CN112384462B - Elevator diagnosis system - Google Patents
Elevator diagnosis system Download PDFInfo
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- CN112384462B CN112384462B CN201880095001.5A CN201880095001A CN112384462B CN 112384462 B CN112384462 B CN 112384462B CN 201880095001 A CN201880095001 A CN 201880095001A CN 112384462 B CN112384462 B CN 112384462B
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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
- B66B3/02—Position or depth indicators
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- 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
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- 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
Abstract
Conventionally, since measurement of a stop position requires a control signal of an elevator, measurement and diagnosis of a stop position cannot be performed in an elevator such as a relay elevator which cannot obtain a significant control signal. Therefore, the elevator diagnosis system of the present invention includes: a landing door detection unit that is provided in a car door of the car and detects a landing door; an acceleration measuring unit provided at the car door and measuring an acceleration; a movement amount measuring unit that measures, as a stop position, a movement amount of the car until the car door opens after the landing door detecting unit detects the landing door, after the acceleration measuring unit detects deceleration of the car; and an abnormality diagnosis unit that diagnoses a stop abnormality of the car based on the movement amount, and can detect the abnormality even when a stop error is further increased due to aging or the like, in a case where an elevator system in which a significant control signal cannot be obtained is a diagnosis target.
Description
Technical Field
The present invention relates to an elevator diagnosis system that detects an abnormality in a landing error of a car.
Background
In a conventional elevator system, in order to control a stop position of a car, a shield plate serving as a position detection reference is provided at a predetermined position in a hoistway, and a car moving distance is controlled based on a detection position of the shield plate detected by a shield plate detection device provided in the car, thereby stopping the car at a desired stop position.
However, in this elevator system, the number of the floors at which the car stops needs to be increased in proportion to the number of the floors provided in the hoistway, and particularly in a high-rise building, the installation cost of the elevator system increases.
Therefore, the stop position of the car is controlled based on the landing door instead of the shielding plate, thereby reducing the number of components of the elevator system and realizing desired stop position control (patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2001-39639
Disclosure of Invention
Problems to be solved by the invention
However, in patent document 1, since it is necessary to use a control signal of the elevator system for measurement of the landing position, there is a problem that the landing position cannot be measured and the landing error cannot be diagnosed when an elevator system in which a meaningful control signal cannot be obtained, such as a relay elevator in which no control signal is originally present, an elevator manufactured by another company in which the meaning of the control signal is unknown, or the like, is targeted for diagnosis.
Therefore, an object of the present invention is to provide an elevator diagnosis system capable of detecting an abnormality when a landing error is further expanded due to aging or the like even when an elevator system in which a significant control signal cannot be obtained is a diagnosis target.
Means for solving the problems
In order to solve the above problem, an elevator diagnosis system according to the present invention includes: a landing door detection unit that is provided in a car door of the car and detects a landing door; an acceleration measuring unit provided at the car door and measuring acceleration; a movement amount measuring section that measures, as a stop position, a movement amount of the car until the car door is opened after the landing door detecting section detects the landing door, after the acceleration measuring section detects deceleration of the car; and an abnormality diagnosis unit that diagnoses a stop abnormality of the car based on the movement amount.
Further, the elevator diagnosis system includes: a landing door detection unit that is provided in a car door of the car and detects a landing door; an acceleration measuring unit provided at the car door and measuring acceleration; a movement amount measuring section that measures, as a stop position, a movement amount of the car until the car stops after the landing door detecting section detects the landing door, after the acceleration measuring section detects deceleration of the car; and an abnormality diagnosis unit that diagnoses a stop abnormality of the car based on the movement amount.
Effects of the invention
According to the elevator diagnosis system of the present invention, even when an elevator system in which a meaningful control signal cannot be obtained is a diagnosis target, if a landing error is further increased due to aging or the like, the abnormality can be detected.
Drawings
Fig. 1 is a schematic diagram of an elevator system according to an embodiment.
Fig. 2 is a configuration diagram of an elevator door opening and closing apparatus according to an embodiment.
Fig. 3 shows the changes in speed and flux density observed during operation of the car according to an embodiment.
Fig. 4 is a flowchart showing a diagnosis process of the elevator diagnosis system according to the embodiment.
