JPH0641355B2 - Elevator group management device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an elevator group management device that manages a plurality of elevators as a group, and particularly to a group management device when the stop floors of the elevators are not uniform. It is a thing.

[Conventional technology]

Stop floors of elevators managed as a group are not necessarily the same. For example, there are cases as shown in FIG.

That is, there is a building (BL) from the 1st floor to the 6th floor.
Two units, a and b, are managed as a group in (BL), with a serving the common floor (FC) on the 1st to 5th floors, while b is the common floor (FC) and the upper specific floor (FT). ) 6th floor and lower specific floor
The basement of (FB) (hereinafter B _1F called.) And 2 basement (hereinafter B ₂ floor called.) Is to service.

In the figure, (A) is the car of Unit a, which is descending on the 4th floor. (B)
Is a car of Unit b and is descending on the 5th floor. (10B ₂ ) ~ (10
6) is a hall call button provided on the halls on the _{second to} sixth floors B, (102U) is an ascending hall call button on the second floor, and (102D) is a like way hall call button.

In the conventional elevator group control elevator, B ₂ from the 2nd floor
It is assumed that the person who wants to go to the second floor pushes the descending hall call button (102D) on the second floor. Suppose that the car (A) is assigned to this call and stops on the second floor. This person rides in the car (A) and descends to the first floor, then changes to the car (B) and goes to the _second floor of B,
Or you have to use the stairs. In order to avoid this trouble, even if the car (A) stops on the second floor, it will be seen off without getting in and the car (B) will be pushed again by pressing the down hall call button (102D).
I waited for my service. Therefore, the number of unnecessary car stops may increase.

In addition, Japanese Patent Laid-Open No. 56-70280 proposes a method of installing a special button for a non-service floor on a common floor, but this is not preferable because it costs installation cost and damages the appearance of the elevator hall. It was a thing.

[Problems to be solved by the invention]

In the conventional elevator group management device, when the stop floors of the elevators are not uniform, the points due to this unevenness are not taken into consideration. Therefore, from the common floor where the cars commonly stop to the specific floor where only a specific car stops The elevator service was bad when going to. Also, in order to improve this service, a method of installing a special button for a specific floor on the common floor was adopted, but there were problems that it became expensive and the appearance of the elevator hall was impaired.

The present invention has been made in order to solve such a problem, in which a hall call is preferentially assigned to a specific car that can service the specific floor so that the common floor can be moved to the specific floor without providing a special button. The purpose is to improve the service for users going to.

[Means for solving problems]

An elevator group management apparatus according to the present invention is an elevator apparatus for group management by energizing a plurality of elevators in a building consisting of a common floor where a plurality of cars can commonly serve and a specific floor where only a specific car can service. At
With respect to hall calls generated on the common floor, allocation change means is provided for changing the allocation to a specific car in a certain case.

[Action]

When the hall call is registered, the elevator group management device according to the present invention is preferentially assigned to a specific car that can be serviced on a specific floor by the allocation changing means.

Example of Invention

1 and 2 show an embodiment of the present invention, and the case of application to the elevator shown in FIG. 3 will be described below.

In FIG. 1, (1) is a group management device, and (11) is a hall call button.
A well-known hall call registration circuit that registers this hall call when (10B ₂ ) to (106) are operated, (12) an assignment circuit that assigns the hall call to a predetermined car, and (13) a car (A) and Allocation change judgment circuit for changing allocation according to the situation of (B), (21) allocation circuit
A car controller that controls the car (A) so as to respond to the call assigned in (12), and a car controller that also controls the car (B) in (22).

Next, FIG. 2 shows an allocation circuit (12) and an allocation change judgment circuit (13).
Of these, the part related to the second floor down call is shown in detail.

In the figure, (31a) is the estimated arrival time for car a, which calculates the estimated time for the car (A) to respond to a car call and hall call on the way and then arrive at that floor in response to a given hall call. Arithmetic circuit, (31b) is also the expected arrival time arithmetic circuit for Unit b, (33) is a pulse generator consisting of one-shot multivibrator, which is emitted from the hall call registration circuit (11)
The up-down call signal emits the H signal only for a predetermined time from when it rises from the low level signal (hereinafter referred to as the L signal) to the high level signal (hereinafter referred to as the H signal). (34) The pulse generator (33) is a Unit of estimated arrival time t _a and b Unit estimated arrival time while emitting the H signal t _b
When t _a ≤t _b , the H signal from terminal P ₁
When t _a > t _b , the minimum value selection circuit outputs the H signal from the terminal P ₂ .

