JPS5912591B2 - Elevator group management control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator control system, and more particularly to an elevator group management control system.

In elevator group management control, when customers waiting in the hall call for an elevator and board the car to go to their destination floor, the time it takes for the waiting customers to board the elevator is considered important as the waiting time, and the elevator service is evaluated. This is one indicator that

It is clear that in order to shorten this waiting time, it is better to have all elevators in continuous operation.

However, operating an elevator, especially starting and stopping it, consumes a large amount of power, so it is not desirable from the point of view of power consumption to start and stop more than necessary or to operate more elevators than necessary.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator group management control device that can reduce sacrifices in waiting time for hall customers and reduce power consumption.

A feature of the present invention is that in selecting and allocating a service elevator to a hall call using a service evaluation value including waiting time for a hall call, at least detecting that an elevator does not have an assigned hall call,
By varying the service evaluation value of the elevator in the direction equivalent to the increase in waiting time, an elevator with an appropriate waiting time for hall calls can be selected, that is, while reducing the sacrifice of waiting time, The purpose of this technology is to reduce power consumption by increasing the number of times an elevator that does not have an elevator is stopped.

The present invention will be explained below with reference to the drawings.

FIGS. 1-7 illustrate how the present invention can be used, for each elevator, to estimate the maximum estimated time required to service a hall call among newly generated hall calls and previously assigned hall calls to be serviced. This is an example of an elevator group management method in which the smallest elevator is assigned to service the generated hall call.

FIG. 1 is a circuit diagram of car No. A which calculates the predicted time for each floor.

In the figure, VAD is a power supply, UPAa, and DNAa are relay contacts that open during rising and falling times (hereinafter, a in the contact number indicates a normally open contact, and b indicates a normally closed contact), 1CAa to 10CAa. are relay contacts that open and close circuits where car calls from the 1st to 10th floors are registered = HCI
Ua to HC9Ua and HC2Da to HCloDa are relay contacts that open and close, and RYlUA are registered with the 1st floor up/out to 9th floor up, 2nd floor down sieve to 10th floor down hall calls, respectively.
a-RY9UAa, RY2DAa to RY10DAa are relay contacts that close when an ascending or descending hall call for each floor occurs and the N car is assigned to service, FlUAt)-F9UAb, F2DNb to F10D
Ab is a floor detection relay contact that opens when Unit A is located on that floor and direction, AD1UA & 3 ~ AD 9 UA2,3: AD 1
0DA2 f-ADZDA2s'ADDIUA~AD
D9UA; ADD10DA to ADD2DA are adders, CLWIUA to CLW9UA, respectively.

CLWIODA to CLW2DA are counters each counting the duration of a hall call.

In the above configuration, for example, if machine A is now in the ascending direction to the first floor, relay contact F1UAb is open.

Therefore, a signal is transmitted from the power supply VAD to the adder AD1UA8 to the relay contact F2UNb to the adder AD2UA3, but the adder AD1UA outputs a signal whose positional relationship of the elevator corresponds to the first floor. .

This signal is transmitted to the adder AD2UA, and the adder AD
Input to ZUA3.

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 call number 8CAa for the 8th floor in the basket, and the receiver has a hall call for the 2nd floor, then VAD-RY2UA
a-AD2UA2-...F 8UA b-AD
8 UA2... The signal is transmitted.

At this time, adders AD2UA2 to AD7UA2 output a value indicating that the number of car stops is one, but adder 8
Since there is a new input from VAD-UPA BCAa, the output of U A2 outputs a value indicating that the number of stops is two.

These signals are input to adders ADD2UA-ADD9UA.

In other words, for the 3rd to 7th floors where there are no hall calls or car calls, the elevator only stops once for service, indicating that the distance between the elevator and the elevator is 2 to 6 floors.

At this time, if the adder is configured as shown in ADDZUA, and the operational resistors r1 to r4 are appropriately set, the time required for the elevator to service those floors will be output.

For example, for a call, weighting should be about 10 seconds based on the time to accelerate and decelerate from the elevator's rated speed, door opening/closing time, passenger entry and exit time, etc., and about 2 seconds for the first floor. .

