A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive

Abstract

The present invention discloses a numerical simulation sand table system for intelligent control of infrastructure based on mechanical drive. The sand table system is provided with a monitoring device and a simulation calculation terminal. By combining the sand table entity with the numerical simulation of mechanical simulation software, considering different environmental conditions, and using a holographic projection device to realize the real-time dynamic display of simulation results, it can truly deduce and change industrial power structures. It not only has the function of teaching demonstration, but also can help managers timely discover existing potential safety hazard problems, and help engineering personnel carry out targeted design optimization to avoid safety accidents.

Description

Technical Field

[0001] The present invention relates to the field of industrial power technology, and specifically to a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive. Background Art

[0002] The sand table can restore the real scenario through micro-scale entities, and has the characteristics of being vivid and intuitive. It can not only reflect the characteristics and mutual relationships of each component of the system, but also show the internal operation principle of the system. It can be used for design display, function explanation, teaching use, etc., and is widely used in many fields such as industry. However, the traditional sand table has the disadvantages of large floor area, poor visualization effect, and incomplete revelation of mechanisms. At present, it is difficult to meet the requirement of presenting complex dynamic change information. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive. By setting monitoring devices and simulation calculation terminals, combining the sand table entity with the numerical simulation of mechanical simulation software, considering different environmental conditions, and using a holographic projection device to realize the real-time dynamic display of simulation results, the sand table system can truly deduce the changes of industrial power structures. It not only has the function of teaching demonstration, but also can help managers timely discover potential safety hazard problems and help engineers carry out targeted design optimization to avoid safety accidents.

[0004] To achieve the above object, the present invention adopts the following technical solutions: Design a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive, characterized in that the system includes: a temperature and humidity sensor, a wind speed sensor, a displacement sensor, a strain gauge, a high-definition camera, a simulation calculation terminal, a holographic projection device, and a parallel circuit. The temperature and humidity sensor, the wind speed sensor, the displacement sensor, and the high-definition camera are connected to the simulation calculation terminal through the parallel circuit. The simulation calculation terminal is connected to the holographic projection device through a conductive wire. The strain gauge is connected to a strain conditioner module, the strain conditioner module is connected to a data collector, and the data collector is connected to the simulation calculation terminal through the parallel circuit;

[0005] A number of identical temperature and humidity sensors are arranged on the center line in the horizontal direction of the sand table. Among them, the distance between any two adjacent temperature and humidity sensors is equal, and the temperature and humidity sensors at both edges are equidistant from the corresponding edges of the sand table; the average value of the measurement data of the number of temperature and humidity sensors is used as the temperature and humidity data of the entire sand table;

[0006] A number of identical wind speed sensors are arranged on the center line of the sand table by means of flange installation. Among them, the distance between any two adjacent wind speed sensors is equal, and the wind speed sensors at both side edges are at equal distances from the corresponding side edges of the sand table; the average value of the measurement data of the number of wind speed sensors is used as the wind speed data of the entire sand table;

[0007] A number of displacement sensors are fixedly installed at equal distances on each circumference centered on the center of the sand table entity model and with a fixed radius through sensor brackets, and the average value of the measurement data of the number of displacement sensors is used as the displacement data of the sand table entity model;

[0008] At least strain gauges are installed at equal distances in the vertical direction of each sand table entity model, and the base of the strain gauge is bonded to the corresponding position of the sand table entity model through an adhesive to ensure that both can produce displacement deformation simultaneously;

[0009] The high-definition camera is fixed to the upper part of the pole by self-tapping screws. The bottom of the pole is installed at the middle position outside the left side of the sand table through a bolt structure. The high-definition camera is located above the left side of the sand table and its field of view completely covers the sand table;

[0010] The holographic projection device adopts an upright pyramid-shaped 360-degree holographic projection device of model JXT-1900E, which is mainly composed of a positive pyramid-shaped cone prism, a projector, and a data cable; the projector of model PPX3615 is arranged directly above the positive pyramid-shaped cone prism. The sizes of the four sides at the bottom of the positive pyramid-shaped cone prism correspond to the sizes of the edges at the top surface of the four-side frame of the sand table. The bottom of the positive pyramid-shaped cone prism is buckled on the top surface of the sand table frame; the holographic projection device 7 is installed directly above the sand table through a projector bracket. By adjusting the position of the projector, the 3D image output by the projector is made to coincide with the sand table entity model, and finally the virtual projection of the sand table is realized;

[0011] The simulation calculation terminal consists of a high-configuration server and a high-definition display screen. The temperature and humidity sensors, wind speed sensors, displacement sensors, data acquisition instrument, and high-definition camera are connected to the high-configuration server through a parallel circuit. The high-configuration server is connected to the projector through a data cable, and the high-configuration server is connected to the high-definition display screen through a conducting wire.

