JPH0317753B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a group management control method for elevators.
In particular, it relates to automatic setting and automatic reset of peak demand operations such as when commuting to work and during lunch.

[Technical background of the invention]

In recent years, when multiple elevators are installed in parallel,
In order to improve elevator operation efficiency and improve services for elevator users, we will use small computers such as microcomputers to rationally and quickly allocate answering machines for hall calls (calls from the hall) on each floor. Group management control is in place. In other words, when a hall call occurs, the system selects the most suitable elevator to handle the hall call, quickly assigns the elevator to respond to the hall call, and
Other elevators are prevented from responding to the hall call.

In this type of group management control, conventionally, the switching of the operation mode during peak demand times, for example, demand at work, was turned on by referring to both the time condition and load condition by a clock, and only the time condition was turned on. I was trying to turn off the demand when I went to work. Also, demand during lunch time on and off was almost the same as during work.

However, when a building, for example, is in actual operation, the tenant occupancy situation is often significantly different from that at the time of building planning, and the time specified in advance by the customer is the optimal setting for switching to peak operation. There are many cases where this is not the case. For example, if the end time set for departure time is too late, the demand for departure time is still continuing even when almost no passengers have boarded from the standard floor, so the departure interval control keeps cars at a constant rate on the standard floor. The actual demand of the building may be affected, such as the time being stopped and passengers in the car being irritated, or the unanswered time for the ascent hall calls on intermediate floors (normally, ascent calls are often assigned to the first aircraft). This creates the problem of misaligned control,
In order to solve this problem, maintenance personnel had to set the clock again, which was an inconvenience.

[Purpose of the invention]

An object of the present invention is to provide elevator group management that enables start and end control of peak demand operations, such as attendance demand operations and lunchtime demand operations, to be performed more appropriately and in accordance with actual demand. The objective is to provide a control method.

[Summary of the invention]

The present invention applies to peak demand operation (at work, lunch time, etc.)
The start of demand is detected within the set time of the external clock, and the end of demand is set based on the condition that the demand change time has reached the average time for a certain period of the past (by day of the week or for a certain number of consecutive days). The ratio of the elapsed time from the set start time to the actual time and the total time set on the external clock, the total number of people transported from the relevant floor within the same demand (mainly suitable for when going to work), and the 5-minute transport from the relevant floor. It is characterized in that it is detected based on at least one of the ratio of the number of people and the average value of the peak value for 5 minutes for the corresponding demand within a past fixed period.

[Embodiments of the invention]

FIG. 1 shows the configuration of a system to which an embodiment of the present invention is applied.

In Fig. 1, 1 is a hall call registration circuit, and when registering a hall call, the corresponding floor and direction registers are set, and are reset when the car arrives at the floor where the hall call was received. It is something. 2A to 2H are elevator operation control devices provided for each of the eight elevators A to H, and the car status buffers 3A to 3 are
Car call registration circuits 4A to 4H, quasi-car call registration circuits 5A to 5H, and signal synthesis circuits 6A to 6H are provided separately. Cart status buffer 3A~3
H is a buffer for inputting the car state to a wiper select circuit 7, which will be described later. The car call registration circuits 4A to 4H are set at the time of car call registration and reset when the car arrives at the call registration floor. Semi-car call registration circuit 5A
-5H stores the hall call assigned to the car and is reset when the car arrives at the hall call floor. Signal synthesis circuit 6A
-6H outputs the logical sum of the outputs of the car call registration circuits 4A-4H and the outputs of the quasi-car call registration circuits 5A-5H.

7 is a wiper select circuit. A decoding circuit 8 decodes an output signal from an output register 12, which will be described later, and sets secondary car call registration circuits 5A to 5H of the corresponding car in the corresponding floor direction. 9 is a small computer using, for example, a 12-bit microcomputer, and has output registers 10 and 12 and input registers 11 and 1.
3.15. Output register 10, 12
has the function of holding the same output until the next output.

Note that the registers and interface devices having the same function, one for each elevator, are connected by a plurality of parallel signal lines, for example, 12 in this case. Furthermore, all the registers have a number of bits corresponding to one word of the small computer 9.

14A to 14H are load detectors provided for each car, and detected load information is read into the small computer 9 via the input register 13. Also,
Reference numeral 16 is a clock device that may be any device that updates the day of the week, hour, minute, and second in units of one second (it is usually commercially available, so I will not discuss it in detail), and this time information is input through the input register 15. The data is then read into the small computer 9.

