CN-122022722-A - Collaborative urban and rural planning interactive system based on digital twin and public participation

CN122022722ACN 122022722 ACN122022722 ACN 122022722ACN-122022722-A

Abstract

The application relates to the technical field of urban and rural planning and digital twinning, in particular to a collaborative urban and rural planning interactive system based on digital twinning and public participation, which comprises a digital twinning base construction, public opinion structured acquisition, a multi-main body collaborative simulation engine, a consensus evolution optimization, a dynamic feedback display and data security and authority management module. The system merges multi-source data to construct an editable three-dimensional model, converts public non-professional opinions into a structured instruction, links simulation evaluation and multi-objective optimization, realizes collaborative generation and dynamic display of a planning scheme, and ensures data security and role authority control. The application can effectively improve the depth of public participation and the scientificity of planning decisions.

Inventors

SHEN YUZHE
REN SHENGNAN
FAN ZIMING
YAO JIAHUI
ZHANG RUIBO

Assignees

河南城建学院

Dates

Publication Date: 20260512
Application Date: 20260126

Claims (10)

1. The collaborative urban and rural planning interactive system based on digital twinning and public participation is characterized by comprising a digital twinning base construction module, a three-dimensional editable urban and rural space digital model is constructed by fusing remote sensing images, laser radar point clouds, population thermodynamic diagrams and traffic flow data, and attribute labeling is carried out on buildings, roads, greenbelts and public facilities through semantic tags; the remote sensing image is acquired through a high-resolution seventh satellite, a laser radar point cloud is acquired through an airborne LiDAR device, a population thermodynamic diagram is derived from mobile signaling data, traffic flow data is derived from geomagnetic coils and video recognition equipment, a public opinion structured acquisition module is deployed at a Web end and a mobile end, a dragging type planning element tool set and a voice rotor text interface are provided, space layout modification suggestions submitted by a user are received, unstructured input is converted into structured planning operation instructions with geographic coordinates, the structured planning operation instructions comprise newly increased green land coordinates, adjusted road trend control points, deleted building block IDs and modified volume ratio values, a multi-subject collaborative simulation engine module injects the structured planning operation instructions into a digital twin base, a traffic simulation sub-model, a solar analysis sub-model and a carbon emission evaluation sub-model are invoked to conduct multidimensional influence deduction to generate a quantized evaluation result, the traffic simulation sub-model is constructed by adopting a SUMO platform, the solar analysis sub-model is developed based on Radiance engines, the carbon emission evaluation sub-model is built according to a C building carbon nuclear method, a common-optimization NSIII target optimization algorithm is adopted, a global optimization target GA-optimization algorithm is set up by the expert optimization algorithm is used as a constraint optimization algorithm, the dynamic feedback display module is used for displaying the candidate scheme set in a three-dimensional digital twin scene in a time axis mode, supporting the user to switch different schemes and check corresponding traffic delay indexes, people's green area and carbon row intensity change curves through clicking, and the data security and authority management module is used for distributing different model editing authorities to residents, planners and government administrators by adopting a role-based access control strategy and carrying out end-to-end encryption storage on original opinion data submitted by the user by using a national secret SM4 algorithm.
2. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 1, wherein the digital twinning base construction module is used for fusing remote sensing images, laser radar point clouds, population thermodynamic diagrams and traffic flow data to construct a three-dimensional editable urban and rural space digital model, and labeling the attributes of buildings, roads, greenbelts and public facilities through semantic tags, and comprises the following steps of carrying out ICP registration on a high-resolution seventh satellite image and an onboard LiDAR point cloud after orthographic correction to generate a DSM digital surface model; the method comprises the steps of performing cloth simulation filtering on DSM to separate ground points and non-ground points, obtaining a DEM digital elevation model through ground point interpolation, obtaining a CHM canopy height model through subtraction of the DSM and the DEM, training a random forest classifier by combining image spectrum characteristics, identifying building, roads and vegetation areas, aggregating mobile signaling data according to 500 m grids to generate population density grids, superposing the population density grids on the building areas and associating building IDs, obtaining intersection hour-level traffic flow from geomagnetic coils and video identification equipment, generating a continuous traffic flow field through Kriging interpolation, loading the DEM in a Unity3D engine to serve as a terrain base, stretching the classified building areas into three-dimensional blocks with textures, generating linear entities with lane number attributes in the road areas, endowing coloring parameters corresponding to NDVI values in the green areas, adding JSON format semantic tags for each three-dimensional entity, and including type, area, volume ratio, belonging administrative areas and update time stamp fields.
3. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 1, wherein the public opinion structured acquisition module is deployed at a Web end and a mobile end, provides a drag type planning element tool set and a voice conversion text interface, receives a spatial layout modification suggestion submitted by a user, and converts unstructured input into a structured planning operation instruction with geographic coordinates, and comprises the steps of integrating CesiumJS three-dimensional earth controls at a Web front end, loading a digital twinning base model and binding a mouse event monitor, activating a polygon drawing tool after a user clicks a 'new green land', recording vertex longitude and latitude coordinates sequentially clicked by the user in a three-dimensional scene, starting a browser Web SPEECH API when the user presses a microphone icon, converting voice content into text and then sending the text into a pre-trained BERT classification model, outputting operation type labels and parameter slots by the BERT classification model, analyzing results into { operation types: deletion, object IDs: BLDG _2037}, calculating minimum rectangular center coordinates for drag generated graphic elements, storing the graphic elements, and storing the touch down map parameters by combining the touch down type with a map storage unit 37tie-up the corresponding to the graphic operation type map format, and storing the touch down type map information.
4. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 1 is characterized in that the multi-main collaborative simulation engine module injects a structured planning operation instruction into a digital twinning base, invokes a traffic simulation sub-model, a solar analysis sub-model and a carbon emission assessment sub-model to conduct multi-dimensional influence deduction, and generates a quantitative assessment result, wherein the multi-main collaborative simulation engine module comprises the steps of analyzing an operation type in the GeoJSON instruction, instantiating a prefabricated body with corresponding volume in a Unity3D scene and updating a semantic label if the operation type is newly added building, exporting an updated three-dimensional model into a OpenDRIVE-format road network and a CityGML-format building model, importing OpenDRIVE files into a SUMO platform, configuring a vehicle travel demand matrix, running microscopic traffic simulation, outputting average travel time of each road section, converting the CityGML model into Radiance-model, setting a solar position of 8760 hours in the whole year, calculating the accumulated solar time number of each building elevation, calculating a normalized solar energy amount of the building elevation, and obtaining a three-dimensional increment ratio, and a three-dimensional increment impact weight and a total energy consumption index according to the building mechanical energy consumption coefficient.
5. The collaborative urban and rural planning interactive system based on digital twinning and public participation, which is characterized in that the collaborative evolution optimization module adopts an improved NSGA-III multi-objective optimization algorithm, takes constraint conditions set by experts and preference weights submitted by the public as optimization boundaries, performs pareto front search on planning schemes, and outputs a candidate scheme set meeting multi-subject appeal, and comprises the following steps of randomly generating 100 planning schemes in a feasible solution space when a population is initialized, wherein each scheme is encoded into a building layout matrix and a road topology vector, defining an objective function as f1=total delay time of traffic, f2=number of substandard solar cells and f3=total emission amount of construction carbon, constructing a reference vector according to weights w1, w2 and w3 set by a user sliding bar, dividing the objective space into a plurality of subareas, selecting individuals closest to the reference vector for each subarea after non-dominant sorting, introducing an operator to mutate the elite individuals, and outputting the front optimization scheme 10 when the current iteration reaches 200 generations or continuous pareto front edge is not reached; The building layout matrix is an N multiplied by M dimensional matrix, element values represent whether the land is built or not and the volume rate grade, and the road topology vector adopts an adjacency list form to record the connection relation of the intersection and the number of lanes.
6. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 1, wherein the dynamic feedback display module displays a candidate scheme set in a three-dimensional digital twinning scene in a time axis form, supports a user to switch different schemes and check corresponding traffic delay indexes, people's green areas and carbon emission intensity change curves by clicking, and comprises the following steps of creating 10 key frames on a CesiumJS time axis control, binding a model state snapshot of one candidate scheme for each key frame, unloading a current three-dimensional model and loading CityGML data of the kth scheme when the user drags a time axis sliding block to the kth frame, synchronously updating a right ECharts chart, displaying a histogram of three core indexes under the scheme and comparing a history reference value, allowing the user to hook a plurality of schemes for side-by-side comparison, and dividing the three-dimensional scene into multiple view ports to synchronously render different schemes; the multi-viewport layout is in a2×2 or 1×3 split form.
7. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 1, wherein the data security and authority management module adopts a role-based access control strategy to allocate different model editing authorities to residents, planners and government administrators, and uses a national secret SM4 algorithm to carry out end-to-end encryption storage on original opinion data submitted by users, the method comprises the steps of verifying user digital certificates when the system logs in, determining role types according to certificate OU fields, ensuring that resident roles can only submit opinions but can not directly modify models, planning roles can edit building attributes but can not adjust road red lines, government administrators have full authorities, geoJSON data submitted by users are encrypted in a front-end call SM4-JS library, the keys are distributed by a server through RSA-OAEP protocols, the encrypted data are stored in a MongoDB set, the set document contains encrypted_Payload fields and user role values, the operator roles, time stamps and verification values before and after each time of model change are recorded, the users comprise hash resident, planner and hash types and three types correspond to the residents and the government administrators.
8. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 2, wherein the DEM digital elevation model has a resolution of 1 meter.
9. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 3, wherein the geometry field in GeoJSON format adopts Point, lineString or polygonal Polygon type under WGS84 coordinate system.
10. The collaborative urban and rural planning interactive system based on digital twinning and public participation according to claim 4, wherein the sunlight analysis submodel calculates the accumulated sunlight hours of the south-facing facade of the residential building in the period from 9:00 to 15:00 winter and counts the number of households below the 2-hour standard.

