JPH0351271A - Group-control method for elevator - Google Patents

Abstract

PURPOSE:To prevent a floor zone waiting an elevator from lowering in service level by operating relative distances among numbered machines in a group at a time of detecting a free numbered machine in adding directions thereof, operating a floor zone apart over a fixed distance from the nearest numbered machine in the group out of the largest relative distance numbered machines in the group, and making the free numbered machine wait at the midway floor of the floor zone. CONSTITUTION:Relative distances S1, S2, S3 among numbered machines A, B, C in a group are operated in adding directions thereof. Next, a free numbered machine D is made to wait at the midway floor fm of a floor zone apart over a fixed distance from the nearest one out of numbered machines B having the largest one of these relative distances. It is possible thereby to prevent a floor zone having become overstranged with an elevator from lowering in service level.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) This invention relates to group management control of elevators that allocates a plurality of elevators to a plurality of hall calls. The present invention relates to a group management control method for elevators in which free cars are placed on standby in floor zones where service deterioration is expected.

(Prior art) In recent years, when multiple elevators are installed in parallel, in order to improve operating efficiency and improve service to users, the elevators that respond to hall calls on each floor have been developed to be streamlined using microcomputers, etc. And we are trying to allocate it promptly.

Recently, in such group management control, models with a learning function have been introduced, and inter-floor traffic volume can be measured based on learning data, such as measuring car call registration data when responding to each landing call in real time, and measuring boarding and alighting load data. It has become possible to understand the average time between arrivals at each boarding point.

Then, based on the measurement data, the measurement data is processed for each time period to understand the unique demand of each building, determine the optimal number of machines when a hall call occurs, dispatch time, lunch time, clock-out time, etc. It was directly applied to group management control, such as setting of parking spaces, setting of distributed standby zones during off-peak hours, and setting of the number of idle machines to save energy.

(Problem to be solved by the invention) In the above-mentioned group management control, all cars are operated without interruption during the so-called peak of landing calls, such as when dispatching or leaving work, when the number of landing calls is concentrated. Unit number does not occur. However, the number of boarding calls is not that concentrated.
During so-called non-peak periods of hall calls, the service level may drop despite the presence of free cars.

This will be explained using FIG. 7.

That is, as shown in FIG. 7(a), while Cars A and BC are descending after passing their car call quotas by 1jj, Car D has unloaded passengers on the first floor and is free. As this has passed for a certain period of time, Fig. 7(b)
As shown in the figure, Units A, B, and C descend further, but
Assume that machine D is still in a free state because it is not the distributed standby control time period.

In such a case, the entire number of machines would be concentrated in the lower floor, making it impossible to quickly respond to calls occurring on the upper floors, resulting in a corresponding drop in service level.

This invention was made to solve the above problem, and even if elevators are concentrated in a certain direction, if free elevators are included, the service level will not deteriorate in the floor zone where elevators are depopulated. The purpose of this study is to present a group management control method for elevators that can be used to control elevators.

[Purpose of the invention]

(Means for Solving the Problems) This invention puts a plurality of elevators into service on a plurality of floors, and selects and assigns an optimal number of elevators by calculating a predetermined J/r value for a landing call that occurs. In the group management control method, the free car whose car has become free is pushed out, the relative distance between the middle cars of the group at the time of detection of this free car is calculated by e4, taking into account the direction, and the middle car of the group with the largest relative distance is selected. The method is characterized in that a floor zone that is more than a certain value apart from the nearest middle car in the group is calculated, and the free car is made to stand by on the middle floor of this floor zone.

(Function) In this invention, the relative distance between the middle units in a group is calculated by taking the direction into account, and among the middle units in the group with the largest relative distance, floors that are more than a certain value away from the nearest one Since the free machine is placed on standby in the middle of the zone, it is possible to prevent a drop in service water in floor zones where elevators are underpopulated.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an apparatus for implementing the present invention.

In the figure, a group management control section 1 is connected to a single control section 2--which controls the operation of each single elevator via a high-speed transmission line 6.
1 to 2-N. These group management control units
The individual controllers 2-1 to 2-N are composed of one or more small computers such as microcomputers, and operate under the control of software.

Further, a hall call input/output control section 4 that inputs and outputs a hall call signal is connected to the hall call button 3 provided on each floor, and the hall call input/output control section 4 also connects a low-speed transmission line 7. It is connected to the group management control section 1 and the individual control sections 2-1 to 2N through the control section 1.

