An elevator communication system includes a first elevator controller; a second elevator controller; and a first ethernet bus portion connected to the first elevator controller, the first ethernet bus portion having sequential bus segments interconnected by at least one switch. The first ethernet bus portion is arranged in a first elevator shaft. A second ethernet bus portion is connected to the second elevator controller and includes sequential bus segments interconnected by at least one switch. The second ethernet bus portion is arranged in a second elevator shaft. A switch of the first ethernet bus portion and a switch of the second ethernet bus portion are interconnected to enable data transmission between the switch of the first ethernet bus portion and the switch of the second ethernet bus portion. The first elevator controller is communicatively connected to the second elevator controller.

A speed governor assembly and an elevator system. The speed governor assembly includes: a sheave; a centrifugal mechanism mounted on the sheave and rotating together with the sheave; an overspeed protection switch at a first distance from a radial outer side of the centrifugal mechanism; a core ring disposed coaxially with the sheave; and a triggering arm rotating together with the core ring; wherein the centrifugal mechanism engages with the core ring and drives the core ring and the triggering arm to rotate when the sheave reaches a second speed, and the rotation of the triggering arm can contact and trigger the overspeed protection switch.

A safety control device (1) for a people conveyor (101). The safety control device (1) includes a first safety control channel (2) configured to output a first safety control signal in response to one or more input signals (10, 12, 14), a second safety control channel (4) configured to output a second safety control signal in response to one or more input signals (10, 12, 14), and an override control channel (6) configured to: monitor the health of the first and second safety control channels (2, 4), determine whether a fault has occurred in either of the first or second safety control channels (2, 4), and override the first or second safety control signal in response to a determination that a fault has occurred in the corresponding safety control channel (2, 4).

A method and a corresponding device for exchanging a component in a passenger transport system are proposed. In this case, a digital double dataset, which is digitally stored in a computer and can also be processed, exists parallel to the passenger transport system, wherein said digital double dataset comprises data concerning physical properties of the passenger transport system. The method comprises the steps of physically exchanging the component by removing an existing component from the passenger transport system and replacing the existing component with a replacement component; and exchanging component data concerning physical properties of the component in an at least partially automated manner by replacing component data concerning physical properties of the existing component with component data concerning physical properties of the replacement component in the digital double dataset.

A method for maintenance of an elevator in Shabbat mode, the method including providing a Shabbat elevator maintenance system, where the system is in communication with the elevator, detecting a malfunction in the elevator by the maintenance system, notifying a technician about the malfunction by the maintenance system, following repair of the elevator by a repairing technician, verifying by the maintenance system that the elevator has been repaired and that Shabbat mode has been reactivated, and activating remuneration for the repairing technician by the maintenance system.

A method of interconnecting a daisy chain communication network having a terminal managers and a plurality of managed switches and a plurality of fixtures operable as clients of a client server network. The method also includes transmitting a discovery message to a first fixture and a second fixture, capturing the discovery message in the first fixture and the second fixture, and determining a first head fixture and at least one of a second head fixture and a tail fixture. Furthermore, the method also includes discovering an intermediate fixture based on the first head fixture and the at least one of a second head fixture and a tail fixture, resolving which of the first head fixture and the at least one of a second head fixture and a tail fixture is to be identified as an active head fixture, and establishing the active head fixture and a passive tail fixture.

Methods and systems for monitoring an elevator communication module fault, and elevator systems. The method for monitoring an elevator communication module fault includes acquiring a feedback result in response to sending requests from one or more client ends to the elevator communication module, the elevator communication module being provided for having near-field wireless communication with a client end; counting the number of request failures in the feedback result within a pre-set duration; judging whether the countered number of request failures is not less than a pre-set threshold, and if yes, determining that the elevator communication module has a fault. The invention can quickly and efficiently detect the elevator communication module that has failed, improve elevator passengers' experience, and ensure that the elevator is in excellent operation condition and has a reliable safety performance.

According to an aspect, there is provided an elevator communication system. The system includes an elevator controller, a first ethernet bus portion connected to a first port of the elevator controller, a second ethernet bus portion connected to a second port of the elevator controller, and at least one elevator system node communicatively connected to the elevator controller via the first ethernet bus portion and the second ethernet bus portion.

An elevator communication system includes a first elevator controller, a second elevator controller communicatively connected to the first elevator controller, a first ethernet bus portion connected to the first elevator controller, a second ethernet bus portion connected to the second elevator controller, and at least one elevator system node communicatively connected to the first elevator controller via the first ethernet bus portion and to the second elevator controller via the second ethernet bus portion.

A method of interconnecting a daisy chain communication network having a terminal managers and a plurality of managed switches and a plurality of fixtures operable as clients of a client server network. The method also includes transmitting a discovery message to a first fixture and a second fixture, capturing the discovery message in the first fixture and the second fixture, and determining a first head fixture and at least one of a second head fixture and a tail fixture. Furthermore, the method also includes discovering an intermediate fixture based on the first head fixture and the at least one of a second head fixture and a tail fixture, resolving which of the first head fixture and the at least one of a second head fixture and a tail fixture is to be identified as an active head fixture, and establishing the active head fixture and a passive tail fixture.