JPS6158393B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator control device that allows an elevator to perform normal operation and power-saving operation.

Conventionally, in order to reduce the amount of electricity consumed by elevator operation, the speed (acceleration, maximum speed) of the car was lowered than usual (for example, the maximum speed was reduced from 240 m/min to 120 m/min when traffic was interrupted). Power-saving operation is being carried out by lowering the power. However, since this power-saving operation method reduces the speed of the car, it inevitably takes time to respond to hall calls and car calls. The time (time from boarding the car to arriving at the desired floor) becomes longer, causing a problem that makes passengers waiting at the landing and passengers in the car feel impatient.

This invention solves the above-mentioned drawbacks, and provides an elevator control device that controls the power-saving operation when a service-related problem is likely to occur, and allows the user to use the elevator with peace of mind without deteriorating the service. This is what I am trying to do.

An embodiment of the present invention will be described below based on the drawings. For convenience of explanation, a case will be described in which one car is installed in a six-story building.

In the figure, 1u to 5u and 6d to 2d are hall call signals for the 1st floor up direction to the 5th floor up direction, and the 6th floor down direction to the 2nd floor down direction, respectively, and when a hall call is registered, it becomes "H"It's a signal. 1
K to 6K are car call signals for the first to sixth floors, respectively, and are signals that become "H" when a car call is registered.

Reference numeral 8 denotes a speed limit determination device that determines whether or not to limit power-saving driving based on predetermined conditions, and outputs a determination result 8a that becomes "H" when power-saving driving is restricted. 9 is a hall call duration calculation device that calculates the time that has passed since the hall call was registered (hereinafter referred to as duration time);
Hall call duration signals 91u to 95u and 96d to 92d for the 5th floor up direction and the 6th floor down direction to the 2nd floor down direction are output, respectively.
In addition, duration 91u to 95u and 96d to 9
2d becomes zero when each hall call is answered. 10 is an expected arrival time calculation device that calculates a predicted value of the time required for the car to arrive at each landing (hereinafter referred to as expected arrival time);
Expected arrival time signals 101u to 105u and 106d to 102d for landings in the upward direction and downward direction from the 6th floor to the downward direction from the 2nd floor are output, respectively. 111u to 115u and 116d to 11
2d are determination circuits for hall calls for the 1st floor up direction to the 5th floor up direction and the 6th floor down direction to the 2nd floor down direction, respectively, and when the predicted waiting time of the hall call is longer than a predetermined time, the corresponding determination signals 121u to 2d are determined. 1
25u and 126d to 122d are output as "H", and these judgment circuits 111u to
115u and 116d to 112d are composed of similar circuits, an adder 13, a gate circuit 14, and a comparator 16. If the determination circuit is explained as 111u, the adder 13 has a duration of 91u in the upward direction of one floor. It adds the expected arrival time signal 101u of the landing for the first floor upward direction and outputs the result, and the gate circuit 14 receives an "H" signal (the first floor upward hall call signal 1u) at the G point. At this time, the input signal at point I (output signal of adder 13) is output as is, and when a signal of "L" is input at point G, it outputs zero. The evaluation value signal 14a, that is, the value of the input signal at point Y is a constant value (=40
When the value of the input signal at point X is greater than or equal to the value of the input signal at point It outputs a signal of "L". 17 is the judgment signal 121u to 125u and 1
OR gate to which 26d to 122d are input, 18
19 is a power-saving operation signal that becomes "H" when a power-saving operation command is issued, and 19 is a maximum car speed of 240 m/
"L" when running as 120m/min.
A speed command signal that becomes "H" when running in minutes,
20 is a running command signal which becomes "H" when the car is running and becomes "L" when it stops; 21 is a speed pattern signal 21a when the running command signal 20 becomes "H"
(acceleration pattern, constant speed pattern, and deceleration pattern); 22 is a speed control device that controls the speed of the car according to the speed pattern signal 21a; 23 is the output of the OR gate 17, that is, the determination result signal 8a is input to the NOT gate, 24 is input to the output of this NOT gate and power saving operation 18, and outputs the speed command signal 19.
It is an AND gate.

Next, the operation of this embodiment will be explained.

Currently, a power saving operation command has been issued, that is, power saving operation 18 has been issued as "H".
It is assumed that the car is stopped on the 6th floor in the downward direction and the car calls on the 3rd and 4th floors are registered, that is, the car call signals 3k and 4k on the 3rd and 4th floors are emitting an "H" signal. Also, the up call on the first floor is registered, that is, the hall call signal 1u in the up direction on the first floor emits an "H" signal and 5
Assume that seconds have passed. The expected arrival time calculation device 10 is already well known, so a detailed explanation will be omitted. For example, assume that the time required for the car to stop in response to a call is 10 seconds, and the time required for the car to advance one floor is 2 seconds. , the expected arrival time to each landing (by direction) is calculated by sequentially cumulatively adding the values from the car position floor according to the direction of travel of the car. Therefore, the number of floors scheduled for the car to stop is 2 before the car reaches the upbound landing on the 1st floor from the 6th floor.
Since the number of floors to be traveled is 6-1 = 5 floors, the expected arrival time signal 101u is 10 × 2 + 2
×5=30 seconds is calculated and output. On the other hand, the duration time signal 9 of the up call on the first floor is generated by the hall call duration calculation device 9 (detailed explanation is omitted as it is well known).
Since 1u is output as 5 seconds, the adder 13 inputs 5+30=35 seconds to the I point of the gate circuit 14. Further, since the hall call signal 1u for the first floor upward direction is "H", the gate circuit 14 outputs the evaluation value signal 14a of the first floor upward call as is the output of the adder 13, and outputs 35 seconds. Therefore, the value of the evaluation value signal 14a (=35 seconds) is determined by the comparator 16.
<Judgment value signal 15 (=40 seconds), so the judgment signal 121u is output as "L". Judgment signals 122u to 125u and 126d to 122 are used for other hall calls in the same manner as for the first floor hall calls.
d is set, but since only the first floor up call is registered as the hall call, the above judgment signal 122
u~125u and 126d~122d are all "L". Therefore, the judgment result signal 8a is "L" by the OR gate 17, the output signal of the NOT gate 23 is "H", and the power saving operation signal 18 is "H", so the speed command signal 19 is determined by the AND gate 24. Since it becomes "H", power saving operation is enabled and the car is operated at a maximum speed of 120 m/min.

