Method for dispatching on-call elevators

Abstract

The application discloses a kind of dispersed standby elevator allocation method, elevator allocation system receives new lift signal, respectively calculate the difference index of each standby elevator as the response elevator of the lift signal, and select the final response elevator according to the difference index, the difference index is the index indicating the difference between standard standby floor distribution and actual floor distribution, the actual floor distribution refers to the floor distribution composed of the floor where the response elevator is located after completing the response of the lift signal and the floor where other standby elevators are located.The application can realize the elevator allocation method of dispersed standby while completing passenger transport, to further reduce the energy consumption of elevator.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator technology field, and particularly to a kind of dispersed standby elevator deployment method BACKGROUND

[0002] The existing elevator group management method is generally by selecting the elevator as the response elevator of the call signal from each elevator appropriately for the call signal, to improve the elevator operation efficiency, shorten the waiting time of the passenger waiting for the elevator, reduce the elevator energy consumption and other goals, to achieve the effect of relieving the passenger flow congestion during peak hours. Although the elevator group management method with the main goal of improving the elevator operation efficiency and shortening the waiting time of the passenger waiting for the elevator is generally for passenger transport during large passenger flow period, even if each elevator is in idle state, when a call signal appears, the group management method can effectively shorten the waiting time of the passenger waiting for the elevator by appropriately selecting the response elevator.

[0003] On the other hand, in order to shorten the waiting time of the passenger from the time when the passenger registers the call signal to the time when the response elevator arrives at the departure floor of the passenger during the passenger flow idle period, the standby floor is usually appropriately set, and each elevator is controlled to stop at the standby floor, so that when the passenger registers the call signal, the elevator can immediately or soon arrive at the departure floor of the passenger. However, the existing dispersed standby is usually achieved by controlling each elevator to move to the predetermined dispersed standby floor after the elevator enters the standby mode in the idle state, so as to achieve the purpose of dispersed standby, such as the published document CN201110241188.5. SUMMARY

[0004] The technical problem to be solved by the present application is how to provide an elevator deployment method that can realize dispersed standby while completing passenger transport, to further reduce the energy consumption of the elevator.

[0005] To solve the above technical problem, the present application provides a kind of dispersed standby elevator deployment method, the elevator deployment system receives a new call signal, calculates the difference index of each standby elevator as the response elevator of the call signal, and selects the final response elevator according to the difference index, the difference index is an index representing the difference between the standard standby floor distribution and the actual standby floor distribution, and the actual standby floor distribution refers to the floor distribution composed of the floor where the response elevator is located after responding to the call signal and the floor where other standby elevators are located.

[0006] Preferably, the standby elevator corresponding to the smallest difference index is selected as the final response elevator.

[0007] Preferably, the evaluation method of selecting the standby elevator corresponding to the minimum difference index comprises the following steps: step S1, pre-establishing the difference index, and selecting one of the standby elevators as the response elevator for evaluation; step S2, determining the current stop floors of the other standby elevators and the stop floors after the response elevator completes the transportation, and forming the actual stop floor distribution; step S3, comparing and determining the difference between the actual stop floor distribution and the pre-stored standard standby stop floor distribution, and outputting the difference index; step S4, repeating steps S2 to S3 to obtain the difference index when the other standby elevators are taken as the response elevator respectively; and step S5, selecting the standby elevator corresponding to the minimum difference index as the final response elevator.

[0008] Preferably, the method for establishing the difference index comprises the following steps: step S1A1, enumerating all the corresponding relationships between the actual standby floor distribution and the standard standby floor distribution; step S1A2, calculating the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution respectively; step S1A3, calculating the sum of the floor differences of all the standby elevators; and step S1A4, taking the smallest sum of the floor differences as the difference index.

[0009] Preferably, when the standard standby floor distribution is to divide all the floors of the entire building into multiple regions, and at least one standby elevator is provided in each region, it is considered that the requirement of scattered standby is met, and the number of regions without standby elevators is taken as the difference index.

[0010] Preferably, the method for establishing the difference index comprises the following steps: step S1B1, enumerating all the corresponding relationships between the actual standby floor distribution and the standard standby floor distribution; step S1B2, calculating the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution respectively; step S1B3, multiplying the floor difference by the corresponding reference probability to obtain the weighted floor difference, wherein the reference probability is the probability of the floor in the actual standby floor distribution appearing a call signal; step S1B4, calculating the sum of the weighted floor differences of all the standby elevators; and step S1B5, taking the smallest sum of the weighted floor differences as the difference index.

