JPH0565431B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for controlling an elevator that services a plurality of floors in response to hall calls and car calls.

[Conventional technology and problems]

The most common operating method for operating an elevator independently is the directional shared fully automatic method. This means that a large number of calls made by the car call button and the hall call button are registered at the same time, and the car is activated in response to the calls. While driving in one direction, the system responds to calls in the same direction one after another, and when there are no more calls in front, it automatically reverses the driving direction, continues to drive in order to answer calls in that direction, and stops when there are no more calls. be. In the following explanation, this method will be referred to as the celere collection method.

According to this select collection method, for example, as shown in Fig. 8, a landing call jD for the descending direction of the j floor is generated, and while the car A is traveling in the ascending direction in response to this, a call for the ascending direction of the i floor is generated. Assuming that a hall call iU occurs, car A first responds to floor i and stops, then responds to car calls derived from there, and then responds to the call on floor j. In this case, the waiting time is very short on the i floor, while it is long on the j floor, resulting in variations in the waiting time at each landing.

In this way, in the celere-collection system, the order of response to calls is determined by the car position and driving direction, and since there is no time element (waiting time, etc.) as a control variable, the waiting time at each landing varies. There was a problem in that even if a long wait occurred, it could not be avoided.

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and in a control method for an elevator that operates in a celebratory manner, when the next floor to be stopped is the floor to be stopped in response to a hall call, the Calculate the expected waiting time on that floor assuming that the person passes once, and the expected waiting time on other floors where there is a hall call, and if the expected waiting time on that floor is equal to or greater than a predetermined value and the other floor If the expected waiting time is smaller than the maximum value of the expected waiting time, it means that the waiting time for that floor is longer than the waiting time for that floor when the waiting time for that floor is postponed after passing through that floor once. When there is a long-waiting call that is expected to be long, the floor of the long-waiting call is given priority to be answered by passing through that floor once.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. For convenience of explanation, the present invention is applied to an elevator installed in a building with 7 floors, and the judgment as to whether or not to pass through the floor where the elevator should stop in response to a hall call is made immediately before the start of deceleration. shall be taken as a thing.

FIG. 1 is a block diagram showing the overall configuration of an elevator system to which the present invention is applied. In the figure, 1 is a hall call registration device consisting of hall call registration buttons, etc., and 2 is a car call registration device consisting of car call registration buttons, etc. , 3 is a sequence control device that has the function of operating the conventional selector system and controls the sequence operation of the entire elevator (however, it does not judge whether deceleration is possible or not);
Reference numeral 4 refers to an operation control device which has a function of determining whether or not to decelerate to a floor where it can be stopped, and which manages the operation of the car in response to a call; 5 refers to a speed control device which controls the running state of the car such as speed, acceleration and deceleration; and 6 refers to A car drive device including a power control system and a drive motor, 7 is a sequence information signal indicating the elevator status such as the current floor (selector) of the car and a floor where it can be stopped (advance selector), and 8 is whether or not deceleration to a floor where it can be stopped is possible. 9 is a deceleration determination request signal requesting a determination of , and 9 is a deceleration determination response signal commanding prohibition/permission of deceleration to a stoppable floor.

FIG. 2a is a table showing the timing of determining whether or not the elevator can be decelerated in this embodiment, and Ajk represents the time from when the car departs from the J floor to when it is determined whether or not it can be decelerated to the K floor.

Figure 2b is a table showing the deceleration time of the elevator in this embodiment, where Djk is k when the car departs from floor j.
It represents the time from when it is decided to decelerate to the floor until it stops at the k floor.

For example, the timing for determining whether a car that departs from the first floor at time t = 0 [seconds] will decelerate to the second floor is A ₁₂ = 2.2 from Figure 2 a, so t = 0 + A ₁₂ = 2.2. [seconds], and if we decide to decelerate to the second floor at this time, since D ₁₂ = 3.5 from Figure 2b, t = 2.2 + D ₁₂ = 5.7 [seconds], that is, the car will leave the first floor. 5.7
It will stop on the second floor in seconds.

