JP6861123B2 - Group management elevator equipment - Google Patents

Description

The present invention relates to a group management elevator device including a group management MPU that controls group management of a plurality of elevator units.

In the above technical field, the elevator group management system described in Patent Document 1 is known. In this elevator group management system, the motor that drives the car is based on the degree of congestion in the elevator hall (landing) calculated by the congestion degree detection device and the measured value of the load inside the car detected by the load sensor. A car with low power consumption will be dispatched to the elevator hall where the hall calling device is operated.

Japanese Unexamined Patent Publication No. 2014-9058

However, although the elevator group management system described in Patent Document 1 aims at optimizing the flow of people and traffic volume, the actual load status of the control panel and the motor is not taken into consideration, and the load sharing between the elevator units is not taken into consideration. It is difficult to equalize the rates. Therefore, there is a problem that the replacement time and the maintenance cycle of the elevator equipment vary.

Therefore, the present invention provides a group management elevator device capable of equalizing the replacement time or maintenance cycle of elevator equipment among elevator units.

In order to solve the above problems, the group management elevator device according to the present invention controls a group management MPU (Micro Processing Unit) that executes vehicle allocation to a plurality of elevators and the operation of a plurality of elevators according to the vehicle allocation. It is provided with a plurality of unit management MPUs, and each of the plurality of unit management MPUs is an actual load indicating the magnitude of the actual load of the elevator equipment related to the life of the elevator equipment possessed by each of the plurality of elevator units. The data is transmitted to the group management MPU, and the group management MPU determines the elevator with a large actual load based on the actual load data from each of the plurality of elevators, and the elevator that is determined to have a large actual load. It is provided with a load equalization processing unit that controls the operation so as to suppress the actual load. The actual load data is the running torque, and the actual load data is the effective average value of the running torque .

According to the present invention, it is possible to equalize the replacement time or maintenance cycle of the equipment between the units.

Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is a schematic block diagram which shows the group management elevator apparatus which is one Embodiment. It is a waveform figure which shows an example of the time change of the operating speed and running torque of an elevator. It is a flowchart which shows the data transmission from the unit management MPU to the group management MPU. It is a flowchart which shows the processing in the load equalization processing part in a group management MPU.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a group management elevator device according to an embodiment of the present invention.

As shown in FIG. 1, the group management elevator device of the present embodiment includes a group management panel 2 having a group management MPU 1 and a plurality of unit control panels 4A to 4C having each of the unit management MPUs 3A to 3C. The group management MPU 1 is an MPU (Micro Processing Unit) that executes arithmetic processing for group management control, and each of the unit management MPUs 3A to 3C is an MPU that executes arithmetic processing for elevator unit control. The group management MPU1 gives the group management vehicle allocation allocation data 5A to 5C to the unit management MPUs 3A to 3C, respectively, and the group management MPU3A to 3C gives the group management MPU1 the unit operation data 6A to 6C, respectively. ..

Next, the configuration on the Unit A to C side controlled by the Unit control panels 4A to 4C will be described. The components in which "A", "B" and "C" are added to the reference numerals in FIG. 1 are the components of Units A, B and C, respectively. Since the configuration on each unit side is the same, here, the configuration of Unit A controlled by the Unit control panel 4A will be described as a representative.

The unit control panel 4A includes an inverter device 7A, a brake control circuit 8A, and the like, in addition to the unit management MPU 3A described above. The main rope 10A is wound around the sheave of the electric hoisting machine 9A that receives power from the inverter device 7A. A car 11A is connected to one end side of the main rope 10A, and a counterweight 12A is connected to the other end side of the main rope 10A. As a result, when the sheave of the electric hoisting machine 9A rotates and the main rope 10A is driven, the car 11A and the counterweight 12A move up and down in a hoistway (not shown) in opposite directions. The brake 13A of the electric hoist 9A is controlled to be braked and released by the brake control circuit 8A.

A push button 14A inside the car is arranged in the car 11A, and a car upper control panel 15A is arranged in the upper part of the outside of the car 11A. The car communication data 16A when the car inner push button 14A and the car upper control panel 15A are operated is transmitted to the unit management MPU3A in the unit control panel 4A via a tail code or the like.

Further, a landing side push button 17 shared by each unit is arranged at each floor landing that receives the service of the car 11A, and the landing communication data 18 that is an operation signal thereof is the unit management MPU3A as in the car communication data 16A described above. Will be sent to.

