Design of a low-cost integrated Electrical Resistance Tomography(ERT) system based on serial bus

A low-cost integrated ERT system based on serial bus and 2 evaluation boards with 8 electrodes is designed and implemented. Tikhonov regularization is adopted for image reconstruction with conductance values measured from the designed system. Test results suggest that the system can produce reliable and repeatable measurements for image reconstructions of multiple objects with the cost lower than 100 GBP. Comparisons between the proposed low-cost system and commercial ERT system are also implemented to conclude the advantages and drawbacks of the proposed system.