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CN-122028019-A - NFC communication information interaction method based on digital text creation handmodel

CN122028019ACN 122028019 ACN122028019 ACN 122028019ACN-122028019-A

Abstract

The invention relates to the technical field of digital text creation, in particular to an NFC communication information interaction method based on a digital text creation handmodel, which is used for determining an initial position of an NFC tag based on three-dimensional scanning and finite element analysis and correcting and optimizing position coordinates through material density; then the reasonable gap size range is locked through radio frequency simulation, and the damping layer is designed by combining vibration mode analysis to eliminate frequency interference; then constructing a packaging grid model, and determining a tag orientation angle through a particle swarm optimization algorithm through multi-scene interference verification; and finally generating an integrated protocol resisting metal interference and an embedded firmware passing verification. The invention realizes the noninductive interaction of the picking-up connection, gives consideration to the appearance integrity and the structural strength of the hand, remarkably improves the success rate of NFC signal reading, the angle tolerance and the environmental adaptability, builds a stable and natural entity-digital linkage channel for digital text creation hand, enhances the immersion of users and the emotional connection of brands, and is suitable for the mass production of digital text creation hand of various materials and structures.

Inventors

  • Shen Yizhuang
  • CHEN XIAOYU
  • HUANG RUOSHAN

Assignees

  • 广东工贸职业技术学院

Dates

Publication Date
20260512
Application Date
20260129

Claims (10)