Description

Collaborative urban and rural planning interactive system based on digital twin and public participation Technical Field The invention belongs to the technical field of urban and rural planning and smart cities, and particularly relates to a collaborative urban and rural planning interactive system based on digital twinning and public participation. Background With the deep application of the digital twin technology in the field of smart city and urban and rural planning, the construction of a high-precision and dynamically interactable urban and rural planning model by fusing multi-source data has become an important direction for improving planning scientificity and implementation efficiency. In recent years, partial researches try to combine remote sensing, laser radar and digital twin technology for terrain modeling, population distribution simulation and traffic network optimization, but obvious shortboards still exist in the aspects of public participation mechanism, real-time interaction feedback, collaborative decision support and the like. Especially under the treatment concept of 'co-construction co-treatment sharing', a collaborative interaction system which effectively integrates public opinion and a professional planning model is lacking, and the social adaptability and the implementation feasibility of urban and rural planning schemes are restricted. Through the search, a scene modeling method and a scene modeling system applied to urban and rural planning are disclosed, wherein the publication number of the scene modeling method is CN118211767B, and the authorized bulletin date is 2024, 8, 6. The patent proposes a technical scheme for constructing a digital elevation model based on remote sensing images and laser radar point cloud data, and evaluating urban and rural planning schemes by utilizing a digital twin model in combination with population data and traffic demand prediction. The method has certain advantages in the aspects of improving modeling precision and multi-element integration. However, the technical scheme is mainly focused on background data processing and professional model construction, does not relate to the design of a public participation mechanism, lacks a visual interaction interface and opinion acquisition function for non-professional users, cannot realize social feedback closed loop in the planning process, and is difficult to support the actual requirements of multi-element main body collaborative decision. The problems indicate that the current urban and rural planning digital twin system has obvious defects in the aspects of public participation mechanism, user interaction design and multi-main collaborative decision support. Therefore, the invention provides a coordinated urban and rural planning interactive system based on digital twinning and public participation, which aims to construct an interactive platform fusing a high-precision digital twinning base and an open public participation channel, support residents, experts and management departments to express appeal in real time in the same virtual space, influence a simulation scheme and cooperatively optimize planning decisions, and further improve transparency, inclusion and implementation efficiency of urban and rural planning. Disclosure of Invention The present invention has been made in view of the above-described problems occurring in the prior art. Therefore, the invention provides a collaborative urban and rural planning interaction system based on digital twinning and public participation, which solves the problems that the existing urban and rural planning digital twinning system lacks a structured opinion acquisition mechanism oriented to non-professional users, lacks the capability of real-time expression and proposal simulation linkage of multiple subjects in the same virtual space, and can not dynamically fuse public feedback to a professional planning model for collaborative optimization. In order to solve the technical problems, the invention provides a technical scheme that in the first aspect, the invention provides a collaborative urban and rural planning interactive system based on digital twinning and public participation, which comprises a digital twinning base construction module, a three-dimensional editable urban and rural space digital model, and attribute labeling of buildings, roads, greenbelts and public facilities through semantic tags, wherein the remote sensing image is acquired through a high molecular seventh satellite, the laser radar point cloud is acquired through airborne LiDAR equipment, the population thermodynamic diagram is derived from mobile signaling data, the traffic flow data is from geomagnetic coils and video recognition equipment, a public opinion structuring acquisition module is deployed at a Web end and a mobile end, provides a dragging type planning element tool set and a voice rotor text interface, receives spatial layout modification suggestion submit