JP3677358B2 - Status display method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a state display method, and more particularly to a state display method suitable for displaying an operation state of a solenoid valve or an electric motor widely used in general industrial facilities by turning on or off an indicator lamp.
[0002]
[Prior art]
In operation control of electromagnetic valves, electric motors, etc., there is generally a distinction between manual control and automatic control at that time, and an operation state display that visually displays an operation state such as on (open) or off (closed). Has been done. Conventionally, in the case of a solenoid valve, for example, as shown in FIG. 2, for each solenoid valve V1 to V3, one changeover switch 21 for switching between manual opening, manual closing, or automatic control, One (or two) status indicator lamps 22 are arranged corresponding to each display name plate 23.
[0003]
When one indicator lamp 22 is used as shown in FIG. 2, the lighted state represents “open”, and the lighted state represents “closed”. When two indicator lamps are used, each indicator lamp lights up corresponding to “open” or “closed”. Here, the indicator lamp 22 itself does not include information for determining whether the operation state of the solenoid valve is based on automatic control or manual control. Therefore, in order to show the distinction between automatic control and manual control, as shown in FIG. 2, a changeover switch 21 is provided in addition to the indicator lamp 22 , and the operator can perform automatic control or manual operation from the selected position of the changeover switch 21. It is determined which of the controls.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional operation state display, for example, for one electromagnetic valve, one changeover switch is provided for each electromagnetic valve in addition to one or two indicator lights. Accordingly, a large number of indicator lights and changeover switches are required on the surface of a control panel or the like that displays the operating states of a large number of solenoid valves.
[0005]
Here, although various light sources have been developed for indicator lamps, and miniaturization and cost reduction are progressing, it is difficult to reduce the size and cost of the changeover switch because of the nature of displaying the selected position. It is. In other words, recently, sheet-like switches that are highly productive and easily reduced in price have been widely used in other fields. However, the sheet-like switches do not leave any trace of their operation, so the selected position is displayed. It cannot be used as a changeover switch having a function. Further, since the changeover switch has a large installation man-hour in addition to its unit price, the cost for displaying the operation state is greatly increased.
[0006]
In view of the above, the present invention makes it possible to reduce the number of elements to be displayed when displaying the operating state of a solenoid valve, an electric motor or the like on a panel or the like. It is an object of the present invention to provide a status display method that enables cost reduction for status display.
[0007]
In order to achieve the above object, the status display method of the present invention is a status display method for displaying an on-off or open-closed state of a control device by turning on or off the indicator lamp.
The status display is a first mode in which continuous lighting is performed, a second mode that is based on lighting and repeats short-time switching off for a short time compared to the lighting time, and continuous lighting-off. A third mode that is performed and a fourth mode that is based on extinguishing and intermittently repeats short-time lighting for a short time compared to the extinguishing time ,
In the first mode and the second mode, the control device is turned on or open. In the third mode and the fourth mode, the control device is turned off or closed .
The continuous lighting or extinguishing is made to correspond to the first control mode in the control device control, and the intermittent lighting or extinguishing is made to correspond to the second control mode in the control device control. .
[0008]
According to the status display method of the present invention, the amount of information that can be displayed with the status indicator lamp increases from the first mode to the fourth mode . For example, in addition to the status display of the controlled device such as open or closed In addition, it is possible to display a control mode that is a distinction between automatic control and manual control.
[0009]
In the status display method of the present invention, it is preferable that the short-time turn-off is 30% or less of the total time, and one turn-off continues for 20 msec or more. In this case, it is well recognized by human vision that the second mode is not merely flashing.
[0011]
It is preferable that the short-time lighting is 30% or less of the entire time, and one lighting is continued for 0.5 msec or more. In this case, it is well recognized by human vision that this is the fourth mode, not just blinking.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
In one preferred embodiment of the present invention, four states are displayed in the following manner.
(1) Auto-close: A mode in which the lights are continuously turned off.
(2) Auto-open: A mode in which lighting is continuously performed.
