JP2016013877A - Control system for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system for an elevator capable of reducing noise and vibration of an elevator by taking a speed difference at passing of the elevator into consideration.SOLUTION: A control system for an elevator includes a group management control unit 24 which has a parameter setting unit 12, an estimated arrival time calculation unit 14, a passing estimation detection unit 15, a speed difference calculation unit 16 and a departure suppression management unit 17, and which receives a position, a speed and a travelling direction of the elevator at each time from the elevator as operation information. The parameter setting unit 12 stores a speed pattern of the elevator, a regulated speed difference and priority of the elevator. The estimated arrival time calculation unit 14 calculates estimated arrival time of the elevator to the next stop floor. The passing estimation detection unit 15 acquires whether or not passing occurs between elevators, passing time and a passing position. The passing speed difference calculation unit 16 acquires the passing speed difference between the elevators. The departure suppression management unit 17 delays the departure of the elevator with low priority, in the case where the passing speed difference is larger than the regulated speed difference.

Description

  The present invention relates to an elevator control system, and more particularly to an operation control system for a plurality of elevators provided in the same hoistway.

  With recent technological developments and higher building heights, the rated speed of elevators has been increased. However, in skyscrapers and complex facilities, the number of elevators to be installed increases. Therefore, not all elevators are accelerated in consideration of cost and energy consumption. Therefore, the elevators installed in the building do not always have the same rated speed.

  In addition, when multiple elevators are installed in a building, if the hoistway of each elevator is enclosed by a wall or the like and a hoistway is provided for each elevator, wind noise and vibration due to the vertical movement of the elevator may increase. . For this reason, when installing a plurality of elevators in a building, in order to escape the wind generated by the vertical movement of the elevator, do not enclose the hoistway of each elevator with a wall or the like (that is, one hoistway) It is often the case that a plurality of elevators are arranged in the elevator and the elevators are not separated by walls or the like. However, the higher the speed of the elevator, the greater the noise and vibration when the elevators run parallel or pass in one hoistway or when the elevators are moving in opposite directions. For this reason, when installing a plurality of elevators in the same hoistway, it is necessary to take measures against noise and vibration.

  Patent Document 1 describes an elevator group management control device that prevents rolling due to wind pressure when an elevator passes by as a countermeasure against noise and vibration. When the elevator group management control device described in Patent Document 1 detects in advance that a car adjacent to this car passes at a specified speed in a state where passengers are in the car, at least based on the time until the car passes, One car is run at a speed lower than the specified speed.

  Patent Document 2 describes an elevator control device that prevents an increase in wind noise generated by traveling of two cars. The elevator control device described in Patent Document 2 is provided with two elevators with different rated speeds in the same hoistway, and when the high-speed car overtakes the low-speed car, the speed of the low-speed car is reduced. Thus, the time for the two cars to run side by side is shortened to prevent an increase in wind noise caused by the parallel running of the two cars.

  Patent Document 3 describes an elevator operating device that prevents one of the cars arranged in the same hoistway from starting in order to prevent the generation of wind noise. In the elevator driving device described in Patent Document 3, when the time difference until the departure of the parallel-installed cars is less than a predetermined value and the traveling direction is the same direction, the front car and the rear car in this order. A departure order is determined, and a car that prevents departure is set based on the departure order.

JP 2003-73042 A JP-A-53-73754 JP-A-7-97149

  When multiple elevator (car) hoistways with different rated speeds are installed without being separated by walls, etc. (that is, when multiple elevators with different rated speeds are installed in the same hoistway) However, there is a problem that noise and vibration of the elevator increase if the speed difference when an elevator with a high rated speed passes an elevator with a low rated speed is large. Such noise and vibration will increase as the rated speed of the elevator increases, but the conventional technology does not consider the speed difference when overtaking the elevator to reduce the noise and vibration. The above problems have not been solved. Further, as a method of reducing the noise and vibration of the elevator, it is not preferable to reduce the speed of the car as in Patent Document 2, for example, in a high-speed elevator with an increased rated speed. This is not preferable from the viewpoint of increasing energy consumption.

  An object of the present invention is to provide an elevator control system capable of reducing the noise and vibration of an elevator in consideration of a speed difference during overtaking of the elevator.

