WO2024106042A1 - Système d'inspection à distance d'ascenseur et procédé d'inspection à distance d'ascenseur - Google Patents

Système d'inspection à distance d'ascenseur et procédé d'inspection à distance d'ascenseur Download PDF

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Publication number
WO2024106042A1
WO2024106042A1 PCT/JP2023/035881 JP2023035881W WO2024106042A1 WO 2024106042 A1 WO2024106042 A1 WO 2024106042A1 JP 2023035881 W JP2023035881 W JP 2023035881W WO 2024106042 A1 WO2024106042 A1 WO 2024106042A1
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WIPO (PCT)
Prior art keywords
floor
car
signal
elevator
remote inspection
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PCT/JP2023/035881
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English (en)
Japanese (ja)
Inventor
英典 山▲崎▼
ヴァン マイン グエン
Original Assignee
三菱電機ビルソリューションズ株式会社
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Publication of WO2024106042A1 publication Critical patent/WO2024106042A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
    • 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

Definitions

  • This disclosure relates to a remote elevator inspection system and a remote elevator inspection method for performing remote inspection of elevators.
  • the present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an elevator remote inspection system and elevator remote inspection method that can perform remote inspection as easily as possible for various elevators with different communication specifications and signal specifications.
  • the elevator remote inspection system is a system for remotely inspecting elevators.
  • the elevator remote inspection system includes an instruction unit, an acquisition unit, a control unit, and an output unit.
  • the instruction unit performs a transmission process for transmitting a hall call signal that generates an elevator hall call to the elevator equipment group.
  • the acquisition unit acquires, as a judgment signal, a signal that is input/output by parallel transmission between the elevator equipment group and a control panel that controls the elevator equipment group.
  • the control unit generates a hall call signal that is transmitted by the transmission process, and performs a judgment process for judging an inspection item for the remote inspection based on the judgment signal acquired by the acquisition unit as a result of the transmission process.
  • the output unit outputs the judgment result of the inspection item.
  • the transmission process is a process for transmitting a first hall call signal that generates a first hall call in an upward direction on the first floor, and a second hall call signal that generates a second hall call in a downward direction on a second floor that is higher than the first floor.
  • the determination signal includes a first signal indicating either a first state in which the car is located within a door zone that indicates a positional range of the car in which the elevator car doors can be opened and closed, or a non-first state that is not the first state.
  • the inspection items include the state of a car call button that generates a car call.
  • the control unit uses information including the first signal to identify the correspondence between the car's position between the first floor and the second floor and the time. Based on the correspondence, the control unit determines that the state of the car call button is normal when it determines that the car has traveled back and forth between the first floor and the second floor without stopping at a floor between the first floor and the second floor.
  • the remote elevator inspection method is a method for remotely inspecting an elevator.
  • the remote elevator inspection method includes a step of performing a transmission process of transmitting a hall call signal that generates a hall call for the elevator to an equipment group of the elevator, a step of acquiring a signal input/output by parallel transmission between the equipment group of the elevator and a control panel that controls the equipment group of the elevator as a judgment signal, a step of generating a hall call signal transmitted by the transmission process, and a step of performing a judgment process of judging an inspection item of the remote inspection based on the judgment signal acquired by the step of acquiring a result of the transmission process, and a step of outputting the judgment result of the inspection item.
  • the transmission process is a process of transmitting a first hall call signal that generates a first hall call in an upward direction on the first floor, and a second hall call signal that generates a second hall call in a downward direction on a second floor above the first floor.
  • the judgment signal includes a first signal that indicates either a first state in which the car is located within a door zone that indicates a position range of the car in which the doors of the elevator car can be opened and closed, or a non-first state that is not the first state.
  • the inspection items include the state of a car call button that generates a car call.
  • the step of performing the judgment process includes a step of identifying a correspondence between the position of the car between the first floor and the second floor and time using information including the first signal, and a step of judging that the state of the car call button is normal when it is determined based on the correspondence that the car has traveled back and forth between the first floor and the second floor without stopping at a floor between the first floor and the second floor.
  • remote inspection can be performed as simply as possible for various elevators with different communication and signal specifications.
  • multi-brand maintenance can be achieved in remote inspection. This allows maintenance companies to reduce the frequency of maintenance inspections at the maintenance site and increase the number of elevators that can be maintained. Building owners can freely select a maintenance company and enter into a maintenance contract that allows for remote inspection.
  • FIG. 1 is a diagram showing an example of the overall configuration of an elevator system and a remote inspection system.
  • FIG. 1 is a diagram showing an example of connecting a conventional remote inspection system to an elevator system.
  • FIG. 1 is a diagram illustrating an example of a hardware configuration of an elevator system.
  • FIG. 1 is a diagram showing a schematic structure of an elevator.
  • FIG. 2 is a diagram showing an example of an elevator hall.
  • FIG. 2 is a diagram showing an example of the inside of an elevator car.
  • FIG. 13 is a diagram illustrating an example of a hardware configuration of an elevator system according to a modified example. 2 is a diagram for explaining a hardware configuration of the remote inspection system and signals used in the remote inspection system.
  • FIG. FIG. 13 is a diagram for explaining the relationship between car travel and signals during diagnostic operation.
  • FIG. 1 is a diagram illustrating an example of a functional block diagram of a remote inspection system.
  • FIG. 2 is a diagram showing an example of a display screen of the remote inspection system.
  • 13 is a flowchart of a remote inspection process and a terminal setting process.
  • FIG. 13 is a diagram illustrating an example of a reference time DB.
  • 13 is a flowchart of a reference time update process.
  • 13 is a flowchart of a reference time acquisition process.
  • 4 is a timing chart for explaining a running state. 4 is a timing chart for explaining a running state.
  • FIG. 13 is a diagram for explaining determination of the state of a car call button.
  • FIG. 13 is a diagram for explaining determination of the state of a car call button.
  • FIG. 13 is a diagram for explaining determination of the state of a car call button.
  • 13 is a diagram for explaining determination of the state of a car call button. 4 is a flowchart of a driving diagnosis process. 13 is a flowchart of a traveling occurrence process. 13 is a flowchart of a car information measurement process. 13 is a flowchart of a determination process. 13 is a flowchart of a multi-car process.
  • FIG. 1 is a diagram showing an example of the overall configuration of an elevator system 200 and a remote inspection system 1.
  • an elevator If an elevator is installed in a building, the building owner must enter into a maintenance contract with an elevator maintenance company. Maintenance staff from the maintenance company will perform maintenance inspections and regular inspections of the elevator based on the maintenance contract. When entering into a maintenance contract, the building owner can also include remote inspection or remote monitoring as an option.
  • Remote monitoring refers to a maintenance company's monitoring center (information center) etc. constantly monitoring the elevator for any abnormalities or malfunctions using communication lines etc.
  • Remote inspection refers to, in addition to remote monitoring, a maintenance company's monitoring center etc. inspecting the areas required for normal elevator operation to see if the elevator's operating status and the operating status of each piece of equipment are normal, using communication lines etc.
  • Remote inspections include three types of elevator inspections: performance inspections, inspections of each piece of equipment, and inspections of usage status.
  • Performance inspections involve inspections of the car's start-up state, accelerating running state, constant speed running state, decelerating running state, and landing state.
  • Equipment inspections involve inspections of the machine room or control panel temperature, the state of the control equipment, the state of the destination floor button in the car, the state of the intercom, the state of the doors opening and closing, the state of the landing button, the state of the door switch, and whether there are any abnormalities in the electromagnetic brakes.
  • Usage inspections involve inspections of the car's travel distance, travel time or number of starts, and the number of times the doors are opened and closed.
  • the remote inspection system 1 of this embodiment is a system for remotely inspecting elevators that is configured to meet these needs. It will be described in detail below.
  • the remote inspection system 1 includes a remote inspection device 100, a management server 300, and a terminal 400.
  • An elevator system 200 and the remote inspection device 100 are installed in a building 2.
  • the remote inspection device 100 is connected to the elevator system 200 and performs remote inspection of the elevators.
  • the remote inspection device 100 is configured to include, for example, a PLC (Programmable Logic Controller).
  • the management server 300 is installed, for example, in an information center (monitoring center) of a maintenance company.
  • the terminal 400 may be installed in the information center of the maintenance company, or in any other location.
  • the terminal 400 and the remote inspection device 100 can be connected to the management server 300 via a communication line.
  • the management server 300 manages various data such as customer information for each building that has an elevator maintenance contract, building information, information on the elevators installed in the building, and remote inspection results.
  • the management server 300 is a device that manages the remote inspection device 100, and transmits commands to the remote inspection device 100 to perform remote inspections, and obtains the inspection results of remote inspections performed by the remote inspection device 100.
  • the terminal 400 is, for example, a PC (Personal Computer), a smartphone, or a tablet.
  • the terminal 400 includes a display unit 410 that displays various information, and an input unit 420 that can input operations from a user who uses the terminal 400.
  • the terminal 400 is used by a maintenance worker of a maintenance company.
  • the "user" who uses the terminal 400 refers to a maintenance worker of the maintenance company, but is not limited to this, and may include any person who may use the terminal 400.
  • the user may be an employee other than the maintenance worker of the maintenance company, or may be a person who manages the building 2.
  • the terminal 400 can perform a remote inspection of the remote inspection device 100 via the management server 300 by the maintenance worker's operation from the input unit 420.
  • the terminal 400 can display the inspection results of the remote inspection performed by the remote inspection device 100 on the display unit 410.
  • the elevator system 200 includes a control panel 210 and an elevator equipment group 220.
  • the elevator equipment group 220 is made up of various equipment including elevators and elevator hall devices.
  • the control panel 210 controls the various equipment in the elevator equipment group 220.
  • the control panel 210 inputs and outputs signals to and from the elevator equipment group 220 via multiple signal lines.
  • the signals transmitted and received between the elevator equipment group 220 and the control panel 210 include those transmitted and received by parallel transmission (parallel communication) and those transmitted and received by serial transmission (serial communication).
  • the former (parallel transmission) is, for example, a signal obtained directly from various switches or various sensors of the elevator equipment group 220.
  • a switch contact signal (for example, a predetermined voltage is detected when the switch is ON) is assumed, but it may also be, for example, a pulse signal obtained from a rotary encoder.
  • serial transmission is a signal sent and received by serial communication between the control panel 210 and a control board provided in a device installed on the elevator landing side or car side.
  • a scenario can be envisioned in which communication is established between elevator management software (program) running on the control panel 210 and software (program) running on the control board on the car side, and data (internal signals) such as the car's position and running direction are sent and received by serial communication.
  • a portion of the signal line that transmits and receives signals by parallel transmission is branched and connected to a terminal provided on the remote inspection device 100. This makes it possible for a portion of the signals transmitted and received by parallel transmission between the control panel 210 and the elevator equipment group 220 to be input and output on the remote inspection device 100 side.
  • control panel 210 of the elevator system 200 is configured to be connectable to various maintenance devices for the elevator.
  • a connector 261 is provided on a control board provided in the control panel 210.
  • the various types of elevator maintenance devices include, for example, a maintenance computer, a remote monitoring device, a remote inspection device, etc., that are used as dedicated devices for elevator system 200. These maintenance devices are developed and used by the manufacturer of elevator system 200 or a maintenance company affiliated with the manufacturer to correspond to each model of elevator. For this reason, these maintenance devices cannot be connected to elevators made by a different manufacturer.
  • a maintenance company affiliated with a manufacturer is, for example, a subsidiary or associated company of the manufacturer, and will be referred to as a "manufacturer-affiliated maintenance company" below.
  • the remote inspection device 100 of this embodiment is configured to be connectable to elevator system 200 regardless of the manufacturer of elevator system 200.
  • the types of signals suitable for use with the remote inspection device 100 are quite limited (DZ signal, LB signal, GS signal, DS signal, hall call signal, etc., described below).
  • the maintenance device can acquire internal signals held by the elevator management software by establishing communication between the software running on the maintenance device and the elevator management software running on the control panel 210.
  • These internal signals include signals transmitted by parallel transmission (such as switch contact signals) and signals transmitted by serial transmission (such as various commands) input and output between the control panel 210 and the elevator equipment group 220, as well as signals generated from these signals.
  • control panel 210 calculates the car's position, speed, running direction, and state (accelerating running state, constant speed running state, decelerating running state), etc., based on a signal obtained from a rotary encoder that measures the rotational position of the hoist (motor) that drives the elevator. This allows the control panel 210 to hold this information as internal signals in the software.
  • the maintenance device connected to the control panel 210 via serial communication can obtain not only contact signals input and output via parallel transmission, but also internal software signals input and output via serial transmission.
  • the maintenance device can send various commands, such as pausing the elevator or sending a standby command to a specific floor, set various operation options, and change the settings of various parameters.
  • the maintenance computer is a computer (terminal device) that can be used for on-site elevator maintenance and inspection.
  • terminal device By starting up various maintenance software that runs on the maintenance computer, it is possible to check the elevator's various internal signals, give various commands to the elevator, change settings, rewrite software, etc.
  • the remote monitoring device and remote inspection device are used in remote locations via a network.
  • the remote monitoring device is a device that can remotely acquire and display the above internal signals via a network.
  • the remote inspection device is a device that can remotely acquire and display the above internal signals via a network and can issue operation commands to the elevator for remote inspection.
  • FIG. 2 is a diagram showing an example in which a conventional remote inspection system is connected to an elevator system 200, 200a.
  • elevator system 200 is installed in building A, and elevator system 200a is installed in building B.
  • Elevator system 200 is an elevator system manufactured by company X, and the elevator model is model M. Elevators from each company come in multiple models depending on the purpose, era, etc.
  • Elevator system 200a is an elevator system manufactured by company Y, and the elevator model is model N.
  • Only a remote inspection device 500 (conventional type) manufactured by Company X can be connected to the elevator system 200 manufactured by Company X via the connector 261.
  • the remote inspection device 500 can be connected to a management server managed by Company X via a network.
  • Company X is both an elevator manufacturer and an elevator maintenance company (a manufacturer-affiliated maintenance company).
  • Company X's server is installed in Company X's information center.
  • Company X's management server By connecting a terminal to Company X's management server, it becomes possible to remotely inspect the elevator system 200 by operating the terminal.
  • the remote inspection device 500a can be connected to a management server managed by Company Y via a network.
  • Company Y is both the elevator manufacturer and the elevator maintenance company (a manufacturer-affiliated maintenance company).
  • Company Y's server is installed in Company Y's information center.
  • Company Y's management server By connecting a terminal to Company Y's management server, it becomes possible to remotely inspect elevator system 200a by operating the terminal.
  • Company X's remote inspection device 500 can communicate with the control panel 210 to acquire various internal signals generated by the management software of the control panel 210, and can send various commands to the control panel 210 for the elevator. For example, by operating the terminal, it is possible to send a command to make the car travel between two floors, and as a result, it is possible to acquire information such as the travel time and speed between the two floors. The same is true for Company Y's remote inspection device 500a.
  • Such remote inspection devices may be prepared by each elevator manufacturer, but they can usually only be used by the elevator manufacturer or a maintenance company affiliated with that manufacturer. Also, if the model is old, a compatible remote inspection device may not exist.
  • manufacturer-affiliated maintenance company (manufacturer) X can use the remote inspection device 500 manufactured by X, but cannot use the remote inspection device 500a manufactured by Y.
  • manufacturer-affiliated maintenance company (manufacturer) Y can use the remote inspection device 500a manufactured by Y, but cannot use the remote inspection device 500 manufactured by X.
