JP2693587B2 - Elevator group management control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to elevator group management control for allocating a plurality of elevators to a plurality of landing calls, and in particular, a car becomes free. The present invention relates to an elevator group management control method for holding a free unit in a floor zone where service deterioration is expected.

(Prior Art) In recent years, when a plurality of elevators are installed side by side, in order to improve operation efficiency and service to users, an elevator that responds to a hall call on each floor is rationalized by a microcomputer or the like, And I try to allocate it promptly.

In such a group management control, recently, one having a learning function has appeared, and it is possible to measure the inter-floor traffic volume by learning data such as measurement of car call registration data when responding to each hall call in real time, measurement of loading / unloading load data, etc. It has come to be grasped and the average arrival time at each landing has been grasped.

Then, the measured data is processed for each time zone based on the measured data, the demand peculiar to each building is grasped, and the optimum number of machines when the hall call occurs is decided, when going to work, at lunch, when leaving work, etc. It was directly applied to the group management control such as the setting of, the setting of the distributed standby zone at the time of the outage, and the setting of the number of suspended units for energy saving.

(Problems to be solved by the invention) In the group management control described above, when the number of hall calls is concentrated at the time of going to work or leaving the office, so-called all hall calls peak, all cars move without interruption, so the car becomes free. No unit will occur. However, when the hall calls are not so concentrated, that is, when the hall calls are not peaking, the service level may drop despite the presence of free units. This will be described with reference to FIG.

That is, as shown in Fig. 7 (a), when A, B, and C machines are descending with car calls and assignments, respectively,
Unit D is free with people on the first floor. After a certain period of time, as shown in Fig. 7 (b), Units A, B, and C further descend, but because it is not in the distributed standby control time zone, Unit D is still in the free state. Suppose that it was as it was.

In such a case, all the units are concentrated downward, and at that time, there is a problem that a quick response cannot be made to a call generated on the upper floor, and the service level is reduced accordingly.

The present invention has been made to solve the above problems. Even if the elevator is concentrated in a certain direction, if the free number is included, the service level of the floor zone where the elevator is depopulated can be prevented from being lowered. An object of the present invention is to provide an elevator group management control method capable of controlling the elevator.

[Object of the invention]

(Means for Solving the Problem) The present invention relates to elevator group management control in which a plurality of elevators are activated on a plurality of floors, and an optimal number is selected and assigned to a generated hall call by a predetermined evaluation calculation. In the method, a step of detecting a free car with a free car, a step of calculating the relative distance between the group middle machines at the time of detecting the free machine in consideration of the direction, and a group of which the calculated relative distance is the largest Among the Units, there is a step of calculating a lower service level floor zone that is more than a certain value away from the latest group middle unit, and a step of putting a free unit on standby in the middle floor of the lower service level floor zone. It is a feature.

(Operation) In the present invention, the relative distance between the group middle units is calculated in consideration of the direction, and among the group middle units having the largest relative distance, the middle of the floor zones separated from the nearest one by a certain value or more. Since the free unit is kept on standby, it is possible to prevent the service level from deteriorating in the floor zone where the elevator is depopulated.

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

In the figure, the group management control unit 1 is a unit control unit 2-that controls the operation of each unit elevator via a high-speed transmission line 6.
Connected to 1-2-N. The group management control unit 1 and the unit control units 2-1 to 2-N are constituted by a single computer or a plurality of small computers such as microcomputers, and operate under the control of software.

In addition, the hall call input / output control unit 4 for inputting / outputting the hall call signals is provided to the hall call buttons 3 provided on each floor.
Further, the hall call input / output control unit 4 is connected to the group management control unit 1 and the unit control units 2-1 to 2-N via the low speed transmission line 7.

The high-speed transmission line 6 includes a group management control unit 1 and unit control units 2-1 to 2-2.
-N, that is, a transmission control system that mainly performs transmission between control computers in the machine room, and is connected by a high-speed and highly intelligent network. Then, the control information necessary for the group management control is provided to the group management control device 1 and each individual controller 2-1.
High-speed transfer between ~ 2-N. The low-speed transmission line 7 is a control system that mainly transmits information sent through the hoistway, such as the hall call button 3 of each hall and the monitoring board 5 of the monitoring room. Yes, since it is a long distance, it is composed of an optical cable or the like.