(3) Manual-closed: A mode in which lighting is periodically performed for a short time based on turning off.
(4) Manual-opening: A mode in which lighting is basically performed and light is turned off for a short time periodically.
[0013]
In the above, (3) in the case of manual-close, the cycle from lighting to the next lighting is set to be within 5 seconds. When the period is longer than 5 seconds, the waiting time until lighting is too long, and the practicality is poor. Further, the lighting time is 30% or less of the entire cycle, and the lighting time per time is at least 0.5 milliseconds (msec). Since the human sense of the ratio of the blinking time is ambiguous, when the lighting time exceeds 30% of the whole, the human sense usually feels just periodic blinking. For this reason, it cannot be easily determined that the turn-off is the keynote. In addition, the human sense is insensitive to lighting for 0.5 msec or less, and it cannot be determined that it has been lit.
[0014]
In addition, in the case of (4) manual-opening, the cycle from extinction to the next extinction is within 5 seconds. As the turn-off time, 30% or less of the entire period is set as the turn-off time, and the turn-on time is set to 20 msec at the minimum. When the turn-off time exceeds 30% of the total, it cannot be determined that the turn-on is basic, and it is determined that it is simply blinking. In addition, the human sense is insensitive to light extinction of 20 msec or less, and it cannot be determined that the light is extinguished.
[0015]
【Example】
The present invention will be described in more detail with reference to the drawings based on embodiments of the present invention. FIG. 1 shows a panel arrangement of a solenoid valve status display unit for implementing a status display method according to an embodiment of the present invention. The panel shows an example showing the operating states of the four solenoid valves V1 to V4. As the status display of each solenoid valve, an indicator lamp 11 made of a light emitting diode, a changeover switch section 12 for switching operation automatically, a manual opening switch 13 for manually opening the solenoid valve, and a solenoid valve being manually closed The switch portion 15 including the manual closing switch 14 is arranged in a row together with the display name plates 16 of the respective electromagnetic valves V1 to V4.
[0016]
The switch unit 15 is configured as a touch panel arranged in the transparent panel 10, and the wiring of the switch unit 15 is performed by, for example, printing (pattern) wiring. The effect of pressing the switch at each part can be obtained by pressing the panel part that is displayed as “Auto”, “Open”, or “Close” or touching it with fingers. It is done. This makes it possible to shift to automatic control of the solenoid valve, manually open the solenoid valve, or manually close the solenoid valve. As will be described later, the indicator lamp 11 displays an automatic or manual control mode in addition to an open or closed state display.
[0017]
As the touch panel, for example, any of a resistance type in which the electrical resistance changes according to the pressed pressure, a contact type in which the panel portion constitutes a contact, or a capacitance type in which contact with a finger is detected as a change in capacitance Can be adopted.
[0018]
The light emitting diode 11 is disposed on the back of the transparent panel 10, and the state of light emission can be easily seen from the front surface of the transparent panel 10. By adopting a light emitting diode for the indicator lamp 11, the ball breakage hardly occurs as in the conventional lamp. For this reason, it is possible to display a state with sufficiently high reliability even with a single indicator lamp 11.
[0019]
Light emission by the light emitting diode in each operation state is as follows.
(1) Auto-close: Turns off continuously and does not light up.
(2) Auto-open: lights continuously and does not turn off.
(3) Manual-closed: Turns on and off for a moment, based on turning off. The period from lighting to the next lighting is 1 second, and one lighting time is 5 msec. That is, the cycle is turned off for 995 msec and turned on for 5 msec.
(4) Manual-open: Based on lighting, it is turned off periodically for a moment. The cycle from turn-off to the next turn-off is 1 second, and one turn-off time is 50 msec. That is, the cycle of turning on for 950 seconds and turning off for 50 msec is repeated.
