JPH02162411A - Touch operation device - Google Patents

Abstract

PURPOSE:To realize the touch operations with the actual operating feeling by using a photoelectric coordinate input means having no mechanical action to detect the position of a touched position. CONSTITUTION:The display screen of a display device 20 contains a touch detector 21 to detect the touch of the screen, and a photoelectric touch position detector 22 is set in front of the detector 21. Then the detection signal ST of the detector 21 and the detected coordinate signal SC of the detector 22 are outputted to a computer 23 which carries out the touch operations via the device 20. Thus, the coordinates of a touched position are detected by a photoelectric coordinate input means with no mechanical action and also inputted as a valid operation signal as long as a fact that the display screen was touched is detected. Thus, it is possible to realize the touch operations with the actual operating feeling.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a touch operation device used as a display operation means for a plant monitoring device or the like.

(Prior art) In recent years, in the field of plant operation where industrial plants are operated, symbols, part charts, and numerical values are displayed on the C87 screen, instead of so-called panel operation in which lamps, various instruments, switches, etc. are installed on the control panel. The so-called CRT operation, in which information such as information is displayed and monitoring operations are performed using an input device, is becoming mainstream.

In this CRT operation, the CRT nibran 1~monitoring screen is displayed on a-line fishing, but recently,
Touch operations that use the CRT for operations are increasingly being applied.

In this touch operation, a touch coordinate detection means for detecting the coordinates of the touch position is provided on both sides of the CRT as an input device, and the coordinates of the symbol displayed on the C87 screen are detected.
Based on the touch position seat ring detection signal output from the touch coordinate detection means, the mechanical object that has been touched is determined, and the plant or the like is operated based on the determination result.

Therefore, touch operation devices that perform touch operations can perform monitoring and operation on the same screen, making it easier to understand the status of objects to be operated such as plants. There were many switches.

Switches displayed on the CR7 screen can be replaced with hail symbols, which has the advantage of saving space on the control panel.

FIGS. 9(a) and 9(b) illustrate a conductive film contact type touch position coordinate detecting means used in such a touch operation device.

This conductive film contact type touch position coordinate detection means.

A detection section is provided, which is constructed by pasting two transparent conductive films 1 and 2 together with a spacer 3 interposed therebetween, and a voltage is applied in the direction from the transparent conductive film 1 to the transparent conductive film 2. Then, when touched at any position, the magnitude of the current flowing in the X direction and Y direction of the transparent conductive films 1 and 2 is determined depending on the touched position, so based on the magnitude of the current, The x and - coordinates of the touch position can be obtained, and the touch position coordinates on the C87 screen 4 are determined based on the coordinates.

FIGS. 1.theta.(a) and (b) illustrate a capacitive contact type touch position coordinate detection means used in a touch operation device.

In this capacitive contact type touch position coordinate means, a conductor 6 is coated on a transparent film 5 in a mesh shape, and between opposing electrodes 7, 8 and 9, 10, and between electrodes 11.12 and 13.14. A frequency signal is applied to each to cause oscillation.

In this state, when the transparent film 5 is touched, the capacitance of the transparent film 5 in the X direction and the Y direction changes depending on the touch position.
8 and electrodes 9, 10, and electrodes 11, 12 and electrode 13,
Since the resonance frequency between 14 and 14 changes, the X and Y coordinates of the touch position can be obtained based on the variation in the resonance frequency, and based on the coordinates, the touch position coordinates of the C87 screen 4 are determined. .

FIGS. 11(a) and 11(b) illustrate a photoelectric touch position coordinate detection means used in a touch operation device.

This photoelectric type touch position coordinate detection means.

A large number of light emitting elements 15 are arranged parallel to the X direction of the C87 screen 4 at regular intervals, and a large number of light emitting elements 15 are arranged so as to be able to receive the output light of the light emitting elements 15 across the C87 screen 4. In parallel to the light receiving element 16 and the V direction of the C87 screen 4,
It includes a large number of light emitting elements 17 arranged at regular intervals, and a large number of light receiving elements 18 arranged so as to be able to receive the output light of the light emitting elements 17 across the C87 screen 4.