  The elevator control system according to the present invention has the following features. In an elevator control system for an elevator apparatus in which a plurality of elevators with different rated speeds are installed in the same hoistway, a parameter setting unit, an estimated arrival time calculation unit, an overtaking prediction detection unit, and an overtaking speed difference calculation unit And a departure suppression management unit, and a group management control unit that receives the position, speed, and traveling direction of the elevator at each time as operation information from the elevator. The parameter setting unit stores a speed pattern in which a relationship between the travel time and speed of the elevator is predetermined, a predetermined speed difference, and a departure priority set in the elevator. The predicted arrival time calculation unit calculates a predicted arrival time for the next stop floor of the elevator using the operation information and the speed pattern. The overtaking prediction detection unit obtains whether or not overtaking occurs between the elevators in the same hoistway using the estimated arrival time, the operation information, and the speed pattern, and when overtaking occurs. Finds the time when overtaking occurs and the position where overtaking occurs. The overtaking speed difference calculation unit uses the time at which the overtaking occurs, the operation information, and the speed pattern to calculate a difference in speed at the time at which the overtaking occurs between the elevators where overtaking occurs. Asking. When the overtaking speed difference is larger than the specified speed difference, the departure suppression management unit delays the departure of the elevator having a low starting priority among the elevators in which overtaking occurs.

  The elevator control system according to the present invention can reduce the noise and vibration of the elevator in consideration of the speed difference during overtaking of the elevator.

It is a figure which shows an elevator and its stop floor typically. It is a block diagram which shows schematic structure of the control system of the elevator by the Example of this invention. It is a figure which shows an example of the speed pattern of an elevator typically. It is a flowchart of the process which the control system of the elevator by a present Example calculates | requires whether overtaking occurs, and calculates | requires departure suppression time. In the elevator control system according to the present embodiment, it is a flowchart of a process for obtaining a departure suppression time such that the overtaking speed difference is equal to or less than a specified speed difference by predetermining the overtaking prohibited section.

  The elevator control system according to the present invention includes an elevator apparatus in which hoistways of a plurality of elevators (cars) having different rated speeds are provided without being separated by walls or the like (that is, a plurality of elevators having different rated speeds in the same hoistway). Elevator with a higher rated speed in an elevator system with one elevator installed) suppresses (delays) the departure of one elevator so that an elevator with a lower rated speed does not pass an elevator with a lower rated speed beyond a predetermined specified speed difference ) Is the main feature.

  In the elevator control system according to the present invention, when overtaking occurs between two elevators, the overtaking speed difference (the difference between the speeds when one elevator overtakes the other elevator) is greater than the specified speed difference. Therefore, there is an advantage that it is possible to prevent noise and vibration caused by passing an elevator (car).

  Further, since the departure of the elevator is suppressed rather than changing the speed of the elevator, there is an advantage that noise and vibration can be reduced without increasing the speed pattern of the elevator. If the speed pattern is changed while the elevator is running, energy is consumed by sudden acceleration / deceleration. In the present invention, since the elevator speed pattern is not changed, noise and vibration can be reduced without increasing power consumption.

  Hereinafter, an elevator control system according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram schematically illustrating an elevator and its stop floor in an elevator apparatus in which a plurality of elevators having different rated speeds are installed in the same hoistway. FIG. 1 shows four elevators 1a to 1d as an example. The elevator 1a and the elevator 1b are installed in the same hoistway, and the elevator 1a and the elevator 1b are not separated by a wall or the like. Moreover, the elevator 1c and the elevator 1d are installed in the same hoistway, and the elevator 1c and the elevator 1d are not separated by a wall or the like.

Elevator 1a and 1c, the rated speed is _{V 1,} the elevator 1b and 1d are rated speed is _{V 2.} The speed V ₁ is greater than the speed V ₂ (V ₁ > V ₂ ). In other words, elevator 1a and 1c is a high-speed elevator rated speed is _{V 1,} the elevator 1b and 1d are fast elevators 1a rated speed is _{V 2,} which is slower general elevator than 1c.

