JPS62830B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator control device, and more particularly to an improvement in a group management control device for servicing a large number of floors with a plurality of elevators.

In an elevator group management control device, in order to optimize the waiting time for hall calls as a whole, elevators that service hall calls are selected according to a predetermined logic in response to generated hall calls. Hall call service is assigned to that elevator.

For this reason, a hall call is not necessarily assigned to a nearby elevator and serviced, and even though there is a stopped elevator on the floor where the hall call occurred, other elevators running on other floors A phenomenon may occur in which an elevator is assigned service for that hall call.

However, although this may be good from the perspective of the overall hall call service, it may cause distrust among the customers waiting in the hall, which is not at all a desirable thing.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator control device that eliminates the above-mentioned drawbacks of the prior art and that does not cause a sense of distrust among customers waiting in an elevator hall without degrading performance.

The features of the present invention are that no elevator is assigned to the hall call that has occurred, and (1) the elevator is decelerating toward the floor where the hall call occurs, and (2) the door is stopped at the floor where the hall call is generated. (3) Hall calls occurring on that floor are routed to other elevators according to preset priorities according to each elevator status. The point is that it has a means for allocating it preferentially.

The present invention will be explained in detail below using the embodiments shown in FIGS. 1 to 9.

The logic for assigning a generated hall call to an elevator for service is as follows: 1. A method in which a newly generated hall call is assigned to the elevator with the minimum calculated waiting time for the hall call that has already been assigned.

2. By assigning the hall call that occurred,
A method in which a hall call is assigned to the elevator with the greatest change in the calculated waiting time for all hall calls.

There are many theories such as, but the following explanation is based on the above (1)
Do this for methods. There will be three elevators, numbers A to C, and service floors will be from floors 1 to 10.

FIG. 1 is a circuit diagram of car A which calculates the contradictory waiting time for each floor. In the figure, VAD is the power supply, UPA _a and DNA _a are relay contacts that close during rising and falling times, respectively, and 1CA _a to 10CA _a are each 1
Relay contacts that close while car calls from floors to floors 10 are registered, HC1U _a ~ HC9U _a , HC2D _a ~
HC10D _a is a relay contact that closes while the 1st floor up to 9th floor up, 2nd floor down to 10th floor down hall call is registered, respectively, RY1UA _a ~ RY9UA _a , RY
2DA _a ~RY10DA _a is the rise of each floor, respectively.
Relay contact (6th
Relays RY1UA~RY9UA, RY2DA~RY in the diagram
(It is connected to the 10DA contact point). F1UA _b ~F9
UA _b , F2DA _b to F10DA _b are floor detection relay contacts, which open when car No. A is located on that floor and direction. AD1UA2,3～AD9UA2,
3:AD10DA2,3~AD2DA2,3:ADD
1UA~ADD9UA, ADD10DA~ADD2DA are adders, CLW1UA~CLW9UA,
CLW10DA to CLW2DA are counters each counting the duration of a hall call.

In the above configuration, for example, now machine A is 1
If you are in the direction of rising floors, relay contact F1UA _b
is open. Therefore, VAD−AD1UA3−
A signal is transmitted as F2UA _b -AD2UA3-..., but the adder AD1UA3 outputs a signal corresponding to the positional relationship of the elevator to the first floor. This signal is transmitted to the adder ADD2UA and the adder
Input to AD2UA3. The adder AD2UA3 outputs a signal corresponding to the second floor. In this way, the floor spacing is calculated from the floor where the elevator is located, and input to the adder. On the other hand, if there is a caller 8CA _a on the 8th floor in the car and he is in charge of the hall call on the 2nd floor, then VAD−RY2UA _a −AD2UA
The signal is transmitted as 2-...F8UA _b -AD8UA2...... At this time, adders AD2UA2 to AD7
UA2 outputs a value indicating that the number of car stops is 1, but the output of adder AD8UA2 is VAD-
Due to UPA _a −8CA _a , there is a new input, so
Outputs a value indicating that the number of stops is two. These signals are input to adders ADD2UA to ADD9UA. In other words, for the 3rd to 7th floors where there are no hall calls or car calls, the elevator only stops once and serves, indicating that the distance between the elevator and the elevator is 2 to 6 floors. At this time, the adder is set as ADD2UA, and the operational resistances r ₂ , r ₃ , r ₄
If set properly, it will output the time the elevator will service those floors. For example, for a call, weight the acceleration and deceleration time from the elevator's rated speed, door opening/closing time, passenger entry and exit time, etc. to about 10 seconds, and for the first floor, weight it to about 2 seconds. good. In this way, the predicted waiting time for the 3rd to 7th floors can be calculated. For the second floor where there is a hall call, in addition to the predicted waiting time as described above, the duration of the hall call is counted by the counter CLW2UA and added by the adder ADD2.
Enter into UA to add estimated wait time.