Next, one embodiment of the present invention will be described with reference to flowcharts shown in FIGS. 5 to 15.

That is, in FIG. 5, after the program starts, the RAM in the microcomputer is initialized, and then the car index J=0, that is, the car status table CCT(J) from machine A, is transferred through the connector RSP (program repeat, start point). and the load (table formats shown in FIGS. 3 and 4, respectively) are read, and the same process is repeated for all machines one after another.

Next, the process proceeds to the on (start)-off (end) detection routine of demand driving at the time of work via the connector AO.

Here, the flowcharts shown in FIGS. 7 to 9 show the on-off detection routine of the on-demand driving at work in more detail.

That is, in FIG. 7, the clock device 16 installed in the group management control device is set within a predetermined first set time T ₀ to T ₁ (usually, for example, T ₀ =8
00:00, T ₁ = 9:15).
If it is outside the first set time, the variable LOCK (described in detail later) is set to 0, the work demand is turned off, and the process goes to connector A. If it is within the first set time, it is within the work time zone. Even if , the variable LOCK indicates whether the demand at the time of actual work has already been completed (LOCK = 1 when the demand at the time of actual work is completed)
is checked, and if LOCK is 1 (that is, when the actual attendance demand is completed), the process advances to connector A and moves to the next process.

Also, when LOCK=0 here, the clock device 16
Whether the time given by has reached the time PEAK$AV that corresponds to the average value of the switching time at the time of work (hereinafter referred to as "work time by learning") within a certain period in the past (by day of the week or for a continuous certain period) If the time reaches PEAK$AV (the two times become equal), the time PEAK$T at which the operation was switched to demand at the time of work is memorized, and after switching to demand at the time of work, Proceed to connector A.

Next, if the time given from the clock device 16 is within the first set time T ₀ to _{T 1} at the time of work and is not the learned work time PEAK$AV, the process moves to FIG. 8 from the connector A1 and the current demand operation is performed. If it is not demand operation at the time of work, the process proceeds to connector A3. (in this case,
Although it is within the scheduled switching time T ₀ to T ₁ at the time of work,
This applies to cases where the attendance time PEAK$AV has not been learned. ) After passing through connector A3, it is checked whether there is one or more elevators that have departed from the standard floor with a load of 45% or more, and if there is none, the current demand operation is maintained and the elevator moves to connector A.

In addition, if even one elevator departs from the standard floor at 45% or more, we will further check whether it will switch to work demand for the first time, and if it will switch for the first time, we will switch to work demand at the same time. After memorizing the switching time and PEAK$T, proceed to connector A.

Here, in the processing below _the connector A3 _in FIG. This is a back-up to switch to demand at the time of work in the event that the number of passengers from the standard floor increases at a time when PEAK$AV is not reached.

Furthermore, if the current demand operation has become the on-demand demand operation at the time of passing through the connector A1, the process proceeds to the connector A2, and detects whether the on-demand demand operation is automatically turned off. That is, in FIG. 9, the time T given from the clock device 16 is the first time for the first set time starting time T ₀ and ending time T ₁ of the first set time.
Check whether the relationship in equation (1) is satisfied.

(T-T ₀ )≧(T ₁ -T ₀ )×L ₁ ...(1) Here, T: Current time given from the clock device 16 (actual time), T ₁ : Work end time set, T ₀ : Set start time for work, L ₁ : Predetermined constant coefficient value,
In this example, it is 0.75 (75%).

If the current time does not satisfy equation (1), proceed to connector A, and if it does, the next condition is to calculate the total number of people transported from the reference floor from the set start time T ₀ to the current time. This value is multiplied by a predetermined factor of the total number of people transported from the standard floor TENA (i.e., approximately the same as the number of tenants in the relevant building) at the time of work in the building during a certain past period (by day of the week or a continuous period). (In this example, it is set as 75% as an example). If it is less than a certain factor, proceed to connector A. If it is more than a certain factor, then proceed to connector A. The number of people transported from the standard floor (hereinafter referred to as "the number of people transported in 5 minutes") is the maximum value of the number of people transported in 5 minutes within a certain period in the past (by day of the week or a continuous period) (even by day of the week, the number of people transported in 5 minutes) (Data for several days is fine) PEAK
Check whether it is less than a predetermined constant factor times $M5 (in this embodiment, 25% is explained as an example as a limit), and if it is more than a certain factor times, connecter A
Proceed to , and if it is less than a certain factor times the current time, even if the current time is within the set time for work, T ₀ to T ₁ , the demand for the day can be considered to have already been completed, so turn off the demand for work. (In other words, switch to normal demand)
At the same time, the variable LOCK, which indicates whether or not the actual work demand driving has been completed, is set to 1, and the process proceeds to connector A.

