BIM-based power plant inspection personnel positioning management method and system

Abstract

The application discloses a power plant inspection personnel positioning management method and system based on BIM, and relates to the technical field of positioning management.The method comprises the following steps: connecting a personnel positioning system to collect inspection personnel positioning information and positioning tracking signals; identifying signal structure features and positioning space structure features based on a power plant BIM model, and constructing an auxiliary positioning analysis model; tracking the signal reflection route and / or correcting the positioning of the tracking signals, and reconstructing the inspection personnel positioning information; identifying the inspection personnel identity information, the inspection task and the positioning signal path based on the reconstructed inspection personnel positioning information, and visually converting the inspection personnel positioning information in combination with the power plant BIM model.The technical problems of inaccurate positioning of inspection personnel, inability to track and manage in real time in the prior art are solved, the positioning accuracy is improved, and the inspection information is visually displayed in real time by introducing the BIM technology and the auxiliary positioning analysis model.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of positioning management, in particular to a BIM-based power plant inspection personnel positioning management method and system. BACKGROUND

[0002] With the rapid development of the power industry and the continuous expansion of power plant scale, power plant inspection tasks become more and more complex, and inspection personnel need to conduct regular inspection and maintenance work in a huge facility. The traditional inspection method relies on manual recording and positioning, which has problems such as inaccurate positioning, untimely information transmission, etc., resulting in low inspection efficiency, unreasonable task allocation, and difficulty in tracking and managing inspection tasks. This not only increases the operation risk of the power plant, but also may lead to missed or delayed detection of equipment failure, affecting the safety and production efficiency of the power plant. SUMMARY

[0003] The present application provides a BIM-based power plant inspection personnel positioning management method and system, which solves the technical problems of inaccurate positioning of inspection personnel, inability to track and manage in real time in the prior art.

[0004] In a first aspect, the present application provides a BIM-based power plant inspection personnel positioning management method, which comprises:

[0005] Connecting a personnel positioning system to collect inspection personnel positioning information and positioning tracking signals; identifying signal structure features and positioning space structure features based on a power plant BIM model to construct an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to the signal structure features and the positioning space structure features, and is obtained in accordance with a switching order; projecting the collected inspection personnel positioning information and positioning tracking signals into the auxiliary positioning analysis model, tracking the signal reflection route and / or correcting the positioning of the positioning tracking signals, and reconstructing the inspection personnel positioning information; identifying inspection personnel identity information, inspection tasks, and positioning signal paths based on the reconstructed inspection personnel positioning information, and converting the inspection personnel positioning information into visual data in combination with the power plant BIM model, the visual data including inspection personnel positioning information, inspection task tracking data, and path tracking data.

[0006] In a second aspect, the present application provides a BIM-based power plant inspection personnel positioning management system, which comprises:

[0007] The information collection module is used for connecting a personnel positioning system to collect positioning information and a positioning tracking signal of an inspection personnel; the model construction module is used for identifying signal structure features and positioning space structure features based on a power plant BIM model, and constructing an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to the signal structure features and the positioning space structure features, and is obtained in a switching sequence; the correction module is used for projecting the collected positioning information and the positioning tracking signal of the inspection personnel into the auxiliary positioning analysis model, tracking a signal reflection route and / or correcting positioning of the positioning tracking signal, and reconstructing the positioning information of the inspection personnel; and the visualization module is used for identifying inspection personnel identity information, an inspection task and a positioning signal path based on the reconstructed positioning information of the inspection personnel, and converting the positioning information of the inspection personnel into visual data in combination with the power plant BIM model, wherein the visual data includes the positioning information of the inspection personnel, the inspection task tracking data and the path tracking data.

[0008] The one or more technical solutions provided in the present application have at least the following technical effects or advantages:

[0009] Firstly, the information collection module is used for connecting a personnel positioning system to collect positioning information and a positioning tracking signal of an inspection personnel. Then, the model construction module is used for identifying signal structure features and positioning space structure features based on a power plant BIM model, and constructing an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to the signal structure features and the positioning space structure features, and is obtained in a switching sequence. Then, the correction module is used for projecting the collected positioning information and the positioning tracking signal of the inspection personnel into the auxiliary positioning analysis model, tracking a signal reflection route and / or correcting positioning of the positioning tracking signal, and reconstructing the positioning information of the inspection personnel. Finally, the visualization module is used for identifying inspection personnel identity information, an inspection task and a positioning signal path based on the reconstructed positioning information of the inspection personnel, and converting the positioning information of the inspection personnel into visual data in combination with the power plant BIM model, wherein the visual data includes the positioning information of the inspection personnel, the inspection task tracking data and the path tracking data. The technical problems of inaccurate positioning of the inspection personnel, and inability to track and manage in real time in the prior art are solved, and the technical effects of improving positioning accuracy and realizing real-time visualization of inspection information are achieved by introducing the BIM technology and the auxiliary positioning analysis model. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0011] Figure 1A BIM-based power plant inspection personnel positioning management method flowchart is provided for the embodiments of the present application.

[0012] Figure 2 A BIM-based power plant inspection personnel positioning management system structure diagram is provided for the embodiments of the present application.

[0013] Label explanation: information collection module 11, model construction module 12, correction module 13, visualization module 14. DETAILED DESCRIPTION

[0014] The present application provides a BIM-based power plant inspection personnel positioning management method and system, which solves the technical problems of inaccurate positioning of inspection personnel, inability to track and manage in real time in the prior art.

