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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。
In order to solve the optimization problem of resistive / ultrasonic dual-mode tomography sensor configuration, it is proposed that the electrodes and the ultrasonic probe be arranged in the same section of the pipeline to detect the same object in the pipeline at the same time. The numerical simulation method is used to investigate the distribution of electrical and ultrasonic fields in pipelines, and to optimize the range of complementary information acquisition in dual-sensitivity fields to obtain multi-sensitive information of the same object in the measured field. In order to reduce the influence of the electrodes on the ultrasound-sensitive field in the measured cross-section, the optimal sensitivity and uniformity of the dual-sensitive field are defined. The structure and size of the electrodes and the ultrasound probe are optimized by numerical simulation. Finally, 16 electrodes and 16 ultrasound Optimal spatial structure and relative dimensions for probe spacing.