Historic building dynamic mechanics demonstration building block system and method
By integrating variable stiffness units and a magnetic connection system into the building block model and combining it with AR feedback technology, the problem that existing technologies cannot simulate the dynamic mechanical behavior of buildings is solved, dual tactile and visual feedback is achieved, and the user's understanding of the mechanics of ancient buildings is enhanced.
Patent Information
- Application Number
- CN202510879415.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-09-26
AI Technical Summary
In the existing technology, static building block models cannot simulate the dynamic mechanical behavior of real building structures under stress, lack tactile feedback, making it difficult for users to intuitively understand the flexural deformation and stress distribution of the structure. The AR interaction method is not closely connected with the physical model, and lacks a multi-dimensional immersive learning experience. It is difficult to meet the needs of dynamic mechanical demonstrations, especially in ancient architecture education and STEM education.
The variable stiffness building block units are embedded with micro hydraulic dampers and strain sensors, combined with a magnetic mortise and tenon connection system and a dual-channel feedback system. By adjusting the building block rigidity and displacement monitoring, combined with the AR interface's real-time feedback of stress distribution and vibration simulation, dual tactile and visual feedback is achieved to enhance the sense of immersion.
It realizes the dynamic simulation of ancient architectural structures under stress, provides dual tactile and visual feedback, enhances the user's sense of immersion and the depth of understanding of mechanical principles, and meets the needs of dynamic mechanics demonstration in ancient architectural education and STEM education.
Smart Images
Figure CN120708487A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of architectural model assembly and educational technology, and in particular to a building block system and method for demonstrating the dynamic mechanics of ancient buildings. Background Art
[0002] With the development of cultural heritage and STEM education, the demand for interactive tools that can intuitively display the mechanical properties of building structures is growing. In existing technologies, traditional building block models mainly reproduce the exterior structure of a building through the physical splicing of fixed rigidity materials. Although such static models can restore the exterior of the building, it is difficult to dynamically present the mechanical response of the structure when it is subjected to stress, and it is impossible for users to intuitively feel the mechanical principles of the building structure. At the same time, some technologies attempt to introduce AR technology to enhance the virtual display effect, but such solutions generally lack effective linkage with physical models. Users can only obtain information through vision and lack multi-dimensional experiences such as tactile feedback, resulting in insufficient depth and immersion in knowledge transmission. Especially in ancient architecture education, architectural mechanics teaching and STEM education scenarios, it is difficult to meet the needs of transforming abstract mechanical theories into concrete practical experiences.
[0003] The main problems with existing technologies are as follows: First, static model building blocks cannot simulate the dynamic mechanical behavior of real building structures under stress, making it difficult for users to intuitively understand the structure's mechanical properties, such as flexural deformation and stress distribution, by manipulating the model; second, the AR interaction method is not closely linked to the physical model, the experience is single, and there is a lack of tactile feedback, making it impossible to build an immersive learning environment with multi-sensory collaboration; third, in educational scenarios, students' understanding of structural mechanics often remains at the abstract theoretical level, lacking touchable and observable interactive carriers to assist in knowledge absorption. These limitations make existing technologies significantly insufficient in the intuitive and interactive dissemination of architectural mechanics knowledge, making it difficult to fully meet the actual needs of dynamic mechanics demonstration tools in education and cultural heritage activities. To this end, we propose a system and method for demonstrating the dynamic mechanics of ancient buildings. Summary of the Invention
[0004] The purpose of this application is to provide a building block system and method for demonstrating the dynamic mechanics of ancient buildings.
[0005] In the first aspect, the ancient building dynamic mechanics demonstration building block system provided by this application adopts the following technical solutions: The ancient building dynamic mechanics demonstration building block system includes: variable stiffness building block units, magnetic mortise and tenon connection system and dual-channel feedback system; The variable stiffness building block unit has a built-in micro hydraulic damper that changes the module stiffness by adjusting the piston pressure. The built-in strain sensor is used to transmit the module stress and deformation data to the AR interface in real time. The magnetic mortise and tenon joint system includes an annular neodymium magnet array arranged on the connection surface of the standardized module to ensure self-alignment and controllable displacement during assembly, and also includes a Hall sensor for detecting displacement; The dual-channel feedback system combines low-frequency vibration with AR visualization, including a vibration device within the hydraulic module, which emits low-frequency vibrations to simulate building shaking when the building block group reaches a critical load-bearing state, and an AR interface that displays stress concentration areas based on data collected by strain sensors and Hall sensors.
