JP2002029670A - Control device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for an elevator for restoring the opening and closing operation of the door of an elevator car just before a service interruption at the time of restoration from the service interruption. SOLUTION: This control device for elevator 3 for controlling the opening and closing the door 2 of the elevator car comprises a door drive unit 4 for opening and closing the door 2 and an announcement device 5 arranged within the car to announce the opening and closing operation of the door. This device further comprises a door control part 31 for storing the opening and closing state of the door in a prescribed period and outputting a door opening and closing instruction on the basis of the opening and closing state of the door stored just before an interruption of power supply when the power supply is ON again after the interruption of power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device for restoring an open / closed state of an elevator car door immediately before a power failure when the power is restored after a power failure.

[0002]

2. Description of the Related Art In many cases, conventional elevator car doors always close and wait for safety when the elevator is not used. If the car door is open when the power is turned on, the door closes immediately for safety. Therefore, if a power failure occurs while the door is open during elevator operation,
Some elevator car doors automatically close when power is restored after a power failure.

[0003]

In the conventional elevator control apparatus as described above, in particular, when the elevator carrying passengers arrives at the destination floor and the door is opened, the power is momentarily cut off and the power is restored. When a phenomenon called instantaneous blackout occurs,
There is a risk that a passenger who tries to get off the car near the door may collide with or be caught in the door because the door that is being opened suddenly closes when the power returns. Further, in such a case, there is a method of operating the door open button in order to avoid being caught, but there is a problem that the door cannot be operated immediately.

[0004] In addition, when a fire occurs in a building, an emergency elevator used for fire fighting of a fire fighter has a fire fighting operation mode that is a dedicated operation mode for fire fighting during a fire. In this mode, when the fireman arrives at the destination floor for fire fighting in a car, the fireman is required to wait on the door open until the fire fighter finishes the fire fighting and returns to the elevator. If a power failure occurs and power is restored while the door is open, the door may be closed without control during the power failure, and the returned firefighter may not be able to get into the elevator.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an elevator control device for restoring the open / closed state of an elevator car door immediately before a power failure when power is restored after a power failure. .

[0006]

An elevator control device according to the present invention includes a door drive device for opening and closing a door of an elevator car, wherein the elevator control device outputs a command to open and close the door. A door control unit that stores the open / close state of the door and outputs a door open / close command based on the open / close state of the door stored immediately before the power is turned off when the power is turned on again after the power is turned off. It is a thing.

The door control section includes a door opening / closing state storing means for storing the opening / closing state of the door at a predetermined cycle, a power-on detecting means for detecting the return of the power, and a power-on detecting means for detecting the power-on. When the rise is detected, a timer timing means for blocking the opening and closing operation of the door for a predetermined time, and after blocking the opening and closing operation of the door for a predetermined time by the timer timing means, immediately before the power is shut off by the door opening / closing state storage means. A door opening / closing state restoring means for outputting a door opening / closing command based on the stored door opening / closing state.

The door control section has at least an announcement control means for notifying the opening / closing operation of the door.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows a first embodiment of the present invention. It is a functional block diagram of the door control part which shows. In the figure, reference numeral 1 denotes an elevator car that lifts and lowers passengers, 2 denotes a car door that opens and closes an entrance of the elevator car 1, and 3 denotes an elevator control that controls the elevator car 1 to move up and down and controls the opening and closing of the car door 2. Device. Reference numeral 4 denotes a door driving device that opens and closes the car door 2 in accordance with a control command from the elevator control device 3. Reference numeral 5 denotes a car opening / closing operation of the car door 2 in response to a control command from the elevator control device 3. Announcement device.

An operation control unit 30 is built in the elevator control device 3 to operate the car 1 up and down in response to a passenger's call, and to control opening and closing of the car door 2 when the car 1 reaches a target floor. Reference numeral 31 denotes a door control unit that opens and closes the car door 2 in accordance with the car door 2 opening / closing control command output by the operation control unit 30. The door control unit 31 is usually provided in the car 1, but may be built in the elevator control device 3. Further, reference numeral 32 denotes a door opening / closing control unit for outputting an opening / closing command for opening / closing the car door 2 to the door driving device 4, and 33 denotes a control signal and a door opening / closing state signal from the door opening / closing control unit 32 at a predetermined cycle. , And stores the open / closed state of the door.

Here, the door opening / closing state storage means 33 always stores the door opening / closing state at a predetermined cycle during normal operation of the elevator. That is, whether the door is fully closed, fully opened, during the door opening operation, or during the door closing operation, or if the door is being opened or closed, the opening / closing position is stored in the door opening / closing state storage means 33.
To memorize. Also, when the door opening / closing control means 32 outputs a door closing command and a door opening command to the door driving device 4, the door opening / closing state may be stored in the door opening / closing state storage means 33 at the timing of the output. . Furthermore, when the fire fighting operation is being performed, for example, in an operation mode related to the opening and closing of the door, the state of the fire fighting operation is stored in the door opening / closing state storage unit 33.

