JPS6013951B2 - Elevator operating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an elevator operating device.

Conventionally, mechanical type selectors have been used for elevators, so as the building in which the elevator is installed becomes taller, the overall height of the selector has to increase proportionally.

Therefore, if such a Hataba selector were to be installed, for example, in an elevator machine room of a skyscraper, a high-height one would be required just for that purpose, resulting in poor utilization of the machine room.

Therefore, in order to eliminate these drawbacks, a digital type Hata field selector composed of an electric circuit has been proposed in recent years.

Although the digital Hataba selector is thought to have more failure modes than the mechanical Hatayu selector, no consideration has been given to the specific means of failure detection and subsequent treatment. Therefore, in the event of an actual malfunction, a person may become trapped inside the car, the car may run in the completely opposite direction to the car's original direction, it may not be able to stop at the destination floor, or it may stop on a floor other than the destination floor. (Elevators also service non-service floors (e.g., vaults) that they should not serve.) They also cancel unserviced Hataba calls, and various other problems have occurred. This invention solves the above-mentioned drawbacks, and if the digital Hataba selector becomes abnormal, it automatically performs a corrective operation and determines the failure based on the subsequent state of the platform selector. The purpose is to provide a safe and reliable elevator operating device. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is a pulse generator, which generates pulses according to the distance traveled by the car (for example, one pulse is generated every time the car moves to the 5th side).
la is its output signal, 2a and 2b are up-travel signals that become "H" when the car is traveling in the up-direction, and 3a
, 3b is a downward traveling signal that becomes "H" when the car is traveling in the downward direction, 4a to 4d are AND gates, and 5 is a reversible counter that adds up when a pulse enters the UP input, and a pulse enters the DN input. and subtract.

5a is the output signal of the reversible counter 5, 6 is the reversible counter 5
A decoder that decodes the output signal 5a of the car detects that the car is between floors and outputs an output.

For example, when the car is halfway between the first and second floors, it emits an output,
The car continues to run and when it reaches the halfway point between the second and third floors, it outputs power again. 7 is a reversible shift register, which shifts to the right when a pulse enters the UP input, and shifts to the left when a pulse enters the DN input.

7a is the output signal of the reversible shift register, which becomes the car position signal corresponding to the actual floor.

8a to 8c are the lowest floor signals that become "H" when the absolute position of the car reaches the lowest floor. When these signals 8a and 8b become "H", the contents of the reversible counter 5 are all reset (
The contents of the reversible shift register 7 are set to a value indicating that the car is on the lowest floor (only the leftmost bit is "H").

8e to 8g are also the top floor signals, and signals 8e and 8f are "
When the signal becomes "H", the reversible counter 5 and the reversible shift register 7 are set to the top floor.

Assuming that the building in which the elevator is installed has N floors and the distance between floors is M meters, the number that the reversible counter 5 should count is that one pulse is generated every five times the car moves. Then, NXM 1000 = 20 sails M
(pieces).

Note that since the reversible shift register 7 is a register indicating an actual floor, it may be an N-bit reversible shift register. 9
Running signal that becomes "H" while the basket is running, 10 is a NOT gate, 1 1 a, 1 1 b are AND gates, 12,
13 is an output signal T after a certain period of time when the input signal becomes "H"
This is a timer that emits "H" and when the input signal becomes "L", the output signal also becomes "L", 12a and 13a are the output signals, 14 is the NOR gate, and 14a is the output signal,
1 5 is a counter that emits an output signal "H" when two or more input signals are "H", 15a is its output signal, 16 is an OR gate, 16a is its output signal, and 17 is a counter that outputs an output signal "H". 18 is an upward call signal that becomes "H" when a car call or a Hataba call exists above the car; 19 is a direction call signal that becomes "H" when a car call or a Hataba call exists below the car; 20 is a departure signal that becomes "H" when the car departs under normal conditions; 20 is a stop signal that becomes "H" when the car is stopped at a destination floor with a car call or a Hataba call; 21
a~2 1 e is an OR gate, 22 is an AND gate, 2
3a and 23b are prohibition gates (○ for AND gate function)
Gate with additional functions of the NOT gate marked), 24 is S
It is set when the input signal of the terminal becomes "rH", the signal of the output terminal Q becomes "H", the signal of Q becomes "L", and it is set when the input signal of the R terminal becomes "H", and the signal of the output terminal Q becomes "H".
A memory in which the signal of is "L" and the signal of Q is "H", 25
is a timer similar to timers 12 and 13, 26 is an up direction signal, 27 is a down direction signal, 28 is a departure command signal, 29 is a stop command signal, and 30 is a failure signal.

Generally, when the failure signal 30 is issued, the door is opened and subsequent services are disabled. 31
is a counter that counts the number of pulses of a pulse-like input signal, and may be set to a plurality of numbers (2, 3, . . . n).