[0006] Preferably, the variable stiffness building block unit standardized beam-column module has an integrated micro hydraulic damper. When the user presses the roof part, the module can dynamically simulate the flexural deformation of the real building. Its built-in strain sensor transmits data to the AR interface in real time, showing the real stress distribution. By adjusting the piston pressure, the module can work in different rigidity states and simulate building components with different materials or structural states.
[0007] Preferably, the magnetic mortise and tenon connection system arranges an annular neodymium magnet array on the connection surface of the standardized module; The magnetic field distribution of the array is used to ensure self-alignment during assembly and allow displacement after torque. The Hall sensor is set at the module connection to detect the displacement in real time and transmit the detected displacement signal to the control system. The control system triggers the structural safety warning animation in AR based on the signal, and performs real-time monitoring and feedback on the safety of the assembled structure.
[0008] Preferably, the tactile feedback mechanism of the dual-channel feedback system is: When the preset load conditions are reached, the system automatically activates the vibration device in the hydraulic module to generate low-frequency vibration. The vibration frequency and amplitude are set according to the actual shaking characteristics of the building when it is under stress, simulating the real shaking feeling of the building when it is under stress, allowing users to intuitively feel the mechanical changes of the structure through touch.
[0009] Preferably, the visual feedback mechanism of the dual-channel feedback system is: The AR interface updates and displays the stress distribution map in real time based on the data collected by the strain sensor and Hall sensor, and uses a color gradient effect to highlight the stress concentration area. The color range of the color gradient is associated with the magnitude and direction of the stress.
[0010] Preferably, it also includes a data fusion algorithm module: The data fusion algorithm module processes multi-source data in real time. The multi-source signals include real-time data from strain sensors and Hall sensors, and uses Kalman filtering to reduce data noise. The fusion processing of multi-source data reflects the actual stress and deformation of the building block system.
[0011] Preferably, based on the data processed by the data fusion algorithm, the AR visualization effect is upgraded and the model details in the AR interface are dynamically adjusted. The model details include but are not limited to: real-time display of the deflection angle and stress change trend.
[0012] Secondly, the ancient building dynamic mechanics demonstration building block method provided by this application adopts the following technical solutions: The building block method for demonstrating the dynamic mechanics of ancient buildings includes the following steps: Users can change the rigidity of the modules by adjusting the piston pressure of the variable rigidity building block unit, and assemble the standardized modules through the magnetic mortise and tenon connection system; The annular neodymium magnet array achieves self-alignment during assembly. When external force is applied to the building block system during or after assembly, the variable stiffness building block units are subjected to the force and flexural deformation. The strain sensor transmits deformation data to the AR interface in real time, and the Hall sensor detects the displacement of the magnetic mortise and tenon connection system and transmits it to the AR interface; When the building block group reaches the critical load-bearing state, the vibration device in the hydraulic module emits low-frequency vibration. At the same time, the AR interface displays the stress concentration area based on the received data, forming dual tactile and visual feedback.
[0013] Preferably, when adjusting the piston pressure of the variable stiffness building block unit, different stiffness adjustment ranges are selected according to different demonstration requirements, including simulating the structural stiffness of ancient buildings in different ages or under different maintenance conditions, and observing the different dynamic mechanical responses of the building block system when subjected to stress by changing the module stiffness.
[0014] Preferably, when the stress concentration area is displayed on the AR interface, the stress concentration area is enlarged and rotated according to the user's interactive operation, and the AR interface provides relevant mechanical knowledge explanations and data descriptions to assist users in understanding the principles of structural mechanics.