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 path 7. When the hall call button 3 is pressed, the hall call gate is closed and the registration lamp is closed. Is set, the optimum machine is determined based on the information of the single unit control units 2-1 to 2-N sent through the high speed transmission line 6, and a control command is given to the single unit. Then, the unit control units 2-1 to 2-N that have received the control command perform unit control using the control command as hall call information.

FIG. 2 shows the configuration of the software system of the group management control unit 1 and the individual control units 2-1 to 2-N. The software configuration is a single control function task 9 by the real-time OS 8 which is an operating system, which will be described later. It is designed to manage the group management control main function task 10, the group management control sub-function task 11 and the transmission control task 12, which are accompanied by the hall call assignment control task and the response monitor task, and are managed by the scheduler of the real-time OS 8. Tasks 9 to 12 are being activated or held. These are the individual control function tasks 9 in each of the tasks 9 to 12.
Is a core function of the unit control units 2-1 to 2-N,
It is a task for operating the individual control units 2-1 to 2-N, and has a high priority.

The group management main function task 10 is a central function of the group management control unit, and collects information data for each machine from the group management control sub-function task distributed to each unit control unit, and by performing comparison calculation, The optimum number is determined, a control command is given to the corresponding number, and the supervisory control after the passage of the hall call assignment time and the hall call button 3 are controlled.

The group management control sub-function task 11 is a function that performs information processing for each machine of the group management control unit, 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 is configured to manage the starting and ending of tasks via the high-speed transmission path 6, and the distributed processing in units of units can be performed by a command from the main function station which is a master. Then, the data is conveyed to the main functional station when the processing is completed.

The transmission control task 12 controls transmission / reception of data of the high-speed transmission line 6 and 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. The transmission control is performed by using the microprocessor 13. For example, the data link controller 14 and the hardware configured as a part for controlling the data link layer of the LAN network model layer proposed by ISO (International Organization for Standardization) and The media access controller 15 is used, and the data transmission can be performed with high intelligence. And
A configuration is adopted in which the ratio of the transmission control software managed by the microprocessor 13 to the high-speed transmission control is reduced. For example, the data link controller 14 that realizes the above-mentioned high intelligent transmission control is the Intel i82586 LSI, and the media access controller is also the Intel i82501.
Have been put to practical use, and by using this
High-speed transmission functions such as Mbit / sec can be performed relatively easily with a reduced support ratio of the microprocessor. Here, 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. The group management control main function task 10 is accompanied by a hall call assignment control task 19 and a response monitor task 20.

Here, the hall call assignment control task 19 performs a comparison calculation from the information of each car, and determines the optimum car in consideration of the overall balance including the hall calls.

The response monitor task 20 checks the service level of each floor when a free car with a free car occurs, judges whether a certain level of service is satisfied, and services the free car when the service level is low. Perform processing to move to the middle of the lowered floor.

Next, the detailed operation of the hall call response monitor task 20,
5 (a) and 5 (b) showing the traveling state of the elevator.
Referring to FIG. 6, description will be made according to the flowchart of FIG.

It is assumed that four elevators, that is, A, B, C, and D units are group-managed and controlled, and it is determined whether or not there are free units (step 101). Here, when it is determined that there is a free machine, it is determined whether or not there is a conforming demand (step 102). The conforming demand is a demand such that a free car is generated although the stopped state does not continue due to the distributed standby. The conditions for detecting this are:
When the day is divided into predetermined time zones by the learning function, the time when there is a free car is detected for each time zone, and the existing ratio of the free car to the total time is calculated, and this value is within the predetermined range. The case of is in conformity demand.

Next, when it is determined that the demand is suitable, the relative distance of the group middle units other than the free unit is calculated (step 103).
The relative distance in this case is a vector amount seen on this loop considering a loop in which the car travels from the top floor to the bottom floor and further travels from the bottom floor to the top floor. This is shown in Fig. 5 (a). When Unit D stopped in the free state on the first floor and all of Units A, B, and C were descending, it was seen from Unit C. Calculate the distance S ₁ to Unit A, the distance S ₂ to Unit B as seen from Unit A, and the distance S ₃ to Unit C as seen from Unit B, respectively.