  In FIG. 1, black circles indicate the stop floors of the elevators 1a to 1d. That is, the high-speed elevators 1a and 1c are stopped on the second basement floor (B2 floor), the first basement floor (B1 floor), the first floor, the 110th floor, and the 118th to 120th floors, and the general elevators 1b and 1d are on the second basement floor. (B2 floor), 1st basement (B1 floor), 1st floor, and 118-120th floor.

  The configuration illustrated in FIG. 1 is an example, and the present invention can be applied to configurations other than the configuration illustrated in FIG. 1, and the effects exhibited by the present invention can be obtained.

  FIG. 2 is a block diagram showing a schematic configuration of an elevator control system according to an embodiment of the present invention. The elevator control system according to the present invention includes high-speed elevators 1a and 1c, general elevators 1b and 1d, car control units 20a to 20d, a group management control unit 24, a hall call unit 25, and an input / output control unit 28. Prepare.

  The high-speed elevator 1a and the general elevator 1b are provided in the hoistway 26, and are not separated by a wall or the like. The high-speed elevator 1c and the general elevator 1d are provided in the hoistway 27, and are not separated by a wall or the like. The hoistway 26 and the hoistway 27 are separated by a wall or the like.

  The high speed elevator 1a is connected to a car control unit 20a that controls a car of the high speed elevator 1a. The general elevator 1b is connected to a car control unit 20b that controls a car of the general elevator 1b. The high speed elevator 1c is connected to a car control unit 20c that controls a car of the high speed elevator 1c. The general elevator 1d is connected to a car control unit 20d that controls the car of the general elevator 1d.

  The car control units 20a to 20d include car state transmission units 21a to 21d and departure suppression command units 22a to 22d, respectively, and control the elevators 1a to 1d, respectively. The car controllers 20 a to 20 d are connected to the group management controller 24 via the input / output controller 28.

  The car state transmission units 21a to 21d appropriately receive the operation information of the elevators 1a to 1d from the elevators 1a to 1d, and transmit the received operation information to the group management control unit 24 via the input / output control unit 28. The operation information includes the position of the elevator (car) at each time (position in the traveling direction), speed, traveling direction, and the like. However, the operation information is not limited to such information, but can include information other than these.

  The departure suppression command units 22a to 22d manage the function of suppressing the departure of the elevator cars 1a to 1d. When the departure suppression command units 22a to 22d receive a command (departure suppression command) for suppressing the departure of the car from the input / output control unit 28, the departure suppression command units 22a to 22d transmit the departure suppression command to the elevators 1a to 1d, and the elevators 1a to 1d Suppress (delay) the departure of the car.

  The elevators 1a to 1d that have received the departure restraining command wait for departure on the stopped floor, for example, in a door open state. While waiting, an announcement may be made to tell the user the reason for waiting. You may wait for departure in a door-closed state.

  The input / output control unit 28 connects the car control units 20a to 20d and the group management control unit 24, and transmits and receives information between them. Further, it is connected to the hall call unit 25, receives information (hall call information described later) from the hall call unit 25, and transmits this information to the car control units 20a to 20d and the group management control unit 24.

  The group management control unit 24 includes an input / output management unit 11, a parameter setting unit 12, and a departure suppression control unit 13, and includes four elevators 1a to 1d via the input / output control unit 28 and the car control units 20a to 20d. Control the navigation of

  The input / output management unit 11 connects the departure suppression control unit 13 and the input / output control unit 28, and manages input / output to the input / output control unit 28 of the group management control unit 24.

  The parameter setting unit 12 stores a specified speed difference that does not cause noise and vibration even when the car is overtaken, and information (elevator information) about the elevators 1a to 1d connected to the group management control unit 24. . The elevator information includes the number of elevators 1a to 1d connected to the group management control unit 24, the number of floors, the floor height, the journey, the installation position (which elevator is installed in the same hoistway), The speed pattern and each rated speed are included. The specified speed difference and the elevator information are set in the parameter setting unit 12 in advance. The parameter setting unit 12 transmits the stored specified speed difference and the elevator information to the departure suppression control unit 13.