Then, when the C87 screen 4 is touched, the light receiving element 16 and the light receiving element 18 are shaded according to the touch position, and the light receiving element 16 and the light receiving element 18 are blocked.
X of the touch location based on the position coordinates of.

You can get the Y coordinate and based on that coordinate, C87
The touch position coordinates on the screen 4 are determined.

(Problems to be Solved by the Invention) However, such conventional touch operation devices have the following disadvantages.

When a conductive film contact type touch position coordinate detecting means is used as the touch position coordinate detecting means, the durability is limited and reliability is low because it involves mechanical operation. For example, as shown in FIG. 12, the conductive film 1,
2 becomes stuck, a contact output is obtained even though the operator has stopped the operation, resulting in an inconvenience such as equipment operation contrary to the operator's intention.

In addition, the conductive films 1 and 2 are sensitive to temperature and humidity, and the part that is in close contact with the C87 screen 4 may gradually shift, and in such a case, the relationship between the touch position and the input coordinates may shift. arise.

Further, the capacitive contact type touch position coordinate detecting means also has the same disadvantages as the conductive film contact type touch position coordinate detecting means.

On the other hand, photoelectric type touch position coordinate detection means does not have a mechanical operation part like contact type touch position coordinate detection means, so it does not cause the above-mentioned inconvenience. The touch position coordinate detection means has the following disadvantages.

That is, as shown in FIG. 13, if a part of the human body or the operator's clothing accidentally blocks the optical path of the detection light output from the light emitting element 15 to the light receiving element 16, the C87 screen 4
The same phenomenon occurs when I touch .

There is a risk of careless operation.

Furthermore, as shown in FIG. 14, even if the operator stops touching the C87 screen 4 just before the screen, if the finger interrupts one optical path of the detection light from the light emitting element 15 to the light receiving element 16, the touch Since the same phenomenon occurs when the operation is performed, there is an inconvenience that the operation is executed even though there is no real feeling of the operation.

The present invention solves these problems of the prior art.

Detect touch coordinates without mechanical movement, and
The object of the present invention is to provide a touch operation device that can detect when an operator touches the CR7 screen and provides a real operating feeling.

[Configuration of the Invention (Means for Solving the Problems) The present invention includes a touch detection means for detecting that a display screen has been touched, and a photoelectric coordinate system attached immediately in front of the display screen for detecting a shaded coordinate position. The apparatus includes an input means, and an operation coordinate input means for inputting, as a valid operation signal, a detected coordinate signal of the photoelectric coordinate input means when a touch detection signal is output from the touch detection means.

(Function) Therefore, the touch position coordinates are detected by the photoelectric coordinate input means without any mechanical movement, and the touch position coordinates are valid on the condition that the display screen is detected to have been touched. Since it is input as an operation signal, a touch operation with a real operation feeling can be realized.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a touch operation device according to an embodiment of the present invention.

In the same figure, a touch detection device 21 for detecting that the display screen is touched is disposed on the display screen of one display device 20, and the front surface of the touch detection device 21 is shown in FIG. 1I(a). A photoelectric touch position detection device 22 similar to that shown in , (b) is provided. Then, the detection signal ST of the touch detection device 21, and.

The detected coordinate signal SC of the touch position detection device 22 is output to a computer 23 that executes a touch operation using the display device 20.

Furthermore, in this case, the touch detection device 21 covers the entire display screen 20a of one display device 20, as shown in FIG.
Transparent conductive film 24 whose resistance value changes when pressure is applied
and means for measuring the resistance value of the conductive film 24 (as shown in the diagram)
It can be configured by

The display device 20 displays, for example, a system diagram screen for plant monitoring as shown in FIG.

On this plant monitoring screen, a pump symbol is displayed as the device to be operated. When you touch this pump symbol, two new operation key symbols for operating the pump are displayed, and these operation keys The pump can be operated by touching the symbol.

FIG. 4 shows an example of such a computer 23.

