JP2556837B2 - Display method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a digital display for displaying a car position of an elevator, and more particularly to a display system for extending its life.

[Conventional technology]

Conventionally, as this type, as shown in Japanese Patent Laid-Open No. 49-20842, there is one that indicates a car position of an elevator by using a mosaic type display.

[Problems to be solved by the invention]

However, elevators are used for the life of the building and usually require a service life of 20 to 30 years. Therefore, the mosaic type display changed to the former incandescent bulb, and semiconductor products such as long-life LED (light emitting diode) have come to be used, but it is not yet permanently usable.

In addition, since the elevator is normally energized 24 hours a day, the position indicator is also lit all year round, and the elevator is often used by users from the first floor (ground floor) during off hours such as at night. Therefore, when there are no passengers, it is controlled to return to the first floor where there are many users. Therefore, in a general elevator, the display of "1" indicating the first floor is displayed for more than half of the day. That is, in the segment type display as shown in FIG. 1, a lot of time, segment (2),
The display of (3) is turned on, and the display of other segments remains off. For this reason, there is a problem that the LED of (2) and (3) deteriorates in the segment and becomes darker than other segments as time passes.

The present invention has been made in order to solve the above-mentioned problems of the conventional ones, and provides a display method capable of extending the life of the display indicating the car return floor during the car return operation of an elevator. To do.

[Means for solving problems]

The display system according to the present invention uses a display for displaying numbers and characters by a combination of predetermined patterns on the digital display for displaying the car position of the elevator, after completing the response to the final call, Control for returning the elevator car to a predetermined floor, displaying the predetermined floor on the display, and changing the display pattern of the predetermined floor by changing the combination pattern of the display when there is no call every predetermined time By providing the means, the same character can be displayed.

[Action]

According to the display system of the present invention, after the response to the final call is completed, the elevator car is returned to a predetermined floor, the predetermined floor is displayed on the display, and a combination of the display is displayed every time a predetermined time elapses. Since the same characters can be displayed by changing the pattern and repeating the display change of the predetermined floor, the lighting time of each display element constituting the display can be averaged, and therefore, the car during the return operation of the elevator car. It is possible to extend the service life of the indicator indicating the return floor.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a segment type display used in this embodiment, which is composed of segments (1) to (7).

When the elevator car position is displayed using this display, for example, when the first floor is displayed, the segments (2) and (3) and the segments (5) and (6) are alternately turned on, that is, the segment If the combination pattern is changed, the lighting time of the display showing the first floor is half that of the conventional example with respect to the segment, and the life is doubled.
If there is a two-digit display, if the segments of each digit are turned on alternately as shown in Figs. 1 and 2, the lighting time of the display will be 1/4 and the life will be four times longer. It

Also, for characters other than 1, in the case of a two-digit display, the same effect can be obtained if the first digit and the picked-up digit are alternately turned on.

Control of such an indicator can be easily controlled by a program in the case of a computerized elevator as shown in FIG. In FIG. 3, (10) is a microprocessor (hereinafter referred to as CPU), (11) is an input / output device,
(12) indicates a display, which is controlled based on a program stored in the memory in the CPU (10), for example, according to a flowchart as shown in FIG.

That is, at step (101), it is confirmed that all the calls are gone, and at step (102), the floor where the car is stopped is confirmed. At this time, if the car is not on the first floor, step (103) drives the car to the first floor. Next, at step (104), since the car is on the first floor, the data on the first floor, that is, the segments (2) and (3), are turned on (others are turned off). Then, in step (105), it is confirmed that there is no call for 3 minutes, for example, and if a call occurs, normal operation is restored. On the other hand, if there is no call for 3 minutes, the process goes to step (106) to light the segments (5) and (6). Further, in step (107), it is confirmed again that there is no call for 3 minutes as in step (105).
Go to 4). If a call occurs, the operation returns to normal operation via step (108). As a result, if there is no call for 3 minutes or more, the segment (2), (3) or (5), (6) is set to 3
It lights up alternately every minute. Here, the time of 3 minutes can be arbitrarily set by changing the program.

In this way, by sequentially moving the illuminated segments, the illumination time of each segment is averaged, and the illumination time of each segment becomes shorter, so that the life of the display element can be extended.

The same effect can be obtained by blinking such an effect and controlling each segment. Also, turn on →
The effect becomes even more remarkable by repeating turning off, turning on in another segment, and turning off.

Although the above embodiment has described the segment type display, it is also applicable to a dot array type display in which a large number of dots are assigned to one character to form a display screen.
As shown in FIG. 5, by sequentially shifting the combination of the patterns in the vertical direction of the dot, it is possible to further extend the life of the product. Further, in this dot array system, the control shown in FIG. 5 becomes possible by increasing the flow of steps (104) to (107) in FIG. 4 from the illustrated two stages to five stages.

〔The invention's effect〕

As described above, according to the present invention, after the response to the final call is completed, the elevator car is returned to the predetermined floor, the predetermined floor is displayed on the display, and the display is displayed when there is no call every predetermined time. Since it is possible to display the same letter by repeating the display change of the predetermined floor by changing the combination pattern of, it is possible to average the lighting time of each display element constituting the display without increasing the number of display, Therefore, there is an effect that the life of the indicator indicating the car return floor can be extended during the car return operation of the elevator.

[Brief description of drawings]

1 and 2 are schematic diagrams showing a segment type display device to which the present invention is applied, FIG. 3 is a configuration diagram showing a control device of the display device, FIG. 4 is a control flowchart according to FIG. FIG. 5 is a transition diagram showing a display pattern by a dot array type display applied to another embodiment of the present invention. (1) to (7) are segments.

Claims (3)

(57) [Claims] 1. An elevator car after a response to a final call is completed by using a digital display for displaying the car position of an elevator, which is adapted to display numbers and characters by a combination of predetermined patterns. To the designated floor,
The same character is displayed by displaying the predetermined floor on the display and providing control means for repeating the display change of the predetermined floor by changing the combination pattern of the display when there is no call every predetermined time. A display method characterized by enabling it. 2. The display system according to claim 1, wherein the display is a segment system. 3. The display system according to claim 1, wherein the display is of a dot array system.