  The specified speed difference is an overtaking speed difference in which noise and vibration become a problem when the overtaking speed difference of the car is larger than the specified speed difference. That is, if the overtaking speed difference of the car is equal to or less than the specified speed difference, noise and vibration are not a problem. The specified speed difference can be determined in advance by actual machine tests, simulations, and the like, and is a value that varies depending on the elevator specifications such as the hoistway structure, the car structure, and the rated speed, and the installation environment. In general, the noise in question is, for example, 45 dB in terms of sound pressure, and the vibration in question is, for example, 8 Gal. However, the value of the noise or vibration in question varies depending on the specifications of the elevator and the installation environment. .

  FIG. 3 is a diagram schematically illustrating an example of an elevator speed pattern. The speed pattern is obtained by predetermining the relationship between the travel time after departure from the departure floor of the elevator (car) and the speed for each elevator. In the speed pattern shown in FIG. 3, the elevator starts from the departure floor and accelerates to reach speed V1 after time T1, reaches the maximum speed Vmax after time T2, starts to decelerate after time T3, and starts at time T4. We arrive at the stop floor later and stop.

  The parameter setting unit 12 stores the priority of departure set for each elevator. The departure priority will be described later.

  The departure suppression control unit 13 includes an estimated arrival time calculation unit 14, an overtaking prediction detection unit 15, an overtaking speed difference calculation unit 16, and a departure suppression management unit 17, and is connected to the parameter setting unit 12 and the input / output management unit 11. . The departure suppression control unit 13 transmits / receives information to / from the input / output control unit 28 via the input / output management unit 11.

  The estimated arrival time calculation unit 14 receives the operation information transmitted from the car control units 20a to 20d via the input / output management unit 11 and the input / output control unit 28, and the elevator information stored in the parameter setting unit 12. Based on this, the estimated arrival time to the next stop floor of each car is calculated. The input / output management unit 11 transmits the information received from the input / output control unit 28 to the predicted arrival time calculation unit 14.

  The overtaking prediction detection unit 15 is based on the estimated arrival time of each car calculated by the estimated arrival time calculation unit 14, the operation information, and the elevator information stored in the parameter setting unit 12. Ask whether overtaking occurs between elevators (cars). A method for determining whether or not overtaking occurs will be described later.

  The overtaking speed difference calculation unit 16 calculates the overtaking speed difference when overtaking occurs based on the result obtained by the overtaking prediction detection unit 15, the operation information, and the elevator information. The overtaking speed difference calculation unit 16 transmits the calculated overtaking speed difference to the departure suppression management unit 17.

  The overtaking speed difference is calculated by obtaining the difference between the speed of the overtaking elevator and the overtaking elevator speed when overtaking occurs. The speed of each elevator when overtaking occurs can be calculated using the speed pattern (see FIG. 3) stored in the parameter setting unit 12. Accordingly, the overtaking speed difference is obtained by, for example, obtaining the speed at the time at which overtaking occurs for each of the overtaking elevator and the overtaking elevator by using the respective speed patterns, and obtaining the obtained speed difference. It can be calculated. The overtaking speed difference is not limited to this method, and may be calculated by another method.

  When the overtaking speed difference calculated by the overtaking speed difference calculating unit 16 is larger than the specified speed difference stored in the parameter setting unit 12, the departure suppression management unit 17 selects one of the elevators in which overtaking occurs. Suppress (delay) the departure of the elevator and adjust so that the overtaking speed difference is less than the specified speed difference. In this case, the departure suppression management unit 17 obtains an elevator that suppresses departure and a departure suppression time (time for delaying departure) from the position, speed, etc. of the elevator (car), and inputs and outputs such information (departure suppression command). Transmit to the management unit 11. An elevator for suppressing departure and a method for determining the departure suppression time will be described later.

  The input / output management unit 11 transmits the information (departure suppression command) received from the departure suppression management unit 17 to the input / output control unit 28.

  The hall call unit 25 includes a hall call button 31 and a card reader 32 that are installed at the landings on each floor. The elevator passenger can call the elevator by pressing the hall call button 31 or by causing the card reader 32 to read a card for calling the elevator. When the elevator is called by the hall call button 31 or the card reader 32, the hall call unit 25 sends hall call information (information from which floor to which direction the elevator is called) to the input / output control unit 28. Send.

