should automatically send reminders to the maintenance team based on the set maintenance cycle, using mobile applications or email to notify relevant personnel.

[0152] After maintenance or repair is completed, the maintenance record is updated by reading the RFID with a handheld device or directly in the asset management system. The updated data should be synchronized to the corresponding asset information in the BIM model to maintain data consistency and accuracy.

[0153] The asset inventory audit module 400 is used to conduct a quick and automatic inventory of assets in a certain area during the asset inventory and audit phase using RFID readers. The data is automatically compared with the BIM model to provide an instant asset list report and import and export asset details and information.

[0154] Specifically, the RFID technology previously bound is used to configure the automated inventory system. The system automatically identifies the passing asset tags through the RFID readers installed at key locations, achieving quick and automated inventory. Ensure that all RFID tags of assets are functioning properly, and regularly test and calibrate the RFID system to ensure the accuracy of the readings.

[0155] Further, during the planned inventory cycle, the RFID readers are activated for automatic inventory. The readers will scan and record the RFID tags of assets and automatically upload the data to the asset management system. The inventory data is automatically compared with the asset records in the BIM model, and the system checks the existence, location accuracy, and status consistency of the assets.

[0156] The system automatically identifies any abnormalities found during the inventory, such as incorrect asset location, missing or extra assets. For detected abnormalities, a detailed exception report is generated to notify the management personnel for further verification or adjustment.

[0157] The system provides a generation tool for asset inventory reports, including detailed information such as the current status, location, and usage of assets. It supports the import and export of asset details and information, facilitating data exchange with other financial or operational management systems.

[0158] The system records detailed logs of all inventory and audit activities, including date, operator, inventory results, etc., ensuring the traceability of audits. Set up audit tracking functions to review historical inventory data and operation paths when necessary, for compliance verification and internal audits.

[0159] The asset allocation and retirement module 500 is used to adjust the location of assets according to demand during the allocation and retirement process of assets, automatically record the allocation information, form the allocation management, and initiate the asset retirement process when the asset reaches the retirement condition. Verify and approve, update the detailed information of the corresponding asset in the asset database, and update the information in the BIM model.

[0160] Specifically, according to the data provided by the asset use and maintenance module and the asset inventory and audit module, analyze the usage frequency, maintenance history and location information of each asset to determine the assets that need to be allocated. Design the allocation plan, including the target location of the asset, the scheduled timetable and the required resources, to ensure that the allocation operation does not affect the daily operation.

[0161] Further, using BIM models and asset management systems ensures the update of asset locations during the allocation process. Simulate the new layout of assets in the BIM model before physically moving the assets, predict and solve possible space or operation conflicts. Physically allocate assets to new locations and use RFID technology to update asset location information in real time, ensuring that the data in the asset management system is consistent with the physical location.

[0162] According to the maintenance records of the asset use and maintenance module and the data of the asset inventory and audit module, evaluate the condition and performance of the asset to determine whether it meets the retirement condition. Use the formula to calculate the retirement evaluation index (DS), and determine whether the asset should be retired based on the parameters such as service life, maintenance frequency and maintenance cost.

[0163] For assets that meet the retirement condition, start the retirement approval process, including submitting a retirement proposal, conducting necessary approvals, and recording all related decisions. Safely dispose of retired assets, ensuring compliance with all environmental and regulatory requirements, which may involve recycling parts, destroying sensitive data, etc.

[0164] After the allocation or retirement of assets, update the relevant information in the asset database and BIM model in a timely manner to reflect the latest status and location of the assets. Ensure the accuracy and consistency of all asset information in the system to facilitate future operations and decision-making.

[0165] Finally, periodically assess the efficiency and effectiveness of the asset allocation and decommissioning module by analyzing pre- and post-allocation operational data and maintenance costs to measure module performance. Generate detailed reports summarizing the outcomes and learning points from the allocation and decommissioning activities.

