Land space planning data information interaction method and mobile terminal

Abstract

The invention discloses a territorial space planning data interaction method, which comprises the following steps: collecting field geographic information data through a mobile terminal, carrying out real-time data fusion in combination with an edge computing node, and generating an augmented reality space marking layer, and the invention further discloses a mobile terminal device and a data verification system. The invention relates to a multi-user collaborative editing method, a data security transmission method and a mobile terminal heat dissipation system, and discloses an end-edge-cloud three-stage processing architecture, and a Gaussian mixture model registration algorithm sinks to an edge node, so that the three-dimensional data fusion delay is reduced to be within 200ms from the second level; according to the invention, the hardware coupling design of the expandable differential GPS and the multispectral camera is initiated, and the synchronization of centimeter-level positioning and sub-pixel-level image acquisition is realized; a time-space stamp service module is developed, quantum random number signature and improved PBFT consensus are combined, and 51% attack is defended while 200ms verification delay is kept.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of land space planning, and particularly relates to a land space planning data information interaction method and a mobile terminal. BACKGROUND

[0002] There are three technical bottlenecks in the current land space planning field: first, the data fusion precision is insufficient: the traditional GIS system uses a two-dimensional superposition method to process BIM and remote sensing data, resulting in a three-dimensional space registration error generally exceeding 1.2 pixels, which is difficult to meet the millimeter-level precision requirement of planning review; second, the field interaction efficiency is low: the existing mobile terminal relies on a centralized cloud platform to process data, and the average response delay is up to 3-5 seconds in field operation, and real-time AR labeling cannot be supported; third, the collaborative security mechanism is missing: the planning modification record is stored in a centralized database (such as the CN111400844A system), which has the risk of data tampering, and the existing blockchain scheme has a verification delay of more than 500 ms due to the native defects of the PBFT consensus mechanism. SUMMARY

[0003] The present application is based on the above problems, and proposes a land space planning data information interaction method and a mobile terminal to solve the above problems.

[0004] To solve the above technical problems, the technical solutions of the present application are as follows:

[0005] A land space planning data interaction method, comprising: collecting field geographic information data through a mobile terminal, combining an edge computing node to perform real-time data fusion, and generating an augmented reality space marking layer.

[0006] As a preferred embodiment of the present application, the data fusion comprises: performing three-dimensional registration of BIM model data and remote sensing image data through a Gaussian mixture model, and controlling the registration error within 0.3 pixel units.

[0007] The present application further discloses a mobile terminal device, which comprises a multi-spectral camera array, a LiDAR scanning module and a 5G communication module, and a deployable differential GPS antenna is integrated on the back of the device, with a positioning accuracy of centimeter level.

[0008] As a preferred embodiment of the present application, the touch screen surface is covered with a pressure sensing layer, supporting three-dimensional gesture operation recognition, and the pressure sensing resolution is not less than 4096 levels.

[0009] The present application further discloses a data verification system, which adopts alliance blockchain technology and comprises a space-time stamp service module, and stores planning modification records in a Merkle tree structure, each data block comprising a Beidou positioning time and a quantum random number signature.

[0010] As the preferred embodiment of the present application, the blockchain node is deployed on the national cloud platform, and the improved PBFT consensus mechanism is adopted, and the verification delay is not more than 200 ms.

[0011] The application further discloses a multi-user collaborative editing method, which is realized through a digital twin engine, supports at least 8 terminals to synchronously display a planning scheme, and adopts an adaptive streaming protocol, so that the bandwidth occupancy rate is reduced by 40%.

[0012] As the preferred embodiment of the present application, the conflict detection module adopts an R-tree spatial index algorithm, and the response time is less than 50 ms.

[0013] The application further discloses a data security transmission method, which adopts a national secret SM4 algorithm for encryption, and the dynamic generation of segmented keys, and the key fragments are automatically updated every 30 seconds.

[0014] On the basis, the application discloses a mobile terminal heat dissipation system, which comprises a graphene heat conduction layer and a micro eddy current fan, and can maintain 8 hours of continuous work under an environment temperature of 40 DEG C.

[0015] After the above technical improvement, the application has the following technical advantages:

[0016] 1. The application constructs a "end-edge-cloud" three-level processing architecture, and sinks a Gaussian mixture model registration algorithm to an edge node, so that three-dimensional data fusion delay is reduced from seconds to within 200 ms.

[0017] 2. The application initiates a hardware coupling design of an expandable differential GPS and a multispectral camera, and realizes the synchronization of centimeter-level positioning and sub-pixel-level image acquisition.

[0018] 3. The application develops a space-time stamp service module, combines quantum random number signature and improved PBFT consensus, and prevents 51% attack while maintaining 200 ms verification delay. DETAILED DESCRIPTION

[0019] Figure 1 Fig. 1 is a system overall architecture diagram of the application;

[0020] Figure 2 Fig. 4 is a PBFT consensus optimization timing diagram of the application;

[0021] Figure 3 Fig. 6 is a multi-user collaborative editing interface schematic diagram of the application; DETAILED DESCRIPTION

[0022] The application will be further described below in combination with specific embodiments.