Since Ajk and Djk shown in FIG. 2 a and b are unique values determined by the speed of the elevator and the floor spacing, they are stored in advance in the memory (not shown) in the sequence control device 3 or operation control device 4. Set it.

FIG. 3 is a diagram showing an example of the occurrence of a hall call in order to explain the operation of this embodiment.
indicates the hall call for the i floor in the x direction, x=U indicates the up direction, and x=D indicates the down direction. For example, in Fig. 3, h _2D is a two-block landing call in the direction of exit, and the occurrence time is t = -12 [seconds],
The destination floor is the first floor, which means that when the car arrives, a car call for the first floor is registered.

FIG. 4 is a flowchart showing the procedure of the part of the operation of the traffic management device 4 in this embodiment for determining whether or not to decelerate in response to a call.

The meanings of each symbol used in FIG. 4 are as follows.

s...Latest departure floor.

l...Current floor where stopping is possible (floor where deceleration is possible).

F: Actual travel time from the latest departure floor s to the present.

Hix...The duration of the hall call hix on the i floor in the x direction up to the present time.

Wix...Estimated waiting time at the boarding point hix.

MAXW...The limit value (here,
60 seconds).

Next, regarding the operation when the present invention is applied when hall calls occur in the order shown in FIG.
This will be explained using the flowchart shown in FIG.

In addition, in explaining the operation, the following assumptions will be made for convenience.

Door opening time DO and door closing time DC when the car lands on the floor
is the same value regardless of floor or driving direction, and DO = DC = 2.5 [seconds].

Passengers are assumed to board and alight in zero time when the door is fully opened.

The landing waiting time on the i floor in the x direction is defined as the time from when the hall call hix occurs until the car stops landing on the i floor in the x direction and the door opens.

The sequence control device 3 performs the same operation as the conventional select-collect system, except that it does not have a function of determining deceleration.

For deceleration, at timing Ajk shown in FIG. 2a after the departure of the car, in response to the deceleration determination request signal 8 output from the sequence control device 3, the operation control device 4 sends a deceleration determination response signal 9 to permit deceleration. Performed when input.

The sequence control device 3 sends the car's current floor (selector), possible stop floor (preceding selector), running status (stop, acceleration, deceleration, direction, etc.) as sequence information signals 7 to the operation management device 4.
The following information is output every time they are updated.

The timing at which the stopperable floor is updated in the sequence control device 3 is the moment of startup when the car is stopped, and the moment when a deceleration prohibition is input from the operation control device 4 in the deceleration response signal 9 while the car is running. If deceleration permission is input, the system will decelerate and stop on that floor, so it will not be updated, but will be updated at the moment of the next startup.

In the operation management device 4, among its internal information,
s, l, hix, F, Hix, car call information and car running direction are determined by sequence information signal 7, signal from hall call registration device, signal from car call registration device 2, and timer information held by the device. Constantly updated by reference.

The operation management device 4 has a function of predicting a car call that transitions from a hall call (derived when a car arrives). (However, since this method is not directly related to the present invention, its explanation will be omitted.

The operation will now be explained based on the above assumptions.

Assume now that at time t=0 [seconds], the car has responded to the final car call, stopped on the 7th floor, and completed opening the door. At this point, as shown in FIG. 3, the hall call h _2D in the direction of descending to the second floor had only occurred 12 seconds before, and no other hall calls had occurred yet.

The sequence control device 3 immediately starts closing the door in order to respond to the riding call _h2D , starts the car in the downhill direction after the door is closed, that is, at t=0+DC=2.5 [seconds], and sets the stoppable floor l to 7. Update from floor to 6th floor. The latest departure floor s of the car at this time is the 7th floor, and the departure time is t=2.5 as described above.

Then, at the timing of A ₇₆ shown in Figure 2a,
That is, at the timing t=2.5+A ₇₆ =2.5+2.2=4.7, the timing for determining deceleration to the 6th floor is reached, and the sequence control device 3 outputs the deceleration determination request signal 8.