[0015] In summary, this application includes at least one of the following beneficial technical effects: Through variable stiffness building block units, the present invention can simulate the mechanical response of ancient buildings under different materials or structural states, allowing users to intuitively feel the flexural deformation and stress distribution of the building. The magnetic mortise and tenon connection system ensures self-alignment of assembly and monitors displacement in real time to provide structural safety early warning. The dual-channel feedback system combines low-frequency vibration and AR visualization. When the building block group reaches the critical load-bearing state, the system emits low-frequency vibration to simulate building shaking. At the same time, the AR interface displays the stress concentration area, forming dual tactile and visual feedback, enhancing user immersion. The data fusion algorithm module reduces data noise, improves AR visualization effects, and dynamically adjusts model details to assist users in deeply understanding the principles of structural mechanics. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a system module framework diagram of the present invention; Figure 2 It is a flow chart of the method of the present invention. DETAILED DESCRIPTION
[0017] The following is combined with Figure 1 -Attached Figure 2 , further details of this application are given.
[0018] Example 1: Ancient Architecture Dynamic Mechanics Demonstration Building Block System, refer to Figure 1 As shown, it includes: variable stiffness building block units, magnetic mortise and tenon connection system and dual-channel feedback system; The variable stiffness building block unit has an embedded micro hydraulic damper, which changes the module stiffness by adjusting the piston pressure. The built-in strain sensor is used to transmit the module stress and deformation data to the AR interface in real time. The variable stiffness building block unit has a standardized beam-column module with an integrated micro hydraulic damper. When the user presses the roof part, the module can dynamically simulate the flexural deformation of the real building. Its built-in strain sensor transmits the data to the AR interface in real time, showing the real stress distribution. By adjusting the piston pressure, the module can work in different stiffness states and simulate building components with different materials or structural states.
[0019] The working mechanism of the micro hydraulic damper is as follows: the standardized beam-column module integrated within the unit adopts a dual-chamber hydraulic damping structure, including a piston cylinder, an elastic return spring, and a pressure regulating valve. When the user presses on the roof, the piston produces axial displacement in the cylinder. The damping force is calculated as follows: Among them, F d is the damping force, C d is the damping coefficient (take 0.85), A is the effective area of the piston (15mm 2 ), ΔP is the pressure difference between the two chambers, ρ is the density of the hydraulic oil (850kg / m 3 By adjusting the pressure regulating valve (accuracy ±0.1MPa), the module rigidity can be continuously adjusted within the range of 0.5-5N / mm, simulating the mechanical properties of different materials such as wood (1.2N / mm) and stone (4.5N / mm).
[0020] Strain sensing and data transmission utilizes a MEMS piezoresistive strain sensor (range ±1500 με, accuracy ±0.1% FS) integrated into the beam-column neutral plane using a Wheatstone bridge configuration. The sensor output signal is converted by a 24-bit ADC and transmitted in real time to the AR terminal via Bluetooth 5.2 (transmission rate 2 Mbps, latency <10 ms). The data acquisition frequency is set at 100 Hz to meet the high-frequency response requirements of dynamic deformation processes.
[0021] The magnetic mortise and tenon connection system includes an annular neodymium magnet array arranged on the connection surface of the standardized module to ensure self-alignment and controllable displacement during assembly, and also includes a Hall sensor for detecting displacement. The magnetic mortise and tenon connection system arranges an annular neodymium magnet array on the connection surface of the standardized module. The magnetic field distribution of the array is used to ensure self-alignment during assembly and allow displacement after torque. The Hall sensor is set at the module connection position to detect the displacement in real time and transmit the detected displacement signal to the control system. The control system triggers the structural safety warning animation in the AR according to the signal, and monitors and provides feedback on the safety of the assembled structure in real time.
