CN113120710A

CN113120710A - Elevator control system and elevator control method

Info

Publication number: CN113120710A
Application number: CN202011478157.7A
Authority: CN
Inventors: 竹山和德
Original assignee: Toshiba Elevator Co Ltd
Current assignee: Toshiba Elevator and Building Systems Corp
Priority date: 2020-01-15
Filing date: 2020-12-15
Publication date: 2021-07-16
Anticipated expiration: 2040-12-15
Also published as: CN113120710B; JP2021109765A; JP6855605B1

Abstract

An elevator control system is provided which can temporarily resume operation of an elevator car stopped by an earthquake early and suppress a decrease in convenience. The elevator control system is provided with: a setting unit which presets a floor for detecting abnormal opening and closing of the elevator door stopped by an earthquake; a diagnostic unit for performing self-diagnosis; a registration unit for registering the floor on which the door opening/closing abnormality is detected as a non-stop floor; a temporary recovery operation unit which resumes operation of the elevator by setting a floor on which no abnormality in opening and closing of the door is detected as usable; and a notification unit that notifies that the floor registered in the registration unit as a non-stop floor and the floor not set in the setting unit are unusable; self-diagnosis is performed for floors above and below the floor where the door opening/closing abnormality is detected.

Description

Elevator control system and elevator control method

Technical Field

The present invention relates to an elevator control system and an elevator control method for temporarily restoring an elevator stopped due to an earthquake.

Background

Conventionally, brake diagnosis, diagnosis of an elevator path for low-speed travel, diagnosis of opening and closing of doors on floors, and the like have been performed as automatic recovery operation after control operation in an earthquake until safety is checked by a maintenance worker during a stoppage in an earthquake. If there is no special abnormality, the operation of the elevator is temporarily resumed and restarted, thereby ensuring user convenience until the elevator is completely resumed (returned to normal operation).

For example, there is a conventional technique in which, when an abnormality in opening and closing of a door of a car in operation is diagnosed upon detection of an earthquake, the opening and closing speed of the door is decelerated and then temporarily returned to a normal state. Further, there is also known a technique of limiting the operation of the elevator to a part of the full elevating stroke so as to be able to restart early.

Disclosure of Invention

However, conventionally, since the abnormality in opening and closing of the door is detected by stopping the car at each floor and actually opening and closing the door, a long time is required from the suspension of the operation to the temporary restoration.

In addition, conventionally, the diagnostic operation performed after the controlled operation at the time of earthquake is limited to a part of floors, but since the diagnostic operation is performed for all floors in the section where the diagnostic operation is performed, a certain amount of time is required until the temporary recovery.

The invention aims to provide an elevator control system and an elevator control method, which can temporarily recover the operation of a stopped elevator car as soon as possible and inhibit the reduction of the convenience of users for the elevator stopped due to an earthquake.

The elevator control system according to the present invention includes a setting unit and a diagnosis unit. The setting unit sets in advance a floor on which self-diagnosis is performed for detecting a door opening/closing abnormality of the elevator during stoppage due to an earthquake. The diagnosis unit performs the self-diagnosis after the occurrence of the earthquake by using the floor set in the setting unit as a diagnosis target. The registration unit registers the floor on which the abnormality in opening and closing of the door is detected as a non-stop floor as a result of the self-diagnosis performed by the diagnosis unit. The temporary recovery operation unit resets the floor where the abnormality in opening and closing of the door is not detected as a result of the self-diagnosis performed by the diagnosis unit, as a stop floor available to a user, and restarts the operation of the elevator. The notification unit notifies the user that the floor registered in the registration unit as a non-stop floor and the floor not set in the setting unit are not available. The elevator control system according to an embodiment performs the self-diagnosis for floors above and below the floor where the door opening/closing abnormality is detected as a result of the self-diagnosis performed by the diagnosis unit.

In the elevator control method according to the embodiment, the elevator stopped due to the earthquake is temporarily recovered by the elevator control system. According to the above configuration, the operation of the elevator stopped by the earthquake can be temporarily resumed as soon as possible, and the deterioration of the user's convenience can be suppressed.