FIG. 2 is a circuit that receives the predicted waiting time calculated in FIG. 1 as an input and detects the maximum predicted waiting time of a newly generated hall call and a hall call that has already been allocated further away. In the figure, R1U _a ~ R10D _a , R1U _b ~ R10D _b
are relays R1U to R10 that close and open, respectively, when a hall call from the 1st floor up to the 10th floor down occurs and has not yet been assigned to any elevator.
Relay contacts of D (see Figure 9), F1UA _a ~ F1
0DA _a is a relay contact that closes when Unit A is located in the direction from the 1st floor up to the 10th floor down, d1UA ~
d10DA is a diode, _r5 is a resistor- _V3 is a power supply. The predicted waiting time according to FIG. 1 then selects only newly generated hall calls and already assigned hall calls and connects them to the anode of the diode. For example, when the elevator is in the ascending direction of the first floor (relay contact F1UA _a is closed, F1
UA _b is open), and the hall calls for ascending the 2nd floor, ascending the 9th floor, and descending the 10th floor are already being handled (relay contacts RY2UA _a , RY9UA _a , and RY10DA _a are closed), and a new hall call for the ascending 8th floor is being handled. (Relay contact HC8U _a in FIG. 1 is closed, but assignment to the elevator has not yet been completed, so R8U _a is closed and R8U _b is open.) In this case, AN8UA-R8U _a -d8UA-F9UA _b -R
9U _b -F10DA _b -......-R2D _b -F1UA _a
−r ₅ −(−V ₃ )AN9DA−RY9UA _a −d9UA−
F10DA _b −R10D _b −………−R2D _b −F1
UA _a −r ₅ − (−V ₃ ), AN10DA−RY10DA _a −
d10DA−F9DAb−R9D _b −………−R2D
_b -F1UA _a r ₅ -(-V ₃ ) is formed. At this time, diodes d8UA, d9UA, d10DA, resistance
_r5 constitutes a maximum value selection circuit. In other words,
Since the low resistor r ₅ is connected to the negative power supply -V ₃ , the diodes are connected to the signals AN8UA, AN9UA, AN10DA
Only the diode with the higher input voltage becomes conductive, and a voltage equal to the maximum input voltage minus the forward voltage of the diode is generated on the cathode side of the diode. This voltage applies the voltage to the other diodes in the opposite direction, rendering them non-conductive. Now signal AN8
For example, the voltage of UA, AN9UA, AN10DA is
Assuming 4V, 7V, and 5V, the predicted waiting time signal AN9UA for the 9th floor ascending hall call, which is the maximum 7V, appears at the anode side of the diode, that is, at the terminal of resistor _r5 . This signal is a relay contact that closes when Unit A is full or cannot be serviced due to a breakdown, etc.
The signal ANA becomes the signal ANA through SEVA _b , and becomes the input of Fig. 4 described below. Furthermore, since the relay contacts F1UA _b and RTU _b are open for the signal AN2UA, it is clear that the maximum value selection circuit described above is irrelevant.