  1. 1. The NFC communication information interaction method based on the digital text creation handmodel is characterized by comprising the following steps of: S1, acquiring surface curvature distribution data by scanning a hand-held three-dimensional model, simulating an electromagnetic field propagation path by adopting a finite element analysis method to obtain a field intensity distribution diagram of a label placement area, and determining a peak area in the field intensity distribution diagram as an initial label position; S2, extracting peripheral material density parameters according to the initial label position, adjusting position offset if the density parameters exceed a preset threshold value, and judging that the variation trend converges forward through iterative calculation of the field intensity variation trend after the offset value to obtain optimized label position coordinates; S3, acquiring the gap size of the adjacent structure from the optimized tag position coordinates, simulating the coupling effect of the tag antenna and the gap size by adopting radio frequency simulation software, obtaining a signal attenuation coefficient under the coupling effect, and determining the gap size range when the signal attenuation coefficient is lower than a threshold value; S4, acquiring handy vibration mode data in a gap size range, introducing damping layer parameters if the vibration mode data show that the resonance frequency is overlapped with the NFC working frequency, calculating the influence of the damping layer parameters on frequency deviation through a finite difference time domain method, judging that the frequency deviation is not overlapped, and obtaining a damping layer thickness value; S5, constructing a label packaging grid model according to the thickness value of the damping layer, generating a plurality of groups of environment interference scenes by adopting a Monte Carlo simulation method, obtaining statistical distribution of reading success rate under the scenes, and determining packaging grid parameters when the average value of the statistical distribution is higher than a threshold value; S6, extracting boundary condition constraints from packaging grid parameters, searching a label orientation angle aiming at an operating particle swarm optimization algorithm under the constraints to obtain a reading angle tolerance curve corresponding to the orientation angle, judging that the curve covers a hand-held gesture range of a user, and obtaining final orientation angle setting; S7, generating an integrated protocol sequence through final orientation angle setting, activating self-adaptive gain adjustment if a metal interference signal is detected in the protocol sequence, calculating a distance tolerance value after gain adjustment through a real-time feedback loop, and judging that the distance tolerance value is stabilized in a target interval to obtain a complete integrated protocol; S8, compiling the embedded firmware codes according to the complete integrated protocol, transmitting the firmware codes to the testing equipment by adopting a wireless updating mechanism, obtaining response time delay data after the equipment executes the firmware codes, determining that the response time delay data is lower than a threshold value, and obtaining the firmware version passing verification.
  2. 2. The NFC communication information interaction method based on a digital text creation handout model according to claim 1, wherein initial tag position determination comprises curvature feature mapping, electromagnetic field path modeling and field intensity peak identification, optimized tag position coordinates comprise material density correction, offset iterative adjustment and field intensity convergence judgment, gap size range comprises coupling effect simulation, attenuation coefficient calculation and threshold matching analysis, damping layer thickness value comprises vibration mode acquisition, frequency overlapping detection and damping parameter optimization, packaging grid parameters comprise grid structure modeling, interference scene simulation and reading success rate assessment, final orientation angle setting comprises boundary constraint extraction, angle optimization search and tolerance curve verification, complete integration protocols comprise protocol sequence generation, metal interference response and distance tolerance stability control, and firmware passing verification comprises firmware compiling generation, wireless updating deployment and response time delay standard reaching confirmation.
  3. 3. The NFC communication information interaction method based on the digital text creation handy model of claim 1, wherein the steps of obtaining surface curvature distribution data by scanning the handy three-dimensional model, simulating an electromagnetic field propagation path by adopting a finite element analysis method to obtain a field intensity distribution diagram of a tag placement area, and determining a peak area in the field intensity distribution diagram as an initial tag position are specifically as follows: Acquiring the point cloud data of the surface of the hand-held entity through high-precision three-dimensional scanning equipment, reconstructing a complete geometric model of the hand-held entity, extracting local curvature distribution characteristics and generating a curvature thermodynamic diagram; based on the curvature thermodynamic diagram, combining with the structural information of the internal cavity of the hand, constructing a propagation model of an electromagnetic field in a non-uniform medium by adopting a finite element method, and simulating field intensity responses of different areas; Based on the field intensity response result, identifying an area with the maximum signal intensity and good space continuity in a field intensity distribution map as a candidate tag implantation position set; And screening out the optimal initial label position by comprehensively considering the requirements of the appearance integrity and the structural strength of the handmade based on the candidate label implantation position set.
  4. 4. The NFC communication information interaction method based on the digital text creation handout model of claim 1, wherein the method is characterized in that the density parameters of surrounding materials are extracted according to the initial label position, if the density parameters exceed a preset threshold value, the position offset is adjusted, the change trend is judged to be converged forward through the field intensity change trend after the offset is calculated iteratively, and the step of obtaining the optimized label position coordinates is specifically as follows: Based on the initial tag position, matching resin or alloy components of the corresponding region by using a material database, and extracting equivalent electromagnetic density parameters; If the density parameter is higher than a preset threshold value, setting an initial offset vector along the curvature gradient direction to generate a new candidate position; Re-performing field intensity simulation based on the new candidate position, and recording the field intensity variation amplitude and direction to form an iterative feedback sequence; Repeating the offset and simulation processes until the field intensity change tends to rise steadily, judging that the field intensity is converged positively, and outputting the final optimized label position coordinates.