(35a) is a memory that is set when the terminal P ₁ is H signal,
The car control circuit (21) for the car No. a issues a second floor down call assignment signal. (35b) is a memory which is set when the terminal P ₂ is an H signal, and issues a second floor down call assignment signal to the car control circuit (22) for the car No. b. (37) is an inverter, which constantly outputs the H signal, and outputs the L signal when the second floor down call signal becomes H. (38a) is an inverter
OR to reset memory (35a) by H signal of (37)
An element, (38b) is an OR element that sets the memory (35b) by the H signal of the pulse generator (48), and (40) is a constant value output that outputs a constant value t ₁ (20 seconds in this embodiment). The circuit (41) is a constant value generating circuit that outputs another constant value t ₂ (15 seconds in this embodiment). (42a) is predicted arrival time t _a constant value t ₁ and compares t _a ≦ t comparator outputs an H signal when the _1, a (42b) is also the expected arrival time t _b and a constant value t ₁ Comparator to compare,
(44) is OR element whose output is the input of the comparator (42a) and (42b), (45) the absolute value of the difference value of the estimated arrival time t _a and t _b | t _a -t _b
A difference device that outputs |, and (46) is an absolute value | t _a −t _b |
It is a comparator that compares t ₂ and outputs an H signal when | t _a −t _b | ≦ t ₂ . (47) is memory (3
The AND element to which the output of 5a), the output of the OR element (44) and the output of the comparator (46) are input, (48) is a pulse generator consisting of a one-shot multivibrator, and the output of the AND element (47) is H
The H signal is output for a predetermined time from when the signal rises and the memory (35a) is reset via the OR element (38a).
The memory (35b) is set via b).

Next, the operation will be described.

As shown in Fig. 3, the car (A) is descending on the 4th floor,
It is assumed that the car (B) is descending on the 5th floor. At this time, it is assumed that the descending hall call button (102D) on the second floor is pressed. The down call on the second floor is registered in the hall call registration circuit (11). The pulse generator (33) is activated by this second-floor call signal, and the car
Estimated time until (A) and basket (B) arrive on the 2nd floor
The minimum value selection circuit (34) compares t _a and t _b . By the way,
When the estimated arrival time is t _a <t _b , the memory (35a) is set and the second floor down call assignment signal is generated in the car a.

By the way, this allocation is then changed to the allocation change judgment circuit (13).
Controlled by. That is, (a) the car (A) and the car (B) are both far from the second floor,
Both the estimated arrival times t _a and t _b are larger than a constant value t ₁ .

In this case, since the L signal is output from both the comparators (42a) and (42b), the output of the OR element (44) becomes the L signal. The output of the AND element (47) is also an L signal, and no pulse signal is generated from the pulse generator (48). Therefore, the allocation signal to the a-th car issued from the memory (35a) is continued.

(B) The expected arrival time of at least one of the cars (A) and (B) is less than the fixed value t ₁
When (A) and car (B) are separated from each other and the absolute value of the difference in expected arrival time | t _a −t _b | exceeds a certain value t ₂ .

In this case, the output of the OR element (44) becomes the H signal, but the output of the comparator (46) is the L signal, so the AND element (47)
Is an L signal. Therefore, as in the case of (a), the allocation signal to the Unit a is continued.

(C) The expected arrival time of at least one of the cars (A) and (B) is less than a certain value t ₁ and the car
When (A) and the car (B) are close to each other and the absolute value | t _a −t _b | is less than the constant value t ₂ .

In this case, the outputs of the OR element (44) and the comparator (46) are both H signals. Since the memory (35a) is set, it outputs the H signal. Therefore, the inputs to the AND element (47) are all H signals, the H signal is output from the AND element (47), and the pulse signal is output from the pulse generator (48). The pulse signal causes the memory (35a) to be reset and the memory (35b) to be reset. That is, the memory (35
From b), the second floor down call assignment signal is the car control circuit (2
It was issued to 2), and it was changed that Unit a was to answer the second floor down call until then, and Unit b will respond.

