Building geological data management and decision-making system based on virtual reality

Abstract

The invention relates to the technical field of building geological data management and decision-making, and discloses a building geological data management and decision-making system based on virtual reality, comprising: establishing a two-dimensional coordinate system on the ground with the position of a tower body of a tower crane on the ground as the origin; executing a dynamic calculation strategy for a dangerous area, and calculating the range of the dangerous area in real time; executing a construction personnel position prediction strategy, and predicting the position of each construction personnel at a future moment; executing a construction personnel danger judgment strategy according to the predicted position of each construction personnel at a future moment, and if it is predicted that a construction personnel will enter the dangerous area at a moment, executing a personnel movement direction planning strategy, and planning a new movement direction for the construction personnel entering the dangerous area; executing a cargo movement path planning strategy, and planning the position of the cargo at a moment, and optimizing the decision-making process of tower crane cargo transportation, thereby improving the safety of the construction site and the work efficiency.

Description

Technical Field

[0001] The invention relates to the field of building geological data management and decision-making technology, and in particular to a building geological data management and decision-making system based on virtual reality. Background Art

[0002] With the continuous development of construction technology, tower cranes are common equipment on construction sites, and their safe operation and efficient operation have become particularly important. In the process of transporting goods, tower cranes are affected by many factors such as wind, cargo swing, and construction personnel activities, which makes dynamic monitoring and adjustment of dangerous areas the key to ensuring construction safety.

[0003] Traditional safety management methods mostly rely on manual inspections and statically set safety ranges. They lack real-time dynamic monitoring and timely early warning mechanisms and are unable to effectively respond to complex construction environments and sudden changes.

[0004] In order to improve the safety and efficiency of the construction site, this solution is based on a construction geological data management and decision-making system based on virtual reality (VR) technology. The system monitors tower cranes, wind power, cargo location and construction personnel dynamics in real time, combines virtual reality technology for three-dimensional visualization management, realizes dynamic calculation and path planning of dangerous areas, enhances the safety protection of construction personnel, and optimizes the decision-making process of tower crane cargo transportation, thereby improving the safety and work efficiency of the construction site. Summary of the invention

[0005] The present invention provides a building geological data management and decision-making system based on virtual reality, which is used to promote the solution of the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a building geological data management and decision-making system based on virtual reality, comprising:

[0007] A two-dimensional coordinate system is established on the ground with the position of the tower crane on the ground as the origin;

[0008] Record the position of the cargo transported by the tower crane in real time, and record the position of the cargo at any time t as ,in, is a two-dimensional vector that describes the position of the goods in the two-dimensional coordinate system. Specifically, It represents the horizontal coordinate of the goods in the two-dimensional coordinate system at time t. It represents the vertical coordinate of the goods in the two-dimensional coordinate system at time t. Used to specify variables related to goods;

[0009] Measure the wind speed and direction of the cargo in real time, and record the wind speed at any time t as , the wind direction at any time t relative to the direction of cargo movement is recorded as ,in, Used to indicate variables related to wind;

[0010] Set up dangerous areas where construction workers are prohibited from entering during cargo movement;

[0011] Execute the dynamic calculation strategy of dangerous areas and calculate the scope of dangerous areas in real time;

[0012] Obtain the length of the tower crane boom, recorded as the first length;

[0013] Set the second length;

[0014] Calculate the first length + the second length, and record the result as the third length;

[0015] Make a circle with the origin as the center and the third length as the radius, which is recorded as the monitoring range;

[0016] The position of each construction worker in the monitoring range is recorded in real time, and the position of construction worker i at any time t is recorded as ;

[0017] Execute the construction worker location prediction strategy to predict the location of each construction worker at the next moment location;

[0018] According to the prediction of each construction worker at the next moment location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area;

[0019] If the prediction is at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area;

[0020] If the prediction is at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. location and at the time Move the goods to the planned location.