The car communication data 16A and the landing communication data 18 are transmitted to the group management MPU1 as the unit side operation data 6A via the unit management MPU3A.

The group management MPU1 executes the group management control so as to optimize the flow of people and the traffic volume in the same manner as the general group management. Further, in the present embodiment, the group management MPU 1 executes the group management control by using the actual load status of the motors of the control panels 4A to 4C and the electric hoisting machines 9A to 9C of each unit. As a result, the load sharing ratio among the units can be equalized.

More specifically, the group management MPU 1 is provided with a load equalization processing unit 19, and the load equalization processing unit 19 generates heat for the motors of the electric hoisting machines 9A to 9C, the inverter devices 7A to 7C, the brakes 13A to 13C, and the like. We are trying to distribute the life of the equipment.

The group management MPU 1 of the group management panel 2 receives the car communication data 16A to 16C and the landing communication data 18 from the unit management MPUs 3A to 3C of each unit control panel 4A to 4C, and allocates the group management vehicle allocation based on these communication data. Data 5A to 5C are created and transmitted to each unit management MPU3A to 3C. Further, the load equalization processing unit 19 of the group management MPU 1 of the group management board 2 receives effective load value data (for example, torque RMS (Root Mean Square)) from each of the unit management MPUs 3A to 3C in each electric hoisting machine or the like. ) Etc. and use it for vehicle allocation control of each unit.

Here, as an example of the effective value data of the load, the traveling torque indicating the load state of the electric hoist will be mainly described.

FIG. 2 is a waveform diagram showing an example of time changes in the operating speed and running torque of the elevator.

In FIG. 2, in one traveling stroke of the car, the time until the brake 13A (FIG. 1) is released, the car 11A starts to move, and the operating speed of the elevator reaches the rated speed is T1, and the maximum running torque at that time is T1. (Τ1 + τ2), the holding time of the rated speed is T2, the running torque at that time is τ2, the time from the rated speed until the car 11A is stopped is T3, and the maximum running torque at that time is (τ3-τ2). Let T4 be the cycle time until the next operation. In this case, the effective mean value (τ _rms ) of the torque can be obtained by the calculation formula in FIG.

_{In the present embodiment, the unit management MPU3A calculates the effective mean value (τ rms} ) of the torque based on the torque command for the inverter device 7A. _{Similarly, the unit management MPUs 3B and 3C also calculate the effective average value (τ rms} ) of the torque indicating the load state of the units B and C, respectively.

The traveling torque accurately indicates the magnitude of the actual load when the motor of the hoisting machine is operating. Therefore, by using the torque as the actual load data, the accuracy and accuracy of the operation control for equalizing the load between the units, which will be described later, are improved. Further, by using the effective average value (root mean square value) of the torque, the load state can be accurately evaluated even when the magnitude and the positive / negative (direction) of the torque change during one running stroke. Further, by using the torque command value for the inverter device 7A, it is possible to acquire the actual load data used for the operation control for load equalization without using a special detection means such as a sensor.

Since the magnitude of the traveling torque is related to the magnitude of the motor current, it is also related to the output current of the inverter device. Therefore, the traveling torque is also used as actual load data indicating the load state of the operating inverter device.

FIG. 3 is a flowchart showing data transmission from the unit management MPUs 3A to 3C to the group management MPU1. Although not shown in the flowchart, this data transmission is executed periodically or periodically.

In step S1, the unit management MPU3A calculates the effective average value of the torque (“τ _rms ” in FIG. 2) as described above in the own unit A, and creates the effective average value data of the torque.

In parallel with step S1, in step S2, the unit management MPU3A creates the unit operation count data from the unit operation counts counted up to the present time.

After steps S1 and S2 are executed, in step S3, the unit management MPU3A creates the unit operation operation data including the effective average value data of these torques and the unit operation number data, that is, the actual load data.

Next, in step S4, the unit management MPU3A transmits the unit operation operation data created in step S3 to the group management MPU1.

The other Unit management MPUs 3B and 3C also transmit the actual load data of the Units B and C to the group management MPU1 in the same manner.

Here, in the present embodiment, in addition to the effective average value data of torque (FIG. 2), the unit operation frequency data is created as the actual load data. As described above, the effective average value data of the torque is preferable as the actual load data of the motor of the hoisting machine and the inverter device. Further, the unit operation frequency data is preferable as the actual load data of the brake whose life is related to the operation frequency.

