The present invention relates to a control device for pressure control in a hydraulic system, especially of an elevator-system, the control device is adapted to control an output variable of an inverter supplying a hydraulic pump of the hydraulic system with electric energy, the output variable is adapted to adjust the speed of the hydraulic pump in order to at least partly compensate for a leakage of operating fluid in the hydraulic pump. Further, the invention relates to an elevator-system that includes a hydraulic pump, an inverter, and a control device which controls a supply of the hydraulic pump with electric energy from the inverter. Moreover, the invention relates to a method for pressure control in a hydraulic system, especially of an elevator-system, the method that includes the steps of supplying a hydraulic pump of the hydraulic system with electric energy from an inverter, controlling at least one output variable of the inverter for adjusting the speed of the hydraulic pump, in order to at least partly compensate for a leakage of operating fluid in the hydraulic pump. For providing an inexpensive elevating solution with good right quality for hydraulic elevators, the present invention provides that the control device includes a computing module which is adapted to determine the output variable based on at least one inverter parameter.

A method for generating a control signal to a conveyor system, the conveyor system configured to serve at least a plurality of robots, includes receiving, in a control entity, a service call for a first robot, the service call being associated with a priority of the first robot; determining, by the control entity, the priority of the first robot; and generating, by the control entity, a control signal to the conveyor system to serve the service call for the first robot in accordance with the determined priority of the first robot. A control entity, a robot and a system are also provided.

The present disclosure relates to a method for operating an elevator system, which is embodied as shaft-changing multi-car system. A number of cars is assigned to at least three elevator shafts. The cars can be moved in upwards direction and downwards direction inside the individual elevator shafts, as well as between the individual elevator shafts. A successive reversal of the travel directions of the respective cars occurs hereby.

An elevator control system for an elevator system, including a display device, at least one processor in communication with the display device and the elevator system, the at least one processor programmed or configured to render, on the display device, a graphical destination interface comprising a plurality of visual representations of destinations within the building, receive a user selection of a selected destination from the plurality of destinations, determine a plurality of selectable options for elevator call requests based on the selected destination, render the plurality of selectable options for elevator call requests on the graphical destination interface or a second graphical call request interface, receive a user selection of a selected option from the plurality of selectable options for elevator call requests, and control movement of an elevator car in the elevator system based on the selected destination and the selected option.

An elevator security system for a building includes data relating to a floor that a user may access in the building, a device in which the data is stored, a credential containing the data in a machine readable format and created by the user, and a first machine reader reading the credential and sending data therein to the device for querying whether the user may access the floor, the device allowing access to an elevator car for transport to the floor if the credential is in sync with the data stored in the device.

A lift system for moving a car along a track in a guided manner. The lift system having a guide rail system, a car and a drive unit arranged on the car. The guide rail system forms a closed track along which the car can be moved between floors when in operation. The drive unit has a motor, a gear wheel system connected to the motor by a shaft and a guide disk. The guide rail system has a pinion system and guide edges spaced apart from one another, which cooperate with the guide disk. When in operation, the motor drives the gear wheel system and the gear wheel system acts on the pinion system in order to move the car along the track in a guided manner.

A method of wear detection of a coated belt or rope includes connecting a wear detection unit to one or more monitoring strands and/or cords of a coated belt or rope. The coated belt or rope includes one or more baseline strands and/or cords exhibiting a first change in electrical resistance as a function of bending cycles of the belt or rope and one or more monitoring strands and/or cords exhibiting a second change in electrical resistance as a function of bending cycles of the belt or rope, greater than the first change in electrical resistance. An electrical resistance of the one or more monitoring strands and/or cords is measured via the wear detection unit. Using at least the measured electrical resistance of the one or more monitoring strands and/or cords, a wear condition of the belt or rope is determined.

A method of wear detection of a coated belt or rope includes connecting a wear detection unit to one or more monitoring strands and/or cords of a coated belt or rope. The coated belt or rope includes one or more baseline strands and/or cords exhibiting a first change in electrical resistance as a function of bending cycles of the belt or rope and one or more monitoring strands and/or cords exhibiting a second change in electrical resistance as a function of bending cycles of the belt or rope, greater than the first change in electrical resistance. An electrical resistance of the one or more monitoring strands and/or cords is measured via the wear detection unit. Using at least the measured electrical resistance of the one or more monitoring strands and/or cords, a wear condition of the belt or rope is determined.

A method for operating an elevator system, which may include at least two cars that can move independently of one another within a common elevator shaft, may involve determining with an elevator controller to cause a first car of the at least two cars to perform a transportation process from a start stopping point to a destination stopping point. The elevator controller may determine a starting time and travel parameters according to which the first car carries out the transportation process from the start stopping point to the destination stopping point. The starting time and the travel parameters may be determined by taking into account state parameters of a second car of the at least two cars.

An elevator system is provided. Aspects includes an elevator car, a sensor affixed to the elevator car, wherein the sensor is operated by a controller, the controller is configured to receive occupancy data associated with the elevator car. The occupancy data is analyzed to determine an occupancy of the elevator car. A first hall call is received and based at least in part on the occupancy and the first hall call, adjusting operation of the elevator car in the elevator system.