  5. 5. The NFC communication information interaction method based on the digital text creation handmodel of claim 1, wherein the method is characterized in that the gap size of the adjacent structure is obtained from the optimized label position coordinates, the coupling effect of the label antenna and the gap size is simulated by adopting radio frequency simulation software, the signal attenuation coefficient under the coupling effect is obtained, and the step of determining the gap size range when the signal attenuation coefficient is lower than a threshold value is specifically as follows: extracting a minimum physical gap size between adjacent support structures or decorative components based on the optimized label position coordinates; inputting the gap size as a boundary condition into a radio frequency simulation platform, and constructing a full-wave electromagnetic model comprising a tag antenna and surrounding structures; Running simulation to obtain return loss and insertion loss data under different gap configurations, and calculating corresponding signal attenuation coefficients; Gap size combinations with attenuation coefficients below the communication reliability threshold are screened to form a range of gap sizes that can be implemented.
  6. 6. The NFC communication information interaction method based on the digital text creation handout model of claim 1, wherein the method is characterized in that aiming at acquiring handout vibration mode data in a gap size range, if the vibration mode data show that the resonance frequency is overlapped with NFC working frequency, damping layer parameters are introduced, the influence of the damping layer parameters on frequency deviation is calculated through a finite difference time domain method, no overlap is caused after the frequency deviation is judged, and the step of obtaining a damping layer thickness value is specifically as follows: Based on the gap size range, carrying out modal analysis on the overall structure to obtain the vibration modal frequency of the overall structure under a typical use scene; comparing the vibration mode frequency with an NFC standard working frequency band, and judging that resonance interference risks exist if the frequency bands overlap; introducing a flexible damping layer into a label packaging area, setting initial thickness parameters and constructing a dynamic structure model containing the damping layer; And simulating the modulation effect of damping layers with different thicknesses on the natural frequency of the system by adopting a time domain numerical method until the formants completely move out of the NFC working frequency band, and outputting the thickness value of the damping layer meeting the isolation requirement.
  7. 7. The NFC communication information interaction method based on the digital text creation handout model of claim 1, wherein the method is characterized in that a label packaging grid model is built according to a damping layer thickness value, a Monte Carlo simulation method is adopted to generate a plurality of groups of environment interference scenes, statistical distribution of reading success rate under the scenes is obtained, and the step of determining packaging grid parameters when the average value of the statistical distribution is higher than a threshold value is specifically as follows: designing a multi-level packaging structure and dividing fine grid units based on the thickness value of the damping layer to form a label packaging grid model; Based on the packaging grid model, randomly generating a plurality of groups of simulation scenes covering typical interference factors such as temperature fluctuation, metal proximity, hand-held shielding and the like; Executing virtual NFC reading operation in each group of scenes, recording successful triggering times and counting overall reading success rate distribution; and adjusting the porosity, interlayer spacing and shielding layer layout of the packaging grid until the average value of the distribution of the reading success rate is higher than a preset performance threshold value, and locking the final packaging grid parameters.
  8. 8. The NFC communication information interaction method based on the digital text creation handy model of claim 1, wherein boundary condition constraint is extracted from packaging grid parameters, a label orientation angle is searched for by running a particle swarm optimization algorithm under the constraint, a read angle tolerance curve corresponding to the orientation angle is obtained, the curve is judged to cover a user handheld gesture range, and the step of obtaining final orientation angle setting is specifically as follows: Based on the packaging grid parameters, extracting the mounting freedom degree and rotation limiting conditions of the tag antenna in a three-dimensional space to form a boundary constraint set of directional optimization; Initializing a particle swarm in the boundary constraint set, and iteratively searching an optimal antenna pointing angle by taking the read signal strength as an fitness function; based on the optimal pointing angle, simulating reading responses under different hand-held gestures of users, and drawing a relation curve of angle tolerance and signal intensity; And verifying whether the angle tolerance curve completely covers more than 90% of human-computer interaction gestures in daily use, and if so, determining that the angle tolerance curve is the final orientation angle setting.
  9. 9. The NFC communication information interaction method based on the digital text creation handout model of claim 1, wherein the method is characterized in that an integrated protocol sequence is generated through final orientation angle setting, if a metal interference signal is detected in the protocol sequence, self-adaptive gain adjustment is activated, a distance tolerance value after the gain adjustment is calculated through a real-time feedback loop, the distance tolerance value is judged to be stabilized in a target interval, and the step of obtaining a complete integrated protocol is specifically as follows: based on the final orientation angle setting, configuring communication parameters and wake-up logic of the NFC chip to generate a basic integrated protocol sequence; Monitoring metal reflection characteristics in a received signal in real time in the protocol execution process, and triggering a gain self-adaptive module once an interference signal is identified; dynamically adjusting the transmitting power and the receiving sensitivity through a built-in feedback loop, and calculating the effective reading distance tolerance under the current working condition; And continuously monitoring whether the distance tolerance value stably falls into a preset target interval, and if the continuous multiple sampling meets the requirement, solidifying the current parameter combination to form a complete integrated protocol.
  10. 10. The NFC communication information interaction method based on the digital text creation handout model of claim 1, wherein compiling an embedded firmware code according to a complete integration protocol, transmitting the firmware code to test equipment by adopting a wireless updating mechanism, obtaining response time delay data after the equipment executes the firmware code, determining that the response time delay data is lower than a threshold value, and obtaining a verified firmware version comprises the following steps: Based on the complete integration protocol, generating embedded firmware source codes suitable for the micro NFC chip, and finishing cross compiling and secure signature; Pushing the firmware code to test equipment deployed in a prototype hand-office through a near-field wireless channel, and starting a remote burning process; Triggering NFC interaction under various illumination, temperature and humidity and handheld conditions, and acquiring end-to-end response time delay of the equipment from sensing page jump; If the response delay data is lower than the user experience threshold value in all the test scenes, marking the firmware version as verification passing can be used for mass production deployment.

