JPH1179591A - Monitoring device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To return all elevator cages in a normal state to a floor of refuge by transferring the commanding operation of a management control in an abnormal state of a control system to each elevator cage controller and allowing each elevator cage to move by itself independently regardless of the state of returning order of the elevator cage. SOLUTION: When a signal 16 is output to inform that a control system is abnormal, power is cutoff (signal 5 is not output) and an independent power plant starts (a signal 6 is generated), the controller 2 of each elevator cage starts counting by a backup timer altogether. Time is set to each timer according to the returning order of each cage beforehand, and the time to be set is a total of time required for the cage and another cage which returns prior to the cage to return to each floor of refuge. For example, a first cage 2 finishes the counting of a timer 13 after establishment of an independent power plant and starts returning by outputting returning command 7 to itself and outputs returning completion signal 10 when it returns to the floor of refuge. Therefore, the control operation of the independent power plant when an elevator cage or monitoring device is out of order can be controlled and commanded by other elevator cages, which can be operated normally regardless of breakdown.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator monitoring system for monitoring a plurality of elevators.

[0002]

2. Description of the Related Art In a building where a plurality of elevators are installed, all elevators are usually driven by a commercial power supply from outside the building. When the commercial power supply is interrupted, equipment for driving an elevator using a self-generated power supply equipment is provided. However, since the self-generated power supply can supply only a limited amount of power, it is not possible to drive all elevators at one time. Usually, only one elevator can be driven for a plurality of elevator groups. It has become. For this reason, in the conventional elevator control device, when switching from the external commercial power supply to the self-powered power supply, the self-powered control system in which the elevators are operated one by one to the evacuation floor one by one to rescue the passengers trapped in the elevator. Driving function is provided.

[0003] An example of such a conventional elevator control device is disclosed in Japanese Patent Application Laid-Open No. 63-288883. FIG. 3 shows a signal system of the conventional self-running control operation automatic control system of the elevator control device, in which three elevators 1 to 3 perform a self-running control operation of one group, and the order of return is 1-. Units 2-3 are in order. As shown in FIG. 3, a commercial power supply detection signal 5 and a private power supply detection signal 6 are input to a monitoring device 4 that controls self-powered control of a plurality of elevators 1 to 3 in a private power system as a group. Is given as a signal. The monitoring device 4 sends return command signals 7 to 9 to the elevator control devices 2 of the respective units.
And a return completion signal 1 indicating completion of return to the evacuation floor from each elevator control device 2 to the monitoring device 4.
0 to 12 are provided.

[0004] Fig. 4 is a time chart showing such an autonomous control automatic operation state. When the commercial power detection signal 5 is turned off from on and the self power detection signal 6 is turned on, the monitoring device 4 outputs The return command signal 7 is output to the elevator of the first unit, and the first unit moves to the evacuation floor. Then, when returning to the evacuation floor, the control device 2 of the first elevator outputs a return completion command signal 10 to the monitoring device 4, and upon receiving this signal 10, the monitoring device 4 turns off the return command signal 7 to the first elevator. Then, the return command signal 8 is output to the next elevator No.2. After completion of the return of the second elevator, elevator 3
The elevator is returned to the evacuation floor, and the passengers in the elevators 1 to 3 are rescued.

[0005] Normal operation is performed in this manner. However, according to this method, when a certain elevator has a failure, a return completion command signal is not output, so that return to the next car cannot be performed. For this reason, conventionally, a backup timer relay set to the maximum required traveling time required to arrive at the evacuation floor after receiving the return instruction is provided, and when the return completion signal is not output from each elevator, this backup timer relay is provided. The timer relay terminates the return instruction of that unit and issues a return instruction to the next unit to deal with a failure.
For example, as shown in FIG. 5, when this elevator cannot operate during the self-starting operation of the first elevator, the return completion signal for the first elevator is not output from the monitoring device 4 even if the return command 7 is received. Although the elevators after the unit cannot return, the backup timer relay set to the maximum travel time required to arrive at the evacuation floor after receiving the return instruction is provided. Terminated the return command 7, output the return command 8 to the second elevator, and sequentially returned.

[0006]

However, in such a conventional elevator control apparatus, even if the restriction is made by the timer, the next car return command is issued unless a completion signal is received from the car which received the return command. Therefore, if the transmission is interrupted due to the failure of the monitoring device itself or the failure of one of the relays or the timer, there is a drawback that it is impossible to return to the next unit.

[0007]

In the elevator monitoring apparatus according to the present invention, the monitoring apparatus performs return control with the right of guidance in a normal state. However, when the monitoring apparatus and the elevator control apparatus are out of order, each of the elevator control apparatuses is controlled. The authority to return to the device side is delegated, and the elevators before and after are separated so that the elevator can return alone.

