JP5239215B2 - Multi-car elevator - Google Patents

Description

  The present invention provides a control device capable of realizing high-efficiency operation in a multi-car type elevator having a plurality of shafts as one bank and a plurality of cars traveling independently in each shaft.

  Various forms have been proposed for so-called multi-car elevators, where multiple hoistways (shafts) are used as one bank, and each car is provided with a plurality of independently traveling cars. There are a vertical and horizontal movement type that enables not only vertical movement in the inside but also horizontal movement between the shafts, and a vertical movement type in which each shaft is independent and horizontal movement between the shafts is impossible. In the latter, there is no need to consider horizontal movement, so the overall structure is simple compared to the former vertical / horizontal movement type, which is advantageous in terms of cost and safety, but can not pass between cars. Therefore, the driving efficiency is greatly affected by the operation control method and call allocation.

  Conventionally, as the operation control system of the multi-car system elevator only moving up and down, a “simultaneous inversion system” and a “zone division system” have been considered. In the former method, a common driving direction is set for all cars in the shaft, and a car with or without a call assigned can be called in that direction while moving in the common driving direction. When service is done sequentially and all calls in that direction are completed, all the cars reverse the driving direction at once, this time, the opposite directions are serviced sequentially, and this is repeated to collide with each other. This ensures that all calls can be serviced by direction.

In the latter method, all the service floors are divided into multiple zones for the number of cars, and each car is limited to moving within that zone only for the zone to which it belongs. So that all calls in the zone can be serviced.
JP 06-305648 A JP 2006-103887 A

  In the up and down movement type multi-car type elevator, the former inversion method is effective for the so-called up-peak traffic situation where most calls start from the standard floor, such as when going to work. Performance can be obtained. However, due to the restriction that all the cars in the shaft can only operate in the same driving direction, the driving efficiency deteriorates, especially in traffic situations where many upward and downward calls are mixed. Deteriorate.

  In addition, the latter zoning method is effective in a time zone in which a plurality of companies occupy a predetermined zone in a shared building and the movement in each zone is mainly performed. The function cannot be fully exerted in a time zone in which the excess movement is large or in a building where there is not much movement in the zone.

  For this reason, measures such as switching the operation method according to the time zone can be considered, but for example, even during up-peak hours, not all calls have the reference floor as the departure floor, and there are not a few inter-floor traffic on the intermediate floor In addition, even if movement within the zone is the main time zone, movement beyond the zone also occurs simultaneously. Therefore, even if the operation control method is switched according to the traffic situation, there is a problem that it is difficult to efficiently serve all calls in that time zone with only one operation method.

The present invention classifies unanswered calls common to the banks into predetermined categories in a multi-car elevator having a plurality of shafts as one bank and a plurality of cars traveling independently in each shaft. Call classification means, shaft allocation means for allocating classified unanswered calls to any shaft according to the category, and operation pattern designation means for specifying an appropriate operation pattern for each shaft according to the category of the assigned call The operation pattern includes a pattern in which the shaft is divided into zones, and a single car belonging to the zone operates in the zone, and a plurality of cars belonging to the zone are divided into one by dividing the shaft into zones. A pattern for operating the zone as a set and a plurality of cars belonging to the shaft as one set , A pattern that runs the those equipped with.

  According to the present invention, it is possible to respond flexibly and efficiently to various traffic situations that are difficult to handle with the conventional single operation control method, and it is possible to apply a multi-car system elevator in a wider range. It becomes.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a diagram showing the overall configuration of a multi-car system elevator according to the present invention. As an example, four cars a1 to four shafts A, B, and C each having a service floor from the first floor to the 40th floor. The case where a4, b1 to b4, and c1 to c4 are put into service is shown. For convenience, the first to tenth floors are referred to as zone Z1, the eleventh to twentieth floors as zone Z2, the 21st to 30th floors as zone Z3, and the 31st to 40th floors as zone Z4.

  FIG. 2 is a diagram showing a control system configuration of the multicar elevator according to the present invention. In FIG. 2, 11 is an operation control device that controls the four cars of the shaft A in a specified operation pattern, 12 is the four cars of the shaft B, and 13 is the four cars of the shaft C. An operation control device 20 that controls each of the designated operation patterns, 20 is provided in each floor common to each shaft A to C, and a destination floor registration device (only one for instructing the destination floor at the landing) It is shown in the figure and the rest is omitted).