  As described above, the departure suppression management unit 17 obtains an elevator that suppresses departure when the overtaking speed difference is larger than the specified speed difference. The elevator that suppresses the departure is obtained based on the priority of departure set for each elevator. The departure suppression management unit 17 determines an elevator having a low departure priority as an elevator that suppresses (delays) departure among the elevators that are in the same hoistway and cause overtaking.

  The departure suppression management unit 17 considers operation information (for example, elevator position, speed, and traveling direction at each time), elevator information (for example, speed pattern and rated speed), the next stop floor, and a travel section. The departure priority is set for each elevator (car). The next stop floor can be obtained from the hall call information, and the traveling section can be obtained from the current position of the car and the next stop floor. The traveling direction of the car can be obtained from the current position of the car and hall call information. A method for setting the priority of departure can be arbitrarily determined. The departure suppression management unit 17 stores the departure priority set for each elevator in the parameter setting unit 12.

  FIG. 4 is a flowchart of a process in which the elevator control system according to the present embodiment obtains whether or not overtaking occurs and obtains a departure restraint time. The elevator control system according to the present embodiment executes a series of processes shown in FIG. 4 as needed for the elevators in the same hoistway, and when the passing speed difference is larger than the specified speed difference, Suppress the departure and adjust so that the overtaking speed difference is less than the specified speed difference. In this embodiment, as shown in FIGS. 1 and 2, a single general elevator and a single high-speed elevator (elevator whose rated speed is faster than a general elevator) travel in the same hoistway. explain.

  In step S1, the departure suppression management unit 17 sets a departure priority for each elevator (car). The method of setting the priority of departure is as described above. Then, it progresses to step 2.

  In step 2, the group management control unit 24 determines whether the traveling section of the high-speed elevator and the traveling section of the general elevator overlap. For example, when the general elevator travel section is from the first floor to the 120th floor, and the high speed elevator travel section is from the second floor to the 110th floor, these travel sections overlap the sections from the first floor to the 110th floor. It is determined. The elevator section can be determined from the current position of the car and the next stop floor, the current position of the car can be determined from the operation information, and the next stop floor of the car is determined from the hall call information. Can do. If the traveling section of the high-speed elevator and the traveling section of the general elevator overlap, the process proceeds to step S3.

  In step S3, the group management control unit 24 determines whether or not the general elevator and the high speed elevator travel in the same direction. Whether or not these elevators travel in the same direction can be determined from the operation information. When these elevators travel in the same direction, the process proceeds to step S4.

  In step S4, the group management control unit 24 determines whether or not the traveling directions of the general elevator and the high-speed elevator are upward using the operation information. If the direction of travel of these elevators is upward, the process proceeds to step S5, and if not, the process proceeds to step S6.

  Step S5 is processing when the traveling direction of the general elevator and the high-speed elevator is upward. In step S5, the group management control unit 24 determines whether or not the current position of the high-speed elevator is on a floor below the current position of the general elevator using the operation information. If the current position of the high-speed elevator is on a floor below the current position of the general elevator, the process proceeds to step S7.

  Step S6 is processing when the traveling direction of the general elevator and the high-speed elevator is downward. In step S6, the group management control unit 24 determines whether the current position of the high-speed elevator is on a floor above the current position of the general elevator, using the operation information. If the current position of the high-speed elevator is on a floor above the current position of the general elevator, the process proceeds to step S7.

  In step S7, the estimated arrival time calculation unit 14 calculates the estimated arrival time of the high-speed elevator and the general elevator to the next stop floor. The expected arrival time at the next stop floor can be calculated using operation information (for example, the position, speed, and traveling direction of the elevator at each time) and elevator information (for example, a speed pattern). Then, it progresses to step 8.

  In step S8, the overtaking prediction detection unit 15 uses the estimated arrival time to the next stop floor calculated by the estimated arrival time calculation unit 14, and the estimated arrival time of the elevator ahead in the traveling direction is behind the traveling direction. It is determined whether it is later than the estimated arrival time of the elevator. For example, when the traveling direction of the general elevator and the high speed elevator is upward, the estimated arrival time at the next stop floor of the general elevator (the elevator ahead of the traveling direction from S5) is advanced from the high speed elevator (from S5). It is determined whether it is later than the expected arrival time at the next stop floor of the elevator after the direction). When the estimated arrival time at the next stop floor is later than the elevator behind the traveling direction, the process proceeds to step S9.