[0012] Compared with the prior art, the advantages of the present invention are as follows: The sand table system uses a novel monitoring device that can collect data on temperature, humidity, wind speed, displacement, stress, and camera views. It is easy to use, has high measurement accuracy, and a wide measurement range, providing a data basis for accurate and realistic simulation calculations. The monitoring device is divided into five parts and can be independently monitored in parallel, avoiding the problem of complete failure of the monitoring device and ensuring the normal use of the sand table system to a large extent. The sand table system can achieve a three-dimensional projection effect of the numerical simulation results on the physical sand table through a holographic projection device. It enables the audience to clearly understand the possible displacement, stress, and temperature field changes in the industrial power structure, solving problems such as poor visualization effect, incomplete mechanism revelation, and difficulty in meeting the presentation requirements of complex dynamic changes in traditional sand table systems. Through simulation calculations and holographic projection technology, not only can the simulation results be dynamically presented, but also the actual situation of the structure can be more realistically reproduced. It serves both as a teaching demonstration and helps managers promptly discover potential safety hazards, assist engineering personnel in optimizing the design in a targeted manner, avoid the occurrence of safety accidents, and provide scientific guidance for the intelligent research of industrial power sand table systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a top view structural schematic diagram of an embodiment of a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive of the present invention (for the convenience of structural expression, the wind speed sensor in the middle is moved to the right to avoid view overlap).

[0014] Figure 2 FIG. is a side view structural schematic diagram of an embodiment of a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive of the present invention.

[0015] Figure 3 FIG. is an installation schematic diagram of a strain gauge of an embodiment of a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive of the present invention.

[0016] Figure 4 FIG. is a structural schematic diagram of a strain gauge of an embodiment of a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive of the present invention.

[0017] In the figure: 1 - temperature and humidity sensor; 2 - wind speed sensor; 3 - displacement sensor; 4 - strain gauge; 5 - high-definition camera; 6 - simulation calculation terminal; 7 - holographic projection device; 8 - sand table physical model; 9 - parallel circuit;

[0018] 4-1 - base; 4-2 - sensitive grid; 4-3 - covering layer; 4-4 - lead wire;

[0019] 5-1 - lens; 5-2 - image sensor; 5-3 - signal processor; 5-4 - pole;

[0020] 6-1 - High-configuration server; 6-2 - High-definition display screen;

[0021] 7-1 - Regular pyramid-shaped cone prism; 7-2 - Projector; 7-3 - Data cable; 7-4 - Projector support. Detailed implementation manner

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] The present invention provides a numerical simulation sand table system for intelligent control of infrastructure based on mechanical drive. The system includes: a temperature and humidity sensor 1, a wind speed sensor 2, a displacement sensor 3, a strain gauge 4, a high-definition camera 5, a simulation calculation terminal 6, a holographic projection device 7, and a parallel circuit 9. The temperature and humidity sensor 1, the wind speed sensor 2, the displacement sensor 3, and the high-definition camera 5 are connected to the simulation calculation terminal 6 through the parallel circuit 9. The simulation calculation terminal 6 is connected to the holographic projection device 7 through a conductive wire. The strain gauge 4 is connected to a strain conditioner module, and the strain conditioner module is connected to a data collector. The data collector is connected to the simulation calculation terminal 6 through the parallel circuit 9;

[0024] As an embodiment, the strain conditioner module is an 8-channel strain conditioner module of YSV7008, and the data collector is a 64-channel 24-bit data collector of YSV8064.