FIG. 5 is a flowchart showing a process of detecting the current position of the car according to an embodiment
Detailed Description
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an elevator system according to an embodiment of the present invention. As shown here, the elevator system of the present embodiment is constituted by: a car 1 which ascends and descends among a plurality of floors facing a lifting passage; a car door 2 installed at an opening of the car 1; a door opening/closing device 3 that opens and closes the car door 2; a 3-axis acceleration sensor 4 and a 3-axis magnetic sensor 5 provided outside the car door 2; a hoist 6 for raising and lowering the elevator car 1; a balance weight 7 for reducing the load when the car 1 is lifted; a sheave 8 for avoiding contact of the car 1 with the balance weight 7; a main rope 9 connecting the car 1 and the counterweight 7; a metal landing door 10 that opens and closes in conjunction with the opening and closing of the car door 2; a control device 11 for controlling the operation of the elevator system; and a diagnostic device 12 for diagnosing the elevator system based on the output signals of the 3-axis acceleration sensor 4 and the 3-axis magnetic sensor 5. The diagnostic device 12 is connected to an external control center 13 via a wired or wireless communication line.
Among them, the 3-axis acceleration sensor 4, the 3-axis magnetic sensor 5, and the diagnostic device 12 can be mounted after the elevator system is mounted, and therefore, an elevator diagnostic system independent of the already-installed control device 11 is configured. In fig. 1, a building having a number of landings of 2 is illustrated, but the number of landings may be 3 or more.
A diagnosis device 12 diagnoses presence or absence of an abnormality in a landing error δ of the car 1 based on output signals of the 3-axis acceleration sensor 4 and the 3-axis magnetic sensor 5, the diagnosis device 12 being composed of: a car position detection unit 12a that detects the position of the car 1; a car door opening/closing detection unit 12b that detects an open/closed state of the car door 2; a car movement amount measuring unit 12c that measures a movement amount l of the car 1; a running state detection unit 12d for detecting the running state of the elevator; an abnormality diagnosis unit 12e for diagnosing whether or not the stop position L of the car 1 is abnormal based on signals from the above units; the initial value L of the stop position L initially measured by the abnormality diagnosis unit 12e is stored for each floor0The initial value storage unit 12 f; a stop error storage unit 12g for storing a stop error δ described later for each floor; and an abnormality reporting unit 12h that notifies the maintenance worker of an abnormality when the abnormality diagnosing unit 12e diagnoses the parking position L as abnormal.
More specifically, the diagnostic device 12 is a computer including an arithmetic device such as a CPU, a main storage device such as a semiconductor memory, an auxiliary storage device such as a hard disk, and hardware such as a communication device and a speaker. The car position detecting unit 12a and the like are realized by an arithmetic device executing a program loaded in a main storage device while referring to a database recorded in an auxiliary storage device, but a description thereof will be omitted as appropriate.
Fig. 2 is a diagram showing the structures of the car door 2 and the door opening/closing apparatus 3. As shown here, the car door 2 is constituted by a right door panel 2R and a left door panel 2L. Further, the door opening/closing device 3 is constituted by: a door guide 3a which serves as a track for the two door panels, a door motor 3b which generates a driving force for the two door panels, a door driving belt 3c which transmits the driving force generated by the door motor 3b to the two door panels, and a door pulley 3d for the door driving belt 3c provided in a pair with the door motor 3 b.
Here, in the present embodiment, the 3-axis acceleration sensor 4 and the 3-axis magnetic sensor 5 are provided in the vicinity of the closed end portion of the left door panel 2L and at a substantially middle portion in the height direction, and the opening and closing direction of the car door 2 is defined as the x-axis, the lifting direction of the car 1 is defined as the y-axis, and the front-rear direction of the car 1 is defined as the z-axis. In fig. 1 and 2, the configuration in which 1 3-axis acceleration sensor 4 and 3-axis magnetic sensor 5 are provided in the substantially middle portion of the car door 2 is illustrated, but the 3-axis acceleration sensor 4 and 3-axis magnetic sensor 5 may be provided in the upper portion and the lower portion of the car door 2, respectively. The two sensors are not necessarily 3-axis sensors, and the function of detecting acceleration and magnetic flux density in directions that are not necessary in the processing described later may be omitted.
Fig. 3 is an example of changes in speed and magnetic flux density observed during operation of the elevator system, and specifically illustrates the elevating speed of the car 1, the opening/closing speed of the car door 2, and the outputs of the 3-axis magnetic sensor 5 in the z-axis direction and the x-axis direction, which are observed until the car 1 moves from the lower floor, which is the standby floor, to the upper floor, which is the target floor, the car door 2 opens, a passenger standing at the upper floor gets on the car 1, and the car door 2 closes.