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0016] It should be noted that the terms "comprise" and "have" are intended to cover non-exclusive inclusion, for example, a process, method, system, product or server comprising a series of steps or units does not have to be limited to those clearly listed steps or units, but can include other steps or modules that are not clearly listed or inherent to the process, method, product or device.

[0017] Embodiment one, as shown in the present application, a BIM-based power plant inspection personnel positioning management method is provided, wherein the method comprises: Figure 1 Connecting a personnel positioning system to collect inspection personnel positioning information and positioning tracking signals.

[0018] The personnel positioning system includes a plurality of positioning devices, which can obtain the position and motion trajectory of the inspection personnel in real time, and the inspection personnel positioning information and positioning tracking signals can be obtained by connecting the personnel positioning system. The inspection personnel positioning information includes the real-time position coordinates (such as X, Y, Z coordinates) of the inspection personnel in space, and the positioning tracking signals include position data (such as the current position of the personnel), time stamp (recording the specific time when the position is collected) and other related signals for describing the personnel path and motion trajectory.

[0019] Further, the personnel positioning system collects inspection personnel positioning information and positioning tracking signals, including:

[0020]

[0021] ​Obtain the inspection personnel positioning information from the multi-source positioning device of the personnel positioning system; configure the positioning tracking signal according to the signal device source, identification time stamp and identification path of the inspection personnel positioning information.

[0022] Further, the multi-source positioning device includes a radio frequency positioning device, a UWB positioning device and an inertial measurement sensor device.

[0023] Obtain the inspection personnel positioning information from the multi-source positioning device of the personnel positioning system, wherein the multi-source positioning device includes a radio frequency positioning device, an ultra-wideband (UWB) positioning device and an inertial measurement sensor device, etc., which obtain the position coordinates and motion trajectory of the inspection personnel in the power plant in real time through different technical means. The radio frequency positioning device locates the inspection personnel through radio frequency signals, the UWB positioning device accurately measures the position through ultra-wideband signals, and the inertial measurement sensor obtains dynamic information such as acceleration and angular velocity of the inspection personnel through sensors such as accelerometers and gyroscopes, so as to calculate the position and attitude of the inspection personnel.

[0024] After obtaining the inspection personnel positioning information, the positioning tracking signal is also collected, which can help the system to continuously monitor the position change of the inspection personnel and ensure that the motion trajectory of the inspection personnel can be tracked in real time. The positioning tracking signal contains information such as the source, time stamp and identification path of the positioning signal; according to the source and time stamp of the signal device, the positioning signals generated by different devices can be classified, and the signals can be configured and processed in combination with the identification path information. Specifically, the identification time stamp of the signal marks the specific time of the positioning data collection, so as to identify the timeliness of the signal; and the identification path of the positioning signal records the action trajectory of the inspection personnel, so as to ensure that the positioning information can accurately reflect the real-time position of the inspection personnel. Through this configuration, the system can accurately track and reconstruct the motion trajectory of the inspection personnel, ensure the accuracy and reliability of the positioning data, and provide accurate data support for subsequent positioning correction, task tracking and visual display.

[0025] Identify the signal structure features and positioning space structure features based on the BIM model of the power plant, and construct an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to the signal structure features and the positioning space structure features, and is obtained in sequence according to the switching order.

[0026] The BIM model provides detailed information of each building, facility, pipeline and structure in the power plant. Through the BIM model of the power plant, the three-dimensional building structure, spatial layout and equipment distribution of the power plant can be obtained, so as to identify the signal structure features and positioning space structure features that affect the positioning signal.

[0027] Specifically, signal structure feature recognition refers to identifying parts that may interfere with signal propagation by analyzing the geometry of buildings or other facilities in the power plant BIM model. These interferences may come from walls, columns, floors, and other obstacles that can affect the transmission path of the signal, thereby reducing the accuracy of the positioning system. By traversing the power plant BIM model, matching the structure of the building with the propagation characteristics of the positioning signal, determining which building structures cause signal attenuation or reflection, and extracting signal structure features, these signal structure features provide important data support for the reflection, attenuation, and interference of the positioning signal.

[0028] In addition, positioning space structure feature recognition focuses on walkable areas within the power plant, such as elevators, staircases, corridors, and other areas that directly affect the activity path of the inspection personnel, and are therefore crucial to the operation of the positioning system. By extracting passable structure information such as elevators and staircases in the BIM model, identifying the spatial structure features available for positioning in the power plant, these spatial structure features help determine the location and movement path of the inspection personnel, as well as switching between different floors and limiting the activity area.

[0029] After identifying the signal structure features and positioning space structure features, these features are labeled and extracted to construct an auxiliary positioning analysis model, which is composed of multiple floor auxiliary positioning analysis sub-models. Each floor's auxiliary positioning analysis sub-model is designed based on the specific signal propagation characteristics and spatial layout of that floor. The construction of the auxiliary positioning analysis model not only improves the adaptability of the positioning system to the power plant environment, but also allows for positioning correction based on spatial structure features in the case of signal attenuation or obstruction, ensuring that the positioning information of the inspection personnel is more accurate and reliable.