  • independent maintenance companies In addition to elevator maintenance companies affiliated with manufacturers, there are also maintenance companies that are not affiliated with any manufacturer (called “independent maintenance companies”). Independent maintenance companies cannot use the remote inspection device 500 manufactured by Company X or the remote inspection device 500a manufactured by Company Y.
  • the remote inspection device 100 in this embodiment is therefore configured as a remote inspection device that can be used regardless of manufacturer or model. As mentioned above, since communication specifications and signal specifications are not standardized across manufacturers and models, it is difficult to build a remote inspection device 100 that communicates via serial transmission.
  • the remote inspection device 100 connects to the elevator system 200 by parallel transmission (capturing switch contact signals, etc.).
  • signal specifications are not standardized between manufacturers, the types of signals that can be commonly used are limited.
  • some signals are not suitable for use due to hardware constraints (in terms of ease of installation and installation costs). For this reason, in order to realize the remote inspection device 100, it is necessary to thoroughly consider what signals to use and what method to use to determine the inspection items for remote inspection. The signals used in this embodiment and the method of determining the inspection items will be described later using FIG. 7 and subsequent figures.
  • the remote inspection device 100 in this embodiment can be connected to both an elevator system 200 made by company X installed in building A and an elevator system 200a made by company Y installed in building B.
  • the remote inspection device 100 installed in building A and the remote inspection device 100 installed in building B connect to the management server 300 via a network.
  • the terminal 400 it becomes possible to remotely inspect both the elevator system 200 in building A and the elevator system 200a in building B.
  • elevator systems 200 and 200a can be configured to be connected by a single remote inspection device 100.
  • building owners can freely select a maintenance company to conduct remote inspections, regardless of the type of elevator they have installed, whether it is a manufacturer-affiliated or independent maintenance company.
  • the management server 300 is not limited to being configured from one server device, but may be configured from multiple server devices.
  • a server device may be installed for each region to respond to access requests from each region.
  • the server devices in each region may be configured to communicate with each other and share each other's information (customer information, elevator information, etc.).
  • a main server device may be provided that manages the servers in each region, and the main server device may manage the information for each region.
  • regions of one country are not limited to regions of one country, but may include regions of multiple countries.
  • a server device may be placed in Japan and configured to share information with a server device placed outside Japan.
  • a main server device may be placed in one of the countries, and the server devices placed in each country may refer to the information stored in the main server device.
  • Server devices installed in each country may be configured to have a language code for each country or region they manage. For example, a server device that manages buildings in Japan is set to have the language code "Japanese.” A server device that manages buildings in China is set to have the language code "Chinese.” A server device that manages buildings in an English-speaking country is set to have the language code "English.”
  • the server device has language data corresponding to each language code. For example, when accessed from a terminal in Japan, information is displayed on the terminal in Japanese. When accessed from a terminal in China, information is displayed on the terminal in Chinese. Information may also be managed by language.
  • the management server 300 may be composed of a group of servers such as a communication server (Web server), a data server, and an application server that are connected to the remote inspection device 100 and the terminal 400.
  • the remote inspection system 1 can be used in countries around the world.
  • elevator system 200 control panel 210 and elevator equipment group 220
  • remote inspection device 100 are installed in building A in a first country (e.g., the United States)
  • elevator system 200a control panel 210a and elevator equipment group 220a
  • remote inspection device 100 are installed in building B in a second country (e.g., Japan) different from the first country.
  • the management server 300 is installed in an information center in the second country.
  • the management server 300 installed in the second country can be connected via a network to the remote inspection device 100 installed in the first country and the remote inspection device 100 installed in the second country.
  • the management server 300 can send a command to execute a remote inspection to the remote inspection device 100 installed in the first country or the second country, and can receive the judgment results of each inspection item of the remote inspection from the remote inspection device 100 that has received the command to execute the remote inspection.
  • the terminal 400 may be installed in the first country or in the second country.
  • the management server 300 installed in the second country may be accessed from the terminal 400 installed in the second country, and remote inspection may be performed by the remote inspection device 100 installed in the first country or the second country.
  • the management server 300 installed in the second country may be accessed from the terminal 400 installed in the first country, and remote inspection may be performed by the remote inspection device 100 installed in the first country or the second country.
  • the remote inspection device 100 installed in the first country establishes a network connection using the communication line network of the first country (such as an LTE line network).
  • the remote inspection device 100 installed in the second country establishes a network connection using the communication line network of the second country.
  • the management server 300 installed in the second country connects to the remote inspection device 100 installed in the first country or the second country via the communication line of the second country.
  • the management server 300 in the second country can manage the remote inspection device 100 that performs remote inspection of the elevator system 200 operating in the first country. This allows the management server 300 to manage the remote inspection device 100 across countries, regardless of in which country the elevator system 200 and remote inspection device 100 are installed.
  • the remote inspection device 100 is not limited to determining each inspection item of the remote inspection, and the management server 300 may determine each inspection item of the remote inspection.
  • the remote inspection device 100 transmits signal data for determination acquired from the elevator system 200 to the management server 300.
  • the management server 300 may determine each inspection item based on the signal data.
  • the management server 300 may be installed in each country, and configured to manage the remote inspection device 100 for each country.
  • Elevator System 200 3 is a diagram showing an example of a hardware configuration of elevator system 200. In this embodiment, it is assumed that building 2 in which elevator system 200 is installed has five floors. It is also assumed that one elevator (this elevator will be referred to as "No. 1 elevator") is installed in building 2.
  • the control panel 210 includes a car control unit 212.
  • the car control unit 212 is a control board that controls the elevator equipment group 220.
  • the elevator equipment group 220 includes hall devices 230 installed at the halls of each floor from the first floor (1F) to the fifth floor (5F), various sensors and various switches (such as a slow-up switch and a slow-down switch, which will be described later) used in the elevator system 200, and the first car hoist 250 and car device 240.
  • the hoist 250 is a motor that drives the elevator car to raise and lower it.
  • the car device 240 is various devices installed in the car, including a destination floor button for registering destination floors.
  • the hall device 230 is various devices installed at the halls of each floor, including a hall button for registering hall calls. Details of these will be explained using Figure 4 and subsequent figures.
  • the individual car control units 212 are connected to the landing devices 230 on each floor, various sensors, various switches, etc., via a control cable 21 bundling multiple signal lines.
  • the individual car control units 212 are connected to the No. 1 hoisting machine 250 and car device 240, etc., via a control cable 22 bundling multiple signal lines.
  • Each machine control unit 212 is equipped with a processor, memory, and a communication interface.
  • the processor is a CPU (Central Processing Unit).
  • the memory is, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory). These are connected to each other via a bus so that they can communicate with each other.
  • the ROM stores the management software program for controlling the elevator equipment group 220.
  • the CPU loads the program stored in the ROM into the RAM and executes it to control the elevator equipment group 220.
  • the RAM serves as a working area when the CPU executes the program, and temporarily stores the program and data used when executing the program.
  • the individual car control units 212 are configured to be able to communicate with the elevator equipment group 220, such as the hall device 230, the hoist 250, and the car device 240, or with the various maintenance devices shown in Figures 1 and 2, by serial or parallel communication via the communication interface.
  • the elevator equipment group 220 such as the hall device 230, the hoist 250, and the car device 240, or with the various maintenance devices shown in Figures 1 and 2, by serial or parallel communication via the communication interface.
  • FIG. 4 is a diagram showing a schematic diagram of an elevator structure.
  • the elevator car 10 is installed in a hoistway 8 provided in a building 2.
  • the car 10 moves up and down in the hoistway 8 to move between multiple floors.
  • the car 10 can stop at each floor from the first floor (1F) to the fifth floor (5F).
  • the machine room 5 is provided directly above the elevator shaft 8.
  • the machine room 5 contains a hoist 250, a control panel 210, and a remote inspection device 100.
  • the car device 240 is provided in the car 10.
  • the elevator is a traction type elevator.
  • a traction type elevator is one type of rope type elevator. This elevator is equipped with a car 10, a counterweight (balancing weight) 12, a rope 11, a hoist 250, and a deflector pulley 13. A rope (main rope) 11 is hung between the hoist 250 and the deflector pulley 13. The car 10 and counterweight 12 are suspended from both ends of the rope 11.
  • the elevator can run the car 10 installed in the hoistway 8 in an upward direction (also called the "UP direction”) or a downward direction (also called the "DN direction").
  • UP direction also called the "UP direction”
  • DN direction a downward direction
  • the car 10 has a running direction that is either the UP direction, the DN direction, or no direction.
  • the running direction of the car 10 is the UP direction.
  • the car 10 runs in the DN direction or stops (stopped in a state where it is scheduled to run in the DN direction) to respond to a running command to a floor below the car 10
  • the running direction of the car 10 is the DN direction.
  • the car direction of the car 10 is defined as "no direction”. Note that when the car 10 is stopped at the lowest floor, the car direction is the UP direction, and when the car 10 is stopped at the top floor, the car direction may be the DN direction.
  • the car 10 becomes able to run when the electromagnetic brake (not shown, also simply referred to as the "brake") of the hoist 250 is released.
  • the car 10 enters a braking state (stationary state) when the brake of the hoist 250 is activated.
  • the brake of the hoist 250 is configured to be able to brake by pressing the brake shoe against the brake drum with the force of a spring. Supplying power to the brake coil causes the brake shoe to move away from the brake drum, thereby releasing the brake. If the supply of power to the brake coil is cut off, the electromagnetic brake enters a braking state and the car 10 cannot run.
  • Elevators are designed so that the weight of the counterweight 12 balances with the weight of the car 10, including passengers, when the car 10 is loaded with 50% of its maximum load capacity. For example, when there are no passengers, the counterweight 12 is heavier than the car 10. For this reason, if the brake is simply released, the car 10 will travel in the UP direction. On the other hand, when the car 10 is full, the car 10 will be heavier than the counterweight 12. For this reason, if the brake is simply released, the car 10 will travel in the DN direction.
  • a shock absorber (buffer) 14 is installed in the pit 6, which is the bottom of the elevator shaft 8.
  • the shock absorber 14 is a device that absorbs the shock of the car 10 falling if an abnormality occurs.
  • the individual car control units 212 are connected to the car device 240 via a control cable 22 ( Figure 3). Multiple signal lines are bundled within the control cable 22 for communication between the individual car control units 212 and the car device 240.
  • the platform control unit 212 is connected to the landing device 230, various sensors, and various switches installed on each floor via a control cable 21 ( Figure 3) that runs along the wall of the elevator shaft 8.
  • the control cable 21 is composed of multiple signal lines for communication between the platform control unit 212 and the landing device 230 or various switches, etc. If there is no machine room 5, the hoist 250 and control panel 210, etc. are installed inside the elevator shaft 8 (on the wall or in the pit 6, etc.).
  • the elevator is not limited to a traction type elevator in which the car 10 and counterweight 12 are balanced as described above.
  • it may be a drum type elevator in which the car 10 is raised and lowered by winding the rope 11 around a drum without using a counterweight 12.
  • a drum type elevator is one form of a rope type elevator. It may also be a hydraulic elevator in which oil is sent to a hydraulic jack by an electric pump, and the car 10 is raised and lowered by the operation of the hydraulic jack.
  • the position of the car 10 is controlled by controlling the amount of oil sent to the hydraulic jack.
  • the properties of the oil change depending on the season or temperature, which can easily lead to differences in the running characteristics of the car 10. For example, compared to the high temperatures of summer, the oil thickens in winter, so it takes longer to start up.
  • hydraulic elevators which control the amount of oil (hydraulic pressure)
  • the car 10 is stopped on a certain floor, the car sinks little by little over time, and the floor surface of the car 10 may gradually drop relative to the floor surface of the landing (leaving the door zone while stopped).
  • FIG. 5A is a diagram showing an example of an elevator landing.
  • FIG. 5A shows a view of the elevator landing from the front.
  • a platform call in the UP direction is also called an “UP call” or “UP platform call”
  • a platform call in the DN direction is also called a “DN call” or “DN platform call”
  • a destination floor call in car 10 is also called a “car call.”
  • the buttons for registering each of these calls are called “call buttons.”
  • the call buttons include car call buttons (also called “destination floor buttons”) provided inside the car 10, and platform call buttons (also called “platform buttons”) provided at the platforms.
  • Platform call buttons include upward platform call buttons (also called “UP call buttons” or “UP platform call buttons”) provided at the platforms, and downward platform call buttons (also called “DN call buttons” or “DN platform call buttons”) provided at the platforms.
  • each floor is equipped with a landing device 230.
  • the landing device 230 includes a landing operating panel 70.
  • the first floor landing will be used as an example for explanation.
  • the first floor landing is equipped with a door 61 and a landing operating panel 70.
  • the hall operating panel 70 is equipped with an UP hall call button 81 and a DN hall call button 82.
  • an UP hall call button 81 is pressed, an UP hall call on the first floor is registered.
  • the hall operating panel 70 is equipped with an indicator 71.
  • the indicator 71 displays the direction in which the car 10 is traveling and the floor on which the car 10 is located (car position). In the example shown in the figure, it shows that the car 10 is traveling or stopped in the UP direction on the second floor.
  • Figure 5B is a diagram showing an example of the inside of an elevator car.
  • Figure 5B shows a view of the inside of the car 10 looking toward the exit.
  • the car device 240 includes a car operation panel 50.
  • the car 10 is provided with a door 60 and the car operation panel 50.
  • the car operation panel 50 is provided with a door open button 52 for opening the door, a door close button 53 for closing the door, and a car call button for registering destination floors (car calls) from the 1st to 5th floors.
  • the car call buttons include a 1st floor car call button 31 for registering a car call to the 1st floor, a 2nd floor car call button 32 for registering a car call to the 2nd floor, a 3rd floor car call button 33 for registering a car call to the 3rd floor, a 4th floor car call button 34 for registering a car call to the 4th floor, and a 5th floor car call button 35 for registering a car call to the 5th floor.
  • the car operation panel 50 is also provided with an indicator 51 that displays the running direction and car position of the car 10.
  • a call signal corresponding to the pressed hall call is sent to the control panel 210 (each car control unit 212).
  • the control panel 210 registers the hall call.
  • the control panel 210 then assigns a car 10 to the registered hall call, and causes the car 10 to respond to the registered hall call.
  • the control panel 210 registers the UP platform call on the first floor.
  • the control panel 210 determines the allocation of the car 10 to the UP platform call on the first floor.
  • the car 10 responds to the UP platform call on the first floor, travels to the first floor, then stops and opens the door.
  • a call signal corresponding to the pressed car call is sent to the control panel 210.
  • the control panel 210 registers the car call.
  • the control panel 210 causes the car 10 to respond to the registered car call.
  • a call signal corresponding to a car call to the second floor is sent to the control panel 210.
  • the control panel 210 registers the car call to the second floor.
  • the car 10 responds to the car call to the second floor, travels to the second floor, then stops and opens the door.
  • the doors open means that both the car 10 side door 60 and the hall side door 61 open in unison, and hereafter this will also be expressed as “the doors open.”
  • the doors close means that both the car 10 side door 60 and the hall side door 61 close in unison, and hereafter this will also be expressed as “the doors close.”
  • the remote inspection device 100 uses the determination signals to determine each item of the remote inspection.
  • the determination signals include a first signal to a fourth signal.
  • Each determination signal has either an ON state or an OFF state.
  • a DZ signal as one aspect of the first signal an LB signal as one aspect of the second signal, a GS signal as one aspect of the third signal, and a DS signal as one aspect of the fourth signal are exemplified.
