JPH083746B2 - Graphic display - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic display device used in a control device using a computer, and more particularly to a device with improved operational safety.

(Prior Art) A graphic display device is known, for example, from Japanese Utility Model Publication No. 58-47482 (new model registration No. 1,557,468) proposed by the present applicant. FIG. 5 is a block diagram of such a device. In the figure, 10 is a plant, 20 is a control station that controls the plant 10, and 30 is an operator's unit that controls the man-machine interface between the control station 20 and the operator.
It is a station. The operator's station 30 is equipped with a keyboard 40 for operation input and a CRT 50 for displaying.

In such a device, the operator monitors the operating state of the plant 10 based on the display of the operator's station 30 and also changes the instruction of the set value and transmits it to the control station 20.

By the way, the graphic display device originally replaces the conventional instrumentation panel so as to occupy a small installation area. The instrumentation panel is provided with the display section shown in FIG. 6, where (A) is a lamp, (B) is a push button, and (C) is a switch with a cover. The lamp is inoperable,
The push button is operable, and the cover with the cover covers the push button to prevent erroneous operation.

Next, a display corresponding to this will be described on the graphic display device. FIG. 7 is an explanatory view of the graphic display device,
(A) operation, (B) confirmation request, (C) confirmation, (D)
Indicates the output. When the operator presses the operation key 40 (A), the display unit corresponding to the push button and the switch with the cover blinks the reconfirmation mark to call the operator's attention (B). In response to this, when the operator pressed the confirmation key (C), the operator's station had changed the state in response to the instruction (D). The display unit corresponding to the lamp displays an erroneous operation message when the operation key is pressed.

(Problems to be Solved by the Invention) However, in the conventional device, since the push button and the switch with cover are not displayed separately, there is no viewpoint of preventing erroneous operation unlike the switch with cover. That is, the designer initially thought that the confirmation key was interposed, so that it was thought that sufficient erroneous operation was prevented, but in actual operation, the operator considers the operation key and the confirmation key as a series of operations. Since it does, it turns out that a safety device is needed for particularly important operating keys.

The present invention solves such a problem and an object thereof is to provide a switch with a cover in a conventional instrumentation board realized on a graphic display device.

(Means for Solving Problems) The present invention for achieving such an object is a graphic display device attached to an operator operating device for a distributed control device using a computer, and has the following configuration. It is a thing.

That is, the key switch section is provided to simulate the push button of the instrument panel to indicate the control amount of the controlled object.

Further, the graphic screen is surrounded by a key cover display section for switching the input mode of the key switch section between a state in which the cover is covered and a state in which the cover is open, and a cover displayed on the key cover display section. An operation output display section for displaying the operation output value in the area and an operation state display section for displaying whether or not the key input of the key switch section is effectively pressed are provided, and the operation output value is output to the controlled object. I am trying to display whether or not it is being suppressed.

Then, for the key switch section corresponding to the operation output display section surrounded by the cover, first press this key to open this cover, and then press this key switch section to indicate the operation output value as the controlled variable to the controlled object. In addition, when the key switch portion is not operated for a predetermined time, the key switch portion is returned to the state surrounded by the cover.

(Operation) Each component of the present invention has the following operation. The key cover display portion functions as a cover of the switch with a cover, and the cover is opened by the first operation of the key switch portion. When the key switch section is subsequently operated, an operation output is made according to the contents of the operation output display section. The operation state display unit prompts the operator whether or not the input of the key switch is valid. When the operator does not operate the key switch section for a predetermined time, it is considered that the operation has been completed and the key switch section is returned to the state surrounded by the cover.

(Example) The present invention will be described below with reference to the drawings.

FIG. 1 is a configuration block diagram showing one embodiment of the present invention. In the figure, reference numeral 40 designates a key switch section for instructing a controlled amount of a controlled object, which is provided with an up key for increasing an instructed value and a down key for decreasing the instructed value, and corresponds to a push button of a conventional instrument panel. 51 is an instrument diagram provided on the screen of the CRT50, and such instrument diagram 51 has a plurality of instruments on one screen, for example 8
Displayed in parallel. Reference numeral 52 is a display diagram of the key cover. Here, there are two systems, that is, an ON side indicating that the control operation is being performed and an OFF side indicating that the control is stopped, and they are distinguished by the suffixes a and b. Reference numeral 53 indicates a key cover display in the shape of a substantially square, which is a display portion of the operation output value provided inside FIG. 52, and is a digital display of 2 to 3 digits. 54 is an operation diagram provided on the lower side of the instrument diagram 51,
The contents of the operation output value display 53 are changed according to the state of the key switch section 40 to enable the operator to identify whether or not the key input is valid.

