Citation: | SUN Hongli, TAN Chao, DONG Fenget al. Simulation based sensor size optimization for dual-modality ERT/UTT[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(2): 388-394. doi: 10.13700/j.bh.1001-5965.2016.0120(in Chinese) |
For the installing structure and optimization of electrodes and ultrasonic transducers in the dual-modality electrical resistance tomography (ERT) and ultrasound transmission tomography (UTT), sensors on the same section of pipeline are proposed to measure the same object at the same time. With numerical simulation, sensitive field distributions of ERT and UTT inside the pipeline were studied to optimize the range of complementary information of electrical and ultrasonic field and to get the complementary multi-sensitive information of the same object in the sensitive field. To reduce the influence of electrodes on ultrasonic field, the sensitivity and uniformity of ERT and UTT sensitive field were defined. The installing structure and sizes of electrodes and ultrasonic transducers were optimized by simulations. The installing structure of 16 electrodes and 16 transducers in dual-modality ERT/UTT, and the optimized sizes of the relative electrode width and the relative ultrasonic transducer diameter were obtained.
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