[0030] Further, based on the power plant BIM model, signal structure feature and positioning space structure feature recognition, and the construction of an auxiliary positioning analysis model, include:

[0031] Analyzing the obstacle building structure features that have a signal impact on the multi-source positioning device, traversing and matching the obstacle building structure features in the power plant BIM model to obtain the signal structure features, which are structures in the power plant BIM model that interfere with the signal of the positioning device; taking elevator / stair structure and walkable area structure as positioning space structure features, traversing and matching them in the power plant BIM model to extract the positioning space structure features of the power plant; labeling and extracting the signal structure features and positioning space structure features to construct the auxiliary positioning analysis model.

[0032] The power plant BIM model contains detailed three-dimensional structural information of all buildings in the power plant. According to this information, building structures that may interfere with positioning signals, such as walls, columns, floors, etc. can be identified. These obstacle building structures will affect the propagation path of the positioning signal, which may cause signal attenuation, reflection or shielding, and thus affect the positioning accuracy. By traversing the power plant BIM model, combined with the propagation characteristics of the positioning signal, the specific building structures that interfere with the signal are found. These identified obstacle building structure features are marked as signal structure features, which are used for subsequent signal correction and optimization. Secondly, elevators, stairs and other walkable area structures are extracted as positioning space structure features. By traversing the power plant BIM model, the spatial layout of elevators, stairs and other walkable areas is identified, and the positioning space structure features of the power plant are extracted. These space structure features help to determine the movement trajectory and spatial positioning of the inspection personnel between different floors. Finally, the identified signal structure features and positioning space structure features are marked and extracted, and they are integrated into a comprehensive auxiliary positioning analysis model. This model combines the signal interference features and spatial structure layout of the buildings in the power plant, and can accurately analyze and optimize the propagation of the positioning signal.

[0033] Further, the signal structure features and positioning space structure features are marked and extracted, and the auxiliary positioning analysis model is constructed, including:

[0034] According to the correspondence relationship between the floors and the signal structure features and the positioning space structure features, auxiliary positioning analysis sub-models for each floor are constructed. Based on the elevator / stair structure, floor switching features are configured to establish a switching mechanism for the auxiliary positioning analysis sub-models for each floor. The auxiliary positioning analysis sub-models for each floor are connected in the switching order to construct the auxiliary positioning analysis model.

[0035] Firstly, according to the corresponding relationship between floor and signal structure characteristics, positioning space structure characteristics, an independent auxiliary positioning analysis sub-model is constructed for each floor. In the BIM model of the power plant, the structure and space characteristics between floors may be different, and factors such as signal attenuation and reflection may also be different due to the difference between floors. Therefore, a special auxiliary positioning analysis sub-model needs to be constructed according to the architectural structure characteristics of each floor and the corresponding positioning space characteristics. Each sub-model can fully consider the signal propagation environment and space layout in the floor, so as to accurately reflect the positioning information of the floor. Next, based on the elevator and staircase structure, the floor switching features are configured, and the switching mechanism between the auxiliary positioning analysis sub-models of each floor is established. Finally, the auxiliary positioning analysis sub-models of each floor are connected in sequence through the floor sequence to construct a complete auxiliary positioning analysis model. When switching floors, the system will switch to the corresponding floor sub-model according to the signal structure characteristics and space layout of the target floor, and perform signal correction and position update. Through the floor switching mechanism, the system can ensure that the positioning information of the inspection personnel is seamlessly connected when moving between floors.

[0036] Based on the elevator and staircase structure, the floor switching features are configured, and the switching mechanism between the auxiliary positioning analysis sub-models of each floor is established. Specifically, the detailed position and geometric features of vertical transportation structures such as elevators and staircases are extracted from the BIM model of the power plant. These information includes the three-dimensional coordinates of elevators and staircases, the floor they are located in, and the connection relationship. Whenever the positioning data of the inspection personnel changes, the system will detect whether it is close to the elevator or staircase, and determine whether the inspection personnel is preparing to switch floors. Based on the extracted elevator and staircase space structure, the system configures the elevator and staircase as the floor switching path. When configuring the floor switching features, the switching rules need to be defined according to the space structure of the elevator and staircase path. For example, the signal may be severely attenuated or lost in the elevator, while the positioning signal may be temporarily disturbed due to space limitations in the staircase area. According to these characteristics, special signal processing and switching algorithms are configured for elevators and staircases to ensure accurate transmission of positioning information when the inspection personnel switches from one floor to another.

[0037] Next, the system will construct auxiliary positioning analysis sub-models for each floor according to the corresponding relationship between the floor and the elevator and staircase. Each auxiliary positioning analysis sub-model of a floor is independently designed according to the architectural structure, signal propagation characteristics and space layout of the floor. When the inspection personnel moves within the same floor, the system will perform positioning calculation according to the auxiliary positioning analysis sub-model of the floor. For floor switching, the system will automatically identify the action of the inspection personnel entering the new floor according to the switching features of the elevator or staircase, and switch the auxiliary positioning analysis sub-model of the current floor to the sub-model of the target floor.

[0038] When switching floors, the system ensures the accuracy of the switching in the following way: when the inspector passes through the elevator or stairs, the positioning system first monitors the signal changes. The system compares the signal fluctuations with the characteristics of the elevator or stair path to determine whether the inspector is switching between floors. Once confirmed, the system automatically updates the inspector's floor information according to the floor switching characteristics and switches to the corresponding auxiliary positioning analysis sub-model of the floor. At this time, the system re-corrects the signal according to the signal environment and spatial characteristics of the target floor to ensure the continuity and accuracy of the positioning data.