On the other hand, the operation control device 4 constantly checks whether the deceleration judgment request signal 8 has been input (procedure
J11), while not input, the latest values are set for the latest departure floor s and the possible stop floor l, and the actual travel time F and each landing call after departing from the latest departure floor s are set.
Each hix duration Hix is updated (steps J12 to J15).

When the deceleration determination request signal 8 is input at timing t=4.7, the process proceeds from step J11 to J16, and it is determined whether or not there is a car call at the stoppable floor l. If there is, a deceleration permission is output to the deceleration judgment response signal 9 (step J24), but at the current time t = 4.7, a new hall call h _7D has been generated, but the lth floor (currently 6
Since there is no car call on the floor), proceed to step J17. In step 17, it is determined whether there is a hall call to be answered on the l floor, but since there is no call at the moment, a deceleration prohibition signal is output to the deceleration determination response signal 9 (step J23).
Therefore, the sequence control device 3 does not enter the deceleration operation and updates the stoppable floor l from the 6th floor to the 5th floor. Currently, there are no hall calls or car calls from the 5th floor to the 3rd floor, so the number of floors where the train can stop without decelerating is updated one after another until l=2nd floor.

Then, when t = 2.5 + A ₇₂ = 2.5 + 11.6 = 14.1 and the deceleration judgment request signal 8 is output again, from now on, the floor l (2nd floor) where it is possible to stop will have a landing call to respond to.
Since there is h _2D , the process proceeds from step J17 to J18, and it is determined whether this hall call is the furthest call in the forward direction. Here, the farthest call in the forward direction is the last call to which a call can be answered without changing the current running direction of the car (the call can be made in either direction).

In this case, the car is in the downhill direction and there is no call ahead of h _2D , so h _2D is the furthest call in the forward direction.
If you pass this point, the rest of your driving will be meaningless, so you must stop. Therefore, if it is the farthest call in the forward direction, the process proceeds from step J18 to J24, and a deceleration permission is output.

The sequence control device 3 thus starts deceleration operation, and since _the deceleration time is D ₇₂ = 2.8 from FIG. Complete the door opening. At this time, the _h2D landing waiting time is 19.4+12=31.4 seconds.

At this point, the first floor car call is registered by the passenger who boarded from the second floor, so the sequence control device 3
completes closing the door at t=19.4+DC=21.9 and starts the car in the downhill direction.

The next deceleration judgment is made at t = 21.9 + A ₂₁ = 24.1, but at this time, landing call h _IU is registered on floor l (1st floor) where it is possible to stop (at t = 22.0), and at the same time car call is registered, it is necessary to stop, and output deceleration permission (step J16,
J24). Then, at t = 24.1 + D ₂₁ + DO = 30.1, the car that arrived at the 1st floor and completed the door opening has the 7th floor landing call that has already been registered above and the 3rd floor car call that is currently registered on the 1st floor. Therefore, t=30.1+DC=32.6
The door is closed and the machine is started from the first floor in the ascending direction.

When t = 32.6 + A ₁₂ = 34.8, the floor where it is possible to stop l
= Deceleration judgment is made on the second floor, but since there are no car calls or hall calls to respond to on the second floor, a deceleration prohibition signal is output and the vehicle passes through the second floor. and t=32.6+
When A ₁₃ =37.6, a decision is made to decelerate at the floor l = 3rd floor where the vehicle can stop. Since a car call is currently registered on the third floor, deceleration is permitted (steps J16 and J24).
The car stops on the third floor at t=37.6+D ₁₃ =40.4, t=
Door opening completed at 40.4 + DO = 42.9.

Next, in order to respond to the hall call h _7D , the sequence control device 3 starts the car in the ascending direction at the same time as the door is closed at t = 42.9 + DC = 45.4, and when the car can be stopped on the 4th floor, t = 45.4 + A ₃₄ =47.6, a deceleration judgment request signal 8 is output.