[0166] Embodiment 3

[0167] One embodiment of the present application, which is different from the previous two embodiments, is:

[0168] Specifically, the BIM tool is integrated into the software for creating and editing asset layouts. Through the user interface (UI), users are allowed to assign virtual RFID tags to each asset and record these data in the asset database. Automatically generate the demand list based on the BIM model asset layout, support the entry of RFID tag data and the binding operation with the BIM model. Real-time tracking of asset location and status, providing accurate updates through integrated indoor positioning systems. Regularly send maintenance reminders automatically. Automatically activate RFID readers, scan and identify assets, and compare data with the BIM model to generate inventory reports. Support the development and implementation of allocation plans, automatically update the BIM model and asset database, and initiate and manage asset decommissioning processes.

[0169] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products, which are stored in a storage medium and include instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0170] The logic and / or steps represented in flow diagrams or otherwise described herein, for example, can be considered as a sequence of executable instructions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical), and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example via an optical scanner, then compiled, interpreted, or otherwise processed, and stored in a computer memory in a form that can be later executed by a computer. In this context, a "computer-readable medium" can be any means that can store the program for use by or in connection with the instruction execution system, apparatus, or device.

[0171] More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical), and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example via an optical scanner, then compiled, interpreted, or otherwise processed, and stored in a computer memory in a form that can be later executed by a computer.

[0172] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented, for example, using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies, known in the art, or combinations thereof, can be used: discrete logic circuitry having logic gates for implementing logic functions upon an application of data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0173] Example 4

[0174] A fourth embodiment of the present application, which is different from the first three embodiments, is to verify the technical effects adopted in the present application, to verify the true effects of the present method.

[0175] The same building is simulated simultaneously using the method of the present application and the conventional method.

[0176] This embodiment selects a modern office building with a total construction area of 6,000 square meters as the experimental scene. The building has three floors, including the following functional areas: office area, conference area, public area, and storage area.

[0177] The office area is about 1,400 square meters per floor, with a total of 150 office workstations and related equipment (such as office desks and chairs, computers, printers, file cabinets, etc.). The conference area is about 300 square meters per floor, with a total of 8 conference rooms, each equipped with audio and video equipment, whiteboards, and conference tables and chairs. The public area includes a tea room, rest area, etc., occupying about 300 square meters, with assets such as water dispensers, coffee machines, sofas, etc. The storage area is located on the first floor and is used to store spare equipment and consumables, occupying about 600 square meters.

[0178] The total number of assets is 750, covering both fixed assets and consumables, with an average unit price of 5,000 yuan RMB.

[0179] Traditional method group:

[0180] Asset purchase and registration: After purchasing assets, manual records asset information in paper or electronic form and pastes a two-dimensional code label on the asset. Asset allocation and positioning: manually allocates assets to each room according to paper or electronic form and records location information. Use and maintenance: maintenance plan is manually recorded and reminded by manual according to fixed period, and fault is reported by user. Asset inventory: manual inventory is conducted once a quarter, and inventory method is to scan two-dimensional code one by one and check form record. Scrap disposal: manually judges and fills out scrap approval form according to asset use time and maintenance history recorded by manual.

[0181] Inventive method group:

[0182] Asset purchase and registration: using the inventive method, generating procurement list based on BIM model, pasting or embedding RFID tag after purchasing assets, and binding with BIM model. Asset allocation and positioning: automatically deploying assets and updating location information in real time according to preset asset layout of BIM model, and continuously tracking through indoor positioning technology. Use and maintenance: automatically sending maintenance reminders according to use record and preset maintenance period, and automatically updating record through RFID scanning after completing maintenance. Asset inventory: automatically scanning and inventorying every month by using fixedly installed RFID reader, and generating report by comparing with BIM model data in real time. Scrap disposal: automatically triggering scrap process according to set scrap evaluation conditions (such as use time and maintenance cost), and updating BIM model and asset database.

[0183] This embodiment detects using both traditional method and inventive method, and the detection comparison results are shown in Table 1 below:

[0184] Table 1 Comparison table of traditional method and the method of the present application

[0185] Item Inventive method Traditional method Asset registration time 3 days (automated registration) 15 days (manual entry) Asset allocation time 2 days (BIM automated layout) 10 days (manual allocation) Asset inventory cycle Monthly automated inventory (1 hour) Quarterly manual inventory (3 days) Inventory accuracy 99.90% 90% Asset loss rate 0.50% 2% Disposal processing cycle 2 hours (automated process) 3 days (manual process) Asset utilization 95% 75% Decision support capability High (real-time data analysis) Low (no real-time analysis capability) Security High (real-time monitoring) Low (manual record) Total cost savings 25% reduction —

[0186] The method of the present application realizes significant time saving in the process of asset purchase registration, distribution, inventory and disposal, especially in the inventory link, the monthly automatic inventory only needs 1 hour, while the manual inventory of the traditional method needs 3 days.

