JP2011178541A - Control system for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control system for elevators enabling prompt recovery of a car of an elevator in which minor failure occurs. <P>SOLUTION: The control system for the elevators includes: a failure elevator detection means detecting failure levels of the plurality of elevators in a group in case of power outage; and a return elevator determination means returning the car of the elevator in which failure causing no problems for traveling to a preset rescue floor is detected by the failure elevator detection means to the rescue floor by using electric power supplied from an emergency power source. The control system having such a configuration can return the car of the elevator where minor failure occurs to the rescue floor, and promptly recover the car of the elevator where the failure occurs. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator control system.

  In recent elevators, an emergency power supply is provided in case of a power failure. In the event of a power failure, the car is returned to the rescue floor using the power supplied from the emergency power source. Then, it opens on the rescue floor and rescues the users in the car. Here, in the case where a plurality of elevators are provided in the group, the number of operating units is often limited as in the case of one or two elevators in consideration of the capacity of the emergency power supply. Therefore, each elevator is returned to the rescue floor sequentially. In this case, when a specific elevator in the group is out of order due to a failure, it is necessary to prevent other elevators from returning.

  Therefore, a control system has been proposed in which a broken car is driven at a low speed and stopped at the nearest floor, and when the broken car stops at the nearest floor, a return completion signal is issued to drive the next car. According to such a control system, it is possible to avoid interruption of return operation of other elevators in the group (see, for example, Patent Document 1).

JP 56-33374 A

  However, in the thing of patent document 1, even if it is a minor failure which does not have trouble in return driving | running | working or continuous driving | running, it becomes the return driving | running to the nearest floor. That is, the elevator car in which a minor failure has occurred completes the return on the nearest floor even though it can travel to the rescue floor. For this reason, when a minor failure occurs in a plurality of elevators, each car waits with a different nearest floor as a stop floor. In this case, there is a problem that the maintenance staff must move sequentially to a plurality of stop floors where each car has stopped in order to return each car.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an elevator control system capable of quickly returning an elevator car in which a minor failure has occurred. .

  The elevator control system according to the present invention includes a failure machine detection means for detecting a failure level of a plurality of elevators in a group at the time of a power failure, and a failure that does not hinder travel to a rescue floor preset in the failure machine detection means. And an elevator deciding means for returning the elevator car detected by the emergency floor to the rescue floor using electric power supplied from an emergency power source.

  According to the present invention, an elevator car in which a minor failure has occurred can be quickly returned.

1 is an overall configuration diagram of an elevator control system according to Embodiment 1 of the present invention. It is a block diagram of each stand control apparatus utilized for the control system of the elevator in Embodiment 1 of this invention. It is a flowchart for demonstrating operation | movement at the time of the automatic return mode of the control system of the elevator in Embodiment 1 of this invention. It is a flowchart for demonstrating the operation | movement at the time of the manual return mode of the control system of the elevator in Embodiment 1 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is an overall configuration diagram of an elevator control system according to Embodiment 1 of the present invention.
In FIG. 1, reference numeral 1 denotes a plurality of elevators. These elevators 1 are provided in buildings such as high-rise buildings, for example. On each floor of this building, a hall 2 for each elevator 1 is provided. Each elevator 1 is provided with a hoisting machine 3. A main rope 4 is wound around a sheave (not shown) of the hoisting machine 3.

  A car 5 is connected to one end of these main ropes 4. On the other hand, a counterweight 6 is connected to the other end of these main ropes 4. And the hoisting machine 3 is connected to each stand control apparatus 7 corresponding to each elevator 1 via a cable (not shown). Each of these table control devices 7 is connected to the car 5 via a cable (not shown). Each of these table control devices 7 is connected to the group management device 8 via a cable (not shown).

  In the control system of the elevator 1 having such a configuration, the group management device 8 creates common information for all the elevators 1. With the common information, the plurality of elevators 1 are managed as one group.

  Here, in the control system of the elevator 1 in recent years, an emergency power supply 9 is provided in case of a power failure. And the control system of the elevator 1 of this Embodiment performs return operation at the time of a power failure. Specifically, the group management device 8 uses the electric power supplied from the emergency power supply 9 while taking into account the degree of failure of each elevator 1 so as to return the car 5 to the same floor preset as the rescue floor. It has become. Hereinafter, a configuration mainly related to the return operation in the control system of the elevator 1 according to the present embodiment will be specifically described.

  As shown in FIG. 1, a return mode switch 10 is provided in the vicinity of the group management apparatus 8 of the present embodiment. This return mode switch 10 is for switching the operation mode of the elevator 1 at the time of a power failure. On the other hand, the group management device 8 includes return mode determination means 11. The return mode determining means 11 has a function of determining the operation mode of the elevator 1 at the time of a power failure to one of an automatic return mode and a manual return mode based on information from the return mode switch 10.