[0022] The technical solution of the magnetic mortise and tenon connection system is: The self-aligning magnetic array design uses six groups of annular neodymium magnets (N52 brand, remanence 1.43T) arranged on the connection surface in a Halbach array. The magnetic field distribution meets the following requirements: Where B(r,θ) is the magnetic field strength at any point (r,θ) in the magnetic array in polar coordinates, B0 is the central magnetic induction intensity (0.3T), r is the radial distance between the target point and the center of the magnetic array, r0 is the array radius (8mm), θ is the distance between the target point and the magnetic array reference axis, and n is the harmonic order. This distribution enables the module to self-align within an angular deviation of ±15°. The docking force threshold is set at 5N·m, allowing a controllable displacement of 0-3mm around the axis after assembly.
[0023] The displacement monitoring and safety warning Hall sensor (SS495A, resolution 0.1mT) is vertically installed 2mm below the magnet array. The relationship between displacement and Hall voltage is: V H =K H ·B(x)·I Among them, V H is the Hall voltage, K H is the sensitivity coefficient of the Hall element, sensitivity K H =1.3mV / (mT·mA), B(x) is the magnetic field strength related to the displacement x, I is the excitation current of the Hall element, and the excitation current I=5mA. When the displacement rate is detected to be greater than 2mm / s or the cumulative displacement is greater than 5mm, the system triggers an AR warning: the red flashing area marks the risk of connection failure, and a 3kHz warning tone is emitted through the buzzer.
[0024] The dual-channel feedback system combines low-frequency vibration with AR visualization, including a vibration device within the hydraulic module and an AR interface. The vibration device emits low-frequency vibrations when the building block group reaches a critical load-bearing state to simulate building shaking. The AR interface displays stress concentration areas based on data collected by strain sensors and Hall sensors. The dual-channel feedback system's tactile feedback mechanism is as follows: when the preset load conditions are reached, the system automatically activates the vibration device within the hydraulic module to generate low-frequency vibrations. The vibration frequency and amplitude are set according to the shaking characteristics of the actual building under stress, simulating the actual shaking feeling of the building under stress, allowing users to intuitively feel the mechanical changes of the structure through touch. The dual-channel feedback system's visual feedback mechanism is as follows: the AR interface updates the stress distribution map in real time based on data collected by the strain sensors and Hall sensors, using a color gradient effect to highlight stress concentration areas. The color range of the color gradient is associated with the magnitude and direction of the stress.
[0025] In the dual-channel feedback system, tactile feedback is achieved through the eccentric motor. When the module stiffness drops to 70% of the initial value, the motor Output 1-5Hz low-frequency vibration, where f is the vibration frequency, k is the stiffness, and m is the mass. The amplitude is positively correlated with the stress gradient. The visual feedback is based on the Unity engine. After receiving the strain data, the stress distribution diagram is generated using the principal stress calculation formula. The expression is: Where σ 1,2 is the principal stress value, E is the elastic modulus, v is the Poisson's ratio, ε xx ,ε yy is the positive strain in the x and y directions, and the tensile / compressive deformation of the building block module is collected in real time through the strain sensor. is the shear strain in the xy plane, describing the shear deformation of the module in the xy plane (angle change of the microelement); HSV color space mapping is used to overlay a semi-transparent mesh display with flexure deformation.
[0026] It also includes a data fusion algorithm module: the data fusion algorithm module processes multi-source data in real time. The multi-source signals include: real-time data from strain sensors and Hall sensors, using Kalman filtering to reduce data noise; the fusion processing of multi-source data reflects the actual force and deformation of the building block system. Based on the data processed by the data fusion algorithm, the AR visualization effect is upgraded and the model details in the AR interface are dynamically adjusted. The model details include but are not limited to: real-time display of deflection angle and stress change trend. The data fusion algorithm module uses Kalman filtering to process multi-source signals, and Kalman filtering is used to establish a state space model: Its state equation is: k =Fx k-1+Bu k +w k , where x k is the state vector of the system at the kth moment, F is the state transfer matrix, Fx k-1 To describe the natural transition of the state from time k-1 to time k when there is no input and noise, B is the input matrix, u k is the input vector, w k is the process noise; The measurement equation is: k =Hx k +v k , where z k is the measurement vector, H is the observation matrix, v k To measure noise; Among them, the state vector Where x is the state vector, process noise w~N(0,Q), measurement noise v~N(0,R), ε is the strain, is the strain rate, Δx is the displacement change, is the displacement change rate, .