[0021] Optionally, executing a dynamic calculation strategy for a dangerous area to calculate the range of the dangerous area in real time includes:

[0022] The shape of the dangerous area is circular;

[0023] The radius of the danger zone at any time t is recorded as ,in, Includes basic hazard radius in calm conditions The range of cargo displacement caused by wind ;

[0024] The basic danger radius The calculation method of is as follows;

[0025] Obtain the maximum lateral acceleration a of the cargo during movement;

[0026] Calculate the swing angle of the cargo , where g is the acceleration due to gravity;

[0027] Calculate the amplitude of cargo swing due to wind force , where L is the length of the sling on the tower crane where the hook is located;

[0028] Calculate the swing range of cargo on the sling , where k is the safety factor, 0.1≦k≦0.2;

[0029] .

[0030] Optionally, the executing of the dangerous area dynamic calculation strategy to calculate the range of the dangerous area in real time also includes:

[0031] The cargo offset range The calculation method is as follows:

[0032] Calculate the acceleration generated by the wind at time t:

[0033] , where m is the mass of the goods, is the area of ​​cargo facing windward, is the air resistance coefficient;

[0034] Calculate the vertical component of the wind's acceleration:

[0035] ;

[0036] Get the destination location of the goods ;

[0037] Get the speed of the tower crane transporting cargo at time t ;

[0038] Calculate the transportation time of goods from current location to target location ;

[0039] Calculate cargo offset range ;

[0040] calculate , then the danger zone is the current location of the cargo As the center of the circle, A circle with a radius of .

[0041] Optionally, the execution of the construction worker position prediction strategy predicts the position of each construction worker at a future time. Locations include:

[0042] Count the number of all construction workers e in the monitoring range and number the construction workers from 1 to e;

[0043] Record the moving speed vector of construction worker i at any time t , where 1≦i≦e;

[0044] Calculate the number of construction personnel Location = ,get .

[0045] Optionally, the predicted construction worker at a future time location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area, including:

[0046] Get the destination location of the goods ;

[0047] calculate , as the weight in the x-axis direction;

[0048] calculate , as the weight in the y-axis direction;

[0049] Get the moment The location of the goods ;

[0050] calculate ;

[0051] Get the moment The radius of the danger zone ;

[0052] Compare and The size relationship of

[0053] like , then it is determined that construction worker i is at time Entering a dangerous area;

[0054] like , then construction worker i at time Did not enter the danger zone.

[0055] Optionally, if the prediction is at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area, including:

[0056] At time t, the new moving direction planned by construction worker i entering the dangerous area is predicted, and the new moving direction is recorded as ;

[0057] h, where h is the unit normal vector pointing outside the danger zone, To adjust the parameters;

[0058] New direction of movement Satisfaction at the moment of .

[0059] Optionally, if the prediction is at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. Locations include:

[0060] Get the speed of the tower crane transporting cargo at time t ;

[0061] Get the unit direction vector of the cargo at time t ;

[0062] Get the acceleration generated by wind:

[0063] ;

[0064] Calculate the actual speed of the cargo after being affected by wind acceleration ;

[0065] In order to offset the deviation caused by wind, calculate and adjust the moving direction vector of the goods ;

[0066] , at time t, adjust the direction of the moving goods to ;

[0067] Calculate the direction of movement of the goods Position at the moment , where the goods arrive at the target location The total time is recorded as ;

[0068] When calculating and adjusting the moving direction vector of the goods When, meet Minimum.

[0069] The present invention has the following beneficial effects:

[0070] 1. This construction geological data management and decision-making system based on virtual reality can simplify the space management and data processing of the construction site by establishing a two-dimensional coordinate system with the tower position of the tower crane as the origin. In the process of transporting goods by the tower crane, all calculations of positions, paths and dangerous areas are based on this fixed coordinate system, avoiding complex three-dimensional space calculations and improving the calculation efficiency of the system. This approach allows various data to be clearly calibrated in a unified coordinate framework, thereby simplifying the monitoring and management of the construction site. In addition, the fixed coordinate system facilitates coordination with other construction equipment and personnel to ensure the stability and accuracy of the system operation.

