声学CT储粮温度监测收发器阵列设计

Design for transceiver array of temperature in stored grain monitored by acoustic CT

针对声波收发器阵列设计的合理性直接影响声学CT系统的测量实时性及温度场重建精度等问题,提出了声学CT储粮温度监测收发器阵列设计方法.该方法对围绕圆筒形仓布置的声波收发器数量、布局和有效声波路径选择等参数进行了计算机仿真设计.三种典型的三维模型温度场重建结果表明,有效声波传播路径选择、收发器布置的层数、每层布置收发器的个数都会对模型温度场重建质量产生较大影响.通过对声波收发器阵列的仿真设计,可优化收发器阵列各参数,提高声学CT系统的性能和温度场重建精度.

In order to solve the problem that the rationality of design for the sound transceiver array directly affects the real-time measurement of acoustic CT system and the reconstruction accuracy of temperature field,a design method for the transceiver array of temperature in stored grain monitored by acoustic CT was proposed.In addition,the computer simulation design was performed for such parameters as the number and layout of sound transceivers arranged around a cylindrical granary as well as the effective sound path selection.The temperature field reconstruction results of three typical three-dimensional models show that the effective sound propagation path selection,the layer number of transceiver arrangement and the number of transceivers on each layer will have a greater impact on the reconstruction quality of temperature field in the model.Through the simulation design of sound transceiver array,the transceiver array parameters can be optimized.Furthermore,the performance of acoustic CT system and the reconstruction precision of temperature field can be improved.