According to the above embodiment, the car (A) and the car (B) are both 2
As mentioned in (a), when we are far from the floor, we do not change the allocation, so even if there is a transient or temporary change in traffic conditions on the way, waiting passengers will not change such changes. Do not be confused by.

Also, when the distance between the car (A) and the car (B) is large,
As mentioned in section (b), since we did not change the allocation, the nearest car will be in service, and as a result, it will be in line with the intention of the waiting customer. That is, if the car (B) is made to service even when the car is extremely far from the second floor down call (102D) shown in FIG. 3, the waiting time becomes too long and the second floor down call (102D) The service against) is rather reduced. According to the above embodiment, it is possible to prevent this service deterioration.

Furthermore, the car (A) and the car (B) approach the second floor, and
When each car (A) and car (B) are also close to each other, (c)
As mentioned in the section, even if it is assigned to Unit a, the assignment is changed so that the car (B) that is servicing can be reached to a distant place, so you can go to the uneven floor without changing on the way. . Since the car (A) and the car (B) are originally close to each other, the increase in waiting time does not cause a problem even if the allocation is changed in this way.

In the above embodiment, the estimated arrival times t _a , t _b and a fixed value
Although the allocation and the allocation change are performed based on t ₁ and t ₂ , the determination may be performed based on the spatial gap, that is, the position of the car.

Further, the constant values t ₁ and t ₂ shown in FIG. ₂ can achieve the intended purpose even if they are set to different values for each floor and for each direction of hall calls.

In the above embodiment, the hall call is assigned according to the output of the minimum value selection circuit (34), but it is not limited to this. For example, as described in Japanese Patent Publication No. 58-48464. Alternatively, the predicted value may be squared and assigned to the car with the minimum sum.

Further, in FIG. 3, the allocation may be changed when the car (B) precedes the car (A).
That is, in FIG. 2, the difference calculator (45) indicates the estimated arrival time.
Obtain a mere difference value (t _a −t _b ) between t _a and t _b , and when this difference value is positive, output an H signal and input it directly to the AND element (47) without going through the comparator (46). You can do it like this.

Furthermore, although the above-mentioned embodiment describes the elevator of the allocation system, it is also applicable to the elevator of the system in which the first passing car or the car sequentially responds to the hall call.

That is, as shown in the main part of FIG.
When the car (A) of Unit a outputs the signal and reaches the 2nd floor in the downward driving, the H signal is output from the AND element (100)
A command is issued to pass the downstairs call. This causes the car (B) to respond.

〔The invention's effect〕

As described above, the present invention puts a plurality of elevators into service in a building composed of a common floor where a plurality of cars can commonly serve and a specific floor where only a particular car can service,
In an elevator group management device that manages these elevators as a group, the assignment to a specific car is changed to give priority to service when a hall call generated on a common floor is fixed. It is possible to increase the number of times a user who goes to the specific floor from the common floor to use the specific car without providing a parking lot, and to increase the number of times he / she can go to the specific floor without changing trains on the way.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is an overall configuration diagram, FIG. 2 is a block diagram showing details of essential parts, and FIG.
The figure is an explanatory view showing the stop floor of the elevator. FIG. 4 is a detailed block diagram showing the other embodiment of the present invention. In the figure, (BL) is the building, (FC) is the common floor, (FT) is the upper specific floor,
(FB) is lower specific floor, (A) is car of Unit a, (B) is car of Unit b, (12) is allocation circuit, (13) is allocation change circuit, (31a) and (31b) are arrivals Expected time calculation circuit, (45) is a difference unit. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A system in which a plurality of elevators are put into service in a building consisting of a common floor where a plurality of cars can serve in common and a specific floor where only a particular car can serve, and these elevators are managed as a group When the car that cannot serve the specific floor is assigned to the hall call that is generated on the floor and the car that cannot serve the floor is assigned, the first arrival prediction that calculates the estimated arrival time until this car arrives at the floor of the hall call Time calculation means, second expected arrival time calculation means for calculating an estimated arrival time until the particular car arrives at the floor of the hall call, the first estimated arrival time calculation means and the second estimated arrival time. A differentiator for calculating a difference between the estimated arrival times by each of the estimated arrival time calculating means, and whether the allocation of the landing call is specified when the difference is within a predetermined range. Group management device for an elevator, characterized in that a assignment changing means for changing the.