  • the landing device 230 provided on each floor includes a landing door switch (also called an "interlock switch") not shown.
  • the landing door switch is ON when the landing side door 61 is closed, and is OFF when the landing side door 61 is open.
  • the landing door switch is OFF (door not closed), for safety reasons, it is controlled by the control panel 210 to prevent the car 10 from traveling.
  • the DS signal when the landing door 61 is closed and the landing door switch is in the ON state (the landing door switch is pressed and the contact is in the ON state), the DS signal is in the ON state, and when the landing door 61 is not closed and the landing door switch is in the OFF state, the DS signal is in the OFF state and is sent to the control panel 210.
  • the car device 240 also includes a car door switch (also called a "gate switch”), not shown.
  • the car door switch is ON when the door 60 on the car 10 side is closed, and is OFF when the door 60 on the car 10 side is open.
  • the car door switch is OFF (door not closed), for safety reasons, it is controlled by the control panel 210 so that the car 10 cannot run.
  • the GS signal when the car 10 door 60 is closed and the car door switch is ON (the car door switch is pressed and the contact is ON), the GS signal is ON, and when the car 10 door 60 is not closed and the car door switch is OFF, the GS signal is OFF and is sent to the control panel 210.
  • the car 10 door 60 opens and closes in conjunction with the hall door 61.
  • the car device 240 also includes a door zone detection device (also called a "floor landing device"), not shown.
  • the door zone refers to the position range of the car 10 where the door 60 of the elevator car 10 can be opened and closed.
  • the door zone detection device is installed in the car 10, and when the car 10 is located within the position range where the door can be opened (within the door zone) on each floor, the door zone detection device detects the DZ signal as being in the ON state, and when the car 10 is not located within the door zone, the door zone detection device detects the DZ signal as being in the OFF state and sends it to the control panel 210.
  • the door zone detection device installed in the car 10 includes a magnetic proximity sensor.
  • a door zone detection plate is installed at the landing position of each floor in the elevator shaft 8.
  • the DZ signal is configured to be ON when the magnetic proximity sensor of the door zone detection device detects the door zone detection plate.
  • the DZ signal is configured to be ON when the floor position of the car 10 is within 150 mm above or below the floor position of each floor landing.
  • the control panel 210 controls the car so that the door cannot be opened.
  • the door zone detection device may be installed on the elevator shaft 8 side, and the door zone detection plate may be installed on the car 10 side.
  • the LB signal becomes ON.
  • the elevator brake is activated (the brake is not released) by stopping the supply of power to the brake coil of the hoisting machine 250, the LB signal becomes OFF.
  • a slow-up switch (not shown) and a slow-down switch (not shown) are installed on the wall of the elevator shaft 8.
  • the slow-up switch is provided to prevent the car 10 from colliding with the top of the elevator shaft 8.
  • the slow-up switch is configured to turn ON by contacting a specified member attached to the car 10 when the car 10 traveling UP reaches a specified position between the 5th floor (the top floor) and the 4th floor.
  • the SUL signal When the slow-up switch is ON, the SUL signal is ON, and when the slow-up switch is OFF, the SUL signal is OFF.
  • the control panel 210 controls the car 10 to decelerate for safety reasons.
  • the slow-down switch is a switch that is installed to prevent the car 10 from colliding with the bottom of the elevator shaft 8 (or entering the pit 6).
  • the slow-up switch is configured to be turned ON by contacting a specified member attached to the car 10 when the car 10 traveling in DN reaches a specified position between the first floor (the lowest floor) and the second floor.
  • the SDL signal When the slowdown switch is ON, the SDL signal is ON, and when the slowdown switch is OFF, the SDL signal is OFF.
  • the control panel 210 controls the car 10 to slow down for safety reasons.
  • slow-up switch and slow-down switch may be installed on the car 10 side, and these switches may be configured to be turned on by contact with a specified member installed on the elevator shaft 8 side.
  • elevator No. 1 is always assigned and responds to the hall call.
  • Locomotive No. 1 For example, if a DN call is registered at a platform on the second floor, Locomotive No. 1 will be assigned to this DN call on the second floor. Locomotive No. 1, traveling in the DN direction, will respond to this DN call on the second floor, stop at the second floor, and then open its doors.
  • FIG. 6 is a diagram showing an example of the hardware configuration of elevator system 200b relating to a modified example.
  • elevator system 200b includes two elevators, "Unit 1" and "Unit 2."
  • Elevator equipment group 220b includes hall devices 230 installed at the halls of each floor from the first to the fifth floors, a hoist 250 and a car device 240 included in Unit 1, various sensors and switches, etc., of Unit 1, a hoist 250 and a car device 240 included in Unit 2, and various sensors and switches, etc., of Unit 2.
  • the control panel 210b comprises a group control unit 211 and two car control units 212.
  • the group control unit 211 is a control board that manages multiple elevators.
  • the car control unit 212 is a control board that controls the operation of the corresponding elevator.
  • the group control unit 211 and the two car control units 212 communicate with each other and exchange various data related to the elevators.
  • the group management control unit 211 collectively controls the hall devices 230 on each floor.
  • the group management control unit 211 is connected to the hall devices 230 installed at the halls on each floor from the 1st to the 5th floors via a control cable 21.
  • the individual car control unit 212 is connected to the hoisting machine 250, the car device 240, and various sensors and switches of each car via control cables 22 and 23.
  • the hall device 230 on each floor includes a hall operating panel 70 equipped with a hall call button.
  • the hall operating panel 70 does not include an indicator 71.
  • one hall operating panel 70 is installed on each floor, and indicators 71 are installed for each elevator (two indicators).
  • the group management control unit 211 is connected to the hall devices 230 (hall call buttons) installed on each floor via a control cable 21 that runs along the wall of the elevator 8.
  • Each car control unit 212 is connected to the hoist 250 and car device 240 of the car corresponding to each car control unit 212 via a control cable 22.
  • the car device 240 includes a car operation panel 50 equipped with a destination floor button, a car door switch, and a door zone detection device.
  • the individual platform control units 212 are connected to the various sensors and switches of the vehicle corresponding to each platform control unit 212 via control cables 23 that run along the walls of the elevator shaft 8.
  • the various sensors and switches include a slow-up switch, a slow-down switch, a landing door switch for each floor, and an indicator 71 for each floor, which are installed for each platform.
  • the group management control unit 211 registers a hall call corresponding to the hall call button.
  • the group management control unit 211 assigns one of the multiple cars 10 (car No. 1, car No. 2) to the registered hall call.
  • the individual car control unit 212 corresponding to the assigned car 10 causes the assigned car to respond to the registered hall call.
  • the 1st floor UP platform call signal turns ON.
  • the group management control unit 211 receives the 1st floor UP platform call signal that is ON, and registers a 1st floor UP platform call.
  • the group management control unit 211 assigns either car 10 No. 1 or No. 2 to the 1st floor UP platform call.
  • the group management control unit 211 assigns car 10 of car No. 1.
  • the group management control unit 211 sends a command to the individual car control unit 212 of car No. 1 to respond to the 1st floor UP hall call.
  • the individual car control unit 212 of car No. 1 causes car 10 of car No. 1 to run and respond to the 1st floor UP hall call. After running to the 1st floor, car 10 stops at the 1st floor and opens the door.
  • the control panel 210b may not include the group management control unit 211, but may include only two individual car control units 212. In this case, the functions of the group management control unit 211 may be provided in the individual car control unit 212 of the first unit.
  • the individual car control unit 212 of the first unit controls the hall device 230 via the control cable 21, and is directly connected to and communicates with the individual car control unit 212 of the second unit.
  • the elevator system 200 (200a, 200b) can set forced stop floors and waiting floors.
  • a forced stop floor if the car 10 passes a forced stop floor, the car 10 always stops at the forced stop floor and opens the doors.
  • the hotel lobby is on the second floor, and the second floor is set as a forced stop floor.
  • the car 10 travels from the first floor to the fifth floor, the car 10 always stops at the second floor along the way and opens the doors.
  • a waiting floor it is also possible to set whether or not to wait with the doors open and the number of waiting cars.
  • one or two cars 10 can be made to wait at a waiting floor. In this case, they can be made to wait at the waiting floor with the doors open or closed.
  • the car 10 closes the doors a predetermined time (for example, one minute or three minutes) after arriving at the waiting floor and opening the doors.
  • a waiting floor for which the door-open waiting setting has been set is also referred to as a "door-open waiting floor.”
  • the elevator system 200b may also perform a distributed standby operation. For example, if there are two elevators managed by the control panel 210b, the two cars 10 that have become available are placed on standby in a distributed manner so that they do not stop on the same floor or on a nearby floor. For example, if two cars 10 that have become available are both stopped on the first floor (main floor), one car is made to run to a higher floor (e.g., the third floor) and then placed on standby with its doors closed.
  • a higher floor e.g., the third floor
  • Fig. 7 is a diagram for explaining the hardware configuration of the remote inspection system 1 and signals used in the remote inspection system 1.
  • elevator system 200 includes control panel 210 and elevator equipment group 220.
  • Elevator equipment group 220 includes hall devices 230 on the first to fifth floors.
  • Control panel 210 and elevator equipment group 220 are connected by multiple signal lines, allowing multiple signals to be transmitted and received.
  • These multiple signals include the above-mentioned DZ signal, LB signal, GS signal, DS signal, SUL signal, SDL signal, UP signal, DN signal, UP platform call signal on the 1st floor, and DN platform call signal on the 5th floor. All of the signals exemplified here are transmitted and received by parallel transmission.
  • the DZ signal is a signal that is detected by the door zone detection device.
  • the DZ signal is ON, and when it is outside the door zone, the DZ signal is OFF.
  • the LB signal is a signal that goes ON when the brake is released by supplying power to the brake coil of the hoist 250.
  • the LB signal goes OFF.
  • the GS signal is a signal that is detected by the car door switch.
  • the GS signal is ON, and when the car door 60 is open, the GS signal is OFF.
  • the DS signal is a signal that is detected by the landing door switch.
  • the DS signal is ON, and when the landing door 61 is open, the DS signal is OFF.
  • the SUL signal is a signal that is detected by the slow-up switch.
  • the SUL signal is in the ON state, and when the slow-up switch is in the OFF state, the SUL signal is in the OFF state.
  • the SDL signal is a signal that is detected by the slow-down switch.
  • the SDL signal is in the ON state, and when the slow-down switch is in the OFF state, the SDL signal is in the OFF state.
  • the UP signal When the running direction of the car 10 is the UP direction, the UP signal is ON, and when the running direction of the car 10 is other than the UP direction, the UP signal is OFF.
  • the running direction of the car 10 is the DN direction
  • the DN signal is ON, and when the running direction of the car 10 is other than the DN direction, the DN signal is OFF.
  • the UP platform call signal on the first floor is a signal that is turned ON when the UP platform call button 81 on the platform device 230 on the first floor is pressed.
  • the contact is turned ON, and when the UP platform call button 81 is released from the pressed state, the contact is turned OFF.
  • the DN hall call signal for the fifth floor is a signal that is turned ON when the DN hall call button 82 of the hall device 230 for the fifth floor is pressed.
  • the contact is turned ON, and when the pressed state of the DN hall call button 82 is released, the contact is turned OFF.
  • hall call signals output from hall call buttons and car call signals output from car call buttons are also input to the control panel 210.
  • the remote inspection device 100 includes a control device 110, an input IF (interface) 130, an output IF (interface) 140, and a communication IF (interface) 120.
  • the output IF 140 is a board for outputting signals to the elevator equipment group 220.
  • the control device 110 can output a 1st floor UP hall call signal and a 5th floor DN hall call signal to the output IF 140.
  • the output IF 140 receives a 1st floor UP hall call signal from the control device 110, it outputs the received 1st floor UP hall call signal to the elevator equipment group 220, and when the output IF 140 receives a 5th floor DN hall call signal from the control device 110, it outputs the received 5th floor DN hall call signal to the elevator equipment group 220.
  • the first floor hall device 230 is equipped with a first floor UP hall call button 81.
  • a signal line is provided between the first floor hall device 230 and the control panel 210 for transmitting a first floor UP hall call signal.
  • the fifth floor hall device 230 is equipped with a fifth floor DN hall call button 82.
  • a signal line is provided between the fifth floor hall device 230 and the control panel 210 for transmitting a fifth floor DN hall call signal.
  • the hall call signal is transmitted from the hall device 230 to the control panel 210 by serial transmission, so it is not possible to branch off a parallel transmission line from the control panel 210 side to input and output the hall call signal to the remote inspection device 100.
  • the 1st floor UP platform call button 81 When the 1st floor UP platform call button 81 is pressed, the contacts are shorted and a signal that is in the ON state is input to the 1st floor platform device 230. As a result, the 1st floor platform device 230 transmits a 1st floor UP platform call signal in the ON state to the control panel 210 (serial transmission). A signal line that transmits the 1st floor UP platform call signal is connected to a terminal of the output IF 140, and this signal line is connected to the platform device 230.
  • the 1st floor UP platform call button 81 is modified so that the contacts are shorted when the 1st floor UP platform call signal in the ON state is output from the output IF 140.
  • the 1st floor UP platform call signal in the ON state is transmitted from the 1st floor platform device 230 to the control panel 210.
  • the 1st floor UP platform call signal in the ON state is transmitted from the 1st floor platform device 230 to the control panel 210.
  • the 5th floor DN hall call button 82 When the 5th floor DN hall call button 82 is pressed, the contacts are shorted and a signal that is in the ON state is input to the 5th floor hall device 230. As a result, the 5th floor hall device 230 transmits a 5th floor DN hall call signal in the ON state to the control panel 210 (serial transmission). A signal line that transmits the 5th floor DN hall call signal is connected to a terminal of the output IF 140, and this signal line is connected to the hall device 230.
  • the contacts of the 5th floor DN hall call button 82 are modified so that when the 5th floor DN hall call signal in the ON state is output from the output IF 140, the 5th floor hall call button 82 is shorted.
  • the 5th floor hall device 230 transmits a 5th floor DN hall call signal in the ON state to the control panel 210.
  • a 5th floor DN hall call signal in the ON state from the output IF 140, it is possible to create a pseudo state in which the 5th floor DN hall call button 82 is pressed.
  • Signals are sent and received between the elevator equipment group 220 and the input IF 130 and output IF 140 via parallel transmission. Signals are also sent and received between the input IF 130, output IF 140, and the control device 110 via parallel transmission.
  • the signals input from each signal line connecting the elevator equipment group 220 and the input IF 130 vary in voltage, etc. depending on the manufacturer (for example, 24V, 48V, 100V), so the signals are standardized at the input IF 130 and input to the control device 110.
  • the control device 110 generates a pseudo 1st floor UP hall call by sending a 1st floor UP hall call signal to the hall device 230 on the 1st floor via the output IF 140.
  • the control device 110 generates a pseudo 5th floor DN hall call by sending a 5th floor DN hall call signal to the hall device 230 on the 5th floor via the output IF 140. This allows the car 10 to run between the 1st and 5th floors and perform the above-mentioned diagnostic operation.
  • the control device 110 acquires the DZ signal, LB signal, GS signal, DS signal, SUL signal, SDL signal, UP signal, and DN signal input/output to/from the control panel 210 via the input IF 130.
  • the control device 110 also acquires the detection result of the temperature sensor 15 and the voltage of the intercom 16 as signals.
  • the control device 110 judges each item of the remote inspection based on these signals, and transmits the judgment results to the management server 300 via the communication IF 120. The judgment results can be confirmed on the terminal 400.