[0071] 2. This construction geological data management and decision-making system based on virtual reality can accurately track the movement trajectory of goods by recording the location of goods transported by tower cranes in real time, and timely understand the current location of goods and the dynamic situation of the construction site. This function is crucial to safety management during the construction process, and can effectively avoid collisions between goods and construction personnel and other equipment, and reduce safety risks at the construction site. At the same time, real-time location records also provide an important basis for subsequent data analysis, which helps to optimize transportation route planning, adjust operation strategies, and provide accurate data support for construction decisions, thereby improving the efficiency and safety of tower crane operations.

[0072] 3. This construction geological data management and decision-making system based on virtual reality can dynamically adjust the movement trajectory of goods by measuring wind speed and direction in real time to avoid cargo deviation caused by wind. Changes in wind speed and direction have an important impact on tower crane operations, especially in strong winds, when wind may cause cargo to swing or deviate from the original trajectory. Real-time wind monitoring allows the system to correct cargo according to real-time changes, reduce wind interference with operations, and ensure the stability and safety of the cargo transportation process. In addition, real-time data on wind speed and direction can also provide accurate early warning information for construction personnel, allowing them to avoid possible dangers in advance and improve the safety of the construction environment.

[0073] 4. This virtual reality-based building geological data management and decision-making system can effectively isolate dangerous contact between construction personnel and goods and ensure the safety of the construction site by setting and calculating the scope of the dangerous area in real time. During the transportation of goods, the scope of the dangerous area may change due to factors such as wind force and cargo swing. By calculating the dangerous area in real time and dynamically, it is possible to accurately predict whether the actions of construction personnel will enter the area, so as to issue warnings in time and take corresponding preventive measures. This avoids the lag and error of manual judgment, improves the real-time and accuracy of safety warnings, and effectively reduces the accident rate at the construction site.

[0074] 5. This virtual reality-based building geological data management and decision-making system can identify the risk of construction workers entering dangerous areas in advance through the construction workers' position prediction strategy, so as to take corresponding protective measures. The movement trajectory of construction workers on site is not fixed. Therefore, by predicting the future position of construction workers, it is possible to accurately determine whether they are likely to enter dangerous areas and intervene in advance. This strategy avoids the passive tracking of construction workers' dynamics in traditional methods. By planning the movement path in advance, it provides construction workers with effective risk avoidance suggestions or adjusts the path, reduces safety hazards, and ensures the safety of personnel during the construction process.

[0075] 6. This construction geological data management and decision-making system based on virtual reality can ensure that construction workers can safely avoid dangerous areas and reduce possible accidents by planning new movement directions for construction workers entering dangerous areas. The dynamic behavior of construction workers will be affected by many factors, such as task requirements, complexity of the construction site, etc., and it is difficult to foresee the exact position at every moment. By predicting the future path of construction workers and providing them with new movement directions, the system can actively adjust their routes when construction workers are about to enter dangerous areas to avoid danger. This strategy effectively improves construction safety and reduces the risk of accidents caused by people accidentally entering dangerous areas.

[0076] 7. This construction geological data management and decision-making system based on virtual reality can adjust the transportation route of goods in time under the influence of factors such as wind force through the cargo movement path planning strategy to ensure that the goods arrive at the target location smoothly and safely. Wind force and other external factors will have an offset effect on the goods, and traditional methods are difficult to respond to these dynamic changes in real time. Through the dynamic adjustment of the cargo path, the system can calculate the required correction path for the goods based on real-time data to avoid the impact of external factors such as wind force on the safety of the goods. This strategy improves the stability of tower crane transportation, ensures that the goods arrive at the target location safely and quickly, and further improves construction efficiency and safety.

[0077] 8. This construction geological data management and decision-making system based on virtual reality reflects the relative influence between construction personnel and the target location of goods in the horizontal and vertical directions by calculating the weights in the x-axis and y-axis directions. The weight is calculated based on the distance between the construction personnel and the target location of the goods, usually in the inverse of the distance. By introducing these weights, the system can dynamically adjust the judgment of dangerous areas to avoid misjudgment caused by relying solely on straight-line distance. If the construction personnel approach the target location of the goods in a certain direction, the weight of the relevant direction increases, and the system will pay more attention to the danger in that direction, thereby achieving more accurate hazard assessment and path adjustment, and improving construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 It is a schematic diagram of the process of the present invention.