That is, fig. 3 (a) and (b) show the acceleration a in the y-axis direction detected by the 3-axis acceleration sensor 4yAnd acceleration a in the x-axis directionxVelocity v obtained by integrationyAnd velocity vxThe values correspond to the ascending/descending speed of the car 1 (positive ascending speed and negative descending speed) and the opening/closing speed of the car door 2 (positive closing speed and negative opening speed). In addition, fig. 3(c) and (d) show the z-axis magnetic flux density M detected by the 3-axis magnetic sensor 5zAnd magnetic flux density M in the x-axis directionxThe state corresponds to a metal detection state in the direction of the landing door 10 (Low is when detected, High is not detected), and an open/close state of the car door 2 (Low is closed, High is open).
In the figure, time taShows the time when the car 1 passes the upper end of the landing door 10 of the waiting floor (lower floor), and time tbShows the time when the car 1 reaches the lower end of the landing door 10 of the destination floor (upper floor), and time tcAnd time tdIndicating the opening start time and the opening completion of the car door 2Time of day, time teAnd time tfIndicating the closing start time and the closing completion time of the car door 2. Further, since the landing door 10 is opened and closed in conjunction with the car door 2, time t is the time tcTo time tfThe landing door 10 is also opened at a start time, opened at a completion time, closed at a start time, and closed at a completion time.
When the car 1 moves from the standby floor (lower floor) to the destination floor (upper floor), the car 1 reaches the destination floor (upper floor) after passing through the acceleration period, the constant speed period, and the deceleration period in this order as shown in fig. 3 (a). During this time, at time taSince the vicinity is distant from the landing door 10 at the lower floor, as shown in fig. 3(c), the magnetic flux density M corresponding to the front-rear direction of the car 1zAnd (4) increasing. Then, the magnetic flux density M is close to the landing door of the upper floor of the standby floor (lower floor), and hencezDecreases, when moving away from the landing door, the magnetic flux density MzAnd again increased. Magnetic flux density MzUntil at time tbThe vicinity is close to the landing door 10 of the destination floor (upper floor). Therefore, it is possible to respond to the magnetic flux density MzWith a predetermined threshold value Mz_thDetermines whether the car 1 is located near the landing door 10.
When the car 1 reaches the destination floor (upper floor), the car door 2 is opened at time tcThereafter, since the left door panel 2L provided with the 3-axis magnetic sensor 5 in the vicinity of the closing end is separated from the right door panel 2R, as shown in fig. 3(d), the magnetic flux density M corresponding to the opening and closing direction of the car door 2 is obtainedxAnd (4) increasing. Thereafter, at time t, which is the closing completion time of the car door 2fNearby, the left door panel 2L approaches the right door panel 2R, and thus the magnetic flux density MxAnd (4) reducing. Therefore, it is possible to respond to the magnetic flux density MxWith a predetermined threshold value Mx_thThe opening/closing state of the car door 2 is determined based on the magnitude relation.
Next, the diagnosis process of the stop position of the car 1 by the diagnosis device 12 of the present embodiment will be described with reference to fig. 4.
First, in step S1, the driving state detection unit 12d outputs the output of the 3-axis acceleration sensor 4, that is, outputs the output to the 3-axis acceleration sensor 4Acceleration ayVelocity v obtained by integrationyIs compared with a predetermined threshold value vy_th(e.g. 8m/min) at a speed vyIf the absolute value of (a) is large, it is determined that the car 1 is traveling, and the process proceeds to the next step. On the other hand, at a speed vyIf the absolute value of (3) is small, step S1 is repeated.
In step S2, the running state detecting unit 12d detects the speed vyIn the case of deceleration of (3), it is determined that the car 1 approaches the destination floor and starts to decelerate, and the process proceeds to the next step. On the other hand, if deceleration cannot be detected, the process returns to step S1.
In step S3, the car position detection unit 12a detects the landing door 10 of the destination floor. Specifically, the car position detection unit 12a monitors the magnetic density M of the 3-axis magnetic sensor 5zWhen it is less than a predetermined threshold value Mz_thIn the case of (1), it is determined that the 3-axis magnetic sensor 5 attached to the car 1 has reached the end of the landing door 10 of the destination floor (time t in fig. 3 (c))b). On the other hand, at magnetic density MzIf large, step S3 is repeated.
