Method for detecting over connected access cover plate

    公开(公告)号:US10023439B2

    公开(公告)日:2018-07-17

    申请号:US15726557

    申请日:2017-10-06

    Abstract: An escalator system includes a pit having an access cover plate, a detector indicating when the access cover plate is open and when it is closed, and a user interface which is located in said pit and which in an active state provides the escalator system with control signals controlling the operation of the escalator and which in a passive state does not affect the operation of the escalator. In order to improve the safety of the escalator system the escalator system is configured to stop movement of the escalator if the detector indicates that the access cover plate is closed while the user interface is in the active state.

    SOLUTION FOR RESETTING A SAFETY MODE OF AN ELEVATOR SYSTEM

    公开(公告)号:US20240262654A1

    公开(公告)日:2024-08-08

    申请号:US18595709

    申请日:2024-03-05

    CPC classification number: B66B5/0056 B66B1/3461 B66B2201/406

    Abstract: The invention relates to a method for resetting a safety mode of an elevator system. The safety mode is caused by a power cycle of the elevator system. The method comprises: obtaining, upon a restoration of a power supply of the elevator system, status information indicative of a current safety status of at least one safety space of the elevator system from an elevator safety detection system; receiving, from a remote elevator service entity, a reset command comprising an instruction to reset the safety mode of the elevator system; and resetting the safety mode of the elevator system in response to receiving the reset command, if the obtained status information fulfills a predefined criterion. The invention relates also to an elevator safety control unit, a remote reset system, a computer program, and a computer-readable storage medium for resetting a safety mode of an elevator system.

    METHOD FOR PREVENTIVE MAINTENANCE OF AN ELEVATOR AND AN ELEVATOR SYSTEM

    公开(公告)号:US20190248625A1

    公开(公告)日:2019-08-15

    申请号:US16254243

    申请日:2019-01-22

    CPC classification number: B66B5/0025 B66B5/0031 B66B5/0037 B66B5/0087

    Abstract: A method for preventive maintenance of an elevator speed sensor system includes at least a first and a second sensor, which are independent of each other. The method includes: determining a reference distance for an elevator car travel between a first door zone and a second door zone, during the elevator car travel, defining continuously a first elevator car speed information from the first sensor and a second elevator car speed information from the second sensor, calculating a cumulative sensor system error by integrating the difference between the first elevator car speed information and the second elevator car speed information, and dividing the cumulative sensor system error with the reference distance to obtain a sensor system performance indicator.

    Communication system for transmitting safety information in an elevator system

    公开(公告)号:US12012302B2

    公开(公告)日:2024-06-18

    申请号:US16284896

    申请日:2019-02-25

    CPC classification number: B66B1/3461 B66B1/3446 B66B5/0031 G08B21/02

    Abstract: According to an aspect, there is provided a communication system for transmitting safety information in an elevator system. The communication system comprises a first node; and a second node; wherein the first node is configured to receive first safety information from a first safety node via two parallel communication channels, to convert the received first safety information into a serial form for transmission in a first safety message over a single communication channel between the first node and the second node and to transmit the first safety message to the second node over the single communication channel; and the second node is configured to receive the first safety message and to convert the first safety information in the first safety message back into the parallel form for transmission via two parallel communication channels to a second safety node.

    Method for preventive maintenance of an elevator and an elevator system

    公开(公告)号:US11753275B2

    公开(公告)日:2023-09-12

    申请号:US16254243

    申请日:2019-01-22

    CPC classification number: B66B5/0025 B66B5/0031 B66B5/0037

    Abstract: A method for preventive maintenance of an elevator speed sensor system includes at least a first and a second sensor, which are independent of each other. The method includes: determining a reference distance for an elevator car travel between a first door zone and a second door zone, during the elevator car travel, defining continuously a first elevator car speed information from the first sensor and a second elevator car speed information from the second sensor, calculating a cumulative sensor system error by integrating the difference between the first elevator car speed information and the second elevator car speed information, and dividing the cumulative sensor system error with the reference distance to obtain a sensor system performance indicator.

    METHOD FOR AIDING OR MANAGING A RESCUE OPERATION

    公开(公告)号:US20210395041A1

    公开(公告)日:2021-12-23

    申请号:US17306145

    申请日:2021-05-03

    Abstract: A method for aiding or managing a rescue operation in an elevator system includes at least one elevator having a car driving in an elevator runway having several floors, and an elevator control which gathers data of components of the elevator system and issues a failure signal in any case of failure situation in the elevator system leading to a stop of the car between the floors. In the method it is checked based on first sensor data, whether a person is trapped in the car, and based on the first data or manually a rescue managing process is started, using a rescue managing circuit connected to the elevator control. The rescue managing process includes a pre-rescue process in which following data is read from sensors and/or components of the elevator system: car position data, status data of the elevator system and of the elevator components, functional data of the elevator system and/or of the elevator components, which functional data is obtained from the elevator control and/or from sensors connected to the elevator system. From these data presentation data are generated and displayed on a display connected to the rescue managing circuit and/or to the elevator control in preparation of a manual or automatic rescue drive.

    AN ELEVATOR AND A METHOD FOR PROVIDING ACCESS TO AN ELECTRICAL SAFETY DEVICE OF AN ELEVATOR

    公开(公告)号:US20250074744A1

    公开(公告)日:2025-03-06

    申请号:US18788963

    申请日:2024-07-30

    Abstract: An elevator includes an elevator car inside an elevator shaft, adapted to transfer passengers and/or cargo between landings; an electric drive for operating the elevator car; a manual operating panel disposed inside the elevator shaft for manual drive of the elevator car; and an elevator safety chain including a controller in connection with a plurality of safety devices for monitoring elevator safety. The safety chain includes an electrical safety device configured to provide information about the elevator car approaching a temporary refuge space inside the shaft. The controller is configured to obtain information from the electrical safety device, and to generate a stopping command to stop movement of the elevator car before entering the refuge space. The controller is configured to, in response to a maintenance request of the electrical safety device, exclude the electrical safety device from operation of the elevator safety chain, to enable manual drive of the elevator car with the manual operating panel. A method provides access to an electrical safety device of an elevator.

    ELEVATOR SYSTEM AND METHOD FOR OPERATING

    公开(公告)号:US20250066159A1

    公开(公告)日:2025-02-27

    申请号:US18944937

    申请日:2024-11-12

    Abstract: An elevator system includes a hoistway with marking objects arranged at predetermined positions in the hoistway, an elevator car with a sensor providing an indication when the elevator car has reached the position a marking object, a complementary positioning system providing a complementary indication of the position of the elevator car in the hoistway, and a controller receiving the indication and the complementary indication. In order to minimize a need for manual inspections, the controller includes a memory maintaining for each marking object a setup position, and during elevator runs, the controller is configured to calculate an offset for a marking object for which the sensor provides an indication, by comparing the setup position for the marking object in question with the position indicated by the complementary positioning system at the indication of the marking object, and to trigger an alarm if the calculated offset fulfills a predetermined criterion.

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