[0079] Figure 2 It is a schematic diagram of the structure of the tower crane of the present invention. DETAILED DESCRIPTION

[0080] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0081] Embodiment 1, refer to Figure 1 , a building geological data management and decision-making system based on virtual reality, including:

[0082] Existing virtual reality (VR) technology brings users into a three-dimensional interactive space through an immersive computer-generated environment, where users can interact in real time through senses such as vision and hearing. VR is widely used in the fields of construction, medical care, education, etc., and can simulate real-world scenes and operations. Through head-mounted display devices (such as VR helmets) and sensors, users can interact with objects in the virtual environment to achieve a more intuitive experience and accurate decision support. In the field of construction, VR can be used for project visualization, construction process simulation, and safety training. This virtual reality-based building geological data management and decision-making system uses virtual reality technology to display tower crane operations, cargo lifting processes, and construction personnel positions in real time. By establishing a two-dimensional coordinate system in a virtual environment, the system can dynamically display the position of tower crane cargo, wind speed, wind direction, and real-time changes in dangerous areas. Virtual reality technology makes the path prediction of construction personnel, cargo movement path planning, and simulation of dangerous areas more intuitive and easy to understand. Managers can interact in the virtual environment and adjust the cargo path and the movement direction of construction personnel in a timely manner to avoid overlapping dangerous areas. In this way, virtual reality effectively supports safety monitoring, dynamic adjustment, and decision optimization at the construction site, improving the safety and efficiency of construction.

[0083] A two-dimensional coordinate system is established on the ground with the position of the tower crane on the ground as the origin;

[0084] In this embodiment, the structural diagram of the tower crane is as follows: Figure 2 shown.

[0085] By establishing a two-dimensional coordinate system with the tower position of the tower crane as the origin, the spatial management and data processing of the construction site can be simplified. During the transportation of goods by the tower crane, all calculations of positions, paths and dangerous areas are based on this fixed coordinate system, avoiding complex three-dimensional space calculations and improving the calculation efficiency of the system. This approach allows various data to be clearly calibrated in a unified coordinate framework, thereby simplifying the monitoring and management of the construction site. In addition, the fixed coordinate system facilitates coordination with other construction equipment and personnel, ensuring the stability and accuracy of the system operation.

[0086] Record the position of the cargo transported by the tower crane in real time, and record the position of the cargo at any time t as ,in, is a two-dimensional vector that describes the position of the goods in the two-dimensional coordinate system. Specifically, It represents the horizontal coordinate of the goods in the two-dimensional coordinate system at time t. It represents the vertical coordinate of the goods in the two-dimensional coordinate system at time t. Used to specify variables related to goods;

[0087] Measure the wind speed and direction of the cargo in real time, and record the wind speed at any time t as , the wind direction at any time t relative to the direction of cargo movement is recorded as ,in, Used to indicate variables related to wind;

[0088] Set up dangerous areas where construction workers are prohibited from entering during cargo movement;

[0089] Execute the dynamic calculation strategy of dangerous areas and calculate the scope of dangerous areas in real time;

[0090] Obtain the length of the tower crane boom, recorded as the first length;

[0091] Set the second length;

[0092] Calculate the first length + the second length, and record the result as the third length;

[0093] Make a circle with the origin as the center and the third length as the radius, which is recorded as the monitoring range;

[0094] The position of each construction worker in the monitoring range is recorded in real time, and the position of construction worker i at any time t is recorded as ;

[0095] Execute the construction worker location prediction strategy to predict the location of each construction worker at the next moment location;

[0096] According to the prediction of each construction worker at the next moment location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area;

[0097] If the prediction is at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area;

[0098] If the prediction is at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. location and at the time Move the goods to the planned location.