In FIG. 5, after passing through connector A, on-off of the lunchtime demand operation is detected.

Here, the flowcharts shown in FIGS. 10 to 12 show the on-off control of the lunchtime demand operation in detail.

The processing shown in the flowcharts of FIGS. 10 to 12 is almost the same as that explained in the on-off detection routine for demand at the time of work shown in FIGS. 7 to 9. The difference lies in the extent to which the arrival aircraft can be checked), so I will briefly explain it.

That is, in FIG. 10, even if the time given by the clock device 16 is outside the set time zone for lunch or within the set time zone, if DR$LOCK (approximately the same as LOCK at the time of going to work described above) is other than 0. Proceed to connector B.

In addition, even in situations other than the above, the clock device 1
If the time given from 6 is not the learned lunch time DRSP$AV (corresponding to the learning switching time at the time of work described above), proceed to connector B1 and set the learned lunch time DRSP$AV.
If it's Natsuta, change time during lunch DRSP
Memorize $T, switch to lunchtime demand, and connect connector B.
Proceed to.

In Fig. 11, after going through connector B1, it is checked whether the current demand operation is lunch demand operation or not, and if it is lunch demand operation, it goes to connector B2, and if it is not lunch demand operation, it goes to connector B3. . And load 45%
The above completes the dining room floor (the floor data of the dining room floor is set to P- in advance).
It is preset in the ROM (Programmable Read Only Memory), which distinguishes the cafeteria floor), and if there is no car, the process goes to Connector B, and if there is, it is further set to meet the demand during lunch for the first time. If it changes for the first time, switch to lunchtime demand operation and at the same time switch to lunchtime demand operation. (This is a backup of detection based on demand learning.) When proceeding to connector B2, as shown in the flowchart of Fig. 12, the lunch time start time is set.
Depending on whether the elapsed time from T ₂ satisfies equation (2), if it does not, proceed to connector B.

(T - T ₂ ) ≧ (T ₃ - _{T 2} ) × 0.75 ... (2) where, T: current time given from the clock device 16, T ₂ : lunch time start set time, T ₃ : lunch time end It is the set time.

If the current time T satisfies formula (2), check the number of people boarding every 5 minutes on the dining room floor, and calculate the number of boarding passengers for 5 minutes in the past fixed period (by day of the week or for a continuous fixed period). If it is less than a certain coefficient times the peak value DRSP$M5, lunch demand operation is turned off and DR$LOCK is performed.
Let be 1. (This DR$LOCK is the LOCK when you go to work.
It has the same meaning, so I won't go into details. ) After on-off control of the peak demand operation at work time and lunch time as described above, the process proceeds to connector B in Fig. 6 and hall call allocation processing is performed according to the selected demand situation. Various proposals have already been made for hall call allocation processing based on demand, and this point is not particularly important to the present invention, so a detailed explanation of this point will be omitted.

Next, the time given from the clock device 16 is 0:00 AM.
It is checked whether the time has become old or not, and if it is not, the process goes to the repeat start point RSP, and if it is, the process is as shown in the flowchart in FIG.

In Figure 13, in connector C, the switching time PEAK$T of the current day's attendance demand is included in the average time PEAK$AV of the past attendance switching times, as shown in equation (3), and the next day Used for subsequent control. In this case, PEAK$AV is learning data and is the average time of past driving start times at work. Then, this PEAK$AV is determined by the formula below, but PEAK$T here is the time when PEAK$AV becomes PEAK$AV as described above, and the time when PEAK$T becomes PEAK$AV as described above.
There are two cases when an elevator with a predetermined load or more departs at a time before $AV, so the PEAK$AV used next time is the PEAK at this time.
It will change depending on $T.

PEAK$AV=αPEAK$AV+(1-α)
PEAK$T...(3) Here, α: is the ratio between the past average and the current day's data.

Similarly, the average time DRSP$AV of the lunch time demand switching time is calculated and updated as shown in equation (4). DRSP$AV in this case is also the same as described above.

