公开(公告)号：US09377532B2

公开(公告)日：2016-06-28

申请号：US14100319

申请日：2013-12-09

申请人： ESPROS Photonics AG

发明人： Dieter Huber ,  Markus Ledergerber

IPC分类号： G01C3/08 ,  G01S17/08 ,  G01S7/486

CPC分类号： G01S17/08 ,  G01S7/4865

摘要： A TOF distance sensor is proposed, for measuring a distance from an object, comprising an electronics apparatus for generating a modulation signal and for generating four correlation signals, which are phase shifted with respect to one another and which have the same period as the modulation signal; a radiation source for emitting radiation, which is modulated by the modulation signal; a reception apparatus, which has a predetermined spatial relationship with respect to the radiation source, for receiving radiation reflected by the object; a correlation apparatus for correlating the received radiation or a corresponding variable with respectively one of the four correlation signals in order to form four corresponding correlation values; a difference-forming apparatus for forming two difference correlation values from the difference between respectively two of the correlation values; a calculation apparatus embodied to calculate the distance with a predetermined linear dependence on the two difference correlation values.

摘要翻译： 提出了一种用于测量距离物体的距离的TOF距离传感器，包括用于产生调制信号并产生四个相关信号的电子设备，它们相对于彼此相移并且具有与调制信号相同的周期 ; 用于发射由调制信号调制的辐射的辐射源; 接收装置，其相对于所述辐射源具有预定的空间关系，用于接收由所述物体反射的辐射; 相关装置，用于将接收到的辐射或相应变量分别与四个相关信号中的一个相关，以形成四个对应的相关值; 差分形成装置，用于根据相应的两个相关值之间的差异形成两个差分相关值; 一种计算装置，体现为以两个差分相关值以预定的线性依赖性计算距离。