WO2018015171A1 - Contrôle et exploitation de systèmes de pont à fil électroniques - Google Patents

Contrôle et exploitation de systèmes de pont à fil électroniques Download PDF

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Publication number
WO2018015171A1
WO2018015171A1 PCT/EP2017/066948 EP2017066948W WO2018015171A1 WO 2018015171 A1 WO2018015171 A1 WO 2018015171A1 EP 2017066948 W EP2017066948 W EP 2017066948W WO 2018015171 A1 WO2018015171 A1 WO 2018015171A1
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WO
WIPO (PCT)
Prior art keywords
jumper
wire bridge
technician
signal
switch
Prior art date
Application number
PCT/EP2017/066948
Other languages
English (en)
Inventor
Christopher Mason
Original Assignee
Inventio Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inventio Ag filed Critical Inventio Ag
Publication of WO2018015171A1 publication Critical patent/WO2018015171A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks

Definitions

  • the various embodiments of a technology described herein generally relate to electrical or electro- mechanical installations that are subject to service or repair during which components of such installations need to be bypassed. More particularly, the various embodiments described herein relate to wire bridges used to bypass components in an electrical or electro-mechanical installation and to monitor use of these wire bridges.
  • An electrical or electro-mechanical installation is an elevator installation. Multi-story buildings are usually equipped with at least one elevator installation.
  • a suspension medium - such as a rope or flat belt-type rope - interconnects a counterweight and a cabin, and an electrical drive motor causes the suspension medium to move in order to thereby move the counterweight and the cabin up and down along a shaft or hoistway.
  • An elevator installation is a hydraulic elevator where an electric motor pumps hydraulic oil into a cylinder to move a piston, which then lifts an elevator cab.
  • An elevator controller of the elevator installation controls and monitors the operation of the elevator installation, e.g., by processing input signals received via communications network or signaling lines (e.g., from sensors, safety components (e.g., stop switches, door lock switches), etc.) and by generating control signals, which are fed to the communications network or the signaling lines.
  • communications network or signaling lines e.g., from sensors, safety components (e.g., stop switches, door lock switches), etc.
  • An elevator installation is subject to regular servicing or maintenance, testing or occasional repairs. During these procedures, it may be necessary to use wire bridges or jumpers to bypass, short circuit, or interrupt certain components, e.g., a safety door switch to allow operation of the elevator installation with an open door, or a stop switch to allow a cabin to travel beyond a set stop. Once these procedures are finished, it is important that a technician removes all wire bridges, otherwise serious safety hazards exist. To minimize the risks caused by a jumper that has mistakenly been left in place, Wurtec, Inc., Ohio, USA, offers an electronic jumper that "times out" after a pre-programmed period of time. A jumper that times out is described in US 2009/0121731.
  • WO 2011/090665 describes an elevator safety tool for short circuiting an elevator switch.
  • the tool includes a control module, and a relay, wherein the relay has a switch having a closed position and an open position.
  • the control module receives status data and determines whether the operating status is "normal” or "service”. The switch is closed when the elevator is in service, and open when the elevator is in normal operation.
  • one aspect of such an alternative technology involves a monitoring system having a wire bridge for use by a technician during servicing an electrical or electro-mechanical installation to bridge a component of the electrical or electro-mechanical installation, and a monitoring device for the wire bridge.
  • the wire bridge includes an electronic identification device configured to transmit a radio signal including an identification number of the wire bridge and to receive a control signal, a switch having an open state and a closed state to break or make an electrical connection, and a controller coupled to the identification device and the switch to control the switch in one operational mode as a function of the received control signal.
  • the wire bridge is activated when the switch is in the closed state, and deactivated when the switch is in the open state.
  • the monitoring device has a transceiver to receive the radio signal transmitted by the electronic identification device when within a
  • the controller is configured to cause the switch to open when no control signal is received or the received control signal has a signal strength that is below a predetermined threshold value in order to deactivate the wire bridge if it is not within the predetermined radio range.
  • a radio signal is received by a monitoring device from the wire bridge when the monitoring device is within a predetermined radio range, wherein the radio signal includes an identification number of the wire bridge.
  • the method records that the wire bridge is used by a technician during servicing an electrical or electro-mechanical installation.
  • the radio signal is monitored to determine if the wire bridge is still within the predetermined radio range. If it is not within the predetermined radio range, the wire bridge is deactivated. Deactivating the wire bridge includes opening a switch included in the wire bridge that breaks an electric connection.
  • the monitoring device is included in a mobile device assigned to the technician. It may be a smartphone, a tablet computer, a portable computer, or an electronic service tool. These devices have a processor, a transceiver to receive and transmit data, and some kind of memory. The technician usually brings such devices to a site, so that the technician in one embodiment is not required to bring an additional tool to the site.
  • the monitoring device includes the mobile device and a wire bridge kit.
  • the wire bridge kit has a housing to receive several wire bridges and a transceiver. The transceiver detects removal and return of a wire bridge from the housing. Data relating to these events is recorded to allow logging and tracking of a wire bridge's use.
  • the data may be stored in a memory of the wire bridge kit, the mobile device and/or a remote log server.
  • the log server may be viewed as being part of a decentralized monitoring device, wherein communications occur via a network.
  • the electrical or electro-mechanical installation is an elevator installation
  • usage data is sent to an elevator controller.
  • the elevator controller temporarily disables predetermined safety monitors of the elevator installation.
  • a safety monitor is a door lock monitor of the elevator installation.
  • the electrical or electro-mechanical installation has a further operational mode in which the wire bridge is subjected to a self-test.
  • the controller controls the switch as a function of a trigger signal to perform a self-test of the wire bridge.
  • the trigger signal is generated by the wire bridge when being turned on, or is received from the monitoring device. This ensures that only a properly working wire bridge is used by the technician.
  • an alarm may be generated to alert the technician and/or a supervisor of a forgotten jumper.
  • generating the alarm may include generating a warning message (e.g., a text message (SMS)), a visible alarm (e.g., an activated light source), an audible alarm and/or a vibrational alarm.
  • SMS text message
  • the alarm may be sent to a remote control center.