  In step S9, the overtaking prediction detection unit 15 uses the operation information (for example, the position, speed, and traveling direction of the elevator at each time) and the elevator information (for example, the speed pattern), so that the high-speed elevator and the general elevator are at the same time. Check if they were in the same position. When these elevators are at the same position at the same time, it is a case where overtaking occurs between elevators (cars), and the process proceeds to step S10. If these elevators are not in the same position at the same time, no overtaking occurs between the elevators (cars).

  When overtaking occurs between elevators, the time when these elevators were in the same position is the time when overtaking occurs, and this same position (position of the elevator at the time when overtaking occurs) is the position where overtaking occurs. It is. In this way, the overtaking prediction detection unit 15 determines whether or not overtaking occurs between elevators, and when overtaking occurs between elevators, overtaking occurs (overtaking time) and overtaking occurs. The position (overtaking position) can be obtained.

  In step S10, the overtaking speed difference calculation unit 16 uses the overtaking time, operation information, and elevator information (speed pattern) obtained by the overtaking prediction detection unit 15, and calculates the speed at the overtaking time for each of the high-speed elevator and the general elevator. Ask. Then, the passing speed difference is calculated by calculating the difference between the determined speeds. Then, it progresses to step 11.

  In step 11, the departure suppression management unit 17 compares the overtaking speed difference obtained by the overtaking speed difference calculation unit 16 with the specified speed difference stored in the parameter setting unit 12. If the overtaking speed difference is greater than the specified speed difference, the process proceeds to step S12.

  In step 12, the departure suppression management unit 17 obtains a departure suppression time t such that the overtaking speed difference is equal to or less than the specified speed difference. The departure suppression time t is obtained as follows.

  Assuming that the departure time of the elevator with the low priority of departure set in step S1 (elevator for suppressing departure) is delayed by time Δt, the overtaking speed difference is recalculated in the same manner as in steps S9 and S10. Next, as in step S11, the overtaking speed difference obtained by this recalculation is compared with the specified speed difference. If the overtaking speed difference obtained by recalculation is larger than the specified speed difference, the time Δt is increased and the overtaking speed difference is recalculated. The above process is repeated until the overtaking speed difference obtained by recalculation becomes equal to or less than the specified speed difference. Then, the time Δt when the overtaking speed difference obtained by recalculation becomes equal to or less than the specified speed difference is set as the departure suppression time t. When the departure suppression time t is obtained in this way, the process proceeds to step S13.

  In step S13, the departure suppression management unit 17 delays the departure time of an elevator having a low departure priority among the elevators in which overtaking occurs by the departure suppression time t, and suppresses the departure of an elevator having a low departure priority. The departure suppression management unit 17 transmits a departure suppression command (an elevator for suppressing departure and a departure suppression time t) to the input / output management unit 11. The input / output management unit 11 transmits a departure suppression command to the car control units 20 a to 20 d via the input / output control unit 28. In this way, the departure suppression management unit 17 can adjust the overtaking speed difference to be equal to or less than the specified speed difference by suppressing (delaying) the departure of the elevator having a low departure priority.

  In the flowchart shown in FIG. 4, the overtaking speed difference is obtained, and when the overtaking speed difference is larger than the specified speed difference, the departure of the elevator is suppressed, and the overtaking speed difference is adjusted to be equal to or less than the specified speed difference. . In addition to this method, by setting an elevator overtaking prohibition section in advance, it is possible to suppress the departure of the elevator so that the overtaking speed difference is equal to or less than the specified speed difference. Hereinafter, this method will be described.

