The invention relates to a method for verifying speed data of an elevator car for overspeed monitoring of the elevator car. The method comprising obtaining at least one continuous speed data of the elevator car at two channels; obtaining a zone speed data of the elevator car within at least one zone of an elevator shaft at two channels, generating a two-channel verified speed information by comparing the said at least one continuous speed data to the zone speed data at least at one channel; generating a control signal, if the comparison indicates a mismatch at least at one channel; and if the comparison indicates a match at each of the at least one channel in which the comparison is provided; the method further comprising comparing the verified speed information at each channel between each other; and generating the control signal, if the reciprocal comparison indicates a mismatch. The invention also relates to a safety control unit and an elevator system performing at least partly the method.

An elevator system has a central control unit for generating control signals and/or processing sensor signals and controlling functions of the system, a plurality of field devices distributed inside a structure accommodating the system, preferably along an elevator shaft, and a field bus system for interchanging the signals between the control unit and the field devices. Each field device outputs sensor signals generated by a sensor and/or receives control signals to be implemented by an actuator. Data packets including the signals are interchanged in a serial manner between the control unit and all field devices in a summation frame method using a closed ring topology. Each field device has a driver to insert the sensor signals into the data packet or to remove the control signals from the data packet. Data and signal transmission is thereby carried out quickly and safely in a safety circuit of the elevator system.

The invention relates to a method for transporting construction material and/or equipment into and inside a building under construction, wherein the building under construction comprises plurality of vertically displaced floors, the method comprising providing a control system configured to automatically operate one or more transporting devices, including at least an elevator; providing a storage at the construction site of the building; and transporting into the storage at the construction site of the building under construction plurality of transport containers containing construction material and/or equipment; storing said transport containers in the storage; and delivering transport containers belonging to said plurality of transport containers from said storage to different destination floors, the delivering comprising obtaining an order to deliver a transport container, the order identifying the transport container to be delivered; and retrieving the transport container identified in the order from the storage; and moving said transport container at least horizontally to a container loading floor of the building under construction; and loading said transport container on the load receiving unit for being moved to its destination floor; and obtaining the destination floor information indicating the destination floor of said container; and moving the load receiving unit vertically in the elevator shaft to the destination floor of said transport container; and unloading said transport container from the load receiving unit to the destination floor of said transport container. The invention also relates to a method for constructing a building and an arrangement for transporting construction material, which implement the method for transporting construction material and/or equipment into and inside a building under construction.

An elevator renewal construction method includes a series of divided construction work steps, each being determined as such a unit that the elevator operation becomes normally possible after finishing of each of the divided construction work steps, wherein one of the series of the divided construction work steps comprises the steps of: replacing an old control panel of the existing elevator with a new control panel; connecting an old cable for an old car device, which has connected the old car device and the old control panel of the existing elevator to each other, to a communication conversion unit provided in the new control panel; and converting a new serial communication system to an old serial communication system by the new control panel via the communication conversion unit and the old cable to control the old car device through the old serial communication system.

A control system for an elevator is separated into a first assembly allocated outside and a second assembly allocated inside an elevator shaft. The first assembly includes a power switch for turning on/off the control system, a light switch for switching a light inside the shaft, a safety unit for protecting electrical safety of the control system, a communication unit for data communication with the elevator and/or an external communication device, and a bypass device for bypassing a safety chain of the elevator. The second assembly includes a power supply system for driving the elevator and/or for the safety chain, a monitoring system for monitoring the safety chain, a drive control unit for a drive motor, and a processor for data processing of the control system. The first assembly and the second assembly can communicate with each other and be connected respectively as segments into the safety chain.

An elevator control apparatus improves car position detection accuracy without increasing the number of sensors. A position detection sensor installed on a caroutputs a detection signal when an object installed in a hoistway is detected. A controller corrects a position of the car calculated on the basis of a pulse signal that an encoder which rotates in accordance with ascending and descending of the car outputs, in accordance with a position of the object to be detected. A storage device stores data on the position of the car calculated prior to a time point when the detection signal is received. A correction amount of the position of the car is calculated on the basis of a communication delay time and the data which is stored in the storage device, and the position of the car is corrected in accordance with the correction amount.

An illustrative example embodiment of a device for communicating information regarding an elevator car that moves along a vertical path includes at least one sensing portion configured to be supported on the elevator car and to sense at least one characteristic of the elevator car. A transmitter is configured to transmit a wirelessly communicated output indicating at least one condition based on the sensed characteristic. The transmitter is configured to use a first transmit power when the device is at a first location along the vertical path and to use a second, different transmit power when the device is at a second, different location along the vertical path.

According to an aspect, there is provided a method for setting up an elevator safety system, the elevator safety system comprising an elevator system component, an actuator for causing a change in the status of the elevator system component, a data bus, a safety controller configured to communicate via the data bus, a sensor configured to indicate a change in the status of the elevator system component, and an elevator system node associated with the sensor configured to communicate via the data bus, wherein the elevator system node is configured to communicate a change in the status of the elevator system component to the safety controller via the data bus. The method comprises causing, by the actuator, a change in the status of the elevator system component; detecting, with the sensor, a change in the status of the elevator system component; communicating with the elevator system node the changed status to the safety controller via the data bus; and linking, in a memory of the safety controller, an address associated with the elevator system node with an identifier of the elevator system component.

According to an aspect, there is provided an elevator communication system. The system comprises an elevator controller, a multi-drop ethernet bus segment reachable by the elevator controller, and a plurality of elevator system nodes connected to the at least one multi-drop ethernet bus segment configured to communicate via the multi-drop ethernet bus, wherein the elevator controller is reachable by the elevator system nodes via the multi-drop ethernet bus segment.

According to an aspect, there is provided an elevator communication system. The system comprises an ethernet bus; a controller communicatively connected to the ethernet bus and being configured to communicate via the ethernet bus; a plurality of elevator system nodes communicatively connected to the ethernet bus and being configured to communicate via the ethernet bus, wherein each elevator system node is associated with a respective landing; a landing bus segment at each landing, the landing bus segment being connected to the elevator system node associated with the landing; landings nodes at each landing connected to a respective landing bus segment. Each elevator system node of the plurality of elevator system nodes is provided with a connecting unit to enable communication between the ethernet bus and the respective landing bus segment.