  • the technician's supervisor is located at the control center and is made aware of the alarm. In case the technician does not confirm the alarm, either by confirming removal of a forgotten wire bridge or explaining its prolonged use, at least the supervisor can attend to the alarm. This contributes to maintaining the installation in a safe and reliable state.
  • usage data is stored to allow monitoring (including logging and tracking) the use of the wire bridge.
  • the usage data may include the identification number, a location of where the wire bridge is used, date and time of its use, and/or a location of the monitoring device.
  • the usage date may be stored in a memory of the mobile device, the wire bridge kit and/or the log server.
  • the described technology allows flexibility as to the communications technology used. That is, Bluetooth technology or RFID technology may be used.
  • the electronic identification device includes a Bluetooth beacon and the transceiver includes a Bluetooth module.
  • the electronic identification device includes an RFID tag and the transceiver includes an RFID reader.
  • the technology provides for an electronic wire bridge monitoring system that allows use of a wire bridge to be logged and tracked. According to that technology, a technician can generally position a wire bridge in an installation just like in the prior art, but without having to install or connect additional equipment or connections. As each wire bridge is provided with and wirelessly transmits a unique identifier, monitoring the use of the wire bridge occurs in a simple manner by means of a monitoring device.
  • Fig. 1 shows a schematic illustration of an exemplary application of an electronic wire bridge monitoring system in connection with an elevator installation
  • Fig. 2 is a schematic illustration of one embodiment of an electronic wire bridge
  • Fig. 3 is a schematic illustration of a mobile device running a jumper software
  • Fig. 4 is a schematic illustration of one embodiment of a jumper kit for use in one
  • Fig. 5 is a flow diagram of one embodiment of a method of operating the wire bridge monitoring system
  • Fig. 6 is a schematic illustration of interactions between components in accordance with one embodiment of the wire bridge monitoring system.
  • Fig. 7 is a flow diagram of a further embodiment of a method of operating the wire bridge monitoring system.
  • Fig. 1 schematically illustrates one exemplary application of an electronic wire bridge monitoring system in connection with an elevator installation 1.
  • a wire bridge used in the electronic wire bridge monitoring system may hereinafter be referred to as a jumper. It is contemplated, however, that a wire bridge or jumper can bridge, bypass, short circuit, or jump components.
  • the terms “bridge,” “short circuit,” “bypass,” and “jump” are used herein interchangeably.
  • the electronic wire bridge monitoring system's use is not limited to elevator installations, but has general applicability in any electronic or electro-mechanical system or installation (including, e.g., vehicles (cars, trains), industrial installations, escalators, power control systems used, e.g.
  • the elevator installation 1 of Fig. 1 is, e.g., installed in a multi-story building, whereas individual floors are not shown in Fig. 1.
  • the elevator installation 1 includes a cabin 2 connected via a suspension medium 10 (e.g., one or more round ropes or flat belt-type ropes) to a counterweight 4, wherein the cabin 2 and the counterweight 4 are movable up and down in opposite directions in a vertically extending shaft or hoistway (not indicated in Fig. 1).
  • the elevator installation 1 may be configured as a hydraulic elevator. In the situation shown in Fig.
  • a jumper 18 of the wire bridge monitoring system is schematically shown to illustrate its coupling to the elevator installation 1 and availability for use in accordance with the embodiments described herein.
  • a technician 20 may have installed the jumper 18 to service or repair the elevator installation 1.
  • the jumper 18 is already installed at a desired location to bridge a component of the elevator installation 1.
  • the technician 20 may keep the jumper 18 in a tool box.
  • the technician 20 may keep several jumpers 18 in a jumper kit 24, which is portable so that the technician 20 may carry it from one elevator installation 1 to another.
  • the jumper kit 24 is configured for radio communications.
  • the technician 20 carries a mobile device 22, e.g., a smartphone, a tablet PC, a laptop, a PDA, or another portable electronic device that assists the technician 20 to service the elevator installation 1.
  • a mobile device 22 e.g., a smartphone, a tablet PC, a laptop, a PDA, or another portable electronic device that assists the technician 20 to service the elevator installation 1.
  • Fig. 1 The exemplary elevator installation of Fig. 1 has guide rails for both the cabin 2 and the counterweight 4.
  • Fig. 1 shows a guide rail 16 for the counterweight 4 only, but not for the cabin 2; however, it is contemplated that the cabin 2 is guided by at least one guide rail as well.
  • a drive 8 is coupled to the suspension medium 10 and configured to act upon the suspension medium 10 to move the cabin 2 and the counterweight 4.
  • a deflection sheave 12 is positioned above the counterweight 4 to deflect the suspension medium 10 between the drive 8 and the counterweight 4, as shown in Fig. 1, so that the cabin 2 and the counterweight 4 can move along different paths without colliding.
  • An elevator controller 6 (in Fig.
  • the elevator controller 6 is configured to control and monitor the performance and operation of the elevator installation 1, as is known in the art.
  • the jumper 18 illustrated in Fig. 1 is provided with an electronic identification device 26 (hereinafter referred to as "ID device 26").
  • the ID device 26 includes in one embodiment a transmitter for electromagnetic waves and an associated electronic circuitry, e.g., to store data.
  • the ID device 26 may be provided with at least one of RFID (radio frequency identification), NFC (near field communication), Bluetooth, and cellular mobile communications technology.
  • the ID device 26 may communicate wirelessly with the mobile device 22, as indicated by a link L5, and/or the jumper kit 24, as indicated by a link L6. These links L5, L6 are described in more detail below with reference to Fig. 6.
  • the ID device 26 is comprised in a housing 19 from which connectors 18A, 18B of the jumper 18 extend.
  • Radio frequency communications technologies such as RFID, NFC and Bluetooth, are generally known to one of ordinary skill in the art; they are described herein only to the extent believed to be helpful for a full understanding of the various embodiments of the technology described herein.
  • the ID device 26 includes a memory (e.g., a memory chip) and an RFID transponder, which may be active (i.e., it is powered by an internal power supply (e.g., a battery)) or passive (i.e., it requires external supply of power).
  • the memory stores the jumper's unique identification (ID) number.
  • an RFID reader i.e., a transceiver
  • the RFID transponder when within radio range - responds by retrieving and transmitting e.g. the stored ID number; depending on a particular embodiment other or additional data may be transmitted as well.