The high-speed transmission line 6 connects the group management control section 1 and the individual control sections 2-1 to 2-1.
This is a transmission control system that performs transmission between 2-N, that is, mainly between control computers in the machine room, and is connected by a high-speed, highly intelligent network. Control information necessary for group management control is exchanged at high speed between the detailed management control device 1 and each of the individual control units 2-1 to 2-N. The low-speed transmission line 7 is a control system that mainly transmits information sent via the hoistway, such as the hall call button 3 of each landing and the monitoring panel 5 of the monitoring room, and is slower than the high-speed transmission line 6. Because it is long distance, it is constructed using optical cables.

When the group management control unit 1 is normal, the hall call button 3 is controlled by the group management control unit 1 via the low-speed transmission line 7, and when the hall call button 3 is pressed, the hall call button is closed and the registration lamp is turned on. is set and sent via high-speed transmission line 6! 1' The optimum machine is determined based on the information of the L body control units 2-1 to 2-H, and a control command is given to that single body. Then, the single control units 2-1 to 2-N that received the control command,
Single unit control is performed using this control command as hall call information.

FIG. 2 shows the group management control section 1 and the individual control sections 21 to 2-N.
This shows the configuration of the software system.The IM configuration of the software is based on the real-time O88, which is the operating system, and the group management control main function that includes the standalone control function task 9, the hall call assignment control task and the response monitor task, which will be described later. It manages task 10, group management control subfunction task 11, and transmission control task 12, and tasks 9 to 12 are activated or held by the scheduler in real time O8. These single control function tasks 9 in each of the tasks 9 to 12 are the ilX body control units 2-1 to 2-N.
This is a function that causes coughing in the unit controllers 2-1 to 2-.
This is a task for operating N, and is given a high priority.

The group management main function task 10 is the central function of the group management control unit, and collects information data for each machine from the group management control subfunction tasks distributed in each individual control unit, and performs comparative calculations. The optimal car number is determined and a control command is given to the corresponding car, and the supervisory control and the hall call button 3 are controlled after the hall call allocation time has elapsed.

The group management control sub-function task 11 is a function for processing information for each machine of the group management control section, and processes information under the control of the group management control main function task 10.

That is, the computer having the group management control main function manages the start and end of tasks via the high-speed transmission line 6, and the Qi IM of the machine is controlled by instructions from the main function station, which is a mask.

The configuration is such that distributed processing is performed, and data is transferred to the main function station upon completion of the processing.

The transmission control task 12 controls the transmission and reception of data on the high-speed transmission line 6 and the activation and termination of the group management control subfunction task 11.

FIG. 3 is a block diagram showing the system configuration of the high-speed transmission line 6 of FIG. 1. Transmission control is performed using the microprocessor 13, but for example, the data link controller 14 and media·
An access controller 15 is used, and the configuration is such that data transmission can be performed in a highly intelligent manner.

A microprocessor 13 is used for long-distance transmission control.
A configuration is adopted that reduces the proportion of transmission control software managed by the system. For example, the data link controller 14 that realizes the above-mentioned highly intelligent transmission control is the +825 LSI manufactured by Intel (INTE+).
86 has also been put into practical use as a media access controller, such as Intel's 182501, and by using this, high-speed transmission functions such as IOM bits/second can be achieved with a reduced support ratio of the microprocessor. It is relatively easy to do. Note that 16 is a system bus, 17 is a control line, and 18 is a serial transmission system.

FIG. 4 shows the control function section of the group management control main function task 10.
is accompanied by one hall call assignment control task and a response monitor task 20.

Here, the hall call allocation control task 19 performs a comparative calculation based on the information of each car, takes into consideration the overall balance including hall calls, and determines the optimal car.

The response monitor task 20 checks the service water on each floor when a free car occurs in a free car state, determines whether a certain service level is met, and if the service level is low, services the free car. Perform the process of moving it to the middle of the lowered floor.

Next, the detailed operation of the hall call response monitor task 20 is as follows.
Figures 5 (a) and (b) showing the running state of the elevator.
This will be explained with reference to the flowchart of FIG.

4 elevators namely A, B, C, D
It is assumed that the number cars are group management controlled, and it is determined whether there is a free number car among them (step 101). here,
If it is determined that there is a free car, it is determined whether the demand is compatible (step 102). This conforming demand is
Distributed standby does not result in a continuous stoppage, but it refers to demand to the extent that there are free baskets. The condition for detecting this is that when 1[1 is divided into predetermined time periods, the learning function detects the time when a free car exists in each time period, and calculates the existence ratio of the free car to the total time. If this value is within a predetermined range, it is considered a compatible demand.

