JPH0789678A - Group control device for elevator - Google Patents

Abstract

PURPOSE:To improve the transport faculty by securing the uniform arrival interval to a standard floor by setting the call back timing to a standard floor for a vacant car, in preference in the up peak time. CONSTITUTION:When the up peak is detected by an up peak detecting means 10B, a call back objective car selecting means 10D selects a car which completes service for all the calls. A call back time point calculating means 10E calculates the call back time point so that a call back objective car arrives at a standard floor at the ideal arrival time point, and at that time, a call back instruction output means 10F outputs a call back instruction. When a descent direction landing call generates, and an allotting means 10C performs allotment to the call back objective car, if the arrival time point at a standard floor becomes late from the ideal arrival time point, the call is allotted to the next call back objective car.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator group control system, and is particularly effective during up-peak hours, such as during office work hours in the morning.

[0002]

2. Description of the Related Art Since many passengers are generated on a standard floor (generally the first floor) during up-peak hours such as going to work in the morning,
When normal allocation control is performed, there is a situation in which there is a leftover product on the standard floor, but on the upper floor, all calls are terminated and the abandoned car is playing, The waiting time of passengers on the standard floor is significantly deteriorated.

For this reason, conventionally, when it is detected that it is during the morning work hours or when the car is in an uppeak state, the operation pattern is switched to the uppeak time, and the car which has finished the service by responding to all calls is forced. There is a standard floor recall operation that calls back to the standard floor.

[0004]

However, if the cars that have finished the service for all calls are simply returned to the standard floor, the cars will be in a dumpling state as shown in FIG. FIG. 5 is an example of an operation diagram of each car when four cars are in service in the building on the 10th floor. As shown in this FIG. 5, simply returning the car that has finished the service to the standard floor,
After the cars arrive one after another, passengers get in, and those cars depart, a dumpling condition occurs in which the next car does not come easily.

In this dumpling state, there are cases where many passengers are on board and there are not many passengers on board, and there is a large variation in the arrival intervals of the cars. The improvement is not very effective. In the example of FIG. 5, the passengers arriving at the hall immediately after the car of the fourth car departs will be annoyed for a considerably long time.

Therefore, it is conceivable to control the timing of giving the recall command so that the recall cars arrive at the reference floor at equal intervals. When a landing call in the descending direction occurs, the arrival at the standard floor is significantly delayed in response to it, and it was very difficult to make the arrival at the standard floor at equal intervals.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is characterized in that a car that responds to all calls at the time of uppeak and terminates service is recalled. Means for selecting as a target car, means for calculating the call-back time of the car to be recalled from the time required for the car to be recalled to return to the reference floor and the ideal arrival time at the reference floor, and the time at the call-back time Then, if a means for outputting a recall command to the recall target car and a newly generated descending hall call are assigned to the recalling target car and the arrival at the reference floor is delayed from the ideal arrival time, the descending hall call is called. And a means for assigning the car to the next recall target.

[0008]

In the present invention, the call back timing to the standard floor is given the highest priority, and if the arrival at the standard floor is delayed if a descending hall call that occurs on the way is delayed, the hall call is assigned to the next call-back target car. The call-back time of the assigned car is determined including the time to respond to the hall call.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Here, for convenience, the case where the elevators of Nos. 1 to 4 are group-controlled will be described, but it goes without saying that the present invention can be applied regardless of the number of elevators and the number of floors.

FIG. 1 is an overall configuration diagram of the present invention, which comprises a group management device 10 and operation control devices 11 to 14 (partially omitted) for the first to fourth units controlled by the group management device 10. In FIG. 1, 10A is a hall call registration means for registering a hall call for each floor, and 10B is an increase from the transition of the call generation status on the standard floor or waiting passengers, the load status of the car when the standard floor departs, etc. Means for detecting a peak, 10C selects and allocates an optimum car from a plurality of cars for a newly generated hall call, and allocates a newly generated descending hall call to a recall target car during uppeak When the arrival at the reference floor is delayed from the ideal arrival time, the descending hall call is assigned to the next call-back target car.

