An intelligent construction site supervision system based on the Internet of Things

Abstract

The present application relates to clean plant construction management technical field, especially to a kind of construction site intelligent supervision system based on Internet of Things, the system includes: state determining module, BIM correlation module, installation judging module, determination module, influence analysis module, plan adjustment module and construction feedback module.The present application is by obtaining multi-dimensional construction data in field and is associated to BIM model construction area state information, and then according to welding detection and isolation release etc. to the area is checked gradually to distinguish the construction and wait for delivery task, on this basis, for the waiting task along BIM topological relationship traceability obstruction its construction's previous key process, and combined with space interference check decision releases the region or matching alternative task in advance, finally through executing feedback retriggering condition determination forms dynamic closed loop, to effectively solve the technical problem that current progress management neglects space occupation dependence and cannot accurately determine subsequent construction window.

Description

Technical Field

[0001] This invention relates to the field of cleanroom construction management technology, and in particular to an intelligent construction site supervision system based on the Internet of Things. Background Technology

[0002] Specialty gas pipelines in semiconductor cleanrooms play a crucial role in transporting high-purity process gases, such as nitrogen, oxygen, hydrogen, inert gases, and corrosive gases, from the gas source station to various process equipment. After the specialty gas pipelines are welded, they must undergo rigorous airtightness testing, cleanliness maintenance, and safety confirmation before the isolation and protection facilities in the construction area can be removed. During this process, even after the pipelines are installed, the corresponding construction area remains occupied and cannot be used for subsequent pipeline construction. However, current construction management methods typically use the installation status of pipeline components and planned time as the basis for judging progress, failing to accurately identify whether the construction area is ready for subsequent construction, resulting in a serious disconnect between the schedule plan and the actual construction window.

[0003] Chinese Patent Application Publication No. CN121638769A discloses a method and system for dynamic scheduling of construction site resources based on BIM and the Internet of Things (IoT). The method includes: generating an initial BIM construction model corresponding to the target construction site, and area display layers corresponding to each construction area within the initial BIM construction model; generating an initial scheduling model based on the initial BIM construction model and the area display layers; responding to dynamic scheduling requests from the scheduling terminal; receiving resource collection information from IoT acquisition terminals for the corresponding construction areas and location collection information from area positioning tags; determining the collection direction for the corresponding construction areas based on the location collection information; and performing resource collection based on the collection direction. The system locates the information and updates the area display layers of the initial BIM construction model to obtain a real-time BIM scheduling model. It receives resource scheduling requests from the scheduling terminal, retrieves the scheduling interface, and sends it to the scheduling terminal. It also receives scheduling information input from the scheduling terminal based on the interface, determines the resource type and its corresponding scheduling attributes, retrieves the corresponding target scheduling strategy based on the scheduling attributes, traverses the real-time BIM scheduling model according to the target scheduling strategy, obtains the target area display layer, target construction area, and target resource location, and generates a scheduling instruction map based on the target area display layer, target construction area, and target resource location, which is then sent to the scheduling terminal.

[0004] Therefore, the proposed BIM and IoT-based dynamic resource scheduling method for construction sites has the following problems: First, the location of resource acquisition information depends entirely on the acquisition direction of the area positioning tags. However, in complex construction sites, multipath effects and signal blockage often lead to deviations in direction calculation, resulting in distorted resource location mapping. Second, both the initial scheduling model and the real-time BIM scheduling model are generated based on predefined area display layers, which cannot dynamically adapt to temporarily divided or merged work surfaces during construction, resulting in structural misalignment between layer updates and actual site boundaries. Summary of the Invention

[0005] To address this, the present invention provides an intelligent construction site supervision system based on the Internet of Things, which overcomes the problem in existing technologies where the construction plan is disconnected from the actual available area on site due to the neglect of the continuous occupation of physical space by the detection and isolation links while only focusing on the completion status of pipeline installation. This is achieved through multi-dimensional construction data analysis and dynamic feedback mechanisms.

[0006] To achieve the above objectives, the present invention provides an intelligent construction site supervision system based on the Internet of Things, comprising: The status determination module is used to determine the construction site status of each special gas pipeline installation area based on the real-time acquisition of on-site construction data during the construction of special gas pipelines in the cleanroom. The BIM association module is used to associate the construction site status with the corresponding special gas pipeline installation area in the BIM model to obtain the installation area status information of each special gas pipeline. The installation judgment module is used to determine whether the installation area corresponding to the special gas pipeline to be installed meets the subsequent installation conditions based on the installation area status information, and to obtain the installation condition judgment result. The determination module is used to determine the workable tasks and the tasks waiting to be delivered based on the determination results of the installation conditions. The impact analysis module is used to determine the preceding pipeline processes that affect the pending delivery task based on the spatial location relationship and process logic relationship of the pipelines in the BIM model, and to determine the preceding key processes that need to be completed first based on the current status of the preceding pipeline processes. The planning adjustment module is used to determine whether the preceding key process meets the conditions for early execution based on the BIM model, generate process adjustment instructions or determine alternative construction tasks, and adjust the construction schedule according to the process adjustment instructions or alternative construction tasks. The construction feedback module is used to re-evaluate the subsequent installation conditions of each pipeline installation area based on the adjusted construction schedule and the newly acquired on-site construction data, so as to update the construction schedule.

