Elevator group backup power supply control operation method and system

Abstract

The invention discloses an elevator group backup power supply control operation method and system, when a backup power supply is switched in and all elevators are in a stop state, the elevators in the group are subjected to base station returning priority ranking, and a plurality of elevators are controlled to return to a base station each time; after all the elevators arrive at the base station, a plurality of elevators are provided for continuous service; comprising a group control device, a backup power supply device and an elevator control device, and the group control device comprises a control operation control module and a group management module; according to the method, the elevators in the group are subjected to base station returning priority ranking by integrating multiple factors, and a plurality of elevators are controlled to return to the base station each time, so that the total base station returning efficiency is improved, the total waiting time of passengers in the car is shortened, and the discomfort of the passengers is reduced; according to the invention, multiple factors are integrated to provide continuous services for a plurality of elevators, and the service level of backup power supply operation is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of elevator applications, and particularly relates to a method and a system for controlling the operation of a backup power supply for an elevator group. Background Art

[0002] In existing elevator group control systems, backup power supplies are configured in some scenarios to enable the elevator group to continue operating at a lower service level after the main power supply fails. For safety reasons, usually after the elevators in the group dock nearby, they are first made to return to the base station in sequence; after all the elevators return to the base station, one of them is allowed to continue service.

[0003] Chinese Patent with publication number CN114906693 A discloses an elevator control method, device, electronic device, and storage medium. After detecting the startup of the backup power supply of the elevator system, it obtains the elevator operation permission and determines the operable elevators in the elevator system, where the backup power supply is used to supply power to the operable elevators with the elevator operation permission; by respectively issuing the elevator operation permission to each of the operable elevators, it controls each of the operable elevators to return to the leveling position in sequence; when detecting that each of the operable elevators has completed returning to the leveling position, by respectively issuing the elevator operation permission to each of the operable elevators, it controls each of the operable elevators to return to the base station in sequence; selects the elevator with the highest gravity sensor reading among the operable elevators as the first target elevator. This patent document makes the backup power supply only supply power to the operable elevators, so the control device needs to be equipped with elevator power supply switching control components for each elevator respectively, increasing the hardware cost; at the same time, when there are people in other carriages, the loss of power of the display device will cause panic among passengers. This patent document controls the operable elevators to return to the leveling position and the base station in sequence, and only considers the gravity sensor reading when selecting the first target elevator, without considering factors such as the position of the carriages, so the overall efficiency is low. When there are passengers in multiple carriages, it will cause a long overall waiting time, resulting in dissatisfaction among passengers. In summary, the elevator power supply switching control components generate hardware costs, and the sequential power supply and control of the operable elevators to return to the leveling position and the base station result in low overall efficiency.

[0004] Therefore, a method and a system for controlling the operation of a backup power supply for an elevator group are urgently needed. Summary of the Invention

[0005] To solve the defects existing in the prior art, the present invention provides a method and a system for controlling the operation of a backup power supply for an elevator group.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] The first object of the present invention is to provide a method for controlling the operation of a backup power supply for an elevator group, including the following steps:

[0008] Step 1: Return to base station control; when the backup power supply is cut in and all elevators are in the parked state, perform a return-to-base station priority ranking on the elevators in the group and control the elevators to return to the base station, which specifically includes the following sub-steps:

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

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

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

[0014] Sub-step 6: When all elevators arrive at the base station, go to Step 2; otherwise, go to Sub-step 3;

[0015] Step 2: Continue service control, which specifically includes the following sub-steps:

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

[0017] Sub-step 8: Command the J elevators to continue service and prohibit the service of the remaining elevators;

[0018] Sub-step 9: When all elevators switch back to the main power supply, go to Step 3; otherwise, go to Sub-step 8;

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

[0020] Preferably, in Step 1, the return-to-base station priority Pi of each elevator is calculated separately in a weighted manner according to the rated speed, the distance between the current floor and the base station, and the current load:

[0021] P i = K 1 - K 2 *(f i - f 0 ) / v i + K 3 *g i

[0022] Where K 1 、K 2 、K3 is a constant, f i is the current floor of the i-th elevator, f 0 is the base station floor, g i is the current load of the i-th elevator.

[0023] Preferably, in step one, determining the number of elevators N that return to the base station simultaneously is obtained based on the output power of the backup power supply, the remaining power, and the elevator power consumption, and determining the elevator numbers of the N elevators is selected according to the return base station sequence X:

[0024]

[0025] Among them, P 1 is the output power of the backup power supply, P 2 is the elevator power consumption, Q is the remaining power of the backup power supply, Q 0 is the minimum power to maintain elevator operation.