[0025] A number of identical temperature and humidity sensors 1 are arranged on the center line in the horizontal direction of the sand table. Among them, the distance between any two adjacent temperature and humidity sensors 1 is equal, and the temperature and humidity sensors 1 at the two side edges are equidistant from the corresponding side edges of the sand table. The average value of the measurement data of the number of temperature and humidity sensors 1 is used as the temperature and humidity data of the entire sand table.

[0026] As an embodiment, three identical temperature and humidity sensors 1 are installed on the center line of the sand table parallel to the long side of the sand table, and the two sensors on both sides are respectively installed 100 mm away from the edge of the sand table. The average value of 3 sets of measurement data is taken as the temperature and humidity of the entire sand table to reduce errors.

[0027] The temperature and humidity sensor 1 is an HMP155A type temperature and humidity sensor, which consists of a probe, a temperature sensor, a humidity sensor, and a conversion circuit connection line. The probe uses an ICAP180R heating type probe, the temperature sensor uses a platinum resistance temperature sensor, the humidity sensor uses a humidity sensitive capacitance sensor, and the conversion circuit connection line uses a UT-890A type USB to RS-485 conversion line with a fixed length of 3m. The length can be adjusted by connecting multiple conversion lines in series to meet the needs of different sand table sizes. When the probe senses the external temperature change, the platinum resistance in the platinum resistance temperature sensor will generate a corresponding functional change to obtain temperature information; when the external humidity changes, the humidity sensitive material in the humidity sensitive capacitance sensor will sense the change of moisture in the air, and then the humidity sensitive capacitance will change accordingly to obtain humidity information. The obtained temperature and humidity information is transmitted to the high configuration server 6-1 in the simulation calculation terminal 6 via the conversion circuit connection line.

[0028] A number of identical wind speed sensors 2 are arranged on the center line of the sand table by means of flange mounting. Among them, the distance between any two adjacent wind speed sensors 2 is equal, and the wind speed sensors 2 at both edges are equidistant from the corresponding side of the sand table edge. The average value of the measurement data of the number of wind speed sensors 2 is used as the wind speed data of the entire sand table.

[0029] As an embodiment, three wind speed sensors 2 are installed on the center line of the sand table parallel to the long side of the sand table by means of flange mounting, and two of the wind speed sensors 2 are respectively installed 300mm away from the edge of the sand table. The lower part of the sensor is fixed on a flange plate with a diameter of 65mm through a threaded flange connection, and 4 mounting holes with a diameter of 5mm are opened on a circumference with a diameter of 48mm, and it is fixed on the sand table using bolts. The average value of the 3 wind speed sensors is taken for analysis to reduce errors.

[0030] The wind speed sensor 2 uses an NHFS45 type three-cup wind speed sensor, which mainly consists of a wind cup, a circuit module, and a housing, and its measurement range can reach 60m / s. The main material of this sensor is high-quality polymer carbon fiber, which has good corrosion resistance. When in use, the wind cup on the sensor rotates around the central axis to sense wind force information, and the sensed information generates a pulse signal through the circuit module inside the sensor, thereby obtaining wind speed information. The circuit module integrates a photoelectric conversion mechanism, an industrial microcomputer processor, a standard current generator, a circuit driver, etc. The entire circuit module is surrounded by a housing, and the measured data is transmitted to the high configuration server 6-1 in the simulation calculation terminal 6 via a parallel line 9.

[0031] A number of displacement sensors 3 are fixedly installed at equal intervals through sensor brackets on each circumference centered on the center of the sand table physical model 8 and with a fixed radius, so as to ensure accurate displacement information of each model in the sand table. As an embodiment, 4 displacement sensors 3 are fixedly installed at equal intervals through sensor brackets on each circumference centered on the center of the sand table physical model 8 and with a radius of 100 mm. The average value of the measurement data of the several displacement sensors 3 is used as the displacement data of the sand table physical model 8.

[0032] The displacement sensor 3 uses a CD22 type laser displacement sensor, which mainly consists of a laser emission system, an imaging system, an image sensor and a sensor support. Its measurement range is 150 mm and the measurement accuracy can reach 1 μm. When measuring the displacement of the sand table physical model, first, a line laser beam is emitted by the line laser emission system and vertically incident on the surface of the measured sand table physical model 8 to form a uniform diffuse reflection beam. Then, the beam is converged on the image sensor through the imaging system to form an image point of the measured sand table physical model 8. When the measured sand table physical model 8 undergoes displacement, the image point moves accordingly, and thus the displacement information of the measured sand table physical model 8 can be measured. The measured displacement information is uploaded to the high - configuration server 6 - 1 in the simulation calculation terminal 6 through the parallel circuit 9.

