Elevator systems and methods are provided. The systems include an elevator car movable within an elevator shaft, the elevator car includes an elevator car door interlock device operable to open and close elevator car doors, a plurality of landing doors located at respective landings along the elevator shaft, wherein each landing door includes a landing door interlock device operable to open and close a respective landing door, wherein each landing door interlock device is engageable by the elevator car door interlock device to enable operation of the elevator car doors and the respective landing door simultaneously. An elevator component inspection system is configured with a detector located on the top of the elevator car and arranged to monitor the interlock devices, wherein the detector obtains inspection data associated with the elevator car door interlock device and the plurality of landing door interlock devices.

An elevator safety system, an elevator system, and an elevator safety control method. The elevator safety system includes a plurality of elevator safety chain sections connected in series and assigned to individual floors of an elevator. Each of the elevator safety chain sections includes a hall door switch, an inter-floor limit switch, a hall door bypass switch and a limit bypass switch arranged in series, and a processing circuit for controlling on-off of the various switches. The safety system is configured to additionally conduct the elevator safety chain section of the current floor when the elevator hall door is in the abnormally opened state, and at the same time of trying to automatically release the passengers to be rescued, the stability of running or stopping the elevator system is ensured.

An elevator safety system, an elevator system, and an elevator safety control method. The elevator safety system includes a plurality of elevator safety chain sections connected in series and assigned to individual floors of an elevator. Each of the elevator safety chain sections includes a hall door switch, an inter-floor limit switch, a hall door bypass switch and a limit bypass switch arranged in series, and a processing circuit for controlling on-off of the various switches. The safety system is configured to additionally conduct the elevator safety chain section of the current floor when the elevator hall door is in the abnormally opened state, and at the same time of trying to automatically release the passengers to be rescued, the stability of running or stopping the elevator system is ensured.

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 method and device for detecting an elevator safety chain and a computer-readable storage medium for implementing the method. A device for detecting an elevator safety chain, includes: an interface unit coupled with the elevator safety chain and configured to output an operating signal having a first level when the elevator safety chain is in an ON state and an operating signal having a second level when the elevator safety chain is in an OFF state; and a processing unit, including: memory; a microcontroller coupled with the interface unit; and a computer program stored on the memory and running on the microcontroller, the running of the computer program causes: evaluating reliability of the elevator safety chain based on time domain characteristic of the operating signal output by the interface unit.

A method and device for detecting an elevator safety chain and a computer-readable storage medium for implementing the method. A device for detecting an elevator safety chain, includes: an interface unit coupled with the elevator safety chain and configured to output an operating signal having a first level when the elevator safety chain is in an ON state and an operating signal having a second level when the elevator safety chain is in an OFF state; and a processing unit, including: memory; a microcontroller coupled with the interface unit; and a computer program stored on the memory and running on the microcontroller, the running of the computer program causes: evaluating reliability of the elevator safety chain based on time domain characteristic of the operating signal output by the interface unit.

In an embodiment, a door detection system may include a transmitter, a receiver, a reflector, and one or more processors. The transmitter positioned on an elevator car door transmits a signal towards a reflector on a hoistway door and the reflector reflects the signal towards the receiver when the hoistway door is properly positioned with respect to the elevator door. The one or more processors determine whether the hoistway door is properly positioned with respect to the elevator car door based on the reflected signal received by the receiver. If the hoistway door is not properly positioned, the elevator car is prevented from moving. If the hoistway door is properly positioned, the elevator car is free to move.

In an embodiment, a door detection system may include a transmitter, a receiver, a reflector, and one or more processors. The transmitter positioned on an elevator car door transmits a signal towards a reflector on a hoistway door and the reflector reflects the signal towards the receiver when the hoistway door is properly positioned with respect to the elevator door. The one or more processors determine whether the hoistway door is properly positioned with respect to the elevator car door based on the reflected signal received by the receiver. If the hoistway door is not properly positioned, the elevator car is prevented from moving. If the hoistway door is properly positioned, the elevator car is free to move.

Elevator systems and methods are provided. The systems include an elevator car including an elevator car door interlock device operable to open and close elevator car doors and a plurality of landing doors located at landings, each landing door including a landing door interlock device operable to open and close a respective landing door. Each landing door interlock device is engageable by the elevator car door interlock device to operate the elevator doors. An elevator component inspection system having a detector to monitor the interlock devices obtains inspection data associated with the interlock devices. A control unit is configured to analyze the inspection data. The component inspection system captures images of the interlock devices using the detector, performs a database inquiry comparing the captured image against a database of interlock device states, and determines a state of the interlock devices.

Elevator systems and methods are provided. The systems include an elevator car including an elevator car door interlock device operable to open and close elevator car doors and a plurality of landing doors located at landings, each landing door including a landing door interlock device operable to open and close a respective landing door. Each landing door interlock device is engageable by the elevator car door interlock device to operate the elevator doors. An elevator component inspection system having a detector to monitor the interlock devices obtains inspection data associated with the interlock devices. A control unit is configured to analyze the inspection data. The component inspection system captures images of the interlock devices using the detector, performs a database inquiry comparing the captured image against a database of interlock device states, and determines a state of the interlock devices.