公开(公告)号：US20110029280A1

公开(公告)日：2011-02-03

申请号：US12847042

申请日：2010-07-30

申请人： Steef van Beckhoven ,  Mat Timmermans ,  Michel Klein Swormink

发明人： Steef van Beckhoven ,  Mat Timmermans ,  Michel Klein Swormink

IPC分类号： G01B17/00

CPC分类号： G01S7/527 ,  G01S15/102

摘要： An ultrasonic sensing method and an ultrasonic sensing device are provided. The ultrasonic sensing device includes a microprocessor, a signal-driving module and a transducer module. The microprocessor generates a first driving signal with a first frequency to the signal-driving module. The signal-driving module drives the transducer module to emit a first sensing signal to a target object in response to the first driving signal. Then, a first echo signal received by the transducer is transmitted to the microprocessor to calculate a first time of flight. In a similar manner, a second time of flight is obtained based on a second driving signal with a second frequency. The microprocessor determines a final time of flight according to the first time of flight or the second time of flight.

摘要翻译： 提供超声波感测方法和超声波感测装置。 超声波感测装置包括微处理器，信号驱动模块和换能器模块。 微处理器产生具有第一频率的第一驱动信号给信号驱动模块。 信号驱动模块响应于第一驱动信号驱动换能器模块向目标物体发射第一感测信号。 然后，由换能器接收的第一回波信号被发送到微处理器以计算第一次飞行时间。 以类似的方式，基于具有第二频率的第二驱动信号获得第二次飞行时间。 微处理器根据第一次飞行时间或第二次飞行时间确定最后的飞行时间。

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。