) When counted, output signal 31a "H" is generated. The counter 31 can only be reset by turning off the power or by manual operation. Note that the counter 15 includes an abnormality detection circuit, OR gates 21a to 21c, inhibition gate 23a,
23b and memory 24 are automatic correction circuits, AND gate 2
2 constitutes a non-correction detection circuit, and OR gate 21e constitutes a fault signal generation circuit.

Now, we will explain the case where an elevator is installed in a 1-tsubo-tube building with 3 meters between floors.

From the above formula, the number that reversible counter 5 should count = 20
0x10x3=600.

Since the decoder 6 decodes between floors, the decoder 6 decodes 300, 900, and 1500, respectively.
, 2100, 2700 3300 390 stop 4500
, 5100th bit is decoded. Assuming that the car is now on the first floor, which is the lowest floor, the lowest floor signals 8a and 8b are generated, and the contents of the reversible counter 5 are all reset to a zero count state.

The contents of the reversible shift register 7 are set to a state where the car is on the first floor, that is, only the leftmost bit is set to "H".
Then, when a person gets on the car and registers a car call on the 5th floor, the upper call signal 17 becomes "H", so the prohibition gate 2
The output signal of 3a becomes "H", the memory 24 is set, and the upstream signal 26 becomes "H". Thereafter, when the car door is closed, the departure signal 19 becomes "H" and the departure command signal 28 also becomes "H", so that the car departs. When the car starts running in the up direction, the up run signals 2a and 2b are activated.
becomes "H" and the lowest floor signals 8a and 8b are no longer emitted.

Further, since the pulse signal la is emitted from the pulse generator 1 according to the amount of movement of the car, the pulse signal la is given as an input signal to the UP input of the reversible counter 5 through the AND gate 4a, and the reversible counter 5 The number of pulses is added up. Then, when the car reaches the halfway point between the first and second floors, that is, when the reversible counter 5 counts 30 solid pulses, the decoder 6 decodes the 300 pulses and issues an output. Since the output is generated only when counting 30 stitches, it is pulse-like. The pulse is input to the UP input of the reversible shift register 7 through the AND gate 4c, so the reversible shift register 7 shifts one bit to the right. In other words, of the output signals 7a of the reversible shift register 7, only the second signal from the left is output. This means that the car has been moved to the second floor. Thereafter, every time the car moves up and the reversible counter 5 counts 9001500, the decoder 6 outputs an output, and the reversible shift register 7 shifts to the 3rd and 4th floors, and then to the 5th floor. When the car arrives, the stop signal 20 becomes "H" in order to respond to the car call on the 5th floor, and the stop command signal 29 "H" is sent through the OR gate 21c.
The car decelerates and stops on the 5th floor. and,
I canceled the car call on the 5th floor and opened the door. As a result, the person in the car has arrived at the destination floor and gets off the car, and the operation ends. At this time, since the input signals to the timers 2 and 13 are in the form of pulses, the time limits of the timers 2 and 13 expire and they are reset before issuing the output signals 12a and 13a, but if the running signal 9 is If the pulse signal la is not emitted from the pulse generator 1 and the pulse signal la remains at "H" even though it is at "H", the AN
Since the output signal of the D gate 11b, that is, the input signal of the timer 13 remains at "H", the timer 13 issues an output signal 13a "H" after a certain period of time.

Therefore, the stop command signal 29 "H" is immediately issued through the OR gate 21c, and the train stops at the nearest floor where it can be stopped. Then, a failure signal 30 is issued from the OR gate 21e, so that from then on, the car is out of service with its door open. Next, a case will be described in which two or more car position signals are generated due to a malfunction due to a failure or a surge while the car is stopped in no direction.

Car position, that is, output signal 7a of reversible shift register 7
is being issued at two or more locations, the counter 5 issues an output signal 15a "H". Therefore, the output signal 16a "H" is also generated from the OR gate 16, and the signal 16a
resets the memory 24 via the OR gate 21a and the inhibit gate 23b. As a result, the downstream signal 27, which is the output signal of the memory 24, becomes "H". Further, the output signal 16a "H" passes through the OR gate 21b and issues a departure command signal 28, so that the car runs in the downward direction. (At this time, the counter 31 counts one pulse signal 16a. Then, when the car reaches the first floor, the lowest floor signals 8a to 8c "H" are emitted, so the lowest floor signal 8c "H" is issued as the stop command signal 29 via the OR gate 21c, and the car stops.At this time, the reversible counter 5 is reset to a zero count state by the lowest floor signal 8a, and the reversible shift register 7 is also set to the state of the first floor, and furthermore the counter 15
Since the output signal 15a also becomes "L", it will operate normally thereafter. Furthermore, if the output signal 7a of the reversible shift register 7 is still emitting two outputs even though the car has been moved to the lowest floor, the output signal 16a becomes "H".
Therefore, the lowest floor signal 8c “H” is OR.
Timer 25 via gate 21d and AND gate 22
Since the input signal becomes "H", the timer 25 is activated after a certain period of time (this time period may be longer than the time required to set the reversible shift register 7).