[0007] Furthermore, the state determination module includes: The welding status acquisition unit is used to acquire the number of weld joints in the special gas pipeline, the location of completed weld joints, and the welding completion mark to obtain welding status data. The detection status acquisition unit is used to acquire the execution status, completion status and result information of the special gas pipeline airtightness detection, and obtain detection status data. The isolation status acquisition unit is used to acquire the setting and disabling status of clean isolation facilities within the construction area, and obtain isolation facility status data. The protection status acquisition unit is used to acquire the installation and dismantling status of temporary protection facilities in the construction area, and obtain protection facility status data. A status determination unit is used to generate the construction site status based on the welding status data, the detection status data, the isolation facility status data, and the protective facility status data.

[0008] Furthermore, the BIM association module includes: The pipeline model extraction unit is used to extract the pipe diameter information, installation elevation information, connection location information and construction sequence information of the special gas pipeline from the BIM model. The construction area division unit is used to divide the corresponding installation area, inspection area and maintenance operation area in the BIM model based on the pipe diameter information and the installation elevation information, according to the special gas pipeline installation, welding inspection and subsequent maintenance needs. The status association unit is used to associate the construction site status with the corresponding installation area, detection area and maintenance operation area according to the connection location information and the construction sequence information, and generate the installation area status information.

[0009] Furthermore, the installation determination module includes: The welding judgment unit is used to determine whether the welding process of the special gas pipeline corresponding to the target installation area has been completed based on the welding status data. The detection and judgment unit is used to determine whether the air tightness test of the corresponding special gas pipeline has been completed based on the judgment result of the completion of the welding process and the detection status data. An isolation determination unit is used to determine whether the clean isolation facilities in the construction area have been lifted based on the determination results of the airtightness test and the isolation facility status data. The area delivery determination unit is used to determine whether temporary protective facilities have been removed based on the determination result that the isolation facilities have been lifted, and to determine whether the temporary protective facilities have been removed based on the status data of the protective facilities. Based on the determination result that the protective facilities have been removed, the unit determines that the installation area meets the subsequent construction conditions and obtains the installation condition determination result.

[0010] Furthermore, the determination module includes: The workable task determination unit is used to determine the special gas pipeline construction task that can enter the installation process based on the installation conditions. When it is determined that the subsequent construction conditions are met, the workable task is obtained. The waiting task determination unit is used to determine the special gas pipeline construction task that is waiting for the completion of the preceding process based on the installation conditions. When it is determined that the subsequent construction conditions are not met, the unit determines the waiting delivery task. The task association unit is used to associate the special gas pipeline corresponding to the task waiting to be delivered with its corresponding preceding construction procedure to obtain the task association result.

[0011] Furthermore, the impact analysis module includes: A connection relationship determination unit is used to determine the connection relationships between different special gas pipelines based on the BIM model; The construction sequence determination unit is used to determine the installation sequence of different special gas pipelines based on the obtained construction process requirements. The process influencing determination unit is used to determine the preceding influencing processes that hinder the task waiting to be delivered, based on the connection relationship, the installation sequence relationship, and the task association result. The key process extraction unit is used to determine the key preceding processes that need to be completed first, based on the installation area status information corresponding to the preceding influencing processes.

[0012] Furthermore, the plan adjustment module includes: An advance execution determination unit is used to determine the remaining work space of the preceding key process based on the BIM model, and to determine whether the preceding key process meets the advance execution conditions based on the remaining work space. The process advance adjustment unit is used to generate the process adjustment instruction based on the determination result that the preceding key process meets the advance execution conditions; The task switching unit is used to determine the alternative construction task based on the determination result that the preceding key process does not meet the conditions for early execution, according to the workable task. The construction arrangement generation unit is used to adjust the construction arrangement according to the process adjustment instructions or the alternative construction tasks.

[0013] Furthermore, the construction feedback module includes: The status update acquisition unit is used to reacquire the on-site construction data based on the adjusted construction schedule and determine the updated construction site status. A closed-loop triggering unit is used to re-input the updated construction site status to the installation judgment module, determine whether the corresponding installation area meets the subsequent installation conditions, and obtain the updated installation condition judgment result. The construction arrangement update unit is used to update the subsequent special gas pipeline construction arrangement based on the updated installation conditions judgment results.

[0014] Furthermore, the status determination module includes an Internet of Things (IoT) acquisition terminal installed within the special gas pipeline construction area. The IoT acquisition terminal includes: Pipeline identification unit, which is used to obtain the identification information corresponding to the special gas pipeline; The position detection unit is used to acquire information on the positional changes of special gas pipelines, temporary protective facilities, and construction equipment; The status detection unit is used to acquire operational status information of isolation facilities, detection equipment, and protective facilities within the construction area; A communication transmission unit is used to send the identity information, location change information and status information to the status determination module.