In the figure, the detection signal ST of the touch detection device 21 is
The detected coordinate signal SC applied to the operation input processing means 31 via the contact detection means 30 and output from the touch position detection device 22 is inputted to the coordinate input means 32 as a position a signal on the display screen 20a of the display device 20. After being converted into SS, it is added to the operation input processing means 31.

The operation input processing means 31 determines the coordinate signal SS as a signal based on a valid operation on the condition that the detection signal ST is input, and outputs the coordinate signal SS when it is determined to be valid.
is output to the operation information processing means 33 as an effective coordinate signal SSa.

Further, the control device state input means 35 inputs the operating state of the operated equipment and various process data of the plant 40 from the control device 50 that performs automatic operation/monitoring of the plant 40. Various data inputted by the means 35 are taken out by the operation information processing means 33 as appropriate.

The operation information processing means 33 determines which symbol on the display screen of the display device 20 has been touched at that time based on the effective coordinate signal SSa input from the operation input processing means 31, and uses the result of the determination. Based on display device 2
Update the display contents of 0. Then, the contents of the display data to be outputted to the display means 36 are updated in accordance with the updated contents. Further, when an operation is performed on any of the equipment in the plant 40, the operation information is transmitted to the operation output means 37.
It is output to the control device 50 via.

The display means 36 forms a display signal to be output to one display device 20 in response to the display data added from the operation information processing means 33.

FIG. 5 shows the operation input processing means 31. A specific example of the operation information processing means 33 is also shown.

In the operation input processing means 31, the coordinate information storage section 31a
is for storing the coordinate signal SS output from the coordinate input means 32, and the contact determination section 31b stores the coordinate signal SS output from the coordinate input means 32, and when the touch detection signal ST is output from the contact detection means 30, the contact determination section 31b
The coordinate signal SS stored in the coordinate information storage section 31a is output as an effective coordinate signal SSa to the coordinate information output section 31c, and the coordinate information output section 31c uses the effective coordinate signal SSa input from the contact determination section 31b. is temporarily stored and output to the operation information processing means 33.

In the operation information processing means 33, the touch content determination unit 33
a determines which of the symbols on the screen displayed on the display device 20 at that time has been touched, based on the effective coordinate signal SSa input from the operation input processing means 31. Yes, the determination result is output to the operation target specifying section 33b and the operation output command creation section 33c.

The operation target identification unit 33b determines whether the touch target symbol determined by the touch content determination unit 33a is a symbol of any operation target device, and when determining that the device has been operated, identifies the device. It outputs information to the display data creation section 33d.

The operation output command generation unit 33c determines whether the touch target symbol determined by the touch content determination unit is an operation symbol such as an operation key, and when it is determined that the operation symbol has been operated, the operation output command creation unit 33c determines whether the touch target symbol determined by the touch content determination unit is an operation symbol such as an operation key, and when it is determined that the operation symbol has been operated, the operation output command generation unit 33c generates a command corresponding to the operation content. It is used to create operation information.

The operation information is output to the operation output means 37.

The display data creation unit 33d displays various process values necessary for the selected plant monitoring screen based on the process data input from the control device status input means 35, and also displays touch information notified from the operation target identification unit 33b. Display data for switching the display state of the symbol of the operated device to a selected state is created, and the display data is output to the display means 36.

FIG. 6 shows an example of a process related to a touch operation performed by the computer 23.

First, with the storage area for storing coordinate information cleared (process 101), a touch operation is performed and the coordinate signal S
Wait for C or touch detection signal ST to be input (
input 102).

When any signal is input through the input 102, it is determined whether the signal is a coordinate signal SC or a touch detection signal ST (103), and if it is a coordinate signal, the coordinates of the coordinate signal SC are Judgment 104), Judgment 1 to determine whether the screen is included in the valid operation area of the screen being displayed.
When the result of step 04 is YES, the input coordinate signal SC is stored as the coordinate signal ss (process 4tos).
Returning to the input 102 is performed to monitor that the touch detection signal ST is inputted first.

