ERT/UTT双模态传感器尺寸优化仿真

针对电阻/超声双模态层析成像传感器配置优化问题,提出管道同一截面内配置电极与超声探头,实现对管道内同一被测对象同一时间的检测。采用数值仿真方法,考察电学敏感场与超声敏感场在管道内分布情况,优化双敏感场的互补信息获取范围,获得被测场域内同一被测对象的多敏感信息。为降低被测截面内电极对超声敏感场的影响,定义双敏感场的最优灵敏度与均匀度,利用数值仿真方法对电极与超声探头的安装结构与尺寸进行优化,最终获得16电极与16超声探头间隔放置的最优空间结构与相对尺寸。

Simulation based sensor size optimization for dual-modality ERT/UTT

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.