[0039] Further, the auxiliary positioning analysis model is constructed, including:

[0040] According to the signal structure characteristics, the influence relationship of each positioning signal is fitted, and the signal attenuation matrix of each signal source is constructed; based on the signal attenuation matrix of each signal source, the positioning signal reflection correction is performed, and a transmission signal correction module is constructed; according to the positioning space structure characteristics, the floor checking and feasibility correction of the positioning area are performed, and a position area correction module is constructed; the transmission signal correction module and the position area correction module are connected in parallel, and the auxiliary positioning analysis model is constructed.

[0041] First, according to the signal structure characteristics, the influence relationship of different building structures on the positioning signal is fitted, and the signal attenuation matrix of each signal source is constructed. Specifically, the building structure (such as wall, column, floor, etc.) of the power plant will have the effect of attenuation, reflection or shielding on different types of signals (such as radio frequency, UWB signal). According to the building structure characteristics in the BIM model of the power plant, the system uses historical sample data and signal test data to analyze the specific influence of each building structure on the signal. For example, the wall may have a strong attenuation effect on the radio frequency signal, and the metal structure may cause strong reflection to the UWB signal. Based on these influence relationships, the system constructs a signal attenuation matrix, and each matrix element represents the attenuation influence degree of the building structure on the signal in the signal source to receiving point path. The signal attenuation matrix provides a quantitative reference for subsequent signal correction.

[0042] Next, based on the signal attenuation matrix of each signal source, the positioning signal is corrected for reflection. Specifically, ray tracing simulation is generated using the geometric data of the BIM model, which can accurately simulate the propagation, reflection, refraction and attenuation of signals. Through simulation, the system can predict the reflection path and propagation path of the signal, determine the time difference (TDoA) change when the signal reaches the receiving point. TDoA (Time Difference of Arrival) is a commonly used measurement method in positioning systems, which calculates positioning information by measuring the time difference of signal arrival from different signal sources to the receiver. However, the signal may produce errors due to reflection or multipath propagation, resulting in TDoA measurement deviation. In order to correct these deviations, the system predicts the reflection path of the signal through ray tracing simulation, and corrects the TDoA measurement value of UWB and Bluetooth signals according to the expected signal propagation model. Specifically, the system calculates the ideal propagation time of the signal from the source to the receiving point, and compares it with the actual measured time difference, thereby adjusting the positioning data and eliminating errors caused by reflection and attenuation. Based on this, a transmitted signal correction module is constructed, which combines the signal attenuation matrix and the ray tracing simulation results to correct the positioning signal of each signal source in real time.

[0043] In addition, the system also needs to check the floor and correct the feasibility of the positioning area according to the structural characteristics of the positioning space, and construct a position area correction module. In the power plant environment, the activity range of the inspection personnel is usually limited by the spatial layout of the building, especially the walkable areas such as corridors and platforms. The system uses the walkable area data in the BIM model to identify the legal activity range of the inspection personnel. When the positioning point appears in the wall or inside the equipment, the system will automatically correct the positioning point to the nearest legal coordinate to avoid the positioning point crossing the impassable area. In addition, since the Z-axis coordinate may have a sudden change when the inspection personnel goes up and down the floor, the system checks the change of the Z-axis coordinate by analyzing the spatial position of the stairs and elevators in the BIM model, to ensure the accuracy of the floor switching. If the system detects that the Z-axis coordinate mutation does not conform to the path of the elevator or stairs, it will trigger the correction mechanism to correct the unreasonable positioning change. Based on this, a position area correction module is constructed, and the system can correct the positioning information of the inspection personnel in real time, ensure that its position is always within the legal area, and accurately reflect the actual position when switching floors, avoiding positioning errors caused by spatial limitations or abnormal motion trajectories.

[0044] Finally, the system connects the signal emission correction module with the position area correction module in parallel to build a complete auxiliary positioning analysis model. This comprehensive model combines signal propagation characteristics and spatial structure characteristics, can adjust the positioning signal according to the influence of buildings, and correct the positioning result according to the actual spatial layout, thereby providing more accurate and stable positioning information. Through the cooperative work of the two modules, the auxiliary positioning analysis model can not only solve the signal problem caused by building interference, but also ensure the consistency and reliability of the positioning system in different floors and space areas.

[0045] Further, according to the signal structure characteristics, the influence relationship of each positioning signal is fitted, and the signal attenuation matrix of each signal source is constructed, including:

[0046] The signal influence relationship of different structure characteristics on each positioning signal is fitted by using historical sample data; the indoor space coordinates are gridded, and the signal attenuation influence data in the grid is determined according to the signal structure characteristics and signal influence relationship in different indoor spaces, the signal attenuation influence data is the signal change from entering the grid to leaving the grid in the path direction from the signal source to the receiving point; based on each grid position of the indoor space coordinates as the matrix row, the signal attenuation influence data as the matrix column element, the signal attenuation matrix of each signal source is constructed.