[0027] The gain matrix is updated iteratively through the state equation and measurement equation: K k =P k|k-1 H T (HP k|k-1 H T +R) -1 Where K k is the Kalman gain matrix, P k|k-1 is the prediction error covariance matrix, H is the observation matrix, H T is the transpose of the observation matrix, and R is the measurement noise covariance matrix.
[0028] Reduce strain noise variance to 0.002με 2 The fusion process includes IEEE 1588 protocol clock synchronization, FFT feature extraction, and DS evidence theory decision-making, implementing a three-level early warning mechanism. The system utilizes an ABS engineering plastic housing and is EMC-certified. It boasts a mortise and tenon joint accuracy of ±0.2mm, a stiffness response of <200ms, and an AR latency of <50ms, meeting electronic and electrical product testing standards and providing an interactive teaching platform for demonstrations of ancient architectural mechanics.
[0029] Example 2: Ancient building dynamic mechanics demonstration building block method, refer to Figure 2 As shown, the following steps are included: The user changes the module rigidity by adjusting the piston pressure of the variable stiffness building block unit. Specifically, the hydraulic system is used to control the piston pressure. The pressure change directly affects the rigidity of the internal support structure (such as the stiffness of the spring or hydraulic medium), realizing the continuous adjustment of the module rigidity. The standardized module adopts magnetic mortise and tenon connection, combining the mechanical stability of traditional mortise and tenon with the self-alignment characteristics of magnets to ensure fast positioning and stable connection during assembly, simulating the occlusal relationship of ancient building components. When adjusting the piston pressure, the pressure range is set according to the demonstration requirements (such as the state of buildings in different ages: aging structures have low rigidity, and after maintenance, they have high rigidity). The pressure sensor feedback is used for real-time adjustment to match the module rigidity with the target state. When subjected to force, the module with low rigidity has more significant flexural deformation, and the vibration response (such as amplitude and frequency) is contrasted with the module with high rigidity, which intuitively presents the influence of structural rigidity on dynamic mechanical behavior.
[0030] A ring-shaped neodymium magnet array achieves self-alignment based on magnetic field gradients. The magnet arrays of adjacent modules interact through magnetic fields (e.g., the directional magnetic field distribution of a Halbach array) to automatically correct positional deviations during assembly, simulating the natural alignment accuracy of ancient architectural components. When external force is applied, strain sensors (high-precision resistance strain gauges) in the variable-stiffness building blocks collect deformation data in real time, while Hall effect sensors detect the displacement of the magnetic mortise and tenon joints. Both data are synchronously transmitted to the AR interface. When the building block assembly approaches critical load (determined by fusion of strain and pressure sensor data, such as stress reaching 90% of the material allowable value), a vibration device within the hydraulic module initiates low-frequency vibrations, matching the natural frequency of the building block system to simulate the violent shaking associated with structural resonance. Tactile feedback is directly delivered through the vibration device. Based on the strain data, the AR interface calculates the stress distribution using the principal stress formula and renders stress concentration areas with a color gradient (e.g., a red-blue heat map) for visual feedback.
[0031] When the AR interface processes data, Kalman filtering is used to optimize sensor signals to ensure the accuracy of stress calculations. In terms of user interaction, the AR interface is operated through gesture recognition (such as pinching to zoom, rotating gestures) to view the stress concentration area in detail. The built-in mechanical knowledge base of the interface calls pre-stored ancient architectural mechanics cases (such as the stress dispersion principle of brackets and the bending deformation characteristics of beams and columns) according to the current stress state (such as bending stress and shear stress distribution), and explains them in the form of pictures, texts and animations to help users understand the application of structural mechanics in ancient buildings. For example, when the stress concentration at the end of the beam is displayed, the interface automatically associates the "influence of bending moment and shear force on the beam", displays the distribution law of bending moment diagrams and shear force diagrams, and explains the causes of stress concentration and the threat to structural safety.
