JPH0466789B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an elevator control method, and is particularly effective during down-peak times such as leaving work and lunch time.

[Conventional technology and problems]

Generally, an elevator picks up waiting customers by sequentially responding to hall calls in the same direction as the elevator is operating. However, during down-peak traffic conditions such as those occurring at office buildings and other locations during clock-off and lunch times, there are many customers waiting in the same direction on many floors at the same time, and most of them aim for the standard floor such as the first floor, so the car The upper floors quickly filled up, and customers on the lower floors were unable to get into the elevators for a long time. This state will be explained with reference to FIGS. 3 and 4.

FIG. 3 is a diagram showing the occurrence of waiting customers at each floor and the operation of the elevator, with time plotted on the horizontal axis.

In Figure 3, ▽〓○◎● all indicate the occurrence of one waiting customer (arrival at the hall), among which ▽ and 〓 indicate that the waiting customer operated the hall call button in the downward direction, Also, ▽ and ○ represent waiting customers who were able to board the cart smoothly when it arrived.
◎ and ◎ indicate waiting passengers who were left unloaded once before boarding the car (including when the car was full), and ● are passengers who were left unloaded twice before boarding the car. L ₁ is the elevator service line, and 1 at time t ₁
The car that left the floor arrives at the 8th floor at time t ₂ , and
Arrive at the 6th floor at time t ₃ , arrive at the 1st floor at time t ₄ , then depart for the 8th floor again, and continue driving in the same manner stopping at the called floors at each time from t ₅ to t ₁₁ . It shows that it is repeated. For simplicity's sake, the number of floors is assumed to be 8 from the 1st floor to the 8th floor, and all waiting customers are waiting in a descending direction with the 1st floor as the destination floor.
The incident occurred only on the 8th, 6th, and 5th floors, and the car has a capacity of 10 people.

Assuming that customers are waiting at time intervals as shown in Figure 3, when the car arrives at the 8th floor at time _t2 , there are already 4 customers waiting in the hall on the 8th floor. These four people boarded the car and departed from the 8th floor.
When I arrived at the 6th floor at time t ₃ , there were already 7 people waiting in the hall on the 6th floor, but since the car has a capacity of 10 people, only 6 people can get on board. Items are left behind on the floor. Since the car is now full, the fifth floor, where six customers are already waiting, is full, and the car arrives at the first floor at time _t4 . Next, when the car arrives at the 8th floor again at time t ₅ , there are two people waiting in the hall on the 8th floor, so these two people get into the car and arrive at the 6th floor at time t ₆ . A total of six people, one person who was left behind and five new passengers, board the car. time t ₇
When the Dekago arrived on the 5th floor, there were a total of 9 people waiting, including the 6 people who had passed through earlier, but since 8 people were already on board, the Dekago had already been boarded. Two people were unable to get on board, and as of t ₇ , seven people were left behind on the fifth floor. Similarly, the above-mentioned state is repeated thereafter. Figure 4 shows how the number of customers waiting on each floor changed at this time.

Figure 4a shows changes in the number of waiting customers on the 8th floor, b on the 6th floor, and c on the 5th floor, respectively, from time t ₂ to
t ₁₁ corresponds to that in Figure 3.

For example, in Figure 4a, at time t ₂ the car is 8
This shows that the car has arrived at the 6th floor and 4 waiting passengers have boarded the car.At time _t3 in Figure 4b, the car has arrived at the 6th floor and 6 of the 7 waiting customers have boarded the car. This indicates that one person was left behind.

As is clear from Figures 3 and 4, under traffic conditions such as during down-peak hours, upper floors receive priority service, and lower floors have more opportunities for passengers to pass through and be left behind. become more,
A problem arises in that the waiting times are significantly unequal between the upper and lower floors. Note that such problems occur not only during down-peak times as described above, but also when there are many customers waiting in the same direction on many floors.

To solve this problem, for example, group management systems have adopted methods such as reversing some cars on the middle floors and giving priority to the lower floors, but registering the upper floors in the car call If there are passengers, it will not be possible to turn around on middle floors, so it cannot be expected to be very effective, and no particularly effective solution could be found with a single elevator.