[0033] At least on a part of the vertical direction of each sand table physical model 8, strain gauges 4 are installed at equal intervals. The base of the strain gauge 4 is bonded to the corresponding position of the sand table physical model 8 through an adhesive to ensure that both can generate displacement deformation simultaneously. As an embodiment, a strain gauge 4 is installed every 50 mm along the vertical direction of the sand table physical model 8. At the same time, for more accurate results, denser arrangements can be made at any key part of the model.

[0034] The strain gauge 4 uses a resistive strain gauge of model BF120 with a size of 9.0 mm×5.6 mm, which mainly consists of a base 4 - 1, a sensitive grid 4 - 2, a cover layer 4 - 3 and lead wires 4 - 4. The strain gauge 4 is connected to the strain conditioner module through its lead wires 4 - 4. The strain conditioner module is connected to the data acquisition instrument. The data acquisition instrument transmits the measured data to the high - configuration server 6 - 1 of the simulation calculation terminal 6 through the parallel circuit 9, and stress calculation is performed by the YSV engineering test and signal analysis software V8.0 on the high - configuration server 6 - 1.

[0035] The data collector can be directly connected to the high - configuration server 6 - 2 through an RS485 - to - USB cable for data collection. Since the strain gauges of the present invention need to be encrypted at the key parts of the sand table model, all data collectors can be connected through a hub. The hub is connected to the high - configuration server through an RS485 - to - USB cable, so that multiple groups of data can be collected simultaneously. According to the stress data measured by the strain gauges 4 at multiple positions of the sand table entity model 8, data integration and data processing are carried out through the high - configuration server 6 - 1 to determine the stress - strain data of each measurement point.

[0036] The base material of the strain gauge 4 is phenolic - epoxy, the sensitive grid material is constantan, and the upper covering layer is a plastic film. The sensitive grid 4 - 2 is the key part of the strain gauge 4, made of constantan, which can complete the measurement and output of displacement deformation information, and then transmit the obtained measurement information through the lead - out wire 4 - 4; the main function of the covering layer 4 - 3 is to protect the entire strain gauge 4 system; the base 4 - 1, the sensitive grid 4 - 2, the covering layer 4 - 3 and the lead - out wire 4 - 4 are adhered together by an adhesive to form the whole strain gauge 4, and the corresponding center line is marked on each strain gauge 4. Strain gauges with accurate center positions, no extra air bubbles, good contact and no short - circuit or open - circuit phenomena are selected for application to ensure the measurement accuracy.

[0037] The high - definition camera 5 is fixed to the upper part of the holding rod 5 - 4 through self - tapping screws. The bottom of the holding rod 5 - 4 is installed at the middle position outside the left side of the sand table through a bolt structure. The high - definition camera 5 is located above the left side of the sand table and its field of view completely covers the sand table.

[0038] The high - definition camera 5 uses a full - color night - vision camera with the model number TL - IPC642 - A4, which is mainly composed of a lens 5 - 1, an image sensor 5 - 2, and a signal processor 5 - 3. The pixel reaches 4 million, and the infrared night - vision distance can reach 30m. The scene of the sand table generates an optical image through the lens 5 - 1 and projects it onto the image sensor 5 - 2 to generate an electrical signal. This electrical signal is processed through a series of processes by the signal processor 5 - 3 and then transmitted to the simulation calculation terminal 6 through a parallel line 9 to generate an image. By controlling the rotation and focusing of the camera through the simulation calculation terminal, the panorama of the sand table can be observed, and the supplement and calibration of the displacement of the sand table entity model can be realized.

[0039] As an embodiment, the high - definition camera 5 can monitor the overall situation of the sand table, record the sand table as a whole and the projection, which is convenient for saving data and watching the playback. A video capture card is inserted into the PCI slot of the simulation calculation terminal 6, and the video capture card driver is installed on the simulation calculation terminal 6. A video signal line is connected between the high - definition camera 5 and the simulation calculation terminal 6, and monitoring software is installed on the calculation terminal 6.

