Abstract: A monitoring system of an elevator installation having an elevator door and a method of operating the monitoring system are suitable for generating usage data of the elevator door, the monitoring system including a sensor arranged in the elevator installation, wherein at least one physical parameter of the environment of the sensor can be detected by the sensor, and an evaluating unit, which determines an operating state of the elevator door by a course of the physical parameter over time.

Abstract: An elevator system includes a counterweight and an elevator car supported by support device and moved in opposite directions in an elevator shaft. In an operating method for operating the elevator system, the elevator car approaches the counterweight and/or moves past the counterweight in an approach zone in the elevator shaft, and the elevator car moves at a first speed outside of the approach zone and at a second speed in the approach zone, the second speed being lower than the first speed.

Abstract: A drive engine arrangement for an elevator system includes a drive engine for driving suspension traction media for displacing an elevator car, a fan for generating a fluid flow for cooling the drive engine and a fluid flow sensor. The fluid flow sensor senses the fluid flow generated by the fan. Accordingly, using the fluid flow sensor, it can be determined whether or not the fan is currently operating. By e.g. comparing the fan's behavior with previous operation patterns and/or by additionally measuring a temperature of the drive engine with a temperature sensor, it can be monitored whether the fan is operating correctly or whether e.g. cooling requirements may be compromised due to a malfunction of the fan. Such monitoring can be performed remotely and/or automatically.

Abstract: A method for generating control data for controlling an elevator system includes the steps: Projecting or depicting an image of an operating panel on an operating surface to be visually perceived by a user; Detecting a region of the surface, touched by the user, within the image by optically monitoring the surface, then detecting whether a small-area region arises within the image with a temperature deviating from the surrounding large-area regions and with a temperature equalizing with the temperature of the surrounding regions over time; Generating the control data as a function of a position of the region touched by the user relative to the image; Transmitting the generated control data to a control device of the elevator system. The method may be implemented using a portable device carried by the user and equipped with a projector and an infrared camera thereby eliminating conventional operating panels in the elevator system.

Abstract: A method and a device for determining an operating state of an elevator system include determining a current/time profile of a current supplied to the elevator system via a power supply line, identifying at least one current profile segment of the current/time profile, and deriving a current profile pattern of the identified current profile segment. The operating state of the elevator system is determined based on comparing the current profile pattern to at least one reference pattern. The method and the device may also be easily used by personnel without electrical training and may be used in elevator systems that are not known in detail.

Abstract: An elevator system has a drive, a car, a plurality of safety function components for providing safety functions at various positions, and a safety monitoring system with a plurality of safety monitoring units for monitoring all of the safety function components. The monitoring units have an input interface for reading in data or signals and an output interface for outputting control signals to an assigned member of the safety function components, at least some of the monitoring units being connected via data exchange channels. The monitoring units are organized in a master-slave hierarchy, with one unit designed as a master unit, and at least one other unit designed as a slave unit. The decentralized and distributed monitoring units, each having data processing capability, and the master-slave organization result in the elevator system exhibiting a high security level with low cabling complexity and cost expenditure, in particular for high rise elevators.

Abstract: A method and a device for detecting the presence of an object in an elevator car of an elevator system that has a control unit include a color temperature sensor. The color temperature sensor is integrated into the elevator car to acquire the color temperature of the light incident on the color temperature sensor during elevator operation, and an object present in the elevator car is detected by the control unit connected with the color temperature sensor by comparing the color temperature acquired during elevator operation with a previously acquired reference color temperature.

Abstract: A method for commissioning an elevator system, the system having a control unit, a bus, and a plurality of bus nodes, which nodes are connected with the control unit through the bus, wherein the method includes the following steps: for each bus node, node-specific data are registered by the control unit; for each bus node, the registered node-specific data are compared with a participant list; and for each deviation between the participant list and the registered node-specific data, a message is issued for an operator.

Abstract: A monitoring system of an elevator installation having an elevator door and a method of operating the monitoring system are suitable for generating usage data of the elevator door, the monitoring system including a sensor arranged in the elevator installation, wherein at least one physical parameter of the environment of the sensor can be detected by the sensor, and an evaluating unit, which determines an operating state of the elevator door by a course of the physical parameter over time.

Abstract: A hydraulic brake system for a passenger transport installation includes actuation equipment, a pump supplying brake fluid to a piston space of the actuation equipment and a motor driving the pump. A control device controls the motor by a frequency inverter whereby the pump supplies brake fluid at a predetermined delivery flow rate (QP). A pressure (pB) is set in the piston space corresponding to an equilibrium in which the delivery flow rate (QP) is equal to a return flow rate (QL). The control device sets the pressure (pB) by the delivery flow rate (QP) of the pump. The passenger transport installation can be a lift, an escalator or a moving walkway having this brake system operated according to the described method for controlling the braking force.

Abstract: An elevator installation has a first cage pair a second cage pair, both movable in an elevator shaft. Cages of a cage pair can move simultaneously in opposite directions within the shaft. In the shaft is a change zone which allows the cages of the cage pair to change between sides of the shaft while in upward or downward motion.

Abstract: An elevator installation has a first cage pair a second cage pair, both movable in an elevator shaft. Cages of a cage pair can move simultaneously in opposite directions within the shaft. In the shaft is a change zone which allows the cages of the cage pair to change between sides of the shaft while in upward or downward motion.