In step S4, the car movement amount measuring unit 12c measures the acceleration a output from the 3-axis acceleration sensor 4yThe amount of movement l of the car 1 after reaching the landing door 10 of the destination floor is measured.
In step S5, the car position detection unit 12a checks the current position of the car 1 (current floor F) by referring to the processing result of fig. 5 (described later) executed in parallel with the processing of fig. 4, and sends the result to the abnormality diagnosis unit 12 e.
In step S6, the car door opening/closing detection unit 12b detects the open/closed state of the car doors 2. Specifically, the car door opening/closing detection section 12b monitors the output of the 3-axis acceleration sensor 4, that is, the magnetic flux density MxWhen it is greater than a predetermined threshold value Mx_thIn the case of (b), it is determined that the 3-axis magnetic sensor 5 attached to the left door panel 2L is away from the right door panel 2R and the car door 2 is in the open state (time t in fig. 3 (d))c) The door opening operation detection signal is sent to the car movement amount measuring unit 12 c. On the other hand, at magnetic density MxIf small, the process returns to step S3. In additionHere, the magnetic flux density M is determined byxThe open/close state of the car door 2 is determined, but the open/close speed of the car door 2 may be determined based on VxThe open/close state of the car door 2 is determined by the change in the detected value.
In step S7, the car movement amount measuring section 12c finishes measuring the movement amount L at the timing when the car door opening/closing detecting section 12b receives the door opening operation detection signal, and transmits the measured movement amount L to the abnormality diagnosing section 12e as the stop position L. In steps S6 and S7, the moving amount L of the car 1 from the detection of the landing door 10 to the start of the opening of the car door 2 is set as the stop position L, but the moving amount L of the car 1 from the detection of the landing door 10 to the stop of the car 1 may be set as the stop position L.
In step S8, the abnormality diagnostic unit 12e checks whether or not the initial value L of the stop position L corresponding to the current floor F obtained in step S5 is registered0At the unregistered initial value L0In the case of (3), in step S9, the stop position L obtained in step S7 is set as the initial value L corresponding to the current floor F0Is stored in the initial value storage section 12 f. On the other hand, the initial value L corresponding to the current floor F is registered0In the case of (3), the process proceeds to step S10.
In step S10, the measured stop position L and the initial value L corresponding to the current floor F stored in the initial value storage unit 12F are stored in the stop error storage unit 12g for each floor0The difference between them, as the landing error delta for the current floor F.
In step S11, the abnormality diagnostic unit 12e detects an abnormality in the landing error δ. Specifically, the abnormality diagnosis unit 12e compares the landing error δ obtained in step S10 with a predetermined threshold δth(for example, 20mm) and, when the stop error δ is large, it is determined that the stop position L of the current floor F is abnormal, and the process proceeds to step S12. On the other hand, when the landing error δ is small, it is determined that there is no abnormality, and the process of fig. 4 is ended.
In step S12, the abnormality diagnostic unit 12e sends a report command to the abnormality reporting unit 12 h. The abnormality reporting unit 12h that has received the report command reports the current floor F where the abnormality has occurred and the stop error δ to the control center 13 as a pair of information. The control center 13, which has received the abnormality report from the diagnostic device 12, communicates with a professional maintenance worker and requests a correction operation for the landing error δ at the floor where the abnormality has occurred.
Next, a detection process of the current floor F of the car 1 by the diagnosis device 12 of the present embodiment will be described with reference to fig. 5. Fig. 5 is a process executed in parallel with fig. 4. Although not shown, when the maintenance person installs the elevator diagnosis system of the present embodiment, the total floor number F of the elevator system is registered using a setting tool not shownmaxAnd an initial stop layer F0。
When the process of fig. 5 is started, first, in step S51, the car position detection unit 12a determines whether the car 1 is traveling. This process is the same as step S1 in fig. 4, and therefore, a repetitive description thereof will be omitted. Then, when the vehicle is traveling, the process proceeds to step S52.
In step S52, the car position detection unit 12a monitors the magnetic flux density M output from the 3-axis magnetic sensor 5zIf it is decreased, that is, if a certain metal is detected, the process proceeds to step S53.
In step S53, the car position detection unit 12a uses the acceleration a output from the 3-axis acceleration sensor 4yThe movement amount l of the car 1 in the y-axis direction during metal detection is measured.