FIG. 5 is a circuit that selects the minimum value among the signals of cars A to C from FIG. 2 transmitted through FIG. 4 and outputs it to the elevator car. In the figure, d _a to d _c are diodes, r _b is a resistance, and CMA to
CMC outputs "1" when the sum of two inputs becomes larger than diode forward voltage V _d , and relay RYA
~Comparator driving RYC, SN is code converter, NA
~NC is a knot element, and only the diode of the minimum input signal among the signals WA~WC is conductive.
As a result, the anode sides of the commonly connected diodes have a potential higher than the minimum input value by the forward voltage V _b of the diodes, and are input to the sign converter SN. The output of this code converter SN is the comparator CMA~
Applied to CMC. Other inputs of the comparator are WA~
It is WC. Therefore, the sum of the two inputs of the comparator becomes larger than the forward voltage drop of the diode. That is, if WA~WC are respectively 1V, 2V, and 3V, the input signal of SN is (1+V _d ), and its output is -
(1+V _d ), and the respective inputs of the comparators CMA to CMC become -V _d , (1-V _d ), and (2-V _d ). If the operating point of the comparator is set so that when -V _d , the output is "0" and above it, the output is "1", then only the comparator corresponding to the input showing the minimum value will output " 0”. Comparator CMA~
Since the output of CMC drives relays RYA to RYC through knot elements NA to NC, only the relay corresponding to the minimum input is turned on. This relay operates on the circuit shown in FIG. 6 below.

FIG. 6 shows a circuit for designating a service elevator for a hall call and allocating the call. relay
RYA (see Figure 5) and relay T (see Figure 8)
is on, the call relay RY9UA~
One of RY1UA, RY10DA to RY2DA is turned on and self-maintained.

Figure 7 shows the relay circuit. When one of machines A to C takes charge of a hall call, relays H1U to H9
One of U, H2D to H10D is turned on.

Figure 8 shows a timing circuit, in which a time relay T
The output relay contact T _a is closed, and the timing is set so that the hall call allocation is appropriate by working with FIG.

FIG. 9 shows a relay circuit that is turned on when a hall call occurs and the assignment to an elevator has not yet been determined.

In addition, in Fig. 6, RYA _a is the relay contact that closes when the relay RYA in Fig. 5 is turned on, and dA
1U ~ dA10D is a diode, H1U _a ~ H10D _a , H1U _b ~ H10 in Figures 8 and 9
D _b is a relay contact that closes and opens, respectively, when relays H1U to H10D in FIG. 7 are turned on. T _a in FIG. 6 is closed after a predetermined period of time after the drive circuit of the time relay T in FIG. 8 is configured;
It is a relay contact that opens immediately when the drive circuit is disconnected.

Now, an overall explanation will be given regarding the above configuration. Now, let's consider a case where a hall call for climbing occurs on the 8th floor and relay contact HC8U _a is closed. When a call occurs, P-HC8U _a -H8U in Figure 8
The circuit _b -T-N constitutes a drive circuit for the time relay T, and the contact T _a of the time relay T shown in FIG. 6 closes after a predetermined time period of, for example, 100 ms. Meanwhile, in Fig. 9, P-HC8U _a -T8U _b -
Relay R8U is turned on by the R8U-N circuit,
Relay contact R8U _a in Fig. 2 is closed, and Fig. 1,
The relay shown in Figure 5 is connected by the circuits shown in Figures 2 and 5.
When RYA is on, relay RY1 in Figure 6
A closing circuit of UA to RY10DA is formed. At this time, HC8U _a −RY8UA−dA8U−RYA _a −T _a
-P circuit turns on RY8UA. In other words, the hall call for the 8th floor is assigned to car A. As a result, relay RY8UA becomes N-RY8
It is self-maintained by the circuit UA _a -HC8U _a -RY8UA-RY8UA _a -P. Also, relay RY8UA
acts on Figure 7, and P-RY8UA _a -H8U-
N circuit turns on relay H8U, opens relay contacts H8U _b shown in FIGS. 8 and 9, and turns off time relay T and relay R8U.