Drawings

Fig. 1 is a conceptual diagram of an elevator system to which an elevator control system according to embodiment 1 is applied.

Fig. 2 is a flowchart illustrating an operation of the elevator system according to embodiment 1.

Fig. 3 is a conceptual diagram illustrating an operation of the elevator system according to embodiment 1.

Fig. 4 is a conceptual diagram of the elevator system according to embodiment 2.

Fig. 5 is a conceptual diagram of the elevator system according to embodiment 3.

Fig. 6 is a flowchart illustrating an operation of the elevator system according to embodiment 3.

Fig. 7 is a conceptual diagram illustrating an operation of the elevator system according to embodiment 4.

Detailed Description

Hereinafter, the method and apparatus according to the embodiment will be described with reference to the drawings.

< embodiment 1 >

Fig. 1 is a conceptual diagram showing a configuration example of an elevator system (elevator control system) 20 according to embodiment 1 of the present invention, fig. 1A shows an overall system diagram, fig. 1B shows an in-car operating device, and fig. 1C shows a passenger-place operating device. In addition, the following description will exemplify 1 elevator of a 5-story building (building) installed on the ground.

In fig. 1A, an elevator system 20 includes a car 1, a counterweight 2, a rope 3, a hoist 4, a brake 5 provided in the hoist 4, a tail rope 6, an elevator control device 7, and the like. The elevator system 20 further includes a P-wave (seismic wave) sensor 8 as a first seismic sensor, a low-Gamma (GAL) (seismic) sensor 9 as a second seismic sensor, and a high-gamma (seismic) sensor 10 as a third seismic sensor.

The car 1 and the counterweight 2 are suspended from one end and the other end of a rope 3 in a bucket type, respectively, and the rope 3 is suspended on a hoist 4 disposed in a machine room above an elevator shaft (not shown).

The car 1 moves up and down along the elevator shaft between the seats 31 of floors each composed of, for example, 1 floor (1F), 2 floors (2F), 3 floors (3F), 4 floors (4F), and 5 floors (5F) as the uppermost floors. The car 1 is provided with a camera (monitoring camera) for monitoring the inside of the car (not shown), a pyroelectric sensor (not shown) for detecting a human body, a door opening/closing device (not shown), a car door, an inside operation device (notification unit) 22, and the like.

The P-wave sensor 8, the low-gamma sensor 9, and the high-gamma sensor 10 are disposed in the elevator shaft of the car 1, for example, and are connected to the elevator control device 7 via a tail rope or the like.

The P-wave sensor 8 operates when it senses the sway exceeding the first reference value, and outputs a signal to the earthquake time control operation control unit 11 of the elevator control device 7.

The low gamma sensor 9 operates when it senses a shake exceeding a second reference value larger than the first reference value, and outputs a signal to the earthquake time control operation control unit 11 of the elevator control device 7.

The gaging sensor 10 operates when it senses a shake exceeding a third reference value larger than the second reference value, and outputs a signal to the earthquake time control operation control unit 11 of the elevator control device 7.

The P-wave sensor 8, the low gamma sensor 9, and the high gamma sensor 10 are electrically reset if they receive a reset signal from the elevator control device 7.

Here, the elevator control device 7 includes an earthquake-time controlled operation control unit 11 that is activated when any one of the P-wave sensor 8, the low-gamma sensor 9, and the high-gamma sensor 10 is operated, an earthquake-time automatic diagnosis operation control unit (diagnosis unit) 12 that is activated when the low-gamma sensor 9 is operated, and an earthquake-time temporary recovery operation control unit (temporary recovery operation unit) 13 that performs an earthquake-time temporary recovery operation.

The earthquake-time automatic diagnosis operation control unit 12 includes a brake diagnosis unit 14, a low-speed operation diagnosis unit 15, a high-speed (rated-speed) operation diagnosis unit 16, a door opening/closing operation control unit (setting unit) 17, a door abnormality diagnosis unit 18, and a door abnormality floor registration unit (registration unit) 19.