Further, 34 is a power rising detection means for detecting the rise of the power supply, 35 is a count timer for measuring a predetermined time after the power rising detection means 34 detects the rise of the power, and 36 is a count timer 35. Is a door opening / closing state restoring unit that outputs a stored car door 2 opening / closing command based on the latest door opening / closing state stored in the door opening / closing state storage unit 33 after measuring a predetermined time. Reference numeral 37 denotes an announcement control unit that outputs a message notifying the door opening / closing operation to the announcement device 5 when the door opening / closing control unit 32 opens / closes the car door 2.

Next, the operation will be described. FIG. 2 shows Embodiment 1 of the present invention. 6 is an operation flowchart of the door control unit at the time of power restoration. This operation is performed when the rise of the power supply is detected. In the figure, when the rise detection means 34 detects the rise of the power supply in step S1, the count timer 35 is started in the next step S2. . Further, the opening and closing operation of the door is prohibited in step S3. In the next step S4, the count timer 3
It is determined whether or not a predetermined time has elapsed in step 5, and if the set time has elapsed, the process proceeds to the next step S5.

Next, in step S5, the door opening / closing operation prohibited in step S3 is confirmed. In step S4, it is confirmed that the count timer 35 has counted a predetermined time, and the door opening / closing operation prohibition is released to enable the operation. . Further, step S6
Then, the door open / closed state stored in the door open / closed state storage means 33 before the power failure occurs is restored. The details of the door opening / closing state restoration processing will be described later. Then, after completing the processing from step S1 to step S6 following the power-on, the door opening / closing state storage means 33 is activated in the next step S7 to start storing the door opening / closing state.

Here, the operation of the elevator when a power failure occurs, the power failure is recovered, and the power is restored will be described. First, when a power outage occurs, the door stops moving. That is, when the door is fully closed, the door remains fully closed, and when the door is open, the operation stops at that position. Next, when the power failure is restored and the power is restored, the restoration of the power is detected and the startup of the elevator system is started. Immediately after the power is restored, it will be a transitional period of the startup of the elevator system, so that the door does not close during this time,
It is necessary to prevent the opening and closing operation of the door, and the opening and closing operation of the door is prohibited for a predetermined time after the start-up of the power supply is detected, so that the door is not moved from the current position. Then, after the predetermined time has elapsed and the elevator system has completely started up, the prohibition of the opening / closing operation of the door is released. Further, based on the open / closed state of the door at the time of the power failure stored in the door open / closed state storage means 33, the open / closed state of the door at the time of the power failure is restored. Thereafter, storage of a new door opening / closing state is started.

Next, the operation of the door open / close state reproduction process will be described. 3 shows a first embodiment according to the present invention. It is a flowchart of a door opening / closing state reproduction process showing the above. In the figure,
First, in step S600, the door open / close state immediately before the occurrence of the power failure stored in the door open / close state storage unit 33 is read. Next, in step S601, it is determined whether the read and opened state of the door immediately before the occurrence of the power failure is fully closed. At this time, if it is fully closed, the process immediately returns to the main program. If it is not fully closed, the process proceeds to the next step S602.

Next, in step S602, it is determined whether or not the read and opened state of the door immediately before the occurrence of the power failure is a door opening operation. At this time, if the door opening operation is being performed, the next step S6
Go to 03. If the door is not being opened, the next step S6
Go to 05. In the next step S603, the door opening / closing state restoring means 36 outputs a door opening command to the door opening / closing control means 32 to reproduce the door opening operation. Further next step S6
At 04, the door is kept in the fully open state for a predetermined time, and then the process proceeds to step S609.

Next, in step S605, it is determined whether or not the read and opened state of the door immediately before the occurrence of the power failure is a door closing operation. At this time, if the door closing operation is being performed, step S609 is performed.
Proceed to. If it is not during the door closing operation, the next step S606
Proceed to.

Next, in step S606, it is determined whether the read and opened state of the door immediately before the occurrence of the power failure is fully opened. At this time, if not fully opened, the process proceeds to step S609.
If it is fully opened, the process proceeds to the next step S607.

Next, in step S607, it is determined whether or not the read operation mode of the elevator immediately before the occurrence of the power failure is the fire fighting operation. At this time, unless the fire fighting operation is being performed, the process proceeds to the next step S609. If the fire fighting operation is being performed, the process proceeds to step S608.

Next, in step S608, the door opening / closing state restoring means 36 outputs a door opening command to the door opening / closing control means 32 to ensure the safety of the fire fighter during the fire fighting operation, and returns to the main program.

Next, at step S609, the door opening / closing state restoring means 36 outputs a door closing command to the door opening / closing control means 32 to ensure safety, and returns to the main program.