[0015] Furthermore, the special gas pipeline includes process gas delivery pipelines for semiconductor cleanrooms; the process gas delivery pipelines include at least: nitrogen pipelines, oxygen pipelines, hydrogen pipelines, inert gas pipelines, and corrosive gas delivery pipelines; the pipeline construction progress management system is used to determine the delivery status of the corresponding installation area according to the welding inspection requirements and construction isolation requirements corresponding to different special gas pipelines.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: When the usability of a cleanroom special gas pipeline construction area cannot be clearly determined due to continuous occupancy for air tightness testing and cleanroom isolation, this invention acquires multi-dimensional construction data from the site and associates it with the status information of the BIM model construction area. Then, based on conditions such as welding inspection and isolation release, the area is checked step by step to distinguish between workable and pending tasks. On this basis, for pending tasks, the key preceding processes that are hindering their construction are traced along the BIM topology relationship. Combined with spatial interference verification, the area is released in advance or a replacement task is matched. Finally, the execution feedback re-triggers the condition determination to form a dynamic closed loop, thereby effectively solving the technical problem of existing progress management being unable to accurately determine subsequent construction windows due to neglecting spatial occupancy dependence. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the IoT-based intelligent construction site supervision system in this embodiment; Figure 2 This is a flowchart illustrating how the status determination module in this embodiment determines the status of the construction site. Figure 3 This is a flowchart illustrating the process of determining the installation conditions by the installation judgment module in this embodiment. Figure 4 This is a flowchart for determining the preceding critical processes in the impact analysis module of this embodiment. Detailed Implementation

[0018] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] Please see Figure 1 As shown, this is a schematic diagram of the IoT-based intelligent construction site supervision system of this embodiment. The system of this embodiment includes: The status determination module is used to determine the construction site status of each special gas pipeline installation area based on the real-time acquisition of on-site construction data during the construction of special gas pipelines in the cleanroom. The BIM association module is used to associate the construction site status with the corresponding special gas pipeline installation area in the BIM model, so as to obtain the installation area status information of each special gas pipeline. The installation judgment module is used to determine whether the installation area corresponding to the special gas pipeline to be installed meets the subsequent installation conditions based on the installation area status information, and obtain the installation condition judgment result. The determination module is used to determine the workable tasks and the tasks awaiting delivery based on the results of the installation condition assessment. The impact analysis module is used to determine the preceding pipeline processes that affect the tasks awaiting delivery based on the spatial location and process logic relationships of pipelines in the BIM model, and to determine whether the preceding key processes meet the conditions for early execution based on the current status of the preceding pipeline processes. The planning adjustment module is used to generate process adjustment instructions to release the corresponding pipeline installation area in advance based on the judgment results of the preceding key processes meeting the conditions for early execution. When the preceding key processes do not meet the conditions for early execution, it determines the alternative construction tasks according to the workable tasks and generates the adjusted construction schedule. The construction feedback module is used to reassess the subsequent installation conditions of each pipeline installation area based on the adjusted construction schedule and the newly acquired on-site construction data, so as to update the construction schedule.

[0021] Specifically, when the usability of a cleanroom special gas pipeline construction area is unclear due to continuous occupancy for airtightness testing and cleanroom isolation, this invention acquires multi-dimensional construction data from the site and links it to the BIM model to construct the area's status information. Then, based on conditions such as welding inspection and isolation release, the area is checked step-by-step to distinguish between workable and pending tasks. On this basis, for pending tasks, the key preceding processes hindering their construction are traced along the BIM topology. Combined with spatial interference checks, the area is released early or a replacement task is matched. Finally, execution feedback triggers a dynamic closed loop, effectively solving the technical problem of existing progress management failing to accurately determine subsequent construction windows due to neglecting spatial occupancy dependencies.

[0022] In this embodiment, the special gas pipeline includes process gas delivery pipelines for semiconductor cleanrooms; the process gas delivery pipelines include at least: nitrogen pipelines, oxygen pipelines, hydrogen pipelines, inert gas pipelines, and corrosive gas delivery pipelines; the pipeline construction progress management system is used to determine the delivery status of the corresponding installation area according to the welding inspection requirements and construction isolation requirements corresponding to different special gas pipelines.

[0023] In this embodiment, the system pre-establishes a construction process parameter library, which is used to store the testing requirements and regional delivery requirements corresponding to different types of special gas pipelines; the parameters in the construction process parameter library are obtained by reading construction design documents, process pipeline construction plans and quality acceptance documents.

[0024] In this embodiment, the welding inspection requirements and construction isolation requirements are obtained by the system directly reading the engineering design documents and special gas construction specifications. Based on the medium type of the special gas pipeline, the system extracts the corresponding pressure holding test duration, leak detection qualification standards, and clean isolation booth level requirements from the engineering design documents as the basis for determining whether the area meets the delivery status.

