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2. 发明申请

US20110026365A1 ULTRASONIC TRANSDUCER AND SIGNAL DECAY TIME ADJUSTING METHOD APPLIED THERETO 审中-公开
标题翻译：超声波传感器和信号衰减时间调节方法
公开(公告)号：US20110026365A1
公开(公告)日：2011-02-03
申请号：US12847045
申请日：2010-07-30
申请人： Steef van Beckhoven , Johan Kalfs , Michel Klein Swormink , Hanting Chen , Sian-Cing Liao
发明人： Steef van Beckhoven , Johan Kalfs , Michel Klein Swormink , Hanting Chen , Sian-Cing Liao
IPC分类号： G01S7/524 , G01S7/527
CPC分类号： G01S7/524 , G01S7/527
摘要： A signal decay time adjusting method is used in an ultrasonic transducer. Firstly, a first driving signal is generated by a pre-processing module. When the first driving signal is received, an ultrasonic transmitting/receiving module generates vibration and transmits a sensing wave according to the first driving signal. Then, the pre-processing module stops generating the first driving signal so that the vibration generated within the ultrasonic transmitting/receiving module is decayed as a decay signal. Then, a second driving signal is generated by the pre-processing module according to the first driving signal, and the second driving signal is transmitted to the ultrasonic transmitting/receiving module. When the second driving signal is received, the decay signal is offset according to the second driving signal, so that a decay time of the decay signal is shortened. When the sensing wave is reflected by an object, a reflective wave is received by the ultrasonic transmitting/receiving module.
摘要翻译：在超声波换能器中使用信号衰减时间调整方法。首先，由预处理模块产生第一驱动信号。当接收到第一驱动信号时，超声波发送/接收模块产生振动并根据第一驱动信号发送感测波。然后，预处理模块停止产生第一驱动信号，使得超声波发送/接收模块内产生的振动衰减为衰减信号。然后，根据第一驱动信号由预处理模块产生第二驱动信号，并将第二驱动信号发送到超声波发送/接收模块。当接收到第二驱动信号时，衰减信号根据第二驱动信号而偏移，从而缩短衰减信号的衰减时间。当感测波被物体反射时，反射波被超声波发射/接收模块接收。

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