In step S54, the car position detection unit 12a determines whether or not the metal detected in step S52 is the landing door 10. Specifically, the car position detection unit 12a compares the movement amount l obtained in step S53 with a predetermined threshold value lthIn comparison, when the moving amount l is large, it is determined that the metal being detected is the landing door 10. Here, regarding the threshold value lthAny value that can detect the landing door 10 may be set, and for example, the following values may be set so as not to determine other metal equipment in the hoistway as the landing door 10.
Maximum height of other metal equipment in lifting channel < threshold value lth< height of landing door 10/2
In step S55, the car position detecting unit 12a acquires the traveling direction information of the car 1 from the traveling state detecting unit 12d, and if the traveling direction is ascending, the current floor F to which the floor 1 is added is updated in step S56. On the other hand, if the traveling direction is downward, the current floor F is updated to the current floor obtained by subtracting 1 floor in step S57.
As described above, according to the elevator diagnosis system of the present embodiment, it is possible to diagnose an abnormality in the stopping position of the car due to the influence of aging or the like of the elevator system without using the control signal of the control device of the elevator system by using the output signals of the acceleration sensor and the magnetic sensor provided at the car door of the car.
Further, since the use of the magnetic sensor can detect the door opening/closing operation with higher accuracy and can measure the stop position at the time of opening the door, it is possible to diagnose whether or not there is an abnormality in the stop position in the stop state when the user actually gets on or off the elevator.
Description of the symbols
1 car, 2 car door, 2R right door panel, 2L left door panel, 3 door opening and closing device, 3a door rail, 3b door, 3c door driving belt, 3d door pulley, 43-axis acceleration sensor, 53-axis magnetic sensor, 6 winding machine, 7 balance weight, 8 pulley, 9 main rope, 10 landing door, 11 control device, 12 diagnosis device, 12a car position detection portion, 12b car door opening and closing detection portion, 12c car movement amount measurement portion, 12d running state detection portion, 12e abnormality diagnosis portion, 12f initial value storage portion, 12g stop error storage portion, 12h abnormality report portion.
Claims (7)
1. An elevator diagnosis system that diagnoses an elevator system including a car that ascends and descends between a plurality of landings, the elevator diagnosis system comprising:
a landing door detection unit that is provided in a car door of the car and detects a landing door;
an acceleration measuring unit provided at the car door and measuring an acceleration;
a movement amount measuring unit that measures, as a stop position, a movement amount of the car until the car door opens after the landing door detecting unit detects the landing door, after the acceleration measuring unit detects deceleration of the car; and
and an abnormality diagnosis unit that diagnoses a stop abnormality of the car based on the movement amount.
2. An elevator diagnosis system that diagnoses an elevator system including a car that ascends and descends between a plurality of landings, the elevator diagnosis system comprising:
a landing door detection unit that is provided in a car door of the car and detects a landing door;
an acceleration measuring unit provided at the car door and measuring an acceleration;
a movement amount measuring unit that measures, as a stop position, a movement amount of the car until the car stops after the landing door detecting unit detects the landing door, after the acceleration measuring unit detects deceleration of the car; and
and an abnormality diagnosis unit that diagnoses a stop abnormality of the car based on the movement amount.
3. Elevator diagnostic system according to claim 1 or 2,
the elevator diagnosis system is provided with an abnormality reporting part which reports the stop abnormality of the car to a control center or a maintenance person.
4. Elevator diagnostic system according to claim 1 or 2,
the landing door detection unit, the acceleration measurement unit, the movement amount measurement unit, and the abnormality diagnosis unit are each provided in addition to an existing elevator system.
5. Elevator diagnostic system according to claim 1 or 2,
the elevator diagnosis system further includes:
an initial value storage unit that stores, as an initial value, a parking position that is initially measured for each of the plurality of landings; and
and a stop error storage unit that stores, for each of the plurality of landings, a difference between the last measured stop position and the initial value as a stop error.
6. An elevator diagnosis system that diagnoses an elevator system including a car that ascends and descends between a plurality of landings, the elevator diagnosis system comprising:
an acceleration sensor provided at a car door of the car;
a magnetic sensor provided at the car door;
a running state detection unit that detects a running state of the car based on an output signal of the acceleration sensor;
a car movement amount measuring unit that measures a movement amount of the car based on an output signal of the acceleration sensor;
a car position detection unit that detects a current position of the car based on output signals of the acceleration sensor and the magnetic sensor;
a car door opening/closing detection unit that detects an open/closed state of the car door based on an output signal of the acceleration sensor or the magnetic sensor; and
and an abnormality diagnosis unit that measures a stop error of the car based on output signals of the traveling state detection unit, the car movement amount measurement unit, the car position detection unit, and the car door opening/closing detection unit, and diagnoses a stop abnormality when the stop error exceeds a predetermined threshold value.