Next, if it is determined that the demand is compatible, the relative distances of the middle cars in the group other than the free car are calculated (step 103).

The relative distance in this case is a vector quantity seen on this loop, considering a loop in which the car runs from the second upper floor to the second lower floor, and then from the second lower floor to the second upper floor. Figure 5 (a) shows this. When Unit D is free and stopped on the first floor, and Unit Units A, B, and C in the group are all descending, the view from Unit C is as follows. Distance S1 to Unit A,
The distance S2 from the A car to the B car and the distance s3 from the B car to the C car are calculated.

Next, the calculated relative distances s1, s2, and s3 are compared two by two in order to detect the maximum value S of the relative distances (
Step 104). Here, the detected area of flaX maximum distance S (-33) is 11
8X If we assume that the B-car responds to a landing call in this area with λ=), it will be possible to respond relatively quickly up to floor X shown by the thick line in Figure 5(b). On floors above floor X, the response to the hall call is delayed. There are various ways of understanding service level, for example:
The service level degradation floor can be determined as follows.

Assuming that the distance between the lower floor and the upper floor where the car travels is 1, the distance that the car travels one round trip is 2Xf. If n high-speed elevators are evenly distributed during this one round trip distance, there will be no drop in the service level, but beyond this, i.e.
The area where the average relative distance is exceeded can be defined as the area where the service level is lowered.

Therefore, the average relative distance (2Xf
)/3, set the group middle unit B as the starting point 1aX, check the floor X that is approximately equal to the average relative distance, and calculate the floors above including this floor X, that is, S□, (2 x
)/3>0 (step 10)
5). Then, it is determined whether or not the possibility of a hall call occurring on the floor causes a service failure (step 106).
).

In this way, when it is determined that there are floors with degraded service, these floors are converted to floors that do not include directions, and the intermediate floor f of the floor with degraded service f is calculated (step 107 ).

Next, the free car D is placed on standby on the intermediate floor f of the calculated service degradation area f.
A command to Il+ is output (step 108).

In this way, the intermediate floor f of the degraded service area f,
If the D unit is kept on standby in the service deterioration area f, even if the call occurs on any floor, it will be able to respond extremely quickly compared to the situation shown in Figure 5(a). It becomes possible.

In the above embodiment, the stopped state is not continued due to normal distributed waiting, but the free car is controlled to be on standby at the intermediate floor fI11 of the service degraded area f1 on the premise that π is required to the extent that a free car occurs. However, it is also possible to detect a bias in the service level and perform the above-mentioned control as appropriate depending on the magnitude of the bias.

In addition, in the above embodiment, the floor exceeding the average relative distance is designated as the floor with reduced service, or instead, the floor that is more than a certain value away from the nearest 1 Yosei unit among the middle unit units in the group with the largest relative distance. Even if the floor zone is set to a floor with lower service level, it is possible to compensate for the lower service level in the same manner as described above.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, a plurality of elevators are put into service on a plurality of floors, and an optimal elevator is selected and assigned to a group of elevators based on a predetermined evaluation calculation in response to a hall call that occurs. In management control, there is an effect in that it is possible to reliably prevent a drop in the service level of elevators or depopulated floor zones due to unbalanced services.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a device that implements the present invention, FIG. 2 is a block diagram showing a software system of the device, FIG. 3 is a block diagram showing a transmission system of the device, and FIG. A block diagram showing the detailed configuration of the main parts of the device, FIGS. 5(a) and 5(b) are layout diagrams of the elevator to explain the detailed operation of the main elements, and FIG. 6 is a block diagram showing the detailed structure of the main parts. FIGS. 7(a) and 7(b) are flowcharts for explaining the detailed operation of the elevators. 1... Group management control unit, 2-1 to 2-N... Single control unit, 3... Hall call button, 4... Hall call input/output control unit, 8... Real-time O3, 9 ...Single control function task, 10...Group management control main function task, 1
1... Group management control sub-function task, 12... Transmission control task, 19... Hall call assignment control task, 20...
-Response monitor task.

Claims (1)

[Claims] In an elevator group management control method in which multiple elevators are put into service on multiple floors and the optimal elevator is selected and assigned using a predetermined evaluation calculation for each hall call that occurs, a free elevator with a free car is detected. Then, the relative distance between the group middle machines at the time of this free machine detection is calculated taking into account the direction, and among the group middle machines with the largest relative distance, the floor zone that is more than a certain value away from the nearest group middle machine A method for group management and control of an elevator, characterized in that the above-mentioned free car is made to stand by at an intermediate floor of this floor zone.