Abstract: A method includes determining a load value of a system; and determining a current operating mode of a three-phase motor in the following manner: if the load value is below a first threshold, determining a variable frequency mode as the current operating mode, if the load value is between the first threshold and a second threshold, determining a first operating frequency mode as the current operating mode, and if the load value exceeds the second threshold, determining a second operating frequency mode as the current operating mode, the second threshold is greater than the first threshold, the windings of the three-phase motor are wired in a star wiring method and in a triangular wiring method in the first and second operating frequency modes, respectively.

Abstract: An automatic conveying device, a method for determining the presence of an external object, and an automatic start method. The automatic conveying device includes a first end and a second end opposite to each other; and a middle section between the first end and the second end; the automatic conveying device further including one or more first detection devices arranged on one or both sides of the automatic conveying device, each first detection device has a detection range that is substantially a plane area, and the detection range of each first detection device covers at least a portion of the middle section; and a processor connected to the one or more first detection devices, and configured to determine, based at least partially on signals detected by the one or more first detection devices, whether an external object is present on the automatic conveying device.

Abstract: An assembly and method includes selecting a jacket material for a jacket that encases a plurality of tension members, selecting a protective material for the jacket, and covering only pre-identified portions of the jacket with the protective material.

Abstract: An automatic conveying device and a maintenance method therefor. The automatic conveying device includes a fixed step drive wheel, and a step driven wheel located on a movable bracket; a step chain in transmission connection with the step drive wheel and the step driven wheel; a tensioning device that acts on the movable bracket to maintain the step chain in tension; a sensor device that detects a displacement of the movable bracket; and a processor configured to send a first warning signal when a single-trip displacement of the movable bracket exceeds a first threshold, and to send a second warning signal when a accumulative displacement of the movable bracket exceeds a second threshold.

Abstract: An elevator system includes an elevator car, an elevator controller, and a safety controller, connected to a plurality of safety devices arranged to monitor the elevator system. The safety controller is configured to receive a signal in response to a change of state of any of the safety devices, and to determine a condition of the elevator system in response to the change of state of one or more of the safety devices. If the safety controller renders a determination that the elevator system is in a first condition, the safety controller causes an elevator brake to be deployed, preventing movement of the elevator car. If the safety controller renders a determination that the elevator system is in a second condition, the safety controller allows movement of the elevator car for a predetermined duration or until the elevator car has travelled a predetermined distance.

Abstract: Building systems and methods of performing building maintenance operations are described. The systems include a controller configured to receive requests associated with an elevator system of a building. A database having verification procedures associated with the elevator system is provided and the controller is operable to initiate the verification procedures. A robot is configured in communication with the controller and configured to receive instructions from the controller. The instructions may include a portion of a verification procedure, wherein the robot is configured to perform one or more tasks based on the verification procedure. The robot includes at least one sensor configured to collect sensor data. At least one of the controller and the robot are configured to perform an operation in response to sensor data collected by the robot, with the operation being a determination if the elevator system operation is nominal or if further action is required.

Abstract: A fault detection method and device for elevator power equipment and an elevator system. The method includes acquiring running speed data of an actuator in the elevator power equipment, and using the corresponding running speed data when the elevator is at a first speed and within a preset duration as target data; obtaining time-domain signal data of acceleration by calculation according to the target data, obtaining frequency-domain signal data of acceleration by conversion according to the time-domain signal data; comparing peak frequencies that form waveform peaks in the frequency-domain signal data with characteristic frequencies of the elevator power equipment, and determining the elevator power equipment to be faulty when at least one first frequency is detected in the peak frequencies, wherein the first frequency matches one of the characteristic frequencies and the amplitude thereof exceeds a preset threshold.

Abstract: A method of calling an elevator car for an elevator system including: transmitting, using a first beacon, a first poll wireless signal, the first poll wireless signal having a first poll transmission speed; receiving, using the first beacon, a first response wireless signal from a passenger mobile device in response to the first poll wireless signal, the first response wireless signal having a first response transmission speed; determining a first time of flight between transmission of the first poll wireless signal from the first beacon and receipt of the first response wireless signal at the first beacon; calculating a first distance between the first beacon and the passenger mobile device based on the first time of flight, the first poll transmission speed, and the first response transmission speed; and determining a location of the passenger mobile device based on at least the first distance.