  30 is a group management control device that assigns hall calls common to the shafts A to C to a predetermined category and assigns them to each shaft, and designates an operation pattern of each shaft according to the assigned category. A call registration means 31 for registering the call instructed in the above and maintaining the registration state until the call is serviced, a traffic demand determination means 32 for determining the current traffic demand status from the call occurrence status, etc. Call classification means 33 that classifies calls of responses into predetermined categories, shaft allocation means 34 that allocates calls classified into categories to shafts by category, and designates an operation pattern of each shaft according to the category of the allocated calls. The operation pattern specifying means 35 and the input / output interface 36 are included.

In the above configuration, the operation of the present invention will be described with reference to FIGS. 1 and 2 described above and FIG.
First, in step S1, each shaft is initially operated in a predetermined operation pattern, for example, the above-described simultaneous inversion method. Next, in step S2, the presence / absence of uneven traffic demand is determined from the number of calls by zone, etc., by the traffic condition determination means, and while the traffic demand of the entire building is uniform and uneven, return to step S1 Continue the state. The determination of the traffic situation can be detected based on the frequency of calls within each zone or between zones, the ratio of the number of unanswered calls, the average waiting time or the distribution of the load state of each car. Then, the traffic demand is unevenly distributed over time. For example, if it is determined that the ratio of the number of unanswered calls in a certain zone or other zones exceeds a predetermined value, and the traffic demand is unevenly distributed, the process proceeds to step S3. Then, all unanswered calls are sorted into predetermined categories.
Here, call classification by category will be explained. FIG. 4 is a diagram showing an example of the number of unanswered calls for each zone at a certain point in time, with the horizontal axis as the call departure floor and the vertical axis as the call destination floor. The number of unanswered calls with the floor as the destination floor and any floor in the zone Z3 as five destinations, the floor in the zone Z3 as the departure floor, and the floor in the zone Z2 as the destination floor This indicates that the number of calls is three, and at this time, the number of unanswered calls with any floor in the zone Z1 as the departure floor and any floor in the zone Z4 as the destination floor is 8 The traffic demand between the individual and this zone is the largest.

  FIG. 5 shows an example in which the calls shown in FIG. 4 are classified into three categories as an example. FIG. 5A shows the calls in FIG. 4 in which the departure floor and the destination floor belong to the same zone as category 1, and only calls belonging to this category are extracted from the calls in FIG. Similarly, in FIG. 5B, both the departure floor and the destination floor are in the lower zone (zone Z1 or Z2), or the departure floor and the destination floor are both in the upper zone (zone Z3 or Z4). Calls belonging to category 1 are excluded from calls belonging to category 1, and are classified as category 2 and extracted from the calls in FIG. Figure 5 (c) shows a call where the departure floor belongs to the lower zone (zone Z1 or Z2) and the destination floor belongs to the upper zone (zone Z3 or Z4), or the departure floor belongs to the upper zone and the destination floor belongs to the lower zone. This is category 3, which is extracted from the call in FIG. That is, as a matter of course, the sum of the calls shown in FIGS. 5A to 5C matches the number of calls shown in FIG.

  Returning to FIG. 3, if it is determined in step S2 that the traffic demand has increased, in step S3, the unanswered calls at that time are classified into any of the above categories 1 to 3.

  In step S4, the classified call of each category is assigned to each shaft by category. For example, here, a call belonging to category 1 is assigned to shaft A, a call belonging to category 2 is assigned to shaft B, a call belonging to category 3 is assigned to shaft C, and a call is assigned to each shaft by category.

  In step S5, the most suitable operation pattern is designated for each shaft according to the assigned category. For example, for shaft A to which category 1 calls are assigned, only calls that move within the same zone are subject to service, so the shaft is divided into zones Z1 to Z4 as shown in FIG. However, if the cars a1 to a4 specify the operation pattern of the zone division method in which only the respective zones are serviced, each car can move freely within its own zone as shown in the operation diagram of FIG. 6 (b). Therefore, all calls can be efficiently serviced without the cars colliding with each other.

  For the shaft B to which category 2 is assigned, the car moves only between upper zones (between zones Z3 and Z4) or between lower zones (between zones Z1 and Z2). As shown in FIG. 7 (a), the shaft is divided into two upper and lower sectors, and cars b3 and b4 are put into service in the upper sector, and cars b1 and b2 are put into service in the lower sector. Then, by setting the cars b1 and b2 as a set and the cars b3 and b4 as a set and specifying the operation pattern of the above-described simultaneous inversion method for each sector, for example, as shown in the operation diagram of FIG. The sector can freely set the driving direction, and can operate efficiently.

