Patent ID: 11906284
Assignee: BALLUFF GMBH
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. Method for detecting (48) an edge (21) of an object (20) by means of a detection device (10) comprising a micro controller for compiling a signal course and storing signals to determine a threshold value edge point of the object, an emission region (11) running along a first straight line (G1) and a receiving region (13) running along a second straight line (G2) in a plane arranged parallel to the first straight line (G1) in a plane, wherein, the emission region (11) includes a plurality of emission subregions (11a-p, 11A-O) each emission subregion including at least one light source;
wherein, the receiving region (13) includes a plurality of receiving subregions (13a-p, 13A-0);
the method comprising:
a) selecting (41) an emission subregion (11a-p, 11A-O) of the emission region (11), wherein the selected emission subregion (11a-p, 11A-O) has a length along the first straight line (G1) and extends up to a first end of the emission region (11);
b) forming a common sector by selecting a receiving subregion (13a-p, 13A-O) adjacent and parallel to the selected emission subregion (11a-p, 11A-O), wherein the selected receiving subregion (13a-p, 13A-O) has a length along the second straight line (G2) equal to the length of the emission subregion (11a-p, 11A-0) along the first straight line (G1),
c) emitting (42) light (30) from the selected emission subregion (11a-p, 11A-O),
d) receiving (43) a light signal (I) of light (30) reflected on the object (20) only in the selected receiving subregion (13a-p, 13A-O) and storing the light signal,
e) shifting (45) the selected emission subregion (11a-p, 11A-O) along the first straight line (G1) in the direction of a second end of the emission region (11) and shifting (46) the selected receiving subregion (13a-p, 13A-O) along the second straight line (G2) from a first end in the direction of a second end of the second straight line (G2), wherein when the shifted selected emission subregion is activated, the shifted selected receiving subregion in the common sector is simultaneously activated,
f) repeating steps c to e until the emission subregion (11a-p, 11A-O) extends up to the second end at the start of step e,
g) compiling (47) a signal course from the light signals (I) received in step d, and
h) carrying out the detection (48) of the edge (21) from the signal course.