) Since the output signal ``H'' is generated, the failure signal 30 ``H'' is generated from the OR gate 21e, and the car becomes unable to be serviced thereafter. In this manner, when an abnormality occurs in the Hataba selector, the automatic correction circuit operates and the car is driven to the terminal floor.

If there is still an abnormality in the Hataba selector, a failure signal 30 is issued to prevent the car from operating thereafter. However, if such an automatic correction operation occurs multiple times, that is, if the output signal 16a of the OR gate 16 occurs multiple times, the counter 31 issues the output signal 31a "H" and the fault signal 30 becomes "H". .

Therefore, even if the positional relationship between the car and the Hataba selector has been restored to normal, the car will no longer be serviceable.
That is, if the same phenomenon occurs multiple times, it is considered that there is a problem somewhere, so a failure signal 30 is generated. Note that the car position, that is, the reversible shift register 7
If the output signal 7a of the NOR gate 14 is not output at any point, the output signal 14a of the NOR gate 14 becomes "H" and the OR gate 16
The output signal 16a becomes "H". The subsequent operation is the same as when there are two or more car positions, so it will be omitted.
Further, when the output signal 16a is "H", floors other than the terminal floor may be allowed to pass through.

Furthermore, instead of correcting the Hataba selector at the terminal floor, if an abnormality occurs, the system may be stopped at the nearest floor and corrected there.

However, in this case, a switch is required on each floor to detect the absolute position of the car. Also, if the details of the failure are displayed, it will be even more helpful.

When the car travels in the downward direction, the reversible counter 5 decrements each time a pulse is input, and when the car reaches the floor, an output pulse is issued from the decoder 6, and the reversible shift register 7 shifts to the left. It is easy to understand what will happen. It goes without saying that even in this case, the failure is detected in the same way as when the car is running in the upward direction. In the above explanation, the reversible counter 5 and the reversible shift register 7
Although the explanation has been given on a Hata field selector using a , other Hata field selectors using other counting devices can be implemented in the same way. Furthermore, for high-speed elevators, both a leading element, which moves ahead of the car by the deceleration distance, and a synchronizer, which moves in synchronization with the car, are provided, but it is clear that the same implementation can be applied to these as well. be.

As explained above, in this invention, when there is an abnormality in the digital type Hataba selector of the elevator, the positional relationship between the car and the Hataba selector is automatically corrected, and if the situation is still not normal, the subsequent operation is stopped. Since this is prevented, the elevator can be operated safely and reliably.

In addition, if the above automatic correction is performed multiple times, further operation is prevented even if the system returns to normal, so the safety and reliability of the Erebe-to-Sun series can be further strengthened. .

[Brief explanation of the drawing]

1 and 2 are block diagrams showing one embodiment of an elevator operating system according to the present invention. 1... Pulse generator, 2a, 2b... Upward running signal, 3a, 3b...' Downward running signal, 4a to 4d...
...AND gate, 5... Reversible counter, 6...
... Decoder, 7 ... Reversible shift register, 8
a~8c...lowest floor signal, 8e~8g...
Top floor signal, 9...Travel signal, 10...N
OT gate, 1 1a, 1 1b...AND gate, 1 2, 1 3...Timer, 1 4.・・・・
NOR gate, 1 5...force counter, 16...
...OR gate, 1 7...Upper call signal, 18...Lower call signal, 19...Departure signal, 20
...Stop signal, 21a-21e...OR gate, 22...AND gate, 23a, 23b...
...Prohibition gate, 24...Memory, 25.
・．． ...Timer, 26... Up direction signal, 27.
... Down direction signal, 28 ... Departure command signal, 29 ... Stop command signal, 30 ... Failure signal, 31 ... Counter. Note that the same parts in the figures are indicated by the same reference numerals. Figure 1 Fin Figure 2

Claims (1)

[Scope of Claims] 1. In an apparatus in which a digital landing selector is installed that counts pulses emitted in response to the movement of a car and issues a car position signal, and the car is operated by the operation of the landing selector, this landing an abnormality detection circuit that detects an abnormality in the selector; an automatic correction circuit that, when the abnormality detection circuit operates, causes the car to travel to a predetermined floor to match the actual position of the car with the car position indicated by the hall selector; When the automatic correction circuit operates, a non-correction detection circuit detects that the abnormality detection circuit operates while the car position signal of the predetermined floor is issued from the hall selector, and when the non-correction detection circuit operates. An elevator operating device characterized by comprising a fault signal generation circuit that generates a signal to prevent the car from operating. 2. A digital landing selector is installed that counts pulses emitted as the car moves and issues a car position signal, and when the car is operated by the operation of this landing selector, an abnormality in the landing selector is detected. an abnormality detection circuit that detects an abnormality, an automatic correction circuit that causes the car to run to a predetermined floor when the abnormality detection circuit operates, and matches the actual position of the car with the car position indicated by the hall selector; A counting circuit that detects the number of times the operation has been performed.
An elevator operating device comprising: a failure signal generation circuit that generates a signal to prevent operation of the car regardless of the output of the abnormality detection circuit when the counting circuit operates.