Similarly, for a shaft C that is assigned a category 3 call, the car is intended only for calls with a long lift that travel from the upper zone to the lower zone, or from the lower zone to the upper zone. Therefore, as shown in FIG. 8 (a), the four cars c1 to c4 are put into service without dividing the shaft as a whole, and the four cars are combined into one set, for example, the above-mentioned simultaneous Specify the reverse operation pattern. By doing in this way, as shown in the operation diagram of FIG. 8 (b), even if the driving direction of the four cars is always the same, only calls with a long lifting distance are targeted for service. Efficient operation is possible.
In FIG. 6A, the zones correspond to the four sectors.

Other Embodiments In the above-described embodiment, the case where the number of shafts is three and four cars are provided in one shaft has been described. Of course, the number of shafts and the number of cars are not limited to the above embodiments. Needless to say.

  Further, in the above embodiment, only when traffic-importance is unevenly distributed, calls are classified into predetermined categories and assigned to each shaft, but unanswered calls are always classified into categories regardless of traffic conditions. It is also possible to assign to each shaft and specify an appropriate operation pattern for each shaft accordingly.

  In addition, the call category is not limited to the above example. For example, at the time of up-peaking, calls are divided into two categories: those whose departure floor is the reference floor and those whose departure floor is not, and calls whose reference floor is the departure floor. It may be possible to assign multiple shafts to a single category so that the service category is given priority, and the operation pattern is not limited to the simultaneous reversal method and zone division method described above. Various operation patterns can be considered depending on the category.

In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

It is a figure showing the whole multi-car system elevator composition concerning the present invention. It is a figure which shows the control system structure of the multi-car system elevator which concerns on this invention. It is a flowchart which shows the process sequence of the group management control apparatus 30 which concerns on this invention. It is the figure which showed the number of the unanswered calls according to the zone in a certain time for demonstrating this invention. It is the figure which showed the example which classified the call shown in FIG. 4 into three categories 1-3. FIG. 6 is a diagram illustrating an example of an operation pattern suitable for a category 1 call in FIG. FIG. 6 is a diagram illustrating an example of an operation pattern suitable for a category 2 call in FIG. FIG. 6 is a diagram illustrating an example of an operation pattern suitable for a category 3 call in FIG.

Explanation of symbols

A to C Shafts a1 to a4, b1 to b4, c1 to c4 Cars 11 to 13 Operation control device 20 Destination floor registration device 30 Group management control device 31 Call registration means 32 Traffic demand determination means 33 Call separation means
34 Shaft allocation means 35 Operation pattern designation means

Claims (3)

In a multi-car type elevator having a plurality of shafts as one bank and a plurality of cars traveling independently in each shaft, call classification means for classifying unanswered calls common to the banks into predetermined categories Shaft allocation means for assigning classified unanswered calls to any of the shafts according to the category, and operation pattern designation means for designating an appropriate operation pattern for each shaft according to the category of the assigned call , The operation pattern includes a pattern in which the shaft is divided into zones, and a single car belonging to the zone operates the zone, and the shaft is divided into zones, and a plurality of cars belonging to the zone are grouped into the zone. The shaft is operated as a set of a plurality of cars belonging to the shaft and a pattern of operating the shaft Multi-car system elevator characterized by comprising a pattern. In a multi-car type elevator having a plurality of shafts as one bank and a plurality of cars traveling independently in each shaft, a traffic demand determining means for determining uneven distribution of traffic demand in the bank, When the uneven distribution becomes large, call classification means for classifying unanswered calls common to the bank into predetermined categories, and shaft assignment means for assigning classified unanswered calls to any shaft by category Operation pattern specifying means for specifying an appropriate operation pattern for each shaft according to the category of the call , wherein the operation pattern divides the shaft into zones, and a single car belonging to the zone operates the zone. The pattern and the shaft are divided into zones, and a plurality of cars belonging to the zone are grouped into the zone. Multi-car system elevator, characterized the pattern that runs from a pattern that runs the shaft a plurality of cars belonging to the shaft as one set, further comprising: a. The traffic demand determining unit, multi-car system elevator that 請 Motomeko 2 wherein you said that the determination reference number of distribution of calls unanswered in the bank.

Images