[0187] The inventory accuracy rate is improved from 90% of the traditional method to 99.90%, and the asset loss rate is reduced from 2% to 0.50%, which greatly reduces the risk of asset management.

[0188] The method of the present application provides strong support for asset management decision-making through BIM model and real-time data analysis, and the transparency of automatic recording greatly improves the audit and compliance ability.

[0189] Through comparison of experimental data, it can be seen that the method of the present application is significantly superior to the traditional method in efficiency, accuracy, safety and cost saving, especially in large-scale asset management scenarios, which can significantly improve the operation efficiency of enterprises and reduce risks. This proves the wide applicability and practical value of the present application in modern asset management.

[0190] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A method for asset management based on BIM, indoor positioning and RFID, characterized in that: Comprising, In the design and planning stage, build a BIM model; In the asset procurement and deployment stage, according to the BIM model, carry out asset procurement, and deploy assets to the site; In the use and maintenance stage, indoor positioning continuously tracks asset location and updates to the asset management system in real time; In the asset inventory and audit stage, use RFID readers to quickly and automatically inventory assets in a certain area; In the asset allocation and disposal processing stage, carry out allocation management and disposal; The design and planning stage comprises, Using BIM modeling technology, planning asset layout layer by layer in the BIM model, assigning virtual RFID tags to each preset asset and recording in the BIM model, building an asset database, and recording asset detail list and detailed information; According to asset demand, preliminary layout design, space utilization analysis, process optimization, simulation and evaluation of each layer are carried out to finally confirm the asset layout; The space utilization analysis includes using the safety distance evaluation data between devices to analyze the space utilization, and determining the specific safety distance required for maintenance and normal use of each asset; If the safety distance evaluation data between devices is greater than or equal to the safety distance evaluation threshold, the safety distance between assets and between assets and building structure meets the requirements, and the space utilization is reasonable, if the safety distance evaluation data between devices is less than the safety distance evaluation threshold, the safety distance is insufficient, and the layout needs to be adjusted; The preliminary layout design includes quantitatively displaying the space utilization efficiency of the asset layout scheme through space efficiency evaluation; If the space efficiency is lower than the space efficiency target value, the space utilization rate is not high, and the layout needs to be optimized; The process optimization includes quantifying the functional correlation and physical distance between assets through functional proximity data; The simulation and evaluation includes, Verify the actual effect of asset layout through simulation tools; The final confirmation of asset layout includes final evaluation according to asset access efficiency data; The assets include furniture, equipment; The asset database includes recording asset procurement process, recording asset use process, recording asset detail list and detailed information, and recording asset function process; The deployment of assets to the site comprises, According to the asset layout information recorded in the BIM model, generate a demand list for procurement, paste or embed RFID tags on physical assets, deploy assets to the site according to BIM asset layout planning, input asset management system through RFID tag information reading, bind the RFID tag of the asset with the virtual RFID tag recorded in the BIM model; Input or scan the ID of the physical RFID tag in the BIM model, associate the ID of the physical RFID tag with the virtual RFID tag ID of the asset layout asset in the BIM model, perform system test and function test to confirm that the association is correct, save the binding information and make backup; ​ The system test includes checking whether the physical tag and the virtual tag of each asset match if the physical RFID and virtual RFID tag information of all assets have been entered into the system, evaluating asset tag consistency, obtaining an overall consistency score, evaluating the overall accuracy of tag binding according to the consistency score, if the consistency score is lower than the asset tag consistency score threshold, checking and correcting the mismatched tags are needed, for the mismatched assets, detailed analysis is performed to determine the cause of the mismatch, the consistency score is recalculated after the problem is corrected until the consistency score threshold is reached, and the consistency score is taken as part of the regular monitoring; The function test includes testing whether the asset management system can accurately track and manage assets according to the RFID tag; The indoor positioning continuously tracks the asset position, including, The indoor positioning continuously tracks the asset position, and the asset management system is updated in real time, the asset management system automatically sends maintenance reminders according to the asset usage and maintenance period, and after the maintenance is completed, the RFID is read through the handheld device or the maintenance record is updated to the asset information corresponding to the BIM model and the asset database in the background; At the same time, signals from Wi-Fi and UWB devices are received, Wi-Fi provides preliminary positioning information, and UWB provides distance measurement; When the asset enters the reading range of the RFID receiver, the RFID tag is activated and sends an identification code to the receiver, as the asset moves in the room, the asset management system receives and processes signals from Wi-Fi and UWB devices in real time, and continuously updates the position information of the asset; The automatic inventory includes, The data is automatically compared with the BIM model to provide an instant asset inventory report, and the import and export of asset details and information are performed; For the RFID reader bound in the room, when the asset is in the effective range of the RFID reader, the reader automatically identifies the RFID tag on the asset and records the unique identification code and other related information of the tag; The comparison includes that the asset information read by the RFID reader is instantly uploaded to the asset management system, the actual inventory data is compared with the asset layout of the BIM model, through the comparison, the missing, redundant or position error assets are identified, an instant asset inventory report is provided, and the import and export of asset details and information are performed; The preliminary layout design is evaluated by the space efficiency index, which quantitatively shows the space use efficiency of the asset layout scheme, ensures the reasonable distribution of assets and the maximum utilization of space, and is represented as: where SEI is the space efficiency index, S u S is the total used area, the total area occupied by all assets planned in the BIM model, a S is the total available area, the total area of the entire facility in the BIM model. If the SEI is lower than the SEI target value, the space utilization is not high, and the layout needs to be optimized again; The space utilization analysis uses safety distance compliance to analyze the space utilization, which is determined according to the specific safety distance required for maintenance and normal use of each asset, to ensure that the asset layout meets the safety standards and prevents safety problems caused by too close layout between assets or between assets and building structures, and is represented as: where SDC is a safety distance compliance, d a is the actual safety distance for each asset, d n is the specific safety distance required for maintenance and normal use of each asset; If the SDC is greater than or equal to 1, the safety distance between assets and between assets and building structures meets the requirements, and the space utilization is reasonable, if the SDC is less than 1, the safety distance is insufficient, and the layout needs to be adjusted again; The process optimization quantifies the functional correlation and physical distance between assets by the functional proximity, helps to optimize the asset layout, and improves the efficiency of the work process, which is expressed as: where n is the total number of assets, FAI is the functional proximity index, W ij is the functional correlation weight of asset i and asset j, determined according to functional complementarity, workflow requirements, and physical dependencies, D ij is the distance of asset i and asset j in the model.