[0011] Preferably, when the standard standby floor distribution is to divide all the floors of the entire building into multiple regions, and at least one standby elevator is provided in each region, it is considered that the requirement of scattered standby is met, and first, for each region without standby elevators, the sum of the probabilities of the floors in the region appearing a call signal is calculated and taken as a first sum, and then the sum of the first sums corresponding to the regions is calculated and taken as the difference index.

[0012] Preferably, the standby elevators include actual standby elevators that have no current transportation task and elevators that are performing a transportation task and meet a preset condition.

[0013] Preferably, the preset condition is that a moving time, a moving distance or energy consumption required for the elevator performing a transportation task to move to the floor where the call signal is generated after completing the current transportation task is less than a preset threshold.

[0014] Preferably, the preset condition is that a difference between a minimum difference index corresponding to the elevator performing a transportation task and a minimum difference index when the standby elevators are selected as the responding elevators is greater than a threshold.

[0015] Preferably, when the minimum difference index does not exceed a preset threshold, the standby elevator corresponding to the minimum difference index is selected as the final responding elevator; when the minimum difference index exceeds the preset threshold, the final responding elevator is selected according to the following steps:

[0016] Step T1, selecting a standby elevator as the responding elevator of the call signal; Step T2, determining an actual elevator distribution formed after the responding elevator completes the transportation of the call signal; Step T3, making a scattered standby control scheme for the actual elevator distribution; Step T4, calculating a sum of a cost paid by the responding elevator for completing the call signal and a cost of scattered standby as a total cost; Step T5, traversing the total cost when each standby elevator is selected as the responding elevator of the call signal; Step T6, selecting the responding elevator corresponding to the minimum total cost as the final responding elevator. DETAILED DESCRIPTION

[0017] The embodiments of the present application are described below in detail through specific examples, and other advantages and technical effects of the present application can be fully understood by those skilled in the art based on the disclosure. The present application can also be implemented or applied through different embodiments, and each detail in the present application can be applied based on different viewpoints, and various modifications or changes can be made without departing from the general design idea of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict. The following exemplary embodiments of the present application can be implemented in various forms, and should not be interpreted as being limited to the specific examples described herein. It should be understood that these examples are provided to make the disclosure of the present application complete and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0018] Embodiment 1

[0019] The embodiment provides a dispersed standby elevator dispatching method. After receiving a new elevator call signal, an elevator dispatching system calculates difference indexes of each standby elevator as a response elevator of the elevator call signal, and selects a final response elevator according to the difference indexes. The difference index is an index representing a difference between a standard standby floor distribution and an actual floor distribution. The actual floor distribution is a floor distribution composed of a floor where the response elevator is located after completing response to the elevator call signal and floors where other standby elevators are located. The embodiment selects a standby elevator corresponding to the smallest difference index as the final response elevator.

[0020] The dispersed elevator dispatching method of the embodiment essentially minimizes a difference between an actual floor distribution of all elevators and a standard standby floor distribution by appropriately selecting a response elevator, so that a floor where the response elevator is located after completing passenger transportation (i.e., a destination floor of the passenger) and floors where other non-response elevators are located together form the actual floor distribution.

[0021] In the embodiment, each elevator under the management of an elevator group is in a standby state. When a new elevator call signal registered by a passenger using a destination registration device is received, an elevator dispatching method selects one of the elevators as a response elevator of the elevator call signal. The selection is different from the selection of a conventional group management system according to the shortest waiting time, the highest elevator operation efficiency, the lowest elevator energy consumption, and the like. The selection unifies two things, elevator dispatching and dispersed standby of elevators, which are implemented independently in the prior art, and simultaneously completes two different things, passenger transportation and dispersed standby, by appropriately selecting a response elevator, so as to achieve two different purposes and obtain two different effects.

[0022] The evaluation method for selecting the standby elevator corresponding to the smallest difference index includes the following steps.

[0023] Step S1, the difference index is established in advance, and one of the standby elevators is selected as a response elevator for evaluation.

[0024] Step S2, current floors where other standby elevators are located and a floor where the response elevator is located after completing transportation are determined, and the actual floor distribution is formed.

[0025] Step S3, a difference between the actual floor distribution and a standard standby floor distribution saved in advance is compared and determined, and the difference index is output.

[0026] Step S4, steps S2 to S3 are repeated to obtain the difference indexes of other standby elevators as the response elevators.

