Pepperl + Fuchs Gmbh

Hubner Gmbh & Co. Kg

Sick Ag

Pepperl+fuchs Se

Firma Pepperl + Fuchs Gmbh

Ernst Tabel

Lothar Scharf

Ulrich Lages

Uwe Satzky

Thorsten Schroeder

Rolf Herwig

Benedikt Rauscher

Holger Jaap

Arno Hagemann

Tobias Marschner

Torsten Olbrecht

Thorsten Schröder

Jaap Holger

Tilo Wünsche

Uwe Günther

A method for positioning an access or loading assembly against the fuselage of an aircraft during the loading or unloading process, in which at least two multichannel scanners are oriented toward the aircraft fuselage and disposed above one another at a distance from each other, each with several light emitting units and at least one detector. First, a reference position is determined by using the scanners, then a current position of the aircraft fuselage relative to the access or loading assembly is determined at determined time intervals by the multichannel scanners. The current position is compared with the reference position to determine a deviation. In case of a deviation between the two positions, a signal is transmitted to the control system of the positioning drive for realigning the access or loading assembly and reducing the deviation.

Method for positioning an access or loading assembly against the fuselage of an aircraft

The invention relates to a method for detecting objects in which a light pattern is beamed by a plurality of transmitting modules into an observation zone, the transmitting modules being spaced to each other, in which light radiated back from the observation zone is detected by at least one spatially resolving detector unit, in which a surface contour of an object located in the observation zone is determined on the basis of the detected light according to the light section principle, in which a maximum spatial resolution is caused by the intervals at which the transmitting modules are spaced from each other. The method is characterized in that in an overview measurement, a first selection of transmission modules is activated, a first spatial resolution is defined by the first selection of transmission modules, in an object measurement, a second selection of transmission modules is activated, a second spatial resolution is defined by the second selection of transmission modules or by the second selection of transmission modules together with at least a selected number of the transmission modules pertaining to the first selection, which second spatial resolution is greater than the first spatial resolution.

Method for detecting objects

The present invention relates to an optical sensor based on the transit time principle. The sensor includes a light source for the emission of emergent light pulses into an observed region, comprising a rotating device for rotating a beam direction of the emergent light pulses about a rotation axis orientated at right angles to the beam direction, comprising a detector for the detection of light pulses reflected by objects in the observed region, and comprising a control and evaluation unit for controlling the light source, for evaluating the light pulses detected by the detector, and for determining a distance away of an object on the basis of a measured transit time of the light pulses. The optical sensor is characterized in that the rotating device has a rotor and a stator and that the light source, the detector, and an electronic assembly forming part of the control and evaluating unit are disposed for joint rotation on the rotor.

Optical sensor operating on the transit time principle

The present invention relates to an optical sensor based on the transit time principle, comprising a light source for the emission of emergent light pulses into an observed region, comprising a rotating device for rotating a beam direction of the emergent light pulses about a rotation axis orientated transverse to the beam direction, and comprising a detector for the detection of light pulses reflected by objects in the observed region, comprising a housing for keeping the sensor interior separate from the environment and including a partitioning screen that is transparent to the emergent light pulses and to the reflected light pulses, comprising a test device for testing the translucence of the partitioning screen, and comprising a control and evaluation unit for controlling the light source, for evaluating the light pulses detected by the detector, and for determining the distance away of an object on the basis of the measured transit time of the light pulses, which control and evaluation unit cooperates with the test device.

The invention relates to a method for optoelectronic contactless distance or range measurement or finding according to the transit time principle, in which a distance of an object from a sensor unit is determined from a time difference between a starting signal and an echo signal, which is derived from an optical measurement pulse reflected by the object and where for determining the time difference the following steps are performed: a) by comparing the starting signal and echo signal with a digital clock a digital raw value is obtained, b) with the aid of at least two fine interpolators an initial time difference between the starting signal and the beginning of the digital raw value as well as a final time difference between the echo signal and the end of the digital raw value is determined, c) to the fine interpolators are in each case supplied analog signals corresponding to the initial time difference or final time difference, respectively, and converted into a digital initial time difference or digital final time difference, respectively. The method is characterized in that for the automatic calibration of the fine interpolators a plurality of measurements according to steps a) to c) are carried out and, assuming an equal distribution for the probability with which the values in a given value interval for the initial time difference and final time difference are measured, corrections for nonlinearities and/or drifts of the characteristics of the fine interpolators are calculated. The invention also relates to an apparatus for optoelectronic contactless distance or range measurement according to the transit time principle.

Method and apparatus for optoelectronic contactless range finding using the transit time principle

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Hamburg, Germany

Ernst Tabel