  Further, the group management device 8 includes an emergency power supply establishment detection unit 12, a failure number detection unit 13, a return completion number detection unit 14, and a return number determination unit 15. The emergency power supply establishment detection means 12 has a function of detecting that the power supply that supplies power to each elevator 1 is switched from the normal power supply to the emergency power supply 9. The emergency power supply establishment detection means 12 has a function of outputting the fact that the emergency power supply 9 is sequentially switched to the recurring operation to each of the control devices 7 in the group.

  The failure machine detection means 13 has a function of determining the degree of failure of each elevator 1 based on a failure signal output from each vehicle control device 7 in the group. Moreover, the failure machine detection means 13 is based on the extent of the failure, the elevator 1 that has not failed, the elevator 1 that has trouble in continuing normal operation but has no trouble in return operation, and the elevator 1 that cannot perform return operation. It has a function to detect and distinguish. Furthermore, the failure machine detection means 13 has a function of outputting a detection result relating to the distinction of the elevator 1 as failure machine information.

  The return completion car detection means 14 distinguishes and detects the elevator 1 whose return has not been completed and the elevator 1 whose return has been completed based on the return completion signal output from each of the control devices 7 in the group at the time of a power failure. It has a function. The return completion machine detecting means 14 has a function of outputting the detection result of return completion as return completion machine information.

  Returning machine determining means 15 includes emergency power establishment establishment detection from emergency power establishment detection means 12, failure machine information from failure machine detection means 13, return completion machine information from return completion machine detection means 14, and a predetermined return order. Based on the information, it has a function of determining the elevator 1 to be returned. Returning machine determining means 15 has a function of sequentially outputting a return command to each determined control device 7 of elevator 1 with the nearest floor or a preset rescue floor as a designated floor. In the present embodiment, the rescue floor is set to the same floor for all of the plurality of elevators 1.

Next, with reference to FIG. 2, each vehicle control device 7 of each elevator 1 will be described in detail.
FIG. 2 is a block diagram of each vehicle control device used in the elevator control system according to Embodiment 1 of the present invention.
As shown in FIG. 2, each vehicle control device 7 that controls the operation of each elevator 1 includes a return operation availability determination means 16, a continuous operation availability determination means 17, a return completion detection means 18, and a manual return detection means 19.

  The return driving availability determination means 16 is unable to drive the elevator 1 when various safety devices (not shown) corresponding to each elevator 1 are operated or when the motor drive system of the hoisting machine 3 is broken. It has a function of determining whether or not. In addition, when it is impossible to run the elevator 1, the return driving availability determination means 16 gives a failure signal indicating that the elevator 1 cannot perform the returning operation to the failure machine detection means 13 of the group management device 8. It has a function to output.

  The continuous operation permission / non-permission determining means 17 is capable of causing the elevator 1 to travel, such as an abnormality in the power supply for equipment in the hall 2 and the car 5 and an abnormality in the transmission system, but a failure that cannot continue normal operation occurs. It has a function to determine whether or not. Further, when the failure detection unit 17 detects the failure, the failure unit detection unit 13 of the group management device 8 uses the elevator 1 that does not interfere with the return operation but has a problem in continuing normal operation. It has a function of outputting a failure signal indicating that there is.

  The return completion detection means 18 has a function of detecting the completion of return when the car 5 arrives at the designated floor based on the return instruction output from the return machine determination means 15 of the group management device 8 and the door is opened. The return completion detecting means 18 has a function of outputting a return completion signal to the return completion number detecting means 14 of the group management device 8. The manual return detection unit 19 has a function of performing a manual return operation based on operation information from the manual return switch 20 when the manual return mode is set by the return mode determination unit 11 of the group management device 8.

Next, the operation of the control system of the elevator 1 when a power failure occurs when the automatic return mode is set will be described with reference to FIG.
FIG. 3 is a flowchart for illustrating the operation in the automatic return mode of the elevator control system according to the first embodiment of the present invention.
First, in step S1, when a power failure occurs and the emergency power supply 9 is established, the emergency power supply establishment detection means 12 of the group management apparatus 8 detects the establishment of the emergency power supply 9. By such detection, each elevator 1 in the group sequentially shifts to a return operation by the emergency power source 9.

  In this case, the group management device 8 outputs a stop command to each of the vehicle control devices 7. Each vehicle control device 7 to which such a stop command is input causes the car 5 to stop urgently. Thereafter, the return machine determining means 15 of the group management device 8 determines the elevator 1 to be returned, and sequentially outputs a return command to each of the vehicle control devices 7. Hereinafter, the operation of each of the vehicle control devices 7 will be described after step S2.