[0025] Specifically, the construction safety and process requirements for special gas pipelines of different media in semiconductor cleanrooms vary significantly. Their welding inspection time and isolation level have specific stringent requirements, making it difficult for traditional progress management based on uniform quotas to accurately define the actual delivery time of the area. Therefore, by directly converting the above-extracted process parameters into the basis for judging whether the installation area meets the delivery status, the static design specifications are transformed into a differentiated delivery judgment benchmark that can be executed by the system. This ensures that the area delivery judgment strictly matches the actual process characteristics of different special gas pipelines, avoiding the safety hazards caused by blindly handing over the construction area due to substandard pre-inspection or incomplete isolation.

[0026] Please see Figure 2 As shown, this is a flowchart illustrating how the status determination module determines the construction site status in this embodiment. In this embodiment, the status determination module includes: The welding status acquisition unit is used to acquire the number of special gas pipeline welds, the location of completed welds, and welding completion marks by using RFID tags and quality inspection terminals set at the weld joints, thereby obtaining welding status data. The detection status acquisition unit is used to obtain the execution status, completion status and result information of the special gas pipeline air tightness test by connecting to the communication interface of the air tightness test equipment, and obtain the detection status data. The isolation status acquisition unit is used to acquire the setting and deactivation status of the clean isolation facility in the construction area through the door magnetic sensor installed on the clean isolation facility, and obtain the isolation facility status data. The protection status acquisition unit is used to acquire the installation and dismantling status of temporary protection facilities in the construction area through position sensors or infrared detectors installed on the temporary protection facilities, and obtain protection facility status data. The status determination unit is used to identify each status data according to the collected results of welding completion status, inspection completion status, isolation release status, and protection removal status, and to match the special gas pipeline installation area to generate a construction site status that includes the completion status of the process and the area occupancy status.

[0027] In this embodiment, the status determination module includes an Internet of Things (IoT) acquisition terminal located within the special gas pipeline construction area. The IoT acquisition terminal includes: Pipeline identification unit, which is used to obtain the identification information corresponding to the electronic tag or QR code on the special gas pipeline through RFID reader or QR code scanning device; The location detection unit is used to receive the location tag signals attached to the special gas pipeline section, temporary protective facilities and construction equipment through UWB positioning base stations deployed in the construction area, and calculate and obtain the corresponding location change information. In this embodiment, the location change information is not used to determine the movement trajectory of construction personnel or equipment, but to determine whether temporary protective facilities, detection equipment and construction equipment are still in the corresponding installation area, so as to help determine whether the construction area is still occupied.

[0028] The status detection unit is used to obtain the opening and closing status of the clean isolation facility through the reed switch door magnetic sensor, obtain the operating status of the detection equipment through the PLC control interface connected to the airtightness detection equipment, and obtain the removal status information of the protective facility through the infrared or microwave detector to obtain status information. The communication transmission unit is used to send identification information, location change information, and status information to the status determination module.

[0029] Specifically, the construction of special gas pipelines in semiconductor cleanrooms requires strong isolation and relies on manual reporting, leading to data distortion and delays, resulting in a lack of reliable data for assessing the area's status. To address this, by connecting to quality inspection terminals, airtightness testing equipment interfaces, and various sensors, the objective actions of physical facilities are transformed into welding, testing, and isolation status data. Considering that single data sources cannot reflect the overall situation of the area, multi-source data is further analyzed and aggregated to generate the construction site status. Based on this, an IoT acquisition terminal utilizes UWB positioning to calculate location changes and uniformly transmits identification and status information, enabling precise tracking of dynamic processes such as the removal of protective facilities. This provides the system with objective underlying input for accurately defining the actual occupancy and delivery status of the area.

[0030] In this embodiment, the BIM association module includes: The pipeline model extraction unit is used to traverse and query the pipeline components in the BIM model, and read the attribute fields of each pipeline component to obtain the pipe diameter information, installation elevation information, connection location information and construction sequence information corresponding to the special gas pipeline.

[0031] The construction area division unit is used to obtain the pipe outer diameter corresponding to the pipe diameter information by querying the preset pipe specification mapping table. Based on the installation, welding inspection and subsequent maintenance needs of special gas pipelines, the unit uses the pipe centerline as a reference and combines the pipe outer diameter with the preset construction operation spacing to determine the installation operation boundary. The unit then extends the preset range outward at each weld joint to form an inspection area. This generates a corresponding three-dimensional spatial buffer zone along the pipeline route in the BIM model, which is divided into the corresponding installation area, inspection area and maintenance operation area.

[0032] In this embodiment, the construction area is not divided according to fixed building areas, but is dynamically determined based on the physical dimensions of the special gas pipeline and the operating space required for the corresponding construction procedures. Specifically, the installation area represents the actual working range of pipeline installation personnel and equipment, the inspection area represents the layout range of weld inspection and airtightness testing equipment, and the maintenance operation area is the space required for subsequent maintenance operations.