[0047] By analyzing historical sample data, the influence of different building structure characteristics on various positioning signals is fitted. Building structure characteristics include walls, columns, equipment, etc. in the power plant, which have important effects on the propagation path of signals in the process of signal propagation. By collecting and analyzing historical positioning data and environmental test data, the system can calculate the specific influence of different structure characteristics on various positioning signals (such as radio frequency signals, UWB signals, etc.). For example, some materials (such as concrete, metal) can significantly attenuate radio frequency signals, while other materials (such as glass, wood) have less impact on UWB signals. Through these data, the system can establish the attenuation relationship between each building structure and each positioning signal, providing a basis for subsequent signal attenuation matrix construction. Next, the indoor space coordinates of the power plant are gridded, and the space of the power plant is divided into multiple small grids, each grid representing an area in the power plant. For each grid, according to the building structure characteristics and signal propagation characteristics in the area, the signal attenuation influence data in the grid is calculated, which represents the change in the signal path from the signal source to the receiving point, i.e. how the signal is affected by the building structure (such as walls, equipment, etc.) in the area after entering the grid area. The system will simulate the propagation path of the signal according to the detailed spatial data in the BIM model of the power plant and the position of the signal source, and evaluate the attenuation and change of the signal in each grid. For example, if the signal passes through a thick wall, the system will record the degree of signal attenuation in the grid. Finally, the system constructs a complete signal attenuation matrix based on the grid position of the indoor space coordinates as the matrix row in the signal attenuation matrix, and the signal attenuation influence data in the grid as the matrix column element. Each matrix row represents a grid position, and each matrix column represents the attenuation influence from the grid to each signal source.

[0048] Further, the signal attenuation matrix of each signal source is used to correct the positioning signal reflection, including:

[0049] According to the signal attenuation matrix of each signal source, the signal of each grid is evaluated to obtain the attenuation data of each signal source; the credible weight of each signal source is configured according to the attenuation data of each signal source; the positioning signal in each grid is corrected using the signal attenuation matrix of each signal source, and the positioning fusion is performed according to the credible weight of each signal source to determine the corrected positioning signal data.

[0050] The process of correcting the positioning signal reflection based on the signal attenuation matrix of each signal source first needs to evaluate the signal of each grid according to the signal attenuation matrix. By analyzing the signal attenuation influence data in each grid, the system can obtain the attenuation data of each signal source, which reflects the attenuation and change of the signal in each grid area from the signal source to the receiving point. By evaluating the signal of each grid in detail, the system can identify which areas have larger signal attenuation and which areas have smaller signal attenuation, thereby providing data support for subsequent signal correction. Next, the system will configure the trusted weight of each signal source according to the attenuation data of each signal source. Specifically, the smaller the attenuation data, the less interference or attenuation the signal propagation receives, and the system will give the signal source a higher trusted weight; on the contrary, the signal source with larger attenuation data will be given a lower trusted weight because the signal propagation receives more interference or attenuation. The trusted weight of the signal source reflects the reliability of its positioning information, so the system will perform weighted processing on the signal according to this weight to ensure that more reliable signal sources are given more weight when fusing data from different signal sources.

[0051] After obtaining the signal attenuation matrix and the trusted weight of each signal source, the system uses this information to correct the positioning signal in each grid. Specifically, the system combines the attenuation data in the signal attenuation matrix with the trusted weight of the signal source to adjust the actual value of the positioning signal. According to the attenuation and trusted weight of different signal sources, the system can accurately correct the positioning signal, eliminate the interference of building structures on the signal propagation path, and ensure the accuracy and stability of the positioning information. Finally, the system will fuse the corrected positioning signal data according to the correction data of each signal source.

[0052] Further, the positioning signal correction includes signal strength correction, signal propagation time correction, and signal arrival angle correction.

[0053] The correction of the positioning signal includes multiple aspects: first, signal strength correction, which adjusts the strength of the signal according to the attenuation matrix of the signal source and environmental factors such as walls, equipment, etc.; second, signal propagation time correction, which corrects the propagation time of the positioning signal by calculating the time delay caused by attenuation and reflection during signal propagation; and finally, signal arrival angle correction, which corrects the angle information of the signal arriving at the receiving point according to the interference and reflection effects in the signal propagation path. These corrections ensure that the positioning system can accurately reflect the actual signal propagation process, thereby improving the accuracy and reliability of positioning.

[0054] The collected positioning information of the inspection personnel and the positioning tracking signal are projected into the auxiliary positioning analysis model, the signal reflection route tracking and / or positioning correction of the positioning tracking signal is performed, and the positioning information of the inspection personnel is reconstructed.

[0055] By projecting the collected patrol personnel positioning information and positioning tracking signals into the auxiliary positioning analysis model, the signal reflection route tracking is first performed; the auxiliary positioning analysis model analyzes the propagation path of the signal from the signal source to the receiving point through ray tracing, and identifies the signal reflection and multipath propagation; by tracking the reflection route of the signal, the system can understand the actual path of signal propagation, so as to correct the error caused by signal attenuation or reflection. In addition, the positioning signal will also be corrected, mainly including signal strength correction, propagation time correction and arrival angle correction; by adjusting these parameters, the system can reduce the positioning deviation caused by environmental factors, and ensure that the positioning result is more accurate. The corrected positioning signal will be used to reconstruct the positioning information of the patrol personnel, and this reconstruction process combines the corrected signal data, signal path and reflection information to calculate the actual position of the patrol personnel and correct any positioning error caused by signal interference.

[0056] Further, reconstructing the positioning information of the patrol personnel further includes:

[0057] Searching for the structural features of the power plant BIM model with the patrol personnel positioning information, extracting the pipeline transparency according to the patrol personnel identity information and the patrol task; identifying the maintenance path according to the pipeline transparent image of the power plant BIM model, generating the maintenance guidance path, and feeding back the maintenance guidance path according to the patrol personnel identity information.

[0058] In the process of reconstructing the positioning information of the patrol personnel, in addition to the correction and reconstruction of the positioning signal, the system will also extract the pipeline transparency according to the positioning information of the patrol personnel and the related task, and generate the maintenance guidance path.