  • control panel 210 and the maintenance device manufactured by Company X are configured to be connected by serial communication via the connector 261 provided on the control panel 210.
  • (Diagnostic operation) 8 is a diagram for explaining the relationship between the running of the car 10 and signals during diagnostic operation.
  • a pseudo 1st floor UP hall call and a 5th floor DN hall call are generated, and diagnostic operation can be performed in which the car 10 runs between the lowest floor (1st floor) and the top floor (5th floor). This makes it possible to measure, for example, the running time from the 1st floor to the 5th floor.
  • Diagnostic operation is performed when car 10 is not excluded from the cars to be assigned, that is, when car 10 is able to respond to hall calls from elevator passengers. For this reason, even if car 10 is called to the first floor by diagnostic operation and then tried to run to the fifth floor, there is a possibility that it will run to a floor other than the first floor due to a hall call from a passenger, and during diagnostic operation, it may stop at a floor between the first and fifth floors due to a car call from a passenger. For this reason, diagnostic operation is performed, for example, once a month, late at night when there are no elevator passengers.
  • continuous diagnosis a judgment is made using the acquired judgment signal regardless of whether or not a hall call signal has been sent by the instruction unit 155 of the remote inspection device 100.
  • the remote inspection device 100 outputs the DN hall call signal for the 5th floor to the hall device 230 on the 5th floor in the ON state in order to perform diagnostic operation. This simulates the pressed state of the DN hall call button 82 on the hall device 230 on the 5th floor.
  • a DN hall call for the fifth floor is registered, and at time t1, car 10 starts traveling toward the fifth floor.
  • the brake of the hoist 250 is released, and the LB signal changes from OFF to ON.
  • the DZ signal changes from ON to OFF.
  • the SDL signal changes from ON to OFF.
  • the car 10 is now in an accelerating traveling state and is traveling in the UP direction.
  • car 10 At time t3, car 10 is on the fourth floor, enters the door zone of the fourth floor, and the DZ signal changes from OFF to ON. When car 10 leaves the door zone of the fourth floor, the DZ signal changes from ON to OFF. After that, at time t4, car 10 changes to a decelerating running state in order to stop on the fifth floor.
  • car 10 stops on the fifth floor (the top floor).
  • the slow-up switch changes from OFF to ON, causing the SUL signal to change from OFF to ON.
  • the DZ signal changes from OFF to ON.
  • the brake of hoisting machine 250 operates (the release state is released), and the LB signal changes from ON to OFF.
  • the GS signal and the DS signal change from the ON state to the OFF state.
  • the car 10 enters a closed door state.
  • the GS signal and the DS signal change from the OFF state to the ON state.
  • the remote inspection device 100 when the car 10 is stopped on the first floor and the remote inspection device 100 outputs the DN hall call signal for the fifth floor to the elevator system 200 in the ON state, the car 10 can be made to run from the first floor to the fifth floor. At that time, the remote inspection device 100 can acquire various changing elevator signals and perform remote inspection based on these signals.
  • the remote inspection device 100 To stop the car 10 at the first floor, the remote inspection device 100 simply outputs the first floor UP hall call signal to the elevator system 200 in the ON state. This causes the car 10 to travel toward the first floor.
  • the remote inspection device 100 when the car 10 is stopped on the fifth floor, if the remote inspection device 100 outputs an ON state to the elevator system 200 an UP hall call signal for the first floor, the car 10 can be made to run from the fifth floor to the first floor. At that time, the remote inspection device 100 can acquire various changing elevator signals and perform remote inspection based on these signals.
  • the diagnostic operation is not limited to being performed by generating a UP hall call for the lowest floor and a DN hall call for the top floor, but may be performed by a hall call for any two floors.
  • the service isolation setting is configured so that the elevator does not provide service to the top floor (fifth floor) (it cannot stop at the top floor).
  • a UP hall call for the first floor and a DN hall call for the fourth floor may be generated to perform the diagnostic operation.
  • the signals (DZ signal, LB signal, DS signal, GS signal) used to judge the conditions for operating the elevator safety circuit are used as the judgment signals for remote inspection. Also, from the viewpoint of ease of installation (construction), hall calls, rather than car calls, are used as output signals for operation diagnosis (diagnostic operation) for remote inspection. The reason for this is explained below.
  • the elevator is equipped with a safety circuit that stops the operation of the elevator when the hardware or software detects a specified abnormality.
  • the safety circuit is configured to cut off the supply of power to the hoist 250 and the brake coil of the electromagnetic brake of the hoist 250 when any one of multiple contacts in the safety circuit is opened. This causes the driving force of the hoist 250 to be lost, and the electromagnetic brake to enter a braking state, stopping the car 10.
  • the elevator system 200 is equipped with a speed governor (not shown), an emergency stop device (not shown), a shock absorber 14, etc. as safety devices.
  • the speed governor is a device installed on the car 10 and physically detects the speed of the car 10.
  • the emergency stop device is a device installed on the car 10 and physically brakes the car 10 when the speed governor detects an abnormal speed.
  • the shock absorber 14 is installed in the pit 6 and is a device that absorbs the impact when the car 10 falls.
  • the hardware detects that the car 10 is traveling at an abnormal speed
  • the software issues a command to stop the car 10
  • the hardware or software activates a safety circuit.
  • the safety circuit is activated, the power supplied to the elevator is cut off, and the operation of the car 10 is halted.
  • the car 10 can be physically stopped by an emergency stop device or buffer 14.
  • the safety circuit When the safety circuit is activated, the power supply to the brake coil of the electromagnetic brake of the hoisting machine 250 is cut off (LB signal is OFF), which causes the electromagnetic brake to enter a braking state and stops the car 10.
  • the elevator is controlled so that the car 10 will not move when the hall door 61 is open (the hall door switch (DS signal) is OFF) or the car door 60 is open (the car door switch (GS signal) is OFF).
  • the elevator is controlled so that the door does not open. For example, if the car 10 is outside the door zone (the DZ signal is OFF) and the door is open (the DS signal or the GS signal is OFF), the safety circuit is activated and the car 10 stops.
  • elevators from each manufacturer typically output a DS signal (landing door switch ON/OFF), a GS signal (car door switch ON/OFF), a LB signal (electromagnetic brake release/braking), a DZ signal (door zone detection/non-detection), or a similar signal as a contact signal. These signals are used to determine the conditions for activating the elevator safety circuit.
  • the DS signal, GS signal, LB signal, DZ signal, or similar signals commonly used by all elevator companies are used to determine the inspection items for remote inspection.
  • Other signals may or may not be acquired as parallel transmission signals, depending on the manufacturer or elevator model. When such signals are used, remote inspection items may or may not be determined depending on the elevator.
  • the DZ signal can be used to calculate the travel time between floors or the car position. For example, assume that car 10 is currently stopped at the lowest floor (first floor). When car 10 starts moving, the DZ signal changes from ON to OFF, and when the car position reaches the second floor, the DZ signal changes from OFF to ON.
  • the time from when the DZ signal changes from ON to OFF to when it changes from OFF to ON can be calculated as the travel time of the car 10 from the first floor to the second floor.
  • the car position can be changed from the first floor to the second floor at the timing when the DZ signal changes from OFF to ON. In this way, it is possible to calculate the travel time between floors and the floor position at the timing when the DZ signal changes.
  • the cage position is set to the first floor (lowest floor), and if the SUL signal is ON, the cage position is set to the fifth floor (top floor). Also, if the DZ signal changes from OFF to ON, the cage position is increased by one floor if the UP signal is ON, and decreased by one floor if the DN signal is ON.
  • the SDL signal, SUL signal, UP signal, and DN signal are not necessarily required signals.
  • a 1st floor UP call is generated by diagnostic operation late at night when there are no elevator passengers.
  • the car 10 can respond to the 1st floor UP call and set the floor where it has stopped to "1st floor.”
  • a 5th floor DN call is generated.
  • the car 10 can respond to the 5th floor DN call and set the floor where it has stopped to "5th floor.”
  • the car position is set to 1st floor and the car direction is set to UP.
  • the car position is set to 1st floor and the car direction is set to UP.
  • the door zone detection device is equipped with multiple sensors, and multiple door zone detection plates are installed corresponding to each of the multiple sensors.
  • the detection timing of the multiple sensors differs depending on the position of the car 10. If the timing at which each sensor changes to the ON state (or the OFF state) differs when the car direction is the UP direction and when it is the DN direction, the car direction can be identified by using the timing at which each sensor changes state.
  • the signal line output from the rotary encoder to the control panel 210 is branched and configured to be able to input a signal to the remote inspection device 100.
  • the car direction can be determined based on whether the A-phase or B-phase pulse is output first. For example, the car direction can be set to the UP direction when the B-phase pulse is output 1/4 of a cycle behind the A-phase pulse, and the car direction can be set to the DN direction when the A-phase pulse is output 1/4 of a cycle behind the B-phase pulse.
  • the cage position and cage speed of the cage 10 It is possible to calculate the distance traveled by the cage 10 (cage position) from the number of pulses detected from the rotary encoder. It is also possible to calculate the cage speed from the number of pulses detected per unit time. In this way, it is possible to know whether the cage 10 is in a stopped state, an accelerating state, a constant speed state, or a decelerating state, and it is also easy to determine whether the cage position and cage speed are appropriate.
  • the remote inspection device 100 when performing diagnostic operation in which the car 10 is running, is configured to output a pseudo-top floor DN hall call and a bottom floor UP hall call. This makes it possible to run the car 10 between the bottom floor and the top floor.
  • the remote inspection device 100 may be configured to output pseudo car calls to the top floor and car calls to the bottom floor, rather than hall calls.
  • the remote inspection device 100 is configured to output hall calls, rather than car calls.
  • the contacts of the hall call button of the hall device 230 installed at the hall are modified so that a signal input shorts out the contacts.
  • the signal line (signal cable) for transmitting the hall call signal can be run from the remote inspection device 100 installed in the machine room 5 along the wall of the hoistway 8 and connected to the hall call buttons of the hall devices 230 on the top and bottom floors embedded in the wall of the hoistway 8.
  • the system is modified so that the contacts of the car call button of the car device 240 installed in the car 10 are shorted by signal input.
  • the signal line for transmitting the car call signal must be connected from the remote inspection device 100 installed in the machine room 5 to the car call button of the car device 240 installed inside the car 10.
  • signals transmitted by parallel transmission are used to determine the inspection items for remote inspection, rather than signals transmitted by serial transmission, the communication specifications of which vary depending on the manufacturer and model.
  • signals that are commonly used regardless of manufacturer and model, and that are suitable for use from the standpoint of ease of installation (construction) and installation costs are used to determine the inspection items for remote inspection.
  • the hall call signal and the DS signal, GS signal, LB signal, DZ signal, or similar signals used to determine the conditions for activating the elevator safety circuit are used to determine the inspection items for remote inspection.
  • a major issue in this embodiment is how to carry out remote inspection in a situation where signals suitable for use with the remote inspection device 100 are greatly limited.
  • remote inspection when using a signal transmitted serially (for example, the remote inspection device 500 manufactured by Company X that communicates serially with the control panel 210 shown in FIG. 2), remote inspection can be easily performed as follows.
  • Elevators have their own speed patterns for each model and rated speed.
  • the speed pattern indicates the relationship between elapsed time and car speed when traveling from the starting floor to the destination floor.
  • the car 10 is in an accelerating state when it starts traveling from the starting floor, then in a constant speed state, and in a decelerating state just before arriving at the destination floor.
  • the control panel 210 can calculate and store the actual measured value of the speed pattern from the starting floor to the destination floor based on the pulse signal obtained from the rotary encoder of the hoist 250. Therefore, by comparing the actual measured value of the speed pattern with the elevator's unique speed pattern (prepared value), it is possible to determine whether the elevator's start state, accelerating state, constant speed state, and decelerating state are normal or not.
  • the remote inspection device 500 is connected to the control panel 210 by serial communication, it can access the internal signals held by the control panel 210, so that remote inspection can be easily realized by this method.
  • the remote inspection device 100 uses a "DZ signal" (a signal that identifies whether or not the car is within the door zone) as a signal to identify the position due to restrictions on signals suitable for use in remote inspection. From the DZ signal, it is not possible to determine whether the car 10 is accelerating, traveling at a constant speed, or decelerating. For this reason, in order to perform remote inspection using limited signals, it is necessary to devise a method of determination. In other words, when implementing remote inspection using a remote inspection device 500 capable of serial communication, there is no motivation to combine signals such as the DS signal, GS signal, LB signal, and DZ signal to determine the inspection items for remote inspection, and such an idea would not even occur to one.
  • DZ signal a signal that identifies whether or not the car is within the door zone
  • control panel 210 controls one elevator (cage 10) (see FIG. 3), and as shown in FIG. 1 and FIG. 7, one remote inspection device 100 is connected to the elevator system 200.
  • a remote inspection device 100 may be installed in each of the multiple elevators (cage 10).
  • one remote inspection device 100 may be installed for multiple elevators.
  • part of the signal lines included in the control cables 22, 23 connecting the individual car control unit 212 that controls the first elevator and the elevator equipment group 220b (car device 240, etc.) of the first elevator may be branched so that a judgment signal such as the DZ signal of the first elevator is input to the remote inspection device 100 (input IF 130) connected to the first elevator.
  • a portion of the signal lines included in the control cables 22, 23 connecting the individual car control unit 212 that controls the second elevator and the elevator equipment group 220b (such as the car device 240) of the second elevator can be branched so that a judgment signal such as the DZ signal of the second elevator is input to the remote inspection device 100 (input IF 130) connected to the second elevator.
  • each remote inspection device 100 acquires a judgment signal of the elevator car 10 (the target car that the control unit 152 judges) connected to the remote inspection device 100, and judges the remote inspection items for the target car.
  • Multiple remote inspection devices 100 connected to multiple elevators may be configured to be connected to one management server 300 and one terminal 400.
  • no hall call signal is sent to the hall device 230.
  • each remote inspection device 100 (output IF 140) is connected to the hall device 230 by a signal line.
  • the hall device 230 may be configured so that the contacts of the hall call button can be short-circuited by the signal output from any of the remote inspection devices 100.
  • both a signal line branched from a portion of the signal line included in the control cables 22, 23 connecting the individual car control unit 212 that controls the first elevator and the elevator equipment group 220b of the first elevator, and a signal line branched from a portion of the signal line included in the control cables 22, 23 that connect the individual car control unit 212 that controls the second elevator and the elevator equipment group 220b of the second elevator, may be configured to be input to one remote inspection device 100.
  • the remote inspection device 100 may determine the remote inspection items for each elevator and transmit the determination results for each elevator to the management server 300.
  • Fig. 9 is a diagram showing an example of a functional block diagram of the remote inspection system 1.
  • the remote inspection system 1 includes an acquisition unit 151, a control unit 152, an output unit 153, a reception unit 154, and an instruction unit 155, and stores a data group 156.
  • the reception unit 154 receives operations by a maintenance worker (a user who operates the terminal 400) from the input unit 420 of the terminal 400.
  • a maintenance worker a user who operates the terminal 400
  • the maintenance worker can set the date and time for performing a driving diagnosis, manually execute a driving diagnosis, and the like, by operating the input unit 420 on the display screen of the display unit 410 of the terminal 400 (see FIG. 10 described below).
  • the control unit 152 can access the data group 156.
  • the data group 156 includes setting data 422, a reference time database (also referred to as "DB") 423, operation history 424, and judgment results 425.
