Abstract: The invention relates to a method for operating a position measurement apparatus, wherein the method comprises: a measurement signal being received from the position measurement apparatus; a measurement noise signal being estimated based on the measurement signal; a first variance estimation and a second variance estimation different from the first variance estimation being performed based on the measurement noise signal, wherein the first variance estimation yields a first variance estimated value and the second variance estimation yields a second variance estimated value; a final variance estimated value being determined based on a comparison of the first variance estimated value with the second variance estimated value; and a confidence interval being determined based on the final variance estimated value, wherein the confidence interval is output and is preferably used in a safety function.

Abstract: A safety system (1) and a method using a safety system (1) for localizing at least one spatially variable object (2) having at least one first real time control and evaluation unit (3), having at least one radio location system (4), wherein the radio location system (4 has at least three arranged radio stations (5); wherein at least one radio transponder (6) is arranged at the object (2); wherein the radio transponder (6) has a check unit (8); wherein the radio transponder (6) has safe switch outputs (9); wherein position data of the radio transponder and thus position data of the object (2) are determined by means of the radio location system (4); wherein the position data are transmitted to the first real time control and evaluation unit (3) by the radio stations (5) of the radio location system (4); wherein the first real time control and evaluation unit (3) is configured to cyclically detect the position data of the radio transponder (6); wherein a second real time control and evaluation unit (7) is provi

Abstract: A laser scanner having a plurality of light transmitters, a plurality of light receivers and a control and evaluation unit, wherein a plurality of light transmitters and a plurality of light receivers are respectively arranged in the form of a segment of a circle, in arcuate form, or along a curved line in a common housing, wherein the light beams are transmitted and received in the manner of a fan in different angular directions through a convex front screen at an outer side of the housing, wherein the distances of the transmitted light beams of the light transmitters increase as the distance from the laser scanner increases and/or the distances of the received light beams of the light receivers decrease as the distance from the laser scanner decreases and wherein the light receivers are configured to respectively form a linear reception zone.