[0099] By recording the location of the cargo transported by the tower crane in real time, the movement trajectory of the cargo can be accurately tracked, and the current location of the cargo and the dynamic situation of the construction site can be timely understood. This function is crucial to safety management during the construction process, and can effectively avoid collisions between cargo and construction personnel and other equipment, and reduce safety risks at the construction site. At the same time, real-time location records also provide an important basis for subsequent data analysis, which helps to optimize transportation route planning, adjust operation strategies, and provide accurate data support for construction decisions, thereby improving the efficiency and safety of tower crane operations.

[0100] The method of executing the dangerous area dynamic calculation strategy and calculating the range of the dangerous area in real time includes:

[0101] The shape of the dangerous area is circular;

[0102] The radius of the danger zone at any time t is recorded as ,in, Includes basic hazard radius in calm conditions The range of cargo displacement caused by wind ;

[0103] The basic danger radius The calculation method of is as follows;

[0104] Obtain the maximum lateral acceleration a of the cargo during movement;

[0105] Calculate the swing angle of the cargo , where g is the acceleration due to gravity;

[0106] Calculate the amplitude of cargo swing due to wind force , where L is the length of the sling on the tower crane where the hook is located;

[0107] Calculate the swing range of cargo on the sling , where k is the safety factor, 0.1≦k≦0.2;

[0108] .

[0109] The method of executing the dangerous area dynamic calculation strategy and calculating the range of the dangerous area in real time also includes:

[0110] The cargo offset range The calculation method is as follows:

[0111] Calculate the acceleration generated by the wind at time t:

[0112] , where m is the mass of the goods, is the area of ​​cargo facing windward, is the air resistance coefficient;

[0113] Calculate the vertical component of the wind's acceleration:

[0114] ;

[0115] Get the destination location of the goods ;

[0116] Get the speed of the tower crane transporting cargo at time t ;

[0117] Calculate the transportation time of goods from current location to target location ;

[0118] Calculate cargo offset range

[0119] ;

[0120] calculate , then the danger zone is the current location of the cargo As the center of the circle, A circle with a radius of .

[0121] By setting and calculating the scope of the danger zone in real time, the dangerous contact between construction workers and goods can be effectively isolated to ensure the safety of the construction site. During the transportation of goods, the scope of the danger zone may change due to factors such as wind and cargo swing. By calculating the danger zone in real time and dynamically, it is possible to accurately predict whether the actions of construction workers will enter the zone, so as to issue warnings in time and take corresponding preventive measures. This avoids the lag and error of manual judgment, improves the real-time and accuracy of safety warnings, and effectively reduces the accident rate at the construction site.

[0122] The execution of the construction personnel position prediction strategy predicts each construction personnel at the next moment. Locations include:

[0123] Count the number of all construction workers e in the monitoring range and number the construction workers from 1 to e;

[0124] Record the moving speed vector of construction worker i at any time t , where 1≦i≦e;

[0125] Calculate the number of construction personnel Location = ,get .

[0126] The construction worker location prediction strategy can identify the risk of construction workers entering dangerous areas in advance, so that corresponding protective measures can be taken. The movement trajectory of construction workers on site is not fixed. Therefore, by predicting the future location of construction workers, it is possible to accurately determine whether they are likely to enter dangerous areas and intervene in advance. This strategy avoids the passive tracking of construction workers in traditional methods. By planning the movement path in advance, effective risk avoidance suggestions or path adjustments are provided to construction workers, reducing safety hazards and ensuring the safety of personnel during the construction process.

[0127] According to the prediction, each construction worker will location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area, including:

[0128] Get the destination location of the goods ;

[0129] calculate , as the weight in the x-axis direction;

[0130] calculate , as the weight in the y-axis direction;

[0131] The calculation of the x-axis and y-axis weights reflects the relative influence between the construction personnel and the target location of the cargo in the horizontal and vertical directions. The weight is calculated based on the distance between the construction personnel and the target location of the cargo, usually in the inverse of the distance. By introducing these weights, the system can dynamically adjust the judgment of the dangerous area to avoid misjudgment caused by relying solely on the straight-line distance. If the construction personnel approach the target location of the cargo in a certain direction, the weight of the relevant direction increases, and the system will pay more attention to the danger in that direction, thereby achieving more accurate hazard assessment and path adjustment, and improving construction safety.

