JPH0720824B2 - Elevator control equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an elevator control device including a position detection device that detects the current position of a car.

[Conventional technology]

Generally, in an elevator, in order to operate the car accurately, it is always necessary to detect the floor position of the car, and a position detection device for detecting the current position of the car is provided.

Conventionally, as a position detecting device of this type, for example, Japanese Patent Publication No. 55-
As disclosed in Japanese Patent No. 12963, an operating magnet, a rotating magnet that rotates according to the movement of the operating magnet and stops at one of two stop positions, and a change in magnetic flux accompanying the rotational movement of the rotating magnet. A switch composed of a switch that operates in response to the magnetic force of

By the way, in such a position detecting device, the rotation of the rotating shaft of the rotating magnet may become difficult or difficult to rotate due to the tightness of the rotating shaft of the rotating magnet, and this may cause the rotation of the rotating magnet to stop. Since it may not be possible to detect the position, it was necessary to perform careful maintenance and inspection work on the rotating shaft at all times.

Therefore, as one means for solving such a problem, as disclosed in, for example, Japanese Patent Laid-Open No. 62-150621, an elevator control device provided with the following position detection device has been proposed.

4 and 5 are views for explaining a conventional elevator control device of this type, and FIG. 4 is a vertical cross-sectional view of a hoistway portion showing an operating body and a detection body provided in the elevator control device, FIG. 5 is a block diagram showing the overall configuration of the elevator control device.

In FIG. 4, 1 is a building, 2 is a hoistway erected in the building 1, 3,4,5 are floors in the building 1, for example, three floors in the middle floor, and 6 is a hoistway. A car that moves up and down in the passage 2, 7 is an actuator fixed to the car 6, for example, magnets, 8, 9 and 10 are fixed to the portion of the hoistway 2, and the car 6 is the floor 3
In the state of being in the position of ˜5, the above-mentioned detectors 8 to 10 face the magnet 7, and when these detectors 8 to 10 reach the position where the magnet 7 faces as the car 6 moves up and down,
An auxiliary magnet (not shown) that responds to the magnet 7, lead switches 8a, 9a, 10a that operate in response to the response of the auxiliary magnet, and a non-magnetic container (not shown) that incorporates these lead switches 8a to 10a and the auxiliary magnet. Each is composed of

Further, in FIG. 5 showing the overall configuration of the conventional elevator control device, 11 is the lead switch of FIG. 4 described above.
A detection circuit connected to 8a to 10a, 12 is composed of this detection circuit 11, the magnet 7 in FIG.
Position detecting device for detecting the present position of the car 6, 13 is an abnormality detecting means for detecting an abnormal state of the position detecting device 12, and 14 is a stop for stopping the normal operation of the car 6 when the abnormal state is detected by the abnormality detecting means 13. Means, 15 is an operating device for operating the car 6.

In this conventional elevator control device, for example, an operating device
When the car 6 is lifted by driving 15 and is located on the floor 4 as shown in FIG. 4, the lead switch 8a of the detection body 8 located below the magnet 7 fixedly mounted on the car 6
Is closed, while the lead switch 10a of the detector 10 in the upper position is open. Further, in the detection body 9 facing the magnet 7, the lead switch 9a is closed until the ascending car 6 reaches the position of the floor 4, but this floor 4
When reaching the position of, the magnet 7 engages with the detection body 9,
The auxiliary magnet of the detector 9 responds and the lead switch 9a is switched from the closed state to the open state. As with the rise of this car 6, the car 6
Even when the car is descending, the lead switch 8a of the detector 8 located below the magnet 7 of the car 6 is closed, while the lead switch 10a of the detector 10 located above and the detector 7 facing the magnet 7 are closed. 9 reed switch 9a
Is open.

Then, from these lead switches 8a to 10a, the detection circuit 1
Based on the signal output to 1, the position detecting device 12 detects the car 6
Is located on the floor 4. Further, when the abnormal state of the position detecting device 12 is detected by the abnormality detecting means 13, the stopping means 14 stops the normal operation of the car 6 by the operating device 15 to ensure the safe operation of the elevator. .