2. The BIM, indoor positioning and RFID based asset management method of claim 1, wherein: The allocation management comprises, According to the demand, the asset position is adjusted, the allocation information is automatically recorded, the allocation management is formed, when the asset reaches the scrap condition, the asset scrap process is initiated, the verification and approval are performed, the detailed information of the corresponding asset in the asset database is updated synchronously, and the information in the BIM model is updated; According to the demand, the asset layout is re-planned in the BIM model, the asset position is adjusted, and the allocation management is formed; The scrap condition comprises calculating scrap evaluation data in combination with the actual service life, the number of maintenance in the last year, and the maintenance cost in the last year; A threshold value of asset scrap is set, if the scrap evaluation data is less than the threshold value of asset scrap, the asset does not reach the scrap condition, the asset scrap is not performed, if the scrap evaluation data is greater than or equal to the threshold value of asset scrap, the asset reaches the scrap condition, the asset scrap process is initiated, the verification and approval are performed, the detailed information of the corresponding asset in the asset database is updated synchronously, and the information in the BIM model is updated.

3. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor implements the steps of the BIM, indoor positioning and RFID-based asset management method in any one of claims 1 to 2 when the computer program is executed.

4. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program implements the steps of the BIM, indoor positioning and RFID-based asset management method in any one of claims 1 to 2 when executed by the processor.

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