[Means for solving problems]

The present invention aims to solve the above-mentioned problems, and its feature is that when the car stops at a desired floor in response to a hall call, the car stops in front of that floor in the same direction as the car's driving direction. The presence or absence of a hall call is detected, and if there is a hall call, the set value of the full level (a value that sounds a buzzer and prohibits operation if the load in the car exceeds this value) is set only when the car is stopped at that floor than the rated value. The reason is that we changed it so that it is lower, and if there is no value, we do not change it as it is.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing the configuration of an elevator control device to which the present invention is applied, in which 11 is a hall call registration device provided in the hall of each floor, and 12 is a car call registration device provided in the car. , 13 is a car position detection device for detecting the elevator car position, 1
4 is a load detection device that detects the load state inside the car.

Reference numeral 15 is an elevator operation control device consisting of a microcomputer, etc., which determines the direction of car operation and the next floor to stop based on the presence or absence of a hall call or car call and the current car position. In addition to the well-known function of determining whether the car is at the full level based on the load condition, it also detects the presence or absence of a ball call in the same direction as the driving direction at the front of the car, and if so, sets the full level. It has the ability to change.

These functions are incorporated into the elevator control program and stored in the ROM of the microcomputer, but only the portions related to the present invention are shown in the flowchart of FIG.

In FIG. 2, P1 to P12 indicate each procedure.

First, when the car stops at an arbitrary floor in response to a hall call (or even before it stops, such as at the start of deceleration), the process starts (procedure P1). In addition,
This program does not start when stopping in response to only car calls. Then, it is determined whether there is a hall call in the same direction as the car driving direction in front of that floor (Step P2), and if not, the fullness level is set to the rated load value (Step P6), and as many people as possible are will be able to board from that floor.

If there is a hall call in the same direction, the process advances to step P3, and it is determined whether or not there is a car call before the next hall call. If there is no car call on the way, the full level is 70% of the rated load.
(Step P4), and if there is a car call on the way, the fullness level is set to 80% of the rated load (Step P5). Here, setting the occupancy level to a value lower than the rated capacity is because only that floor is not full;
This is to ensure that waiting passengers can board from the next floor where the car has stopped, but the reason why the setting value is changed depending on whether or not there is a car call on the intermediate floor is that when the car stops due to a car call, passengers who get off must always get on the car. This is because there is a possibility that an extra number of waiting customers can board the car at the next hall call stop floor.Therefore, it is not necessary to change the set value depending on whether or not there is a car call on the intermediate floor.

Next, compare the occupancy level with the current load (step P7), and if the occupancy level is smaller than the current load, raise the occupancy level by one step (step P8), compare it again with the current load, and if the occupancy level is larger, the door (Step P9). The reason why steps P7 and P8 are provided here is that, for example, the rated load of 70
Even if % or more passengers are on board, if the fullness level is set to 70% of the rated load in step P4 and the door is opened,
Not only will new passengers not be able to board the train, but the train may become overloaded and cannot depart until several passengers get off.

Next, when passengers have boarded and alighted and the doors have been opened to depart (procedure P10), the fullness level is returned to the rated load value (procedure P11). If this is not done, and the level of occupancy remains low, there is a risk that the next floor to be stopped will be filled with passengers. Thereafter, the above operation is repeated every time the machine stops in response to a hall call (P12).

According to the present invention, when stopping at a certain floor in response to a hall call, if there is a hall call in the same direction as the car driving direction ahead of that floor, the fullness level is set to be lower than the rated load. Therefore, that floor is considered full with fewer passengers than the actual capacity, and the fullness level is restored after departure, so waiting passengers can be boarded on the next hall call floor without passing through the hall full.

FIG. 5 is a diagram corresponding to FIG. 3 showing the occurrence of waiting customers and the operation of the elevator when the present invention is applied. Here, the time interval between waiting customers is exactly the same as in the case of FIG. 3, and ▽○◎ also represents the same meaning as in the case of FIG. L ₂ is the car operation diagram at this time.