In the conventional elevator control device configured as described above, no rotating magnets are provided on the detection bodies 8 to 10 to prevent malfunction of the reed switches 8a to 10a and prevent the cage 6 by the position detection device 12. It is possible to reliably detect the current position of the.

[Problems to be Solved by the Invention]

By the way, in the above-mentioned conventional elevator control device, the reed switches 8a to 10a are structures that are weak against impact,
The shock may cause the open state or the closed state to switch without being maintained, and accordingly, the position detection device 12 may not be able to detect the current position of the car 6, and the normal operation of the car 6 may be stopped. At this time, not only the passengers are confined in the car 6, but also the lead switch is operated by the worker.
Since the car 6 is stopped until the inspection and replacement of 8a to 10a and the like are performed, there is an inconvenience that the elevator user is annoyed during this period.

The present invention has been made in view of the actual situation in the related art as described above, and an object of the present invention is to detect an abnormal operation of a detection body forming a part of a position detection device for detecting the current position of a car. Even if the car can be operated, it is possible to automatically diagnose the operating state of the detection object of the position detection device and provide an elevator control device that can restart the normal operation of the car when normal. is there.

[Means for Solving the Problems]

In order to achieve this object, the present invention is composed of a detection body and a detection circuit, etc., installed at each floor position, which detects a proximity interaction with an operating body fixed to a car and outputs a detection signal. A position detection device for detecting the current position of the car, an abnormality detection means for detecting an operation abnormality of the detection body, and a stop for stopping the normal operation of the car when the abnormality detection means detects an operation abnormality of the detection body In an elevator control device including means, when the stopping means is activated, a holding means for holding the operating state of the car until the car arrives at the nearest floor, and the operation of the holding means to bring the floor to the nearest floor. Command means for instructing an emergency operation of the arrived car; determination means for determining the operating state of the detection object when the emergency operation of the car is performed according to the instruction of the instruction means; and the determination means for the detection object. The operating state of When it is determined that the normal, by releasing the actuation of said stop means and said command means are those having a return means for resuming the normal operation of the car.

[Action]

Since the present invention is configured as described above, when the abnormality detection means detects an operation abnormality of the detection body of the position detection device and the stop means operates, the operating state is held by the holding means and the car is the closest. Arriving on the floor of, the normal operation of this car is stopped. Then, the car that has arrived at the nearest floor is operated in an emergency according to a command issued by the command means.
At this time, the determining means determines the operating state of the detection body of the position detecting device, and if this operating state is normal, the returning means releases the emergency operation by the stopping of the car by the stopping means and the command of the commanding means. Restart normal operation.

As a result, even when an abnormal operation of the detection object of the position detection device is detected, the car can be operated, and the operating state of the detection object of the position detection device can be automatically diagnosed and normal operation can be performed. Normal operation of the car can be resumed.

〔Example〕

Hereinafter, the elevator control device of the present invention will be described with reference to the drawings.

1 to 3 are views for explaining an embodiment of an elevator control device according to the present invention. FIG. 1 is a block diagram showing the entire configuration of the elevator control device according to the present invention, and FIG. 2 is the present invention. FIG. 3 is an electric circuit diagram showing the main configuration of the elevator control device of FIG. 3, and FIG. 3 is a flow chart showing the processing procedure carried out by the elevator control device of the present invention. In FIGS. 1 and 2, the same components as those shown in FIGS. 4 and 5 described above are designated by the same reference numerals. That is, in FIGS. 1 and 2, 8a to 10a are lead switches, and 11 is these lead switches 8a to 10a.
Is a detection circuit connected to. The position detecting device 12 comprises this detecting circuit 11, an operating body fixed to the car 6, for example, a magnet 7, and detecting bodies 8 to 10 fixed to the hoistway 2 portion, as shown in FIG. This detector 8
-10 are auxiliary magnets (not shown) which respond to the magnet 7 when the car 6 reaches the position facing the magnet 7 when the car 6 is at the floors 3-5.
And reed switches 8a to 10a that operate in response to the reaction of the auxiliary magnets, and a non-magnetic container (not shown) containing these reed switches 8a to 10a and the auxiliary magnets.
It consists of Further, 13 is an abnormality detection means for detecting an operation abnormality of the detection bodies 8 to 10 of the position detection device 12, 14 is a stop means for stopping the normal operation of the car 6 in accordance with the abnormality detection by the abnormality detection means 13, and 15 is a car 6 It is a driving device for driving.