[0033] In this embodiment, the preset pipe specification mapping table is a comparison data table of nominal diameter and actual outer diameter pre-built based on the national standard for industrial pipes. The standardized table lookup replaces manual measurement to ensure that the BIM space calculation uses accurate physical dimensions.

[0034] In this embodiment, the preset construction work spacing is determined based on the cleanroom pipeline installation specifications and the workers' operating space requirements. The physical clearance for construction personnel's positions and tool operation is added on the basis of the pipeline outer diameter to ensure that the generated installation area has actual construction feasibility.

[0035] In this embodiment, the preset range is determined based on the footprint and isolation requirements of the special gas pipeline welding inspection and pressure holding test equipment. In order to meet the independent space requirements of the local inspection process, the inspection area is accurately delineated to avoid excessive occupation of isolation space and affecting the construction of adjacent pipelines.

[0036] The status association unit is used to determine the spatial coordinates and identifiers of each area based on the connection location information and construction sequence information. By matching and mapping the area identifiers or coordinate information carried by the construction site status with the areas in the BIM model, the construction site status is bound to the corresponding installation area, inspection area and maintenance operation area, and installation area status information is generated.

[0037] Specifically, due to the compact spatial layout of special gas pipelines in semiconductor cleanrooms and the large fluctuations in the area occupied by testing and isolation facilities, it is impossible to accurately define the construction area boundary based solely on the pipeline centerline. By superimposing the physical clearance of construction personnel and tools on the outer diameter of this pipeline, an installation area boundary with actual workability is generated. On this basis, considering that weld joint testing requires independent space, the equipment footprint and isolation requirements are further extended outward from the weld joint location to form a testing area. This avoids excessive encroachment of the isolation space on adjacent pipelines. Finally, through the matching and mapping of coordinates and markers, the real-time collected field status is bound to these three-dimensional spatial buffers dynamically generated based on physical dimensions and process requirements. This abandons the extensive management model that ignores spatial conflicts and provides a reliable spatial topology basis for the system to accurately determine whether a specific area is ready for delivery.

[0038] Please see Figure 3 As shown, this is a flowchart illustrating the process by which the installation judgment module determines the installation conditions in this embodiment. In this embodiment, the installation judgment module includes: The welding judgment unit is used to determine whether each weld joint has been marked as completed based on the welding completion mark in the welding status data. If all weld joints have the welding completion mark, the welding process of the special gas pipeline corresponding to the target installation area is determined to be completed. If any weld joint is not marked as completed, the welding process is determined to be incomplete. The inspection and judgment unit is used to determine whether the air tightness test has been completed and passed based on the judgment result of the completion of the welding process and the inspection completion status and inspection result information in the inspection status data. If the inspection status is completed and the inspection result is qualified, the corresponding special gas pipeline is judged to have completed the air tightness test; otherwise, the air tightness test is judged to have not been completed. In this embodiment, the airtightness test status includes at least the test equipment connection status, test execution status, pressure holding status, and test result status; when all of the above statuses meet the corresponding requirements, the airtightness test is determined to be completed.

[0039] The isolation determination unit is used to determine whether the clean isolation facility has been removed based on the determination result of the air tightness test and the isolation facility removal status in the isolation facility status data. If the isolation facility status is removed, it is determined that the clean isolation facility in the construction area has been removed; otherwise, it is determined that the isolation facility has not been removed. The area delivery determination unit is used to determine whether temporary protective facilities have been removed based on the determination result that the isolation facilities have been removed and the removal status of the protective facilities in the protective facility status data. If the protective facility status is removed, it is determined that the protective facilities have been removed and the installation area meets the subsequent construction conditions. Otherwise, it is determined that the protective facilities have not been removed and the installation area does not meet the subsequent construction conditions, thus obtaining the installation condition determination result.

[0040] Specifically, after welding, special gas pipelines in cleanrooms still need to undergo time-consuming airtightness testing and physical isolation removal processes. Traditional progress management only focuses on pipeline installation and easily overlooks these space-occupying aspects. Therefore, it is necessary to verify the completion marks of all welds to ensure physical pipeline connectivity. On this basis, the execution and qualified results of the airtightness test are further verified to eliminate the risk of media leakage. Considering that the clean isolation during the testing period will hinder the subsequent entry of personnel, it is then determined whether the isolation facilities should be switched to the deactivated state. Finally, it is confirmed whether the temporary protective facilities have been completely removed. Through this rigorous sequential verification mechanism, process quality requirements and physical space occupancy status are linked and constrained to ensure that the area is ready for delivery only when all aspects are substantially met.

[0041] In this embodiment, the determination module includes: The constructable task determination unit is used to determine the results based on the installation conditions. When it is determined that the subsequent construction conditions are met, the special gas pipeline construction task in the corresponding installation area is marked as constructable, thus obtaining the constructable task. The waiting task determination unit is used to determine the result based on the installation conditions. When it is determined that the subsequent construction conditions are not met, the special gas pipeline construction task in the corresponding installation area is marked as waiting, and the waiting delivery task is obtained. The task association unit is used to find the corresponding preceding construction procedures based on the connection relationship and installation sequence of the special gas pipelines corresponding to the task to be delivered in the BIM model, and associate the task to be delivered with the found preceding construction procedures to obtain the task association result.