  • the polling signal powers the RFID transponder.
  • a polling cycle may be defined for the RFID reader, wherein the polling cycle begins as soon as the technician 20 uses the jumper 18 and activates the mobile device 22, as described below. It is contemplated that polling may also be initiated by the technician 20, e.g., to locate the jumper 18 (which may then vibrate or sound). If the ID device 26 of the jumper 18 and the RFID reader are within radio range, the RFID reader receives the ID number via a radio communications link existing between them.
  • the ID device 26 includes a Bluetooth beacon.
  • Bluetooth Standard 4.0 Bluetooth Low Energy (BLE)
  • a Bluetooth beacon is an Enterprise Beacon available from Onyx Beacon Ltd., Romania. Such a beacon has a buzzer to emit an audible signal. Another example is a so-called iBeacon technology introduced by Apple, Inc., USA.
  • Fig. 2 is a schematic illustration of one embodiment of the jumper 18 having the housing 19 which comprises the ID device 26.
  • the jumper's (external) connectors 18A, 18B interface with the elevator installation 1 when in use.
  • the housing 19 includes two switches 9, 9a connected in series, a controller 11 , a power supply 13 (e.g., a battery), and the ID device 26.
  • the housing 19 may further include an ON/OFF switch 15.
  • the ID device 26 is shown as having a radio transceiver 7 (RF TX/RX), an antenna 3, and a memory 5.
  • the power supply 13 provides electrical energy (e.g., about 5 volts) to the electrical components of the jumper 18.
  • the jumper 18 may include a LED unit to indicate the status of the jumper 18.
  • the switches 9, 9a are interconnected between the connectors 18A, 18B and controlled by the controller 1 1 to either make (close) or break (open) the electrical connection between the connectors 18A, 18B.
  • Each switch 9, 9a therefore, has an open state or a closed state.
  • the controller 11 monitors the switch state of each switch 9, 9a to ensure the correct state is set.
  • the serially connected switches 9, 9a provide for redundancy and, hence, for increased safety: To make the electrical connection, both switches 9, 9a must be closed. If one switch 9, 9a fails to close, for example, no electrical connection can be made. Similarly, if both switches 9, 9a are closed and one fails to open, the electrical connection is broken by the properly working switch 9, 9a.
  • Each switch 9, 9a includes in one embodiment a relay, e.g., configured as an electromagnetic relay, or a solid state relay.
  • a relay e.g., configured as an electromagnetic relay, or a solid state relay.
  • an electromagnetic relay when activated, e.g., when an electric current passes through its coil, a generated magnetic field attracts a moveable contact to make the electrical connection between the connectors 18 A, 18B. If the coil is de-energized, the contact opens and breaks the electrical connection. This ensures that the switches 9, 9a are power loss safe. It is contemplated that in another embodiment, a single switch having two serially connected relays may be used.
  • the controller 1 1 is coupled to the switches 9, 9a, the power supply 13, and the ID device 26, in particular to the memory 5 and the radio transceiver 7 of the ID device 26.
  • the radio transceiver 7 is coupled to the antenna 3. It is contemplated that in another embodiment of the jumper 18, its components may be interconnected differently; for example, the power supply 13 may be connected to the ID device 26 and power the controller 11 via the ID device 26, or the memory 5 may be assigned to the controller 11, e.g., to be shared with the ID device 26.
  • the controller 11 includes in one embodiment a microcomputer 8051, e.g., available from Intel Corp.
  • the ID device 26 includes in one embodiment an RFID module, e.g., available from Winnix
  • the radio transceiver 7 in response to a (control or polling) signal received via the antenna 3, the radio transceiver 7 generates an output signal that is fed as an input signal to an input port of the controller 11.
  • the controller 11 processes that input signal to control the switches 9, 9a, e.g., to close or open the switches 9, 9a.
  • the technician 20 may trigger the opening and closing of the switches 9, 9a, e.g., at the start and end of a service job, their actual opening and closing of the switches 9, 9a occurs under control of the controller 11.
  • the controller 11 operates the switches 9, 9a without involvement of the technician 20.
  • the controller 11 records the switch status of the switches 9, 9a in the memory 5, and the radio transceiver 7 transmits the status of the switches 9, 9a, e.g., to the mobile device 22.
  • the jumper 18 can be activated and deactivated. In Fig. 2, this function is illustrated by the ON/OFF switch 15.
  • the ON/OFF switch 15 is connected to the power supply 13 to turn the power supply 13 and, hence, the jumper 18 on and off.
  • the ON/OFF switch 15 is a manually operable switch for the technician 20 to activate or deactivate the jumper 18.
  • the technician 20 may deactivate the jumper 18 before returning it to the jumper kit 24, e.g., to preserve electrical energy when the jumper 18 is not in use.
  • the memory 5 stores various kinds of data, e.g., the jumper's unique identification (ID) number or code, usage data, e.g., in form of a log file. Also, the memory 5 may record the status of the switches 9, 9a.
  • the controller 11 can access the memory 5 to retrieve data and/or to store data. For example, the controller 11 may retrieve stored data and cause the radio transceiver 7 of the ID device 26 to transmit that data.
  • the monitoring system is provided with a self-test feature that tests proper operation of a jumper 18 before it is used. For example, the jumper's controller 11 may activate the switches 9, 9a and verify the change from one switch state to the other switch state. The controller 11 may perform the self-test in response to trigger signal.
  • Fig. 3 is a schematic illustration of a mobile device 22 as one example of a monitoring device used by the technician 20 of Fig. 1.
  • the mobile device 22 is a smartphone having a display 36, a processor 39, a memory device 41 , and a transceiver 37 for communications within a cellular communications system.
  • Such a smartphone generally operates as is known in the art, e.g., it allows communications via voice, video, and/or text (e.g. using SMS (Short Messages Service)), and use of installed software applications (in singular form referred to as "app") for various purposes, such as position information via the global positioning system (GPS).
  • SMS Short Messages Service
  • app installed software applications
  • FIG. 3 depicts an exemplary view generated by a jumper app for use with the technology described herein.