As mentioned above, the circuit shown in FIG. 8 is a timing circuit for taking the time necessary to calculate the predicted waiting time of a hall call that is farther away than a newly generated call, and the idea of the present invention is realized without timing problems. If possible, this circuit is unnecessary.

Next, a case will be described in which a hall call occurs on a floor with a stopped elevator and is registered.

FIG. 3 is a circuit diagram showing an embodiment for detecting a state in which a hall call has occurred on a floor where a stopped elevator is located and has not yet been assigned. In Figure 3, R1U _a to R10D _a have received hall calls from the 1st floor up to the 10th floor down, but still.
The contacts of relays R1U to R10D in Fig. 9 are closed when the elevator is not assigned, and F1UA _a to F10D _a are the relay contacts that are closed when elevator A is in the 1st floor up to 10th floor down position. , SA _a is a relay contact that closes when Unit A is stopped (including during deceleration), and X is a relay contact that closes when Unit A is stopped (including during deceleration). , and is a relay that turns on only when it is not assigned to either.

Figure 4 is a circuit diagram showing an example of an embodiment of the A machine for switching the evaluation value for hall call assignment (switching the assignment method) when a hall call occurs on a floor with a stopped elevator. be. In Figure 4, ANA is the signal of machine A from Figure 2, X _b is a contact that opens when relay X in Figure 3 is turned on, and X _a is a contact that closes when relay X above is turned on. , DAA _a is a contact that closes when Unit A is decelerating (excluding when the door is open or closed), DOA _a is a contact that closes when Unit A is stopped with the door open, and DCA _a is a contact that closes when Unit A is stopped with the door open. The contacts that close when the elevator is stopped, V0 ₁ to V0 ₃ , are set values that determine the priority order of hall call assignment according to the elevator status. For example, they can be set to 2V, 1V, and 3V, respectively. Just leave it there.

Now, when a hall call occurs on any floor, unless the elevator is stopped at that floor, relay X in FIG. 3 will not turn on. For this reason,
Since the contact X _a in FIG. 4 is open and the contact X _b is closed, the signal ANA is transmitted and becomes the signal WA, and the hall call assignment is performed as described above.

However, for example, if the door of Unit A has stopped opening in the ascending direction of the first floor, the contacts F1UA _a , SA _a , DOA _a
is closed. At this time, when the first floor ascending hall call occurs, contact HC1U _a closes in Figure 9, and contact H1U _a remains closed (in Figure 7, contacts RY1UA _a to RY1UC _a are all open). ), relay R1U turns on. Therefore, contact R1U _a in FIG. 3 is closed, and P-R1
Relay X is turned on by the circuit U _a -F1UA _a -SA _a -X-N. Therefore, the signal ANA from FIG. 2 is no longer transmitted due to the opening of the contact X _b , and instead the set value _V02 is transmitted to the contacts DOA _a , X _a
and becomes the signal WA. However, B to C
The machine numbers are contacts not shown: DAB _a ~ DCB _a , DAC _a ~
Since DCC _a (corresponding to contacts DAA _a to DCA _a of unit A) is open, signals WB and WC (signal of unit A) are open.
Corresponds to WA, not shown. ) nothing is transmitted (at this time, signals WB and WC become 0V).
These are transmitted to FIG. 5 as described above, and the allocation to machine A is determined. That is, regardless of the status of cars B to C on other floors, the hall call for the first floor will be assigned preferentially to car A, which has stopped ascending to the first floor and the hall call has occurred.

Next, assuming that Unit B is also decelerating to stop at the first floor rise, the contact point of Unit A of Unit B in Figure 4
The contact DAB _a corresponding to DAA _a is closed, and the set value _V01 is transmitted as the signal WB. However, in Fig. 5, the minimum value is selected, and the smaller WA of WA = 1V and WB = 2V, that is, car No. A whose door is stopped open, is selected, and the hall call assignment is performed in the same way as above. be exposed.