In the present embodiment, the floor on which the self-diagnosis is performed is configured such that, for example, the door abnormality diagnosis unit 18 performs a predetermined self-diagnosis (door abnormality diagnosis) for a floor set in advance by the door opening/closing operation control unit 17. The settable floors include, for example, a reference floor (not limited to 1F) serving as a reference for the operation of raising and lowering the car 1, an uppermost floor, an odd-numbered floor, an even-numbered floor, and the like. In addition, a floor having a large number of users and a large number of door opening/closing operations, which is obtained from the maintenance data, or a specific priority floor to be treated with priority, such as an important floor, may be set as the floor to be diagnosed.

For example, the report control unit 32 is connected to the earthquake-time temporary return operation control unit 13, and the report control unit 32 controls the passenger-seat operation device (report unit) 21 and the car-interior operation device 22 when the earthquake-time temporary return operation is performed.

Each of the seats 31 is provided with a hall door (not shown), a seat operating device 21, a notification lamp (not shown), and the like.

The hall operating device 21 is a device that is operated by the user when the user uses the elevator at the hall 31 on each floor, and includes a display (hall indicator), a car call button, and the like.

In the case of temporarily resuming the operation at the time of an earthquake, for example, as shown in fig. 1C, a guidance (message) such as "no use for floors 2 and 4", a predetermined mark, and the like are displayed on the display unit of the passenger operation device 21 by the report control unit 32 in order to report the self-diagnosis result (no stop of floors) and the floors other than the diagnosis target.

The in-car operation device 22 is a device that is installed in the car 1 and operated by a user who gets into the car 1, and includes a destination floor button 23, an audio broadcasting device 24, a door opening/closing button, and the like.

In the case of temporarily resuming the operation at the time of an earthquake, for example, as shown in fig. 1B, a guidance (voice message) such as "layer 2, layer 4 is unavailable" is broadcast from the voice broadcasting device 24 of the in-car operation device 22 via the report control unit 32 in order to report the self-diagnosis result (without stopping the floor) and the floor outside the diagnosis target. At the same time, the destination floor button 23 of the in-car operation device 22 is turned on (turned on) and turned off in accordance with the guidance "floor 2 and floor 4 are not available", whereby the available floors (floors 1, 3, and 5) and the unavailable floors (floors 2 and floor 4) can be reported.

Next, the operation of the elevator system 20 shown in fig. 1 will be described.

Fig. 2 is a flowchart showing the operation of the elevator system 20 according to the present embodiment.

In the elevator system 20, the operation of the P-wave sensor 8, the low gamma sensor 9, and the high gamma sensor 10 is continuously monitored by the control operation control unit 11 during an earthquake, for example (steps S1, S3, and S4).

If the P-wave sensor 8 is not operated as a result of the monitoring (NO in step S1), the normal operation is continued (step S2).

When the P-wave sensor 8 is operated (yes at step S1) and the low gamma sensor 9 is not operated (no at step S3), it is determined that the vibration is slight, and the operation is automatically returned to the normal operation after waiting for a certain time until the vibration of the rope 3 and the like converges (step S5).

When the P-wave sensor 8 is operated and the low gamma sensor 9 is operated (yes in step S3), and when the high gamma sensor 10 is further operated (yes in step S4), the operation is stopped because of a very large fluctuation (step S6), and after a point inspection by a maintenance worker (step S20), the operation is returned to the normal operation (step S21).

When the P-wave sensor 8 is operated and the lower gamma sensor 9 is operated, and when the upper gamma sensor 10 is not operated (no in step S4), the earthquake-related automatic diagnosis operation control unit 12 starts a predetermined automatic diagnosis operation (step S7).

That is, the brake diagnosis unit 14 checks whether or not there is an abnormality in the brake 5 of the car 1 that is stopped at the nearest floor (step S8), and if an abnormality in the brake 5 is detected (no at step S9), the operation is suspended (step S10), and the process proceeds to step S20.

