一种基于物理信息核函数神经网络的扩散型动态数据溯源方法

By introducing a physical information kernel function as an activation function into the neural network, a physical information kernel function neural network is constructed. This solves the problems of low efficiency and poor accuracy of traditional methods in long-term heat and mass transfer data tracing, and realizes fast and accurate dynamic data tracing. It is suitable for fire origin analysis, pollutant tracing, and drug molecule delivery path inversion.

CN118335246BActive Publication Date: 2026-07-17HOHAI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Filing Date
2024-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional physical information neural networks are inefficient and inaccurate when tracing the source of heat and mass transfer over long periods, making it difficult to simulate reverse heat and mass transfer problems.

Method used

A physical information kernel function is introduced as the activation function of a neural network. A physical information kernel function neural network is constructed. By combining the boundary and final conditions of the diffusion equation, a loss function is constructed by modifying the source term. The neural network is then trained to trace the heat and mass transfer dynamic data at any historical moment.

Benefits of technology

It enables rapid and accurate tracing of heat and mass transfer dynamic data at any historical moment, overcoming the computational bottleneck of traditional methods, improving accuracy and efficiency, and is suitable for fire origin analysis, pollutant tracing, and drug molecule delivery path inversion.

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Abstract

本发明公开了一种基于物理信息核函数神经网络的扩散型动态数据溯源方法,包括在问题区域的边界和内部施加探针,收集边界和内部的传热传质型数据,作为边界条件和最终条件,确定扩散方程;根据扩散方程确定物理信息核函数,将物理信息核函数作为激活函数构造物理信息核函数神经网络;根据源项形式增加额外的隐藏层神经元修正源项影响;优化算法最小化所改进的损失函数并确定神经网络参数;该物理信息核函数神经网络被用于恢复任意历史时刻的传热传质型动态数据。本发明克服了传统物理信息神经网络在长时间历程传热传质型动态数据溯源时精度低、计算慢的缺点。
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