Then, in FIG. 1 showing the overall configuration of this embodiment,
Reference numeral 20 is a holding means for holding the operation state of the car 6 until the nearest floor is reached when the stop means 14 is activated, 21 is a command means for instructing the emergency operation of the car 6 that has arrived at the nearest floor, and 22 is Judgment means for judging the operating states of the detection bodies 8-10 of the position detection device 12 when the driving device 15 drives the car 6 according to the command of this command means 21, 23 is the detection body of the position detection device 12 by this judgment means 22. When it is determined that 8 to 10 operate normally, the normal operation of the car 6 is stopped by the stopping means 14 and the emergency operation command of the car 6 is canceled by the command means 21 and the normal operation of the car is resumed. It is a means.

In FIG. 2 showing the main configuration of this embodiment, 11a is provided in the position detecting device 12, and the lead switches 8a to 10a detected based on the signals from the reed switches 8a to 10a input to the detection circuit 11. A memory for storing the numerical value of 1 as the numerical value indicating the current position of the car 6, that is, the synchronous floor of the car 6, and the detecting circuit 11 Through reed switch
The first inspection relay for inspecting the operating state of 8a to 10a, 25 is a normally open contact that is closed when the car 6 is in any door zone of the floors 3 to 5, etc., 26 is the car 6 stored in the memory 11a. Normally open contact that closes when the numerical value indicating the synchronous floor matches a predetermined numerical value that indicates the top floor (not shown), 27 is a normally closed contact that opens when this normally open contact 26 closes, and 28 is a top floor. A detection switch for detecting the presence of the car 6, 29 is the current position of the car 6 stored in the memory 11a,
That is, a normally open contact point that is closed when the numerical value indicating the synchronous floor matches a predetermined numerical value indicating the lowest floor (not shown), 30 is a detection switch for detecting that the car 6 is on the lowest floor, 31 Is a first synchronous inspection relay energized by energization, 32 is a normally open contact of the first synchronous inspection relay 31, 33 is a normally open contact of the first inspection relay 24 described above, and 34 is a normal operation of the car 6. An abnormality detection relay that is activated when at least one of the normally open contacts 32 and 33 is closed, and 35 and 36 are abnormality detection relays 34
Normally open contact, 37 is a normally closed contact of the abnormality detection relay 34, 38 is a normally open contact that is closed when the next floor of the car 6 that responds to a call command is the floor that issues a call command, and 39 is a car A normally open contact that is closed when 6 is in the deceleration position, 40 is a deceleration command circuit that commands the operating device 15 to decelerate the car 6 by energization, 41, 4
2 is a normally open contact that is closed when an electric motor (not shown) that drives the car 6 rotates, 43 is a normally closed contact that opens when the normally open contact 41 is closed, 44 is a normal operation command circuit that commands the operating device 15 to perform normal operation of the car 6. , 45 is a timer for counting a predetermined time when the normally-open contact 36 is closed, for example, the time required for the car 6 to stop at the floor position and the passenger exits from the car 6 due to the urging of the abnormality detection relay 34, 46 is a normally open contact that is closed when the timer 45 completes counting for a predetermined time, 47 is a switching relay that is energized when the normally open contact 46 is closed, 48, 49, 50 are normally open contacts of the switching relay 47, 51, 52 are switching relays 4 respectively
7 normally closed contacts and normally open contacts, 53 and 54 are also switching relays 47
Normally closed contact and normally open contact, 55 is an emergency operation command circuit for instructing the operation device 15 of FIG. 1 to perform an emergency operation when the normally open contact 50 is closed, and 56 is a lead switch 8a to 10 when the normally open contact 48 is closed.
The second inspection relay for inspecting the operating state of a, 57 is the normally open contact of the second inspection relay 56, and 58 and 59 are the second inspection relay 56.
Normally-closed contact, 60 is a second synchronous inspection relay energized by energization, 61 is a normally-closed contact of the second synchronous inspection relay 60, 62, 6
Reference numeral 3 is a normally closed contact of the second synchronous inspection relay 60.

