Design and Verification of Electrical Impedance Tomography System Based on Improved AD7606
To solve the problems of low detection accuracy,large dynamic range of acquisition voltage,and inability to prepare for identifying target bodies in the test area in current electrical impedance tomography systems,an improved differential amplification circuit is proposed as the pre-processing module of AD7606.Compared with traditional AD acquisition,it reduces common mode noise and other interference in the system.In order to achieve fast and efficient computer simulation,a finite difference calculation method based on polar coordinates is proposed,and dynamic electri-cal impedance tomography imaging based on Tikhonov regularization algorithm is implemented.The simulation experiment verifies the performance and imaging effect of the data acquisition system,indicating that the system can accurately iden-tify the position information of a single target in the test area.
万方数据
维普