[0059] First, the system uses the reconstructed inspection personnel positioning information to search in the power plant BIM model and extracts the building structure features related to the current location of the inspection personnel, including important facilities such as pipes, equipment, floors, etc. in the power plant. When extracting this information, the system will combine the inspection personnel's identity information and current inspection task to perform pipe transparency processing, i.e. the system dynamically generates a three-dimensional visual image of the power plant pipe related to the task according to the actual task needs of the inspection personnel. After pipe transparency extraction, the system will analyze the pipe transparent image based on the power plant BIM model to identify the pipe paths that need to be repaired and mark these paths in the model. According to the task requirements of the inspection personnel, the system will generate repair guidance paths suitable for the inspection personnel to perform repair work through computer vision, path planning algorithms, etc. These paths will take into account factors such as the spatial layout of the power plant, obstacles, equipment installation location, etc. to ensure that the inspection personnel can quickly reach the repair target according to the optimal path and reduce time waste. Finally, the system will provide feedback on the repair guidance path based on the inspection personnel's identity information (such as position, permissions, etc.). If the inspection personnel needs to repair some special equipment, the system will provide personalized guidance paths and repair information based on the inspection personnel's identity and task requirements. In this way, the inspection personnel can not only rely on clear pipe images to understand task requirements, but also quickly and accurately complete repair work according to the system's path planning, avoiding task omissions and errors.

[0060] Based on the reconstructed inspection personnel positioning information, the system identifies the inspection personnel's identity information, inspection task, and positioning signal path, and combines the power plant BIM model to convert the inspection personnel positioning information into visual data, including inspection personnel positioning information, inspection task tracking data, and path tracking data.

[0061] Based on the reconstructed inspection personnel positioning information, the system first identifies the inspection personnel's identity information, inspection task, and positioning signal path. In this process, the system combines the power plant BIM model to convert these information into visual data, making it easy for management personnel to monitor the activities and task progress of the inspection personnel in real time.

[0062] Firstly, the system automatically identifies the identity information of the inspection personnel, including their post, authority, task allocation, and other relevant information, based on the reconstructed positioning information. These identity information are closely related to the inspection task, and the system determines the required work area and inspection content of the inspection personnel according to their current task (such as checking equipment, repairing pipelines, conducting safety inspections, etc.). At the same time, the system also identifies and calibrates the real-time position of the inspection personnel, which is marked in the BIM model, ensuring that the management personnel can accurately see the current position of the inspection personnel. Then, the system analyzes and processes the positioning signal path of the inspection personnel, which reflects the movement trajectory of the inspection personnel inside the power plant. By combining the reflection correction of the positioning signal and the signal path tracking data, the system can accurately restore the actual travel route of the inspection personnel. The combination of the three-dimensional spatial layout and facility structure information in the BIM model and the movement trajectory of the inspection personnel enables the system to visualize the path of the inspection personnel in the three-dimensional model, presenting their actual work route in the power plant. Finally, the system combines the positioning information of the inspection personnel, the inspection task tracking data, and the path tracking data to generate a visual interface. This interface includes the real-time position, task status, and movement trajectory of the inspection personnel, which can be dynamically updated and displayed in real-time in the BIM model of the power plant, helping the management personnel quickly grasp the work status and progress of the inspection personnel. Through this visual conversion, the management personnel can more intuitively understand the activities, task completion, and possible problems of the inspection personnel, improving the transparency and efficiency of the inspection work.

[0063] In summary, the embodiments of the present application have at least the following technical effects:

[0064] Firstly, the connection personnel positioning system collects the positioning information and positioning tracking signals of the inspection personnel. Then, based on the BIM model of the power plant, the signal structure characteristics and positioning space structure characteristics are identified, and an auxiliary positioning analysis model is constructed. The auxiliary positioning analysis model is a sub-model for each floor constructed according to the signal structure characteristics and positioning space structure characteristics, connected in sequence. Then, the collected positioning information and positioning tracking signals of the inspection personnel are projected into the auxiliary positioning analysis model, and the signal reflection route tracking and / or positioning correction of the positioning tracking signals are performed to reconstruct the positioning information of the inspection personnel. Finally, based on the reconstructed positioning information of the inspection personnel, the identity information, inspection task, and positioning signal path of the inspection personnel are identified, and the positioning information of the inspection personnel is visualized based on the BIM model of the power plant. The visualized data includes the positioning information, inspection task tracking data, and path tracking data of the inspection personnel. This solves the technical problems of inaccurate positioning of the inspection personnel, inability to track and manage in real time in the prior art. By introducing BIM technology and an auxiliary positioning analysis model, the technical effects of improving positioning accuracy and realizing real-time visualization of inspection information are achieved.

[0065] Embodiment two, based on the same inventive concept as the BIM-based power plant inspection personnel positioning management method in the preceding embodiment, as Figure 2 The present application provides a BIM-based power plant inspection personnel positioning management system, wherein the system comprises:

[0066] An information collection module 11 is configured to connect a personnel positioning system to collect inspection personnel positioning information and positioning tracking signals; a model construction module 12 is configured to identify signal structure features and positioning space structure features based on a power plant BIM model, and construct an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to signal structure features and positioning space structure features, and is obtained by connection in switching order; a correction module 13 is configured to project the collected inspection personnel positioning information and positioning tracking signals into the auxiliary positioning analysis model, track the signal reflection route and / or correct the positioning of the positioning tracking signals, and reconstruct the inspection personnel positioning information; a visualization module 14 is configured to identify inspection personnel identity information, inspection tasks, and positioning signal paths based on the reconstructed inspection personnel positioning information, and convert the inspection personnel positioning information into visual data by combining the power plant BIM model, wherein the visual data comprises inspection personnel positioning information, inspection task tracking data, and path tracking data.