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, there is a counter CLW2U for the duration of the hall call.
A counts and inputs it to adder AI) DZUA to add the predicted waiting time.

Figure 2 shows the predicted waiting time calculated from Figure 1 using human power.
This circuit detects the maximum predicted waiting time of a newly generated hall call and an already assigned hall call located further away.

In the figure, RIU a-7R1<)D3. RIUb~
R10Db is the relay contact of relay RIU-R10D (see Figure 8), which closes and opens when a hall call from the 1st floor up valve to the 10th floor down occurs and has not yet been assigned to any elevator, FlUAa- FloDAa is a relay contact that closes when the A machine is located in the direction from the first floor upper valve to the 10th floor descending direction, dIUA-dloDA is a diode, r5 is a resistor, and -■3 is a power supply.

The predicted waiting time according to FIG. 1 then selects only newly generated hall calls and hall calls that have already been assigned and connects them to the anode of the diode.

For example, when the elevator is in the direction of going up the first floor (relay contact F1UAa is closed, FlUAb is open), the receiver already has hall calls for going up the second floor, going up the ninth floor, and going down the tenth floor (relay contact RY2UA, RY9UA
, RYIODAa is closed)J A new 8th floor ascending hall call is made (relay contact HC8Ua in Figure 1 is closed, but since the elevator ＼ has not yet been completed, R
8Ua is a closed circuit and R8Ub is an open circuit).

In this case, ANBUA-R8Ua-d8UA-F9U
Ab-R9Ub-FIODAb-・”・”-R2Db-
FIUAa r5 (Va)'AN 9UA-RY
9UA a-d 9UA-F 10 DAD-R10D
I) -...-R2Db-FlUAa-r, -(
-v3):ANloDA-RYI ODA-d 10
DA-F9DA5-R9Db-...Song-R2Db-F1
UAa-r, -(-v3) is formed.

At this time, since the diodes d8UA, d9UA, and d10U input resistance r are connected to the negative power supply -V3, only the diode with the higher input voltage among the signals AN8UA, AN9UA, and AN10DA conducts, and the cathode side of the diode The resulting voltage is the maximum input voltage minus the forward voltage of the diode.

This voltage causes the other diode to become non-conductive since it is applied in the opposite direction.

Now, signal AN8UA. For example, set the voltage of AN9UA and ANloDA to 4V and 7V.

If it is 5V, the predicted waiting time signal ANSUA for the 9th floor ascending hall call, which is the maximum 7V, is on the anode side of the diode,
That is, it appears at the terminal of resistor r5.

This signal BNA is then transmitted to the adder ADXA shown in FIG.

Furthermore, since the relay contacts F1UAb and R8Ub are open, it is clear that the signal AN2A has no relation to the maximum value selection circuit.

FIG. 3 shows a circuit for car No. A according to the present invention, which makes it more difficult to allocate a hall call to an elevator in a standby state than to other elevators.

Other machines are also equipped with similar circuits.

Now, assuming that the 9th floor ascending hall call is assigned to machine A (therefore, it is not in a standby state), in Fig. 3a, relay contact RY9UAa is closed, so P-R
The relay CIA is turned on by the Y9UAa-CXA-N circuit, and it is detected that the A machine is not in a standby state.

Therefore, the relay contact CXAb shown in FIG. 3 is open, and the predicted waiting time signal BNA shown in FIG. 2 appears as is at the output ANA of the adder ADXA.

Then, as will be described later with reference to FIGS. 4 to 8, the generated hall call is assigned to the elevator with the smallest signals ANA to ANC of cars A to C obtained in this way.

If car No. A has no assigned hall call or car call at all (that is, is in a standby state), relay CXA in FIG. 3a detects that car No. A is in a standby state.

At this time, the relay contact CXA3 shown in Figure 3 is closed and the signal V, (ZO) having a preset value is sent to the adder AD.
Input to XA.

Therefore, the output signal AN4 is the sum of the signals BNA and 4, and the signal ANA has a larger value in the standby state than in the non-standby state.

This makes it difficult to allocate hall calls to elevators that are on standby.

The larger the value of the set voltage (4) is, the more difficult it becomes to allocate a hall call to an elevator in a standby state.