  • the control unit 152 reads or updates the setting data 422, the reference time DB 423, the operation history 424, and the judgment results 425.
  • the setting data 422 is data that stores various information related to remote inspection.
  • the setting data 422 records information about the building 2 and elevators related to the remote inspection.
  • the control unit 152 records the date and time in the setting data 422.
  • the reference time DB 423 is a database that records the reference time (for example, the reference time KA for the start-up time described below) that the control unit 152 uses to judge each inspection item of the remote inspection. Details will be described later with reference to Figures 12 and 13.
  • the operation history 424 is historical data of the signals of the elevator system 200 acquired by the remote inspection system 1.
  • the judgment results 425 are data that store the judgment results of each inspection item of the remote inspection.
  • the control unit 152 generates a hall call signal to generate an elevator hall call in order to perform an operation diagnosis based on the date and time of the operation diagnosis recorded in the setting data 422 or an instruction to execute the operation diagnosis by a maintenance worker (manually).
  • the instruction unit 155 transmits the hall call signal generated by the control unit 152 to the elevator equipment group 220 of the elevator system 200. By responding to this hall call, the elevator system 200 executes a diagnostic operation.
  • the acquisition unit 151 acquires judgment signals (DZ signal, LB signal, GS signal, DS signal, etc.) from the elevator equipment group 220 of the elevator system 200.
  • the acquisition unit 151 acquires not only judgment signals during the above-mentioned operation diagnosis, but also signals from the elevator equipment group 220 at all times.
  • the control unit 152 determines the inspection items for the remote inspection based on the determination signals acquired by the acquisition unit 151 (performs a determination process) and generates a determination result.
  • the inspection items for the remote inspection include the start-up state, accelerating state, constant speed state, decelerating state, landing state, destination floor button state, hall button state, door open/close state, and brake state (presence or absence of an abnormality in the electromagnetic brakes) of the car 10.
  • the control unit 152 records the acquired determination signals in the operation history 424, and records the determination results of the inspection items for the remote inspection in the determination result 425.
  • the output unit 153 outputs information such as the judgment results of the inspection items of the remote inspection to be displayed on the display unit 410 of the terminal 400. This allows the maintenance personnel to check the judgment results of the remote inspection on the display unit 410 of the terminal 400.
  • the remote inspection system 1 is configured with the remote inspection device 100, the management server 300, and the terminal 400.
  • the remote inspection system 1 may be configured without including the management server 300 and the terminal 400, or may be configured as an integrated device.
  • the remote inspection system 1 may be configured with only the remote inspection device 100, or may be configured with the remote inspection device 100 and the management server 300.
  • the remote inspection device 100 is configured to be configured with the control device 110, the input IF 130, the output IF 140, and the communication IF 120.
  • the functions of the input IF 130, the output IF 140, and the communication IF 120 may be integrated, and all functions may be realized in the control device 110.
  • the processes executed by each of the acquisition unit 151, the control unit 152, the output unit 153, the reception unit 154, and the instruction unit 155 may be processes executed by the processor 111 of the control device 110, or may be processes executed by any processor of the board provided in the remote inspection device 100.
  • the acquisition unit 151 may be processes executed by the processor of the input IF 130.
  • the instruction unit 155 may be processes executed by the processor of the output IF 140.
  • the output unit 153 and the reception unit 154 may be processes executed by any processor of the communication IF 120, the management server 300, and the terminal 400.
  • the remote inspection device 100 may be configured to include the acquisition unit 151, the control unit 152, the output unit 153, the reception unit 154, and the instruction unit 155, or the remote inspection device 100 may be configured to include the acquisition unit 151 and the instruction unit 155, and the management server 300 may be configured to include the control unit 152, the output unit 153, and the reception unit 154.
  • the data group 156 may be stored in the memory 112 of the control device 110, or a portion of it may be stored in the memory of the management server 300.
  • FIG. 10 is a diagram showing an example of the display screen 421 of the remote inspection system 1.
  • the display screen 421 is displayed on the display unit 410 of the terminal 400.
  • the display screen 421 displays remote inspection setting information, the judgment results of each item of the remote inspection, setting buttons, etc.
  • the top of the display screen 421 shows that the property name of Building 2 is "ABC Building.” Below that, the status of the driving diagnosis-related judgments is displayed. In this example, the results of the diagnostic driving between the first and fifth floors, as shown in Figure 8, are shown by driving direction.
  • the "UP direction” column shows the results when traveling from the 1st to 5th floors in the UP direction.
  • "Travel time” is the time required to travel from the 1st to 5th floors.
  • “Start-up time” is the time required for the car 10 to start up when starting travel from the 1st floor (until passing the door zone).
  • the time required to travel from the 1st to 2nd floors including accelerating travel state
  • the time required to travel from the 2nd to 3rd floors constant speed travel state
  • the time required to travel from the 3rd to 4th floors Constant speed travel state
  • the time required to travel from the 4th to 5th floors including decelerating travel state
  • the "measured time” is the time actually measured during diagnostic operation.
  • the “reference time” is the reference time for judging whether the measured time is normal or not.
  • the “judgment condition” is a condition determined based on the reference time, and if the measured time is within the numerical range of the judgment condition, it is judged to be in a "normal state.” On the other hand, if the measured time is outside the numerical range of the judgment condition, it is judged to be in a "modulated state.”
  • a “modulated state” refers to a state that does not correspond to a normal state.
  • a modulated state is a state that includes a state that does not go so far as to be an abnormal state, but that indicates a sign of a failure or abnormal state of some equipment in the elevator system 200. By determining whether or not it is a “modulated state,” it is possible to capture a sign of failure (a state prior to failure).
  • a circle is displayed if the judgment result is a "normal state”
  • a triangle is displayed if it is a "modulated state.”
  • the "Start-up time" on display screen 421 shows that the reference time is KA, the measured time is TA, the judgment conditions are KAL to KAH, and the judgment result is a normal state. This means that the condition KAL ⁇ TA ⁇ KAH is met, and therefore the normal state has been obtained as the judgment result for the start-up time.
  • the results of the determination based on the operation diagnosis are shown.
  • the start-up state, running state, car call button state, and hall call button state are determined to be in a "normal state”
  • the door open/close state is determined to be in a "modulated state.”
  • the results of the determination based on the continuous diagnosis are shown.
  • the brake state and floor landing state are determined to be in a "normal state.”
  • various buttons that can be clicked using the input unit 420 are arranged.
  • “Driving diagnosis settings” it is possible to set the date and time for performing driving diagnosis.
  • 23rd, 23:59 is input using the input unit 420.
  • the "Set” button is clicked, a driving diagnosis will be performed at 23:59 on the 23rd of every month. This setting information is recorded in the setting data 422.
  • the "Reference time” column is set to the time measured during the operation diagnosis performed when the remote inspection system 1 is installed in the building 2 as the reference time.
  • the "Save reference time” button is clicked, the time measured during the most recently performed operation diagnosis is updated as the reference time, and the judgment conditions are updated based on the updated reference time.
  • the measurement time of the startup time in the most recent driving diagnosis is measured as "TA”, and the reference time is "KU”.
  • the "Save Reference Time” button is clicked, the reference time is updated to "TA”, and the judgment conditions KAL and KAH are updated based on the updated reference time.
  • FIG. 11 is a flowchart of the remote inspection processing and the terminal setting processing.
  • the remote inspection system 1 executes the remote inspection processing.
  • the remote inspection processing is a processing for determining the inspection items of the remote inspection based on a determination signal.
  • the remote inspection processing may be started periodically (for example, every 100 msec).
  • step may be simply referred to as "S".
  • the terminal setting process is executed.
  • the terminal 400 determines in S151 whether or not the "Manual Driving Diagnosis" button has been clicked. If the "Manual Driving Diagnosis" button has been clicked (YES in S151), the terminal 400 sets a request for manual driving diagnosis (S152) and proceeds to S153. In this case, a request for manual driving diagnosis is sent to the remote inspection device 100. If the "Manual Driving Diagnosis" button has not been clicked (NO in S151), the terminal 400 proceeds to S153.
  • the terminal 400 determines whether the "Save Reference Time” button has been clicked. If the "Save Reference Time” button has been clicked (YES in S153), the terminal 400 sets a request to save the reference time (S154) and proceeds to S155. In this case, a request to save the reference time is sent to the remote inspection device 100. If the "Save Reference Time” button has not been clicked (NO in S153), the terminal 400 proceeds to S155.
  • the terminal 400 determines whether the "Set” button has been clicked. If the "Set” button has been clicked (YES in S155), the terminal 400 requests setting of the driving diagnosis setting time (S156) and ends the terminal setting process. In this case, the driving diagnosis setting time is transmitted to the remote inspection device 100. If the "Set” button has not been clicked (NO in S155), the terminal 400 ends the terminal setting process.
  • the control unit 152 of the remote inspection system 1 executes a reference time acquisition process (see FIG. 14 described later) in S100.
  • the reference time acquisition process the reference time to be used in determining the inspection items of the remote inspection is acquired from the reference time DB 423 and set.
  • the control unit 152 determines whether or not a "manual driving diagnosis” request has been made, or whether or not the current time has reached the driving diagnosis setting time.
  • a request for "manual driving diagnosis” is set (S152).
  • the driving diagnosis setting time is the time that has been set based on the request to set the driving diagnosis setting time (S156).
  • control unit 152 advances the process to S102. On the other hand, if the control unit 152 determines that none of the above conditions are met (NO in S101), the control unit 152 advances the process to S104.
  • the control unit 152 executes a driving diagnosis process in S102.
  • the driving diagnosis process is a process for transmitting a hall call signal when performing a driving diagnosis and for executing a judgment process based on the hall call signal.
  • a hall call signal is generated. For example, as explained using FIG. 8, a 1st floor UP hall call signal and a 5th floor DN hall call signal are generated to cause the car 10 to run from the 1st floor to the 5th floor and from the 5th floor to the 1st floor.
  • the instruction unit 155 outputs the hall call signal generated by the control unit 152 to the elevator system 200. This causes the car 10 to run in response to the hall call. Then, a judgment process is performed based on the running result. The details of the operation diagnosis process will be described later.
  • the acquisition unit 151 acquires a determination signal (DZ signal, LB signal, GS signal, DS signal, etc.) from the elevator system 200.
  • the control unit 152 continues to acquire the determination signal from the elevator system 200 until the end condition is met (YES in S105).
  • the termination condition may be met when the car 10 travels back and forth between the first and fifth floors, or the termination condition may be met every time the car 10 completes a specified operation (e.g., door opening/closing, brake release/application, completion of landing), or the termination condition may be met periodically (e.g., every few minutes).
  • a specified operation e.g., door opening/closing, brake release/application, completion of landing
  • the termination condition may be met periodically (e.g., every few minutes).
  • control unit 152 determines that the termination condition is met (YES in S105), it executes a judgment process (S106). In the judgment process, it judges the inspection items of the remote inspection.
  • the inspection items include the start-up state, accelerating state, constant speed state, decelerating state, landing state, destination floor button state, hall button state, door open/close state, and brake state, and judges one or more of the following items.
  • control unit 152 records the acquired determination signal in the operation history 424, and records the determination result obtained in the determination process in the determination result 425.
  • the output unit 153 outputs the judgment result obtained in the judgment process. For example, the output unit 153 outputs (transmits) the judgment result to the management server 300 via the network.
  • the terminal 400 can obtain the judgment result by accessing the management server 300 via the network. This makes it possible to check the judgment result on the display unit 410 of the terminal 400, as shown in FIG. 10.
  • control unit 152 executes a reference time update process and ends the remote inspection process. This process updates the reference time for mode B in the reference time DB 423, as will be described in detail later with reference to FIG. 13.
  • Switching the reference time 12 is a diagram showing an example of the reference time DB 423.
  • references time DB 423 values such as "running time” and "start-up time” are set, as in FIG. 10.
  • One of modes A to D can be set in advance as the mode for reading out the reference time DB 423.
  • mode A is set. Therefore, time KU is read as the "running time” in the UP direction in the reference time DB 423, and time KA is read as the "start-up time,” and these are displayed on the display screen 421 in FIG. 10.
  • mode A is set when you want to use a fixed value as the reference time every time.
  • the reference time set in the mode A item of the reference time DB 423 is used every time.
  • these reference times are set to those measured when the remote inspection device 100 was installed in building 2.
  • the "Save reference time” button is clicked on the display screen 421, the reference time is replaced with the time measured during the most recent operation diagnosis (diagnostic operation).
  • Mode B is set when you want to use the previous value as the reference time.
  • the reference time set in the Mode B item of the reference time DB 423 is used.
  • the reference time set in the Mode B item is updated every time a driving diagnosis (diagnostic driving) is performed.
  • diagnostic operation is performed once a month at 23:59 on the 23rd.
  • the reference time is time KA1 and the measured time is time TX for the startup time in the UP direction
  • the reference time for mode B in the reference time DB423 is updated from time KA1 to time TX.
  • time TX is used as the reference time for the startup time in the UP direction.
  • Mode C is set when it is desired to change the reference time according to the temperature of the machine room 5.
  • the temperature of the machine room 5 is measured by the temperature sensor 15.
  • the reference time set in the Mode C item is a value measured by classifying the temperature of the machine room 5 into cases where it is less than K1°C (up to K1°C), K1°C or higher and less than K2°C (K1°C or higher), K2°C or higher and less than K3°C (K2°C or higher), and K3°C or higher (K2°C or higher).
  • the reference time can be changed in increments of 5°C or 10°C.
  • This reference time may be set based on the results of diagnostic operation. For example, if the temperature in the machine room 5 is equal to or higher than K1°C and lower than K2°C when diagnostic operation is performed to measure the reference time, the reference time is recorded in the item equal to or higher than K1°C and lower than K2°C (K1°C or higher) in the reference time DB 423. Diagnostic operation may be performed multiple times and the average value set as the reference time.
  • the reference time set in the mode C item of the reference time DB 423 is used according to the current temperature of the machine room 5. For example, if the temperature of the machine room 5 during diagnostic operation is less than K1°C (up to K1°C), the reference time set in the item below K1°C (for example, "KA2" for the start time in the UP direction) is used.
  • the temperature measured by the temperature sensor 15 is not limited to the temperature of the machine room 5.
  • the temperature sensor 15 may be installed at any position within the elevator hoistway 8, around the hoistway 8, or around the elevator.
  • Mode D is set when you want to change the reference time according to the season.
  • the reference time set in the Mode D item is a value measured for each season, classified as spring, summer, fall, or winter. For example, if the diagnostic operation to measure the reference time was performed in summer, the reference time is recorded in the summer item.
  • the reference time set in the mode D item of the reference time DB 423 is used according to the season. For example, if the season during diagnostic operation is spring, the reference time set in the spring item (for example, "KU126" for the start time in the UP direction) is used.
  • Modes B to D are modes prepared for hydraulic elevators.
  • the oil characteristics change depending on the season and temperature, which can easily cause differences in the running characteristics of the car 10. For example, compared to the high temperatures of summer, the oil thickens in winter, so it takes longer to start up and running times are more likely to vary. For this reason, the reference time is switched depending on the season or temperature, which changes the oil characteristics. Also, the reason why the value from the previous diagnosis (the value from last month) is used in mode B is because it uses a reference time where the temperature environment or equipment environment is close to that of the most recent diagnosis.