Further, 10D is a call-back target car selecting means for ending the service for all the landing calls and car calls that the own machine is in charge and selecting the car in the standby state as a call-back target car. 10E is a call-back target. A means for calculating the recall time of the car to be recalled from the time required for the car to return to the standard floor and the ideal arrival time to the standard floor. Is a means for outputting a recall command.

11A is an assigned hall call registration means for registering a hall call assigned to the first car, 11B is a car call registration means for registering a car call, and 11C is a control for lighting a hall lantern provided at a hall on each floor. An informing device control means 11D is a driving control means for controlling basic operations such as running, stopping, and driving direction of the car according to the car position in order to respond to a car call, an assigned hall call, or a call back command. , 11E are door control means for controlling the opening and closing of the door, and each means in these operation control devices 11 is well known. The operation control devices 12 to 14 (not shown) for the No. 2 to No. 4 units are also configured similarly to those for the No. 1 unit.

FIG. 2 is a block circuit diagram of the group management device 10. The group management device 10 is composed of a microcomputer, and has a CPU 21, a ROM 22, a RAM 23, and an input circuit 2.
4 and an output circuit 25. The input circuit 24 has a hall call signal 26 from a hall call button (not shown) on each floor,
And the status signals (car position, driving direction, presence / absence of a car call, etc.) of each unit from the operation control devices 11 to 14 are input, and the output circuit 25 outputs a signal to the hall call registration light built in each hall call button. Response signal 27 and operation control device 11-
An allocation signal to the channel 14, a command signal for returning to the reference floor, and the like are output.

Next, the operation of the present invention having the above construction will be described with reference to FIGS. FIG. 3 is a flow chart showing a part of processing relating to call back to the standard floor according to the present invention in the main program of group management control, and FIG. 4 is a diagram showing an example of operation lines of each car for explaining the present invention. is there. The flowchart of FIG. 3 will be described below based on the operation example of FIG.

First, in step S1, it is determined whether or not the present time is in an up peak state. This is, for example, by detecting the number of hall calls generated at the standard floor every predetermined time, or by providing a waiting passenger number detection device at the hall of the standard floor, from the occurrence situation, or at the time of departure from the standard floor of each car. It can be easily judged from the load situation in the car in the. As a result, when it is not during the up-peak time, the routine proceeds to return, and the normal group management operation is performed.

In the case of up-peak, it is determined whether or not there is a call-back target car, that is, a car that has finished the service and is on standby for all calls handled by its own machine.
Judge with 2. If the car to be recalled does not exist, proceed to return again and perform normal group management control.
When there is a car to be recalled, the time t _i at the ideal arrival of the car (i.e., car) to the reference floor is calculated by the following formula. t _i = t _a + ΔT

Here, t _a is the arrival time of the car that arrived at the reference floor immediately before, and ΔT is the ideal arrival interval at the reference floor. This ideal arrival interval ΔT is obtained in advance by dividing the average one lap time from the standard floor to the standard floor of each car by the number of cars, and the average one lap time can be obtained by actual measurement or calculation. Alternatively, the average arrival interval to the reference floor may be obtained by actual measurement, and this may be set as ΔT.

In FIG. 4, assuming that the first car has become the car to be recalled, its ideal arrival time t ₁ can be obtained by adding ΔT to the arrival time t _a of the second car. If there are a plurality of cars to be recalled in step S2, the time t _i is calculated in step S3 for the car that was the recall target first.

Next, in step S4, it is determined whether or not a new hall call in the descending direction is newly generated. If not, it is determined in step S5 whether or not a recall command is output to the car to be recalled. To do. If the recall command is not yet issued, the time T _i required for the recall target car (i.e., the number i) to return to the reference floor is calculated in step S6,
In step S7, it is determined whether or not the current time t ₀ has reached the time t _i −T _i .