[0032] The entire process forms a closed loop: assembly and adjustment → force and deformation → sensor data collection → AR processing and feedback → knowledge explanation. Through interaction, users gradually grasp the dynamic mechanical characteristics of ancient buildings. The system's hydraulic control of variable stiffness units, magnetic field self-alignment of magnetic mortise and tenon joints, sensor data filtering, AR interface visualization, and knowledge integration all underpin the scientific and interactive nature of the demonstration. Abstract mechanical principles are intuitively presented through block manipulation, sensor feedback, and AR visualization, deepening users' understanding of the structural mechanics of ancient buildings.
[0033] In summary, the advantages of the present invention are: Through multi-module collaborative design and technology integration, this invention provides a highly integrated and interactive innovation platform for the demonstration of ancient architectural mechanics. The variable stiffness building block unit is embedded with a micro-hydraulic damper and a strain sensor. By adjusting the piston pressure, the module rigidity can be continuously changed within the range of 0.5-5N / mm, accurately simulating the mechanical properties of different materials such as wood and stone. At the same time, deformation data is collected in real time and transmitted to the AR interface, dynamically displaying the stress distribution, and transforming abstract mechanical principles into a visual interactive experience. The magnetic mortise and tenon connection system uses an annular neodymium magnet arranged in a Halbach array to achieve self-alignment within an angular deviation of ±15°. The docking force threshold is set to 5N·m and allows a controllable displacement of 0-3mm. It retains the mechanical stability of traditional mortise and tenon joints and monitors the displacement in real time through a Hall sensor. When the displacement rate is greater than 2mm / s or the cumulative displacement is greater than 5mm, an AR warning and buzzer alarm are triggered, realizing dynamic monitoring of structural safety and taking into account both assembly convenience and connection reliability.
[0034] The dual-channel feedback system innovatively integrates tactile and visual feedback. The tactile feedback is generated by the eccentric motor, which outputs a 1-5Hz low-frequency vibration when the module stiffness drops to 70% of its initial value, simulating the shaking of the building under stress. The visual feedback is based on the Unity engine and the principal stress calculation formula, using HSV color space mapping and semi-transparent grid overlay to display the stress distribution. Combined with the Kalman filter in the data fusion algorithm to reduce the noise of multi-source signals, the strain noise variance is reduced to 0.002με. 2 , to ensure the accuracy of feedback data. The system also built a closed-loop interactive process of "assembly and adjustment-stress deformation-sensor acquisition-AR processing feedback-knowledge explanation". The built-in mechanical knowledge base can call ancient architectural mechanics cases according to the stress state, and assist teaching in the form of pictures, texts, and animations to enhance the user's understanding of the principles of structural mechanics. In addition, the system uses ABS engineering plastic shell and has passed EMC certification. The mortise and tenon connection accuracy is ±0.2mm, the stiffness response is <200ms, and the AR delay is <50ms. It meets the testing standards for electronic and electrical products, and has both safety, reliability and efficient real-time response capabilities. It provides a scientific, intuitive and immersive interactive teaching platform for ancient architectural mechanics education.
[0035] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.
Claims
1. The ancient building dynamic mechanics demonstration building block system is characterized by: include: Variable stiffness building block units, magnetic mortise and tenon connection system and dual-channel feedback system; The variable stiffness building block unit has a built-in micro hydraulic damper that changes the module stiffness by adjusting the piston pressure. The built-in strain sensor is used to transmit the module stress and deformation data to the AR interface in real time. The magnetic mortise and tenon joint system includes an annular neodymium magnet array arranged on the connection surface of the standardized module to ensure self-alignment and controllable displacement during assembly, and also includes a Hall sensor for detecting displacement; The dual-channel feedback system combines low-frequency vibration with AR visualization, including a vibration device within the hydraulic module, which emits low-frequency vibrations to simulate building shaking when the building block group reaches a critical load-bearing state, and an AR interface that displays stress concentration areas based on data collected by strain sensors and Hall sensors.