  The elevator overtaking prohibition section is a traveling section that prohibits overtaking from occurring between elevators (cars) in the elevator traveling section, and can be arbitrarily set in advance. For example, a traveling section in the center of the traveling direction of the hoistway can be set as an overtaking prohibited section. In the example shown in FIG. 1, for example, a traveling section including 50 to 60 floors can be set as an overtaking prohibited section. This is because, in the traveling section in the central portion of the hoistway in the traveling direction, the elevator speed is often large, so the overtaking speed difference is large and the overtaking speed difference is expected to be larger than the specified speed difference. Outside the overtaking prohibited section, the overtaking speed difference is expected to be less than the specified speed difference. The overtaking prohibited section is set in the parameter setting unit 12 in advance. The parameter setting unit 12 stores the overtaking prohibited section.

  FIG. 5 is a flowchart of a process for obtaining a departure restraint time such that the overtaking speed difference is equal to or less than the specified speed difference by predetermining the overtaking prohibition section in the elevator control system according to the present embodiment. In the following description, only parts different from the flowchart shown in FIG. 4 will be described.

  In step S21, the overtaking speed difference calculation unit 16 determines whether or not the overtaking position obtained by the overtaking prediction detection unit 15 in step S9 is within the overtaking prohibition section stored in the parameter setting unit 12. If the overtaking position is within the overtaking prohibited section, the process proceeds to step S22.

  In step 22, the departure suppression management unit 17 obtains a departure suppression time t such that the overtaking position does not enter the overtaking prohibited section. The departure suppression time t is obtained as follows.

  Assuming that the departure time of the elevator with the low priority of departure set in step S1 (elevator for suppressing departure) is delayed by time Δt, the overtaking position is obtained again in the same manner as in steps S9 and S10. Next, as in step S21, it is determined whether or not the overtaking position obtained again is within the overtaking prohibited section. When the overtaking position obtained again is within the overtaking prohibition section, the time Δt is increased and the overtaking position is obtained again. The above processing is repeated until the overtaking position obtained again is outside the overtaking prohibited section. Then, the time Δt when the overtaking position obtained again is outside the overtaking prohibition section is set as the departure suppression time t. When the departure suppression time t is obtained in this way, the process proceeds to step S13.

  As described above, the overtaking of the elevator can be prevented from occurring within the overtaking prohibited section and can be generated outside the overtaking prohibited section. As described above, the overtaking speed difference is expected to be larger than the specified speed difference within the overtaking prohibited section, and the overtaking speed difference is expected to be less than the specified speed difference outside the overtaking prohibited section. Therefore, by the process according to the flowchart shown in FIG. 5, it is possible to suppress the departure of one of the elevators in which overtaking occurs and adjust the overtaking speed difference to be equal to or less than the specified speed difference.

  In the embodiment described above, the specified speed difference and the overtaking prohibition section are determined in advance and set (stored) in the parameter setting unit 12. The overtaking speed difference calculation unit 16 or the departure suppression management unit 17 can change the specified speed difference and the overtaking prohibition section stored in the parameter setting unit 12. In this embodiment, it is assumed that the overtaking speed difference calculation unit 16 changes the specified speed difference and the overtaking prohibited section.

  The overtaking speed difference calculation unit 16 changes the specified speed difference or the overtaking prohibited section according to the elevator operation time (operation time zone) or the elevator waiting time at the landing. For example, when the elevator operation time is night, the noise and vibration of the elevator are reduced compared to the daytime by making the specified speed difference smaller or making the overtaking prohibited section longer than when the operation time is daytime. To do. In addition, when the elevator waiting time is long, the specified speed difference is increased or the overtaking prohibited section is shortened compared to normal operation (although the noise and vibration reduction effect of the elevator is sacrificed). This makes it possible for the elevator to run at a higher speed than when operating. The overtaking speed difference calculation unit 16 stores the changed specified speed difference or overtaking prohibited section in the parameter setting unit 12.

  In the above embodiment, the case where two elevators are provided in the same hoistway that is not separated by a wall or the like has been described. In the elevator control system according to the present invention, even when three or more elevators are provided in the same hoistway, the elevator noise is taken into consideration in the same manner as in the above embodiments in consideration of the speed difference when the elevator is overtaken. And vibration can be reduced.

  In addition, this invention is not limited to said Example, Various modifications are included. For example, the above-described embodiments are described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to an aspect including all the configurations described.