[0132] Get the moment The location of the goods ;

[0133] calculate ;

[0134] Get the moment The radius of the danger zone ;

[0135] Compare and The size relationship of

[0136] like , then it is determined that construction worker i is at time Entering a dangerous area;

[0137] like , then construction worker i at time Did not enter the danger zone.

[0138] The construction worker location prediction strategy can identify the risk of construction workers entering dangerous areas in advance, so that corresponding protective measures can be taken. The movement trajectory of construction workers on site is not fixed. Therefore, by predicting the future location of construction workers, it is possible to accurately determine whether they are likely to enter dangerous areas and intervene in advance. This strategy avoids the passive tracking of construction workers in traditional methods. By planning the movement path in advance, effective risk avoidance suggestions or path adjustments are provided to construction workers, reducing safety hazards and ensuring the safety of personnel during the construction process.

[0139] If the prediction is made at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area, including:

[0140] At time t, the new moving direction planned by construction worker i who enters the dangerous area is predicted, and the new moving direction is recorded as ;

[0141] h, where h is the unit normal vector pointing outside the danger zone, To adjust the parameters;

[0142] New direction of movement Satisfaction at the moment of .

[0143] By planning new movement directions for construction workers entering dangerous areas, it is possible to ensure that construction workers can safely avoid dangerous areas and reduce possible accidents. The dynamic behavior of construction workers is affected by many factors, such as task requirements, complexity of the construction site, etc., and it is difficult to foresee their exact position at every moment. By predicting the future path of construction workers and providing them with new movement directions, the system can actively adjust their routes when construction workers are about to enter dangerous areas to avoid danger. This strategy effectively improves construction safety and reduces the risk of accidents caused by people accidentally entering dangerous areas.

[0144] If the prediction is made at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. Locations include:

[0145] Get the speed of the tower crane transporting cargo at time t ;

[0146] Get the unit direction vector of the cargo at time t ;

[0147] Get the acceleration generated by wind:

[0148] ;

[0149] Calculate the actual speed of the cargo after being affected by wind acceleration ;

[0150] In order to offset the deviation caused by wind, calculate and adjust the moving direction vector of the goods ;

[0151] , at time t, adjust the direction of the moving goods to ;

[0152] Calculate the direction of movement of the goods Position at the moment , where the goods arrive at the target location The total time is recorded as ;

[0153] When calculating and adjusting the moving direction vector of the goods When, meet Minimum.

[0154] Through the cargo movement path planning strategy, the cargo transportation route can be adjusted in time under the influence of factors such as wind, ensuring that the cargo arrives at the target location smoothly and safely. Wind and other external factors will have an offset effect on the cargo, and traditional methods are difficult to respond to these dynamic changes in real time. Through the dynamic adjustment of the cargo path, the system can calculate the required correction path for the cargo based on real-time data to avoid the impact of external factors such as wind on the safety of the cargo. This strategy improves the stability of tower crane transportation, ensures that the cargo arrives at the target location safely and quickly, and further improves construction efficiency and safety.