If the brake 5 is not detected and is determined to be normal (yes in step S9), the low-speed operation diagnosis section 15 performs a low-speed operation diagnosis for running the car 1 on the ascending/descending road at a low speed (step S11).

When it is determined that there is an abnormality in the ascending/descending path, such as a jam in the rope 3 in the ascending/descending path or derailment of the counterweight 2, by the low-speed operation diagnosis (no in step S12), the operation is stopped (step S13), and the process proceeds to step S20.

If it is determined in the low speed operation diagnosis that there is no abnormality in the ascending/descending road (yes in step S12), the high speed operation diagnosis section 16 further performs high speed operation diagnosis for reciprocating the car 1 in the ascending/descending road at high speed operation (step S14).

When it is determined from these diagnosis results that the up-and-down operation of the car 1 is possible, the door opening/closing operation control unit 17 performs a door opening/closing diagnosis for the floor set as the target floor for the door abnormality diagnosis (step S15).

If the door abnormality diagnostic unit 18 determines that the results of all the door opening/closing diagnoses of the floors to be subjected to the door abnormality diagnosis are normal (yes in step S16), the earthquake temporary resumption operation control unit 13 starts the temporary resumption operation for all the floors to be subjected to the door abnormality diagnosis (step S17).

That is, as shown in fig. 3, for example, when the door abnormality diagnosis unit 18 has set 1 floor (reference floor), 3 floors (odd floors), and 5 floors (uppermost floor), and when no abnormality is confirmed in the door opening/closing diagnosis of 1 floor, 3 floors, and 5 floors, the temporary return operation for setting 1 floor, 3 floors, and 5 floors as the stop floors (available floors) is started.

At this time, the report control unit 32 reports to the user via the passenger operation device 21 and the in-car operation device 22 that the floor not set by the door opening/closing operation control unit 17, that is, that the 2 th floor and the 4 th floor to be subjected to the door abnormality diagnosis are not available.

In this case, the users at floors 2 and 4, although having some inconvenience, need only go up and down the stairs of 1 floor, and can use the elevator system 20 earlier.

On the other hand, when it is determined that there is an abnormality in the result of the door opening/closing diagnosis of the specific floor ("no" at step S16), the floor is registered as a non-stop floor in the door abnormal floor registration unit 19 (step S18). Further, floors other than the floors to be diagnosed for the door abnormality may be registered as non-stop floors.

Then, the temporary return operation by the earthquake temporary return operation control unit 13 is started for the stop floors other than the floor where the stop floor is not located (step S19).

For example, when the floor 1, the floor 3, and the floor 5 are set as targets of the door abnormality diagnosis, and when the door abnormality diagnosis unit 18 confirms an abnormality in the door opening/closing diagnosis for the floor 3, the temporary return operation is started with the floor 3 set as the non-stop floor and the floor 1 and the floor 5 set as the stop floors.

At this time, based on the setting of the door opening/closing operation control unit 17 and the result of the door abnormality diagnosis, the report control unit 32 reports the unavailability of the 2 th floor, the 3 rd floor, and the 4 th floor to the user via the passenger operation device 21 and the in-car operation device 22.

Then, if safety is confirmed by a point inspection by a maintenance person (step S20), the operation returns to the normal operation in which all floors from 1 to 5 floors are stopped (step S21).

In this way, the elevator system 20 is returned to the normal operation by performing a check by a maintenance worker, including a case where the operation is stopped in the brake diagnosis and the low-speed operation diagnosis.

In the present embodiment, the floor on which the door opening/closing diagnosis (door abnormality diagnosis) that requires the most time for the self-diagnosis for the automatic recovery is performed is limited.

