Construction laser system with an at least partially automatically running recalibration functionality for a beam levelling functionality

摘要

A construction laser system includes a rotating laser with self-leveling and a laser receiver. The system performs a self-leveling recalibration process by which-the self-leveling is checked automatically for quality and the related calibration data is updated automatically. A sequence of N calibration measurements is defined, where N is greater than or equal to three. The calibration measurements are obtained by the rotating laser and the laser receiver with a respective azimuthal alignment of the stand while the position of the laser receiver remains unchanged. As part of each calibration measurement, one output signal dependent on the laser beam impingement position is detected. The respective output signals or specified impingement positions are evaluated in pairs correlated with the respective I-th azimuthal alignments. The quality of the beam leveling functionality is thereby checked. If the requirements are not met, the previously stored calibration data can then be updated automatically.

主权项

1. A construction laser system comprising:
a rotating laser including a laser unit and a continuously rotatable deflection means for emitting a laser beam rotating about an axis of rotation such that the rotating laser beam defines a reference area, wherein the rotating laser is equipped with a calibrated beam self-leveling functionality and, associated with the calibrated beam self-leveling functionality, the rotating laser further includes:
a leveling sensor;a mechanism for at least slightly tilting the axis of rotation relative to a stand of the rotating laser; anda memory with such calibration data relating to an interaction of the leveling sensor and the mechanism that, via the calibration data, depending on an output of the leveling sensor, the mechanism can be actuated in a defined manner and thus the axis of rotation can be tilted in a targeted manner in such a way that the rotating laser beam spans a horizontal plane; a laser receiver comprising a position-sensitive laser beam detector, which extends at least over a one-dimensional region on the laser receiver, with the result that the laser receiver is adapted to generate an output signal depending on an impingement position of the laser beam on the laser beam detector; an evaluation and control unit; and communication means for transmitting the output signal from the laser receiver to the evaluation and control unit, wherein,
an at least partially automatically running recalibration functionality for the calibrated beam self-leveling functionality is provided by the evaluation and control unit;for the recalibration functionality, a sequence of N calibration measurements is defined, where N is greater than or equal to three, which calibration measurements are implemented by the rotating laser and the laser receiver with a respective I-th azimuthal alignment of the stand, where I is continuously from one to N, and with an in-the-process unchanged position of the laser receiver;as part of the recalibration functionality:
for every I-th of the N calibration measurements, automatically controlled by the evaluation and control unit:
the rotating laser, using the beam leveling functionality, emits the rotating laser beam; andin an output signal reception mode, an output signal incoming via the communication means is detected by the evaluation and control unit and is stored as the I-th output signal; andthe evaluation and control unit automatically:
reads the corresponding I-th impingement positions from the respective I-th output signals;evaluates these impingement positions in pairs correlated with the respective I-th azimuthal alignments; andon the basis of this, checks and possibly updates the stored calibration data.