Vorrichtung zur Distanzmessung

Details

Veröffentlichungs-Nr.

EP2955539

Aktenzeichen

EP14172114

Anmeldetag

12. Juni 2014

Veröffentlichung

8. August 2018

Erteilung

8. August 2018

Rechtsraum

EP

IPC

G01S7/484G01S7/497

Abstract

An apparatus for determining the distance (d) from a unit (50) to an object (24) comprises means to send a pulse of light (62) from a light emitting component (60) to said object (24) bypassing a current pulse (I1) through said component (60); means to measure the current (I1) through or voltage across said light emitting component (60) and to determine the point T0 when this values achieves a pre-determined first threshold value THL1 and determining the point T1 when this values is reduced to a pre-determined second threshold value THL2; means to using the time point T1 to define two time windows; means to receive a reflected pulse of light (32) from said object (24) at said unit (50) by a light sensor (26); means to integrate a measure of the intensity of reflected light (32) in said light sensor (26) during the two time windows to provide two values (Q1/Q3 and Q2/Q4); means to determine the time of flight from the two values (Q1/Q3 and Q2/Q4), the difference between T0 and T1 (T1-T0) and the speed of light, c.

Anmelder

Firma

Delphi International Operations Luxembourg S.à r.l.

Land

🇱🇺 Luxemburg

Fachgebiete