That is, in the automatic recovery operation performed after the occurrence of an earthquake, after the brake diagnosis, the low-speed operation diagnosis, and the high-speed operation diagnosis are performed, the door opening/closing diagnosis is performed only on the floor set in advance. This can shorten the diagnosis time of the door opening/closing diagnosis that takes the most time in the automatic recovery operation. Therefore, the temporary recovery operation can be started earlier, and as a result, although all layers cannot be used, it is possible to significantly suppress the deterioration of the convenience of the user, compared to a case where the suspension state is simply set regardless of the result of the self-diagnosis.

In particular, by further limiting the floors on which door opening/closing diagnosis is performed in the priority diagnosis section in which diagnosis operation is performed, the time until the start of the temporary return operation can be reliably shortened as compared with the case where the diagnosis is performed for all the floors in the priority diagnosis section.

Further, since the layer that is not available and the layer that is available are reported to the user, even if the layer is not available, which layer is available is clear, and the convenience of the user can be significantly improved.

< embodiment 2 >

Next, an elevator system according to embodiment 2 of the present invention will be described. The same or similar reference numerals are assigned to the same portions as those in embodiment 1, and detailed description thereof is omitted. In addition, a part of the drawings is simplified for convenience.

Fig. 4 is a conceptual diagram illustrating a configuration example of an elevator system 20 according to embodiment 2 of the present invention.

As shown in fig. 4, the elevator system 20 further includes an elevator monitoring device 25 and a monitoring center (communication unit) 26.

The monitoring center 26 is configured to be able to read floor data of a non-stop floor registered in the door abnormal floor registration unit 19 via the elevator monitoring device 25 in response to the start of the temporary return operation, and to transmit the read floor data to the portable terminal 27 carried by the maintenance person.

With this configuration, the maintenance worker who goes out from the monitoring center 26 can confirm the door abnormality diagnosis in any area as long as the maintenance worker can communicate the result of the door abnormality diagnosis.

< embodiment 3 >

Next, an elevator system according to embodiment 3 of the present invention will be described. The same or similar reference numerals are given to the same portions as those in embodiment 2, and detailed description thereof is omitted.

Fig. 5 is a conceptual diagram illustrating a configuration example of the elevator system 20 according to embodiment 3 of the present invention, and fig. 6 is a flowchart illustrating an operation of the elevator system 20 according to this embodiment.

The elevator system 20 shown in fig. 5 is an example in which the elevator monitoring device 28 includes the temporary resumption operation selecting unit 29.

That is, the basic operation of the elevator system 20 is the same as that in the case of embodiment 1, but when there is registration of a non-stop floor due to the door abnormality diagnosis (step S18 in fig. 6), it is possible to select whether or not to perform the temporary return operation for a stop floor other than the non-stop floor.

As shown in fig. 6, for example, when the temporary resumption operation selecting unit 29 selects the execution of the temporary resumption operation for floors other than the non-stopped floor (yes in step S22), the temporary resumption operation is executed for floors other than the non-stopped floor in step S19.

On the other hand, when the operation suspension is selected by the temporary resumption operation selector 29 (no in step S22), the operation is suspended including floors other than the non-stop floor (step S23).

In this way, even when there is a floor diagnosed as a door opening/closing abnormality in the door abnormality diagnosis, whether or not to perform the temporary return operation can be selected.

< embodiment 4 >

Next, embodiment 4 of the present invention will be described with reference to fig. 7.

Here, a case will be described in which the floor 1 (reference floor), the floor 3 (odd floor), the floor 5 (odd floor), the floor 7 (odd floor), and the floor 9 (uppermost floor) of the building including the floor 1 (B1F) and the floor 9 are set in advance as the objects of self-diagnosis in the door opening/closing operation control unit 17.

If the door abnormality diagnosis unit 18 confirms an abnormality (x) in the door opening/closing diagnosis of the 5 th floor, for example, the 5 th floor is registered as the non-stop floor in the door abnormality floor registration unit 19. In this case, for example, in the case of embodiment 1 described above, as shown in fig. 7 (a), the temporary recovery operation is started with each of the layers 1, 3, 7, and 9 as the stop layer.

