JPS597628B2 - Elevator group control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for group management of elevator cars.

Various group management methods have been adopted to manage multiple cars installed in a building as a group and to reduce waiting time at each landing as much as possible.

One of the group management methods is an assignment method.

This assigns a hall call to the best car to answer it.

Allocation operations used in allocation-based group management include direct allocation and additional allocation.

In direct allocation, when it is determined that a car call and a landing call that have already been assigned are in service (hereinafter referred to as availability), an available car is allocated to a landing call to which no car has been assigned yet, and this car is This is an operation that allows the passenger to go directly to the assigned hall call and not to respond to other hall calls.

Additionally, when a car in service with a car call or a landing call that has already been assigned approaches a floor with a landing call to which no car has been assigned, additional assignments are made in addition to that landing call. This is an operation in which a car is added and the car is made to respond to the assigned hall call.

Now, in such a group management system, if a long time has passed since a hall call was registered on a certain floor (hereinafter referred to as a long-waiting call), car assignment to this long-waiting call is given top priority. It looks like this.

However, the occurrence of a long wait call means that there are no cars available at that time, ie, all car and hall calls are in service.

In addition, when a long waiting call occurs, it is natural that a large number of car calls and landing calls are registered, and each car runs while making additional allocations to the landing calls in front of it in the driving direction. Since the service responds to calls, availability is delayed.

Therefore, even if the priority order for allocating a car to a long-waiting call is set first, the customer will have to wait even longer until the car is available, further increasing the sense of impatience among the waiting customers.

In addition, even if there is no availability, it is possible that the call will be answered by additional allocation, but as mentioned above, since the train is operated while additional allocation is made to other hall calls, it will not be necessary to respond to the long-waiting call. The time will stochastically become slower.

This invention improves the above-mentioned drawbacks by increasing the priority of additional allocation for long-waiting calls, speeding up responses to floors with long-waiting calls, and improving service to waiting customers. The purpose of this invention is to provide a group management device for elevators.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In Figure 1, a and b are the cars of No. 1 and No. 2, respectively.
3a to 5a are calls for going down to the landings on the 3rd to 5th floors, respectively, and 3b is calls for going up to the landings on the 3rd floor.

In Figure 2, 2aa to 6aa are 2nd to 6th floor landing calls 2.
When a to 6a are registered, the down hall call registration signal becomes "1", 1d to 6a (in Fig. 2, 2d to 6d correspond to the 1st to 6th floors, respectively, as shown in Fig. 5), and are in numerical order. The repeatedly generated scanning pulse 3e is a car position signal generated when the car a is on the third floor, and is pulsed by the scanning pulse 3d.

2A to 6A are time-limiting devices whose output becomes "1" after a certain period of time (for example, 40 seconds) has elapsed since the input became "1";
B~6B are inverter gates, 2C~6C are AND gates, 2ca~6ca are their outputs, 2D~6D are AND gates.
Gates, 2Da to 6Da are their outputs, 2E to 6E are AND gates, and 10 is a direct assignment device (details in Fig. 3) that assigns whether or not it can be used for a call down the hall, 102a to 1
06a is the output thereof, and direct assignment signals 102b to 10 which allocate car a to the downbound calls on the 2nd to 6th floors, respectively.
6b is a direct assignment signal that also assigns car b; 11
is an OR gate, 11a is its output, 12 is an additional allocation device (details shown in Figure 4) that allocates car a of the 1st car in service to the call down to the landing on the 3rd floor, 12a is its output and is an additional allocation signal, 13 is OR Gate, 14 is a storage device, 14aa is an output of the storage device 14 and is an assignment signal for a call for car a to go down the landing on the 3rd floor, 14ab is an assignment signal for car b, and 15 is a signal that car a has departed from the 3rd floor downwards. Departure detection signal that becomes "1" when 16 is an OR gate, 163
is the output of the OR gate 16, and is the assigned control signal for the downbound call of the third floor landing of car a, 1 62 , 1 64 ~
166 is also the assigned control signal for calls going down the landings on the 2nd and 4th to 6th floors, and 17 is "1" when car a is in descending operation.
This is the descending operation signal.

In FIG. 2, one set of additional allocation device 12, OR gate 13, storage device 14, and OR gate 16 are provided for car b and for each floor other than the third floor.

One set of the others is provided in common for the cars a and b.

In FIG. 3, 2f to 6f are scanning pulses that determine the priority order of allocating calls down the hall, and are emitted in the order of scanning pulses 6f→2f as shown in FIG.

2F to 6F are inverter gates, 2G to 6G, 2H to 6
H is an AND gate, and 20 is an available car signal 21 which becomes "1" when car a is available, and is also an available car signal for car b.

In Figure 4, 3I, 3J are inverter gates, 3K, 3L
is an AND gate, and 3M is an OR gate.

Next, the operation of this embodiment will be explained.

It is now assumed that car a is descending from the 6th floor and car b is ascending from the 2nd floor, and the positions of each call are as shown in FIG.

