DETERMINATION OF A SEQUENCE OF BUS NODES IN A MULTI-DROP COMMUNICATION BUS

    公开(公告)号:US20230029130A1

    公开(公告)日:2023-01-26

    申请号:US17960502

    申请日:2022-10-05

    Abstract: According to an aspect, there is provided a method for determining a sequence of bus nodes in a multi-drop communication bus. The method includes for each bus node: sending a request to the bus node using an bus node physical identifier to set the bus node to a loopback mode; transmitting at least one signal to the bus node via the multi-drop communication bus; receiving from the bus node a loopback signal caused by the at least one signal; and measuring a roundtrip delay between the at least one signal and the loopback response signal. The method further includes solving the physical order of the bus nodes in the multi-drop communication bus based on the roundtrip delays.

    Elevator communication arrangement
    74.
    发明授权

    公开(公告)号:US11453570B2

    公开(公告)日:2022-09-27

    申请号:US16172311

    申请日:2018-10-26

    Abstract: Conventionally, elevator communications have been implemented using travelling cables. This is particularly the case when safety related data transmitted from an elevator car has to fulfil real-time restrictions often set by regulators so that the receiving of the information may not be delayed. Typically, this cannot be guaranteed when wireless transmission technologies are used. The reliability can be increased by using a second to supplement the wireless transmission.

    Elevator communication system
    75.
    发明授权

    公开(公告)号:US11407613B2

    公开(公告)日:2022-08-09

    申请号:US17467873

    申请日:2021-09-07

    Abstract: An elevator communication system includes at least one ethernet bus segment, a controller communicatively connected to the at least one ethernet bus segment, and a plurality of elevator system nodes communicatively connected to the at least one ethernet bus segment. The controller is configured to determine a fault situation in the elevator communication system and cause reduction of the data communication via the at least one ethernet bus segment based on the fault situation.

    Safety communication in an elevator communication system

    公开(公告)号:US11380190B2

    公开(公告)日:2022-07-05

    申请号:US17226758

    申请日:2021-04-09

    Abstract: According to an aspect, there is provided an elevator communication system. The system comprises an ethernet bus, a safety master node communicatively connected to the ethernet bus and configured to communicate via the ethernet bus, and safety slave nodes communicatively connected to the ethernet bus and configured to communicate via the ethernet bus. The safety master node and the safety slave nodes are configured to communicate by using a time-triggered communication protocol. In the time-triggered communication protocol the safety master node is configured to send a polling diagnostic request message to the safety slave nodes by using a predetermined polling cycle.

    ELEVATOR COMMUNICATION SYSTEM
    77.
    发明申请

    公开(公告)号:US20220119225A1

    公开(公告)日:2022-04-21

    申请号:US17467873

    申请日:2021-09-07

    Abstract: An elevator communication system includes at least one ethernet bus segment, a controller communicatively connected to the at least one ethernet bus segment, and a plurality of elevator system nodes communicatively connected to the at least one ethernet bus segment. The controller is configured to determine a fault situation in the elevator communication system and cause reduction of the data communication via the at least one ethernet bus segment based on the fault situation.

    ELEVATOR SAFETY SYSTEM, ELEVATOR SYSTEM, AND METHOD FOR ELEVATOR CAR COLLISION PROTECTION

    公开(公告)号:US20220106154A1

    公开(公告)日:2022-04-07

    申请号:US17468993

    申请日:2021-09-08

    Abstract: An elevator safety system includes an elevator car safety unit arranged on or at least in mechanical connection, preferably in fixed manner, with an elevator car; at least one distance measurement target; and a distance measurement device mounted on the elevator car for determining a distance between the distance measurement target and the distance measurement device. The elevator car safety unit is arranged in connection with the distance measurement device and is configured to generate an output signal based on the determined distance.

    Elevator arrangement and elevator
    79.
    发明授权

    公开(公告)号:US11192754B2

    公开(公告)日:2021-12-07

    申请号:US16221711

    申请日:2018-12-17

    Abstract: An elevator arrangement including an elevator with an elevator control system, a safety system and an inspection or maintenance mode, which elevator having an elevator car arranged to run up and down in an elevator shaft along guide rails, and which elevator car is equipped with a roof. The roof of the elevator car is arranged to uncover upper part of the elevator car in order to form a natural safe working space inside the elevator car, and that the arrangement includes a control mechanism in order to control the position of the roof.

    Rescue apparatus and an elevator
    80.
    发明授权

    公开(公告)号:US11192751B2

    公开(公告)日:2021-12-07

    申请号:US15649851

    申请日:2017-07-14

    Abstract: The invention concerns a rescue apparatus, an elevator as well as a retrofit kit. The rescue apparatus comprises a brake control unit having input terminals for connecting to a power supply, output terminals for connecting to a magnetizing coil of an electromagnetic brake, at least one controllable brake opening switch associated with at least one of the input terminals and adapted, in an open state, to prevent supply of current from the power supply to the magnetizing coil and, in a closed state, to allow supply of current from the power supply to the magnetizing coil. The rescue apparatus further comprises a control cable comprising one or more control signal wires and a remote control panel coupled via the control cable to the brake control unit.

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