At this time, the call status is that in addition to the landing call h _7D , the landing call h _4U for the 4th floor ascending direction has been newly registered at t = 46.0, and therefore the floor where it is possible to stop l =
There is a hall call h _4U to answer on the 4th floor, and procedure J17
Proceed to J18. Now, above the hall call h _4U there is a hall call h _7D , so the hall call h _4U
is not the farthest call in the forward direction, so the traffic control device 4 decelerates in response to this platform call _h4U .
It is determined in steps J19 to J22 whether it is better to pass through the call once, service another call, and then respond. This judgment is based on the expected waiting time for each hall call, assuming that the car has passed through hall call h _4U ,
Here, if you respond to the hall call in the order of h _7D → h _4U , that is, the transition will be from the 7th floor → h _7D (derived)
In order to make a judgment based on the expected waiting time of each hall call when the car stops in the order of the car call floor → the fourth floor, first, in step 19, the car call that will transition from the hall call is predicted. Here, it is necessary to predict the car call that will transition from the 7th floor landing call h _7D , and it is now assumed that the 1st floor is predicted. Therefore, after passing through the 4th floor, the expected waiting time for each hall call is determined in step 20 when the train stops in the order of 7th floor → 1st floor → 4th floor.

At the time of t=47.6, the latest departure floor s=3rd floor, s
Actual running time from the time of departure from the floor to the present F=
2.2 [seconds], duration of hall call _{h 7D =} 43.6 [seconds],
The duration of h _4U is H _4U = 1.6 [seconds], and on the other hand, the expected waiting time Wix for hall call hix is determined by Wix = Hix + _k=i 〓 ^j=s (DC + Ajk + DJk + DO - F), so h _7D at this time Expected waiting time W _7D
The expected waiting time of h _4U and W _4U are respectively as follows.

W _7D = H _7D +A ₃₇ +D ₃₇ +DO−F =43.6+9.4+2.8+2.5−2.2 =56.1 [seconds] W _4U =H _4U +A ₃₇ +D ₃₇ +DO+DC+A ₇₁ +D ₇₁ HDO+DC+A ₁₄ +D ₁ 14+DO−F =1 .6 +9.4 + 2.8 + 2.5 + 2.5 + 13.8 + 2.8 + 2.5 + 2.5 + 7.2 + 2.8 + 2.5 - 2.2 = 50.7 [seconds] Once the expected waiting time at each platform is determined in this way, the The waiting time Wlx (in this case, W _4U ) of the landing call that is used to determine whether or not the boarding area is available is the expected waiting time Wix (in this case, W _4U and W _7D ) for each landing area.
It is determined whether the value is not the maximum value, that is, whether it is smaller than the maximum value (step J21). If the value is the maximum, it means that the service on that floor will be the worst by passing through that floor, so a deceleration permission is output (step J24) and the vehicle decelerates without passing through that floor. If it is not the maximum value, it means that even if you pass through that floor and postpone it later, there is a floor with even worse service than that floor, so the process proceeds to step J22 without outputting deceleration permission. Here, it is determined whether Wlx is smaller than MAXW, which is a predetermined value. Even if Wlx is not the maximum value, if the expected waiting time on that floor becomes long enough to exceed the predetermined value once you pass, then
J24 will slow down and respond without passing through that floor.

In this way, only when the conditions of both steps J21 and J22 are satisfied, the process proceeds to step J23, outputs a deceleration prohibition signal, and temporarily passes through that floor.

Now W _4U is smaller than the value of W _7D , and
Since it is smaller than MAXW (60 seconds), proceed to step J23 and pass through the 4th floor once. Thereafter, the sequence control device 3 and the operation management device 4 respond to the hall call h _{7D while repeating the deceleration judgment in the same manner as described above, and then respond to the car call h 7D} for the 1st floor and the hall call h _4U for the 4th floor ascending direction. , and then sequentially services the car calls on the 5th floor that have transitioned from there, and ends the service for all calls at t=107.4.