31 is an operation input section operated by the key switch section 40,
32 is a key cover display. The key cover that manages the display of FIGS. 52a and 52b is a display unit, 33 is the operation output display unit that manages the operation output displays 53a and 53b, and 34 is the operation status display unit that manages the operation status display 54. , 35 are each display unit 32 according to the state of the operation input unit 31.
The display control unit that controls ~ 34.
It is incorporated as an internal function of the station 30. The display control unit 35 releases the cover display of the key cover display unit 32 by the notification from the first operation input unit 31, and displays the contents of the operation output display unit 33 by the notification from the second operation input unit 31. Output as a target value to the controlled object.

The operation of the apparatus thus configured will be described below. FIG. 2 is a diagram for explaining the operation of the apparatus shown in FIG. 1, and is arranged in chronological order in the order of (A) to (E).

Initially, instrument view 51 is off (A). When the operator presses the key switch section 40, the operation status display section 54 lights up to indicate that the input is valid, but the key cover display section 52 and the operation output display section 53 light up the off side 53b. It does not affect the manipulated value (B). Key switch part 40
Once the finger is released from, the display on the key cover display portions 52a and 52b disappears (C). When the key switch section 40 is subsequently pressed, the operation status display section 54 lights up to indicate that the key input is enabled, and the operation output display section 53 is turned on 53
The a lights up and the operation instruction value changes according to the key switch unit 40 (D). When the finger is released from the key switch section 40, the key cover display sections 52a and 52b are turned on to prevent an erroneous operation, and the operation output display section 53a is turned on to display that the output is output to the controlled object (E ).

FIG. 3 is a time chart explaining the operation of the apparatus shown in FIG. Here, in order to clarify the correspondence with the switch with cover, the display of the key cover display section 52, the operation of the key switch section 40, and the operation output value to the controlled object represented by the operation output display section 53a are shown.

When the key switch unit 40 is first pressed, the signal turns on, and in response to this, the signal representing the cover turns off. Then, when the key switch unit 40 is pressed, the signal is turned on, the operation output signal is output, and at the same time, the key cover signal is turned on. If you want to stop the operation midway, if you leave it in the state of FIG. 2 (C) for a while, the timer will time out and return to the state of FIG. 2 (A). Even if the key switch section is operated, the state returns to that shown in FIG.

FIG. 4 is an explanatory diagram of an application example of the present invention. In the embodiment of FIG. 1, the case where the number of output points is 1 is shown, but there are those that return the response to the output as in the case of the solenoid valve, and the state of being pressed like the self-illuminating switch is shown. Some are displayed as is. Therefore, we have provided a combination of 0, 1, and 2 input / output points in accordance with these applications, and prepared a product with a key cover display and operation output display to match this. There are {Fig. 4 (A) ~
(F)}.

(Effects of the Invention) As described above, according to the present invention, since the operation unit corresponding to the switch with cover is realized on the operator's station, there is an effect that the chance of erroneous operation is significantly reduced.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention, and FIG.
FIG. 4 is an operation explanatory view of the apparatus of FIG. 1, FIG. 3 is a time chart explaining operation of the apparatus of FIG. 1, and FIG. 4 is an explanatory view of an application example of the present invention. FIG. 5 is a block diagram of the configuration of a conventional device, FIG. 6 is an explanatory diagram of a display section of an instrument panel, and FIG. 7 is an explanatory diagram of a conventional graphic display device. 30 …… Operators station, 31 …… Operation input section, 32 …… Key cover display section, 33 …… Operation output display section,
34: Operation status display section, 35: Display control section. 40 …… Key switch section, 50 …… CRT, 51 …… Instrument drawing, 52
…… Key cover display, 53 …… Operation output display, 54 …… Operation status display.

Claims (1)

[Claims] 1. A graphic display device attached to an operator operating device for a distributed control device using a computer, which is provided by simulating a push button of an instrumentation panel to indicate a control amount of a controlled object. The key switch section (40), the key cover display section (32) for switching the input mode of this key switch section between the state of covering the cover and the state of opening the cover, and this key cover display section. The operation output display section (33) that displays the operation output value within the area surrounded by the display cover and the operation status display section (34) that displays whether the key input of the key switch section is pressed effectively. It has a graphic screen that displays whether the operation output value is being output to the controlled object or is being suppressed, and presses the key switch section corresponding to the operation output display section surrounded by the cover first. When this cover is opened and this key switch is subsequently pressed, the operation output value is indicated as the control amount for the controlled object, and when the key switch is not operated for a predetermined time, the key switch is surrounded by the cover. A graphic display device characterized by returning to a closed state.