  • the view includes various fields 38, 40, 42, 43 : field 38 shows which jumper 18 is currently in use, field 40 shows where it is located (installed), field 42 explains its purpose, and field 43 allows the technician 20 to activate or deactivate a certain jumper 18 (e.g., closing or opening the switches 9, 9a).
  • the view depicted in Fig. 3 is merely an example and that the jumper app may generate other configurations of the view and/or several pages for various features of the jumper app.
  • a main (or welcome) page may be presented when the jumper app starts. The main page requires the technician 20 to log in, e.g., by inputting a password and/or an email address.
  • Another page may allow the technician 20 to specify a maximum distance between the mobile device 22 and the jumper 18, and to specify the action in case the maximum distance is exceeded, e.g., jumper deactivation and/or alarm generation.
  • the alarm type may be specified, e.g., vibration, message, audio, and/ or light.
  • the maximum distance defines a predetermined radio range; if the distance between the mobile device 22 and the jumper 18 is greater than the maximum distance, the jumper 18 is deemed out of range. If the jumper 18 is in use, the jumper app deactivates the jumper 18 and/or generates an alarm according to the specified alarm type.
  • the mobile device 22 is equipped with a Bluetooth module.
  • Such a Bluetooth module is a standard equipment of a smartphone, and enables communications with other Bluetooth enabled devices, such as a Bluetooth enabled ID device 26 of the jumper 18. Using the display 36, the technician 20 can enable or disable the Bluetooth module.
  • the mobile device 22 is equipped with an RFID reader.
  • such an RFID reader may be configured as an attachment to a smartphone.
  • the mobile device 26 includes an RFID reader and a Bluetooth module.
  • the memory 41 of the mobile device 22 stores usage data of the jumperl 8, such as the identification number, a location of where the jumper 18 is used, date and time of its use, and a location of the mobile device 22. Some of that data may be entered by the technician 20, e.g., via the jumper app. The location data may be automatically entered using the GPS system of the mobile device 22.
  • several jumpers 18 may be organized in a jumper kit 24.
  • Fig. 4 is a schematic illustration of one embodiment of the jumper kit 24 used in one embodiment of the wire bridge monitoring system.
  • the jumper kit 24 has a housing 25 sized to receive several jumpers 18, for example, either loosely disposed or ordered in numbered compartments 17.
  • the jumpers 18 may be numbered or otherwise labeled to allow visual identification and verification.
  • the housing 25 includes five jumpers 18, whereas one jumper 18 has been removed (for illustrative purposes depicted via dashed lines).
  • each jumper 18 is provided with an ID device 26, as described above.
  • the ID device's radio transceiver is in Fig. 4 labeled as RF TX/RX.
  • the jumper kit 24 includes further a radio transceiver 28 (in Fig. 4 labeled as TX/RX), a power supply 27 (e.g. a battery), a memory 23, a processor 31, a position storing module 33, and an indicator 30, which are arranged in the housing 25.
  • the position obtained from the position storing module 33 may be included in a signal transmitted by the radio transceiver 28.
  • the indicator 30 may include at least one of a loudspeaker or buzzer 32, a light source 34 (e.g., an LED), or a display (e.g., an LCD display).
  • the jumpers 18 and the radio transceiver 28 communicate with each other using, e.g., RFID technology or Bluetooth technology, as described above, or any other suitable radio communications technology suitable. If the ID device 26 of the jumper 18 and the transceiver 28 are within radio range, the RF transceiver 28 receives the ID number via a radio communications link existing between them. As the RF transceiver 28 receives a response from each jumper 18 present in the jumper kit 24 any "missing" jumper 18 can be identified. As indicated by a symbol for a radio wave 29, the RF transceiver 28 not only communicates with the jumpers 18 of the jumper kit 25, but also with one or more other entities, as described below with reference to Fig. 6.
  • the transceiver 28 has in one embodiment a radio module to provide for communications over a WLAN/WiFi network or a cellular mobile communications network.
  • the jumper kit 24 and, hence, its jumpers 18 may be assigned to the technician 20.
  • the jumper kit 24 may have a number or code, e.g., a visible code or number on an outer surface, or an electronic number or code stored in the memory 23 coupled to the transceiver 28.
  • the RF transceiver 28 can retrieve and transmit that number or code according to a preset schedule or in response to a received request.
  • the memory 23 may further store usage data, e.g., such as described above with reference to the memory 41.
  • the system tracks if the technician's mobile device 22 leaves the radio range while the jumper 18 is still in use, and deactivates the jumper 18 that is still in place while the technician 20 may have left.
  • deactivating the jumper 18 may be combined with generating an alarm if the mobile device 22 is out of radio range.
  • the system uses the jumper kit 24 to track use of a jumper 18 and to deactivate any jumper 18 that is still in place while the technician 20 may have left the site.
  • the system provides for reinitiating the jumper 18 after having been deactivated. It is contemplated that in certain embodiments these scenarios may occur in combination.
  • Fig. 5 shows a flow diagram of one embodiment of a method of operating the wire bridge monitoring system.
  • the technician 20 is at the site of an elevator installation 1 with the technician-carried mobile phone 22 running the jumper app and being provided with an
  • the flow diagram starts at a step Al and ends at a step A12. Proceeding to a step A2, the method receives a radio signal 21 comprising the jumper's ID number from the jumper 18 when within the predetermined radio range.
  • the jumper's RF transceiver 7 transmits the radio signal, e.g., in response to being polled by the mobile phone's RFID reader. The polling may occur at predetermined intervals, e.g., every few seconds.
  • the technician 20 is in proximity of the jumper 18.
  • the technician 20 may still handle the jumper 18 to prepare its installation, or may have already installed the jumper 18 and work in its proximity. In the latter situation, the switches 9, 9a are closed.
  • the jumper's controller 1 1 records the transmission of the radio signal, and determines that the technician 20 is close as long the polling takes place. Proceeding to a step A3, the method records use of the wire bridge 18 by the technician 20. The use may be recorded in a log file maintained, e.g., in the mobile device's memory 41.
  • the use is based on the received radio signal 21 because, e.g., once the technician 20 is done inputting data regarding the use of the jumper 18, receipt of the radio signal 21 is considered to be the beginning of the jumper's use.
  • the jumper app may display a signal strength of the received radio signal 21 and, e.g., a charge state if a battery-powered Bluetooth beacon or an active RFID tag are used. Proceeding to a step A4, the method monitors the radio signal 21 (link L5).