The abnormality detection means 13 for detecting the operation abnormality of the detection bodies 8 to 10 of the position detection device 12 is provided by the first inspection relay 24, the first synchronous inspection relay 31, etc. Stopping means 14 for stopping the normal operation of the car 6
Has arrived at the nearest floor by means of the abnormality detection relay 34 or the like, and by means of the normally open contact 41 or the like, the holding means 20 for holding the operation of the car 6 until reaching the nearest floor when the stopping means 14 operates. The command means 21 for instructing the emergency operation of the car 6 is the switching relay 47, the emergency operation command circuit 55, etc., and when the emergency operation of the car 6 is performed by the command of the command means 21, the detection bodies 8 to 10 of the position detection device 12 are detected. The determination means 22 for determining the operating state of the second inspection relay 56, the second synchronous inspection relay 60, etc.
When it is determined that the 12 detection bodies 8 to 10 are in the normal operating state, the car 6 is stopped by the stopping means 14 and the emergency operation of the car 6 is canceled by the command of the command means 21.
The recovery means 23 for restarting the normal operation is constituted by the abnormality detection relay 34 and the like.

In this embodiment, the elevator is controlled according to the processing procedure shown in FIG. That is, for example, a basket 6
When the car 6 is at the position of the floor 4 and the detection body 9 faces the magnet 7 of the car 6 while the car is ascending in the hoistway 2, the detection body 8 below the magnet 7 is shown. The lead switch 8a is closed, while the lead switch 10a of the detector 10 located above is open. Further, in the detection body 9 facing the magnet 7, the auxiliary magnet responds by the engagement with the magnet 7 and the lead switch 9a switches from the closed state to the open state. Then, according to the signal output to the detection circuit 11, the read switches 8a-10
The number n of open ones of a is detected (step S
1), add 1 to the number n of the closed ones,
The added value is stored in the memory 11a as the current position of the car 6, that is, the value n + 1 indicating the synchronous floor of the car 6 (step S2), and the current position of the car 6 is detected. Next, when the car 6 is in the door zone and the normally open contact 25 is closed (step S3), the numerical value n indicating the synchronous floor stored in the memory 11a.
If +1 matches the one indicating the lowest floor, the normally open contact 29 is closed, while if it does not match, the normally open contact 29 is held open (step S4). When the numerical value n + 1 indicating the synchronous floor stored in the memory 11a matches the one indicating the top floor, the normally open contact 26 closes and the normally closed contact 27
On the other hand, if the two do not match, the normally open contact 26 is kept open and the normally closed contact 27 is kept closed (step S5).

The first inspection relay 24 inspects the operating states of the reed switches 8a to 10a via the detection circuit 11, and the reed switch 9a facing the magnet 7 and the reed switch 10a above the magnet 7 are closed. If there is, or when the reed switch 8a below the magnet 7 is in an open circuit state, the normally open contact 33 is closed (step S6).

When the normally open contact 29 is closed in step S4 described above, if the car 6 is on the bottom floor, the normally closed contact 30 opens, so the first synchronous inspection relay 31 is not energized, while the car 6 is on the bottom floor. Otherwise, the normally closed contact 30 is kept closed, so the normally open contact 25-normally closed contact 27-normally open contact 29-normally closed contact 30-normally closed contact 51-first synchronous check relay 31 circuit is closed. Then, the first synchronous inspection relay 31 is energized and the normally open contact 32 is closed (step S7). Similarly, when the normally open contact 26 is closed and the normally closed contact 27 is opened in step S5, the normally closed contact 28 is opened if the car 6 is on the top floor.
The synchronous check relay 31 is not energized, while the normally closed contact 28 is kept closed unless the car 6 is on the top floor, the first synchronous check relay 31 is energized and the normally open contact 32 is closed. (Step S8). These steps S4 and S7, steps S5 and S8
It is confirmed that the floor position of the car 6 detected by the position detection device 12 and the actual position of the car 6 are synchronized.

