公开(公告)号：EP1039444A2

公开(公告)日：2000-09-27

申请号：EP00102908.1

申请日：2000-02-12

申请人： L-3 Communications Corporation

发明人： Skinner, Colin W., Engineer ,  Xu, Qi-Change, Engineer

IPC分类号： G10K9/12

CPC分类号： G10K9/125 ,  G10K9/121

摘要： An improved transducer arrangement for low frequency sonar projectors that convert electric signals to mechanically generated acoustic signals. In one embodiment the arrangement has both a convex flextensional transducer and a concave flextensional transducer. An open side of the convex transducer is attached to a open side of the concave transducer by an intermediate bulkhead which closes each of the attached open sides. An end plate is attached to another open side of the convex transducer and another end plate is attached to another open side of the concave transducer such that the end plates close the attached open sides. In another embodiment, transducer assembly has a convex transducer having end plates and a concave transducer having end plates. Either one of the endplates of the concave transducer is attached to one of the endplates of the convex transducer, or an endplate of the concave transducer is also an endplate of the concave transducer. There is also provided a transducer drive circuit including one of the transducer assemblies wherein the convex transducer is electrically connected in series with the concave transducer. Means are provided for positively direct current biasing the convex transducer or the concave transducer and oppositely negatively direct current biasing the concave transducer or the convex transducer. Further means apply an alternating current driving signal to each of the convex transducer and the concave transducer. This configuration provides an improvement over the prior art in reduced transducer size and weight by doing away with a large isolation capacitor from the drive circuitry.

摘要翻译： 用于将电信号转换为机械产生的声信号的低频声纳投影仪的改进的换能器装置。 在一个实施例中，该装置具有凸弯曲换能器和凹弯曲换能器。 凸形传感器的开口侧通过闭合每个附接的开放侧面的中间隔板附接到凹形换能器的开口侧。 端板连接到凸形换能器的另一个开口侧，另一个端板附接到凹形换能器的另一个开口侧，使得端板封闭附接的开放侧面。 在另一个实施例中，换能器组件具有带有端板的凸形换能器和具有端板的凹形换能器。 凹形传感器的端板中的任一个连接到凸形换能器的端板之一，或者凹形换能器的端板也是凹形换能器的端板。 还提供了一种换能器驱动电路，其包括换能器组件之一，其中凸形换能器与凹形换能器串联电连接。 提供了用于对凸换能器或凹变换器进行正直流偏压的装置，并且相反地负直流偏置凹变换器或凸换能器的电流。 进一步的方法是将交流驱动信号施加到每个凸形换能器和凹形换能器。 这种配置通过从驱动电路中消除大的隔离电容器而在减小的换能器尺寸和重量方面提供了对现有技术的改进。

公开(公告)号：EP1039444A3

公开(公告)日：2004-06-23

申请号：EP00102908.1

申请日：2000-02-12

申请人： L-3 Communications Corporation

发明人： Skinner, Colin W., Engineer ,  Xu, Qi-Change, Engineer

IPC分类号： G10K9/12

CPC分类号： G10K9/125 ,  G10K9/121

摘要： An improved transducer arrangement for low frequency sonar projectors that convert electric signals to mechanically generated acoustic signals. In one embodiment the arrangement has both a convex flextensional transducer and a concave flextensional transducer. An open side of the convex transducer is attached to a open side of the concave transducer by an intermediate bulkhead which closes each of the attached open sides. An end plate is attached to another open side of the convex transducer and another end plate is attached to another open side of the concave transducer such that the end plates close the attached open sides. In another embodiment, transducer assembly has a convex transducer having end plates and a concave transducer having end plates. Either one of the endplates of the concave transducer is attached to one of the endplates of the convex transducer, or an endplate of the concave transducer is also an endplate of the concave transducer. There is also provided a transducer drive circuit including one of the transducer assemblies wherein the convex transducer is electrically connected in series with the concave transducer. Means are provided for positively direct current biasing the convex transducer or the concave transducer and oppositely negatively direct current biasing the concave transducer or the convex transducer. Further means apply an alternating current driving signal to each of the convex transducer and the concave transducer. This configuration provides an improvement over the prior art in reduced transducer size and weight by doing away with a large isolation capacitor from the drive circuitry.