Here, the operation of the elevator door opening / closing state reproduction process when power is restored will be described. After the power failure is restored and the power is restored, after the elevator system is completely started up, the operation of the door at the time of the power restoration is performed based on the opening / closing state of the door immediately before the occurrence of the power failure stored in the door opening / closing state storage means 33. decide. The stored open / closed state of the door is one of a fully closed state, a fully opened state, a door opening operation, and a door closing operation, and further stores whether a fire fighting operation is being performed.

First, when the open / closed state of the door is stored as fully closed, the fully closed state of the door is maintained. Next, when the door opening / closing state is stored as the door opening operation, a door opening command is output to keep the door fully open for a predetermined time, and after a predetermined time has passed, a door closing command is issued to ensure safety. Is output and the door is closed.

Next, if the open / close state of the door is stored as the door closing operation, a door close command is output to close the door. Also,
If the open / closed state of the door is stored as being fully open, it is determined whether or not the fireman is in operation. If the fireman is in operation, a door open command is output and the door is fully opened. At this time, in the case of normal operation instead of firefighter operation, a door closing command is output and doors are closed to ensure safety.

The door opening / closing control means 32 outputs a door opening announcement command and a door closing announcement command to the announcement control means 37 when outputting a door opening command and a door closing command. Then, the announcement control means 37 outputs respective voice messages to the announcement device 5 in accordance with the door opening announcement command and the door closing announcement command to notify the passenger of the door opening / closing operation.

With the above configuration, the door does not suddenly open and close when power is restored, and the state of opening and closing the door when a power failure occurs can be continued. Further, when the door is being opened when an instantaneous power failure occurs, it is possible to avoid an accident in which the door is closed and the passenger is pinched when the power is restored. Further, the trouble of operating the door open button when the door is suddenly closed is eliminated. In addition, since the door closing operation is started after notifying the passenger that the door is closed, the passenger can know in advance that the door will be closed, and can avoid a pinch accident.

[0028]

Since the present invention is configured as described above, it has the following effects.

An elevator control device which includes a door driving device for opening and closing the door of an elevator car and outputs an opening / closing command for the door, stores the opening / closing state of the door at a predetermined cycle, and turns off the power after shutting off the power. When re-input,
By providing a door control unit that outputs a door opening / closing command based on the door opening / closing state stored immediately before the power is shut off, the door opening / closing state immediately before the power outage occurs is indicated by the next opening / closing command. It is possible to provide an elevator control device that can be continued until it is issued.

The door control section includes a door opening / closing state storing means for storing the opening / closing state of the door at a predetermined cycle, a power-on detecting means for detecting the return of the power, and a power-on detecting means for detecting the power-on. When the rise is detected, a timer timing means for blocking the opening and closing operation of the door for a predetermined time, and after blocking the opening and closing operation of the door for a predetermined time by the timer timing means, immediately before the power is shut off by the door opening / closing state storage means. A door opening / closing state restoring unit that outputs a door opening / closing command based on the stored door opening / closing state is provided, so that when the instantaneous power failure occurs, the door is being opened, and when the power is restored, the door is closed immediately. It is possible to provide an elevator control device that can operate to prevent a passenger from being pinched.

Further, the door control section has an announcement control means for notifying at least the opening / closing operation of the door.
When power is restored, the passenger is notified that the door will be closed, and then starts the door closing operation, so that the passenger can recognize in advance that the door will be closed, and can avoid being caught in the elevator. Can be provided.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention. Configuration diagram of the door control unit showing

FIG. 2 is a first embodiment of the present invention. Flowchart of operation of the door control unit at the time of power restoration

FIG. 3 is a first embodiment of the present invention. Opening / closing state reproduction process flowchart showing

[Explanation of symbols]

1 car, 2 car doors, 3 elevator control device, 4
Door driving device, 5 announcement device, 30 operation control unit, 31 door control unit, 32 door opening / closing control means, 33 door opening / closing state storage means, 34 power start-up detecting means, 35 count timer, 36 door opening / closing state restoring means, 37 Announcement control means.

Claims (3)

[Claims] 1. An elevator control device comprising a door driving device for opening and closing a door of an elevator car, and outputting an opening / closing command for the door. An elevator control device comprising: a door control unit that outputs a door opening / closing command based on a door opening / closing state stored immediately before power is turned off when power is turned on again. 2. A door control unit comprising: a door open / closed state storage unit for storing a door open / closed state at a predetermined cycle; a power onset detection unit for detecting a return of the power supply; When the rise is detected, a timer timing means for blocking the opening and closing operation of the door for a predetermined time, and after blocking the opening and closing operation of the door for a predetermined time by the timer timing means, immediately before the power is shut off by the door opening / closing state storage means. The elevator control device according to claim 1, further comprising a door opening / closing state restoring unit that outputs a door opening / closing command based on the stored door opening / closing state. 3. The elevator control device according to claim 1, wherein the door control unit includes at least an announcement control unit that notifies an opening / closing operation of the door.