  DESCRIPTION OF SYMBOLS 1a, 1c ... High speed elevator, 1b, 1d ... General elevator, 11 ... Input / output management part, 12 ... Parameter setting part, 13 ... Departure suppression control part, 14 ... Arrival prediction time calculation part, 15 ... Overtaking prediction detection part, 16 ... passing speed difference calculation unit, 17 ... departure suppression management unit, 20a-20d ... car control unit, 21a-21d ... car state transmission unit, 22a-22d ... departure suppression command unit, 24 ... group management control unit, 25 ... hall Call part, 26, 27 ... hoistway, 28 ... input / output control part, 31 ... hall call button, 32 ... card reader.

Claims (6)

In an elevator control system of an elevator apparatus in which a plurality of elevators with different rated speeds are installed in the same hoistway,
It has a parameter setting unit, an estimated arrival time calculation unit, an overtaking prediction detection unit, an overtaking speed difference calculation unit, and a departure suppression management unit, and uses the position, speed, and traveling direction of the elevator at each time as operation information A group management control unit for receiving from the elevator;
The parameter setting unit stores a speed pattern in which a relationship between the moving time and speed of the elevator is determined in advance, a predetermined speed difference, and a departure priority set in the elevator,
The predicted arrival time calculation unit calculates the predicted arrival time to the next stop floor of the elevator using the operation information and the speed pattern,
The overtaking prediction detection unit obtains whether or not overtaking occurs between the elevators in the same hoistway using the estimated arrival time, the operation information, and the speed pattern, and when overtaking occurs. Finds the time when the overtaking occurs and the position where the overtaking occurs,
The overtaking speed difference calculation unit uses the time at which the overtaking occurs, the operation information, and the speed pattern to calculate a difference in speed at the time at which the overtaking occurs between the elevators where overtaking occurs. As sought
The departure suppression management unit, when the overtaking speed difference is larger than the specified speed difference, delays the departure of the elevator having a low priority of the departure among the elevators in which overtaking occurs,
An elevator control system characterized by that. The departure suppression management unit
The overtaking speed difference obtained by delaying the departure of the elevator, which is a time for delaying the departure of the elevator, by delaying the departure of the elevator having a low priority of the departure by the departure suppression time is equal to or less than the specified speed difference. Seeking
The elevator control system according to claim 1, wherein the departure of the elevator with the low priority of the departure is delayed by the obtained departure suppression time. In an elevator control system of an elevator apparatus in which a plurality of elevators with different rated speeds are installed in the same hoistway,
It has a parameter setting unit, an estimated arrival time calculation unit, an overtaking prediction detection unit, an overtaking speed difference calculation unit, and a departure suppression management unit, and uses the position, speed, and traveling direction of the elevator at each time as operation information A group management control unit for receiving from the elevator;
The parameter setting unit stores a predetermined speed pattern of a relationship between the moving time and speed of the elevator, a predetermined overtaking prohibition section, and a departure priority set for the elevator,
The predicted arrival time calculation unit calculates the predicted arrival time to the next stop floor of the elevator using the operation information and the speed pattern,
The overtaking prediction detection unit obtains whether or not overtaking occurs between the elevators in the same hoistway using the estimated arrival time, the operation information, and the speed pattern, and when overtaking occurs. Finds the time when the overtaking occurs and the position where the overtaking occurs,
The overtaking speed difference calculating unit obtains whether the position where the overtaking occurs is within the overtaking prohibited section,
The departure suppression management unit, when the position where the overtaking occurs is within the overtaking prohibited section, delays the departure of the elevator with a low priority of the departure among the elevators where overtaking occurs,
An elevator control system characterized by that. The departure suppression management unit
The position where the overtaking occurs, which is obtained by delaying the departure of the elevator having a low priority of the departure by the departure suppression time, is outside the overtaking prohibition section. Asking
The elevator control system according to claim 3, wherein the departure of the elevator with the low priority of departure is delayed by the obtained departure suppression time.   The elevator control system according to claim 1 or 2, wherein the overtaking speed difference calculation unit is capable of changing the prescribed speed difference stored in the parameter setting unit.   The elevator control system according to claim 3 or 4, wherein the overtaking speed difference calculation unit is capable of changing the overtaking prohibition section stored in the parameter setting unit.

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