Relay contact 5 connected to the output side of adder ADXA
EVA5 is a relay contact to exclude it from hall call assignment when the N car is full or becomes unserviceable due to breakdown, etc. It is closed when it is serviceable and opens when it becomes unserviceable. be.

FIG. 4 shows a circuit which selects the minimum value of the signals of cars A to C obtained as shown in FIG. 3 and outputs it to the elevator car.

In the figure, da to do are diodes, rb is a resistance, and CM
A-CMC outputs "1" when the sum of two human forces becomes larger than diode forward voltage Vd, and relay RYA-RY
SN is a code converter, NA-NC is a NOT element, and only the diode of the minimum input signal among the signals ANA-ANC 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 Vd of the diodes, and are input to the sign converter SN.

The output of this code converter SN is applied to comparators CMA-CMC.

The other input of the comparator is ANA-ANC.

Therefore, the sum of the two forces of the comparator becomes larger than the forward voltage drop of the diode.

That is, ANA-ANC is IV, 2v, and 3, respectively.
2, the 5N(7) input signal is (1+vd): its output is -(1+Vd), and the respective inputs of the comparators CMA-CMC are Vdt(IV(1), (2Vd)).

Here, set the operating point of the comparator to 1■d, and set it to 0 at -Vd.
If the output is set to "1" above which the output is "1", only the comparator corresponding to the input showing the minimum value will output "0".

The outputs of comparators CMA-CMC are respectively knot elements NA
- To drive relays RYA to RYC through NC,
Only the relay corresponding to the minimum input turns on.

This relay operates on the circuit shown in FIG. 5 below.

FIG. 5 shows a circuit for allocating a hall call, that is, designating a service elevator.

In the figure, (,'M9UM(MIUA, CMloDM
(M2DA is a comparator.

When relay RYA (see Figure 4) and relay T (see Figure 7) are on, if the predicted waiting time to that floor is less than a predetermined value, the comparator corresponding to that floor will output an output. "0"
Therefore, the call relays RY9UA-RYIUA, RY10
One of DA-RY2DA is turned on and self-maintained.

Figure 6 shows the relay circuit, and when one of A-C takes charge of a hall call, relay HI U-H9U is activated.

One of H2D-HloD turns on.

FIG. 7 shows a timing circuit which opens the output relay contact Ta of the time relay T after a predetermined time period when a hall call occurs, and works on FIG. 5 to set the timing so that the hall call allocation becomes appropriate.

FIG. 8 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. 5, RYAa is the relay RYA in Fig. 4.
Relay contact that closes when turned on, dAIU-dAl
oD is a diode, HIU74~H10Ua, HIUb~H10Db in □ in Figures 7 and 8
are relay contacts that close and open, respectively, when relay HIU-H10D in FIG. 6 is turned on.

Ta in FIG. 5 is a relay contact that closes after a predetermined period of time after one drive circuit of the time relay T in FIG. 7 is configured, and opens immediately when the drive circuit is disconnected.

Now, in the above configuration, let us consider a case where an upward hall call occurs on the 8th floor and relay contact HC8Ua is closed.

When a call occurs, P-HC8Ua-H8U in Figure 7
The circuit b-T-N constitutes a drive circuit for the time relay T, and the time relay contact Ta shown in FIG. 5 closes after a predetermined time period of, for example, 100 m5.

Meanwhile, P -HC8Ua-H8Ub-R8U in Fig. 8
-N circuit turns on relay R8U, relay contact R8Ua in Fig. 2 closes, and when relay RYA in Fig. 4 is turned on by the circuit in Figs. An input circuit of RYIUA to RYIODA is formed.

At this time, if the predicted waiting time for Unit A to ascend to the 8th floor is, for example, 60 seconds or less (I is a value equivalent to 60 seconds), the output of the comparator CMBUA in Fig. 5 becomes "0". ,
CM8UA-HC8Ua-RYBUA-dA8U-RY
RYBUA is turned on by the Aa-T3-P circuit.

In other words, the hall call for the 8th floor is assigned to car A.

As a result, relay RY8UA becomes N-RY8UAa-HC.
Self-maintained by the 8U a-RYBUA-RYBUA a-P circuit.

