Abstract: A method for training an operator of a spray drying plant, the spray drying plant including a plurality of plant elements including pre-processing elements, a spray drying element, post-processing elements, powder recovery elements, and a programmable logic controller, PLC. The method including the steps of: obtaining a transient model of the spray drying plant, wherein the transient model includes transient sub-models of the plurality of plant elements; calculating repeatedly simulated sensor data based on the obtained transient model, using a processing unit; displaying on a display a training human machine interface, tHMI, configured to communicate with the transient model of the spray drying plant, and to display the simulated sensor data and control data for the transient model; and updating the transient model based on operator input on the tHMI, for controlling the transient model of the spray drying plant.

Abstract: The present disclosure provides for a drivetrain arrangement for a drive unit of an elevator system. The drive unit includes at least one belt drive, with a shaft mounted in a housing in a fixed bearing and in a movable bearing. The fixed bearing can be/become secured in an axially fixed manner on the shaft without a bearing cover in several circumferential positions in each case via at least one disc interacting with the housing. A reservoir is configured between the bearings and a brake unit to receive bearing grease. An inner diameter of the fixed bearing is smaller than or greater than an inner diameter of the movable bearing such that in the axial assembly direction, the bearing with the larger inner diameter can be brought over the shaft portion intended for the bearing with the smaller inner diameter. This simplifies the assembly and implementation of the drive.

Abstract: An optical surveying instrument is provided with an optical arrangement that includes at least one lens and the viewing element defining a viewing direction in the field of view. The distance measurement unit emits light beam towards the field of view and measured the distance to an object in the field of view based on a reflection of the light beam from the object. A movable mirror is arranged to direct the light beam towards the object and a mirror control unit is provided for reading calibration values from a calibration value memory and for moving the movable mirror using the calibration values to adjust the direction of the light beam to be aligned with the viewing direction.

Abstract: A method for coating objects starts with dispensing, by means of a first painting system, a first coating layer on a first object. A property of the first coating layer is measured to thereby obtain a first property value, and a coating variable of a second painting system is adjusted based on the first property value. A second coating layer is dispensed on the first coating layer by means of the second painting system which is different from the first painting system. By providing a measurement between the two painting systems, and by adjusting the coating parameters of the downstream painting system based on the measurement results, the overall coating can be corrected by compensating by means of the downstream painting system for a defective coating dispensed by the upstream painting system.

Abstract: A method for inspection of a target object, the method including irradiating a reference surface having a non-flat reference profile with radiation; determining reference response data based on detected radiation having interacted with the reference surface; irradiating a target object with radiation, the target object including a target surface having a non-flat target profile corresponding to the reference profile; determining inspection response data based on detected radiation having interacted with the target object; and determining at least one parameter of the target object based on the reference response data and the inspection response data. An alternative method; a control system for controlling an emitter system and a detector system; and an inspection system including a control system, an emitter system and a detector system, are also provided.

Abstract: An example loudspeaker arrangement includes a seat configured to support a listener sitting in the seat so that a head of the listener is in a listening position; and a loudspeaker array secured to the seat and disposed in a position in front of a backrest of the seat and to the side of the head when the head is in the listening position. The loudspeaker array includes at least one loudspeaker and has a main broadcasting axis representative of a main broadcasting direction, the main broadcasting direction of the loudspeaker array pointing to the head.

Abstract: A method for training an operator of a spray drying plant, the spray drying plant including a plurality of plant elements including pre-processing elements, a spray drying element, post-processing elements, powder recovery elements, and a programmable logic controller, PLC. The method including the steps of: obtaining a transient model of the spray drying plant, wherein the transient model includes transient sub-models of the plurality of plant elements; calculating repeatedly simulated sensor data based on the obtained transient model, using a processing unit; displaying on a display a training human machine interface, tHMI, configured to communicate with the transient model of the spray drying plant, and to display the simulated sensor data and control data for the transient model; and updating the transient model based on operator input on the tHMI, for controlling the transient model of the spray drying plant.

Abstract: The invention relates to optical surveying such as in building construction, road construction, landscaping and similar. A first image sensor obtains in a first wavelength range a first image of a scene within a field of view captured by an optical arrangement such as a telescope. A light emitter emits light in a second wavelength range and a second image sensor obtains a second image of the field of view in the second wavelength range. A target position of a reflecting target is found in the first image by detecting a known image pattern of the reflecting target in the first image. A region of interest in the second image is then a defined based on the identified target position in the first image, for detecting a reflector position of a reflector of the reflecting target in the region of interest. With the invention it becomes possible to improve the identification of a reflective target at reduced processing time, even if reflections from other objects than the reflective target are present.

Abstract: A method for coating objects starts with dispensing, by means of a first painting system, a first coating layer on a first object. A property of the first coating layer is measured to thereby obtain a first property value, and a coating variable of a second painting system is adjusted based on the first property value. A second coating layer is dispensed on the first coating layer by means of the second painting system which is different from the first painting system. By providing a measurement between the two painting systems, and by adjusting the coating parameters of the downstream painting system based on the measurement results, the overall coating can be corrected by compensating by means of the downstream painting system for a defective coating dispensed by the upstream painting system.

