JPS602582A - Method of detecting traffic demand of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting traffic demand at each elevator landing.

In recent years, as buildings have become taller and larger, many group management systems have been adopted that can manage multiple elevators as a group and provide efficient services. This group management system allocates the most suitable elevator from among multiple elevators for one common hall call, and controls the elevators so that they respond to that hall call. Generally, information such as the car position and driving direction of each elevator, the load situation in the car, and the person in charge of car calls and hall calls is used as information, but in a more advanced group management system, the information for each hall is used. Traffic demand (occurrence of waiting passengers and degree of congestion) is detected to perform more optimal control.

By the way, as a conventional method for detecting the traffic demand at each hall, there is a method of measuring, for example, the interval at which hall calls occur or the number of calls that occur.

In other words, the smaller the interval between hall calls on a certain floor, or the greater the number of hall calls that occur within a predetermined period of time, the greater the traffic demand on that floor is determined to be. However, once a hall call is registered by the first passenger, it remains registered until the elevator responds, so it is not possible to determine how many passengers are waiting for a single hall call, and Since the frequency of calls is greatly influenced by the service status of the elevator for that elevator, the number of waiting passengers does not necessarily match the interval or number of hall calls.The above method is not satisfactory. I have not been able to obtain accurate information.

Other methods of detecting traffic demand have been proposed, such as installing industrial television cameras and ultrasonic transducers to detect the number of passengers waiting at each platform; however, these methods require very large equipment. In addition to being expensive and requiring very complex signal processing, this method has the disadvantage that it cannot distinguish between customers waiting in two directions and customers waiting in the down direction.

The present invention has been made in view of the above-mentioned points, and provides a method of detecting traffic demand at each boarding station in the summer with a very simple configuration.

In the present invention, in a crowded type, generally after the elevator departs with waiting passengers on that floor, the next hall call is registered immediately by a new waiting passenger, but in a less crowded type, the next hall call is registered for a while after the elevator departs. This was done based on the fact that there are many cases where a hall call does not occur, and is based on the time from when an elevator departs from a certain floor until a new hall call occurs on that floor, or the time from the previous hall call. Depending on the length of time from when a hall call is registered or erased due to the arrival of an elevator until the next new hall call occurs (hereinafter referred to as the "hall call non-occurrence time"), the level of traffic demand for that floor is determined. This is what I am trying to do.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 shows an example of a circuit for carrying out the misfire operation. In the figure, 1U is hall call registration number 111 for the 1st floor - upward direction, and while the hall call is registered, 1)
becomes. Similarly, 2U is the hall call registration signal for the 2nd floor'1 upward direction, D is the clock pulse generator i'j, O1J K
is a clock pulse, cl is a counter for determining traffic demand in the upward direction of the first floor, G is a gate input terminal, and ONT is a count input terminal □. In the counter C1, the hall call registration signal 1U is inverted and inputted, and when the input after inversion is rHJ state 1, that is, a state where no hall call is registered, the number of pulses of the clock pulse CLK is counted. The count value is "H" after the signal 1U is inverted.
It is initialized when it becomes rLJ from rLJ, and the count value immediately before the initialization is stored each time. Ll, Ml and H
1 is output in response to the count value, and serves as a signal representing the degree of traffic demand. When the 1 count value is smaller than a predetermined value, the signal H1 becomes "HJ and 1st floor" 1
Indicates that the traffic demand in the upward direction is a dog, and when the count value is greater than a predetermined value, the signal L1 becomes rHJ, indicating that the traffic demand is small.When the count value is in the middle, the signal L1 becomes rHJ, indicating that the traffic demand is small. Traffic signal M'1 becomes rHJ? 'li also indicates that it is in a normal state. C2 is also a counter for ascending to the second floor, L2 to H2 are signals corresponding to traffic demand in the ascending direction to the second floor, and SV is a counter that responds to a hall call by selecting the most suitable elevator from among multiple elevators (=I It is a management device.

Note that the circuits in the descending direction and the circuits in the ascending direction from the third floor onwards are not shown here because they are the same.

Figure 2 is a diagram for explaining the operation of the circuit in Figure 1.
Each waveform is shown with respect to time (horizontal axis) in the ascending direction of one scale.

At the current time '1', when one of the several elevators responds to the call for the landing on the first floor in the ascending direction and arrives, the registration for that call will be deleted, and the registration for that call will be deleted. Time T, when a hall call is registered by a new passenger who has come to the first floor after the elevator departs, is the time when a hall call has not been generated. In other words, time TI + T
2 +, 1. T8 indicates the time when the hall call registration was deleted, and time TI'+ "2' -0, T8' indicates the time when the hall call was newly registered.
The number of clock pulses OLK during the time when the inverted signal of 1U becomes "H" (the time when hall calls are not generated) is counted by the counter C1.
will be counted in

Here, for example, when the count value is 2 or less, the signal Hl is "H".
'', when the count value is 6 to 4, the signal M1 is set to ``H'', and when the count value is 5 or more, the signal L1 is set to be rHJ. At time T1/, the immediately preceding count value is 2, so the signal H1 becomes "H" and this state continues until time T4'. At time T4', the count value for the immediately preceding hall call non-occurrence time is 6, and from this point on, the signal M1 becomes rHJ. These are then repeated, i.e. in this example,
When a new hall call is registered, the traffic demand for that hall is determined based on the length of time during which no hall call has occurred immediately before, and the determined traffic demand is sent to the group control devices S and V. Similarly, signals corresponding to traffic demands in the ascending direction and descending direction at each floor are sent to the group control device SV.1 As a result, the group control device SV can select a more appropriate elevator.

In the above embodiment, the number of traffic alerts is output in six stages corresponding to the time when a hall call has not been issued, but the number of clock pulses is not limited to this. There are various ways of using 11i, such as making them correspond.

In addition, on a crowded floor, the time for which a hall call has not been issued will definitely be shorter, but on a quiet floor, the time for which a hall call has not been issued will not necessarily be longer. ), it becomes possible to perform even more accurate detection. Further, the measurement of the hall call non-occurrence time is not limited to the above-mentioned example, and it is also possible to directly measure it by processing within the first group management device.

As shown below, according to the present invention, the relationship between the length of time when a hall call has not been issued and the traffic demand is used.
It has a very simple configuration and allows you to accurately know the level of traffic demand at each platform in both the ascending and descending directions, making it even more advanced! ! r management system can be realized.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a circuit for implementing the present invention, and FIG. 2 is a diagram for explaining the operation of the circuit in FIG. 1. IU, 2U, . . . Hall call registration signals ci, c2. ．． ．． Counter OLK, Clock Tsumars L1~H1, L2~H2, Signal sv representing the degree of traffic demand, Group management device patent applicant Fujichik Co., Ltd. Fig. 1

Claims (1)

[Claims] In systems where multiple elevators are put into service for multiple floors and are managed and operated as a group, after the elevator departs from a certain floor or after the hall call for a certain floor is deleted, A method for detecting traffic demand for an elevator, comprising: detecting a time period during which a hall call has not been generated until a new hall call is generated; and determining the degree of traffic demand according to the length of the time period during which a hall call has not been generated.