Inventio Ag

Mettler-toledo Ag

Mettler-toledo Gmbh

Daniel Scherrer

Raphael Bitzi

Steven Brossi

Mario Crevatin

André Rüegg

Markus Tuor

Benjamin Arnold

Pascal Wildbolz

A system and a method determine the position of an elevator car of an elevator installation, which elevator car is arranged movably in an elevator shaft. The system has a computing unit and an image-capturing unit that are arranged on the elevator car. The image-capturing unit records images of shaft components or shaft equipment used for other functions and transmits the images to the computing unit. The computing unit compares a currently recorded image with at least one stored comparison image of the shaft components or shaft equipment in the direction of travel of the elevator car so as to determine the current position of the elevator car in the direction of travel. The computing unit compares the currently recorded image with the stored comparison image also transversely to the direction of travel so as to determine the current position of the elevator car in the direction of travel.

System and method for determining the position of an elevator car of an elevator installation

A position-determination system for an elevator uses a camera arranged on an elevator car, which camera has a sensor with a defined number of light-sensitive pixels for generating image data of a surface structure of hoistway material arranged along a travel path of the elevator car. An analysis unit, based on the image data, determines a position and/or velocity of the elevator car. The position-determination system recognizes a reference pattern with a specified dimension which lies in a capturing range of the camera, wherein, based on the reference pattern, the analysis unit performs a scaling of the image data.

Position-determination system for an elevator

At least one of the softening point and the dropping point of a substance is determined with a measuring instrument that comprises a sample chamber (), a temperature sensor (), a heater device (), a means for providing temperature/time target values, an image-recording means () and a controller unit () with a processor unit. The heater device heats the sample chamber, the temperature sensor measures the temperature in the sample chamber, and the image-recording means captures a visual image of the interior of the sample chamber. A method using the measuring instrument has at least the steps of determining the change over time of the sample as a function of temperature based on the recorded image/time data and actual temperature/time data, and of determining the dropping- or softening point of the sample based on the observed change over time as a function of temperature.

Method of determining the softening- or dropping point

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Zurich, Switzerland

Daniel Scherrer