A people mover includes an endless conveying band and a control system. The control system includes a controller, a detecting arrangement for detecting people on the endless conveying band, and a signaling arrangement for providing visual and/or audio signals to people on the endless conveying band. The controller is configured to: determine based on output of the detecting arrangement, in particular based on signals and/or data generated by the detecting arrangement, whether a distance between detected people on the endless conveying band is below a minimum allowed distance; and present to people on the endless conveying band with a signaling arrangement alarm or instruction signals when a distance between detected people on the endless conveying band is below a minimum allowed distance.

A people mover includes an endless conveying band and a control system. The control system includes a controller, a detecting arrangement for detecting people on the endless conveying band, and a signaling arrangement for providing visual and/or audio signals to people on the endless conveying band. The controller is configured to: determine based on output of the detecting arrangement, in particular based on signals and/or data generated by the detecting arrangement, whether a distance between detected people on the endless conveying band is below a minimum allowed distance; and present to people on the endless conveying band with a signaling arrangement alarm or instruction signals when a distance between detected people on the endless conveying band is below a minimum allowed distance.

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.

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.

The invention relates to a passenger conveyor, e.g. an elevator, comprising a conveyor motor being controlled by a conveyor control via a motor drive, the motor drive comprising a frequency converter with a rectifier bridge, an intermediate DC circuit and a converter bridge connected with the conveyor motor. The rectifier bridge is configured to be connected to mains via at least one relay, which relay is controlled by the conveyor control, the conveyor comprises a deep sleep mode, in which the frequency converter as well as at least a major part of conveyor control is switched off,

in which conveyor the intermediate DC circuit forms the power supply for the conveyor control. During the activation of the deep sleep mode the conveyor control is configured to open the relay, whereby at least one signal circuit of the conveyor is configured to remain powered at least during the deep sleep mode. The conveyor comprises a wake-up circuit which is connected to the signal circuit and which is configured to be permanently powered at least during the deep sleep mode, which wake-up circuit is configured to close the relay dependent on a signal received from the signal circuit.

The invention relates to a passenger conveyor, e.g. an elevator, comprising a conveyor motor being controlled by a conveyor control via a motor drive, the motor drive comprising a frequency converter with a rectifier bridge, an intermediate DC circuit and a converter bridge connected with the conveyor motor. The rectifier bridge is configured to be connected to mains via at least one relay, which relay is controlled by the conveyor control, the conveyor comprises a deep sleep mode, in which the frequency converter as well as at least a major part of conveyor control is switched off,

in which conveyor the intermediate DC circuit forms the power supply for the conveyor control. During the activation of the deep sleep mode the conveyor control is configured to open the relay, whereby at least one signal circuit of the conveyor is configured to remain powered at least during the deep sleep mode. The conveyor comprises a wake-up circuit which is connected to the signal circuit and which is configured to be permanently powered at least during the deep sleep mode, which wake-up circuit is configured to close the relay dependent on a signal received from the signal circuit.

A passenger conveyor (1) comprises at least one transport chain (6) connected to a plurality of transportation elements (4) which are configured for travelling in a closed loop along a pathway; at least one sensor (24), which is arranged in a non-straight portion of the pathway and which is configured for detecting a varying force (F) exerted by the transport chain (6) and/or by the transportation elements (4) in a direction oriented transversely, in particular orthogonally, to a travelling direction of the transportation elements (4); and a calculation and alarm unit (26).

A passenger conveyor (1) comprises at least one transport chain (6) connected to a plurality of transportation elements (4) which are configured for travelling in a closed loop along a pathway; at least one sensor (24), which is arranged in a non-straight portion of the pathway and which is configured for detecting a varying force (F) exerted by the transport chain (6) and/or by the transportation elements (4) in a direction oriented transversely, in particular orthogonally, to a travelling direction of the transportation elements (4); and a calculation and alarm unit (26).

A passenger detector (10) for use in a passenger conveyor system (12) is provided that includes a structured light source (34), a structured light detector (36), and a controller (38). The structured light source (34) is operable to project light (40) into a detection area (32) in a predetermined projected pattern. The structured light detector (36) is operable to generate reflected light signals indicative of light (40) reflected back toward the structured light detector (36) from the detection area (32). The controller (38) is operable to receive the reflected light signals from the structured light detector (36), and operable to process the reflected light signals to make a determination as to whether a passenger is disposed within a detection area (32).

A passenger detector (10) for use in a passenger conveyor system (12) is provided that includes a structured light source (34), a structured light detector (36), and a controller (38). The structured light source (34) is operable to project light (40) into a detection area (32) in a predetermined projected pattern. The structured light detector (36) is operable to generate reflected light signals indicative of light (40) reflected back toward the structured light detector (36) from the detection area (32). The controller (38) is operable to receive the reflected light signals from the structured light detector (36), and operable to process the reflected light signals to make a determination as to whether a passenger is disposed within a detection area (32).