[0008]

Embodiments of the present invention will be described below. FIG. 1 shows a control system diagram of the elevator monitoring device and the respective elevator control devices according to the present embodiment at the time of autonomous control. FIG. 2 shows a time chart of the self-control operation in the present embodiment.

In FIG. 1, a method of returning the self-control when each control device 2 and the monitoring device 4 are normal is returned to each control device under the command of the monitoring device 4 as shown in FIG. The order is passed and the order is returned. However, the power supply status changes from power failure to self-powered operation, so that all the devices may not operate normally. In addition, a power failure due to a fire may cause the power supply to self-start, and some devices may be abnormal.

An embodiment of the present invention of the self-control operation in such a state will be described with reference to FIG. Signal 16 indicating that the control system is abnormal is ON
Power outage (signal 5 is OFF), autonomous state (signal 6 is O
At N), the control device of each elevator starts timer counting (signals 13 to 15) all at once. The timer previously sets the time for each car in the order of return, and the time is set to the total of the maximum required time for the previous car to move to the evacuation floor in response to the return command. In FIG. 2, since self-control has been performed in the abnormal state, the timers of the respective control devices simultaneously start counting.

The return order is the order of the first, second, and third units. First, since the first car is the first car, the backup timer 13 finishes counting after the self-generated power is established, and issues a return command 7 to the first car. As a result, Unit 1 starts returning and returns to the evacuation floor, and issues a completion signal 10. Here, the completion signal 10 is only output and has no meaning in control. Next, the backup timer 14 of the second unit, which is set to be equal to or longer than the maximum required time to complete the return of the first unit, finishes counting and issues a return instruction 8 to the own unit. As a result, the second unit starts returning. However, in this embodiment, an example is shown in which the second unit cannot perform the control operation due to a failure.

Next, the backup timer 15 of the third unit, which has been set to a time equal to or longer than the maximum required time to complete the return of the first and second units, finishes counting and issues a return instruction 9 to the own unit. As a result, Unit 3 starts returning, returns to the evacuation floor, and issues a completion signal 12.

As described above, according to the present invention, the control command operation in the abnormal state of the control system is delegated to each elevator control device, and can be cut off independently of the state of the elevator before and after the return order to operate independently in the own car. ,
All normal elevators can be returned. In FIG. 1, each return command and completion signal are connected to a monitoring device and each control device, and are transmitted one-to-one. However, the present invention is also applicable to a device that exchanges signals by multiplex transmission between control devices. it can. Further, the backup timer can be realized by either a hard timer or a soft timer.

[0014]

As described above, according to the present invention, the operation of the self-control operation when the elevator or the monitoring device fails is described.
The control command can be reliably given to the elevator that can be operated, and the elevator passengers can be rescued and evacuated regardless of the failure.

[Brief description of the drawings]

FIG. 1 is a control system diagram according to the present invention.

FIG. 2 is a time chart illustrating a self-control operation in the present invention.

FIG. 3 is a control system diagram in a conventional example.

FIG. 4 is a time chart 1 illustrating a self-control operation in a conventional example.

FIG. 5 is a time chart 2 illustrating a self-control operation in a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Elevator control device, 3 ... Elevator control device and signal transmission part in monitoring device, 4
... monitoring device, 5 ... commercial power supply detection signal, 6 ... private power supply detection signal, 7-9 ... return instruction, 10-12 ... return completion signal, 13-15 ... backup timer, 16 ... failure signal.

Claims (3)

[Claims] An elevator group consisting of a plurality of elevators is supplied with power from an emergency private power generator at the time of power failure for elevator operation, and the elevators in these groups are sequentially returned to the evacuation floor. In a monitoring device for an elevator that performs operation control, return command means for sequentially giving a return command to each elevator according to a predetermined order, and return command means when a failure occurs in a part of the devices in the group or the monitoring device. An elevator monitoring device having both a normal operation method and a failure operation method. 2. The method according to claim 1, wherein, as an operation method in the event of a failure, the authority is delegated so that the return instruction means can issue a return instruction solely within each elevator control device that controls the operation of each elevator, independently of the monitoring device. A monitoring device for an elevator, comprising: 3. The elevator according to claim 2, wherein each of the elevators to which authority has been delegated is used in each of the elevator control devices for controlling the operation of each of the elevators, regardless of whether the elevator is before or after returning, to a power outage, a self-generated power supply, and a failure. An elevator monitoring device characterized in that it returns independently by a time determined for each elevator according to conditions.