[0155] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0156] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The building geological data management and decision-making system based on virtual reality is characterized by: include: A two-dimensional coordinate system is established on the ground with the position of the tower crane on the ground as the origin; Record the position of the cargo transported by the tower crane in real time, and record the position of the cargo at any time t as ,in, is a two-dimensional vector that describes the position of the goods in the two-dimensional coordinate system. Specifically, It represents the horizontal coordinate of the goods in the two-dimensional coordinate system at time t. It represents the vertical coordinate of the goods in the two-dimensional coordinate system at time t. Used to specify variables related to goods; Measure the wind speed and direction of the cargo in real time, and record the wind speed at any time t as , the wind direction at any time t relative to the direction of cargo movement is recorded as ,in, Used to indicate variables related to wind; Set up dangerous areas where construction workers are prohibited from entering during cargo movement; Execute the dynamic calculation strategy of dangerous areas and calculate the scope of dangerous areas in real time; The shape of the dangerous area is circular; The radius of the danger zone at any time t is recorded as ,in, Includes basic hazard radius in calm conditions The range of cargo displacement caused by wind ; The basic danger radius The calculation method of is as follows; Obtain the maximum lateral acceleration a of the cargo during movement; Calculate the swing angle of the cargo , where g is the acceleration due to gravity; Calculate the amplitude of cargo swing due to wind force , where L is the length of the sling on the tower crane where the hook is located; Calculate the swing range of cargo on the sling , where k is the safety factor, 0.1≦k≦0.2; ； The cargo offset range The calculation method is as follows: Calculate the acceleration generated by the wind at time t: , where m is the mass of the cargo, A is the area of ​​the cargo facing the wind, is the air resistance coefficient; Calculate the vertical component of the wind's acceleration: ； Get the destination location of the goods ; Get the speed of the tower crane transporting cargo at time t ; Calculate the transportation time of goods from current location to target location ; Calculate cargo offset range: ； calculate , then the danger zone is the current location of the cargo As the center of the circle, is a circle with radius Obtain the length of the tower crane boom, recorded as the first length; Set the second length; Calculate the first length + the second length, and record the result as the third length; Make a circle with the origin as the center and the third length as the radius, which is recorded as the monitoring range; The position of each construction worker in the monitoring range is recorded in real time, and the position of construction worker i at any time t is recorded as ; Execute the construction worker location prediction strategy to predict the location of each construction worker at the next moment location; According to the prediction of each construction worker at the next moment location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area; If the prediction is at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area; If the prediction is at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. location and at the time Move the goods to the planned location.

2. The virtual reality-based building geological data management and decision-making system according to claim 1 is characterized in that: The execution of the construction personnel position prediction strategy predicts each construction personnel at the next moment. Locations include: Count the number of all construction workers e in the monitoring range and number the construction workers from 1 to e; Record the moving speed vector of construction worker i at any time t , where 1≦i≦e; Calculate the number of construction personnel Location = ,get .

3. The virtual reality-based building geological data management and decision-making system according to claim 2 is characterized in that: According to the prediction, each construction worker will location, implement the construction personnel danger judgment strategy, and judge at the moment Whether construction workers enter the dangerous area, including: Get the destination location of the goods ; calculate , as the weight in the x-axis direction; calculate , as the weight in the y-axis direction; Get the moment The location of the goods ; calculate ; Get the moment The radius of the danger zone ; Compare and The size relationship of like , then it is determined that construction worker i is at time Entering a dangerous area; like , then construction worker i at time Did not enter the danger zone.

4. The virtual reality-based building geological data management and decision-making system according to claim 3 is characterized by: If the prediction is made at time When construction workers enter a dangerous area, execute the personnel movement direction planning strategy and plan a new movement direction for the construction workers entering the dangerous area, including: At time t, the new moving direction planned by construction worker i entering the dangerous area is predicted, and the new moving direction is recorded as ; h, where h is the unit normal vector pointing outside the danger zone, To adjust the parameters; New direction of movement Satisfaction at the moment of .

5. The virtual reality-based building geological data management and decision-making system according to claim 3 is characterized by: If the prediction is made at time When construction workers enter the dangerous area, implement the cargo movement path planning strategy and plan the cargo movement at the time. Locations include: Get the speed of the tower crane transporting cargo at time t ; Get the unit direction vector of the cargo at time t ; Get the acceleration generated by wind: ； Calculate the actual speed of the cargo after being affected by wind acceleration ; In order to offset the deviation caused by wind, calculate and adjust the moving direction vector of the goods ; , at time t, adjust the direction of the moving goods to ; Calculate the direction of movement of the goods Position at the moment , where the goods arrive at the target location The total time is recorded as ; When calculating and adjusting the moving direction vector of the goods When, meet Minimum.

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