  • the mobile device 22 may monitor the received signal strength as a function of time to determine if the jumper 18 remains within the predetermined radio range.
  • the mobile device 22 receives the radio signal 21 as long as the technician 20 is in proximity of the jumper 18, i.e., while the distance between them is less than the predetermined maximum distance.
  • the controller 11 of the jumper 18 also monitors transmission of the radio signal which occurs while the distance between the jumper 18 and the mobile device 22 is less than the predetermined maximum distance. If the maximum distance is exceeded, the ID device 26 no longer receives the polling signal from the mobile device 22.
  • step A5 if the method determines based on the receipt of the radio signal that the jumper 18 is within the predetermined radio range, the method proceeds along the Yes branch to a step A6.
  • step A6 the method determines that the technician 20 is present and that, therefore, no potentially critical situation exists regarding the use of the jumper 18. If the technician 20 no longer needs the jumper 18, the technician is supposed to remove the jumper 18 and to use, e.g., the jumper app to check the jumper 18 in. After such check in, the log file is updated and the jumper 18 is no longer recorded as being used. The method ends in step A12.
  • step A5 the method determines based on the absence of a received radio signal that the jumper 18 is not within the predetermined radio range
  • the method proceeds along the No branch to a step A7.
  • step A7 the method determines - again preferably based on the absence of a received radio signal - that the technician 20 is not present.
  • the technician 20 may have left the site for the day, or may have temporarily left the immediate vicinity of the jumper 18. Proceeding to a step A8, if the absence of the technician 20 is determined in step A7, the method deactivates the jumper 18.
  • the controller 11 monitors the activity of the ID device 26, the controller 11 determines that the jumper 18 must be deactivated. For that purpose, the controller 11 generates a control signal causing the switches 9, 9a to open, and, hence, to brake the electrical connection.
  • the method may include an (optional) alarm procedure.
  • the method determines if the jumper 18 is still recorded as being used. For example, if the technician 20 properly checked in the jumper 18 after its use, the log file no longer shows the jumper 18 as being used. In that case, the absence of the technician 20 is not critical and regarding the monitoring of the jumper use all is in order. The method proceeds along the No branch to the end at step A12.
  • step A9 the method determines that the jumper 18 is recorded as being used, a critical situation may exist because the jumper 18 is still in use, but the technician 20 is no longer present. For example, the technician 20 may have forgotten to remove the jumper 18 at the end of the service. In that case, the method proceeds along the Yes branch to a step Al 0.
  • the method generates an alarm.
  • the alarm is communicated to the technician 20 using the mobile device 22.
  • the mobile device 20 may display a text message (alone or in combination with symbols or light effects), vibrate, generate an audio message, or a combination thereof.
  • the alarm may be communicated to the technician's supervisor, e.g., in a manner that corresponds to the manner the alarm is communicated to the technician 20, for example, via a mobile device assigned to the supervisor.
  • the method determines if the alarm is confirmed.
  • the alarm requires a response or action either by the technician 20 or the supervisor. For example, if the technician 20 forgot to remove the jumper 18, the technician 20 is required to confirm that the jumper 18 has been removed, or will be removed shortly. In some situations, it may be justified to leave the jumper 18 in place. In such a situation, however, the technician 20 may be required to report a justification, if any, for leaving the jumper 18 on site to the supervisor. The supervisor may accept such an explanation and disable the alarm. The method ends in step A12.
  • the controller 11 deactivates the jumper 18 automatically on its own without requiring a control signal from an external source. This ensures that the elevator installation 1 is set back to a safe condition even though the technician 20 has left the site and may have been alerted by an alarm procedure of steps A9 - Al 1. As mentioned above, however, it may be justified to leave the jumper 18 in place. In such a situation, the supervisor at a remote control center may disable the automatic deactivation of the jumper 18. For example, if the jumper kit 24 is still close to the jumper 18, the control center may contact the jumper kit 24 which then causes the jumper's controller 11 to disable the automatic deactivation.
  • the technician 20 may remove the jumper 18.
  • the technician 20 may reactivate/reinitiate the jumper 18 again.
  • the technician 20 must be at a location so that the distance between the jumper 18 and the mobile device 22 is less than the predetermined maximum distance.
  • the technician 20 may touch the field 43 on the mobile device 22 to cause its transceiver 37 to transmit an activation signal to the ID device 26.
  • the activation signal may include a predefined sequence of polling signals, or a message in accordance with a predetermined RF protocol. Once the controller 11 recognizes the sequence or the message as an activation signal, the controller 11 generates a control signal that causes closing of the switches 9, 9a. The jumper 18 is then activated again.
  • Fig. 6 is a schematic illustration of exemplary interactions between components used in connection with one embodiment of the wire bridge monitoring system. It is contemplated that in certain embodiment, fewer components and fewer interactions may be present.
  • the embodiment of Fig. 6 depicts the jumper 18, its ID device 26, the jumper kit 24, the mobile device 22, a log (or logging) server 46 and a control center 44.
  • the log server 46 is a computer especially configured to maintain a log file that records events and processes occurring in the wire bridge monitoring system.
  • the log file may be stored in a database 48.
  • exemplary events are the removal of a jumper 18 from the jumper kit 24, and its return. Associated with these events, the log file includes the ID of the jumper 18 (hereinafter referred to as jumper ID), and the identification of the technician 20 to which the jumper 18 is assigned. Each event or process is recorded with a time stamp (date and time).
  • the log server 46 may be maintained by the company that installed the elevator installation 1 and/or services the elevator installation 1. Its database 48 maintains records with details regarding serviced elevator installations 1 (e.g., locations, service records), names of its technicians 20, their contact information (e.g., device numbers or phone numbers of their mobile devices 22, or e-mail addresses), jumper kits 24 assigned to the technicians 20, IDs of the jumpers 18 assigned to each jumper kit 24. For example, if the ID of a jumper 18 is known, the database 48 allows identification of the jumper kit 24 to which this jumper 18 belongs and to which technician 20 the jumper kit 24 is assigned.
  • the control center 44 represents in one embodiment, a computing device of the technician's supervisor.