Description

NFC communication information interaction method based on digital text creation handmodel Technical Field The invention relates to the technical field of digital text creation, in particular to an NFC communication information interaction method based on a digital text creation handmodel. Background When collection and culture consumption rapidly develop, the handhold is used as an entity carrier for fusing artistry, narrative and emotion hosting, not only becomes an important medium for expressing individuality acceptance and culture attribution for young consumer groups, but also is brought into digital literature development category by culture institutions such as libraries and the like, and a plurality of libraries are based on core culture resources such as collection ancient books, celebrity manuscripts and landmark buildings and the like to push out serial theme digital literature handholds, thereby helping the living propagation of cultural heritage and building a new carrier for deep interaction with readers for the libraries. Both brands and libraries desire to deliver their aesthetic value, collection attributes, and cultural connotation through their own, more effort is directed to building a continuous, deep emotional connection and digital interaction channel with users to create differentiated advantages in highly competitive, literature markets and to enhance the cultural services extension capabilities of libraries. However, when the current mainstream library theme text creation is implemented in entity-digital linkage, the current mainstream library theme text creation generally depends on a two-dimensional code or a website guiding mode on a packaging box. The method requires a user to actively search a two-dimensional code, scan by using a camera of a mobile phone, wait for image recognition to be completed, jump to a designated webpage or manually input an address, and the whole process comprises a plurality of discrete and easily interfered operation steps. In actual use, interaction interruption is often caused by insufficient ambient light, deviation of shooting angles, label fouling or equipment compatibility, and user experience is seriously affected. More importantly, the interactive mode breaks the natural and instant emotion connection between the user and the user, and is difficult to enable the user to seamlessly access digital content ecology constructed by brands or libraries at the moment of picking up the user, so that the immersion and emotion temperature of interaction are weakened, and the cultural transmission efficiency of the theme of the library is not fully exerted. In order to realize the real picking-up and connection-free interaction experience, there is a need for an identification mechanism which can be embedded in a handheld body and can be rapidly identified by a mobile device without additional operation. Near Field Communication (NFC) technology is considered an ideal technology path because of its non-contact, short range, low power consumption and high security features. However, integrating a stable and reliable NFC tag in a highly limited physical space of a micro-handheld device faces multiple technical challenges, namely, on one hand, the handheld device is generally made of high-density resin, metal coating or composite material, which may generate shielding or interference to electromagnetic fields to significantly reduce the success rate of reading NFC signals, and on the other hand, factors such as the embedded position, the packaging structure, the antenna direction and the surrounding geometric gaps of the tag directly affect the radio frequency performance of the tag, and if the tag is improperly designed, the reading distance is extremely short, the angle tolerance is insufficient or the tag is completely ineffective in a specific handheld gesture. The prior art lacks a systematic NFC integration method aiming at complex curved surface structures and material characteristics, labels are often laid only by experience, appearance integrity, collection value and communication reliability are difficult to consider, the problem is particularly prominent in library theme handlings, fine details and appearance integrity of cultural elements are often required to be reserved for library text creation handlings, tolerance of structural change is lower, and interference resistance and durability in public display scenes are further required to be considered. Therefore, how to accurately determine the optimal embedded position, the orientation angle, the packaging parameters and the anti-interference strategy of the NFC tag through scientific modeling and multi-physical-field collaborative optimization on the premise of not damaging the aesthetic design and the structural integrity of the hand, so that the user is ensured to instantly and stably trigger the digital content jump only by naturally attaching the mobile phone with the function of starting