| Popis: |
For people with urinary incontinence who cannot control bladder urination freely, the principle of electrical impedance imaging was used to simulate the bladder state to select the electrode array method and excitation method suitable for bladder filling detection. In this paper, a three-dimensional human abdominal model including pelvis and bladder was constructed. The bladder filling degree is simulated by setting different bladder radii separately, and the electrodes are arranged on the surface of the model. The model designed in this paper is a common hierarchical array model and a rectangular array model based on bladder position design. The excitation, current of 5 mA is used to simulate the relative, interphase and adjacent excitation of two different electrode array models. Through the analysis of parameter voltage sensitivity and dynamic range, the evaluation of two-electrode array mode and three-electrode excitation was finally realized. The experimental results show that the rectangular array method and interphase excitation have more application value in bladder filling detection, which can more effectively obtain the voltage change caused by bladder volume change, which provides a basis for the design of bladder filling detection system. |