Also, relay RYBUA starts to move as shown in Figure 6, and P-RY
The circuit 8UAa-H8U-N turns on relay H8U, opens relay contact H8Ub in FIGS. 7 and 8, and turns off time relay T and relay R8U.

As mentioned above, the rotation shown in Figure 7 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.

As described above, according to the present invention, a hall call is less likely to be assigned to an elevator in a standby state than to other elevators, and therefore, starting and stopping will not occur more than necessary, making it possible to save power consumption. .

Furthermore, since the present invention does not limit the allocation of hall calls, it is natural for hall calls that cannot be covered by other elevators, such as hall calls that are expected to have a long waiting time, to be allocated to waiting elevators. will be assigned.

Therefore, there is almost no effect on waiting time, and good operation can be maintained.

FIG. 9 shows another embodiment of the present invention, which is a circuit corresponding to the circuit shown in FIG. 3a.

Even when traffic demand is high, hall calls sometimes stop occurring momentarily.

For this reason, there are many cases where the elevator is momentarily put on standby, and it is not desirable in terms of the operating efficiency of the elevator to keep waiting for the hall call to be assigned each time as explained above.

Therefore, the system is designed to make it difficult to allocate a hall call by entering a standby state only when there is no allocated hall call or any call at all for a predetermined period of time or more.

Timer TX turns on relay CXA connected to its output when power P is transmitted to its input, and turns off relay CXA only after the set time has elapsed when power P is no longer transmitted to the input. It has the characteristic of

Further, elevator systems that perform group management control generally use a DC motor to perform high-speed control, and are equipped with an MG that drives a DC generator with an AC motor to obtain DC power.

This MG has a system that automatically shuts down after a predetermined period of time after there are no more calls.

Therefore, even if the relay contact CXAb shown in FIG. 3 is closed when the MG is stopped, it is possible to produce the same effect as in the above-described embodiment.

Although the above description has been mainly based on analog circuits, it is easy to convert the circuits into digital circuits at the current technological level, and it is clear that it can be implemented by programming when using an electronic computer.

[Brief explanation of the drawing]

FIG. 1 is an example circuit diagram for calculating the predicted waiting time of machine A.
Fig. 2 is an example circuit diagram for detecting the maximum predicted waiting time;
The figure shows an example circuit diagram in which it is difficult to allocate hall calls to waiting elevators than other elevators, Figure 4 is an example circuit diagram to select the one with the minimum maximum predicted waiting time, and Figure 5 allocates hall calls. Example circuit diagram, FIG. 6 is an example diagram of a relay circuit, FIG. 7 is an example diagram of a timing circuit,
FIG. 8 is a diagram of an embodiment of a relay circuit, and FIG. 9 is a circuit diagram of another embodiment of the present invention. Explanation of codes, 1CAa~10CAa...1st floor~
Relay contact that closes while the 10th floor car call is registered, HCI Ur pull C9Ua, HC2D a-HCI
OD3. , Relay contact that closes while the song 1st floor up ~ 9th floor up, 2nd floor down sieve ~ 10th floor down hall call is registered,
FlUAb-F9UAb, F2DAb-FloDAb・
...Floor detection relay contacts that open when Unit A is located on that floor and direction, AD1UA2, 3~AD
9UA! ,3;AD1ODA2,3~AD2DA2,
3ADDIUA-AI)D9UA;ADDloDA-A
DD2DA・・・Adder, CLWIUA-CLW
9UA:CLWloDA-CLW2DA -----...
Color 7ri, RIU~R10Da, RIUb-R10D
”=1st floor a
b" Relay contact that closes and opens when the hall call from ascending to 10th floor descending is not assigned to any elevator, CMA-CMC... Comparator, NA to NC...
...Knot element.

Claims (1)

[Claims] 1. A plurality of elevators that service multi-floor spaces, a hall call device installed at each floor landing for calling elevators in each direction, and means for calculating service evaluation values for each of the elevators, including waiting time for generated hall calls. and means for detecting that the elevator does not have at least the assigned hall call, in an elevator that uses the service evaluation value to select an elevator that services the hall call and assigns the hall call to the selected elevator; 1. A group management control device for elevators, comprising means for varying a service evaluation value of an elevator that does not have an assigned hall call in a direction equivalent to the increase in waiting time.