Method and system for controlled operation of backup power supply of elevator group

Abstract

Disclosed in the present invention are a method and system for controlled operation of a backup power supply of an elevator group. When a backup power supply is switched in and all elevators are in a parked state, elevators in a group are sorted according to main landing return priorities, and several elevators are controlled to return to a main landing each time; when all the elevators have arrived at the main landing, several elevators are provided to continue service. The system comprises a group control device, a backup power supply device and an elevator control device, wherein the group control device comprises a controlled operation control module and a group management module. The present invention takes into account a plurality of factors to sort elevators in a group according to main landing return priorities, and controls several elevators to return to a main landing each time, thereby improving the overall main landing return efficiency, reducing the overall waiting time of passengers in cars, and reducing passage discomfort. The present invention takes in account a plurality of factors to provide several elevators to continue service, thereby improving the service level of backup power supply operation.

Description

A method and system for controlling the operation of backup power supply for elevator groups Technical Field

[0001] This invention belongs to the field of elevator application technology, specifically relating to a method and system for controlling the operation of backup power supply for elevator groups. Background Technology

[0002] In existing elevator group control systems, backup power supplies are sometimes configured to allow the elevator group to continue operating at a lower service level after the main power supply fails. For safety reasons, after the elevators in the group stop at the nearest station, they are usually returned to the base station one by one; once all elevators have returned to the base station, one elevator is allowed to continue service.

[0003] Chinese Patent Publication No. CN114906693 A discloses an elevator control method, device, electronic equipment, and storage medium. When the backup power supply of the elevator system is detected to be activated, elevator operating permissions are obtained, and each operable elevator in the system is identified. The backup power supply is used to supply power to the operable elevators with the required operating permissions. The operating permissions are issued to each operable elevator, and each operable elevator is controlled to return to its leveling floor sequentially. After each operable elevator has completed leveling, the operating permissions are issued to each operable elevator, and each operable elevator is controlled to return to its base station sequentially. The elevator with the highest gravity sensor reading among the operable elevators is selected as the first target elevator. This patent document restricts the backup power supply to operable elevators, requiring the control device to be equipped with separate elevator power switching control components for each elevator, increasing hardware costs. Furthermore, when other cars are occupied, a power outage in the display device can cause passenger panic. This patent document sequentially controls the return-to-level and return-to-base stations of operable elevators. Furthermore, when selecting the first target elevator, it only considers gravity sensor readings without taking into account factors such as the car's position. Therefore, the overall efficiency is low, and when multiple cars are occupied, the overall waiting time becomes long, leading to passenger dissatisfaction. In summary, the elevator power switching control component incurs hardware costs, and the sequential power supply and control of the return-to-level and return-to-base stations for operable elevators results in low overall efficiency.

[0004] Therefore, a method and system for controlling the operation of backup power supplies for elevator groups is urgently needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method and system for controlling the operation of backup power supplies for elevator groups.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] The first objective of this invention is to provide a method for controlling the operation of backup power supply for elevator groups, comprising the following steps:

[0008] Step 1: Base Station Return Control; After the backup power is switched on and all elevators are in a stopped state, the elevators in the group are prioritized for returning to the base station, and the elevators are controlled to return to the base station. This includes the following sub-steps:

[0009] Sub-step 1: Calculate the base station priority Pi for each elevator, i = 1, 2, ..., M, where M is the total number of elevators in the group;

[0010] Sub-step 2: Sort according to the return base station priority Pi, and generate the return base station sequence X;

[0011] Sub-step 3: Determine the number N of elevators that simultaneously return to the base station and the elevator numbers of the N elevators;

[0012] Sub-step 4: Command the N elevators to return to the base station;

[0013] Sub-step 5: When an elevator arrives at the base station, remove it from the return base station sequence X;

[0014] Sub-step 6: Once all elevators have reached the base station, proceed to step two; otherwise, proceed to sub-step 3.

[0015] Step Two: Continue service control, which includes the following sub-steps:

[0016] Sub-step 7: Determine the number J of elevators that will continue to provide service and the elevator numbers of the J elevators;

[0017] Sub-step 8: Order elevator J to continue service and disable service for the remaining elevators;

[0018] Sub-step 9: Once all elevators have switched back to main power, proceed to step 3; otherwise, proceed to sub-step 8.

[0019] Step 3: Exit controlled operation; the controlled operation module releases the controlled operation signal, and the group management module commands each elevator to resume automatic operation.

[0020] Preferably, in step one, the return-to-base station priority Pi for each elevator is calculated using a weighted method based on its rated speed, the distance between the current floor and the base station, and the current load: P i =K1-K2*(f i -f0) / v i +K3*g i

[0021] Where K1, K2, and K3 are constants, f i Let f0 be the current floor of the i-th elevator, f0 be the base station floor, and g be the floor of the i-th elevator.i Let be the current load of the i-th elevator.

