Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions

Definitions

• This disclosure relates to elevator systems.
• the conventional elevator earthquake control operation system disclosed in Patent Document 1 below comprises an earthquake information receiving device that receives an emergency earthquake warning including the time of occurrence of an earthquake and the location of the epicenter; an earthquake information prediction device that predicts the time of arrival of the main shock and the magnitude of the shaking based on the earthquake information received by the earthquake information receiving device; long-period vibration detection means that detects long-period vibrations in the building in which the elevator is installed; and an elevator control device that, when the earthquake information receiving device receives the emergency earthquake warning, performs earthquake control operation of the elevator based on the predicted information predicted by the earthquake information prediction device and the detection results of the long-period vibration detection means.
• the traditional method for detecting long-period shaking in elevators is to install a long-period vibration sensor at the top of the elevator shaft (such as in the machine room).
• the long-period vibration sensor has different levels based on its setting, and the detected level is sent from the sensor to the control panel. This data is used to control elevator operation, i.e., control operation during long-period vibration. For example, Level 0: Stop for a certain period of time, Level 1: Reduced speed, Level 2 and above: Suspended operation, etc.
• the current problem is that the setting for each level is set low so that it activates before the building shakes significantly. This means that the sensor can be activated by strong winds and other factors in addition to the long-period shaking caused by earthquakes, which can result in reduced operating efficiency. Changing the sensor setting requires the assistance of a specialized technician.
• the purpose of this disclosure is to provide an elevator system that can operate appropriately when long-period seismic motion occurs.
• the elevator system disclosed herein comprises a receiving means for receiving long-period seismic motion data included in the Earthquake Early Warning distributed by the Japan Meteorological Agency when an earthquake occurs, an estimation means for estimating the long-period seismic motion class of the building based on pre-stored building information and the long-period seismic motion data, and a determination means for determining elevator control content based on the estimated long-period seismic motion class.
• This disclosure makes it possible to provide an elevator system that can operate appropriately in the event of long-period seismic motion.
• FIG. 1 is a diagram showing an elevator system according to a first embodiment.
• FIG. FIG. 1 is a diagram illustrating an example of a configuration for realizing the functions of an elevator control device according to a first embodiment.
• Fig. 1 is a diagram showing an elevator system according to Embodiment 1.
• the elevator system 1 of this embodiment includes an elevator control device 2 that controls the operation of the elevator, and a management server 3 that manages the elevator control device 2.
• the management server 3 receives long-period ground motion data included in the Earthquake Early Warning distributed by the Japan Meteorological Agency 4 when an earthquake occurs.
• the management server 3 corresponds to the receiving means.
• the long-period ground motion data may include at least one of the following information: the latitude and longitude and depth of the epicenter, the magnitude, the time of the earthquake occurrence, and the area where long-period ground motion of scale 3 or higher is expected.
• the long-period ground motion data may also include at least one of the following: the maximum value of the long-period ground motion scale for each area, the long-period ground motion scale for each individual observation point, the long-period ground motion scale by period, the maximum value of the absolute velocity response spectrum value in the period band from 1.6 seconds to 7.8 seconds, and the maximum value of the absolute velocity response spectrum value.
• the management server 3 pre-stores information about the building in which the elevator is installed.
• the building information may include, for example, at least one of the following: the latitude and longitude of the building's location, the building's height, and the building's structural type (steel, reinforced concrete, steel reinforced concrete, etc.). Using this data makes it possible to accurately estimate the class of long-period seismic motion of the building.
• the management server 3 may also calculate the building's resonant frequency from the building's height and structure.
• the management server 3 estimates the class of long-period seismic motion for the building in question based on pre-stored building information and long-period seismic motion data.
• the management server 3 corresponds to the estimation means.
• by using the building information and long-period seismic motion data it is possible to accurately estimate the class of long-period seismic motion for the building in question.
• Class 1 long-period earthquake motion corresponds to a moderately large shaking, and is characterized as follows: Most people indoors feel the shaking. Some are startled. Blinds and other hanging objects sway violently.
• Class 2 long-period earthquake motion corresponds to large shaking, and is characterized by the following: Large shaking is felt indoors, and people feel the need to hold on to something. People find it difficult to walk without holding on to something, and other movements are hindered. Furniture with casters may move slightly. Dishes on shelves and books on bookshelves may fall.
• Class 3 long-period earthquake motion corresponds to extremely strong shaking, and is characterized by the following: It becomes difficult to stand. Furniture with casters moves significantly. Unsecured furniture may move, and unstable items may fall over. Partition walls may develop cracks.