  In step S <b> 2, each of the vehicle control devices 7 determines whether there is a return command from the return number determination unit 15 of the group management device 8. When there is no return command, the process proceeds to step S3, and each of the vehicle control devices 7 causes the car 5 to wait at the emergency stop position. On the other hand, if there is a return command, the process proceeds to step S4.

  In step S4, the return operation availability determination means 16 of each vehicle control device 7 determines whether or not the elevator 1 is capable of return operation. If return driving is not possible, the process proceeds to step S5. In step S5, each vehicle control device 7 returns the car 5 to the nearest floor from the emergency stop position. When the door opening is completed on the nearest floor, the return completion detection means 18 of each of the vehicle control devices 7 outputs a return completion signal to the return completion machine detection means 14 of the group management device 8, and the operation ends.

  On the other hand, if return driving is possible in step S4, the process proceeds to step S6. In step S6, the continuous operation availability determination means 17 of each of the vehicle control devices 7 determines whether or not a failure has occurred in which the elevator 1 can travel but cannot continue normal operation. However, in the automatic return mode, regardless of whether it is impossible to continue the normal operation, each vehicle control device 7 performs the return operation and returns the car 5 to the rescue floor. Thereafter, when the door is completely opened on the rescue floor in step S7, the return completion detection means 18 of each vehicle control device 7 outputs a return completion signal to the return completion machine detection means 14 of the group management device 8, and the operation ends. .

  After the return operation in the automatic return mode, the return number determination unit 15 of the group management device 8 functions as a continuous number detection unit and a continuous number determination unit. That is, the return machine determining means 15 of the group management device 8 detects the elevator 1 that has not failed from the determination results of the return operation availability determining means 16 and the continuous operation availability determining means 17 of each vehicle control device 7.

  Then, the return machine determining means 15 of the group management device 8 outputs a command to continue the normal operation to each of the control devices 7 of the elevators 1 that are selected from the elevators 1 that are not in failure. Each vehicle control device 7 to which such a command is input can continue normal operation of the elevator 1. By continuing such normal operation, the user can move between the floors of the building using any of the elevators 1 even during a power failure.

Next, the operation of the control system of the elevator 1 when a power failure occurs when the manual return mode is set will be described with reference to FIG.
FIG. 4 is a flowchart for explaining the operation in the manual return mode of the elevator control system according to the first embodiment of the present invention.

  In the manual return mode, the operations up to step S5 are the same as the operations in the automatic return mode. However, in the manual return mode, the return operation after step S5 is different from the operation in the automatic return mode. Hereinafter, the operation after step S5 peculiar to the manual return mode will be described.

  In the manual return mode, if the return operation is possible in step S4, the process proceeds to step S11. In step S11, the continuous operation availability determination means 17 of each of the vehicle control devices 7 determines whether or not a failure has occurred in which the elevator 1 can travel but cannot continue normal operation. In the manual return mode, the content of the return operation performed in step S11 differs from the output content of the return completion signal in step S12 depending on whether or not the normal operation cannot be continued. ing.

  Specifically, when the elevator 1 can travel and can continue normal operation, such as when no failure is detected in the elevator 1, each vehicle control device 7 performs the return operation in step S11. Carry the car 5 to the rescue floor. Thereafter, when the door opening is completed on the rescue floor in step S12, the return completion detecting means 18 of each of the vehicle control devices 7 outputs a return completion signal to the return completion machine detecting means 14 of the group management device 8.

  On the other hand, when the elevator 1 can travel but cannot continue the normal operation, in step S11, each of the vehicle control devices 7 performs the return operation and brings the car 5 to the nearest floor. Let it run. Thereafter, when the door is completely opened at the nearest floor in step S12, the return completion detection means 18 of each of the control devices 7 outputs a return completion signal to the return completion machine detection means 14 of the group management device 8.

  After the above steps S11 and S12, the process proceeds to step S13, where the return completion car detection means 14 of the group management device 8 determines whether the elevator 1 (normal car) in which no failure has been detected has completed the return of all cars. judge. When the elevator 1 in which no failure is detected has been returned to all units, the process proceeds to step S14. In step S <b> 14, the return mode determination means 11 of the group management device 8 determines whether or not the manual return mode is set by the return mode switch 10.

  And if manual return mode is set, it will progress to Step S15. In step S15, the elevator 1 in which a failure that allows the vehicle to run but cannot continue normal operation has occurred, that is, each vehicle controller 7 of the car that has returned to the nearest floor, clears the detection of completion of return. To do. Thereafter, the return machine determination means 15 of the group management device 8 outputs the return command to the respective vehicle control devices 7 again, and proceeds to step S16.