[0040] The simulation calculation terminal 6 consists of a high - configuration server 6 - 1 and a high - definition display screen 6 - 2. The high - configuration server 6 - 1 can be rack - mounted, and its processor configuration can be 18 cores, 36 threads, and 3 GHz; the high - definition display screen 6 - 2 uses a display with a screen resolution of 720P or above. The simulation calculation terminal 6 is installed in places such as offices to facilitate data transmission and calculation. The high - configuration server 6 - 1 integrates the mechanical information collected by the wind speed sensor 2, displacement sensor 3, and strain gauge 4 and then transmits it into a mechanical simulation software (the mechanical simulation software is abaqus or ansys, or other simulation software) for numerical simulation calculation, thereby obtaining the displacement, stress, strain, and damage results of the measured model under various loads and external environment changes. Finally, a three - dimensional effect cloud map and video are formed on the high - definition display screen 6 - 2. The high - configuration server 6 - 1 is also installed with YSV engineering test and signal analysis software V8.0.

[0041] The high - configuration server 6 - 1 is set with mechanical simulation software, YSV engineering test and signal analysis software V8.0, and model establishment and processing software. The mechanical simulation software is abaqus or ansys software, and the model establishment and processing software is GiD software.

[0042] To implement the pre - processing, solution, and post - processing stages of finite - element analysis work, the high - configuration server 6 - 1 is set with model establishment and processing software, such as GiD software, which has functions such as geometric modeling, mesh generation, CAD data import, and post - processing result display. GiD adopts an operation mode similar to CAD for pre - processing of finite - element analysis work. According to the CAD drawings of the sand table model and the specification data of models such as transmission towers, the coordinate system of the model and the coordinates of each point of the model are determined. Modeling is carried out through existing modeling software such as GID, ansys, Gmesh, etc., and numerical calculation models of the sand table and transmission towers are established with blocks and rods respectively. After the model is established, mesh dissection is carried out, and then the msh file is exported and saved on the high - configuration server 6 - 1; at the same time, the high - configuration processor needs to be equipped with finite - element analysis software, such as ANSYS, ABAQUS, etc., to implement the solution step of finite - element analysis work; the high - configuration server 6 - 1 is installed with calculation result processing and analysis software. GiD can write the results into various common graphic files, such as BMP, GIF, TPEG, PNG, TGA, TIFF, VRML, etc., and animation formats such as AVI, MEPG. The result display methods supported by post - processing include: banded cloud map display, isoline display, slice display, vector display, deformation display, etc., and the display menu can be customized according to the needs of users for post - processing of calculation data.

[0043] The holographic projection device 7 is installed directly above the sand table through the projector bracket 7-4, and the 3D image is made to coincide with the physical model of the sand table by adjusting the position of the projector.

[0044] The holographic projection device 7 adopts an upright pyramid-shaped 360-degree holographic projection device of model JXT-1900E, which mainly consists of a regular pyramid-shaped cone prism 7-1, a projector 7-2, and a data cable 7-3. The projector 7-2 of model PPX3615 is arranged directly above the regular pyramid-shaped cone prism 7-1. The sizes of the four sides at the bottom of the regular pyramid-shaped cone prism 7-1 correspond exactly to the sizes of the edges at the top surface of the four sides of the sand table frame. The bottom of the regular pyramid-shaped cone prism 7-1 is buckled on the top surface of the sand table frame. The regular pyramid-shaped cone prism 7-1 is made of a phantom imaging film and translucent glass. The sizes of the four sides at the bottom of it correspond exactly to the sizes of the edges at the top surface of the four sides of the sand table frame. The sizes of the four sides at its top are 0.194 times the sizes of the corresponding four sides at the bottom, and the height is 0.74 times the length of the bottom long side. After the simulation calculation terminal 6 obtains the relevant cloud map video through numerical simulation calculation, it is connected to the projector 7-2 through the data cable 7-3 for 3D projection. Through the mirror reflection and reflection effects on the surface of the regular pyramid-shaped cone prism 7-1, a 3D image pattern is finally formed in the center of the prism 7-1. This device positions the projector 7-2 directly above the entire sand table through the projector bracket 7-4, and makes the 3D image coincide with the physical model of the sand table by adjusting the position of the projector 7-2, finally realizing the virtual projection of the sand table.