[0023] In combination with Figure 1 and Figure 2It can be known that a kind of land space planning data interaction method, including: through mobile terminal, the real-time data fusion of combining edge computing node is carried out to the field geographic information data collected, and enhanced reality space mark layer is generated.

[0024] In the application, the preferred data fusion includes: the BIM model data and remote sensing image data are registered in three dimensions by Gaussian mixture model, and the registration error is controlled within 0.3 pixel units.

[0025] The application further discloses a mobile terminal device, which comprises a multispectral camera array, a LiDAR scanning module and a 5G communication module, and is provided with an expandable differential GPS antenna on the back of the device, and the positioning accuracy reaches the centimeter level.

[0026] In the application, the touch screen surface is preferably covered with a pressure sensing layer, three-dimensional gesture operation recognition is supported, and the pressure sensing resolution is not less than 4096 levels.

[0027] The application further discloses a data verification system, which adopts alliance block chain technology and comprises a space-time stamp service module, and planning modification records are stored in a Merkle tree structure, and each data block comprises a Beidou positioning time and a quantum random number signature.

[0028] In the application, the block chain node is preferably deployed on a land cloud platform, and an improved PBFT consensus mechanism is adopted, and the verification delay is not more than 200 ms.

[0029] The application further discloses a multi-user collaborative editing method, which is realized by a digital twin engine, supports synchronous display of planning schemes for at least 8 terminals, adopts an adaptive streaming protocol, and the bandwidth occupancy rate is reduced by 40%.

[0030] In the application, the conflict detection module preferably adopts an R-tree spatial index algorithm, and the detection response time is less than 50 ms.

[0031] The application further discloses a data security transmission method, which adopts a national secret SM4 algorithm for encryption, and dynamically generates segmented keys, and the key segments are automatically updated every 30 seconds.

[0032] On the basis of the above, the application discloses a mobile terminal heat dissipation system, which comprises a graphene heat conduction layer and a micro eddy current fan, and can maintain 8 hours of continuous work under an environment temperature of 40 DEG C.

[0033] In the above-mentioned technology, the digital twin engine is realized, at least 8 terminals are supported to synchronously display planning schemes, an adaptive streaming protocol is adopted, and the bandwidth occupancy rate is reduced by 40%. The specific technical scheme is as follows:

[0034] I. Digital twin engine architecture, using distributed microservice architecture, including scene synchronization service (SceneSync), operation log service (OpLog) and state snapshot service (Snapshot) built-in lightweight WebGL renderer, supporting real-time parsing of GLTF format three-dimensional model; Dynamic LOD control: automatically adjust the model precision level (5 levels) according to the terminal GPU performance.

[0035] II. Adaptive streaming protocol (ASTP) bandwidth optimization mechanism: based on H.265 interframe prediction coding (key frame interval dynamic adjustment), spatial data block transmission (differential update according to 1km*1km grid unit), operation instruction compression transmission (using DEFLATE algorithm compression rate ≥75%), dynamic code rate adjustment: detect network quality every 60 seconds (RTT≤100ms, enable 4K code flow), support TCP / UDP dual mode switching (packet loss rate> 5% switch UDP+ARQ).

[0036] III. Terminal synchronization guarantee, using hybrid clock synchronization algorithm (PTP+NTP), time deviation <2ms, conflict resolution strategy: spatial object editing conflict: based on R-tree detection of claim 8, attribute modification conflict: using Last-Write-Win strategy (with operator weight coefficient), state synchronization period: default 200ms / time (configurable to 50-1000ms).

[0037] IV. Performance index verification, test environment: Huawei cloud ECS (8-core 16G) + mobile terminal (Kirin 9000 chip), comparison benchmark: traditional WebSocket long connection scheme, actual measurement data: 8 terminal concurrency bandwidth: ASTP scheme 12.8Mbps vs. traditional scheme 21.3Mbps, first frame rendering delay: ASTP scheme 380ms (5G network environment).

[0038] In the drawings of the present application Figure 3 , the schematic diagram of the multi-user collaborative editing interface of the present application is as follows:

[0039] I. Basic architecture design.

[0040] 1. User permission management module, including design role permission grading (administrator, editor, observer), setting "only specified personnel can edit" or "everyone can edit" permission through sharing link; Integrated login authentication (such as QQ / WeChat), bind user identity.

[0041] 2. Real-time communication layer is built, using WebSocket long connection to realize client-server bidirectional communication, ensuring millisecond-level synchronization of editing operations and standardization of message format: defining operation types (insertion / deletion / movement), position coordinates, user ID, etc.