DRSP$AV=αDRSP$AV+(1-α)DRSP
$T...(4) Next, move on to Figure 14, which shows the average number of tenants in a building.
TENA is calculated and updated using formula (5) based on TENA$T, the number of people transported from the standard floor during the working hours of the day.

TENA=αTENA+(1-α)TENA$T
...(5) Next, the transport load in 5-minute units during work and lunch times is calculated using equations (6) and (7).

PEAK$M5$T(T)=PEAK$M5$T(T)+
PEAK$M5$C(T) ……(6) DRSP$M5$T(T)=DRSP$M5$T(T)+
DRSP$M5$C(T) ...(7) Here, PEAK$M5$C(T), DRSP$M5
$C(T) is the transport load for 5 minutes on the day, PEAK
$M5$T(T), DRSP$M5$T(T) is
PEAK$M5$C(T) and DRSP$M5$C(T) are accumulated for 10 minutes at work and during lunch.
Total number of loads transported for 15 minutes (for a certain period in the past)
It represents.

Also, PEAK$M5$T (T), DRSP$M5$T
After updating the calculation including the maximum values MAX$PEAK and MAX$DRSP of (T), and carrying out the above process for all hours of work and lunch, the average number of people transported for 5 minutes PEAK$M5, DRSP of the above maximum value. Calculate $M5 and return to repeat start point RSP. Here, in Figure 15, the cumulative number is 10 as an example.
In other words, when T=10, PEAK$SM5
=MAX$PEAK/10, DRSP$M5=MAX
The average number of people transported in 5 minutes is calculated from $DRSP/10.

In this way, the start switching conditions for peak demand operation (such as peaks at work and lunch times) can be set within the set time and on the average of the times when demand switched over a certain period of the past (by day of the week or for a certain number of consecutive days). Detects whether the time has arrived (both when going to work and during lunch),
The end switching conditions are determined by determining the ratio of the elapsed time from the set start time of each demand operation to the actual time and the set time width (difference between the end time and start time) of that operation, and the center floor of the demand operation (at the time of departure). If so, the standard floor,
This is determined based on the load of the car departing from or arriving at the dining floor (if it is lunch time) and the number of people transported on that floor for 5 minutes, so it is possible to automatically detect traffic demand that matches the actual demand of the building. It is possible to perform control that is flexible and has good followability.

In the embodiment of the present invention, switching to peak demand operation is performed at the earliest of the time when demand actually increases or the average value of past switching times. If such switching times are sequentially averaged, the average value changes toward earlier times. This prevents the learning data from sequentially changing the switching time toward later times. This also applies when the value of the data itself becomes abnormal due to some abnormality in the learning data.
We are trying to achieve a failsafe by running peak demand operations for as long as possible.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without changing the gist thereof.

〔Effect of the invention〕

According to the present invention, there is provided a group management control method for elevators that can more appropriately control the start and end of peak demand operations such as attendance demand operation and lunchtime demand operation in accordance with actual demand. can be provided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a system to which an embodiment of the present invention is applied, FIGS. 2 to 4 are format diagrams of various tables used in the embodiment, and FIGS. 5 to 15 are It is a flowchart showing the same example in detail. DESCRIPTION OF SYMBOLS 1...Hall call registration circuit, 2A-2H...Elevator operation control device, 7...Wiper selection circuit, 8...Decoding circuit, 9...Small computer, 14A-14H...Load detector. , 16...
Clock device.

Claims (1)

[Claims] 1 Put into service multiple elevators installed in parallel,
In elevator group management control that centrally controls multiple elevators, when controlling the start and end of a predetermined peak demand operation, the average value of the switching time to the peak demand operation in the past predetermined period is calculated and the actual value is calculated. Switching to the peak demand operation on the condition that the ratio of the transport load for a predetermined unit time of the current day and the transport load for the above-mentioned unit time during a predetermined period in the past becomes equal to or higher than a predetermined value while the time has passed the average time. , in a state where the ratio of the elapsed time from the preset start time of the peak demand operation to the actual time and the preset time width of the peak demand operation exceeds a predetermined value, at least a predetermined unit time on that day. A method for group management and control of elevators, characterized in that the ratio of the transport load of the transport load to the transport load of the unit time of the past predetermined period becomes less than or equal to a predetermined value, the control state is switched to a control state other than the peak demand operation. .