[0067] Further, the information collection module 11 is configured to perform the following method:

[0068] Obtain inspection personnel positioning information from a multi-source positioning device of the personnel positioning system; configure the positioning tracking signals according to the signal device source of the inspection personnel positioning information, the identification time stamp of the positioning signal, and the identification path.

[0069] Further, the information collection module 11 is configured to perform the following method:

[0070] The multi-source positioning device comprises a radio frequency positioning device, a UWB positioning device, and an inertial measurement sensor device.

[0071] Further, the model construction module 12 is configured to perform the following method:

[0072] Analyze obstacle building structure features that have a signal impact on the multi-source positioning device, traverse and match the obstacle building structure features in the power plant BIM model to obtain signal structure features, wherein the signal structure features are structures in the power plant BIM model that have a signal interference impact on the positioning device; traverse and match elevator / stair structure and walkable area structure as positioning space structure features in the power plant BIM model to extract the positioning space structure features of the power plant; and label and extract the signal structure features and the positioning space structure features to construct the auxiliary positioning analysis model.

[0073] Further, the model construction module 12 is configured to perform the following method:

[0074] According to the correspondence between the floor and the signal structure characteristics, the positioning space structure characteristics, the auxiliary positioning analysis sub-model of each floor is constructed; based on the elevator / stair structure, the floor switching characteristics are configured, the switching mechanism of the auxiliary positioning analysis sub-model of each floor is established, the auxiliary positioning analysis sub-models of each floor are connected according to the switching order, and the auxiliary positioning analysis model is constructed.

[0075] Further, the model construction module 12 is configured to perform the following method:

[0076] According to the influence relationship of each positioning signal according to the signal structure characteristics, the signal attenuation matrix of each signal source is constructed; based on the signal attenuation matrix of each signal source, the positioning signal reflection correction is constructed, the transmitting signal correction module is constructed; according to the positioning area according to the positioning space structure characteristics, the floor checking and the feasibility correction are constructed, the position area correction module is constructed; the transmitting signal correction module and the position area correction module are connected in parallel, and the auxiliary positioning analysis model is constructed.

[0077] Further, the model construction module 12 is configured to perform the following method:

[0078] The signal influence relationship of different structure characteristics on each positioning signal is fitted by using historical sample data; the indoor space coordinates are gridded, the signal attenuation influence data in the grid is determined according to the signal structure characteristics and the signal influence relationship in different indoor spaces, the signal attenuation influence data is the signal change from the signal source to the receiving point path direction from entering the grid to the grid; based on each grid position of the indoor space coordinates as a matrix row, the signal attenuation influence data as a matrix column element, the signal attenuation matrix of each signal source is constructed.

[0079] Further, the model construction module 12 is configured to perform the following method:

[0080] According to the signal attenuation matrix of each signal source, the signal evaluation of each grid is performed, and the attenuation data of each signal source is obtained; according to the attenuation data of each signal source, the credible weight of each signal source is configured; the positioning signal in each grid is corrected by using the signal attenuation matrix of each signal source, and the positioning fusion is performed according to the credible weight of each signal source, and the corrected positioning signal data is determined.

[0081] Further, the model construction module 12 is configured to perform the following method:

[0082] The positioning signal correction includes: signal strength correction, signal propagation time correction, signal arrival angle correction.

[0083] Further, the correction module 13 is configured to execute the following method:

[0084] searching for structural features of the power plant BIM model with the inspection personnel positioning information, extracting pipeline transparency according to the inspection personnel identity information and the inspection task; identifying the maintenance path of the pipeline transparent image according to the power plant BIM model, generating a maintenance guidance path, and feeding back the maintenance guidance path according to the inspection personnel identity information.

[0085] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The above describes a specific embodiment of the present application. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are also possible or can be advantageous.

[0086] The above is only the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0087] The specification and drawings are merely exemplary of the present application, and should be considered to cover any and all modifications, variations, combinations or equivalents that fall within the scope of the present application. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the present application and its equivalent technology, the present application is intended to include these modifications and variations.

Claims

1. A BIM-based power plant patrol personnel positioning management method, characterized in that, The method comprises: The personnel positioning system collects the inspection personnel positioning information and the positioning tracking signal; Based on the power plant BIM model, the signal structure characteristics and the positioning space structure characteristics are identified, and an auxiliary positioning analysis model is constructed, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis submodel constructed according to the signal structure characteristics and the positioning space structure characteristics, and is connected according to the switching order; The collected inspection personnel positioning information and positioning tracking signal are projected into the auxiliary positioning analysis model, the positioning tracking signal is tracked and / or corrected, and the inspection personnel positioning information is reconstructed; Based on the reconstructed inspection personnel positioning information, the inspection personnel identity information, the inspection task and the positioning signal path are identified, and the inspection personnel positioning information is visually converted combined with the power plant BIM model, and the visual data includes the inspection personnel positioning information, the inspection task tracking data and the path tracking data; Wherein, the personnel positioning system collects the inspection personnel positioning information and the positioning tracking signal, comprising: Obtain the inspection personnel positioning information from the multi-source positioning device of the personnel positioning system; According to the signal device source of the inspection personnel positioning information, the identification time stamp and the identification path of the positioning signal, the positioning tracking signal is configured; Wherein, the signal structure characteristics and the positioning space structure characteristics are identified based on the power plant BIM model, and the auxiliary positioning analysis model is constructed, comprising: Analyze the obstacle building structure characteristics that have signal influence on the multi-source positioning device, traverse and match the obstacle building structure characteristics in the power plant BIM model, obtain the signal structure characteristics, and the signal structure characteristics are the structures in the power plant BIM model that interfere with the positioning device; The elevator / stair structure and the walkable area structure are taken as the positioning space structure characteristics, and are traversed and matched in the power plant BIM model to extract the positioning space structure characteristics of the positioning power plant; The signal structure characteristics and the positioning space structure characteristics are marked and extracted to construct the auxiliary positioning analysis model.