  • the computing device may be also a mobile device, such as a smartphone, or a stationary computer at a service headquarters.
  • the communications network 50 may include a LAN, a WAN, the internet, which may include wired or wireless networks (e.g., WLAN/WiFi), and/or a cellular communications network for mobile communications, such as for UMTS or 4G.
  • a LAN local area network
  • a WAN wide area network
  • the internet may include wired or wireless networks (e.g., WLAN/WiFi), and/or a cellular communications network for mobile communications, such as for UMTS or 4G.
  • WLAN/WiFi wireless local area network
  • a cellular communications network for mobile communications such as for UMTS or 4G.
  • a communications link LI may exist between the jumper kit 24 and the communications network
  • a communications link L2 may exist between the log server 46 and the communications network 50,
  • a communications link L3 may exist between the control center 44 and the communications network 50,
  • a communications link L4 may exist between the mobile device 22 and the communications network 50,
  • Another communications link L5 may exist between the mobile device 22 and the ID device 26 of the jumper 18 (an embodiment involving the link L5 is described above with reference to Fig. 5),
  • yet another communications link L6 may exist between the jumper kit 24 and the ID device 26 of the jumper 18 (an embodiment involving the link L6 is described below with reference to Fig. 7),
  • a communications link L7 may exist between the jumper kit 24 and the mobile device 22, without involving the communications network 50, and - depending on a particular embodiment, communications links L8, L9 may exist between the elevator controller 6 and the jumper kit 24, and the elevator controller 6 and the communications network 50, respectively. Via these communications links L8, L9, information regarding jumper location, purpose and state (inactive/active) could be communicated to the elevator controller 6 to allow monitoring the functions to be disabled.
  • communications links LI - L6 enable bidirectional communications between the respective components.
  • the radio transceiver 28 of the jumper kit 24 detects, for example, that a jumper 18 is removed, that event is communicated to the log server 46 via the communications links LI, L2. Depending on a particular embodiment, that event may also be reported to the technician's supervisor via the communications links LI, L3. Corresponding communications take place when the jumper 18 is returned to the jumper kit 24.
  • the jumper kit 24 of Fig. 4 is used. The jumper kit 24 can be used in a scenario where the jumper kit 24 is left on site, but loses
  • the jumper 18 is deactivated and/or the jumper kit 24 contracts the remote control center to report the loss of communication and request instructions.
  • the jumper kit 24 may be used in a scenario where the technician 20 moves the jumper kit 24 away from the jumper 18 and, hence, the jumper kit 24 loses communication to the jumper 18. In that scenario, the jumper 18 is deactivated. In these scenarios, the jumper kit 24 monitors the jumper 18 via the communications link L6. It is assumed that the jumper kit 24 remains within radio range while the jumper 18 is in use.
  • the jumper kit 24 can deactivate the jumper 18 (e.g., in case of a forgotten jumper 18), activate (e.g., after installation), and reactivate the jumper 18 (e.g., after deactivation).
  • the jumper kit 24 can communicate with the mobile device 22 directly via the communications link L7 (e.g., while the mobile device 22 is close enough for communications based on RFID, Bluetooth, or WiFi technology). Once this communications link L7 is interrupted, the mobile device 22, and, hence, the technician 20 may be deemed to have left the site. In that case, the jumper kit 24 generates a deactivation signal and sends it to the jumper's ID device 26. In response, the jumper's controller 11 causes the switches 9, 9a to open.
  • the mobile device 22 registers its GPS location and loads it into the position storing module 33 of the jumper kit 24.
  • the mobile device 22 tracks its own location and the location of the jumper kit 24. If the positions are not aligned, an alert is generated.
  • the jumper kit 24 may communicate with the mobile device 22 indirectly via the communications network 50 involving the communications links LI and L4.
  • the determination of whether or not the mobile device 22, and, hence, the technician 20 are still close to the jumper 18 may include processing location information, e.g., obtained from the mobile device's GPS system and/or the positioning system 33 of the jumper kit 24.
  • the mobile device 22 (knowing its own (GPS) position) receives a signal from the jumper kit 24 via the communications links LI , L4 that includes the position of the jumper kit 24.
  • the mobile device 22 processes the positions and determines whether or not a predetermined maximum distance between the positions is exceeded. If this is the case, the mobile device 22 sends a message to the jumper kit 24 that triggers within the jumper kit 24 the generation of the deactivation signal and its sending to the jumper's ID device 26.
  • the processing of the positions may be performed by the jumper kit 24.
  • the jumper kit 24 receives the position of the mobile device 22 and determines whether or not a predetermined maximum distance between its position and the position of the mobile device 22 is exceeded. If this is the case, the above described deactivation signal is generated and sent to the jumper 18.
  • the distance between the mobile device 22 and the jumper kit 24 is the decisive criterion for determining if the jumper 18 needs to be deactivated to ensure safe operation of the elevator installation 1. Accordingly, in one embodiment, that distance is also the criterion for reactivating a previously deactivated jumper 18. That is, the mobile device 22 must be closer than the predetermined maximum distance to allow reactivation of the jumper 18. For example, once that requirement is met, the technician 20 may use the jumper app on the mobile device 22 to select the jumper 18 (e.g., using the field 43 shown in Fig. 3) that is to be reactivated.
  • the jumper app causes the mobile device 22 to send a message to the jumper kit 24, which in response generates an activation signal for the (identified) jumper 18 and sends it to the jumper's ID device 26.
  • the jumper's controller 1 1 causes the switches 9, 9a to close. It is contemplated that the technician 20 repeats this procedure for each jumper 18 that needs to be (re)activated.
  • a changing operating state of the jumper 18 may be communicated to the elevator controller 6, e.g., either directly from the jumper kit 24 via the communications link L8, or indirectly via the communications network 50 and the communications link L9.
  • the jumper kit 24 and the mobile device 22 may communicate via the communications network 50 with the elevator controller 6. If, for example, the jumper kit 24 deactivates the jumper 18, the jumper kit 24 communicates the jumper's deactivation to the elevator controller 6. Similarly, the jumper kit 24 communicates in one embodiment the reactivation of the jumper 18 to the elevator controller 6. In response to a deactivation, the elevator controller 6 may switch the elevator installation 1 into an out of service mode which prevents unsafe motion until such time as the technician 20 returns and reactivates the jumper 18.