The unit operation frequency data may be used as the actual load data of the motor of the hoisting machine and the inverter device. Further, both the effective average value data of the torque and the unit operation frequency data may be used as the actual load data of the motor of the hoisting machine and the inverter device. For example, the load state of the motor of the hoisting machine or the inverter device may be evaluated by integrating the effective torque value and the number of times the unit is operated.

FIG. 4 is a flowchart showing the processing in the load equalization processing unit 19 in the group management MPU 1.

The load equalization processing unit 19 of the group management MPU 1 aggregates the actual load data transmitted from the unit management MPUs 3A to 3C, and calculates the load balance for each unit.

First, in step S5, the load of Unit A is set as the maximum value among the loads of Units A to C.

Next, in step S6, it is determined whether the load of Unit B is larger than the maximum value set in step S5 (that is, the load of Unit A). If the load of Unit B is heavier (YES in step S6), then step S7 is executed.

In step S7, the load of Unit B is set as the maximum value instead of the load of Unit A.

After executing step S7, or when it is not determined in step S6 that the load of Unit B is larger (NO in step S6), that is, when the load of Unit B is less than or equal to the load of Unit A, then step S8 is executed. Will be done.

In step S8, it is determined whether the load of Unit C is larger than the set maximum value, that is, the load of Unit A (NO in step S6) or the load of Unit B (execution of step S7). If the load of Unit C is heavier (YES in step S8), step S9 is then executed.

In step S9, the load of Unit C is set as the maximum value instead of the load of Unit A or Unit B.

After executing step S9, or when it is not determined in step S8 that the load of Unit C is larger (NO in step S8), that is, when the load of Unit C is less than or equal to the load of Unit A or Unit B, then the step S10 is executed.

In step S10, the load equalization processing unit 19, that is, the group management MPU1, determines the unit corresponding to the set maximum value as the unit with the maximum load.

In step S11, the load equalization processing unit 19 transmits information on the determined maximum load unit. Then, the unit with the maximum load is set as the unit to be paused in the automatic mode or the manual mode. As a result, the load balance can be adjusted so that the load is equalized among the units managed by the group management MPU1.

In the case of the automatic mode, the group management MPU1 assigns the maximum load unit to the hibernation mode in preference to other units during the time zone excluding the busy hours when traffic demand is high, for example, at night or during off-hours (holidays). .. Therefore, even though the load is equalized among the units, the service of the plurality of units as a whole does not actually deteriorate.

Further, in the manual mode, the group management MPU 1 displays and issues information on the maximum load unit on the monitoring panel installed in the manager's room or the machine room control panel. After confirming the unit with the maximum load, the managers operate the monitoring panel or the machine room control panel at night or during off-hours (holidays) to set the displayed unit operation mode to hibernation mode. By setting the operation of the elevator unit, which has a large actual load, to the hibernation mode in this way, the load is surely equalized among the units. Further, by limiting the suspension target to only one elevator unit having the maximum actual load, it is possible to prevent the service deterioration of the plurality of elevator units as a whole.

As shown in FIG. 4, the load equalization processing unit 19 executes a relatively simple process of comparing the magnitude of the load data to determine the maximum load, so that the processing load of the group management MPU 1 can be increased. It can be suppressed. Therefore, the normal unit allocation function of the group management MPU does not deteriorate. In addition, it is not necessary to improve the performance or functionality of the MPU, and the cost increase of the group management control device can be suppressed.

In this way, by controlling the load equalization processing unit 19 so as to average the load of each of the plurality of units managed by the group management MPU 1, the electric hoisting machine whose operating rate and heat generation become life factors. It is possible to equalize the replacement time or maintenance cycle of the motors 9A to 9C, the inverter devices 7A to 7C, the brakes 13A to 13C, and the like.

In addition, the actual load data of each unit is transmitted from the unit management MPUs 3A to 3C to the group management MPU1, and the operation is controlled so as to equalize the load between the units using the actual load data to the group management MPU1. A chemical processing unit 19 is provided. According to such a configuration, the operation control for equalizing the load between the units in the load equalization processing unit 19 determines the replacement time or maintenance cycle of the equipment that will reach the end of its life in relation to the actual load data. Equalization can be achieved.