[0027] Step S5, selecting the standby elevator corresponding to the minimum difference index as the final response elevator.

[0028] Suppose that there are four elevators A, B, C and D in total and all are idle at their current floors. At this time, a call signal from the 5th floor to the 10th floor appears. The question now is which of the four elevators should be selected to respond to the call signal? In order to achieve the intended purpose and effect, suppose that the elevator A is now selected as the response elevator, and the evaluation result when the elevator A is selected as the response elevator is evaluated.

[0029] The evaluation method is as follows:

[0030] Step S1, establishing an index for representing the difference between the standard standby floor distribution and the actual floor distribution in advance;

[0031] Step S2, determining the current floor of the elevators B, C and D and the floor after the elevator A completes the transportation (i.e. the destination floor of the passengers - the 10th floor), and outputting the actual floor distribution of the travel of the combination of the floors of the elevators;

[0032] Step S3, comparing and determining the difference between the actual floor distribution and the standard standby floor distribution in advance, and outputting the difference index;

[0033] Step S4, repeating steps S2 to S3 to obtain the difference index when the other standby elevators are selected as the response elevators respectively;

[0034] Step S5, selecting the standby elevator corresponding to the minimum difference index as the final response elevator.

[0035] For the index for representing the difference between the standard standby floor distribution and the actual floor distribution, the method for establishing the difference index includes the following methods:

[0036] The first method for establishing the difference index is as follows:

[0037] Step S1A1, enumerating all the corresponding relationships between the actual standby floor distribution and the standard standby floor distribution;

[0038] Step S1A2, calculating the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution respectively;

[0039] Step S1A3, calculating the sum of the floor differences of all the standby elevators;

[0040] Step S1A4, taking the smallest sum of the floor differences as the difference index.

[0041] The second method for establishing the difference index is as follows:

[0042] When the standard standby floor distribution is to divide all floors of the entire building into multiple areas, and at least one standby elevator is provided in each area, it is considered that the dispersion standby requirement is satisfied. In this case, the number of areas not containing standby elevators is used as the difference index.

[0043] The third method for establishing the difference index is:

[0044] Step S1B1, enumerate all the corresponding relationships between the actual standby floor distribution and the standard standby floor distribution;

[0045] Step S1B2, calculate the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution, respectively.

[0046] Step S1B3, multiply the floor difference by the corresponding reference probability to obtain the weighted floor difference, wherein the reference probability is the probability of the floor in the actual standby floor distribution generating a call signal.

[0047] Step S1B4, calculate the sum of the weighted floor differences of all standby elevators.

[0048] Step S1B5, take the smallest sum of the weighted floor differences as the difference index.

[0049] The fourth method for establishing the difference index is:

[0050] When the standard standby floor distribution is to divide all floors of the entire building into multiple areas, and at least one standby elevator is provided in each area, it is considered that the dispersion standby requirement is satisfied. In this case, first, for each area not containing standby elevators, calculate the sum of the probabilities of each floor in the area generating a call signal and take it as the first sum, then calculate the sum of the first sums corresponding to each area and take it as the difference index.

[0051] Embodiment 2

[0052] Embodiment 1 assumes that each elevator in the elevator group management is in standby state, and this embodiment further considers the elevators executing a transport task that satisfy a preset condition. That is, standby elevators include actual standby elevators that do not currently have a transport task and elevators executing a transport task that satisfy a preset condition.

[0053] The preset condition is that the moving time, moving distance, or energy consumption required for the elevator executing a transport task to move to the floor where the call signal is generated after completing the current transport task is less than a preset threshold.

[0054] The other preset condition is that the difference between the minimum difference index corresponding to the elevator performing the transport task and the current standby elevator in standby state and the minimum difference index when only the standby elevator is selected as the responding elevator is greater than a threshold value. (In essence, whether the current elevator performing the transport task is included in the selection range of the responding elevator.)

[0055] Embodiment 3

[0056] This embodiment further considers the following on the basis of the foregoing embodiments: when the method in the foregoing embodiments is applied to control the responding elevator after the corresponding completion of the call signal, the difference between the actual dispersed standby distribution obtained and the standard dispersed standby is too large to meet the dispersed standby requirement, and thus dispersed standby control needs to be performed again. In this case, the allocation plus dispersed control scheme (first scheme) obtained by adding the allocation result for the call signal to the subsequent dispersed standby control performed originally is not necessarily optimal, and the cost paid when other elevators are selected as the responding elevator of the call signal and the subsequent dispersed standby control (second scheme) is performed can be less than the cost paid when the first scheme is performed.