[0042] In this embodiment, since special gas pipelines in cleanrooms are usually constructed in the order of main pipe, branch pipe and equipment connection pipe, the availability of subsequent pipeline installation areas depends not only on their own condition, but also on the release status of adjacent connecting pipe sections and previous installation areas. Therefore, it is necessary to determine the preceding construction procedures corresponding to the tasks waiting to be delivered based on the pipeline connection relationship.

[0043] Specifically, after determining the delivery conditions of a region, on-site tasks will inevitably be differentiated into executable and obstructed tasks. By marking tasks that meet the conditions as constructible and tasks that do not meet the conditions as awaiting delivery, the set of currently obstructed tasks can be identified. Considering that a single awaiting status can only reflect the unavailability of a region and cannot indicate the specific source of the obstruction, the connection relationships and installation sequence in the BIM model are further utilized to find the corresponding preceding construction procedures for awaiting delivery tasks and establish a correlation mapping. Based on the differentiation of task availability, the dependency sources that hinder subsequent construction are accurately identified, providing a clear target for subsequent procedure intervention and plan adjustment.

[0044] Please see Figure 4 As shown, this is a flowchart illustrating the process by which the impact analysis module determines the preceding critical processes in this embodiment. In this embodiment, the impact analysis module includes: The connection relationship determination unit is used to determine the connection relationship between different special gas pipelines by querying the connection end attributes and upstream and downstream relationships of each pipeline component in the BIM model. The construction sequence determination unit is used to determine the installation sequence relationship between different special gas pipelines based on the construction sequence attribute field of the BIM model or the construction process requirements obtained from the external process database. The affected process determination unit is used to determine the preceding affected processes that hinder the waiting delivery task by querying the preceding pipeline processes that the special gas pipeline corresponding to the waiting delivery task depends on, based on the connection relationship, installation sequence relationship and task association results. The key process extraction unit is used to select the process that has not yet met the release conditions and has the highest construction sequence from the preceding affected processes based on the installation area status information corresponding to the preceding affected processes, and determine it as the preceding key process that needs to be completed first.

[0045] In this embodiment, when multiple preceding impact processes exist simultaneously, the process that is currently still occupying the target installation area entrance, detection area, or equipment connection area and has not completed the release condition confirmation is selected as the preceding key process.

[0046] Specifically, the construction network of special gas pipelines in cleanrooms is intricate and complex. A single waiting status is insufficient to reveal the deep-seated causes of progress stagnation. By querying the BIM model to extract the connection relationships and construction sequence attributes of pipeline components, a complete process and topology dependency network is constructed. Based on this, considering that task obstruction usually stems from upstream processes not releasing space, the system then traces the dependency path of the waiting task along this network, accurately identifying the preceding processes that are hindering its construction. Since there may be multiple unfinished nodes in the tracing link, to avoid blind intervention, the current regional status information of each preceding process is further combined to select the core bottleneck process that is at the forefront of the construction sequence and has not met the release conditions as the preceding key process, thus transforming the general progress delay into a precise anchoring of the specific spatial obstruction source.

[0047] In this embodiment, the plan adjustment module includes: The advance execution determination unit is used to obtain the space occupancy information of the BIM model corresponding to the preceding key process, calculate the target work space required for the construction of the preceding key process, compare the target work space with the space occupancy of the already constructed pipes and equipment in the BIM model, determine the remaining unoccupied work space, and determine whether the preceding key process meets the advance execution conditions based on whether the remaining work space meets the minimum construction work surface requirements of the preceding key process.

[0048] In this embodiment, the minimum construction work area requirement is determined based on the special gas pipeline construction specifications and the ergonomic operating space requirements, serving as a quantitative benchmark for objectively judging whether the remaining work space has actual constructability.

[0049] The process advance adjustment unit is used to determine the construction time window that the preceding key process can be inserted in advance based on the judgment result that the preceding key process meets the conditions for early execution, according to the remaining work space, and generate process adjustment instructions containing advance construction time and work surface allocation information by combining the spatial coordinates of the corresponding area in the BIM model. The task switching unit is used to obtain the resource requirement information corresponding to each workable task based on the judgment result that the preceding key process does not meet the conditions for early execution. It compares the resource requirement information of each workable task with the available resources in the current idle resource pool one by one, and determines the workable task that fully meets the resource requirements and has the shortest expected construction time as the alternative construction task.

[0050] In this embodiment, the resource requirements corresponding to the constructable task include: installation area location, required types of work and number of personnel, required equipment type and shifts, and estimated construction time. The above data are obtained from the installation area status information generated by the BIM association module and the construction quota information in the construction organization design document; the available resources in the current idle resource pool are obtained in real time by the construction management information system.

