Electrode Position Optimization Method for Flexible Sensor Based on Electrical Impedance Imaging Technology

Abstract

The invention provides a flexible sensor electrode position optimizing method based on electrical impedance tomography. The method comprises the following steps: S1, arranging electrodes on a conductive material, so that a sensor array is defined, and collecting reference position of a central electrode; and S2, constructing a central reference electrode optimum position optimizing target function, and implementing particle swarm optimization on the target function so as to obtain an optimum central electrode position. With the application of the optimizing method, the optimum position of the central electrode can be determined, so that a resolution ratio of a flexible sensor can be improved, target position error can be reduced, and a discrimination index of a detection target can be improved.

Description

technical field [0001] The invention relates to the technical field of flexible sensors, in particular to a method for optimizing the electrode position of a flexible sensor based on electrical impedance imaging technology. Background technique [0002] As a flexible device for sensing surface force distribution, flexible sensors have a wide range of applications in robotics, biomechanics, medical measurement and other fields because of their excellent flexibility and stretchability, and can be attached to various irregular surfaces. application prospects. [0003] However, most of the traditional flexible sensors are based on array sensors made of polymer MEMS technology, and its preparation process is complex and costly. At the same time, in order to transmit data from a large-scale sensor array, a large amount of wiring is usually required inside it. The distribution of wires will not only cause electromagnetic noise, but also reduce the flexibility and extensibility of ...

AI Technical Summary

Problems solved by technology

The flexible sensor designed based on electrical impedance imaging, a non-destructive imaging technology, can realize an "integrated" structure without internal wiring and units, which overcomes the disadvantage of poor stretchability of traditional flexible sensors

[0005] The flexible sensor based on electrical impedance imaging technology also has its own shortcomings, that is, the spatial resolution is low, especially when the area of ​​the thin layer of conductive material is large, the detection sensitivity in the central area is poor, and a single boundary distribution will reduce the performance of the flexible sensor. Recognition ability, especially when identifying and distinguishing a large number of target objects and close distances, the detection target may even be lost. At present, there is no effective method to determine the best position of the central reference electrode

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