Elevator systems often include a remote elevator monitoring device that communicates with other devices that are located at sites that are remote from the site of the elevator system, for example. Remote elevator monitoring devices provide information regarding elevator system operation or conditions to remotely located monitoring centers, for example. Remote elevator monitoring devices also often allow remotely located devices to provide command or control signals to the elevator system for purposes of controlling an operation of the elevator system.
An exemplary method of managing remote control of an elevator system includes preventing any source located remotely from a site of the elevator system from controlling an operation of the elevator system when there is an indication that the elevator system is being serviced by a mechanic.
An exemplary elevator system includes a remote elevator monitoring device that is configured to prevent any source located remotely from a site of the elevator system from controlling an operation of the elevator system when there is an indication that the elevator system is being serviced by a mechanic.
The various features and advantages of a disclosed example will become apparent to those skilled in the art from the following detailed description. The drawings that accompany the detailed description can be briefly described as follows.
A remote elevator monitoring device 26 allows for communications over a communication network 28 between the elevator system 20 and remotely located devices such as the example remote access device 30. The remote elevator monitoring device 26 provides information to such remotely located devices regarding various operating parameters or conditions of the elevator system 20. Such remote elevator monitoring devices are known in the industry.
The example remote elevator monitoring device 26 is unique in that it controls whether the remote access device 30 is capable of communicating with the elevator system 20 to control an operation of the elevator system 20. For example, the remote elevator monitoring device 26 selectively prevents any remote access device 30 from communicating a command to the elevator controller 24 to cause movement of the elevator car 22. The remote elevator monitoring device 26 prevents such communication whenever there is an indication that an elevator mechanic 32 is servicing the elevator system 20. It is desirable to limit any remote control over operation of the elevator system 20 when the mechanic 32 is conducting a service operation.
The example of
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Some examples will include only the manual switch 34 for providing an indication that a mechanic is servicing the elevator system. Other examples will include only the transceiver 38 or the communication port 36 for providing the indication that the elevator system is being serviced. Still other examples will include a combination of two or more of the manual switch 34, the communication port 36 and the transceiver 38 to allow the remote elevator monitoring device 26 to determine when a mechanic is servicing the elevator system.
If there is an indication that an elevator mechanic is servicing the elevator system, a determination is made at 48 whether a preselected time period has expired. In this example, the remote elevator monitoring device 26 initiates a time period responsive to receiving an indication that the mechanic 32 intends to begin servicing the elevator system. In one example, the preselected time period is equivalent to a normal work day and is on the order of eight or nine hours. This feature allows for addressing a situation in which a mechanic 32 manually actuates the switch 34, for example, at the beginning of a service procedure and then leaves the site of the elevator system without resetting the switch 34 to indicate that the service procedure has been completed.
If there is an indication that the elevator system is in service and the preselected time period has not yet expired, then the remote elevator monitoring device 26 prevents remote control of elevator operation at 50. In some examples, the indication will interrupt any ongoing remote control that may have started before a mechanic initiates a service procedure. In other words, the decision to prevent remote control of elevator operation can be made anytime that a mechanic initiates or is continuing with a service procedure regardless of the current status of the elevator system. In one example, the remote elevator monitoring device 26 filters out any command signals from a remote access device 30 that are received over the communication network 28 so that any such command signals will not have any affect on the operation of the elevator system.
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In one example, the step shown at 52 includes limiting the number of remote control sources at a given time. For example, if one authorized source of remote control commands (e.g., the remote access device 30) is controlling the elevator operation, the ability for another remote control device to control the elevator system is limited or prevented entirely. In some examples only one remote access device can be used at a time. In another example, only one remote access device issues commands but another can be used to monitor elevator system performance at that same time.
The example remote elevator monitoring device 26 maintains status information regarding the elevator system for controlling whether a remote access device is allowed to control an operation of the elevator system. Whenever the remote elevator monitoring device 26 determines that the elevator system is being serviced by a mechanic, the remote elevator monitoring device 26 prevents remote control over the elevator system.
The preceding description is exemplary rather than limiting in nature. Variations and modifications to the disclosed examples may become apparent to those skilled in the art that do not necessarily depart from the essence of this invention. The scope of legal protection given to this invention can only be determined by studying the following claims.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US2011/035846 | 5/10/2011 | WO | 00 | 10/29/2013 |
Publishing Document | Publishing Date | Country | Kind |
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WO2012/154170 | 11/15/2012 | WO | A |
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Number | Date | Country | |
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20140069745 A1 | Mar 2014 | US |