  • Fig. 7 shows a flow diagram of one embodiment of a method of operating the wire bridge monitoring system, in which the jumper kit 24 of Fig. 4 is used. It is assumed that the technician 20 is at the site of an elevator installation 1 with the jumper kit 24 assigned to the technician 20 being in an active (powered) mode and the technician-carried mobile phone 22 running the jumper app. It is contemplated that in another illustration some of the shown steps may be merged into a single step, and a step may be split into two or more steps.
  • the flow diagram starts at a step SI and ends at a step S l l .
  • RSSI received signal strength indicator
  • the indicator 30 shown in Fig. 4 indicates the absence of the jumper 18 either visually or acoustically.
  • the transceiver 28 still receives the IDs of the remaining jumpers 18 in the jumper kit 24.
  • the detected absence of the jumper 18 triggers a logging mechanism, which includes sending the ID of the removed jumper 18 to the logging server 46 by the transceiver 28, e.g., via the communications links LI, L2 of Fig. 6.
  • the transceiver 28 is set up to initiate such sending automatically as soon as a change of the number of received jumper IDs is detected.
  • the communications link L5 shown in Fig. 6 exists between the mobile device 22 and the jumper 18.
  • the method includes identifying, by the log server 46, the jumper ID sent by the transceiver 28.
  • a software program being executed in the log server 46 uses the jumper ID to access the database 48 and to retrieve information that identifies the jumper kit 24 to which the jumper ID is assigned and the technician 20 to which the jumper kit 24 is assigned. With the technician 20 being identified, the technician's contact information (e.g., phone number) is available as well.
  • the method includes sending a message to the technician's mobile device 22.
  • the message may be a text message (e.g., based on the Short Message Service (SMS)) sent to the phone number (e.g. obtained in the step S3) assigned to the mobile device 22.
  • SMS Short Message Service
  • the text message requests the technician 20 to provide use particulars for the jumper 18, e.g., location and purpose of the use.
  • the message may start the jumper app which then requests input of the use particulars from the technician 20, e.g., via the fields 40, 42 shown in Fig. 3.
  • the method includes receiving use particulars.
  • the jumper app may prompt the technician 20 to enter the location of the jumper 18 via the field 40, and to specify its purpose via the field 42.
  • the mobile device 22 may receive the jumper ID directly from the jumper 18. In that case, the jumper app may automatically provide the jumper ID to the field 38. In the alternative, the jumper ID may be entered by the technician 20.
  • the jumper app causes the mobile device 22 to send the use particulars to the log server 46 where it is logged.
  • the method includes sending the use particulars received in step S5 to the control center 44.
  • the control center 44 is in one embodiment a computing device of the technician's supervisor. It is contemplated that in certain embodiments it may not be necessary or desired to inform the supervisor and that, therefore, step S6 may be omitted. In that case, the monitoring function by the supervisor is disabled. The situations that allow such disabling may be defined by an administrator of the application. Proceeding to a step S7, the method checks if the jumper 18 has been returned to the jumper kit 24. In one embodiment, that checking is performed by the log server 46 at regular intervals. The software program of the log server 46 monitors the status of the jumper 18 recorded in the log file.
  • a jumper 18 that is currently in use may be considered to having a status "in use”.
  • the technician 20 is supposed to remove the jumper 18 from the elevator installation 1 and to return it to the jumper kit 24.
  • the transceiver 28 detects its presence and sends a message with the jumper ID to the log server 46.
  • the log server 46 records the return of the jumper 18 and sets the jumper's status to "not in use.” The method then proceeds along the Yes branch to the end of the method in step S 11.
  • the log server 46 will continue showing the jumper 18 with a status "in use," i. e., as being used at the previously specified location in the elevator installation 1 by the technician 20. In that case, the method proceeds along the No branch to a step S8.
  • the method includes determining if the technician 20 is still on site, which is an indication of whether or not the technician 20 finished servicing the elevator installation 1.
  • the method verifies if the communications link L7 shown in Fig. 6 still exists between the mobile device 22 and the jumper kit 24. If this is the case, the technician 20 is still working in close proximity of the jumper 18 and is not yet done servicing the elevator installation 1. The method is in a waiting loop along the NO branch back to step S7 until the service is done. If, however, the communications link L7 no longer exists, it is assumed that the technician 20 is no longer on site and may have finished the service. The method proceeds along the No branch to a step S9.
  • the mobile device 22 or the jumper kit 24 may process location information of the mobile device 22 and the jumper kit 24, as described above.
  • the positioning system may not be precise enough to determine if the technician 20 is in close proximity of the jumper 18, but sufficiently precise to determine whether or not the technician 20 is still at the site of the elevator installation 1.
  • the method determines that the jumper 18 must be deactivated to prevent a potentially unsafe operation of the elevator installation 1. Either triggered through its own location processing, or through a message from the mobile device 22, the jumper kit 24 generates the deactivation signal and sends it to the jumper's ID device 26.
  • the jumper's controller 11 causes the switches 9, 9a to open, as described above.
  • the method ends in step S12.
  • the deactivation of the jumper 18 may be accompanied by an (optional) alarm procedure, which may be initiated at substantially the same time as the jumper deactivation of Step S9. Proceeding to a step S10, the method sends a warning message to the technician's mobile device 22.
  • the warning message is sent to clarify a potentially critical situation: the technician 20 is no longer on site (see step S8) and the jumper 18 has not been returned (see step S7).
  • the message may be presented to the technician 20 via a text message or the jumper app.
  • the message informs the technician 20 that the jumper 18 has not yet been returned to the jumper kit 24. Further, the message may require the technician 20 to return the jumper 18 or to explain why it is still in use, e.g., via the jumper app or a phone call with the supervisor.
  • a message is also sent to the jumper kit 24 to activate the indicator 30. This may serve as an additional measure to remind the technician 20 of the missing jumper 18.
  • the jumper kit 24 may activate the indicator 30 as soon as it sends the deactivation signal to the jumper 18. The activated indicator 30 indicates that the jumper 18 has been deactivated.