Abstract: An illustrative example embodiment of an elevator system includes a plurality of components respectively configured for at least one function during operation of the elevator system. A plurality of sensors are each associated with at least one of the components. Each sensor senses at least one characteristic of an actual performance of an associated one of the components. A processor is configured to receive respective indications from the sensors regarding the actual performance of the associated components, determine a difference between the actual performance and a desired performance of any of the components based on the respective indications, and determine an adjustment to the operation of the elevator system based upon the determined difference.

Abstract: Elevator system governors include a traction pulley having an engagement surface and a cable wound about the traction pulley that is configured to travel along the cable. An electromechanical locking mechanism is configured to selectively engage with the traction pulley to cause operation of a safety brake of an elevator system. The locking mechanism includes a hub assembly having inner and outer engagement hubs. The inner hub has an actuator connector connectable to a safety linkage and the outer hub has an engagement surface for selectively engaging with the engagement surface of the traction pulley. An actuator is configured to selectively apply force to the outer engagement hub into engagement such that the engagement surface of the outer engagement hub and the engagement surface of the traction pulley are engaged, and to cause rotation of the inner engagement hub.

Abstract: A position detecting device and an elevator system including the same. The position detecting device includes a ruler guide formed with a through groove for receiving and guiding a position ruler of the elevator system, the through groove further has a through opening toward a side surface of the ruler guide; and a limitator is provided at the through opening, the limitator is distributed or extended along a longitudinal direction of the through opening, and the position of the limitator is arranged to correspond to a site of the position ruler without position information.

Abstract: A method and assembly includes pre-tensioning an elevator suspension member to adjust low load elongation of tension members within the elevator suspension member prior to placing the elevator suspension member in operation for an elevator.

Abstract: An elevator sill clearance protection device includes a baffle plate arranged adjacent to an elevator car door sill and configured to be in a first position when an elevator car door is closed, and to be in a second position when the elevator car door is opened so as to at least partially reduce a clearance between the elevator car door sill and a landing door sill; and an actuator arranged in an elevator car and connected to the baffle plate, the actuator configured to actuate the baffle plate from the first position to the second position when the elevator car door is opened, and return the baffle plate to the first position when the elevator car door is closed.

Abstract: An elevator system includes an elevator car configured to travel in a hoistway, the elevator car including an elevator car door; a controller configured to control motion of the elevator car; at least one sensor configured to sense an operating condition of the elevator system; and a sensor interface configured to detect a shutdown state of the elevator system in response to the operating condition.

Abstract: A condition detecting method and device for a surface insulation layer of an elevator traction belt. The condition detecting method includes: positioning a detecting component adjacent to the surface insulation layer of the elevator traction belt; moving the elevator traction belt relative to the detecting component, so that the detecting component scans the surface insulation layer of the elevator traction belt; applying static electricity to the detecting component through a static electricity generation component; detecting the reaction of the elevator traction belt to the static electricity; and identifying the condition of the surface insulation layer of the elevator traction belt according to the detected reaction of the elevator traction belt to the static electricity.

Abstract: An escalator system includes a moving step including a plurality of grooves and drivable in a travel direction. A combplate is located at at least a downstream end of the moving step relative to the travel direction at a step-combplate interface. A retraction device is configured to move the combplate along the travel direction from a normal position toward a retracted position when an entrapment of an object is detected at the step-combplate interface.

Abstract: A device for detecting a function of a contactor, the contactor is configured to short three-phase phase lines of an elevator motor together by closing contacts, the device including: a voltage signal source coupled with the contactor; a voltage detection unit coupled with the three-phase phase lines of the elevator motor; a switching unit arranged between the contactor and the voltage signal source and between the voltage detection unit and the three-phase phase lines, in a detection mode, the switching unit is configured to conduct the voltage signal source to the contactor to provide a voltage detection signal to the three-phase phase lines via the contactor and to conduct the voltage detection unit to the three-phase phase lines, the voltage detection unit being configured to measure voltage of the three-phase phase lines and to output measurement to a control unit.

Abstract: An elevator-rope inspection device comprising a camera for capturing images of the elevator rope R, and an image-processing unit for processing a captured image outputted by the camera, wherein the image-processing unit detects a location of wear by implementing binarization on the captured images, and a labeling process that assigns a label to the location of wear, measures a distance between labels 1, 2, and 3 assigned by the labeling process, and when that distance is less than a fixed value, it judges that the area between labels is a wire break, so texture information of the elevator rope is unnecessary in advance.

Abstract: A safety device includes an external device for the use of inspection within an elevator hoistway, and a human detection sensor in electrical communication with the external device and an elevator controller. The human detection sensor is configured to detect presence of a person within the hoistway in response to the ON operation of the external device to prevent movement of the elevator car.