In the present embodiment, when the floor (non-stop floor) diagnosed as the door opening/closing abnormality in the door abnormality diagnosis is confirmed, the door abnormality diagnosis is additionally performed for the floors (4 floors and 6 floors) above and below the non-stop floor (5 floors), for example.

Then, for example, as shown in fig. 7 (b), a temporary return operation can be performed with each floor of 1, 3, 4, 6, 7, and 9 as a stop floor. Therefore, when the seat 31 of 5 floors cannot be used, the user can use the seat 31 of 4 floors or 6 floors only by going up and down the stairs of 1 floor.

Further, the number of floors of a building in which the elevator is installed is not limited, but the effect of the early temporary return operation becomes more remarkable as the number of floors increases.

Further, the number of elevators installed in the building is also not limited, and for example, 1 of the plurality of elevators can perform a temporary return operation according to an actual usage situation, such as 1 of the plurality of elevators having an odd-numbered floor as a stop floor, and the other 1 of the plurality of elevators having an even-numbered floor as a stop floor.

Several embodiments of the present invention have been described above, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments may be implemented in other various forms, and various omissions, substitutions, and changes may be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims

1. An elevator control system for restarting operation of an elevator,

the disclosed device is provided with:

a setting unit for presetting a floor on which self-diagnosis is performed for detecting abnormal door opening/closing of the elevator during stoppage due to an earthquake;

a diagnosis unit for performing the self-diagnosis with the floor set in the setting unit as a diagnosis target after the occurrence of the earthquake;

a registration unit that registers, as a non-stop floor, the floor on which the abnormality in opening and closing of the door is detected as a result of the self-diagnosis performed by the diagnosis unit;

a temporary recovery operation unit that restarts the operation of the elevator by setting the floor on which the abnormality in opening and closing of the door is not detected as a stop floor available to a user as a result of the self-diagnosis performed by the diagnosis unit; and

a notification unit that notifies the user that the floor registered in the registration unit as a non-stop floor and the floor not set in the setting unit are not available;

the self-diagnosis is performed for floors above and below the floor where the door opening/closing abnormality is detected as a result of the self-diagnosis performed by the diagnosis unit.

2. The elevator control system of claim 1,

in order to sense the occurrence of the earthquake, the earthquake sensor is provided with:

a first earthquake sensor which acts when sensing shaking exceeding a first reference value;

a second earthquake sensor that operates when sensing a shake exceeding a second reference value larger than the first reference value; and

a third earthquake sensor which operates when sensing a shake exceeding a third reference value larger than the second reference value;

the diagnosis unit performs a brake diagnosis of the car at a nearest floor stop, an elevator car at a low speed operation, and a high speed operation diagnosis at a rated speed operation as the self-diagnosis after a predetermined period from the occurrence of the earthquake to the start and stop of the operation when the second earthquake sensor is operated and the third earthquake sensor is not operated, and then performs a door opening/closing diagnosis for detecting the door opening/closing abnormality.

3. The elevator control system of claim 1,

the setting unit sets any one of a reference floor and an uppermost floor, which are references when the car is moved up and down, and a floor having a large number of users and a large number of door opening/closing operations, a specific priority floor, an odd-numbered floor, or an even-numbered floor as the floor to which the self-diagnosis is to be performed.

4. The elevator control system of claim 1,

the notification unit may direct the user to the stop layer or the non-stop layer by any one of display of a message or a mark, blinking or lighting of a target layer button, and sound.

5. The elevator control system of claim 1,

the temporary recovery operation unit may select whether to restart or not restart the operation of the elevator for the floor where the door opening/closing abnormality is not detected.

6. The elevator control system of claim 1,

the elevator system further comprises a communication unit for notifying the floor detected as the abnormal opening/closing of the door, which is registered in the registration unit as the non-stop floor, to the outside.

7. A method for controlling an elevator, characterized in that,

the elevator control system according to any one of claims 1 to 6, wherein the elevator stopped due to the occurrence of the earthquake is temporarily recovered.