Ultrasonic Sensors with Mechanical Couplers： Simulation and Validation  

作　　者：Monica Femendez Cristina Rodriguez Juan M. Perez Oria Manuel Ibarra Luciano Alonso 

机构地区：[1]Department of Electronic Technology and Automatic Control Systems, University of Cantabria, Santander 39005, Spain

出　　处：《Journal of Mathematics and System Science》2012年第4期264-271,共8页数学和系统科学（英文版）

摘　　要：The use of ultrasonic sensors has varied applications, but the sensor operation frequency limits the operating distance. An easy way to increase this distance is to couple a mechanical element （horn）, but it is necessary to characterize this technique. In this paper the results obtained in a study of the behaviour of mechanical elements coupled to an ultrasonic sensor using finite element techniques are presented. These results have been obtained using Comsol Multiphysics modelling. Also, the effect caused by the sensor size on the radiation acoustic pressure has also been evaluated. In other way, in this paper it is presented the results obtained in the laboratory measurements. First, it is studied the influence of a straight horn attached to the ultrasonic sensor. Later, it is presented the variation in the sound pressure on the radiation axis when the sensor varies its size. In the final part of the paper, the experimental validation of the simulations is presented.

关 键 词：ULTRASOUNDS SENSORS homs radiation pattem. 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH13[自动化与计算机技术—控制科学与工程]