US 11,953,322 B2Granted

Method for checking and/or calibrating a horizontal axis of a rotating laser

AssigneeHilti Aktiengesellschaft

InventorsIvan Sojic, Monica Arzani

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Abstract

A method for checking and/or calibrating a horizontal axis of a rotating laser using a laser receiver and a controller device which is communicatively connected to the rotating laser and the laser receiver where the rotating laser emits a laser beam rotating about an axis of rotation in a laser plane. An inclination angle is ascertained using a first fitting function and a second fitting function where the inclination angle is used for the checking and/or the calibrating of the horizontal axis.

Claims6

Dependent claims

A method for checking and/or calibrating a horizontal axis (51, 52) of a rotating laser (11) using a laser receiver (12) and a controller device (81, 88), which is communicatively connected to the rotating laser (11) and the laser receiver (12), wherein the rotating laser (11) emits a laser beam (22) rotating about an axis of rotation (21) in a laser plane (38), comprising the steps of:

orienting the rotating laser (11) in a horizontal position and orienting the laser receiver (12) in a longitudinal arrangement;
arranging the rotating laser (11) in a first angular position, wherein the horizontal axis (51, 52) in the first angular position is oriented substantially perpendicularly to a detection field (18) of the laser receiver (12);
wherein the rotating laser (11) is inclined by a first inclination angle (a) and wherein at least two different angle values (a1, a2, a3) are set for the first inclination angle (a);
wherein for each angle value (a1, a2, a3) that is set for the first inclination angle (a), a position of incidence of an inclined laser beam (22) of the rotating laser (11) on the detection field (18) is determined by the laser receiver (12) as a first control point (A1, A2, A3) and a first distance of the first control point (A1, A2, A3) from a zero position (19) of the detection field (18) is stored as a first distance (a1, a2, a3);
arranging the rotating laser (11) in a second angular position, wherein the second angular position is rotated relative to the first angular position through 180° about the axis of rotation (21);
wherein the rotating laser (11) is inclined by a second inclination angle (b) and wherein at least two different angle values (b1, b2, b3) are set for the second inclination angle (b);
wherein for each angle value (b1, b2, b3) that is set for the second inclination angle (b), a position of incidence of the inclined laser beam (22) of the rotating laser (11) on the detection field (18) is determined by the laser receiver (12) as a second control point (B1, B2, B3) and a second distance of the second control point (B1, B2, B3) from the zero position (19) of the detection field (18) is stored as a second distance (b1, b2, b3);
determining a first fitting function (f1), which depicts a first relationship between the first inclination angle (a1, a2, a3) of the rotating laser (11) and the first distance (a1, a2, a3) in the first angular position, and a second fitting function (f2), which depicts a second relationship between the second inclination angle (b1, b2, b3) of the rotating laser (11) and the second distance (b1, b2, b3) in the second angular position;
and
ascertaining an inclination angle (u) using the first fitting function (f1) and the second fitting function (f2), wherein the inclination angle (u) is used for the checking and/or the calibrating of the horizontal axis (51, 52).

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Dependencies are inferred from the claim text.

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Abstract

orienting the rotating laser (11) in a horizontal position and orienting the laser receiver (12) in a longitudinal arrangement;
arranging the rotating laser (11) in a first angular position, wherein the horizontal axis (51, 52) in the first angular position is oriented substantially perpendicularly to a detection field (18) of the laser receiver (12);
wherein the rotating laser (11) is inclined by a first inclination angle (a) and wherein at least two different angle values (a1, a2, a3) are set for the first inclination angle (a);
wherein for each angle value (a1, a2, a3) that is set for the first inclination angle (a), a position of incidence of an inclined laser beam (22) of the rotating laser (11) on the detection field (18) is determined by the laser receiver (12) as a first control point (A1, A2, A3) and a first distance of the first control point (A1, A2, A3) from a zero position (19) of the detection field (18) is stored as a first distance (a1, a2, a3);
arranging the rotating laser (11) in a second angular position, wherein the second angular position is rotated relative to the first angular position through 180° about the axis of rotation (21);
wherein the rotating laser (11) is inclined by a second inclination angle (b) and wherein at least two different angle values (b1, b2, b3) are set for the second inclination angle (b);
wherein for each angle value (b1, b2, b3) that is set for the second inclination angle (b), a position of incidence of the inclined laser beam (22) of the rotating laser (11) on the detection field (18) is determined by the laser receiver (12) as a second control point (B1, B2, B3) and a second distance of the second control point (B1, B2, B3) from the zero position (19) of the detection field (18) is stored as a second distance (b1, b2, b3);
determining a first fitting function (f1), which depicts a first relationship between the first inclination angle (a1, a2, a3) of the rotating laser (11) and the first distance (a1, a2, a3) in the first angular position, and a second fitting function (f2), which depicts a second relationship between the second inclination angle (b1, b2, b3) of the rotating laser (11) and the second distance (b1, b2, b3) in the second angular position;
and
ascertaining an inclination angle (u) using the first fitting function (f1) and the second fitting function (f2), wherein the inclination angle (u) is used for the checking and/or the calibrating of the horizontal axis (51, 52).

7 more elements