[0022] Preferably, in step one, the number N of elevators simultaneously returning to the base station is determined based on the backup power output, remaining power, and elevator power consumption, and the elevator number is determined based on the return-to-base station sequence X.

[0023] Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

[0024] Preferably, in step two, determining the number J of elevators that will continue to provide service and the elevator numbers of the J elevators is based on the backup power output, remaining power, and elevator power consumption.

[0025] Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

[0026] The second objective of this invention is to provide a system for the controlled operation of backup power supply for elevator groups, comprising a group control device, a backup power supply device, and an elevator control device, wherein the group control device includes a controlled operation control module and a group management module.

[0027] The backup power supply device is connected to the control and operation module via communication bus A, and provides backup power to the group control device and elevator control device via backup power line D.

[0028] The group management module is connected to the elevator control device via communication bus B;

[0029] The control and operation module and the group management module are connected via a communication bus C.

[0030] Preferably, the backup power supply device periodically sends a switching signal, remaining power, and power data to the control and management module.

[0031] The control and operation module periodically sends control and operation signals to the group management module.

[0032] The group management module periodically sends the status data of each elevator to the control and operation module.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] After the main power supply of the elevator fails, during the return-to-base station control phase, the present invention prioritizes the return-to-base station of elevators in the group based on multiple factors, and controls several elevators to return to the base station at a time, thereby improving the overall efficiency of the return-to-base station, reducing the overall waiting time for passengers in the car, and reducing passenger discomfort; during the continued service control phase, several elevators are provided with continued service based on multiple factors, thereby improving the service level of the backup power supply operation. Attached Figure Description

[0035] Figure 1 is a flowchart of a method for controlling the operation of backup power supply for elevator groups according to the present invention.

[0036] Figure 2 is a circuit diagram of a system for controlling the operation of backup power supply for elevator groups according to the present invention. Detailed Implementation

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0038] Example 1

[0039] Please refer to Figure 1. This embodiment provides a method for controlling the operation of backup power supply for elevator groups, including the following steps:

[0040] S1: Base Station Return Control. When backup power is switched on and all elevators are in a stopped state, the elevators in the group are prioritized for returning to the base station. Several elevators are controlled to return to the base station at a time, specifically including the following sub-steps:

[0041] Sub-step 1: Calculate the base station priority Pii = 1, 2, ..., M for each elevator, where M is the total number of elevators in the group; in this embodiment, the priority is calculated using a weighted method based on the rated speed, the distance between the current floor and the base station, and the current load: P i =K1-K2*(f i -f0) / v i +K3*g i

[0042] Where K1, K2, and K3 are constants, f i Let f0 be the current floor of the i-th elevator, f0 be the base station floor, and g be the floor of the i-th elevator. i Let be the current load of the i-th elevator.

[0043] Sub-step 2: Sort according to the return base station priority Pi and generate the return base station sequence X; in this embodiment, the elevator with the highest priority Pi is placed at the front;

[0044] Sub-step 3: Determine the number N of elevators simultaneously returning to the base station and the elevator numbers of the N elevators; in this embodiment, the number N of elevators is determined based on the backup power output power, remaining power, and elevator power consumption:

[0045] Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

[0046] In this embodiment, the elevator numbers of the first N elevators are selected from the return base station sequence X;

[0047] Sub-step 4: Command the N elevators to return to the base station;

[0048] Sub-step 5: When an elevator arrives at the base station, remove it from the return base station sequence X;

[0049] Sub-step 6: Once all elevators have reached the base station, proceed to S2; otherwise, proceed to sub-step 3.

[0050] S2: Continued service control. This includes the following sub-steps:

[0051] Sub-step 7: Determine the number J of elevators that will continue to provide service and the elevator numbers of the J elevators; in this embodiment, the number J of elevators is determined based on the backup power output power, remaining power, and elevator power consumption.

[0052] Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

[0053] In this embodiment, the elevator numbers of J elevators are selected from the elevators that last returned to the base station; alternatively, the elevator numbers of J elevators can also be selected from the elevators that first returned to the base station, or J elevators can be selected in order of elevator numbers.

[0054] Sub-step 8: Order elevator J to continue service and disable the service of the other elevators;

[0055] Sub-step 9: Once all elevators have switched back to main power, proceed to S3; otherwise, proceed to sub-step 8.

[0056] S3: Exit Controlled Operation. The controlled operation signal is released, commanding all elevators to resume automatic operation.

[0057] Example 2

[0058] Please refer to Figure 2. This embodiment provides a system for controlling the operation of backup power supply for elevator groups, including a group control device 1, a backup power supply device 2, and an elevator control device 3. The group control device 1 includes a control operation control module 11 and a group management module 12.

[0059] The backup power supply device 2 is connected to the control and operation module 11 via communication bus A;

[0060] In this embodiment, communication bus A adopts CAN bus; alternatively, other buses, such as RS485, RS232, etc., can also be used.