If the duration of the first floor up call is 15 seconds, the evaluation signal 14a of the first floor up call is 15 seconds.
+30=45 seconds, so the comparator 16 determines that the value of the evaluation value signal 14 (=45 seconds)>the value of the judgment value signal 15 (=40 seconds), so the judgment signal 121u becomes "H" this time. Therefore, the judgment result signal 8a becomes "H" by the OR gate 17, the output signal of the NOT gate 23 becomes "L", and therefore the speed command signal 19 becomes "H" by the AND gate 2.
4 becomes "L", so the power saving operation is disabled and the car is operated at a maximum speed of 240 m/min.

In this way, if the waiting time for a hall call is likely to be longer than a predetermined time, the power saving operation is inhibited, thereby making it possible to prevent long waiting times.

The above example shows the case where only one car is installed in the building, but if multiple cars are installed, the above conditions can be determined for the hall call handled for each car. It is a good thing to do. Furthermore, in the above embodiment, the service problem was caused by a long wait for a hall call, but the service problem is not limited to this, and the boarding time of passengers in the car becomes longer.
(b) The time required for passengers to complete the service (the time it takes for a passenger to arrive at the landing to arrive at their destination floor) becomes longer, and (c) the method of providing forecasts to customers waiting at the landing before the arrival of the car that will respond to the landing call. Wrong forecast (other baskets arrive before the forecast basket)
In the method of displaying the predicted time until the arrival of a car that responds to a landing call, delays in arrival (arrival later than the indicated time) may occur, and It is conceivable that waiting passengers may be left behind at the boarding hall due to the boarding being full or that passengers may be unable to pass the boarding hall call. In order to reduce the problem in A above, the conditions for preventing power-saving operation should be set to the predicted registration time of a car call (predicted value of time from when a car call is registered until the car is answered). The sum of the duration time and the expected arrival time of the car may be set to be equal to or longer than a certain time. In addition, the above-mentioned blocking condition can be applied to passengers from a specific floor (e.g., boardroom floor) or when a car call on a specific floor is registered. Priority service can be given to passengers traveling to guest rooms near the top floor of the hotel. In addition, in order to reduce the problems described in C and D above, the condition for preventing power-saving operation can be set to (i) When there are a predetermined number or more of boarding calls that are likely to result in missed forecasts or delayed arrivals. In addition, the above prevention condition is set when there are more than a predetermined number of hall calls where the car is left unloaded or full. It can also be configured to provide services.

Furthermore, in the above embodiment, a common judgment value was used for each landing (by direction) as a condition for preventing power-saving operation, , restaurant, main floor, etc.), and the service status of the service for boarding hall calls (e.g., full passage, full passengers left behind, incorrect forecast, etc.). Also good. For example, by setting a small determination value for the boardroom floor, it becomes possible to provide priority service over other halls.

Furthermore, in the above embodiment, the car speed is set in two stages so that when the conditions for preventing power-saving operation are met, the car is operated at the normal speed, but it is not necessarily necessary to operate the car at the normal speed. ,
In a system that controls power-saving operation by dividing the car speed into multiple stages, it is clear that when the above conditions are met, the same effect can be obtained even if the car is operated at least at a specified speed. be.

As described above, this invention is an elevator that changes the speed of an elevator within a predetermined level to perform normal operation and power saving, and when the speed is reduced to perform power saving operation, service problems may occur. When this is likely to occur, the system predicts this and cancels power-saving operation as soon as possible.
Therefore, it has the effect of suppressing power consumption, not degrading the elevator service, and allowing the elevator to be used with peace of mind.

[Brief explanation of the drawing]

The figure is a circuit diagram showing an embodiment of an elevator control device according to the present invention. In the figure, 8 is a speed limit determination device, 8a is a determination result signal, 18 is a power saving operation signal, 19 is a speed command signal, 20 is a travel command signal, 21 is a speed pattern generator, 21a is a speed pattern signal, and 22 is a It is a speed control device.

Claims (1)

[Claims] 1. A power-saving operation command signal issued artificially or in response to traffic demand is input, and when this power-saving operation command signal is not issued, the speed of the elevator car reaches the rated speed. the speed pattern generator, which generates a speed pattern signal such that when the power saving operation command signal is issued, the speed of the car only reaches a speed lower than the rated speed; Equipped with a speed control device that controls the speed of the car according to a speed pattern signal, the elevator hall call waiting time or car call registration time is predicted, and the elevator service is controlled based on the prediction. Means for calculating a service status evaluation value indicating whether or not the service is performed in a short time: Comparison means for comparing the above evaluation value with a predetermined judgment value to determine whether the service status is good or bad: This comparison means A signal representing the comparison result is input, and the speed pattern generator
Provided at the power-saving operation command signal input section, when a signal indicating that the time until service completion is short and the service status is good is input from the comparison means, the power-saving rotation command signal is input to the speed pattern generator. and, on the other hand, when a signal indicating a poor service condition is input due to a long time until service completion, gate means for blocking input of the power saving operation command signal to the speed pattern generator. Elevator control device.