Assume that the call 3a for going down the landing on the third floor becomes a long-term waiting call.

Since the down calls 3a to 5a are registered, the down call registration signals 3aa to 5aa are "1".

Then, when the scanning pulses 3d to 5d become "1",
The outputs 3ca to 5ca of AND gates 3c to 5c are "1".
"become.

If we assume that car a is available and car b is running, then the available power) and the credit frame 20 are ``1 to 11 available car signal 21 is 0'', so the AND gate 3G ~
5G will be opened.

Since a car has not yet been assigned to any down-hall call, the assignment control signals 162-166 are "0" and the outputs of the inverter gates 2F-6F are "1".

Here, the scanning pulses 61 to 2f are sequentially emitted, and when the scanning pulse 5f is input, the output of the AND gate 5G is 1.
05a becomes "1", and car a is called 5a on the 5th floor.
will be assigned to.

At this time, if the downlink call 3a is a long-term waiting call, the scanning pulse 3' will be emitted preferentially, and the output 103a of the AND gate 3G will become "1", although a detailed explanation will be omitted. , car a will be assigned to the downbound call 3a on the third floor.

(As mentioned above, this is a measure against long waiting calls that has been used in the past.

) Currently, cars a and b are running and there are no available cars, so the signal 20.21 is "0".

Therefore, even if outputs 3Ca to 5Ca become "1", direct allocation is not performed.

After the down call registration signal 3aa on the third floor becomes “1”,
After a certain period of time has elapsed, the output of the timer 3A becomes "1", and when the scanning pulse 3d becomes "1", the output 3Da of the AND gate 3D becomes "1".

Since the signal 163 is "0", the inverter gate 3B
Since the output of is "1", AND gate 3E
The output of the OR gate 11 also becomes "1", and the output 11a of the OR gate 11 also becomes "1".

Therefore, the output of inverter gate 13J in Fig. 4 is "
0'', and the AND gate 3K is closed.

Therefore, the additional allocation signal 12a becomes "0", and no additional allocation is performed by the output 3Ca.

The output 11a is an additional allocation device 1 corresponding to each car and each floor.
2, so the down call 4a for the 4th and 5th floors
, 5a are not additionally allocated.

However, since the output 3Da is 11'' as described above, the output of the OR gate 3M is 1.

In addition, since car a is in descending operation, descending operation signal 17
is "1" and the assignment control signal 163 is "0", so the output of the inverter gate 13I becomes "1".

Here, when the car a comes to the third floor, the car position signal 3e is "1".
'', all the inputs of the AND gate 3L become 11'', and the additional assignment signal 12a becomes ``1''.

As a result, the output of the OR gate 13 in FIG. 2 becomes "1", the storage device 14 is set, and the allocation signal 14aa
becomes "1", and car a is additionally assigned to the third floor down call 3a, and responds to this.

At the same time, the output 163 of the OR gate 16 becomes "1", and the outputs of the inverter gates 3F and 3I become "0", so that from now on, the assignment of the car b to the down call 3a on the third floor is restricted.

On the other hand, as the assignment control signal 163 becomes "1-1", the output of the inverter 3B becomes "0", and the AND gate 3
The output of E also becomes "0", and the output of OR gate 11 becomes 1.
Since 1a becomes "0", it becomes possible to additionally allocate kat a and b thereafter.

When car a arrives at the third floor, the down call registration signal 3aa becomes "0", and when car a departs from the third floor, the departure detection signal 15 becomes "0".
1'', the storage device 14 is reset, and the allocation signal 14aa and the allocation control signal 163 become ``0''.

Furthermore, if the landing calls other than the downbound call 3a on the third floor are long waiting calls, it is clear that cars a and b will not be additionally allocated to other calls until the long waiting calls are allocated. It is.

Also, after car a is assigned to the down call 3a on the third floor as described above, if car b is available, then car b
is assigned to the call to be answered first among the remaining down calls 4a, 5a and up call 3b, so there is no reduction in operating efficiency.

In this way, the car in operation passes through the hall calls on the way and is additionally allocated only to long-term waiting calls, so that the response to long-term waiting calls is accelerated.

In addition, for cars that have not been additionally allocated for long-waiting calls, additional allocations for hall calls other than long-waiting calls on the way are restricted, so it is possible to check whether the car can be used early, and the long-waiting It is possible to optimally allocate calls or other hall calls, and provide good service to waiting customers.

In addition, although the above-mentioned example explained about the down-hall call,
It is also possible to easily carry out calls to the landing area.

FIG. 6 shows another embodiment of the invention.

In the figure, 4e to 6e are car position signals emitted when car a is on the 4th to 6th floors, 2N and 3N are storage devices, and 2
P, 3P, 3Q to 3S are AND gates, 3T, 3U are O
In the R gate, 3Ua is its output, 2Ua is the output of an OR gate 2U (not shown) also corresponding to the second floor, 3■ is a storage device, and 3Va is its output, which is used in place of the output 11a in FIG.

3Vb is the output of a storage device 3V (not shown) for car b, and 23 is an OR gate.