FIG. 5 shows the transition of the internal information of the operation control device 4 and the contents of each judgment at the time of each judgment of deceleration to the floor where the hall call is registered in the above-mentioned car operation.

Further, the car operation diagram in this embodiment is shown in FIG. 6a, and the waiting time and service completion time at each landing are shown in FIG. 7.

In addition, for the same call occurrence situation, Figure 6b shows a car operation diagram when operating in the conventional celere collection system, and Figure 7 shows the waiting time and service completion time at each platform at that time. Ta.

As is clear from FIG. 7, the waiting time for hall call h _7D in the direction of getting off on the 7th floor, which would have been a long wait of over 60 seconds in the conventional celere collection system, is now reduced to the waiting time for hall call h _4U in the direction of getting off the seventh floor. As a result, we were able to shorten the time to less than 60 seconds, and the waiting time for the _h4U platform, which had increased due to the temporary suspension of service, is now shorter than the waiting time for the _h7D .

Furthermore, the time required to complete the service from answering a hall call to arriving at the destination floor using a car call is particularly short compared to the conventional celere collection system _.
Instead of increasing the value of , we are shortening the particularly long h _7D .

In other words, long waiting times for hall calls have been reduced and services have been made more equal.

Note that in the above explanation, the decision as to whether or not to respond to a target hall call is made at the timing of deceleration decision for that call, but this is not limited to this, and is not limited to this. You can do it when you get to the next floor or any other suitable time before that.

Also, passing the hall call is not a prohibition on slowing down;
This may also be done by operating the call, such as once deleting the call registration and re-registering it after passing.

The expected waiting time for the hall may be calculated not only by predicting car calls but also by including hall calls that are likely to occur in the future.

When determining whether or not to respond to a target hall call, if the certainty of the car call, the prediction of a hall call that is likely to occur in the future, or the certainty of the expected waiting time at the hall is low, be sure to respond without passing. Good too.

Further, the present invention can also be applied to a fully automatic group sharing system in which a plurality of elevators are operated in conjunction with each other in a sequential manner.

〔Effect of the invention〕

According to the present invention, based on the celebratory system, when the next floor to stop is the floor of the hall call, even if you pass through that floor once and respond last, the waiting time at that time is reduced. If there are other boarding calls whose service is deteriorating and the waiting time exceeds, the service for the former will be postponed and the service for the latter will be given priority, which will impair the original function of the Celebration system. Therefore, it is possible to prevent long waiting times and equalize the service (landing waiting time and service completion time).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an elevator system to which the present invention is applied, FIG. A table showing the deceleration time, FIG. 3 is a diagram showing an example of the occurrence situation of a hall call in this embodiment, and FIG. 4 is a part of the operation of the traffic control device in this embodiment that determines whether deceleration is possible in response to a call. FIG. 5 is a flowchart showing the procedure of the operation, FIG. Figure 6b is a car operation diaphragm in the conventional system, Figure 7 is a diagram showing the waiting time and service completion time at each landing when the present invention is applied and the conventional system is applied, and Figure 8 is a diagram showing the car operation diaphragm in the conventional system. It is a diagram showing the relationship between calls and cars. 1... Hall call registration device, 2... Car call registration device, 3... Sequence control device, 4... Operation management device, 5... Speed control device, 6... Car drive device, 7... Sequence information signal , 8...Deceleration judgment request signal, 9...Deceleration judgment response signal.

Claims (1)

[Scope of Claims] 1. In a control method for an elevator that operates a plurality of floors by sequentially responding to hall calls and car calls using a directional boarding fully automatic system, the floor to be stopped next responds to a hall call. If it is a floor where you stop at a landing, calculate the expected waiting time on that floor assuming that you will pass through that floor once, and the expected waiting time on other floors where there is a hall call, and calculate the expected waiting time on that floor. A method for controlling an elevator, characterized in that when the waiting time is less than a predetermined value and is smaller than the maximum expected waiting time of the other floor, the elevator is temporarily passed through that floor.