[0045] The temperature and humidity sensor 1, the wind speed sensor 2, the displacement sensor 3, the data acquisition instrument, and the high-definition camera 5 are connected to the high-configured server 6-1 in the simulation calculation terminal 6 through the parallel circuit 9. The high-configured server 6-1 integrates and stores the received data and conducts simulation calculation. The part of the parallel circuit 9 located on the sand table is arranged inside the sand table. The five components of the temperature and humidity sensor 1, the wind speed sensor 2, the displacement sensor 3, the data acquisition instrument, and the high-definition camera 5 are connected in parallel, so as to facilitate the independent use of one of the functions; when a certain component fails, it will not affect the other modules to continue the monitoring work. The parallel circuit 9 is an integration of multiple types of connecting wires, and each connecting wire among them is independent and at least includes an RS485 to USB cable and a video signal cable.

[0046] The working principle and process of a numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to the present invention:

[0047] (1) Turn on the switch of the corresponding monitoring device for the sand table physical model 8 to be monitored. The detection device includes a temperature and humidity sensor 1, a wind speed sensor 2, corresponding displacement sensors 3, corresponding strain gauges 4, and a high-definition camera 5. The wind speed sensor 2, corresponding displacement sensors 3, and corresponding strain gauges 4 perform mechanical information monitoring.

[0048] The temperature and humidity sensor 1 is installed at the corresponding position according to the foregoing. After the probe senses the external temperature change, the platinum resistance in the platinum resistance temperature sensor will produce a corresponding function change to obtain the temperature information. When the external humidity changes, the humidity-sensitive capacitance sensor will sense the moisture change in the air to obtain the humidity information. The average value of the measurement data of the several temperature and humidity sensors 1 is used as the temperature and humidity data of the entire sand table. The wind speed sensor 2 is installed at the corresponding position according to the foregoing. The wind cup on the sensor rotates around the central axis to sense the wind force information. The sensed information generates a pulse signal through the internal circuit of the sensor to obtain the wind speed information. The precise model displacement information is obtained through the displacement sensor 3. The base of the strain gauge 4 is bonded to the corresponding position of the sand table physical model 8 with an adhesive to ensure that both can produce displacement deformation simultaneously to monitor the displacement deformation information of the sand table. The sensitive grid 4-2 can complete the measurement and output of the displacement deformation information, and then the obtained measurement information is transmitted through the lead wire 4-4. The sand table scene generates an optical image through the lens of the high-definition camera 5 and projects it onto the image sensor to generate an electrical signal. This electrical signal is processed through a series of processes by the signal processor and then transmitted to the simulation calculation terminal 6 through the parallel line 9 to generate an image. The simulation calculation terminal controls the rotation and focusing of the camera to observe the entire sand table, and can realize the supplement and calibration of the displacement of the sand table physical model.

[0049] (2) The temperature and humidity sensor 1, wind speed sensor 2, corresponding displacement sensors 3, corresponding strain gauges 4, and high-definition camera 5 transmit the obtained data to the high-configured server 6-1 in the simulation calculation terminal 6 for data integration. According to the model of the sand table pre-stored in the high-configured server 6-1, relevant mechanical simulation software on the high-configured server 6-1 is used for numerical simulation, thereby obtaining the displacement, stress, strain, and damage results of the measured model under various loads and external environmental conditions and forming relevant cloud maps and videos.

[0050] (3) Project the obtained result cloud map onto the sand table physical model 8 through the holographic projection device 7, and the three-dimensional projection of the numerical simulation calculation results of the measured sand table physical model 8 can be realized.