[0026] Preferably, in step two, determining the number of elevators J that continue to provide services and the elevator numbers of the J elevators is obtained based on the output power of the backup power supply, the remaining power, and the elevator power consumption:

[0027]

[0028] Among them, P 1 is the output power of the backup power supply, P 2 is the elevator power consumption, Q is the remaining power of the backup power supply, Q 0 is the minimum power to maintain elevator operation.

[0029] The second object of the present invention provides a system for controlling the operation of the backup power supply of an elevator group, including a group control device, a backup power supply device, and an elevator control device. Among them, the group control device includes a control operation control module and a group management module;

[0030] The backup power supply device is connected to the control operation control module through communication bus A, and the backup power supply device provides backup power for the group control device and the elevator control device through backup power supply line D;

[0031] The group management module is connected to the elevator control device through communication bus B;

[0032] The control operation control module is connected to the group management module through communication bus C.

[0033] Preferably, the backup power supply device periodically sends cut-in signals, remaining power, and power data to the control operation control module;

[0034] The control operation control module periodically sends control operation signals to the group management module;

[0035] The group management module regularly sends the status data of each elevator to the control operation control module.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] After the main power supply of the elevator is cut off, during the return-to-base control stage, the present invention comprehensively considers multiple factors to rank the return-to-base priorities of the elevators in the group, and controls several elevators to return to the base each time, improving the overall efficiency of returning to the base, reducing the overall waiting time of the passengers in the car, and reducing the discomfort of the passengers; during the continued service control stage, several elevators are provided for continued service by comprehensively considering multiple factors, improving the service level of the backup power supply operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a flowchart of a method for controlling the operation of a backup power supply for an elevator group according to the present invention;

[0039] Figure 2 is a circuit diagram of a system for controlling the operation of a backup power supply for an elevator group according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0041] Embodiment 1

[0042] Please refer to Figure 1 As shown, this embodiment provides a method for controlling the operation of a backup power supply for an elevator group, including the following steps:

[0043] S1: Return-to-base control. When the backup power supply is cut in and all elevators are in the parked state, the return-to-base priorities of the elevators in the group are ranked, and several elevators are controlled to return to the base each time, specifically including the following sub-steps:

[0044] Sub-step 1: Calculate the return-to-base priority Pi of each elevator, where i = 1, 2,..., M, and M is the total number of elevators in the group; in this embodiment, it is calculated in a weighted manner according to the rated speed, the distance between the current floor and the base station, and the current load:

[0045] P i = K 1 -K 2 *(f i -f 0 ) / v i +K 3 *g i

[0046] Where K 1 、K2 , K 3 is a constant, f i is the current floor of the i-th elevator, f 0 is the base station floor, g i is the current load of the i-th elevator.

[0047] Sub-step 2: Sort according to the return-to-base priority Pi to generate a return-to-base sequence X; in this embodiment, the elevator with the highest priority Pi is ranked first;

[0048] Sub-step 3: Determine the number of elevators N that return to the base station simultaneously and the elevator numbers of the N elevators; in this embodiment, determine the number of elevators N according to the output power of the backup power supply, the remaining power, and the elevator power consumption:

[0049]

[0050] Among them, P 1 is the output power of the backup power supply, P 2 is the elevator power consumption, Q is the remaining power of the backup power supply, Q 0 is the minimum power to maintain elevator operation;

[0051] In this embodiment, select the elevator numbers of the first N elevators from the return-to-base sequence X;

[0052] Sub-step 4: Command the N elevators to return to the base station;

[0053] Sub-step 5: When an elevator arrives at the base station, remove it from the return-to-base sequence X;

[0054] Sub-step 6: When all elevators arrive at the base station, transfer to S2; otherwise, transfer to sub-step 3;

[0055] S2: Continue service control. Specifically, it includes the following sub-steps:

[0056] Sub-step 7: Determine the number of elevators J that continue to provide service and the elevator numbers of the J elevators; in this embodiment, determine the number of elevators J according to the output power of the backup power supply, the remaining power, and the elevator power consumption:

[0057]

[0058] Among them, P 1 is the output power of the backup power supply, P 2 is the elevator power consumption, Q is the remaining power of the backup power supply, Q 0 is the minimum power to maintain elevator operation;

[0059] In this embodiment, the elevator numbers of J elevators are selected from the elevators that return to the base station last; as an alternative, the elevator numbers of J elevators may be selected from the elevators that return to the base station first, or J elevators may be selected in the order of the elevator numbers;

[0060] Sub-step 8: commanding the J elevators to continue to serve, and prohibiting the services of the remaining elevators;

[0061] Sub-step 9: When all elevators are switched back to the main power supply, go to S3; otherwise go to sub-step 8;

[0062] S3: Exit controlled operation. Release the controlled operation signal and command each elevator to resume automatic operation.