• Class 4 long-period earthquake motion corresponds to extremely strong shaking, and is characterized by the following: You will be unable to stand and will have to crawl to move. You will be thrown about by the shaking. Furniture with casters will move significantly and some may fall over. Most loose furniture will move and some may fall over. Partition walls and other structures will develop many cracks and fissures.
• the management server 3 determines the elevator control content according to the estimated class of long-period earthquake motion.
• the management server 3 corresponds to the determination means.
• the management server 3 may reduce the elevator speed or suspend operation according to the estimated class of long-period earthquake motion. For example, if the management server 3 estimates that the shaking of the building corresponds to class 1 of long-period earthquake motion, it may reduce the elevator speed. Furthermore, if the management server 3 estimates that the shaking of the building corresponds to class 2 of long-period earthquake motion, it may suspend elevator operation.
• elevators can be operated in an appropriate controlled manner when long-period seismic motion occurs. Furthermore, appropriate controlled operation can be performed even in buildings where long-period vibration sensors are not installed. Furthermore, controlled operation can be performed before the long-period seismic motion becomes large.
• the elevator system 1 may be applied to buildings in which long-period vibration sensors are installed. In buildings in which long-period vibration sensors are installed, there is a possibility that the sensors may malfunction if they detect swaying of the building due to wind. In contrast, by applying the elevator system 1 of this embodiment, it is possible to prevent malfunctions due to wind. In this case, the sensitivity of the long-period vibration sensor may be reduced. This makes it possible to more reliably prevent malfunctions due to wind.
• the elevator control device 2 may transmit information detected by the long-period vibration sensor to the management server 3.
• Elevator system 1 is equipped with a modification means that allows user 5 to change the elevator control content according to the estimated long-period seismic motion class.
• a modification means that allows user 5 to change the elevator control content according to the estimated long-period seismic motion class.
• user 5 can change the elevator control content so that the elevator speed is reduced when the long-period seismic motion is estimated to correspond to class 2, and the elevator operation is suspended when the long-period seismic motion is estimated to correspond to class 3.
• Management server 3 stores the elevator control content according to the long-period seismic motion class set by user 5, and controls elevator control device 2 according to that control content.
• user 5 can change the elevator control content according to the estimated long-period seismic motion class, allowing for flexible settings that meet user 5's needs.
• the elevator control device 2 or management server 3 may verify whether the estimated long-period seismic motion class is correct based on the estimated long-period seismic motion class and the signal detected by the long-period vibration sensor. For example, if the long-period seismic motion is estimated to correspond to long-period seismic motion class 2 and the long-period vibration sensor detects long-period seismic motion class 1 while the elevator control device 2 is out of service, the estimate of long-period seismic motion class 2 is incorrect, and it is considered that the long-period seismic motion actually is class 1, so the elevator control device 2 may resume operation suspension.
• the elevator system 1 may use AI to learn the data sensed by the long-period vibration sensor and the estimated results of the long-period seismic motion class as big data. The learning results may then be used to modify the mathematical formula for estimating the long-period seismic motion class.
• FIG. 2 is a diagram showing an example of a configuration for realizing the functions of the elevator control device 2 in embodiment 1.
• the processing circuit may be dedicated hardware 600.
• the processing circuit may include a processor 601 and memory 602. A portion of the processing circuit may be formed as dedicated hardware 600, and the processing circuit may further include a processor 601 and memory 602. In the example shown in FIG. 2, a portion of the processing circuit is formed as dedicated hardware 600.
• the processing circuit further includes a processor 601 and memory 602 in addition to the dedicated hardware 600.
• a processing circuit part of which is at least one dedicated hardware 600, may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
• the processing circuit includes at least one processor 601 and at least one memory 602, the functions of each part of the elevator control device 2 are realized by software, firmware, or a combination of software and firmware.
• Processor 601 realizes the functions of each section by reading and executing the programs stored in memory 602.
• Processor 601 is also called a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP.
• Memory 602 includes, for example, non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, as well as magnetic disks, flexible disks, optical disks, compact disks, minidisks, and DVDs.
• the processing circuit can realize the functions of the elevator control device 2 through hardware, software, firmware, or a combination of these.
• Each function of the elevator control device 2 may be realized by multiple devices working together, or by a single device.
• at least some of the functions of the elevator control device 2 may be implemented on a server or the like on an external network.
• Elevator system 2. Elevator control device, 3. Management server, 4. Japan Meteorological Agency, 5. User, 600. Dedicated hardware, 601. Processor, 602. Memory

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• Maintenance And Inspection Apparatuses For Elevators (AREA)

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Applications Claiming Priority (1)

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ID=97403069

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Citations (6)

• 2024
  • 2024-04-16 JP JP2024572628A patent/JPWO2025220111A1/ja active Pending
  • 2024-04-16 WO PCT/JP2024/015112 patent/WO2025220111A1/ja active Pending

Patent Citations (6)

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