[0020]
As described above, in the manual display mode, a momentary turn-on or turn-off is inserted between the turn-on or turn-off in the automatic operation state and the state display by turn-on or turn-off with the same keynote. In this case, the manual opening or closing state is combined with the lighting or extinguishing key indicating manual opening or closing and the lighting or extinguishing indicating automatic operation opening or closing, so that the manual opening or closing state can be sensed without difficulty. It is transmitted to the operator. Furthermore, periodic instantaneous lighting and extinguishing alerts the operator that manual driving is different from normal automatic driving.
[0021]
As described above, since the function of displaying the control mode of automatic control or manual control is added to the function of the indicator light in addition to the status display that displays the opening or closing of the solenoid valve, the switch itself is set. The history function that shows the status is not necessary. As a result, it is possible to use a sheet-like switch group which is employed in a touch panel or the like and does not leave an operation trace, and a small switch such as a push button switch. These switches are inexpensive and can be easily installed and wired, so that the number of man-hours for production can be reduced and the cost can be greatly reduced.
[0022]
In addition, by selecting the specific duration as described above for each of short-time lighting and short-time lighting, it is possible to display four states that are sensibly reasonable for the operator.
[0023]
As a second embodiment, a status indicator having the lighting and extinguishing modes employed in the above embodiments can be incorporated in a flow path diagram such as a piping system diagram. Conventionally, there has been an example in which a state indicator lamp is incorporated at a position of an electromagnetic valve or the like in a flow chart. However, since there are many cases where the operation switch is not arranged in these flow charts, conventionally, whether the solenoid valve or the like is controlled in an automatic operation or manual operation only by turning on or off with the status indicator lamp. Could not be judged. When the status display method of this embodiment is adopted, the automatic-manual control mode can be displayed only with the status indicator lamp, so that the number of elements necessary for display can be reduced or erroneous operation can be effectively prevented.
[0024]
In addition, although the example which displays a control aspect in addition to the open or closed operation state of a solenoid valve was given in the said Example, the status display is possible about arbitrary items, such as other arbitrary control apparatuses.
[0025]
Although the present invention has been described based on the preferred embodiment, the present invention is not limited to the configuration of the above-described embodiment (example), and various modifications can be made from the configuration of the above-described embodiment. A state display method with corrections and changes is also included in the scope of the present invention.
[0026]
【The invention's effect】
As described above, according to the status display method of the present invention, the amount of information that can be displayed with the status indicator lamp can be increased, the number of elements required for status display can be reduced, or the degree of freedom of element selection is improved. Therefore, the present invention can achieve downsizing and cost reduction, so that the present invention has a remarkable effect of reducing the cost for displaying the status.
[Brief description of the drawings]
FIG. 1 is a front view of a display panel for implementing a state display method according to an embodiment of the present invention.
FIG. 2 is a front view of a display panel for performing a conventional status display method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Transparent panel 11 Indicator lamp 12 Automatic change-over switch 13 Manual open switch 14 Manual close switch 15 Switch part 16 Display nameplate 21 Changeover switch 22 Indicator lamp 23 Display nameplate

Claims (3)

In the state display method for displaying the on-off or open-closed state of the control device by turning on or off the indicator light,
The status display is a first mode in which continuous lighting is performed, a second mode that is based on lighting and repeats short-time switching off for a short time compared to the lighting time, and continuous lighting-off. A third mode that is performed, and a fourth mode that is based on extinguishing and intermittently repeats short-time lighting for a short time compared to the extinguishing time ,
In the first mode and the second mode, the control device is turned on or open. In the third mode and the fourth mode, the control device is turned off or closed .
The continuous lighting or extinguishing is made to correspond to the first control mode in the control device control, and the intermittent lighting or extinguishing is made to correspond to the second control mode in the control device control. Status display method.   The state display method according to claim 1, wherein each of the second and fourth modes is performed in a periodic mode with a period of 5 seconds or less.   The short-time turn-off occupies 30% or less of the entire time, and one turn-off continues for 20 milliseconds or more, and the short-time turn-off occupies 30% or less of the entire time. The state display method according to claim 2, wherein one lighting is continued for 0.5 milliseconds or more.

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