  • a corresponding warning message may also be sent to the control center 44 to inform the technician's supervisor. Sending the warning message to the control center 44 is an additional safety measure that ensures other persons are made aware of the potentially critical situation just in case the technician 20 does not receive the warning message or cannot act upon it.
  • the supervisor may then cause a control signal to be sent to the jumper kit 24 that triggers the deactivation of the jumper 18.
  • the jumper kit 24 may be configured to confirm deactivation of the jumper 18 to the supervisor. This provides an additional level of safety.
  • the method receives a confirmation regarding the warning message sent in step S9.
  • the warning message requires a response or action either by the technician or the supervisor.
  • the technician 20 may be required to report back the justification, if any, for leaving the jumper 18 or the jumper kit 24 on site. If the technician 20 forgot to remove and return the jumper 18, the technician 20 is required to confirm that the jumper 18 has been returned or will be removed and returned shortly. In that case, the method proceeds to step S7 and will detect the return of the jumper 18, as described above.
  • the elevator installation 1 may be provided with an additional feature.
  • the jumper kit 24 interacts with the elevator controller 6, e.g., via the communications link L8, to register use of a jumper 18 with the elevator controller 6.
  • the elevator controller 6 is configured to adapt the operation of the elevator installation 1 when a jumper 18 is in use.
  • the elevator controller 6 may temporarily disable a door lock monitor of the elevator installation 1.
  • a door lock monitor automatically takes the elevator installation 1 out of normal operation when recognizing, for example, bypass/short circuit of door locks or car gate switches.
  • the elevator controller 6 may increase vigilance of the monitoring of other signals to ensure that safe operation of the elevator installation 1 is maintained.
  • logging and tracking the use of a jumper 18 reduces the potential risks associated with a jumper 18 being left in place after servicing the installation.
  • control of the jumper's use is performed by the jumper 18 itself through monitoring its distance to the mobile device 22.
  • monitoring and control of the jumper's use is performed using the jumper kit 24.
  • the monitoring and the associated jumper app running on the mobile device 22 can be configured for certain functionalities that further assist the monitoring.
  • the jumper app may display various buttons to be clicked when needed.
  • the log file may be used to identify the time a communication with the jumper 18 broke down and where the mobile device 22 was located at that time. This provides information about where the jumper 18 was last "seen.”
  • the mobile device 22 may cause (e.g., by emitting a polling signal) any ID device 26 within radio range to vibrate or to emit a sound. The technician 20 can then follow the sound and find the jumper 18.
  • the mobile device 22 can generate and display a warning message if the jumper 18 and the mobile device are too far apart and the communication breaks down.
  • the jumper app may also display a history of the jumper's use over time.

Landscapes

  • Alarm Systems (AREA)

Abstract

La présente invention concerne un système de contrôle de pont à fil comprenant un pont à fil (18) et un dispositif de contrôle (22, 24). Le pont à fil (18) est utilisé pour ponter un composant d'une installation électromécanique (1) et comprend un dispositif d'identification électronique (26) configuré pour transmettre un signal radio (21) comprenant un numéro d'identification du pont à fil (18), un commutateur (9, 9a) présentant un état ouvert et un état fermé pour établir ou interrompre une connexion électrique, et un dispositif de commande (11) couplé au dispositif d'identification (26) et au commutateur (9, 9a) pour commander le commutateur (9, 9a) en réponse au signal de commande reçu. Le dispositif de contrôle (22, 24) comprend un émetteur-récepteur (28, 37), une mémoire (23, 41) et un processeur (31, 39). L'émetteur-récepteur (28, 37) reçoit le signal radio (21) transmis par le dispositif d'identification électronique (26) lorsqu'il est compris dans une plage radio prédéterminée, et la mémoire (23, 41) enregistre l'utilisation du pont à fil (18). Le processeur (31, 39) contrôle si le pont à fil (18) est compris dans la plage radio prédéterminée et génère un signal de désactivation si le pont à fil (18) n'est pas compris dans la plage radio prédéterminée, l'émetteur-récepteur (28, 37) étant configuré pour transmettre le signal de désactivation en tant que signal de commande au pont à fil (18).
PCT/EP2017/066948 2016-07-21 2017-07-06 Contrôle et exploitation de systèmes de pont à fil électroniques WO2018015171A1 (fr)

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EP16180552.8 2016-07-21
EP16180552 2016-07-21

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Publication number Priority date Publication date Assignee Title
WO2020124547A1 (fr) * 2018-12-21 2020-06-25 深圳技术大学（筹） Procédé et appareil de surveillance de défauts de rencontre d'ascenseur avec la fosse ou le toit
US11034545B2 (en) 2018-03-26 2021-06-15 Otis Elevator Company Method and system for brake testing an elevator car
US11548761B2 (en) * 2018-07-31 2023-01-10 Otis Elevator Company Detecting elevator mechanics in elevator systems

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WO2011090665A2 (fr) 2010-01-22 2011-07-28 Otis Elevator Company Outil de court-circuit de circuit de sécurité d'ascenseur
CN203699586U (zh) * 2013-12-27 2014-07-09 三菱电机上海机电电梯有限公司 电梯安全短接装置
US20160267767A1 (en) * 2015-03-10 2016-09-15 Thyssenkrupp Elevator Ag Jumpers and methods of making and using same

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US20090121731A1 (en) 2007-11-08 2009-05-14 Wurth Steven P Diagnostic jumper
US20100217406A1 (en) * 2009-02-25 2010-08-26 Berry Jr Robert Joseph Universal remote machinery controller and monitor
WO2011090665A2 (fr) 2010-01-22 2011-07-28 Otis Elevator Company Outil de court-circuit de circuit de sécurité d'ascenseur
CN203699586U (zh) * 2013-12-27 2014-07-09 三菱电机上海机电电梯有限公司 电梯安全短接装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11034545B2 (en) 2018-03-26 2021-06-15 Otis Elevator Company Method and system for brake testing an elevator car
US11548761B2 (en) * 2018-07-31 2023-01-10 Otis Elevator Company Detecting elevator mechanics in elevator systems
WO2020124547A1 (fr) * 2018-12-21 2020-06-25 深圳技术大学（筹） Procédé et appareil de surveillance de défauts de rencontre d'ascenseur avec la fosse ou le toit

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