In FIG. 5, the operation when the present invention is applied will be explained starting from the point where the car arrives at the 8th floor at time _t2 and departs with four waiting passengers on board.

The program shown in FIG. 2 starts when the car stops on the 6th floor at time _t3 in response to the hall call on the 6th floor. At this time, there is a hall call in the descending direction of the 5th floor in front, and there is no car call, so steps P2 to P2
4, the occupancy level is set to rated load x 0.7 (that is, 7 people now), and the process proceeds from step P7 to P9 to open the door. There are already 7 people waiting on the 6th floor, but since 4 people are in the car on the 8th floor, only 3 people will board from the 6th floor, leaving 4 people unloaded. After departing from the 6th floor, in order to return the crowd level to the original 10 people in step P11, the hall is stopped at time _t4 in response to the hall call on the 5th floor without passing through the hall, and at this time, the program in Figure 2 is again executed. starts. This time, since there is no hall call in the same direction ahead, the door is opened in step P6 with the full capacity level set to 10 people, which is the rated capacity. At this point, there are seven passengers in the car, so three people can board from the fifth floor, and the car departs to the first floor, leaving three passengers behind. Thereafter, the same operation is repeated, and FIG. 6 shows how the number of waiting customers changes at this time, and is a diagram corresponding to FIG. 4.

As is clear from comparing Figures 3 and 5, or Figures 4 and 6, in the past, there was almost no unloading on the 6th floor, but on the 5th floor, there were cases where the truck was full and left unloaded twice. There are many people and there is a big difference in waiting time, but according to the present invention, although the number of people left unloaded on the 6th floor increases, there are no cases where the 5th floor is full and there are no people who are left unloaded twice, and the waiting time is almost even on both floors. You can see that you can receive the following services.

In addition, although the above description was made about an individual elevator, the present invention can be similarly applied to group-controlled elevators.

Moreover, the change in the occupancy level may not be performed all the time, but only during a specific time period, or only for a predetermined number of elevators among a plurality of elevators.

〔Effect of the invention〕

According to the present invention, it is possible to equalize the service on each floor especially during traffic conditions such as during down-peak hours, and it is possible to prevent a situation where only some floors are extremely deteriorated.

Furthermore, when a group control elevator is applied, the degree of freedom of the group control algorithm is increased in combination with assignment control, making it possible to respond more flexibly to various traffic situations. In addition, it is possible to predict the passenger incidence rate for each floor and take that into consideration when setting the occupancy level, or to take into account not only the hall calls that have already occurred in the direction of travel, but also the hall calls that are expected to occur and be assigned. Alternatively, it may be possible to detect the floors where unloaded cars or fully loaded cars have actually occurred, and provide priority service to those floors.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an elevator control device to which the present invention is applied, Fig. 2 is a flowchart for explaining the present invention, and Fig. 3 shows the relationship between the occurrence of waiting customers and the operation of a conventional elevator. Figures 4a to 4c are diagrams showing changes in waiting customers in Figure 3, Figure 5
The figure is a diagram equivalent to Figure 3 showing the relationship between the occurrence of waiting customers and the operation of the elevator according to the present invention, and Figures 6 a to c are diagrams equivalent to Figure 4 showing changes in the number of waiting customers in Figure 5. . 11... Hall call registration device, 12... Car call registration device, 13... Car position detection device, 14...
... Load detection device, 15 ... Elevator operation control device, L ₁ , L ₂ ... Car operation diagram, P1 to P1
2...Each step of the flowchart.

Claims (1)

[Scope of Claims] 1. In an elevator that operates multiple floors in response to a call, when the elevator stops at an arbitrary floor in response to a hall call, an elevator in the same direction as the car driving direction is provided in front of that floor. A control method for an elevator, characterized in that the presence or absence of a hall call is detected, and if there is a hall call, the set value of the occupancy level is changed to be lower than the rated value only while the elevator is stopped at that floor.