When the normally open contact 32 is held in the open state in steps S7 and S8, and the normally open contact 33 is held in the open state in step S6, the abnormality detection relay 34 is not energized and is normally closed. The contact 37 is maintained in the closed state, the normal operation command is continuously issued from the normal operation command circuit 44, and the normal operation of the car 6 is continued (step S9). At this time, the normally open contact point 38 closes when the floor which issues the call command, for example, the position of the floor 5 is approached and the position of the front floor 4 is crossed, and then the normally open contact point 38 when the car 6 enters the deceleration position. 39 is closed and the deceleration command circuit 40 operates. The deceleration command circuit 40 issues a deceleration command to the driving device 15 so that the car 6 is decelerated.

On the other hand, at least one of the normally open contact 32 closed in steps S7 and S8 or the normally open contact 33 closed in step S6, the abnormality detection relay 34 is energized and the normally open contact 35, The 3rd road is closed and the normally closed contact 37 is opened. When the normally open contact 35 of these is closed and the car 6 enters the door zone on the nearest floor and the normally open contact 39 is closed, the deceleration command circuit 40 operates and the car 6 is decelerated while the car 6 is decelerated. Stop at the floor position. When the rotation of the electric motor of the car 6 is stopped together with the stop of the car 6, the normally open contact 41 is opened and the normally closed contact 37 is also opened, so that the normal operation circuit 44 is cut off and the car 6 is held in the stopped state (procedure). S10). Then, as the other normally open contact 36 of the abnormality detection relay 36 is closed, the circuit of this normally open contact 36-normally closed contact 43-normally closed contact 58-normally closed contact 62-timer 45 is closed. The timer 45 is a predetermined time, for example, an abnormality detection relay
Start counting the time it takes for the passengers to leave the car 6 from the 34 bias. At this time, the normally closed contacts 43, 5
If at least one of the circuits 8, 62 is open, the timer 45 is not energized, so that counting of the predetermined time is not started (step S11). After that, when the passenger gets out of the car 6 and the timer 45 completes counting the predetermined time, the normally open contact point
When 46 is closed, this normally open contact 46 − Normally closed contact 59 − Normally closed contact 63 −
The circuit of the switching relay 47 is closed, the switching relay 47 is energized and the normally open contact 49 is closed, and self-holding is performed, and the normally open contacts 48 and 50 are closed and the normally closed contact 51 is opened and normally open. The contact 52 closes, the other set of normally closed contacts 53 also closes, and the normally open contact 54 closes. At this time, with the closing of the normally open contact 50, the emergency operation command circuit 55 instructs the emergency operation, and the operating device 15 operates the car 6 at a low speed (step S12).

During the operation of the car 6 according to the command from the emergency operation command circuit 55, the floor position of the car 6 detected by the position detection device 12 and the actual position of the car 6 detected by the position detection device 12 are performed in the same manner as in the above-described steps S1 to S5, S7, S8. When it is confirmed that the current position of the car 6 is in synchronization, and when the current position is not in synchronization, the second synchronous inspection relay 60 is energized, the normally open contact 61 is closed, and the normally closed contacts 62, 63 are opened. Further, the second inspection relay 56 inspects the operating states of the lead switches 8a to 10a in the same manner as described above in step S6 described above, and if they are in an abnormal state, they are energized, and the second inspection relay 56 is normally activated. The open contact 61 is closed and the normally closed contacts 62 and 63 are open.

Then, during this emergency operation, in steps S1 to S8, normally open contacts 57, 61
If both are kept open, the abnormality detection relay 34 is not energized and the normally open contacts 35 and 36 are opened, and the normally closed contact 37
Are kept closed. At this time, the normally closed contact
When 37 is closed, the normal operation command circuit 44 is activated again. At the same time, the normally open contact 50 is opened by stopping the timer 45 and the switching relay 47, and when the rotation of the electric motor for driving the car 6 is stopped when the car 6 arrives at the floor position, the normally open contact 42
Is opened and the abnormal operation command circuit 55 is cut off. As a result, the normal operation of the car 6 is restarted (step S9).

