电阻层析成像(ERT)系统工作模式的研究

Research on Work Mode of Electrical Resistance Tomography System

ERT系统中有多种数据采集方式,分别适用于不同的系统。且不同的数据采集方式下所得到的边界测量信号有不同的形式。提出一种电流源激励、电流检测的单电极激励的新型数据采集模式,分析新型数据采集模式与原数据采集模式的差异,通过实验验证新型模式的可行性。在提出的新型数据采集模式上采用方波电流激励方式,并取得了很好的实验结果。

There are different patterns of the boundary metrical signal when the data acquisition method is different in an ERT system. And the way to deal with the gained data is different too. A new data acquisition method that is electric current of square wave excitation and current measurement, which is named the single drive electrode method, is introduced. The differences of the new method and the method used in the ERT system are presented. The analysis of the data that get from the experiments shows the feasibility and liability of the new data acquisition method.