[0051] The construction arrangement generation unit is used to insert the work process adjustment instructions or alternative construction tasks into the corresponding positions on the timeline of the current construction plan, and based on the pipeline installation sequence in the BIM model, to adjust the time nodes of subsequent work processes that are constrained by their dependencies, thereby generating the adjusted construction arrangement.

[0052] Specifically, after identifying the construction bottleneck, considering the limited space for special gas pipeline construction and the potential for interference if construction is forced to be advanced, the system compares the remaining working space with the minimum construction work surface requirements based on BIM space occupancy information to determine whether the preceding key processes can be advanced. When the space conditions are met, the system immediately generates an advance construction instruction based on the regional coordinates to accelerate the release of the target area. Conversely, if space is limited and advance construction is not possible, to avoid the stagnation and idleness of on-site resources, the system extracts the personnel and equipment requirements of the workable tasks and matches them with the current idle resource pool. It then selects the alternative task with the shortest construction time for implementation. Finally, the above adjustments are inserted into the timeline and the subsequent process nodes constrained by the BIM installation sequence are postponed accordingly. This effectively solves the technical problem that traditional static scheduling cannot adaptively adjust when encountering regional blockages, resulting in idle construction resources and project delays.

[0053] In this embodiment, the construction feedback module includes: The status update acquisition unit is used to re-collect welding status data, inspection status data, isolation facility status data and protective facility status data of each construction area through the Internet of Things acquisition terminal in the status determination module, based on the adjusted construction schedule and according to the adjusted construction sequence and time nodes, and to determine the updated construction site status. The closed-loop triggering unit is used to take the updated construction site status as the new input and call the installation judgment module again to trigger the installation judgment module to re-determine whether each installation area meets the subsequent construction conditions based on the updated construction site status, and obtain the updated installation condition judgment result. The construction arrangement update unit is used to re-determine the workable tasks and tasks awaiting delivery based on the updated installation conditions. If the status of the installation area changes, such as the isolation facilities being removed or the protective facilities being taken down, the corresponding construction task will be switched from the waiting state to the workable state, and the subsequent special gas pipeline construction schedule will be updated.

[0054] Specifically, the status of on-site construction will continue to change after the plan is adjusted. If only a single judgment is made, it will be out of touch with reality. By re-collecting various status data according to the new time nodes based on the adjusted arrangement, the updated on-site status is obtained. Considering that the regional delivery conditions may change after the status is updated, the updated status is re-inputted into the installation judgment module to trigger a new round of condition judgment. On this basis, when the status change such as the removal of isolation facilities or the removal of protective facilities is judged, the system immediately switches the waiting status of the corresponding task to the construction-ready status and regenerates the construction arrangement. This enables the system to have a dynamic closed-loop capability based on execution feedback, ensuring that the regional delivery judgment and the actual evolution on site are always synchronized.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An intelligent construction site supervision system based on the Internet of Things, characterized in that, include: The status determination module is used to determine the construction site status of each special gas pipeline installation area based on the real-time acquisition of on-site construction data during the construction of special gas pipelines in the cleanroom. The BIM association module is used to associate the construction site status with the corresponding special gas pipeline installation area in the BIM model to obtain the installation area status information of each special gas pipeline. The installation judgment module is used to determine whether the installation area corresponding to the special gas pipeline to be installed meets the subsequent installation conditions based on the installation area status information, and to obtain the installation condition judgment result. The determination module is used to determine the workable tasks and the tasks waiting to be delivered based on the determination results of the installation conditions. The impact analysis module is used to determine the preceding pipeline processes that affect the task awaiting delivery based on the spatial location and process logic relationships of the pipelines in the BIM model, and to determine the key preceding processes that need to be completed first based on the current status of the preceding pipeline processes. The planning adjustment module is used to determine whether the preceding key process meets the conditions for early execution based on the BIM model, generate process adjustment instructions or determine alternative construction tasks, and adjust the construction schedule according to the process adjustment instructions or alternative construction tasks. The construction feedback module is used to re-evaluate the subsequent installation conditions of each pipeline installation area based on the adjusted construction schedule and the newly acquired on-site construction data, so as to update the construction schedule.

2. The IoT-based intelligent construction site supervision system according to claim 1, characterized in that, The status determination module includes: The welding status acquisition unit is used to acquire the number of weld joints in the special gas pipeline, the location of completed weld joints, and the welding completion mark to obtain welding status data. The detection status acquisition unit is used to acquire the execution status, completion status and result information of the special gas pipeline airtightness detection, and obtain detection status data. The isolation status acquisition unit is used to acquire the setting and disabling status of clean isolation facilities within the construction area, and obtain isolation facility status data. The protection status acquisition unit is used to acquire the installation and dismantling status of temporary protection facilities in the construction area, and obtain protection facility status data. A status determination unit is used to generate the construction site status based on the welding status data, the detection status data, the isolation facility status data, and the protective facility status data.