[0061] The backup power supply device 2 provides backup power to the group control device 1 and the elevator control device 3 through the backup power line D;

[0062] The group management module 12 is connected to the elevator control device 3 via a communication bus B;

[0063] In this embodiment, the communication bus B uses the CAN bus; alternatively, other buses, such as RS485, LonWorks, etc., can also be used.

[0064] The control operation module 11 and the group management module 12 are connected via a communication bus C.

[0065] In this embodiment, the communication bus C adopts the SPI bus; alternatively, other buses, such as RS485, RS232, etc., can also be used.

[0066] In one specific embodiment, the backup power supply device 2 periodically sends data such as the cut-in signal, remaining power, and power output to the control and operation module 11.

[0067] The control operation module 11 periodically sends control operation signals to the group management module 12;

[0068] In this embodiment, the control operation signal includes the elevator numbers of N elevators returning to the base station and the elevator numbers of J elevators continuing to serve.

[0069] The group management module 12 periodically sends the status data of each elevator to the control and operation module 11.

[0070] In this embodiment, the elevator's status data includes the elevator's rated speed, current floor, direction of travel, speed of travel, load, etc.

[0071] The core of this invention lies in prioritizing the return-to-base station for elevators within a group based on multiple factors, and controlling several elevators to return to the base station each time, thereby improving the overall efficiency of the return-to-base station, reducing the overall waiting time for passengers inside the elevator, and reducing passenger discomfort; and providing several elevators with continued service based on multiple factors, thereby improving the service level of backup power operation.

[0072] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling the operation of backup power supply for elevator groups, characterized in that, Includes the following steps: Step 1: Base Station Return Control; After the backup power is switched on and all elevators are in a stopped state, the elevators in the group are prioritized for returning to the base station, and the elevators are controlled to return to the base station. This includes the following sub-steps: Sub-step 1: Calculate the base station priority Pi for each elevator, i = 1, 2, ..., M, where M is the total number of elevators in the group; Sub-step 2: Sort according to the return base station priority Pi, and generate the return base station sequence X; Sub-step 3: Determine the number N of elevators that simultaneously return to the base station and the elevator numbers of the N elevators; Sub-step 4: Command the N elevators to return to the base station; Sub-step 5: When an elevator arrives at the base station, remove it from the return base station sequence X; Sub-step 6: Once all elevators have reached the base station, proceed to step two; otherwise, proceed to sub-step 3. Step Two: Continue service control, which includes the following sub-steps: Sub-step 7: Determine the number J of elevators that will continue to provide service and the elevator numbers of the J elevators; Sub-step 8: Order elevator J to continue service and disable service for the remaining elevators; Sub-step 9: Once all elevators have switched back to main power, proceed to step 3; otherwise, proceed to sub-step 8. Step 3: Exit controlled operation; the controlled operation module releases the controlled operation signal, and the group management module commands each elevator to resume automatic operation.

2. The method for controlling the operation of backup power supply for elevator groups according to claim 1, characterized in that, In step one, the return-to-base station priority Pi for each elevator is calculated using a weighted method based on its rated speed, the distance between the current floor and the base station, and the current load: P i =K1-K2*(f i -f0) / v i +K3*g i Where K1, K2, and K3 are constants, f i Let f0 be the current floor of the i-th elevator, f0 be the base station floor, and g be the floor of the i-th elevator. i Let be the current load of the i-th elevator.

3. The method for controlling the operation of backup power supply for elevator groups according to claim 1, characterized in that, In step one, the number N of elevators simultaneously returning to the base station is determined based on the backup power output, remaining power, and elevator power consumption. The elevator numbers of the N elevators are selected based on the return-to-base station sequence X. Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

4. The method for controlling the operation of backup power supply for elevator groups according to claim 1, characterized in that, In step two, the number J of elevators that will continue to provide service and the elevator numbers of the J elevators are determined based on the backup power output, remaining power, and elevator power consumption. Where P1 is the backup power output power, P2 is the elevator power consumption, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain elevator operation.

5. A system for controlling the operation of backup power supply for elevator groups, characterized in that, It includes a group control device (1), a backup power supply device (2) and an elevator control device (3), wherein the group control device (1) includes a control operation control module (11) and a group management module (12); The backup power supply device (2) is connected to the control operation module (11) via the communication bus A. The backup power supply device (2) also provides backup power to the group control device (1) and the elevator control device (3) via the backup power line D. The group management module (12) is connected to the elevator control device (3) via communication bus B; The control operation module (11) and the group management module (12) are connected via a communication bus C.

6. The system for controlling the operation of backup power supply for elevator groups according to claim 1, characterized in that, The backup power supply device (2) periodically sends a cut-in signal, remaining power, and power data to the control operation module (11); The control operation module (11) periodically sends control operation signals to the group management module (12); The group management module (12) periodically sends the status data of each elevator to the control and operation module (11).

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