服役载荷作用下界面损伤导致柔性电极信号漂移机理及校正方法

柔性电极传感器受复杂循环力作用会产生信号漂移，目前尚不清楚这类传感器力致信号漂移的机理，缺乏表征服役载荷与信号漂移的关系模型。因此无法发展有效的信号漂移校正方法。项目以柔性电极/皮肤界面为研究对象，研究服役载荷影响界面损伤以及损伤影响电信号的机理和规律，进而以界面损伤为桥梁，建立服役力载荷与柔性电极电信号漂移的定量关系模型，并基于模型发展对应的信号漂移校正方法。项目主要研究内容包括：1)柔性电极/皮肤界面复杂加载及损伤测量实验系统研制；2)服役载荷作用下柔性电极/皮肤界面损伤规律实验研究；3)损伤导致柔性电极/皮肤界面电压信号漂移模型研究；4)长期服役条件下柔性电极/皮肤界面电压信号校正方法研究。项目将研制一类可用于对柔性电极/皮肤界面模型进行复杂加载和损伤测量的实验系统，提出电极传感器力致电信号漂移的校正方法，为改进柔性电极类传感器信号稳定性和精确性提供新的设计思路。

Flexible electrode sensors are subjected to complex cyclic forces, which can lead to significant signal drift. Currently, the mechanism of force-induced signal drift of such sensors is unclear, leading to the lack of a model to characterize the relationship between service load and signal drift. Therefore, it is impossible to develop an effective signal drift correction method. The present project chooses the flexible electrode/skin interface as the research object, and investigates the mechanism and law of service load affecting interface damage and damage affecting electrical signals. The present project establishes a quantitative relationship model between service force and flexible electrode electrical signal drift through the bridge role of the interface damage, and then to develop a signal drift correction method based on the model. The main research contents of the project include: 1) to develop a flexible electrode/skin surface complex loading and damage measurement experimental system; 2) to experimentally investigate the flexible electrode/skin surface damage law under the service conditions; 3) to investigate the damage-induced voltage signal drift model of the flexible electrode/skin interface; 4) to investigate the voltage signal correction method of flexible electrode/skin interface under long-term service conditions. The project will develop a kind of experimental systems that can be used for complex loading and damage measurement of flexible electrode/skin interface models, and will propose a correction method for force-induced signal drift of flexible electrode sensors. Finally, it will provide new design ideas for improving signal stability and accuracy of flexible electrode sensors.