[0051] Example 1

[0052] Suppose there are 5 transmission towers, 3 transformers, 2 power generation stations and other power infrastructure in a certain place, and they are made into a sand table according to a certain proportion. The sand table is 2m long and 1.6m wide. The components of the present invention are installed in the sand table according to the above corresponding requirements. Among them, 3 temperature and humidity sensors 1 and 3 wind speed sensors 2 are required in the monitoring device, and a total of 40 displacement sensors 3 are required. Taking the physical model of the measured sand table as the center of the circle, draw a circle with a radius of 100mm, and evenly fix 4 displacement sensors at equal intervals on the circumference through the sensor bracket to ensure accurate displacement information of each model in the sand table. On the transmission tower 8 of a 0.1m×0.3m sand table physical model, install a strain gauge 4 every 50mm in the vertical direction, and a total of 6 strain gauges are installed in the vertical direction, and 4 strain gauges are installed at other key positions. A total of 50 strain gauges are installed on all transmission tower models. The high-performance server 6-1 of the simulation calculation terminal 6 is selected with a configuration of 18 cores, 36 threads, and 3GHZ. The high-definition display screen 6-2 uses a monitor with a screen resolution of 1024P. The size of the regular pyramid-shaped cone prism 7-1 of the holographic projection device 7 is: the bottom surface is 2m×1.6m, the top surface size is 0.388m×0.3104m, and the height is 1.48m.

[0053] First, turn on the switch of the monitoring device to collect mechanical information, and then integrate the collected mechanical information on the high-performance server 6-1 through the lead-out wire and parallel circuit. At a certain specific moment, the values of 3 temperature and humidity sensors are 23°C, 25.1°C, and 25.2°C respectively; 41%, 41.2%, and 41.3% respectively; the values of 3 wind speed sensors are 1m / s, 1.1m / s, and 1.2m / s respectively. Then, through the average value calculation of the high-performance server, the humidity around the sand table is (41% + 41.2% + 41.3%) / 3 = 41.25%, the temperature is (23°C + 25.1°C + 25.2°C) / 3 = 24.4°C, and the displacement of the 0.1m*0.3m transmission tower is 0.1mm. The basic information is transmitted into relevant mechanical simulation software for numerical simulation, and the displacement, stress, strain and damage results are obtained and a three-dimensional effect cloud map and video are formed on the high-definition display screen 6-2. Then, it is connected to the projector 7-2 through the data line 7-3 for 3D projection, and through the mirror reflection and reflection on the surface of the regular pyramid-shaped cone prism 7-1, a 3D image is finally formed in the center of the prism.

[0054] The parts not described in the present invention are applicable to the prior art.

Claims

1. A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive, characterized in that The system includes: a temperature and humidity sensor, a wind speed sensor, a displacement sensor, a strain gauge, a high-definition camera, a simulation calculation terminal, a holographic projection device, and a parallel circuit. The temperature and humidity sensor, the wind speed sensor, the displacement sensor, and the high-definition camera are connected to the simulation calculation terminal through the parallel circuit. The simulation calculation terminal is connected to the holographic projection device through a conducting wire. The strain gauge is connected to a strain conditioner module, and the strain conditioner module is connected to a data acquisition instrument. The data acquisition instrument is connected to the simulation calculation terminal through the parallel circuit; A number of identical temperature and humidity sensors are arranged on the center line in the horizontal direction of the sand table. Among them, the distance between any two adjacent temperature and humidity sensors is equal, and the temperature and humidity sensors at both side edges are equidistant from the corresponding side edges of the sand table; the average value of the measurement data of the number of temperature and humidity sensors is used as the temperature and humidity data of the entire sand table; A number of identical wind speed sensors are arranged on the center line of the sand table by means of flange mounting. Among them, the distance between any two adjacent wind speed sensors is equal, and the wind speed sensors at both side edges are equidistant from the corresponding side edges of the sand table; the average value of the measurement data of the number of wind speed sensors is used as the wind speed data of the entire sand table; A number of displacement sensors are fixedly installed at equal intervals on each circumference centered on the center of the sand table physical model and with a fixed radius through sensor brackets. The average value of the measurement data of the number of displacement sensors is used as the displacement data of the sand table physical model; At least a number of strain gauges are installed at equal intervals on a part of the vertical direction of each sand table physical model. The base of the strain gauge is bonded to the corresponding position of the sand table physical model through an adhesive to ensure that the two can produce displacement deformation simultaneously; The high-definition camera is fixed to the upper part of the pole by self-tapping screws. The bottom of the pole is installed at the middle position outside the left side of the sand table through a bolt structure. The high-definition camera is located above the left side of the sand table and its field of view completely covers the sand table; The holographic projection device adopts an upright pyramid-shaped 360-degree holographic projection device of model JXT-1900E, which mainly consists of a positive pyramid-shaped cone prism, a projector, and a data line. The projector of model PPX3615 is arranged directly above the positive pyramid-shaped cone prism. The sizes of the four sides at the bottom of the positive pyramid-shaped cone prism correspond to the sizes of the edges at the top surface of the four sides of the sand table frame. The bottom of the positive pyramid-shaped cone prism is buckled on the top surface of the sand table frame; the holographic projection device is installed directly above the sand table through a projector bracket. By adjusting the position of the projector, the 3D image output by the projector is made to coincide with the sand table physical model, and finally the virtual projection of the sand table is realized; The simulation calculation terminal consists of a high-configuration server and a high-definition display screen. The temperature and humidity sensor, the wind speed sensor, the displacement sensor, the data acquisition instrument, and the high-definition camera are connected to the high-configuration server through the parallel circuit. The high-configuration server is connected to the projector through a data line, and the high-configuration server is connected to the high-definition display screen through a conducting wire; the parallel circuit is an integration of multiple types of connecting wires, and each connecting wire among them is independent.