[0057] Therefore, it is first determined whether the minimum difference index exceeds the preset threshold value. When the minimum difference index does not exceed the preset threshold value, the standby elevator corresponding to the minimum difference index is selected as the final responding elevator; when the minimum difference index exceeds the preset threshold value, the final responding elevator is selected according to the following steps:

[0058] Step T1, a standby elevator is selected as the responding elevator of the call signal;

[0059] Step T2, the actual elevator distribution formed after the responding elevator completes the transport of the call signal is determined;

[0060] Step T3, a dispersed standby control scheme is formulated for the actual elevator distribution;

[0061] Step T4, the sum of the cost paid by the responding elevator to complete the call signal and the cost of dispersed standby is calculated as the total cost;

[0062] Step T5, the total cost when each standby elevator is selected as the responding elevator of the call signal is traversed;

[0063] Step T6, the responding elevator corresponding to the minimum total cost is selected as the final responding elevator.

[0064] Here, the cost can include at least one of time (total moving time of the elevator or waiting time of the passenger), energy consumption, moving distance, number or times of elevators that need to be moved, and the like.

[0065] The application is described in detail above by specific embodiments and examples, but these do not constitute a limitation on the application. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the application, and these should also be considered as within the scope of protection of the application.

Claims

1. A method for dispatching distributed standby elevators, characterized in that, After receiving a new call signal, the elevator dispatching system calculates the difference index of each standby elevator when it responds to the call signal, and selects the final responding elevator based on the difference index. The difference index is an indicator that characterizes the difference between the standard standby floor distribution and the actual floor distribution. The actual floor distribution refers to the floor distribution formed by the floor where the responding elevator responds to the call signal and the floors where other standby elevators are located. The standby elevator with the smallest difference index is selected as the final responding elevator. The evaluation method for selecting the standby elevator corresponding to the minimum difference index includes the following steps: Step S1: Establish the difference index in advance, and select one standby elevator from multiple standby elevators as the responding elevator for evaluation; Step S2: Determine the current stopping floors of other standby elevators and the stopping floors of the responding elevator after completing the transport, thus forming the actual stopping floor distribution. Step S3: Compare and determine the difference between the actual parking floor distribution and the pre-saved standard standby parking floor distribution, and output the difference index; Step S4: Repeat steps S2 to S3 to obtain the difference index when other standby elevators are used as responding elevators. Step S5: Select the standby elevator corresponding to the smallest difference index as the final response elevator; The method for establishing the difference index is any one of the following methods: Method 1: When the standard standby floor distribution divides all floors of the entire building into multiple areas, and each area has at least one standby elevator, it is considered to meet the requirements for decentralized standby. In this case, the number of areas that do not contain standby elevators is used as the difference indicator. Method 2: Step S1B1: Enumerate all the correspondences between the actual standby floor distribution and the standard standby floor distribution; Step S1B2: Calculate the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution. Step S1B3: Multiply the floor difference by the corresponding reference probability to obtain the weighted floor difference, where the reference probability is the probability of a call signal appearing on a floor in the actual standby floor distribution. Step S1B4: Calculate the sum of weighted floor differences for all standby elevators; Step S1B5: Take the sum of the smallest weighted floor differences as the difference index; Method 3: When the standard standby floor distribution divides all floors of the entire building into multiple areas, and each area has at least one standby elevator, it is considered to meet the requirements of distributed standby. First, for each area that does not contain a standby elevator, calculate the sum of the probabilities of each floor in that area having a call signal and use it as the first sum. Then, calculate the sum of the first sums corresponding to each area and use it as the difference index.

2. The method for dispatching distributed standby elevators according to claim 1, characterized in that, The standby elevators include actual standby elevators that are not currently carrying any transport tasks and elevators that are carrying out transport tasks and meet preset conditions.

3. The method for dispatching distributed standby elevators according to claim 2, characterized in that, The preset condition is that the time, distance, or energy consumption required for the elevator to move to the floor where the call signal was generated after the elevator has completed its current transport task is less than a preset threshold.

4. The method for dispatching distributed standby elevators according to claim 2, characterized in that, The preset condition is that the difference between the minimum difference index between the elevator performing the transportation task and the standby elevator currently in standby mode and the minimum difference index when only standby elevators are selected as the response elevators is greater than a threshold.