  In step S <b> 16, the manual return detection unit 19 of each of the vehicle control devices 7 determines whether or not the manual return switch 20 is turned on by an operation of an administrator or the like. Then, when the manual return switch 20 is turned on, the process proceeds to step S17. In step S17, the manual return detection means 19 of each of the vehicle control devices 7 performs a return operation, returns the car 5 to the rescue floor, and the operation ends.

  Even after the return operation in the manual return mode is completed, the return number determination unit 15 of the group management device 8 functions as a continuous number detection unit and a continuous number determination unit. That is, the return number determination means 15 of the group management device 8 outputs a command to continue the normal operation to each of the vehicle control devices 7 of the elevators 1 that are selected from the elevators 1 that are not in failure. Each vehicle control device 7 to which such a command is input can continue normal operation of the elevator 1. By continuing such normal operation, the user can move between the floors of the building using any of the elevators 1 even during a power failure.

  According to the first embodiment described above, the car 5 of the elevator 1 in which a failure that does not hinder the traveling to the rescue floor is detected at the time of a power outage is sent to the rescue floor using the power supplied from the emergency power supply 9. Come back.

  Here, the rescue floor is set to the same floor for all of the plurality of elevators 1. For this reason, the car 5 of the elevator 1 in which a minor failure has occurred at the time of a power failure returns to the same rescue floor. Therefore, when a minor failure occurs in the plurality of elevators 1, the maintenance staff can quickly return the cars 5 of the plurality of elevators 1 that have failed on the rescue floor set on the same floor. Thereby, the maintainability of the elevator 1 at the time of a power failure can be improved.

  Further, in the manual return mode, after the car 5 of the elevator 1 in which no failure has been detected travels to the rescue floor, the car 5 of the elevator 1 in which a malfunction that does not hinder the travel to the rescue floor is detected is the rescue floor. Run until. For this reason, the return operation is performed first from the normal elevator 1 that can return to the rescue floor more quickly and reliably, and the entire return operation can be speeded up.

  Furthermore, after the elevator 5 car 5 in which a failure that does not hinder the traveling to the rescue floor has been detected travels to the rescue floor, the elevator 1 that has not been detected to have a failure is selected by limiting the number. The normal operation is continued using the power supplied from the emergency power source 9. For this reason, it is possible to continue the normal operation of the elevator 1 even during a power failure while taking into account the capacity of the emergency power supply 9.

  In addition, in the manual return mode, each vehicle control device 7 rescues the car 5 according to the state of the manual return switch 20 when the corresponding elevator 1 has detected a failure that does not hinder the traveling to the rescue floor. Return to the floor. For this reason, when a minor failure occurs in the plurality of elevators 1, priority can be given to the car 5 to be returned to the rescue floor, and a flexible rescue operation can be performed.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Platform 3 Hoisting machine 4 Main rope 5 Car 6 Balance weight 7 Each unit control device 8 Group management device 9 Emergency power supply 10 Return mode switch 11 Return mode determination means 12 Emergency power supply establishment detection means 13 Failure number machine detection means 14 Return completion machine detection means 15 Return machine determination means 16 Return operation availability determination means 17 Continuous operation availability determination means 18 Return completion detection means 19 Manual return detection means 20 Manual return switch

Claims (5)

Failure machine detection means for detecting the failure level of a plurality of elevators in the group at the time of a power failure,
Returning machine determining means for returning to the rescue floor an elevator car that has been detected to have a failure that does not hinder traveling to the rescue floor that is set in advance in the failed car detecting means, using electric power supplied from an emergency power supply; ,
An elevator control system comprising:   2. The elevator control system according to claim 1, wherein the return machine determining means sets the rescue floor to the same floor for all of the plurality of elevators.   The return car deciding means is configured to move the elevator car whose failure is not detected by the failure car detecting means to the rescue floor and then detect an elevator car that has been detected as having no trouble in traveling to the rescue floor. 3. The elevator control system according to claim 1, wherein the elevator travels to the rescue floor. 4. After the return car determining means travels the elevator car that has been detected to have a failure that does not hinder the traveling to the rescue floor to the rescue floor, from among the elevators that have not been detected by the trouble machine detection means Continued machine determination means for continuing normal operation using the electric power supplied from the emergency power source to the elevator selected by limiting the number of units,
The elevator control system according to claim 3, further comprising: A return switch provided in each of the plurality of elevators,
Each of the plurality of elevators, each of which returns a car to the rescue floor according to the state of the return switch when a corresponding elevator has detected a failure that does not interfere with traveling to the rescue floor. A control device;
The elevator control system according to any one of claims 1 to 4, further comprising:

Images