  • the reference time recorded in the reference time DB 423 also includes the "time outside the door zone (also written as "DZ”).” This is the time measured from when the car 10 stops at a certain floor (the LB signal changes from ON to OFF) to when it leaves the door zone while stopped (the DZ signal changes from ON to OFF). For example, in the item for mode A in the reference time DB 423, the time KX is set as the "time outside the DZ.”
  • the reference time recorded in the reference time DB 423 also includes the door-opening times for the first to fifth floors.
  • the door-opening times in the reference time DB 423 are measured from when the car 10 stops at a certain floor and the GS signal and DS signal change from ON to OFF until they change from OFF to ON (door-opening time).
  • time KY1 is set as the door-opening time for the first floor.
  • time KY5 is set as the door-opening time for the fifth floor.
  • FIG. 13 is a flowchart of the reference time update process.
  • the reference time update process is executed in S109 (after the determination process has been executed) of the remote inspection process shown in FIG. 11.
  • the reference time update process is also executed when a request to save the reference time is made (S154).
  • control unit 152 determines that there is a "save reference time” request (YES in S251), it updates the reference time DB 423 (S252) and proceeds to S253. If the control unit 152 determines that there is no "save reference time” request (NO in S251), it proceeds to S253.
  • the reference times for modes A to D are updated. For example, in the UP direction running time, if the season of the operation diagnosis performed immediately before the "Save Reference Time” button was clicked was summer, the machine room temperature was K3°C or higher, and the measured time was "TUX", then "KU” in mode A, “KU1” in mode B, “KU5" in “K3°C or higher” in mode C, and “KU7” in “summer” in mode D are each changed to "TUX". This allows the measured time in the operation diagnosis to be updated as the reference time when the operation diagnosis is performed.
  • the control unit 152 updates each reference time for mode B in the reference time DB 423 (running time, start time, elapsed time between floors, time outside the DZ, door open time) (S254) and ends the reference time update process. If the reference time update process is not called in S109 (NO in S253), the control unit 152 ends the reference time update process as it is.
  • FIG. 14 is a flowchart of the reference time acquisition process.
  • the reference time acquisition process is executed in S100 of the remote inspection process shown in FIG. 11. If mode A is set (YES in S201), the control unit 152 acquires the reference time for mode A (S202) and proceeds to S209. For example, "KU" for mode A is acquired for the UP direction travel time.
  • control unit 152 acquires the reference time for mode B (S204) and proceeds to S209. For example, for the UP direction running time, "KU1" for mode B is acquired.
  • mode B is not set (NO in S203) but mode C is set (YES in S205)
  • the control unit 152 acquires the reference time for mode C that matches the current machine room temperature (S206) and proceeds to S209. For example, if the current machine room temperature is K3°C or higher, "KU5" from "K3°C ⁇ " in mode C is acquired for the UP direction running time.
  • mode C is not set (NO in S205) but mode D is set (YES in S207)
  • the control unit 152 acquires the reference time of mode C that matches the current season (S208) and proceeds to S209. For example, if the current season is summer, "KU7" for "summer” in mode C is acquired for the UP direction running time.
  • control unit 152 proceeds to S209. In S209, the control unit 152 sets the acquired reference time as the reference time to be used, and ends the reference time setting process.
  • the control unit 152 can update the measurement times calculated (measured) during operation diagnosis as the reference times (running time, start time, elapsed time between floors, time outside the DZ, door open time) in the reference time DB 423.
  • the control unit 152 can update the start time TA measured during operation diagnosis as the reference time KA (for the UP direction) for the start time in the reference time DB 423.
  • the inspection items for remote inspection can be determined using values that correspond to the operating state of the elevator at the site.
  • the reference times (running time, start-up time, elapsed time between floors, time outside the DZ, door open time) recorded in the reference time DB 423 include multiple values measured for each season (spring, summer, fall, winter values).
  • the control unit 152 selects one of the multiple values depending on the current season to determine the inspection item.
  • the reference times for start-up times recorded in the reference time DB 423 include multiple values measured for each season (KA6 to KA9 (in the case of the UP direction) in mode D).
  • the control unit 152 selects KA7 to determine the start-up time. In this way, highly accurate determination results can be obtained not only for rope elevators but also for hydraulic elevators, whose oil properties change depending on the season.
  • the reference times (running time, start time, elapsed time between floors, time outside the DZ, door open time) recorded in the reference time DB 423 include multiple values for each temperature range measured by the temperature sensor 15 (values of up to K1°C, K2°C-, K3°C-, K4°C-).
  • the control unit 152 selects one of the multiple values according to the current temperature measured by the temperature sensor 15 to determine the inspection item.
  • the reference time for the start time (reference time KA) recorded in the reference time DB 423 includes multiple values for each temperature range measured by the temperature sensor 15 (KA2-KA5 (in the case of the UP direction) in mode C).
  • the control unit 152 selects KA5 to determine the start time when the current temperature measured by the temperature sensor 15 is K4°C or higher. In this way, highly accurate determination results can be obtained not only for rope elevators but also for hydraulic elevators in which the properties of the oil change depending on the temperature.
  • the instruction unit 155 periodically transmits a hall call signal. Specifically, as shown in S101 to S102, a hall call is generated and output each time the operation diagnosis set time, which is once a month, is reached.
  • the control unit 152 changes the reference times (running time, start time, elapsed time between floors, time to be outside the DZ, and door open time) in the reference time DB 423 to the measured times calculated during the operation diagnosis (S109). For example, after performing an operation diagnosis, the control unit 152 changes the reference time KA of the start time in the reference time DB 423 to the measured time TA of the start time calculated during the operation diagnosis.
  • the reception unit 154 receives the operation of the maintenance worker (user) (clicking the "Manual Driving Diagnosis” button, clicking the "Save Reference Time” button, etc.).
  • the control unit 152 generates a hall call signal when the "Manual Driving Diagnosis” button is clicked (S151, S101).
  • the instruction unit 155 transmits the generated hall call signal.
  • the control unit 152 changes the reference times (running time, start time, elapsed time between floors, time to be outside the DZ, door open time) in the reference time DB 423 to the measured times calculated during the driving diagnosis (S252).
  • the control unit 152 changes the reference time KA of the start time in the reference time DB 423 to the measured time TA of the start time calculated during the driving diagnosis (in the case of the UP direction).
  • highly accurate judgment results can be obtained by manually changing the values to match the latest elevator operating conditions at the site.
  • it can also be adapted to changes in equipment conditions due to aging of the equipment or adjustments to valves in hydraulic elevators.
  • the inspection items of the remote inspection include the start state, accelerating state, constant speed running state, decelerating state, landing state, destination floor button (car call button) state, hall button (hall call button) state, door open/close state, and brake state of the car 10.
  • the judgment process a judgment is made on one or more of the above inspection items.
  • the judgment process is described as judging the state of the car call button as an inspection item for remote inspection. The judgment of the state of the car call button is described below with reference to Figures 15 to 24.
  • the plurality of running states include an acceleration running state in which the car 10 runs while accelerating, a constant speed running state in which the car 10 runs at a constant speed, and a deceleration running state in which the car 10 runs while decelerating.
  • the transmission process is a process of transmitting an UP hall call signal for the first floor that generates a hall call for the first floor in the UP direction on the first floor (the first floor in this embodiment), and a DN hall call signal for the second floor that generates a hall call for the second floor in the DN direction on the second floor (the fifth floor in this embodiment) that is higher than the first floor.
  • the transmission process includes a first transmission process and a second transmission process.
  • the first transmission process is a process of transmitting a DN hall call signal for the second floor that generates a hall call for the second floor in the DN direction after the waiting time TW (30 seconds in this embodiment) has elapsed since the car 10 arrived at the first floor based on the transmission of a UP hall call signal for the first floor.
  • the second transmission process is a process of transmitting a UP hall call signal for the first floor after the waiting time TW (30 seconds) has elapsed since the car 10 arrived at the second floor based on the transmission of a DN hall call signal for the second floor.
  • the present invention is not limited to generating a hall call after the waiting time TW has elapsed.
  • the first transmission process may simply transmit a DN hall call signal for the second floor after transmitting a UP hall call signal for the first floor, and the second transmission process may transmit a UP hall call signal for the first floor after transmitting a DN hall call signal for the second floor.
  • the first floor is the lowest floor at which the car 10 can stop (the lowest floor at which it can stop), which is the first floor.
  • the second floor is the highest floor at which the car 10 can stop (the highest floor at which it can stop), which is the fifth floor.
  • the first floor is not stoppable because the service is set to be disconnected or it is a floor at which it is physically not stoppable
  • the first floor is set to the second floor
  • the fifth floor is not stoppable
  • the second floor is set to the fourth floor. Note that this is not limited to the above, and any floor may be set to the first floor, and any floor above the first floor may be set to the second floor.
  • the contacts of the UP hall call button 81 on the first floor are modified to short-circuit when a pseudo UP hall call signal for the first floor is sent from the output IF 140 to the hall device 230 on the first floor (see Figure 7).
  • the contacts of the DN hall call button 82 on the second floor are modified to short-circuit when a pseudo DN hall call signal for the second floor is sent from the output IF 140 to the hall device 230 on the second floor.
  • the control unit 152 generates a hall call signal to be transmitted by a transmission process.
  • the instruction unit 155 performs a transmission process to transmit the generated hall call signal.
  • the operation of the car 10 based on the hall call signal transmitted by this transmission process is called “diagnostic operation.”
  • the determination process performed by the control unit 152 based on the determination signal acquired by the acquisition unit 151 as a result of the above transmission process is called “driving diagnosis.”
  • Figures 15 and 16 are timing charts for explaining the running state.
  • Figure 15 explains a case where the car 10 runs from the first floor to the fifth floor in response to a fifth floor DN hall call generated by the remote inspection device 100 (a fifth floor DN hall call signal transmitted by the instruction unit 155).
  • car 10 is stopped on the first floor. At this time, car 10 is located within the door zone on the first floor (DZ signal is ON), and the speed of car 10 is 0 (car 10 is stopped).
  • the remote inspection device 100 generates a DN hall call for the 5th floor.
  • the car 10 starts running to respond to the DN hall call for the 5th floor.
  • the position of the car 10 is outside the door zone for the 1st floor, and the DZ signal changes from the ON state to the OFF state.
  • the cage 10 When the cage 10 starts to move, the cage 10 enters an accelerating state. At time t2, when the speed of the cage 10 reaches the rated speed, the cage 10 changes from an accelerating state to a constant speed state. At time t3, which is a time TU12 that has passed since time t1, the cage 10 is located within the door zone on the second floor, and the DZ signal changes from the OFF state to the ON state. Furthermore, at time t4, the cage 10 is located outside the door zone on the second floor, and the DZ signal changes from the ON state to the OFF state.
  • car 10 changes from a constant speed traveling state to a decelerating traveling state in order to stop on the fifth floor.
  • time t10 which is a time TU45 that has passed since time t7
  • car 10 is located within the door zone of the fifth floor, and the DZ signal changes from OFF to ON.
  • Car 10 stops on the fifth floor, and the car speed becomes 0 (stopped state).
  • time t11 the speed of car 10 is 0, and the DZ signal is ON.
  • the remote inspection device 100 generates a 1st floor UP platform call (the instruction unit 155 transmits a 1st floor UP platform call).
  • the car 10 starts running to respond to the 1st floor UP platform call.
  • the position of the car 10 is outside the door zone of the 5th floor, and the DZ signal changes from the ON state to the OFF state.
  • the cage 10 When the cage 10 starts to move, the cage 10 enters an accelerating state. At time t2, when the speed of the cage 10 reaches the rated speed, the cage 10 changes from an accelerating state to a constant speed state. At time t3, which is a time TD54 that has passed since time t1, the cage 10 is located within the door zone of the fourth floor, and the DZ signal changes from the OFF state to the ON state. Furthermore, at time t4, the cage 10 is located outside the door zone of the fourth floor, and the DZ signal changes from the ON state to the OFF state.
  • car 10 changes from a constant speed traveling state to a decelerating traveling state in order to stop on the first floor.
  • time t10 which is a time TD21 that has passed since time t7
  • car 10 is located within the door zone on the first floor, and the DZ signal changes from OFF to ON.
  • Car 10 stops on the first floor, and the car speed becomes 0 (stopped state).
  • time t11 the speed of car 10 is 0, and the DZ signal is ON.
  • Figures 17 to 19 are diagrams for explaining the determination of the state of the car call button.
  • a case is described in which the state of the car call button can be correctly determined.
  • Figure 18, a case is described in which the state of the car call button cannot be determined because a car call has occurred.
  • Figure 19 a case is described in which the state of the car call button cannot be determined because of a malfunction of the car call button.
  • operation diagnosis is performed when the car 10 is stopped on the second floor.
  • the remote inspection device 100 At time t0, the remote inspection device 100 generates a first floor UP hall call 91.
  • the car 10 travels in the DN direction toward the first floor to respond to the first floor UP hall call 91.
  • the car 10 responds to the 1st floor UP hall call 91 and stops at the 1st floor.
  • the remote inspection device 100 generates a 5th floor DN hall call 92.
  • the car 10 starts UP running to respond to the 5th floor DN hall call 92.
  • the car 10 is running in the UP direction toward the 5th floor.
  • the car 10 responds to the 5th floor DN hall call 92 and stops at the 5th floor.
  • the remote inspection device 100 generates a 1st floor UP hall call 91.
  • the car 10 starts DN running to respond to the 1st floor UP hall call 91.
  • the car 10 is running in the DN direction toward the 1st floor.
  • the car 10 responds to the 1st floor UP hall call 91 and stops at the 1st floor.
  • car 10 travels back and forth between the bottom floor (1st floor) and the top floor (5th floor) at times t1 to t5.
  • the state of the car call button can be correctly determined because the car travels back and forth between the 1st and 5th floors without stopping at any floors along the way.
  • car 10 responds to the 4th floor car call 93, stops at the 4th floor, and then opens the doors. Then, to respond to the 5th floor DN hall call 92, car 10 starts traveling toward the 5th floor. At time t3, car 10 responds to the 5th floor DN hall call 92 and stops at the 5th floor.
  • the car stops at an intermediate floor, so the operation diagnosis is performed again.
  • the remote inspection device 100 again generates a call 91 for the 1st floor UP platform, causing the car 10 to stop at the 1st floor.
  • the remote inspection device 100 again generates a DN hall call 92 for the fifth floor, and at time t5, the car 10 is traveling in the UP direction toward the fifth floor. At time t6, the car 10 responds to the DN hall call 92 for the fifth floor and stops at the fifth floor. In this case, the car does not stop at an intermediate floor due to a car call.
  • the remote inspection device 100 generates a 1st floor UP hall call 91, and the car 10 travels from the 5th floor to the 1st floor. This allows the state of the car call button to be correctly determined in order to travel back and forth between the 1st and 5th floors without stopping at any floors along the way.
  • car 10 is stopped at the first floor.
  • a car call for the fourth floor is constantly registered due to a malfunction of the fourth floor car call button.
  • the button is pressed in and will not return to its original position, so that the switch of the fourth floor car call button is continuously in the ON state.
  • the car 10 is traveling in the UP direction toward the 5th floor in order to respond to the 5th floor DN hall call 92 generated by the remote inspection device 100.
  • the car 10 is traveling in the UP direction toward the 5th floor in order to respond to the 5th floor DN hall call 92 generated by the remote inspection device 100.
  • there is no passenger in the car 10 but a 4th floor car call 94 has been registered due to a malfunction.
  • car 10 responds to the 4th floor car call 94, stops at the 4th floor, and then opens the doors. Then, to respond to the 5th floor DN hall call 92, car 10 starts traveling toward the 5th floor. At time t3, car 10 responds to the 5th floor DN hall call 92 and stops at the 5th floor.
