公开(公告)号：US20150362586A1

公开(公告)日：2015-12-17

申请号：US14735418

申请日：2015-06-10

Applicant: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L.

Inventor： MARKUS HEINRICH

IPC: G01S7/486 ,  G01S17/08

CPC classification number: G01S7/4865 ,  G01S7/484 ,  G01S7/497 ,  G01S17/08 ,  G01S17/10

Abstract: An apparatus and method for determining the distance from a distance-measuring-device to an object by sending a light-pulse from a light-emitting component toward the object by passing a current pulse through the component. A value based on the current or voltage across the component is used to determine the reference-time T0 when the value exceeds a first threshold-value, and determines first-time T1 when the value is reduced to a second threshold-value THL2. T1 is used to define two time-windows when intensity of reflected light is integrated to provide two values (Q1/Q3 and Q2/Q4) to determine a time of flight for the light-pulse based on the two values (Q1/Q3 and Q2/Q4), the difference between T0 and T1 (T1-T0), and the speed of light, c.

Abstract translation: 一种用于通过使电流脉冲通过该部件，通过从发光部件朝向物体发送光脉冲来确定从距离测量装置到物体的距离的装置和方法。 当该值超过第一阈值时，使用基于组件上的电流或电压的值来确定参考时间T0，并且当该值减小到第二阈值THL2时确定第一时间T1。 T1用于定义两个时间窗口，当反射光的强度被积分以提供两个值（Q1 / Q3和Q2 / Q4），以根据两个值（Q1 / Q3和Q2）确定光脉冲的飞行时间 Q2 / Q4），T0和T1（T1-T0）之间的差值和光速c。