Abstract: In order to carry out the polarimetric detection of a measurand, light of two polarization states is passed through a sensing element, where the two states suffer a differential phase shift depending on the value of the measurand. In order to compensate for only imperfections of the device, a method is proposed that is based on calibration values obtained in a low-value regime of the measurand only. Yet the method can still be used for accurately determining higher values of the measurand.

Abstract: An optical surveying instrument is provided with an optical arrangement that includes at least one lens and the viewing element defining a viewing direction in the field of view. The distance measurement unit emits light beam towards the field of view and measured the distance to an object in the field of view based on a reflection of the light beam from the object. A movable mirror is arranged to direct the light beam towards the object and a mirror control unit is provided for reading calibration values from a calibration value memory and for moving the movable mirror using the calibration values to adjust the direction of the light beam to be aligned with the viewing direction.

Abstract: The optical interferometric sensor device comprises an integrated beam splitter having a first facet and a second facet with optical ports arranged therein. On the beam splitter, the beam splitting junctions as well as the optoelectronics-side ports and the sensing-side port are arranged with a mutual displacement along the direction of the first facet. This displacement reduces undesired interference effects caused by stray light. Also, a quarter-wave retarder is provided in a recess of the beam splitter with layers of soft adhesive adjacent to it in order to reduce stress.

Abstract: A method for inspection of a target object, the method including irradiating a reference surface having a non-flat reference profile with radiation; determining reference response data based on detected radiation having interacted with the reference surface; irradiating a target object with radiation, the target object including a target surface having a non-flat target profile corresponding to the reference profile; determining inspection response data based on detected radiation having interacted with the target object; and determining at least one parameter of the target object based on the reference response data and the inspection response data. An alternative method; a control system for controlling an emitter system and a detector system; and an inspection system including a control system, an emitter system and a detector system, are also provided.

Abstract: The invention relates to optical surveying such as in building construction, road construction, landscaping and similar. A first image sensor obtains in a first wavelength range a first image of a scene within a field of view captured by an optical arrangement such as a telescope. A light emitter emits light in a second wavelength range and a second image sensor obtains a second image of the field of view in the second wavelength range. A target position of a reflecting target is found in the first image by detecting a known image pattern of the reflecting target in the first image. A region of interest in the second image is then a defined based on the identified target position in the first image, for detecting a reflector position of a reflector of the reflecting target in the region of interest. With the invention it becomes possible to improve the identification of a reflective target at reduced processing time, even if reflections from other objects than the reflective target are present.

Abstract: In order to carry out the polarimetric detection of a measurand, light of two polarization states is passed through a sensing element, where the two states suffer a differential phase shift depending on the value of the measurand. In order to compensate for only imperfections of the device, a method is proposed that is based on calibration values obtained in a low-value regime of the measurand only. Yet the method can still be used for accurately determining higher values of the measurand.

Abstract: A fiber optic sensor and related method are described, with the sensor including a cross-coupling element in the optical path between a polarizing element and a sensing element, but separated from the sensing element itself; with the cross-coupling element generating a defined cross-coupling between the two orthogonal polarization states of the fundamental mode of a polarization maintaining fiber guiding light from the light source to the sensing element thus introducing a wavelength-dependent or temperature-dependent sensor signal shift to balance wavelength-dependent or temperature-dependent signal shifts due to other elements of the sensor, particularly signal shifts due to the wavelength dependence of the Faraday effect or the electro-optic effect constant.

Abstract: A method for producing a rotor cup for an open-end spinning rotor includes forming separating structures on a front-side rim of the rotor cup for breaking up and preparing a yarn end for piecing. The separating structures are formed by a non-mechanical manufacturing method without contact between the front-side rim and a mechanical forming tool. A rotor cup formed in accordance with the method is also provided.

Abstract: An interferometric sensor and related methods are provided, with a sensing element whereby a measurand induces a relative phase shift between two waves, at least one detector measuring an interference signal between the two waves, and further including a phase shift detection unit having as input the interference signal and determining a first measure representative of the principal value of the relative phase shift, and a contrast detection unit having as input the interference signal for determining a second measure representative of the cross-correlation between the two waves, and a further a processing unit for converting the first and second measures to a measurand value.

Abstract: A thread guide unit is used for drawing off a thread out of a rotor of a spinning unit of an open-end spinning machine. The thread guide unit includes a draw-off tube, and a compressed air nozzle configured with the draw-off tube. A thread outlet element extends into the draw-off tube. The compressed air nozzle includes a mouth formed as a gap between an inner diameter surface of the draw-off tube and the thread outlet element. A method for operating a spinning unit of an open-end spinning machine having the thread guide unit is also provided.

Abstract: An example loudspeaker arrangement includes a seat configured to support a listener sitting in the seat so that a head of the listener is in a listening position; and a loudspeaker array secured to the seat and disposed in a position in front of a backrest of the seat and to the side of the head when the head is in the listening position. The loudspeaker array includes at least one loudspeaker and has a main broadcasting axis representative of a main broadcasting direction, the main broadcasting direction of the loudspeaker array pointing to the head.