基于电阻抗成像技术的飞行员健康状态监测系统研究

Research on Pilot Health Monitoring System Based on Electrical Impedance Tomography

基于电阻抗成像的飞行员健康监测系统能够实时可持续地监测飞行员的健康状态。本文设计并实现了一种面向健康监测生物电阻抗成像测试系统,通过解决已知系统边界电压和电流,求解一定区域内生物组织电导率分布情况,并依据电导率的分布情况求解出对应的图像以实现成像。系统基于相关测试数据,采用正则化的高斯-牛顿算法实现了圆形场域的阻抗图像重建,实现了对不同位置、不同个数的成像对象的图像重建。仿真试验结果表明,生物电阻抗成像可以取得较好的成像效果,能够明显区分正常情况与病态情况下的生物阻抗图像,保障了图像重构的实时性和可靠性,从而为实现便携式飞行员健康状态监测系统的开发提供设计参考。

The pilot health monitoring system based on electrical impedance imaging can monitor the pilot's health status continuously in realtime.This paper designs and implements a bioelectrical impedance imaging test system for health monitoring.By solving the known system boundary voltage and current,it determines the conductivity distribution of biological tissues in a certain area,and the corresponding image is obtained based on the conductivity distribution.Based on relevant test data,the system uses the regularized Gauss-Newton algorithm to realize impedance image reconstruction in a circular field,achieving image reconstruction for imaging objects with different positions and numbers.The simulation experiment results show that bioelectrical impedance imaging can achieve good imaging results,which can clearly distinguish between normal and pathological bioelectrical impedance images,ensuring the real-time and reliability of image reconstruction.This provides a design reference for the development of a portable pilot health monitoring system.