2. The BIM-based power plant inspection personnel positioning management method of claim 1, characterized in that, The multi-source positioning device comprises: a radio frequency positioning device, a UWB positioning device and an inertial measurement sensor device. 3.The BIM-based power plant inspector positioning management method of claim 1, wherein, The auxiliary positioning analysis model is each floor auxiliary positioning analysis submodel constructed according to the signal structure characteristics and the positioning space structure characteristics, and is connected according to the switching order, comprising: According to the corresponding relationship between the floor and the signal structure characteristics and the positioning space structure characteristics, each floor auxiliary positioning analysis submodel is constructed; Based on the elevator / stair structure, the floor switching characteristics are configured, the switching mechanism of each floor auxiliary positioning analysis submodel is established, each floor auxiliary positioning analysis submodel is connected according to the switching order, and the auxiliary positioning analysis model is constructed.

4. The BIM-based power plant patrol worker positioning management method according to claim 1 or 3, characterized by, The auxiliary positioning analysis model is constructed, comprising: According to the signal structure characteristics, the influence relationship of each positioning signal is fitted, and the signal attenuation matrix of each signal source is constructed; Based on the signal attenuation matrix of each signal source, the positioning signal reflection correction is constructed, and the transmission signal correction module is constructed. According to the positioning space structure feature, floor checking and feasibility correction of the positioning area are performed, and a position area correction module is constructed; The transmission signal correction module and the position area correction module are connected in parallel to construct the auxiliary positioning analysis model.

5. The BIM-based power plant patrol worker positioning management method of claim 4, characterized by, According to the signal structure feature fitting influence relationship of each positioning signal, a signal attenuation matrix of each signal source is constructed, including: Using historical sample data to fit the signal influence relationship of different structure features on each positioning signal; The indoor space coordinates are gridded, and the signal attenuation influence data in the grid are determined according to the signal structure feature and the signal influence relationship in different indoor spaces. The signal attenuation influence data is the signal change from entering the grid to leaving the grid in the path direction from the signal source to the receiving point; Based on each grid position of the indoor space coordinates as a matrix row and the signal attenuation influence data as a matrix column, the signal attenuation matrix of each signal source is constructed.

6. The BIM-based power plant patrol worker positioning management method of claim 5, characterized by, Based on the signal attenuation matrix of each signal source, the positioning signal reflection correction includes: According to the signal attenuation matrix of each signal source, signal evaluation is performed on each grid to obtain the attenuation data of each signal source; According to the attenuation data of each signal source, the credible weight of each signal source is configured; Using the signal attenuation matrix of each signal source, the positioning signal in each grid is corrected, and the corrected positioning signal data is determined by positioning fusion according to the credible weight of each signal source.

7. The BIM-based power plant patrol worker positioning management method of claim 6, characterized by, The positioning signal correction includes signal strength correction, signal propagation time correction, and signal angle of arrival correction. 8.The BIM-based power plant inspector positioning management method of claim 1, wherein, The positioning information of the inspection personnel is reconstructed, and then the following steps are included: The structure features of the power plant BIM model are searched for the positioning information of the inspection personnel, and the pipeline transparency is extracted according to the identity information and the inspection task of the inspection personnel; According to the power plant BIM model, the maintenance path of the pipeline transparent image is identified to generate a maintenance guidance path, and the maintenance guidance path is fed back according to the identity information of the inspection personnel.

9. A BIM-based power plant patrol staff positioning management system, characterized by, The system for implementing the BIM-based power plant inspection personnel positioning management method of any one of claims 1-8, the system comprising: An information collection module for connecting a personnel positioning system to collect positioning information and positioning tracking signals of the inspection personnel; A model construction module for identifying signal structure features and positioning space structure features based on a power plant BIM model, and constructing an auxiliary positioning analysis model, wherein the auxiliary positioning analysis model is each floor auxiliary positioning analysis sub-model constructed according to the signal structure features and the positioning space structure features, and is obtained according to the switching order; A correction module for projecting the collected positioning information and positioning tracking signals of the inspection personnel into the auxiliary positioning analysis model to track the signal reflection route and / or correct the positioning of the positioning tracking signals, and reconstruct the positioning information of the inspection personnel; A visualization module for identifying the identity information, the inspection task, and the positioning signal path of the inspection personnel based on the reconstructed positioning information of the inspection personnel, and converting the positioning information of the inspection personnel into visual data by combining the power plant BIM model, wherein the visual data includes the positioning information of the inspection personnel, the tracking data of the inspection task, and the path tracking data.

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