Further, in the above-described embodiment, the actual load data includes the effective average value of the traveling torque, and the load equalization processing unit 19 uses the effective average value of the traveling torque to perform operation control for equalizing the load between the units. Do. According to such a configuration, the replacement timing or maintenance cycle of the motors of the electric hoisting machines 9A to 9C, the inverter devices 7A to 7C, the brakes 13A to 13C, etc., whose life factors are the operating rate and heat generation, should be equalized. Can be done.

In the above-described embodiment, the effective average value of the torque is transmitted from the plurality of unit management MPUs 3A to 3C to the group management MPU1, but the present invention is not limited to this, and the motor current of the electric hoisting machines 9A to 9C and the inverter devices 7A to 7A to Other actual load data such as the current value and the effective average value of the output current of 7C may be transmitted to the group management MPU1 and used for operation control for equalizing the load between the units.

In the above-described embodiment, the load is suppressed by assigning the hibernation mode to the unit having a large load, but the load is not limited to this, and various load suppression operation modes may be set. For example, driving is performed by lowering the acceleration or steady speed during running, or the assignment of calls is suppressed. In this case, since the unit having a large load is also operated without pausing, it is possible to suppress the service deterioration of the plurality of units as a whole regardless of the traffic conditions during the time when the load suppression operation mode is executed.

In the above-described embodiment, the operation control for equalizing the load between the units is executed as one function of the group management MPU 1, so that it can be realized without changing the equipment configuration such as adding a dedicated circuit. Therefore, it is possible to improve the functionality without incurring an increase in the cost and size of the group management control device.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

For example, the number of elevators is not limited to three, and any number of elevators may be used. Further, as the actual load data, the load inside the car and the temperature of the motor of the hoisting machine or the inverter device may be applied.

1 group management MPU
Group 2 management board 3A, 3B, 3C Unit management MPU
4A, 4B, 4C Unit control panel 5A, 5B, 5C Group management Vehicle allocation data 6A, 6B, 6C Unit side operation data 7A, 7B, 7C Inverter device 8A, 8B, 8C Brake control circuit 9A, 9B, 9C Electric hoisting Machine 10A, 10B, 10C Main rope 11A, 11B, 11C Riding car 12A, 12B, 12C Counter weight 13A, 13B, 13C Brake 14A, 14B, 14C Car internal push button 15A, 15B, 15C Car upper control panel 16A, 16B, 16C Car communication data 17 Landing side push button 18 Landing communication data 19 Load equalization processing unit

Claims (7)

A group management MPU that executes vehicle allocation to multiple elevators,
A plurality of unit management MPUs that control the operation of the plurality of elevator units according to the vehicle allocation allocation, and
In a group management elevator device equipped with
Each of the plurality of unit management MPUs transmits actual load data indicating the magnitude of the actual load of the elevator equipment related to the life of the elevator equipment possessed by each of the plurality of elevator units to the group management MPU.
The group management MPU determines the elevator unit having a large actual load based on the actual load data from each of the plurality of elevator units, and performs the operation of the elevator unit determined to have a large actual load. comprising a load equalization processing unit for controlling to suppress the load,
The actual load data is related to running torque.
The group management elevator device , wherein the actual load data is an effective average value of the traveling torque. In the group management elevator device according to claim 1.
A group management elevator device, wherein each of the plurality of Unit management MPUs calculates a root mean square value of the traveling torque, which takes a positive or negative value in one traveling stroke, and obtains the effective average value. In the group management elevator device according to claim 1 or 2.
The elevator device is a group management elevator device characterized by being a motor of a hoisting machine. In the group management elevator device according to claim 1 or 2.
The elevator device is a group management elevator device characterized in that it is an inverter device that supplies electric power to a motor of a hoisting machine. In the group management elevator device according to claim 1 or 2.
A group management elevator device characterized in that a torque command value for an inverter device that supplies electric power to a motor of a hoist is used as the value of the traveling torque. In the group management elevator device according to claim 1.
The load equalization processing unit determines the elevator unit having the maximum actual load, and controls the operation of the elevator unit determined to have the maximum actual load so as to suppress the actual load. A group management elevator device characterized by. In the group management elevator device according to any one of claims 1 to 6.
The load equalization processing unit is a group management elevator device characterized in that the operation of the elevator unit is suspended in order to suppress the actual load.

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