【摘要】 对生物组织进行电刺激的过程中，确保刺激电极之间的阻抗处于刺激器的负载范围之内，是保障刺激效果的关键条件之一。该文采用STM32单片机与AD5933阻抗测量芯片构成阻抗检测装置，并在琼脂糖凝胶与3D打印模具模拟的生物组织上进行电刺激和阻抗测试。实验结果表明，电极安放位置和电极位置的变动，对电极间阻抗影响大，对于长时间、电极位置易动的电刺激实验而言，监测电极间的阻抗是非常必要的。更多还原

【Abstract】 In the process of electrical stimulation of biological tissue, the crucial point is that the bioimpedance between the stimulation electrodes are within the load range of the stimulator. In this paper, the STM32 system and AD5933 impedance measurement chip are used to form an bioimpedance detection device, and electrical stimulation and impedance testing are carried out on the biological tissue simulated by agarose gel and 3D printing mold. The experimental results show that the change of electrode position has a great influence on the bioimpedance between electrodes, so that it is quite necessary to monitor the bioimpedance between electrodes for long-term electrical stimulation experiments where the electrode position is easy to move.更多还原