Then, the calculated relative distances S ₁ , S ₂ , and S ₃ are sequentially compared two by two to detect the maximum value S _max of the relative distance (step 104). Here, considering an area where the maximum distance S _max (= S ₃ ) is detected, and assuming that Unit B responds to a hall call in this area, the thick line in FIG. 5 (b) It is possible to respond relatively quickly to the indicated floor x, but the floor x
On the upper floor, the response to the hall call will be delayed.
There are various ways to understand the service level. For example, the floor with lowered service level can be determined as follows.

If the distance between the bottom floor and the top floor where the car travels is f _max , the distance that the car makes one round trip is 2 × f _max . If n elevators in the group are evenly arranged within this one round trip distance, the service level will not be reduced, but the range exceeding this, that is, the area exceeding the average relative distance is the service level lowering area. Can be

Therefore, the average relative distance (2 × f _max ) / 3 of the group middle units A, B, C is calculated, and from the group middle unit B as a starting point, the floor x almost equal to the average relative distance is examined, and this floor The upper floor including x, that is, the floor zone where S _max − (2 × f _max ) / 3> 0 is calculated (step 105). Then, it is determined whether or not the service is deteriorated due to a hall call that may occur on the floor (step 106).

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

Next, a command to output the free D car to the intermediate floor f _m of the calculated service deterioration area f _i is output (step 108).

In this way, if by waiting the D Unit to the intermediate floor f _m of degraded areas f _i, the degraded area f _i
Even if a call occurs on any floor of the throat, an extremely quick response is possible as compared with the state shown in FIG. 5 (a).

In the above embodiment, the stop state is not continued due to the normal distributed standby, but on the assumption that there is a demand such that a free car is generated, the control to put the free unit on standby in the middle floor f _m of the service deterioration area f _i is performed. However, the deviation of the service level may be detected, and the above control may be appropriately performed according to the magnitude of the deviation.

Further, in the above-mentioned embodiment, the floor exceeding the average relative distance was defined as the service-decreasing floor, but instead of this, among the group middle units having the largest relative distance, the floor separated by a certain value or more from the nearest group middle unit. Even if the zone is determined to be the low service level, it is possible to supplement the low service level as described above.

〔The invention's effect〕

As is clear from the above description, according to the present invention, a plurality of elevators are commissioned on a plurality of floors, and a group of elevators that selects and allocates an optimum number machine by a predetermined evaluation calculation for a generated hall call. In the management control, there is an effect that it is possible to surely prevent the service level from being lowered in the floor zone where the elevator is depopulated due to the uneven service.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an apparatus for carrying out the present invention, FIG. 2 is a block diagram showing a software system of the apparatus, FIG. 3 is a block diagram showing a transmission system of the apparatus, and FIG. 5 is a block diagram showing a detailed configuration of a main part of the apparatus, FIGS. 5 (a) and 5 (b) are layout diagrams of an elevator for explaining the detailed operation of the main element, and FIG. FIG. 7 is a flow chart for explaining the detailed operation of the section, and FIGS. 7 (a) and 7 (b) are elevator arrangement state diagrams for explaining the conventional elevator group management control method. 1 ... Group management control unit, 2-1 to 2-N ... Single control unit, 3 ...
Hall call button, 4 ... Hall call input / output control section, 8 ... Real-time OS, 9 ... Standalone control function task, 10 ... Group management control main function task, 11 ... Group management control section sub-function task, 12 ...... Transmission control task, 19 …… Hall call assignment control task, 20 …… Response monitor task.

Claims (1)

(57) [Claims] 1. An elevator group management control method in which a plurality of elevators are commissioned on a plurality of floors, and an optimal number is selected and assigned to a generated hall call by a predetermined evaluation calculation. The free group, the step of calculating the relative distance between the group middle units when the free unit is detected in consideration of the direction, and the group that has the largest calculated relative distance An elevator having a step of calculating a service level lowering floor zone separated from the middle unit by a predetermined value or more; and a step of waiting the free unit on an intermediate floor of the service level lowering floor zone. Group management control method.