7. The elevator diagnostic system of claim 6,
the abnormality diagnosis unit sets, as a stop position, a moving amount of the car until the car door opening/closing detection unit detects the opening of the car door after the landing door of the destination floor is detected based on the output signal of the magnetic sensor, and sets, as a stop error, a difference between an initial value and a measured value of the stop position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/029711 WO2020031284A1 (en) | 2018-08-08 | 2018-08-08 | Elevator diagnosis system |
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| CN112384462A CN112384462A (en) | 2021-02-19 |
| CN112384462B true CN112384462B (en) | 2021-12-07 |
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| CN201880095001.5A Active CN112384462B (en) | 2018-08-08 | 2018-08-08 | Elevator diagnosis system |
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| JP (1) | JP6987255B2 (en) |
| CN (1) | CN112384462B (en) |
| WO (1) | WO2020031284A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11767194B2 (en) * | 2019-01-28 | 2023-09-26 | Otis Elevator Company | Elevator car and door motion monitoring |
| JP7284735B2 (en) * | 2020-05-25 | 2023-05-31 | 株式会社日立ビルシステム | ELEVATOR DIAGNOSTIC DEVICE AND ELEVATOR DIAGNOSTIC METHOD |
| CN111703993A (en) * | 2020-06-18 | 2020-09-25 | 猫岐智能科技（上海）有限公司 | Method and system for judging dangerous events in elevator |
| JP7395433B2 (en) * | 2020-06-29 | 2023-12-11 | 株式会社日立ビルシステム | Car position identification device and car position identification method |
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| JPS54146364A (en) * | 1978-05-10 | 1979-11-15 | Hitachi Ltd | Elevator position detecting apparatus |
| JPS5882975A (en) * | 1981-11-12 | 1983-05-18 | 三菱電機株式会社 | Controller for elevator |
| JPS63258381A (en) * | 1987-04-16 | 1988-10-25 | 北原 一孝 | Controller for position of stoppage of elevator |
| JPH0692559A (en) * | 1992-09-17 | 1994-04-05 | Hitachi Building Syst Eng & Service Co Ltd | Abnormality detecting device for elevator |
| JP5023511B2 (en) * | 2006-02-27 | 2012-09-12 | 三菱電機ビルテクノサービス株式会社 | Elevator equipment |
| CN102112388B (en) * | 2008-06-13 | 2014-10-22 | 因温特奥股份公司 | Elevator device, and method for servicing such an elevator device |
| JP2012180132A (en) * | 2009-06-29 | 2012-09-20 | Mitsubishi Electric Corp | Elevator equipment |
| CN101597001B (en) * | 2009-07-03 | 2011-01-05 | 江门市蒙德电气有限公司 | Detection device for detecting level position of elevator |
| CN104860148B (en) * | 2010-06-18 | 2017-07-21 | 株式会社日立制作所 | Elevator device |
| JP5882975B2 (en) * | 2012-12-26 | 2016-03-09 | キヤノン株式会社 | Image processing apparatus, imaging apparatus, image processing method, and recording medium |
| CN104163374A (en) * | 2014-07-31 | 2014-11-26 | 江苏联康电子有限公司 | Lift car movement-preventing device |
| CN105084141A (en) * | 2015-09-18 | 2015-11-25 | 广州日滨科技发展有限公司 | Control method capable of achieving direct stopping of elevator |
| CN106365008B (en) * | 2016-11-03 | 2019-10-25 | 广东卓梅尼技术股份有限公司 | Accidental movement of elevator cage protects automated testing method and test macro |
| CN206985416U (en) * | 2017-06-28 | 2018-02-09 | 山东海浪智能科技有限公司 | One kind sensing Elevator landing detection means |
-
2018
- 2018-08-08 CN CN201880095001.5A patent/CN112384462B/en active Active
- 2018-08-08 JP JP2020535389A patent/JP6987255B2/en active Active
- 2018-08-08 WO PCT/JP2018/029711 patent/WO2020031284A1/en active Application Filing
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| WO2020031284A1 (en) | 2020-02-13 |
| JPWO2020031284A1 (en) | 2021-04-30 |
| CN112384462A (en) | 2021-02-19 |
| JP6987255B2 (en) | 2021-12-22 |
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