  • the remote inspection device 100 again generates a 1st floor UP hall call 91, causing the car 10 to stop at the 1st floor.
  • the 4th floor car call 94 remains registered.
  • the remote inspection device 100 again generates a DN hall call 92 for the 5th floor, and at time t5, the car 10 is traveling in the UP direction toward the 5th floor. However, at time t6, the car 10 responds to a car call 94 for the 4th floor and stops at the 4th floor. Because the car 10 stops at the 4th floor in this way, no matter how many times it is tried, it is not possible to measure the traveling time correctly. In this case, the state of the car call button cannot be determined correctly.
  • Figure 20 is a flowchart of the driving diagnosis process.
  • the driving diagnosis process is executed in S102 of the remote driving process.
  • the driving diagnosis process is executed when the "Manual Driving Diagnosis" button is clicked on the display screen 421 shown in Figure 10 or when the set driving diagnosis time (for example, 11:59 p.m. on the 23rd of each month) is reached.
  • the control unit 152 executes a driving generation process in S301. As described below, in the driving generation process, the control unit 152 generates a plurality of hall call signals. The instruction unit 155 executes a transmission process to sequentially transmit the generated hall call signals, thereby executing the diagnostic driving. The control unit 152 calculates the cage position, driving time, driving state, etc. of the cage 10 based on the judgment signal acquired by the acquisition unit 151 during the diagnostic driving by the transmission process.
  • control unit 152 determines whether there were no stops at any intermediate floors (2nd to 4th floors) between the top floor (1st floor) and the bottom floor (5th floor), excluding the forced stop floor. If the control unit 152 determines that there were no stops at any intermediate floors, excluding the forced stop floor (YES in S302), the process proceeds to S303. If the control unit 152 does not determine that there were no stops at any intermediate floors, excluding the forced stop floor (NO in S302), the process proceeds to S305.
  • the control unit 152 uses information including the DZ signal to identify the correspondence between the position of the car 10 between the first and fifth floors and the time (described later). Then, based on the correspondence between the position of the car 10 between the first and fifth floors and the time, the control unit 152 determines whether the car 10 has stopped at a floor between the first and fifth floors.
  • the control unit 152 executes a judgment process in S303. As described below, in the judgment process, the control unit 152 judges whether the state of the car call button is normal or not.
  • control unit 152 determines whether the state of the car call button has been determined. If the control unit 152 determines that the state of the car call button has been determined (YES in S304), it ends the driving diagnosis process.
  • control unit 152 determines that the car call button is in the state (NO in S304)
  • the process proceeds to S305.
  • the control unit 152 executes a process to cancel the determination. In the process of canceling the determination, if there is a determination of the traveling state that has already been made, this is cancelled.
  • control unit 152 determines that the cage 10 has stopped at a floor between the first and fifth floors based on the correspondence between the position of the cage 10 between the first and fifth floors and the time, it performs a cancellation process to cancel the determination of the determination process based on the transmission process.
  • control unit 152 determines whether the judgment of the judgment process has been canceled 10 consecutive times by the cancellation process. If the control unit 152 determines that the judgment of the judgment process has been canceled 10 consecutive times by the cancellation process (YES in S306), the control unit 152 advances the process to S307. If the control unit 152 does not determine that the judgment of the judgment process has been canceled 10 consecutive times by the cancellation process (NO in S306), the control unit 152 advances the process to S308.
  • the control unit 152 determines that the state of the car call button is in a modulated state, and ends the driving diagnosis process. In other words, if the determination of the determination process has been canceled 10 times in succession by the cancellation process, the control unit 152 determines that the state of the car call button is in a modulated state. In S308, the control unit 152 executes a waiting process (3 minutes) and returns the process to S301. As a result, the running generation process and the determination process are performed again after the 3-minute waiting time has elapsed.
  • the control unit 152 performs a cancellation process to cancel the judgment of the judgment process. What is canceled here is the judgment of the judgment process executed based on the transmission process of the hall call signal executed in the travel generation process.
  • the instruction unit 155 When a cancellation process is performed, the instruction unit 155 performs the transmission process of the hall call signal again in the running generation process after a specific time (3 minutes) has elapsed since the cancellation process.
  • the control unit 152 performs the judgment process again based on the transmission process that was performed again. Note that, if only one of the running directions, the UP direction or the DN direction, stops at an intermediate floor, the process may be repeated only for the running direction that stopped at the intermediate floor.
  • the reason for this cancellation process is that if the car stops at an intermediate floor, it is not possible to determine in the travel status determination process whether the travel time between the first and fifth floors is appropriate. Also, when determining the state of the car call button and the state of the hall call button, it is not possible to determine whether the car 10 stopped because of a car call button or hall call button pressed by a passenger between the first and fifth floors, or because of a malfunction of the car call button or hall call button. Therefore, after the cancellation process is performed, the travel occurrence process and determination process are performed again to check again.
  • car 10 responds to another hall call registered by the user, it may not be possible to determine the state of the car call button (YES in S304). In such a case, the system performs a cancellation process and then executes the trip generation process and determination process again.
  • the control unit 152 will not perform cancellation processing even if the car 10 stops at the forced stop floor. This is because the car 10 always stops at a forced stop floor, and stopping at a forced stop floor is unrelated to the determination of whether or not the car is in a modulated state. For this reason, when determining the running time from the first to fifth floors, a reference time or the like can be set in advance, including stopping at a forced stop floor (a running time is set on the assumption that the car will stop at a forced stop floor). Alternatively, the determination processing can be performed excluding the running time between the floors before and after the forced stop floor.
  • Diagnostic operation is performed late at night, when there are no passengers. If there happen to be passengers during this time, they may make a car or hall call, which may cause the train to stop at an intermediate floor. In this case, the travel time between the first to fifth floors cannot be measured correctly, so a cancellation process can be performed and the train judged again. In such a situation, the possibility of passengers making a car or hall call 10 times in a row and causing the train to stop at an intermediate floor is close to zero. However, if the train stops at an intermediate floor 10 times in a row, this is deemed to be a modulation state, as this may indicate some kind of malfunction.
  • the maintenance staff can confirm this on the terminal 400.
  • a malfunction may have occurred in which a hall call button or car call button for an intermediate floor has been pressed in, causing these buttons to constantly send ON signals. For this reason, the maintenance staff will visit the site to confirm the situation. If, as a result of the confirmation, the malfunction has been resolved, a manual operation diagnosis can be performed by clicking the "Manual operation diagnosis" button on the display screen 421 (see Figure 10).
  • FIG. 21 is a flowchart of the running generation process.
  • the control unit 152 When the driving diagnosis process starts, the control unit 152 generates a hall call signal to be generated in S401.
  • the instruction unit 155 transmits a top floor (fifth floor) DN hall call signal.
  • the instruction unit 155 transmits a bottom floor (first floor) UP hall call signal after a waiting time TW (30 seconds) from the arrival.
  • the instruction unit 155 transmits a top floor DN hall call signal after a waiting time TW (30 seconds) from the arrival.
  • the car 10 travels back and forth between the bottom floor and the top floor.
  • the hall call signal may be transmitted at any timing without waiting for the waiting time TW (30 seconds) to elapse.
  • "arriving" at a certain floor refers to the timing when the car enters the door zone at that floor (the timing when the DZ signal changes from OFF to ON). In this embodiment, the judgment is made using the DZ signal, but if the judgment is also made using the LB signal, "arriving" at a certain floor may refer to the timing when the DZ signal changes from OFF to ON and the LB signal changes from ON to OFF (i.e., the timing when the car 10 is braked by the brakes).
  • the instruction unit 155 transmits a bottom floor UP hall call signal.
  • the instruction unit 155 transmits a top floor DN hall call signal after a waiting time TW (30 seconds) from arrival.
  • the instruction unit 155 transmits a bottom floor UP hall call signal after a waiting time TW (30 seconds) from arrival. This causes the car 10 to travel back and forth between the bottom floor and the top floor.
  • the instruction unit 155 performs processing to transmit the next platform call signal.
  • the "next platform call signal” refers to the platform call signal to be transmitted next.
  • the signals are transmitted in the order of the top floor DN platform call signal, the bottom floor UP platform call signal, and the top floor DN platform call signal.
  • the first top floor DN platform call signal is transmitted, if the first top floor DN platform call signal has already been transmitted, the second bottom floor UP platform call signal is transmitted, and if the second bottom floor UP platform call signal has also been transmitted, the third top floor DN platform call signal is transmitted.
  • control unit 152 executes the cage information measurement process described below. Through the cage information measurement process, the control unit 152 calculates the cage position, running time, running state, etc. of the cage 10 based on the judgment signal acquired by the acquisition unit 151 during diagnostic operation by the transmission process.
  • the control unit 152 determines whether the car 10 has arrived at the floor where the hall call is generated. If the control unit 152 determines that the car 10 has arrived at the floor where the hall call is generated (YES in S404), the process proceeds to S405. If the control unit 152 does not determine that the car 10 has arrived at the floor where the hall call is generated (NO in S404), the process returns to S404. This causes the car 10 to wait until it arrives at the floor where the hall call is generated.
  • the control unit 152 determines whether or not all hall call signals have been transmitted. All hall call signals refer to all signals that were scheduled to be transmitted. If the control unit 152 determines that all hall call signals have been transmitted (YES in S405), it ends the driving diagnosis processing. If the control unit 152 determines that all hall call signals have not been transmitted (NO in S405), it returns the processing to S402. The processing of S402 to S405 is repeated until there are no hall call signals to be transmitted.
  • FIG. 22 is a flowchart of the cage information measurement process.
  • the control unit 152 determines in S501 whether the SDL signal is ON or not.
  • the processes in S501 to S510 are performed when the cage 10 travels from the lowest floor (first floor) to the highest floor (fifth floor).
  • control unit 152 determines that the SDL signal is ON (YES in S501), it advances the process to S502. If the SDL signal is ON, it can determine that the car position is on the lowest floor (first floor). As described above, it is possible to determine whether the car position is on the lowest floor or not without using the SDL signal.
  • control unit 152 determines that the SDL signal is ON (NO in S501)
  • the process proceeds to S511.
  • the control unit 152 sets the floor position i of the car 10 to the lowest floor.
  • control unit 152 determines whether the DZ signal has changed from an ON state to an OFF state. If the control unit 152 determines that the DZ signal has changed from an ON state to an OFF state (YES in S503), the process proceeds to S504. In this case, the car 10 is in a traveling state.
  • control unit 152 If the control unit 152 does not determine that the DZ signal has changed from the ON state to the OFF state (NO in S503), the process returns to S503. This causes the control unit 152 to wait until the DZ signal changes from the ON state to the OFF state.
  • the control unit 152 starts the timer in S504. This starts measuring the travel time from the first floor when the DZ signal changes from the ON state to the OFF state. Note that if the LB signal is also used, the measurement of the travel time from the first floor may also start when the LB signal changes from the OFF state to the ON state (the brake is released).
  • control unit 152 determines whether the running direction is the UP direction. Whether the running direction is the UP direction may be determined based on the UP signal, or may be determined by another method described above without using the UP signal.
  • control unit 152 determines that the running direction is the UP direction (YES in S505), it advances the process to S506. If the control unit 152 does not determine that the running direction is the UP direction (NO in S505), it ends the car information measurement process. If the running direction is not the UP direction, there is a possibility that a response is being made to a different hall call. In this case, driving diagnosis cannot be performed, so the car information measurement process is ended.
  • the control unit 152 sets a stop flag at floor position i. This makes it possible to determine whether or not the car has stopped between the first and fifth floors (an intermediate floor). In this way, using information including the DZ signal, and based on the correspondence between the position of the car 10 between the first and fifth floors and the time, it is determined whether or not the car 10 has stopped at a floor between the first and fifth floors. Note that if the running time calculated based on the DZ signal is longer than the reference time by a predetermined time or more, it may be determined that the car has stopped at an intermediate floor.
  • the control unit 152 determines whether the DZ signal has changed from an OFF state to an ON state. If the control unit 152 determines that the DZ signal has changed from an OFF state to an ON state (YES in S507), the process proceeds to S508. If the control unit 152 does not determine that the DZ signal has changed from an OFF state to an ON state (NO in S507), the process returns to S505. This causes the control unit 152 to wait until the DZ signal changes to an ON state.
  • the control unit 152 sets the running time and running state for floor positions i to i+1. For example, if the first floor is set as the floor position, this corresponds to the situation from time t1 to time t3 in FIG. 15.
  • the running time TU12 for floor positions 1 to 2 and the corresponding running state are set from the timing when the DZ signal changes from ON to OFF (t1 in FIG. 15) to the timing when the DZ signal changes from OFF to ON (t3 in FIG. 15).
  • the control unit 152 increments the floor position i by one.
  • the control unit 152 determines whether or not the floor position i is the top floor. If the control unit 152 determines that the floor position i is the top floor (YES in S510), it ends the car information measurement process. If the control unit 152 does not determine that the floor position i is the top floor (NO in S510), it returns the process to S505.
  • the floor position is updated every time the DZ signal changes from OFF to ON, and the running time and running state are set each time.
  • the second floor is set as the floor position, this corresponds to the situation from time t3 to time t5 in FIG. 15.
  • the running time TU23 for floor position 2-3 and the corresponding running state are set.
  • the floor position is updated, and running time TU34 for floor position 3-4, running time TU45 for floor position 4-5 and the corresponding running state are set.
  • the running state may be set to constant speed running state when the vehicle is only running at a constant speed between floors.
  • the running state may be set to accelerated running state when the vehicle is running at an accelerated speed between floors.
  • the running state may be set to decelerated running state when the vehicle is running at a decelerated speed between floors.
  • the running state is set to accelerated running state in the running section from the first floor to the second floor.
  • the running state is set to constant speed running state in the running section from the second floor to the third floor and the running section from the third floor to the fourth floor.
  • the running state is set to decelerated running state in the running section from the fourth floor to the fifth floor.
  • S511 to S520 The processing of S511 to S520 is performed when the car 10 travels from the top floor (fifth floor) to the bottom floor (first floor) (example in FIG. 16).
  • the control unit 152 determines whether the SUL signal is ON or not.
  • control unit 152 determines that the SUL signal is ON (YES in S511), it advances the process to S512. If the SUL signal is ON, it can be determined that the car position is on the lowest floor (first floor). As described above, it is possible to determine whether the car position is on the lowest floor or not without using the SUL signal. If the control unit 152 does not determine that the SUL signal is ON (NO in S511), it ends the car information measurement process.
  • the control unit 152 sets the floor position i of the car 10 to the top floor (fifth floor).
  • the control unit 152 determines whether the DZ signal has changed from the ON state to the OFF state. If the control unit 152 determines that the DZ signal has changed from the ON state to the OFF state (YES in S513), the process proceeds to S514. If the control unit 152 does not determine that the DZ signal has changed from the ON state to the OFF state (NO in S513), the process returns to S513. This causes the control unit to wait until the DZ signal changes from the ON state to the OFF state.
  • the control unit 152 starts the timer in S514. This starts measuring the travel time from the fifth floor when the DZ signal changes from the ON state to the OFF state. Note that if the LB signal is also used, the measurement of the travel time from the fifth floor may also start when the LB signal changes from the OFF state to the ON state (the brake is released).