Here, the reason why elevators are selected and allocated preferentially by setting priorities in each state of deceleration, door opening and stopping, and door closing and stopping is based on the following reason. For example, if you compare an elevator that is decelerating with its doors open and stopped, an elevator that is decelerating will take up to 7 seconds to respond to a call, whereas an elevator that is decelerating and stopped with its doors open will naturally respond more quickly to a call. Therefore, it is convenient to give a high priority while the door is not opening. Furthermore, if we compare an elevator that is decelerating and one that is stopped with its doors closed, an elevator that is stopped with its doors closed (i.e., on standby) has to turn on the car lights and open the doors, which takes time to start. Since it takes a lot of time, it is more convenient to give priority to the one that is decelerating. That is,
Even if you say "stopped", the waiting time will vary depending on the status of the elevator, so if you set evaluation values according to each status and assign priority, you can shorten the waiting time for customers waiting in the hall. It is clear that

Note that this priority order is not limited to this example,
Taking into account other factors (call assignment to other floors, etc.),
You can set it in a different order.

In the above description, the analog circuit was mainly explained, but it can also be easily realized by software processing using computer application, etc., and the same effect can be obtained.

As explained above, according to the present invention, when the elevator is stopped on the floor where a hall call has occurred,
Since the elevator is selected and given a hall call on a priority basis depending on the elevator's status (decelerating, door stopped, door closed, etc.), the waiting time for customers waiting in the hall can be shortened. Not only is this possible, but it also has the effect of contributing to improving overall efficiency, such as preventing unnecessary opening and closing of doors.

[Brief explanation of the drawing]

1 to 9 are circuit diagrams showing one embodiment of the control device of the present invention. FIG. 1 is a circuit diagram of a car A that calculates the predicted waiting time for each floor, and FIG. 2 is a circuit diagram according to FIG. A circuit diagram for detecting the maximum predicted waiting time calculated; FIG. 3 is a circuit diagram for detecting a state in which a hall call has occurred and has not yet been assigned;
Figure 4 is a circuit diagram of machine A that switches the evaluation value of hall call assignment when a hall call occurs on a floor with a stopped elevator, and Figure 5 shows A~
Figure 4 of No. C is a circuit diagram for selecting the minimum value of the signal transmitted through Figure 6, Figure 6 is a circuit diagram for assigning a hall call to a designated service elevator, Figure 7 is a relay circuit diagram, and Figure 8 is a timing circuit. FIG. 9 is a relay circuit diagram of a relay that is turned on when a hall call occurs and the assignment to an elevator has not yet been determined. R1U _a ~ R10D _a ... Relays R1U ~ R1 that close when a 1st floor ascending to 10th floor descending hall call occurs and has not yet been assigned to an elevator.
0D contacts, F1UA _a ~ F10DA _a ... Relay contacts that close when Unit A is going up the 1st floor to descending the 10th floor, SA _a ... Contacts that close when Unit A is stopped, X... Relay, X _a , X _b ...Relay X
Normally open contacts, normally closed contacts, DAA _a , DOA _a , DCA _a …
...Contacts that close when Unit A is decelerating, when the door stops opening, and when the door stops closing, respectively, V0 ₁ to V0
₃ ...Setting value, ANA...Estimated waiting time signal of Unit A from Figure 2, T-time relay, RY9UA~
RY1UA, RY10DA~RY2DA...9th floor rise~
1st floor up, 10th floor down - 2nd floor down call relay, H1
U~H9U, H2D~H10D...1st floor up~9
Floor ascending, 2nd floor descending to 10th floor descending relay.

Claims (1)

[Claims] 1 In a system where multiple elevators running on multiple floors are installed in parallel and elevators are assigned by calculating the predicted waiting time for a hall call that occurs, it is not possible for any elevator to be assigned to a hall call that occurs. If the elevator is not in use and the elevator is decelerating toward the floor where a hall call occurs, or the door is stopped at the floor where the hall call is generated, or the door is stopped when the door is closed, the elevator is set in advance according to the condition of the elevator. 1. An elevator control device comprising means for allocating a hall call occurring on the floor to the elevator with priority over other elevators in accordance with the priority order of allocation.