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发明公开
CN108205140A 检测物体的方法以及相应装置 审中-实审

检测物体的方法以及相应装置
摘要：
一种例如借助于压电式换能器检测物体的方法，该方法包括将包括多组脉冲的声信号(TW)发射朝向物体(O)以感应由于这些声信号在该物体处的反射而造成的回波信号(EW)，其中，这些回波信号的时间延迟指示到该物体的距离(D)。该方法包括：发射包括第一组脉冲的第一声信号，该第一组脉冲包括第一数量的脉冲；以及检验是否接收到由于该第一声信号的反射而造成的具有达到回波检测阈值的强度的第一回波信号。如果该第一回波信号的强度达到该回波检测阈值，则根据该第一回波信号的时间延迟来计算到该物体的距离。如果该第一回波信号的强度无法达到该回波检测阈值，则发射包括一组脉冲的一个或多个另外的声信号，其中，脉冲的数量相对于该第一声信号中的脉冲数量而增加。
摘要（英）：

A method of detecting objects, e.g. by means of piezoelectric transducers, includes transmitting acoustic signals (TW) including sets of pulses towards an object (0) to induce echo signals (EW) resulting from reflection of the acoustic signals at the object, wherein the time delay of the echo signals is indicative of the distance (D) to the object. The method includes transmitting a first acoustic signal including a first set of pulses including a first number of pulses, and checking if a first echo signal resulting from reflection of the first acoustic signal is received with an intensity reaching an echo detection threshold. If the intensity of the first echo signal reaches the echo detection threshold, the distance to the object is calculated as a function of the time delay of the first echo signal. If the intensity of the first echo signal fails to reach the echo detection threshold, one or more further acoustic signals are transmitted including a set of pulses wherein the number of pulses is increased with respect to the number of pulses in said first acoustic signal.

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