  • the control unit 152 determines whether the driving direction is the DN direction. Whether the driving direction is the DN direction may be determined based on the DN signal, or may be determined by another method described above without using the DN signal. If the control unit 152 determines that the driving direction is the DN direction (YES in S515), the process proceeds to S516.
  • control unit 152 does not determine that the running direction is the DN direction (NO in S515), it ends the car information measurement process. If the running direction is not the DN direction, it may be responding to a different hall call. In this case, the diagnostic data cannot be obtained normally, so the process ends.
  • control unit 152 sets a stop flag at floor position i. This makes it possible to determine whether or not a stop occurred between the 5th floor and the 1st floor (an intermediate floor).
  • the control unit 152 determines whether the DZ signal has changed from an OFF state to an ON state. If the control unit 152 determines that the DZ signal has changed from an OFF state to an ON state (YES in S517), the process proceeds to S518. If the control unit 152 does not determine that the DZ signal has changed from an OFF state to an ON state (NO in S517), the process returns to S515. This causes the control unit to wait until the DZ signal changes to an ON state.
  • the control unit 152 sets the running time and running state for floor positions i to i-1. In S519, the control unit 152 decrements floor position i by one. In S520, the control unit 152 determines whether floor position i is the lowest floor. If the control unit 152 determines that floor position i is the lowest floor (YES in S520), it ends the car information measurement process. If the control unit 152 does not determine that floor position i is the lowest floor (NO in S520), it returns the process to S515.
  • the car position is specified by the floor position as described above.
  • the car position (floor position) is updated every time the DZ signal changes from OFF to ON. For this reason, the timing at which the floor position is updated differs between the UP direction and the DN direction.
  • the car position is defined as the second floor from the time the car enters the door zone on the second floor until just before the car enters the door zone on the third floor.
  • the car position is defined as the second floor from the time the car enters the door zone on the second floor until just before the car enters the door zone on the first floor.
  • this is not limited to this, and the division between floors may be set arbitrarily.
  • the car position may be defined as the second floor from the midpoint between the door zone on the first floor and the door zone on the second floor to the midpoint between the door zone on the second floor and the door zone on the third floor. This midpoint may be calculated based on the travel time.
  • the car position may be set based on the distance from the landing position on the lowest floor, rather than the floor position. For example, if the distance between each floor is 3 m, the car position when stopped on the first floor is 0 m, the car position when stopped on the second floor is 3 m, and the car position when stopped on the fifth floor is 12 m (3 m x 4).
  • the control unit 152 uses information including the DZ signal to calculate the position of the car 10 and the running time of the car 10 in the running section in which the car 10 runs in each of a plurality of running states (accelerating running state, constant speed running state, decelerating running state).
  • Information including the DZ signal includes, in addition to the DZ, a hall call signal and the like. Alternatively, it may also include the SUL signal, the SDL signal, the UP signal, and the DN signal, but as described above, it is possible to determine the running state without using these signals.
  • the stop flag at floor position i is set using the DZ signal in S506 and S516, but this is not limited to the above. If the LB signal is in the OFF state (braking state) at floor position i other than the top floor and the bottom floor, the stop flag at floor position i may be set.
  • FIG. 23 is a flowchart of the judgment process.
  • the state of the car call button is judged.
  • the control unit 152 judges whether the car 10 has traveled back and forth between the lowest floor (first floor) and the top floor (fifth floor) without stopping at a floor between the lowest floor and the top floor, based on the correspondence between the position of the car 10 between the lowest floor (first floor) and the top floor (fifth floor) and the time.
  • control unit 152 determines that this condition is met (YES in S601), it determines in S602 that the car call button is in a normal state and ends the determination process. If the control unit 152 does not determine that this condition is met (NO in S601), it ends the determination process.
  • FIG. 24 is a flowchart of the multi-car process.
  • the multi-car process may be executed in place of the processes S101 to S106 in the remote inspection process of Figure 11.
  • the command unit 155 does not perform the transmission process that transmits the generated hall call signal, and the control unit 152 does not perform the judgment process based on the transmission process. In other words, if there are multiple cars, the driving diagnosis is not performed. Even if the command unit 155 transmits a hall call signal, it is not known which car 10 will be assigned to the hall call. For example, since a situation in which car No. 1 is always assigned to a hall call is anticipated, it is not possible to freely operate all of the cars 10 through the transmission process.
  • the determination signal at this time is acquired to determine the running state.
  • a remote inspection device 100 is installed in each of a plurality of elevators (cars 10) (a remote inspection device 100 is installed for each elevator). Multi-car processing is performed for each remote inspection device 100 corresponding to each elevator.
  • the control unit 152 determines in S701 whether a predetermined period (for example, one month) has elapsed since the previous operation diagnosis setting time. If the control unit 152 determines that the predetermined period has elapsed (YES in S701), the process proceeds to S705. If the control unit 152 does not determine that the predetermined period has elapsed (NO in S701), the process proceeds to S702.
  • a predetermined period for example, one month
  • the acquisition unit 151 acquires a determination signal for the target car that the control unit 152 is to determine.
  • the target car is the elevator car 10 connected to the remote inspection device 100.
  • the control unit 152 determines whether or not the target car has made an UP run from the lowest floor (first floor) to the top floor (fifth floor) and a DN run from the top floor to the bottom floor (this is referred to as a "round trip run"). If the control unit 152 determines that a round trip run of the target car has occurred (YES in S703), the process proceeds to S704.
  • control unit 152 If the control unit 152 does not determine that the target cage has traveled back and forth (NO in S703), it returns the process to S701. As a result, the determination signal continues to be acquired until the target cage travels back and forth within the specified period.
  • control unit 152 executes a judgment process for the target car and ends the multi-car processing. Note that in the judgment process, if multiple sets of data from round-trip travel are acquired within a specified period, the judgment process may be performed using the data from the most recent round-trip travel. On the other hand, in S705, the control unit 152 determines that the state of the car call button for the target car is in a modulated state and ends the multi-car processing.
  • the control unit 152 executes a judgment process based on the judgment signal acquired from the acquisition unit 151 during the round trip run. Then, when the target cage does not make a round trip run within a specified period, the control unit 152 judges that the state of the cage call button of the target cage is in a modulated state.
  • the management server 300 acquires the judgment results of each cage 10 from the remote inspection device 100 corresponding to the elevator.
  • multi-car processing can be performed for each of the multiple cars 10. For example, when performing multi-car processing for the first car, a determination signal for the first car is acquired in S702, and a determination is made in S703 as to whether or not the first car has made a round trip.
  • the control unit 152 generates a hall call signal to be transmitted by the transmission process, and performs a judgment process to judge the inspection items of the remote inspection based on the judgment signal acquired by the acquisition unit 151 as a result of the transmission process.
  • the transmission process is a process of transmitting a 1st floor UP hall call signal that generates a 1st floor hall call in the UP direction on the 1st floor, and a 5th floor DN hall call signal that generates a 5th floor hall call in the DN direction on the 5th floor, which is higher than the 1st floor.
  • the inspection items include the state of the car call button that generates a car call for the car 10.
  • the control unit 152 uses information including the DZ signal to identify the correspondence between the position of the car 10 between the 1st floor and the 5th floor and the time.
  • the control unit 152 judges that the state of the car call button is normal when it is determined that the car 10 has traveled back and forth between the 1st floor and the 5th floor without stopping on a floor between the 1st floor and the 5th floor based on the correspondence.
  • the signals (DZ signal, LB signal, DS signal, GS signal) used to judge the conditions for activating the elevator safety circuit are used as the judgment signals for remote inspection.
  • hall calls are used instead of car calls as the output signals for operation diagnosis (diagnostic operation) of remote inspection.
  • control unit 152 determines based on the correspondence that the car 10 has stopped at a floor between the first and fifth floors, it performs a cancellation process to cancel the judgment of the judgment process based on the transmission process.
  • the instruction unit 155 performs the transmission process again.
  • the control unit 152 performs the judgment process again based on the transmission process that has been performed again.
  • the control unit 152 determines that the state of the car call button is in a modulated state.
  • the control panel 210 controls the car 10 to always stop at the forced stop floor when the car 10 passes the forced stop floor.
  • the control unit 152 does not perform a cancellation process even if the car 10 stops at the forced stop floor. In this way, it is possible to prevent erroneous detection of a malfunction due to stopping at a forced stop floor and to detect calls, etc., that occur due to a malfunction.
  • the specified number of times is 10. By doing this, it is possible to exclude a situation in which the car 10 has stopped due to a car call button or hall call button being pressed by a passenger by chance, and to detect a situation in which the car 10 has stopped due to a malfunction of the call button, etc.
  • the control unit 152 performs a judgment process based on the judgment signal acquired from the acquisition unit 151 during round-trip travel when the target car to be judged travels from the first floor to the fifth floor and from the fifth floor to the first floor, without performing a judgment process based on the transmission process.
  • the control unit 152 performs a judgment process based on the judgment signal acquired from the acquisition unit 151 during round-trip travel when the target car to be judged travels from the first floor to the fifth floor and from the fifth floor to the first floor, without performing a judgment process based on the transmission process.
  • multiple cars 10 cannot be freely run by transmitting a hall call signal, but the state of the car call button can be judged by making the car travel round-trip using the above method.
  • the first floor is the lowest floor at which the car 10 can stop
  • the second floor is the top floor where the car 10 can stop.
  • the management server 300 can send a command to execute remote inspection to the remote inspection device 100 and can receive a determination result from the remote inspection device 100.
  • the elevator system 200 (elevator equipment group 220 and control panel 210) and the remote inspection device 100 are installed in a first country (e.g., the United States), and the management server 300 is installed in a second country (e.g., Japan) different from the first country.
  • the remote inspection device 100 that performs remote inspection of the elevator system 200 operating in the first country can be managed by the management server 300 in the second country.
  • the remote inspection device 100 can be managed across countries by the management server 300.
  • An elevator remote inspection system for remotely inspecting an elevator, an instruction unit that performs a transmission process of transmitting a hall call signal to a device group of the elevator to generate a hall call for the elevator; an acquisition unit that acquires, as a determination signal, a signal input/output by parallel transmission between the elevator equipment group and a control panel that controls the elevator equipment group; a control unit that generates the hall call signal to be transmitted by the transmission process, and performs a determination process to determine an inspection item of the remote inspection based on the determination signal acquired by the acquisition unit as a result of the transmission process; An output unit that outputs a determination result of the inspection item, the transmission process is a process of transmitting a first hall call signal for generating a first hall call in an upward direction on a first floor, and a second hall call signal for generating a second hall call in a downward direction on a second floor that is higher than the first floor, the determination signal includes a first signal indicating either a first state in which the elevator car is located within a
  • Appendix 5 An elevator remote inspection system as described in any of Appendix 2 to Appendix 4, wherein when there are multiple cars controlled by the control panel, the control unit does not perform the judgment process based on the transmission process, but when the target car to be judged makes a round trip run from the first floor to the second floor and from the second floor to the first floor, it executes the judgment process based on the judgment signal during the round trip run acquired from the acquisition unit.
  • Appendix 6 The elevator remote inspection system described in Appendix 5, wherein, when there are multiple cars controlled by the control panel, the control unit determines that the state of the car call button of the target car is in the modulated state when the target car does not perform the round trip running within a specified period of time.
  • the first floor is the lowest floor at which the car can stop, 7.
  • a remote inspection device including the instruction unit, the acquisition unit, the control unit, and the output unit; Further comprising a management server that can be connected to the remote inspection device via a network and manages the remote inspection device, the management server is capable of transmitting an instruction to execute the remote inspection to the remote inspection device and receiving the determination result from the remote inspection device; the elevator equipment group, the control panel, and the remote inspection device are installed in a first country; 8. The elevator remote inspection system according to any one of claims 1 to 7, wherein the management server is installed in a second country different from the first country.
  • An elevator remote inspection method for performing remote inspection of an elevator performing a transmission process for transmitting a hall call signal to a device group of the elevator, the hall call signal being used to generate a hall call for the elevator; acquiring, as a determination signal, a signal input/output by parallel transmission between the elevator equipment group and a control panel that controls the elevator equipment group; generating the hall call signal to be transmitted by the transmission process, and performing a determination process to determine an inspection item of the remote inspection based on the determination signal acquired by the acquiring step as a result of the transmission process; and outputting a determination result of the inspection item.
  • the transmission process is a process of transmitting a first hall call signal for generating an upward first hall call on a first floor and a second hall call signal for generating a downward second hall call on a second floor higher than the first floor
  • the determination signal includes a first signal indicating either a first state in which the elevator car is located within a door zone indicating a positional range of the elevator car in which a door of the elevator car can be opened or closed, or a non-first state which is not the first state
  • the inspection items include a state of a car call button that generates a car call for the car
  • the step of performing the determination process includes: determining a correspondence between the position of the car between the first floor and the second floor and time using information including the first signal; and determining, based on the correspondence, that the car has shuttled between the first floor and the second floor without stopping at any floor between the first floor and the second floor, determining that the status of the car call button is normal.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

L'invention concerne une unité de commande (152) qui utilise des informations comprenant un signal DZ pour spécifier la correspondance entre la position d'une cabine (10) entre le premier étage et le cinquième étage et le temps. Lorsqu'il est déterminé sur la base de la correspondance que la cabine (10) a effectué un aller-retour entre le premier étage et le cinquième étage sans s'arrêter sur un étage entre le premier étage et le cinquième étage, l'unité de commande (152) détermine que le bouton d'appel de cabine est dans un état normal.
PCT/JP2023/035881 2022-11-17 2023-10-02 Système d'inspection à distance d'ascenseur et procédé d'inspection à distance d'ascenseur WO2024106042A1 (fr)

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JP2022184152A JP7361873B1 (ja) 2022-11-17 2022-11-17 エレベータ遠隔点検システムおよびエレベータ遠隔点検方法

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07228443A (ja) * 1994-02-15 1995-08-29 Hitachi Building Syst Eng & Service Co Ltd エレベーターの点検装置
JP2013112482A (ja) * 2011-11-30 2013-06-10 Mitsubishi Electric Building Techno Service Co Ltd エレベータの診断運転システム
CN104261217A (zh) * 2014-09-16 2015-01-07 快意电梯股份有限公司 电梯远程监控系统中数据采集及传输终端
JP2015231887A (ja) * 2014-06-09 2015-12-24 東芝エレベータ株式会社 故障診断装置及び故障診断方法
WO2018070006A1 (fr) * 2016-10-13 2018-04-19 三菱電機株式会社 Circuit de commande d'ascenseur
JP2022118796A (ja) * 2021-02-03 2022-08-16 日本昇降機株式会社 エレベータの監視装置、監視システム、及び監視方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7228443B2 (ja) 2019-03-28 2023-02-24 株式会社フジタ 監視システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07228443A (ja) * 1994-02-15 1995-08-29 Hitachi Building Syst Eng & Service Co Ltd エレベーターの点検装置
JP2013112482A (ja) * 2011-11-30 2013-06-10 Mitsubishi Electric Building Techno Service Co Ltd エレベータの診断運転システム
JP2015231887A (ja) * 2014-06-09 2015-12-24 東芝エレベータ株式会社 故障診断装置及び故障診断方法
CN104261217A (zh) * 2014-09-16 2015-01-07 快意电梯股份有限公司 电梯远程监控系统中数据采集及传输终端
WO2018070006A1 (fr) * 2016-10-13 2018-04-19 三菱電機株式会社 Circuit de commande d'ascenseur
JP2022118796A (ja) * 2021-02-03 2022-08-16 日本昇降機株式会社 エレベータの監視装置、監視システム、及び監視方法

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