公开(公告)号：US20230175833A1

公开(公告)日：2023-06-08

申请号：US17993250

申请日：2022-11-23

Applicant: SICK AG

Inventor： Günter HIRT ,  Lukas HAUSER ,  Clemens HAUSER

IPC: G01B11/04

CPC classification number: G01B11/043

Abstract: A method of measuring objects that are conveyed in a conveying direction comprises the steps that

(i) a first object edge of a conveyed object is detected at a first measurement position by means of a first optoelectronic sensor,
(ii) the first object edge or a second object edge of the object is detected at a second measurement position, which is spaced apart from the first measurement position in the conveying direction, by means of a second optoelectronic sensor that is spatially resolving at least in the conveying direction,
(iii) a time difference between the detection of the first object edge at the first measurement position and the detection of the object edge detected in step (ii) at the second measurement position is determined,
(iv) a transit time is determined in which the object edge detected in step (ii) moves through a predetermined measurement path,
(v) the object speed is determined based on the transit time and a length of the measurement path, and
(vi) the length of the object is determined based on the determined time difference and the determined object speed.