JP3725884B2 - Display device using a display for displaying the switch operation processing status - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device using a display device such as an LCD configured to allow an operator to recognize the processing status of a switch operation.
[0002]
[Prior art]
There is known a display device configured not only to switch the display of the LCD display by turning the switch on and off, but also to detect that the on duration has continued for a predetermined time and to switch to another display. .
[0003]
4A and 4B are diagrams illustrating such a display device. FIG. 4A is a block diagram illustrating a configuration of the display device. When the switch shown in FIG. 4A is operated to shift from the OFF state to the ON state as shown in FIG. 4B and then returns to the OFF state, this state is detected by the switch state detection unit. Further, at this time, it is also detected whether or not the duration of the ON state exceeds a predetermined time. Next, based on the detection, the display switching control unit switches the display on the LCD display. The display is cycled in the same mode (mode 1) in response to detection of an ON state whose duration does not exceed a predetermined value, and different modes ( The display is switched to mode 2).
[0004]
For example, assuming that such a display device is used for displaying the fluid flow rate, every time the switch is turned on / off in a short time, “cumulative integration”-> “instantaneous flow rate” within the same mode (mode 1). "->" Reset integration ", and the display is cycled to return to the first" cumulative integration ". For example, in the “cumulative integration” display state, if the switch is turned on for a short time, the display is switched to “instantaneous flow rate” as described above. When it is turned off after the continuation time exceeds a predetermined time, it is switched to display another mode (mode 2). For example, “meter coefficient” indicating the details of “instantaneous flow rate” is displayed, and thereafter, “switching coefficient” from “meter coefficient” and “display unit” are sequentially displayed in cycles by a short switch operation. Similarly, in this different mode, the display is switched to display the first mode 1 depending on whether or not the ON duration exceeds a predetermined value.
[0005]
However, since such a conventional display device does not have a surface change when the switch is turned on, there may be a case where it is mistaken for “the switch is not responding”. If it is erroneously determined that the switch is not responding, the switch will remain on even though it had to be turned off in a short period of time. There was a case. In particular, when a switch with no click feeling such as a reed switch is used, there is a high possibility of erroneous operation.
[0006]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to solve such problems and make it possible for the operator to recognize the processing status of the switch operation, thereby eliminating erroneous switch operation.
[0007]
[Means for Solving the Problems]
The display device using a display device such as an LCD according to the present invention switches the display of the display device such as an LCD cycle in one mode every time it is detected that the switch is turned off within a predetermined time after the switch is turned on. At the same time, when the switch ON duration exceeds a predetermined time, it is detected and the display is switched to another mode display. And in the display of this different mode, as well as the display in the above one mode, when the switch-on is within a predetermined time, the display is cycled within this different mode and the ON duration exceeding the predetermined time is detected. Then, returning to the one mode, the same operation is repeated. In the display device according to the present invention, until the display of the display unit such as the LCD is switched according to the switch operation, the ON duration time immediately after the switch is turned on or the remaining time until the predetermined time, or It is characterized in that a display corresponding to them is made so that the operator can recognize the processing status of the switch operation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on examples. FIG. 1 is a diagram illustrating a basic configuration of a display device according to the present invention. When the switch returns from the off state to the on state and then returns to the off state, this state is detected by the switch state detection unit. Further, at this time, it is also detected whether or not the duration of the ON state exceeds a predetermined time. Next, based on the detection, the display switching control unit switches the display on the LCD display. In addition, although LCD is demonstrated below as an example as a display, other displays, such as LED and EL, can also be used for this invention. The display is cyclically switched within the same mode according to the detection of an on state whose duration does not exceed a predetermined value, and the display is switched to a different mode according to the detection of an on state having a duration of a predetermined time or longer. . The above operation is the same as that of the prior art described with reference to FIG. 4, but in addition to this, in the display device illustrated in FIG. The remaining time until switching to a different mode display is displayed using numbers, symbols, and the like. As a result, the operator can recognize the processing status of the switch operation, so that the switch is not erroneously operated.
[0009]
This switch is not only a switch having a mechanical contact such as a push button switch, for example, a type that detects a magnetic material or a magnet approaching from the outside, or a light that is led out to the outside, and it is a hand etc. Any switch can be used, such as a contactless type based on magnetic or optical detection, such as a type that operates by detecting reflections by various obstacles.
[0010]
The operation of this display device will be further described with reference to FIG. In step S1, a switch state is detected, and this state is determined in step S2. As long as it is in the OFF state, it circulates in the loop returning to step S1. When the switch-on is detected, the process proceeds to step S3, and the ON duration is displayed on the LCD display. In step S4, it is determined whether or not the switch has been turned off, and the display returns to step S3 until a switch-off is detected, and the display of the ON duration that changes with the passage of time is continued. When the switch is turned off, it is determined in step S5 whether or not the on duration is longer than a predetermined time (for example, 5 seconds). If it is determined that the time is longer than the predetermined time, the display is switched to another mode display (S6). If it is determined that the time is within the predetermined time, the display is switched to the next display in the same mode (S7).
