公开(公告)号：US6144288A

公开(公告)日：2000-11-07

申请号：US828377

申请日：1997-03-28

申请人： Ronald R. Jahn ,  Ruth E. Hubbell ,  David L. McClanahan ,  Walter L. Rutchik ,  Gordon Barr Spellman

发明人： Ronald R. Jahn ,  Ruth E. Hubbell ,  David L. McClanahan ,  Walter L. Rutchik ,  Gordon Barr Spellman

IPC分类号： G06K19/067 ,  H04Q1/00

CPC分类号： G06K19/067

摘要： A circuit assembly senses a state of a variable state device, wherein a data signal representative of the state is communicated via wireless telegraphy. A surface acoustic wave (SAW) device, having a plurality of interdigital transducers (IDTs) comprises a wave launching IDT and a state information IDT, wherein the plurality of IDTs are in acoustical communication and the state information IDT is in electrical communication with an antenna through the variable state device. An RF transceiver communicates a trigger signal to the SAW device, wherein the trigger signal causes a launching of a SAW wave from the wave launching IDT towards the state information IDT. The state information IDT generates a signal pulse in response thereto and communicates the pulse to the antenna through the variable state device. A transceiver control module, in operative communication with the RF transceiver enables communication of the trigger signal and reads the data signal, wherein the trigger signal and data signal are communicated between the RF transceiver in the SAW device via wireless telegraphy.

摘要翻译： 电路组件检测可变状态设备的状态，其中表示状态的数据信号通过无线电报进行通信。 具有多个叉指式换能器（IDT）的表面声波（SAW）装置包括波浪发射IDT和状态信息IDT，其中多个IDT处于声学通信状态，状态信息IDT与天线电通信 通过可变状态设备。 RF收发器将触发信号传送到SAW器件，其中触发信号引起从波发射IDT向状态信息IDT发射SAW波。 状态信息IDT响应于此产生信号脉冲，并通过可变状态装置将该脉冲传送到天线。 与RF收发器操作通信的收发器控制模块使得能够通信触发信号并读取数据信号，其中触发信号和数据信号通过无线电报在SAW装置中的RF收发器之间通信。