On the other hand, when at least one of the normally open contacts 57, 61 is closed in steps S1 to S8 during emergency operation, the abnormality detection relay 34 is energized,
The normally open contact 35 is closed, and in the same manner as step S10 described above,
When the car 6 enters the door zone on the nearest floor, the normally open contact 39 closes, and the deceleration command circuit 40 commands deceleration of the car 6,
Stops at the nearest floor position (step S10). Since the rotation of the electric motor of the car 6 is stopped and the normally open contact 42 is opened, and the normally open contact 50 is also opened as the switching relay 47 stops operating, the emergency operation circuit 55 is cut off (step S1).
1) As a result, the car 6 is held in a stopped state (step S13).

In the embodiment configured in this manner, when the operation abnormality of the detection bodies 8 to 10 of the position detection device 12 that detects the current position of the car 6 is detected, the holding means 20 causes the car 6 to reach the nearest floor.
It can drive passengers and drop passengers
When the counting of the predetermined time by 45 is completed, the command means 21 performs an emergency operation of the car 6, and the determination means 22 automatically diagnoses the operating states of the detection bodies 8 to 10 of the position detection device 12, and when the state is normal, The normal operation of the car 6 can be restarted by the returning means 23.

Although the detectors 8 to 10 provided on the floors 3 to 5 of the building 1 have been described in this embodiment, detections provided on floors above the floor 5 and floors below the floor 3 respectively. The same applies to the body.

〔The invention's effect〕

Since the elevator control device of the present invention is configured as described above, when an abnormal operation of the detection body of the position detection device that detects the current position of the car is detected, the car can be driven and the position can be changed. The operating state of the detection body of the detection device can be automatically diagnosed, and the normal operation of the car 6 can be resumed when it is normal, thus preventing passengers from being trapped in the car and preventing the elevator from failing. The effect is that the operating time can be reduced.

[Brief description of drawings]

1 to 3 are diagrams for explaining an embodiment of an elevator control device according to the present invention. FIG. 1 is a block diagram showing the entire configuration, and FIG. 2 is an electric circuit diagram showing the configuration of essential parts. FIG. 3 is a flow chart showing a processing procedure executed in this embodiment, FIGS. 4 and 5 are diagrams for explaining a conventional elevator control device, and FIG. 4 is a hoistway showing an operating body and a detecting body. FIG. 5 is a block diagram showing the overall structure of the portion. 2 ... Hoistway, 3-5 ... Floor, 6 ... Car, 7 ... Magnet (actuator), 8-10 ... Detecting body, 8a-10a ... Reed switch, 11a ... Memory, 12 ... Position detecting device, 13 ... Abnormality detecting means, 14 ... Stopping means, 15 ... Driving device, 20 ... Holding means, 21 ...
Command means, 22 ... Judging means, 23 ... Returning means, 24 ... First inspection relay, 31 ... First synchronous inspection relay, 34 ... Abnormality detection relay, 40 ... Deceleration command relay, 44 ... Normal operation command circuit, 45
… Timer, 47… Changeover relay, 55… Emergency operation command circuit, 56
… Second inspection relay, 60… Second synchronous inspection relay.

Claims (1)

[Claims] 1. A detector and a detection circuit, etc., installed at each floor position for detecting a proximity interaction with an actuator fixed to a car moving up and down in a hoistway and outputting a detection signal. ,
A position detection device for detecting the current position of the car, an abnormality detection means for detecting an operation abnormality of the detection body, and a stopping means for stopping the normal operation of the car when the abnormality detection means detects an operation abnormality of the detection body In an elevator control device comprising: a holding means for holding the operating state of a car until the car arrives at the nearest floor when the stopping means is activated, and an operation of the holding means to arrive at the nearest floor. Command means for instructing an emergency operation of the car, determination means for determining the operating state of the detection body when the emergency operation of the car is performed according to the instruction of the command means, and the determination means An elevator control device comprising: a resetting means for releasing the operation of the stopping means and the commanding means and restarting the normal operation of the car when the operating state is determined to be normal.