According to an aspect, there is provided a method for controlling an elevator system. The method comprises causing transmission of radio frequency signals with at least one radio frequency sensor attached to at least one element movable in an elevator shaft of an elevator system, receiving, from the at least one radio frequency sensor measurement data representing radio frequency signals reflected from at least one object and captured with the at least one radio frequency sensor, causing identification, based on the measurement data, of at least one object; and controlling operation of the elevator system in response to identifying the at least one object based on the measurement data.

Elevator safety and safety related information needs to be sent reliably to safety controlling systems. Existing elevator communication devices may be used for transmitting this information by processing the received safety and safety related information and processing it before sending it over the communication bus from the elevator car or floor equipment to the controlling devices. A separate communication unit may be used for receiving and processing safety and safety related data packets before they are transmitted over a common bus used for safety and safety non-critical submission.

A communication system includes a host node and a plurality of network nodes. The host node has a processor, a non-transitory computer memory, a host receiver, and a host output select line. Each of the plurality of network nodes has an input select line, an output select line, and a tri-state transceiver. The host node and the plurality of network nodes are daisy chained such that the input select line of one of the plurality of network nodes is coupled to the output select line of the preceding node. The tri-state transceiver of each of the plurality of network nodes is activated when the input select line of that node receives a token from the output select line of the preceding node.

The invention relates to a method of providing a seamless wireless connection in an elevator system of a building. The method comprises receiving an elevator car request from a passenger who is on a source floor, dispatching an elevator car to the source floor in response to the elevator car request, selecting at least one wireless local area network (WLAN) established in the building, and forwarding the selected at least one WLAN via a network node placed in at least one of an elevator hall of the source floor, the dispatched elevator car, or an elevator hall of a destination floor.

An elevator device includes an operation control unit (18), a storage unit (22), a transmission unit (23), a determination unit (25), and a recovery unit (26). When an inspection operation is interrupted by the operation control unit (18), the transmission unit (23) transmits inspection data stored in the storage unit (22) to a plurality of specific devices (20). The determination unit (25) determines whether or not recovery conditions are satisfied on the basis of a plurality of responses from the devices (20) to which the transmission unit (23) transmits the inspection data. For example, the recovery unit (26) restores a normal operation when the determination unit (25) determines that the recovery conditions are satisfied.

The invention relates to an elevator comprising an electric linear motor comprising at least one linear stator designed to be located in a fixed correlation to an environment, particularly building, and at least one mover designed for connection with an elevator car to be moved and co-acting with the stator to move the car, which motor comprises a stator beam supporting said at least one stator, which stator beam has at least one side face carrying ferromagnetic poles of said stator spaced apart by a pitch, and which mover comprises at least one counter-face facing said side face(s) of the stator beam, in which counter-face electro-magnetic components of the mover are arranged to co-act with the ferromagnetic poles mounted on the stator beam, which elevator comprises an elevator brake. According to the invention the side face of the stator beam facing the mover and/or the counter face of the mover facing the side face of the stator beam comprise(s) a brake surface which form(s) the brake interface of the elevator brake.

An elevator system (1) comprises: an elevator car (4), which is moveable along a hoistway (2); a mobile node (8) moving with the elevator car (4); a stationary node (14), which does not move with the elevator car (4); and a CAN-bus (60) interconnecting the mobile node (8) with the stationary node (14) for transmitting data between the nodes (8, 14). The mobile node (8) and the stationary node (14) are configured for transmitting sound and/or video data from and/or to the elevator car (4) via the CAN-bus (60).

Modern elevators are computer controlled and a computer program sending service requests to an elevator system may be implemented in a mobile device. An API-manager is used in a mobile device for providing a common programming interface for all elevator related applications in the mobile device. The API-manager has a certificate that is used for identifying the person using the mobile device. Thus, it is possible to execute service requests that require authorization or access rights. When the identification is provided at the API-manager third party applications executed in the mobile device do not need own certificates. Furthermore, as the API-manager has a certificate service requests can be trusted also when the mobile application is provided by a third party.

A power controller with a cable connected remote controlling device is disclosed. The remote controlling device is configured to transmit a pulsed instruction signal according to a predetermined signal pattern to the power controller. The power controller determines if the instruction signal corresponds with a predetermined signal pattern. If the instruction signal corresponds with a predetermined signal pattern, the controller passes the instruction signal to switches that control power supply of an electric device.

Provided is an elevator safety system including: a plurality of communication controllers configured to communicate, over a network, signals including a safety control signal; a control device connected to a first communication controller, which is one of the plurality of communication controllers, and configured to execute operation control of the elevator, in which each of the plurality of communication controllers includes an error ratio measurement instrument configured to measure an error ratio of the network, based on a bit error of data that is received over the network, and in which the control device is configured to execute the operation control by switching the operation state of the elevator in accordance with the error ratio measured by the error ratio measurement instrument that is included in the first communication controller.