公开(公告)号：US20140311244A1

公开(公告)日：2014-10-23

申请号：US14319342

申请日：2014-06-30

Applicant: UNIVERSITY OF EXETER

Inventor： Peter Robert Armitage

IPC: G01N29/04

CPC classification number: G01N29/04 ,  G01N29/043 ,  G01N29/12 ,  G01N29/348 ,  G01N29/42 ,  G01N29/4445 ,  G01N2291/014 ,  G01N2291/106 ,  G01N2291/2694

Abstract: Device and method for detecting a defect in a workpiece with a broadband transducer (10), a driving circuit connected to the transducer to operate the transducer in a actuator mode, a signal output circuit connectable to operate in a sensor mode, a control for selectively connecting the transducer to the driving circuit or signal output circuit wherein the driving circuit includes at least a pair of oscillators for generating signals of at least frequencies F1 and F2 and a summer for summing the signals to provide a driving circuit for the transducer.

Abstract translation: 用于使用宽带传感器（10）检测工件中的缺陷的装置和方法，连接到换能器以在致动器模式下操作换能器的驱动电路，可连接以传感器模式操作的信号输出电路，用于选择性地 将所述换能器连接到所述驱动电路或信号输出电路，其中所述驱动电路至少包括一对用于产生至少频率F1和F2的信号的振荡器，以及用于对所述信号求和以提供所述换能器的驱动电路的加法器。

公开(公告)号：US10132780B2

公开(公告)日：2018-11-20

申请号：US14319342

申请日：2014-06-30

Applicant: UNIVERSITY OF EXETER

Inventor： Peter Robert Armitage

IPC: G01N29/04 ,  G01N29/12 ,  G01N29/34 ,  G01N29/42 ,  G01N29/44

Abstract: Device and method for detecting a defect in a workpiece with a broadband transducer (10), a driving circuit connected to the transducer to operate the transducer in a actuator mode, a signal output circuit connectable to operate in a sensor mode, a control for selectively connecting the transducer to the driving circuit or signal output circuit wherein the driving circuit includes at least a pair of oscillators for generating signals of at least frequencies F1 and F2 and a summer for summing the signals to provide a driving circuit for the transducer.