5. A method for dispatching distributed standby elevators, characterized in that, Upon receiving a new call signal, the elevator dispatching system calculates the difference index for each standby elevator when it responds to the call signal. Based on this difference index, it selects the final responding elevator. The difference index characterizes the difference between the standard standby floor distribution and the actual floor distribution. The actual floor distribution refers to the floor distribution formed by the responding elevator's current location after responding to the call signal, along with the floors of other standby elevators. When the smallest difference index does not exceed a preset threshold, the standby elevator corresponding to the smallest difference index is selected as the final responding elevator. When the smallest difference index exceeds the preset threshold, the final responding elevator is selected according to the following steps: Step T1: Select a standby elevator as the responding elevator for the call signal; Step T2: Determine the actual elevator distribution after the responding elevators have completed their transport based on the call signal; Step T3: Develop a distributed standby control scheme based on the actual elevator distribution. Step T4: Calculate the total cost by summing the cost of responding to the elevator call signal and the cost of distributed standby. Step T5: Iterate through each standby elevator and calculate the total cost when it is used as a responding elevator for a call signal. Step T6: Select the response elevator corresponding to the minimum total cost as the final response elevator.

6. The method for dispatching distributed standby elevators according to claim 5, characterized in that, The evaluation method for selecting the standby elevator corresponding to the minimum difference index includes the following steps: Step S1: Establish the difference index in advance, and select one standby elevator from multiple standby elevators as the responding elevator for evaluation; Step S2: Determine the current stopping floors of other standby elevators and the stopping floors of the responding elevator after completing the transport, thus forming the actual stopping floor distribution. Step S3: Compare and determine the difference between the actual parking floor distribution and the pre-saved standard standby parking floor distribution, and output the difference index; Step S4: Repeat steps S2 to S3 to obtain the difference index when other standby elevators are used as responding elevators. Step S5: Select the standby elevator corresponding to the smallest difference index as the final response elevator.

7. The method for dispatching distributed standby elevators according to claim 6, characterized in that, The method for establishing difference indicators is as follows: Step S1A1: Enumerate all the correspondences between the actual standby floor distribution and the standard standby floor distribution; Step S1A2: Calculate the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution. Step S1A3: Calculate the sum of the floor differences for all standby elevators; Step S1A4: The sum of the smallest floor differences is taken as the difference index.

8. The method for dispatching distributed standby elevators according to claim 6, characterized in that, The method for establishing the difference index is as follows: when the standard standby floor distribution divides all floors of the entire building into multiple areas, and each area has at least one standby elevator, it is considered to meet the requirements of decentralized standby. In this case, the number of areas that do not contain standby elevators is used as the difference index.

9. The method for dispatching distributed standby elevators according to claim 6, characterized in that, The method for establishing difference indicators is as follows: Step S1B1: Enumerate all the correspondences between the actual standby floor distribution and the standard standby floor distribution; Step S1B2: Calculate the floor difference between the floors in the actual standby floor distribution and the floors in the standard standby floor distribution. Step S1B3: Multiply the floor difference by the corresponding reference probability to obtain the weighted floor difference, where the reference probability is the probability of a call signal appearing on a floor in the actual standby floor distribution. Step S1B4: Calculate the sum of weighted floor differences for all standby elevators; Step S1B5: The sum of the smallest weighted floor differences is used as the difference index.

10. The method for dispatching distributed standby elevators according to claim 6, characterized in that, The method for establishing the difference index is as follows: when the standard standby floor distribution divides all floors of the entire building into multiple areas, and there is at least one standby elevator in each area, it is considered that the distributed standby requirement is met. First, for each area that does not contain a standby elevator, the sum of the probabilities of each floor in that area having an elevator call signal is calculated and used as the first sum. Then, the sum of the first sums corresponding to each area is calculated and used as the difference index.

11. The method for dispatching distributed standby elevators according to claim 5, characterized in that, The standby elevators include actual standby elevators that are not currently carrying any transport tasks and elevators that are carrying out transport tasks and meet preset conditions.

12. The method for dispatching distributed standby elevators according to claim 11, characterized in that, The preset condition is that the time, distance, or energy consumption required for the elevator to move to the floor where the call signal was generated after the elevator has completed its current transport task is less than a preset threshold.

13. The method for dispatching distributed standby elevators according to claim 11, characterized in that, The preset condition is that the difference between the minimum difference index between the elevator performing the transportation task and the standby elevator currently in standby mode and the minimum difference index when only standby elevators are selected as the response elevators is greater than a threshold.