3. The IoT-based intelligent construction site supervision system according to claim 2, characterized in that, The BIM association module includes: The pipeline model extraction unit is used to extract the pipe diameter information, installation elevation information, connection location information and construction sequence information of the special gas pipeline from the BIM model. The construction area division unit is used to divide the corresponding installation area, inspection area and maintenance operation area in the BIM model based on the pipe diameter information and the installation elevation information, according to the needs of special gas pipeline installation, welding inspection and subsequent maintenance. The status association unit is used to associate the construction site status with the corresponding installation area, detection area and maintenance operation area according to the connection location information and the construction sequence information, and generate the installation area status information.

4. The IoT-based intelligent construction site supervision system according to claim 3, characterized in that, The installation determination module includes: The welding judgment unit is used to determine whether the welding process of the special gas pipeline corresponding to the target installation area has been completed based on the welding status data. The detection and judgment unit is used to determine whether the air tightness test of the corresponding special gas pipeline has been completed based on the judgment result of the completion of the welding process and the detection status data. The isolation determination unit is used to determine whether the clean isolation facilities in the construction area have been lifted based on the determination results of the airtightness test and the isolation facility status data. The area delivery determination unit is used to determine whether temporary protective facilities have been removed based on the determination result that the isolation facilities have been lifted, and to determine whether the temporary protective facilities have been removed based on the status data of the protective facilities. Based on the determination result that the protective facilities have been removed, the unit determines that the installation area meets the subsequent construction conditions and obtains the installation condition determination result.

5. The IoT-based intelligent construction site supervision system according to claim 4, characterized in that, The determination module includes: The workable task determination unit is used to determine the special gas pipeline construction task that can enter the installation process based on the installation conditions. When it is determined that the subsequent construction conditions are met, the workable task is obtained. The waiting task determination unit is used to determine the special gas pipeline construction task that is waiting for the completion of the preceding process based on the installation conditions. When it is determined that the subsequent construction conditions are not met, the unit determines the waiting delivery task. The task association unit is used to associate the special gas pipeline corresponding to the task waiting to be delivered with its corresponding preceding construction procedure to obtain the task association result.

6. The IoT-based intelligent construction site supervision system according to claim 5, characterized in that, The impact analysis module includes: A connection relationship determination unit is used to determine the connection relationships between different special gas pipelines based on the BIM model; The construction sequence determination unit is used to determine the installation sequence of different special gas pipelines based on the obtained construction process requirements. The process influencing determination unit is used to determine the preceding influencing processes that hinder the task waiting to be delivered, based on the connection relationship, the installation sequence relationship, and the task association result. The key process extraction unit is used to determine the key preceding processes that need to be completed first, based on the installation area status information corresponding to the preceding influencing processes.

7. The IoT-based intelligent construction site supervision system according to claim 6, characterized in that, The plan adjustment module includes: An advance execution determination unit is used to determine the remaining work space of the preceding key process based on the BIM model, and to determine whether the preceding key process meets the advance execution conditions based on the remaining work space. The process advance adjustment unit is used to generate the process adjustment instruction based on the determination result that the preceding key process meets the advance execution conditions; The task switching unit is used to determine the alternative construction task based on the determination result that the preceding key process does not meet the conditions for early execution, according to the workable task. The construction arrangement generation unit is used to adjust the construction arrangement according to the process adjustment instructions or the alternative construction tasks.

8. The IoT-based intelligent construction site supervision system according to claim 7, characterized in that, The construction feedback module includes: The status update acquisition unit is used to reacquire the on-site construction data based on the adjusted construction schedule and determine the updated construction site status. A closed-loop triggering unit is used to re-input the updated construction site status to the installation judgment module to determine whether the corresponding installation area meets the subsequent installation conditions and obtain the updated installation condition judgment result. The construction arrangement update unit is used to update the subsequent special gas pipeline construction arrangement based on the updated installation conditions judgment results.

9. The IoT-based intelligent construction site supervision system according to claim 8, characterized in that, The status determination module includes an Internet of Things (IoT) acquisition terminal installed within the special gas pipeline construction area. The IoT acquisition terminal includes: Pipeline identification unit, which is used to obtain the identification information corresponding to the special gas pipeline; The position detection unit is used to acquire information on the positional changes of special gas pipelines, temporary protective facilities, and construction equipment; The status detection unit is used to acquire operational status information of isolation facilities, detection equipment, and protective facilities within the construction area; A communication transmission unit is used to send the identity information, location change information, and status information to the status determination module.

10. The IoT-based intelligent construction site supervision system according to claim 9, characterized in that, The special gas pipelines include process gas delivery pipelines for semiconductor cleanrooms; the process gas delivery pipelines include at least: nitrogen pipelines, oxygen pipelines, hydrogen pipelines, inert gas pipelines, and corrosive gas delivery pipelines; the pipeline construction progress management system is used to determine the delivery status of the corresponding installation area based on the welding inspection requirements and construction isolation requirements corresponding to different special gas pipelines.

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