The down call 3a on the 3rd floor landing was a long waiting call, and A.
When the output 3Da of the ND gate 3D becomes 11'', the memory device 3N is set and the AND gate 3P is opened.

Thereafter, the running pulses 4d to 6d pass through the OR gate 23 and the AND gate 3P, and each time the output of the AND gate 3P becomes "1".

Since the car position signal 6e is "1", the output of the AND gate 3S is "1", and the output of the OR gate 3T is also "1".
” and the storage device 3V is set.

As a result, the output 3Ua of the OR gate 3U becomes "1", and the storage device 3N is reset.

Therefore, no car selection calculation is performed thereafter.

In other words, only the floor closest to the long-waiting call is selected.

The output 3Va of the pupil recording device 3v is input to the inverter gate 3J of FIG. 4 instead of the output 11a of FIG. 2, and the AND gate 3K is closed.

Therefore, as described above, car 7 is not additionally allocated to hall calls other than long-term waiting calls.

On the other hand, since the output 3Vb of car b, which corresponds to the output 3Va of the storage device 3v of car a, is "0", additional allocation is not restricted and the car is additionally allocated to the up call 3b on the third floor.

When car a is additionally allocated to down call 3a, the allocation control signal 163 becomes "1", the storage device 3■ is reset, and the output 3Va becomes "0", so that car a can be additionally allocated from now on. .

In the above embodiment, only one car closest to the floor with a long-term waiting call is selected, but it is also possible to select a plurality of cars that are close to the specified distance.

Further, each of the embodiments described above can be applied to a car whose in-car load is less than a specified value, or a car whose number of registered calls is less than a specified number, as well as whether it is available for use.

Furthermore, the system can be similarly applied to elevators in which a plurality of hall calls are recognized as one band, and when a hall call is registered, this is regarded as the demand for the band including that floor, and a car is allocated to this demand.

As explained above, when a long-term waiting call is detected, the present invention prevents the car from responding to the intermediate hall call, makes the car respond to the long-term waiting call, and prevents other cars from responding to the intermediate hall call. Since the response is blocked and the car is made available, it is possible to quickly respond to a floor where a long-term waiting call has occurred, thereby improving service to waiting customers.

Furthermore, since the above operation is performed only for cars whose number of car call registrations is less than a specified value, it is possible to respond more quickly to calls that have been waiting for a long time.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the relationship between elevator cars and calls;
3 is a logic and block circuit diagram showing an embodiment of the elevator group management device according to the present invention, FIG. 3 is a logic circuit diagram showing an embodiment of the orthogonal allocation device of FIG. 2, and FIG.
Logic circuit diagram illustrating an embodiment of the additional allocation device shown in FIG.
The figure is a pulse signal waveform diagram, and FIG. 6 is a logic and block circuit diagram showing another embodiment of the present invention. a, b... Cars of Units 1 and 2, 3a to 5b.
...3rd to 5th floor landing call, 2aa to 5aa...
...2nd to 6th floor landing call registration signal, 1d to 6d.
...Scanning pulse, 3e... Car position signal on the 3rd floor of Unit 1, 2f to 6f... Scanning pulse for determining allocation priority order, 2A to 6A... Timing device, 2B
~6B...Inverter gate, 2C~6C,2
D~6D, 2E~6E...AND gate, 2F
~6F...Inverter gate, 2G~6G,2
H~6H...AND gate, 3I, 3J...
...Inverter gate, 3K, 3L...AN
D gate, 3M...OR gate, 10...
...Orthogonal allocation device, 11...OR gate, 12...Additional allocation device, 13...
OR gate, 14... Storage device, 16...
...OR gate, 17...Descent operation signal, 20
...Car signal available for car No. 1, 21...
・Car signal available for car No. 2. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. Allocate a registered hall call to a car and an available car that has already responded to the already assigned hall call, or assign it to a car that is responding to the above call, and use the assigned car. In an elevator that responds to the call and the hall call assigned above, there is a call detection circuit that detects a long waiting hall call for which a specified time has elapsed since registration, and when this call detection circuit operates, it responds to the above-mentioned call. A blocking circuit is provided which prevents the currently responding car from responding to a hall call on the way and makes it respond to the long-waiting hall call, and prevents other cars from responding to the hall call on the way and makes it available for use. An elevator group control device characterized by comprising: 2. Assign a registered hall call to a car and an available car that has already responded to the already assigned hall call, or assign it to a car that is responding to the above call, and then use this assigned car to call the car and the car that has already been assigned In an elevator configured to respond to hall calls, a call detection circuit detects a long-waiting hall call for which a specified time has elapsed since registration, and a car detection circuit detects a car in which the number of registered car calls is less than a specified value. , and when the call detection circuit operates, the car detected by the car detection circuit is prevented from responding to the hall call on the way and is made to respond to the long-waiting hall call, or is prevented from responding to the hall call on the way. A group control device for an elevator, characterized in that it is equipped with a blocking circuit that makes the elevator available for use by being blocked.