2. The ancient building dynamic mechanics demonstration building block system according to claim 1 is characterized in that: The variable stiffness building block unit standardized beam-column module has an integrated micro hydraulic damper. When the user presses the roof part, the module can dynamically simulate the flexural deformation of a real building. Its built-in strain sensor transmits data to the AR interface in real time, showing the real stress distribution. By adjusting the piston pressure, the module can work in different rigidity states and simulate building components with different materials or structural states.
3. The ancient building dynamic mechanics demonstration building block system according to claim 1 is characterized in that: The magnetic mortise and tenon connection system arranges an annular neodymium magnet array on the connection surface of the standardized module; The magnetic field distribution of the array is used to ensure self-alignment during assembly and allow displacement after torque. The Hall sensor is set at the module connection to detect the displacement in real time and transmit the detected displacement signal to the control system. The control system triggers the structural safety warning animation in AR based on the signal, and performs real-time monitoring and feedback on the safety of the assembled structure.
4. The ancient building dynamic mechanics demonstration building block system according to claim 1, characterized in that: The tactile feedback mechanism of the dual-channel feedback system is: When the preset load conditions are reached, the system automatically activates the vibration device in the hydraulic module to generate low-frequency vibration. The vibration frequency and amplitude are set according to the actual shaking characteristics of the building when it is under stress, simulating the real shaking feeling of the building when it is under stress, allowing users to intuitively feel the mechanical changes of the structure through touch.
5. The ancient building dynamic mechanics demonstration building block system according to claim 1, characterized in that: The visual feedback mechanism of the dual-channel feedback system is: The AR interface updates and displays the stress distribution map in real time based on the data collected by the strain sensor and Hall sensor, and uses a color gradient effect to highlight the stress concentration area. The color range of the color gradient is associated with the magnitude and direction of the stress.
6. The ancient building dynamic mechanics demonstration building block system according to claim 1, characterized in that: Also includes data fusion algorithm module: The data fusion algorithm module processes multi-source data in real time. The multi-source signals include real-time data from strain sensors and Hall sensors, and uses Kalman filtering to reduce data noise. The fusion processing of multi-source data reflects the actual stress and deformation of the building block system.
7. The ancient building dynamic mechanics demonstration building block system according to claim 6, characterized in that: Based on the data processed by the data fusion algorithm, the AR visualization effect is upgraded and the model details in the AR interface are dynamically adjusted. The model details include but are not limited to: real-time display of deflection angle and stress change trend.
8. The building block method for demonstrating the dynamic mechanics of ancient buildings is characterized by: The following steps are involved: Users can change the rigidity of the modules by adjusting the piston pressure of the variable rigidity building block unit, and assemble the standardized modules through the magnetic mortise and tenon connection system; The annular neodymium magnet array achieves self-alignment during assembly. When external force is applied to the building block system during or after assembly, the variable stiffness building block units are subjected to the force and flexural deformation. The strain sensor transmits deformation data to the AR interface in real time, and the Hall sensor detects the displacement of the magnetic mortise and tenon connection system and transmits it to the AR interface; When the building block group reaches the critical load-bearing state, the vibration device in the hydraulic module emits low-frequency vibration. At the same time, the AR interface displays the stress concentration area based on the received data, forming dual tactile and visual feedback.
9. The ancient building dynamic mechanics demonstration building block method according to claim 8, characterized in that: When adjusting the piston pressure of the variable stiffness building block unit, different stiffness adjustment ranges are selected according to different demonstration requirements, including simulating the structural stiffness of ancient buildings in different ages or under different maintenance conditions. By changing the module stiffness, the different dynamic mechanical responses of the building block system under stress are observed.
10. The ancient building dynamic mechanics demonstration building block method according to claim 8, characterized in that: When the stress concentration area is displayed on the AR interface, the stress concentration area is enlarged and rotated according to the user's interactive operation. The AR interface provides relevant mechanical knowledge explanations and data descriptions to help users understand the principles of structural mechanics.