[0042] 3. Conflict detection engine uses R-tree spatial index application, including dividing document content into regions into minimum bounding rectangles (MBRs), such as table cells or text paragraphs, and detecting MBR overlap of operation regions in real time when users edit: if the overlap rate > threshold (e.g. 30%), trigger conflict warning (e.g. highlight conflict area), no overlap then directly synchronize changes. Conflict resolution strategy: use OT (operation transformation) or CRDT (conflict-free replicated data type) algorithm to automatically merge edits.

[0043] II. Interface interaction design.

[0044] 1. Collaborative state visualization, real-time display of online user avatars and cursor positions, different users distinguished by color, R-tree conflict detection results visualized: conflict areas covered with red translucent layer, hovering displays conflict user list.

[0045] 2. Editing operation feedback mechanism, user input is rendered locally and broadcasted immediately; after receiving others' operations, dynamically update the interface (e.g. cell data changes with fade-in animation prompt).

[0046] 3. History version management, sidebar integrated "collaboration record" panel, showing modification history on timeline, supporting version comparison and rollback, recording last modifier, timestamp and modification content summary.

[0047] III. Exception handling and optimization.

[0048] 1. Network interruption fault tolerance, local cache unsynchronized operations, automatic retransmission after network recovery, conflict cannot be automatically merged, pop-up resolution panel for user to manually select version.

[0049] 2. Performance optimization measures, R-tree index incremental update: only recalculate MBR of changed areas, high-frequency operation throttling (e.g. continuous input every 200ms batch synchronization once).

[0050] IV. Design verification process.

[0051] 1. Prototype testing, simulating multi-user concurrent editing scenarios, verifying R-tree conflict detection accuracy and real-time synchronization delay.

[0052] 2. User experience walkthrough, inviting target users to test permission settings, conflict prompt clarity, etc. key paths.

[0053] Embodiment one: AR site survey, as follows:

[0054] The planner scans the area to be developed using a customized tablet, and the device generates centimeter-level point cloud data through LiDAR, which is superimposed on satellite images to form a three-dimensional base map. When a geological fault is detected, the system automatically retrieves historical planning data and displays it in a semi-transparent manner, prompting planning conflict areas through color differences.

[0055] Embodiment two: blockchain storage, as follows:

[0056] When the use of a certain plot changes, the modification record is split into multiple data blocks, which are verified by more than three land nodes and then chained. Each block contains a modification timestamp, operator biometric features, and a modified area space hash value, supporting fast positioning of specific versions during subsequent audits.

[0057] Embodiment three: emergency coordination, as follows:

[0058] During a typhoon disaster, terminals from five departments simultaneously access the system. The edge server dynamically allocates computing resources, and the disaster impact range prediction model is given priority to 80% GPU computing power. The delay of the disaster damage assessment results displayed synchronously by each terminal is controlled within 300ms.

[0059] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the technical principles of the present application, several improvements and modifications can be made, which should also be considered within the scope of protection of the present application.

Claims

1. A land space planning data interaction method, characterized in that , comprising: Collecting field geographic information data through mobile terminals, combining edge computing nodes for real-time data fusion, and generating augmented reality space marker layers.

2. The land space planning data interaction method according to claim 1, characterized in that The data fusion includes: three-dimensional registration of BIM model data and remote sensing image data through Gaussian mixture model, with registration error controlled within 0.3 pixel units.

3. A mobile terminal device comprising a multi-spectral camera array, a LiDAR scanning module, and a 5G communication module, characterized in that The device is integrated with an expandable differential GPS antenna on the back, with positioning accuracy reaching centimeter level.

4. A mobile terminal device according to claim 3, characterised in that The touch screen surface is covered with a pressure sensing layer, supporting three-dimensional gesture operation recognition, with pressure sensing resolution not less than 4096 levels. 5.A data verification system employing consortium blockchain technology, characterized in that, A space-time stamp service module is included, with planning modification records stored in a Merkle tree structure, each data block containing Beidou positioning time and quantum random number signature.

6. The data verification system of claim 5, wherein, The blockchain node is deployed on the national land cloud platform, using an improved PBFT consensus mechanism, with verification delay not exceeding 200ms.

7. A multi-user collaborative editing method, implemented by a digital twin engine, supporting at least 8 terminals to display a planning scheme synchronously, characterized in that, An adaptive streaming protocol is used, reducing bandwidth occupancy by 40%.

8. The method of claim 7, wherein, The conflict detection module uses R-tree spatial indexing algorithm, with detection response time less than 50ms.

9. A data security transmission method using the SM4 algorithm of the State Secret to encrypt, characterized in that, The dynamic generation of segmented keys automatically updates key fragments every 30 seconds.

10. A mobile terminal heat dissipation system comprising a graphene heat conducting layer and a micro- vortex fan, characterized in that, It can maintain continuous work for 8 hours at an ambient temperature of 40°C.

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