[0063] Example 2

[0064] See also Figure 2 As shown, this embodiment provides a system for controlling the operation of a backup power supply of an elevator group, comprising a group control device 1, a backup power supply device 2 and an elevator control device 3, wherein the group control device 1 comprises a control operation control module 11 and a group management module 12;

[0065] The backup power supply device 2 is connected to the control operation control module 11 via a communication bus A;

[0066] In this embodiment, the communication bus A adopts the CAN bus; alternatively, other buses such as RS485, RS232, etc. may also be adopted;

[0067] The backup power supply device 2 provides backup power to the group control device 1 and the elevator control device 3 via a backup power supply line D;

[0068] The group management module 12 is connected to the elevator control device 3 via a communication bus B;

[0069] In this embodiment, the communication bus B adopts the CAN bus; alternatively, other buses such as RS485, LonWorks, etc. may also be adopted;

[0070] The control operation control module 11 is connected to the group management module 12 via a communication bus C.

[0071] In this embodiment, the communication bus C adopts the SPI bus; alternatively, other buses such as RS485, RS232, etc. may also be adopted;

[0072] In a specific embodiment, the backup power supply device 2 regularly sends a cut-in signal, remaining power, power supply power and other data to the management operation control module 11;

[0073] The control operation control module 11 sends a control operation signal to the group management module 12 at a regular interval;

[0074] 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.

[0075] The group management module 12 regularly sends the status data of each elevator to the control operation control module 11.

[0076] In this embodiment, the status data of the elevator includes the rated speed of the elevator, the current floor, the running direction, the running speed, the load, etc.

[0077] The core point of the present invention is that: for the elevators in the group, the priority of returning to the base station is sorted by considering multiple factors, and several elevators are controlled to return to the base station each time, which improves the overall efficiency of returning to the base station, reduces the overall waiting time of the passengers in the car, and reduces the discomfort of the passengers; several elevators are provided to continue to serve by considering multiple factors, which improves the service level of the backup power supply operation.

[0078] Finally, it should be noted that: the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling the operation of a backup power supply of an elevator group, characterized in that: The following steps are involved: Step 1: Return to base station control: When the backup power supply is turned on and all elevators are in the parked 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, which specifically includes the following sub-steps: Sub-step 1: Calculate the return priority Pi of each elevator, i = 1, 2, ..., M, where M is the total number of elevators in the group; Sub-step 2: Sorting according to the return base station priority Pi to generate a return base station sequence X; Sub-step 3: Determine the number of elevators N that return to the base station at the same time and the elevator numbers of the N elevators; Sub-step 4: commanding 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-to-base station sequence X; Sub-step 6: When all elevators arrive at the base station, proceed to step 2; otherwise, proceed to sub-step 3; Step 2: Continue with service control, which includes the following sub-steps: Sub-step 7: Determine the number of elevators J that continue to provide service and the elevator numbers of the J elevators; Sub-step 8: commanding the J elevators to continue to serve, and prohibiting the remaining elevators from serving; Sub-step 9: When all elevators are switched back to the main power supply, proceed to step 3; otherwise, proceed to sub-step 8; Step 3: Exit controlled operation; the controlled operation control module releases the controlled operation signal, and the group management module instructs each elevator to resume automatic operation.

2. A method for controlling the operation of a backup power supply of an elevator group according to claim 1, characterized in that: In step 1, the priority Pi of each elevator returning to the base station is calculated in a weighted manner 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 Among them, K1, K2, K3 are constants, f i is the current floor of the ith elevator, f0 is the base station floor, g i is the current load of the i-th elevator.

3. The method for controlling the operation of the backup power supply of an elevator group according to claim 1, characterized in that: In step 1, the number of elevators N that return to the base station at the same time is determined based on the output power of the backup power supply, the remaining power, and the power consumption of the elevators. The elevator numbers of the N elevators are determined based on the return sequence X: Among them, P1 is the output power of the backup power supply, P2 is the power consumption of the elevator, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain the operation of the elevator.

4. The method for controlling the operation of a backup power supply of an elevator group according to claim 1, characterized in that: In step 2, the number of elevators J that continue to provide service and the elevator numbers of the J elevators are determined based on the output power of the backup power supply, the remaining power and the power consumption of the elevators: Among them, P1 is the output power of the backup power supply, P2 is the power consumption of the elevator, Q is the remaining power of the backup power supply, and Q0 is the minimum power required to maintain the operation of the elevator.

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

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

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