[0011]
Here, although it has been described that even if the ON duration exceeds a predetermined time, the display is not switched to the display of another mode, but is switched when the switch OFF is detected, but as another embodiment, When the ON duration time exceeds a predetermined time, it can be configured to switch to the display of another mode immediately. That is, when a predetermined time (for example, 5 seconds) determined in advance in step S4 is exceeded, the process can proceed to step S6 without waiting for the switch to be turned off. Furthermore, the predetermined time determined in step S5 is not necessarily one, and it is also possible to set two or more times and perform an operation corresponding to each (for example, the mode 2 is shifted to 5 seconds or more, and Transition to mode 3 in 10 seconds).
[0012]
FIG. 3 is a diagram illustrating a display device applied for displaying a fluid flow rate. The LCD display of this display device is configured to display at least one line of, for example, 8-digit numbers or characters. Every time the switch is turned on and off in a short time, as in the prior art, "cumulative integration"->"instantaneous flow rate"->"resetintegration", and then cyclically to return to the first "cumulative integration" The display on the LCD display is switched within the basic mode. However, in the illustrated display device, when the switch is turned on, the on duration is displayed before the switching. This on duration display can display the time itself, for example, in seconds, but can display it with symbols, characters, and the like corresponding to them. For example, as shown in the figure, immediately after turning on (with zero ON duration), a plurality of symbols “-”, “+”, “◯”, etc. are displayed (in FIG. 3, six “-” are illustrated). The number of symbols displayed is decreased by one as time passes, and the operator is informed that a predetermined on-duration (for example, 5 seconds) has passed by erasing all symbols. it can. In addition, it can be said that the display that decreases the number of symbols with the passage of time in this way represents the ON duration time and at the same time displays the remaining time until the transition to another mode is possible.
[0013]
If the operator releases the switch and turns it off after the switch is turned on and before a predetermined on duration has elapsed, that is, before all the time lapse display symbols have disappeared, the operator is now in the "cumulative integration" display state, for example. Sometimes the next “instantaneous flow rate” in the basic mode is displayed. Alternatively, when the switch is released after the switch is kept pressed until all the time lapse display symbols disappear, it is switched to the “meter coefficient” of the display in another mode. In the display of this different mode itself, for example, “meter coefficient”, “conversion coefficient”, and “display unit” indicating the details of “cumulative integration” are sequentially displayed in a cyclic manner, as in the prior art. Then, when the switch is turned off after being continuously pressed until the switch-on duration exceeds a predetermined time, the display returns to the basic mode again, which is the same as in the prior art. In addition, the display in the different mode has been described as a common display item for each display in the basic mode. However, depending on the specific use of the display device, each display item may be different and unique. Is possible.
[0014]
However, although not shown in the figure, even in the display of this different mode, when the switch is turned on, the ON duration is displayed before the switching, which is exactly the same as the display in the basic mode described above. .
[0015]
Note that the display of the ON duration (in other words, the remaining time) has been described by taking as an example the case where the number of symbols such as “−” is decreased with the passage of time, but is displayed by being increased with the passage of time. You can also. It is also possible to display the remaining time until the display blinks faster or later with the passage of time or to change to another mode by counting down the digitally displayed numbers. In short, it is only necessary that the operator can recognize that the switch is activated and the remaining time until the activated switch transits to another mode.
[0016]
【The invention's effect】
According to the present invention, when the switch is turned on, the ON duration time is displayed immediately so that the operator can recognize the processing status of the switch operation. "Is no longer misunderstood. In particular, even when a magnetic or optical contactless switch without a click feeling such as a reed switch is used, the possibility of erroneous operation can be eliminated.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a basic configuration of a display device according to the present invention.
FIG. 2 is a diagram for explaining the operation of the display device illustrated in FIG. 1;
FIG. 3 is a diagram illustrating a display device used for displaying a fluid flow rate.
FIG. 4 is a diagram illustrating a display device according to a conventional technique.

Claims (4)

When the switch-on duration is within a predetermined time, the display is cycled within one mode for each switch operation, and when the duration is longer than the predetermined time, the display is switched to another mode. And
In the display of this different mode, similarly to the display in the one mode, in the display device that switches the same display for each switch operation according to whether the switch-on duration is within a predetermined time or more,
As soon as the switch is turned on until the display on the display is switched at the time of switch operation, the on-continuation time, the remaining time until the predetermined time or a display corresponding to them is displayed, and the processing status of the switch operation is indicated to the operator. A display device using a display device characterized in that the display device is configured to be recognized. The display device according to claim 1, wherein the display of the ON duration time or the remaining time is performed by decreasing or increasing the number of symbols displayed as time passes. The display device according to claim 1, wherein the display of the ON duration time or the remaining time is performed by decreasing or increasing a digital number displayed as time elapses. The display device according to claim 1, wherein the switch is a switch operated magnetically or optically.

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