In the example of FIG. 4, assuming that the time required for Unit 1 to return from the standby floor to the reference floor is T ₁ , whether or not the present time t ₀ has reached t ₁ -T ₁ in step S7. Is determined, and if not, the process returns to step S4. Then, steps S4 to S7 are repeated, and the present time t ₀ is t ₁ −T
_At the time point of 1, the recall command is output to the first vehicle in step S8, and the process returns to step S4.

After that, steps S4, S5 and S9 are repeated. If no new hall call is generated on the way, the first car arrives at the standard floor at time t ₁ and ends. As shown in FIG. 4, if a new descending hall call H ₁ is generated during the call-back operation, the process proceeds from step S4 to S10, and the time required to return to the reference floor in response to the hall call. T _i is calculated, and further step S1
At 1, it is determined whether or not t ₀ + T _i ≤t _i , that is, whether or not the call can be allocated to the _i-th vehicle at the ideal arrival time t _i at the reference floor.

In FIG. 4, if the hall call is generated while Unit 1 is on standby and the call is answered, the ideal arrival time t ₁
If it is in time, the call is 1 in step S12.
Although it is assigned to the car No., when it responds to the call generated during the call-back operation as shown in FIG. 4, it is naturally impossible to arrive at time t ₁ , so the process proceeds from step S11 to step S13, and the hall call is Next, it is assigned to the car to be recalled.

[0023] Accordingly Unit 1 returns to a standard floor at time t ₁ without responding to hall calls H _1, whereas hall call H ₁ is assigned to the second car at the time the No. 2 was the recalled target car. As a result, for Unit 2, the ideal arrival time t ₂ is calculated in step S3, and then the time T ₂ required for the return including the response to the hall call H ₁ is produced in step S6. t and willing recall command ₂ -T from the step S7 becomes the point of ₂ to S8 is outputted, also returns to the standard floor ideal arrival time t ₂ 2 Unit.

If a new descending hall call occurs during this time, it is determined whether or not it is possible to return to the standard floor at the ideal arrival time t ₂ even if Unit 2 responds to this call in the same manner as above. If it is possible, the call is assigned to the second car, and if it is not possible, the call is assigned to the car to be recalled next.

[0025]

According to the present invention, since the timing for returning to the reference floor is given the highest priority, it is assumed that a descending hall call is generated while waiting for the car to be recalled or during the recall operation. However, without being affected by the call, each car can return to the standard floor at an ideal time interval, preventing dumpling operation and maximizing transport capacity during up-peak hours.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block circuit diagram of a group management device.

FIG. 3 is a flowchart showing a procedure of a call back process to the reference floor according to the present invention.

FIG. 4 is a diagram showing an example of an operation line of each car for explaining the present invention.

FIG. 5 is a diagram showing an example of an operation line of each car under conventional group management control.

[Explanation of symbols]

 10 group management device 10A hall call registration means 10B up-peak detection means 10C allocation means 10D call-back candidate car selection means 10E call-back time point calculation means 10F call-back command output means 11-14 operation control device for Units 1 to 4

Claims (1)

[Claims] 1. A plurality of elevators are commissioned to a plurality of floors, an optimum car is assigned to a common hall call for these plurality of elevators, and a standard floor call-back operation is performed during uppeak. In the elevator group management device, a means for selecting a car that has responded to all calls and ended the service as a recall target car at the time of uppeak, and a time and a standard floor required for the recall target car to return to the standard floor Means for calculating the recall time of the car to be recalled from the ideal arrival time to the car, means for outputting a recall command to the car for recall at the time when the time is the recall time, and recalling the newly generated descending hall call When the car is assigned to the target car and the arrival at the reference floor is delayed from the ideal arrival time, the descending hall call is called the next call. And a means for allocating to the car to be returned.