2. The numerical simulation sand table system for infrastructure intelligent management and control based on mechanical drive according to claim 1, characterized in that, On the high - configuration server, there are mechanical simulation software, YSV Engineering Test and Signal Analysis Software V8.0, and model establishment and processing software. The mechanical simulation software is abaqus or ansys software, and the model establishment and processing software is GiD software.

3. A numerical simulation sand table system for infrastructure intelligent management and control based on mechanical drive according to claim 1, characterized in that, The strain conditioner module is an 8 - channel strain conditioner module of YSV7008, and the data acquisition instrument is a 64 - channel 24 - bit data acquisition instrument of YSV8064. The strain gauge is a resistive strain gauge of model BF120 with a size of 9.0mm×5.6mm.

4. A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, characterized in that, Three identical temperature and humidity sensors are installed on the center line of the sand table parallel to the long side of the sand table. Two of the sensors on both sides are installed 100mm away from the edge of the sand table; the average value of 3 groups of measurement data is taken as the temperature and humidity of the entire sand table.

5. A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, characterized in that, The temperature and humidity sensor is an HMP155A - type temperature and humidity sensor, which consists of a probe, a temperature sensor, a humidity sensor, and a conversion circuit connection wire; the probe is an ICAP180R heating - type probe, the temperature sensor is a platinum resistance temperature sensor, the humidity sensor is a humidity - sensitive capacitance sensor, and the conversion circuit connection wire is a USB - to - RS - 485 conversion wire of model UT - 890A.

6. The numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, wherein Three wind speed sensors are installed on the center line of the sand table parallel to the long side of the sand table by means of flange installation. Two of the wind speed sensors are installed 300mm away from the edge of the sand table; the lower part of the sensor is fixed on a flange plate with a diameter of 65mm through threaded flange connection, and 4 installation holes with a diameter of 5mm are opened on the circumference with a diameter of 48mm, and it is fixed on the sand table with bolts; the average value of 3 wind speed sensors is taken for analysis.

7. A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, characterized in that, The wind speed sensor adopts an NHFS45 - type three - cup wind speed sensor, the displacement sensor adopts a CD22 - type laser displacement sensor, and the high - definition camera adopts a full - color night - vision camera of model TL - IPC642 - A4.

8. A numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, characterized in that, On each circumference with a radius of 100mm centered on the center of the sand table physical model, 4 displacement sensors are fixedly installed at equal intervals through sensor brackets.

9. A numerical simulation sand table system for infrastructure intelligent management and control based on mechanical drive according to claim 1, characterized in that, On each part of the sand table physical model in the vertical direction, a strain gauge is installed every 50mm.

10. The numerical simulation sand table system for infrastructure intelligent control based on mechanical drive according to claim 1, characterized in that, The regular pyramid - shaped cone prism is made of a phantom imaging film and semi - transparent glass. The size of the four sides of its bottom is equal to the size of the edge at the top surface of the four - side frame of the sand table, and the size of the four sides of its top is 0.194 times the size of the corresponding four sides of the bottom, and the height is 0.74 times the length of the bottom long side.

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