If it is determined in judgment 103 that the touch detection signal ST has been input, it is determined whether the coordinate signal ss is stored at that time or not. (106) When the result of judgment 106 is NO, the touch detection signal ST at that time is determined. Since the operation is inappropriate, the process returns to step 101.

When the result of judgment 106 is YES, the touch operation at that time is valid, so the content of the touch is determined using the coordinate signal SS stored at that time as the valid coordinate signal SSa (judgment 107).

When it is determined in judgment 107 that a device has been selected, the selected device is identified and memorized (step 108);
This completes the judgment process for - times of touch operations, so
Return to process 101.

When it is determined in judgment 107 that an operation key has been selected, a process 109) is performed to specify the operation of the operation key.

Process 110) to create operation information corresponding to the operation;
The operation information is output (process 111). Then, since the judgment process for - times of touch operations is completed, process 1
Return to 01.

In this way, in this embodiment, while the operator's finger is surely touching the display screen 20a of the display device 20,
Only when the touch detection signal ST is output from the touch detection means 21, the coordinate signal SC output from the touch coordinate detection means 22 is taken in as valid information.

Therefore, in a situation where the touch operation on the display screen 20a of the display device 20 is not reliably performed, such as when the operator interrupts the touch operation midway, the input coordinate signal SC will not be valid. Touch operations are disabled due to uncertain operations.

In the embodiment described above, it is determined that the touch operation is valid at the timing when the touch detection signal ST output from the touch detection means 21 rises; however, this determination is made when the touch detection signal ST rises. It can also be done at lower timing.

FIG. 7 shows a touch operation device according to another embodiment of the present invention. In addition, in this figure, the same parts as in FIG. 5 are given the same reference numerals.

In this embodiment, the coordinate signal SS from the coordinate input means 32 is
is temporarily stored in the coordinate information output unit 31c, and the contact determination unit 31
Only when the input of the touch detection signal ST is notified from b, the stored coordinate signal SS is converted into the effective coordinate signal SSa.
The effective coordinate signal SSa is output to the touch content determining section 33a of the operation information processing means 33.

Further, an example of processing at this time is shown in FIG.

In this case, it waits for the coordinate signal SC or touch detection signal ST to be input (input 201), and when either signal is input, it must be determined whether the signal is the coordinate signal SC or the touch detection signal ST. Judgment 202).

In the case of a coordinate signal, the process returns to process 201.

When it is determined in judgment 202 that the touch detection signal ST has been input, it is determined whether the coordinates of the coordinate signal SC are included in the valid operation area of the screen being displayed (Judgement 203), the result of judgment 203. When becomes YES,
The coordinate signal SC input at that time is the effective coordinate signal S.
As Sa, the content of the touch is determined (determination 204).

When it is determined in decision 204 that a device has been selected, the selected device is identified and memorized (process 205), and this completes the process for determining the - times of touch operations, so the process returns to process 201.

When it is determined in judgment 204 that an operation key has been selected, the operation of that operation key is specified (206), the operation information corresponding to that operation is created (207), and the operation information is output (processing). 208). Then, since the determination process for - times of touch operations is completed, the process returns to process 201.

By the way, in the above embodiment, the present invention is applied to touch operation si for operating plant equipment, but it can also be applied to other touch operation devices, such as touch operation devices for operating automatic operation switches and controller switches. The present invention can also be applied to.

In addition, in the above-mentioned embodiment, process data from the value plant is input from a single control device, but it is also possible to input process data from a process input device or process data using a multiplex transmission type process input system. The present invention can also be applied when inputting data.

[Effects of the Invention] As described above, according to the present invention, there is provided a touch detection means for detecting that the display screen has been touched, and a photoelectric coordinate input means attached immediately in front of the lower surface of the display for detecting the shaded coordinate position. and an operation coordinate input means that inputs the detected coordinate signal of the photoelectric coordinate input means as a valid operation signal when a touch detection signal is output from the touch detection means, so the photoelectric coordinate input means does not require mechanical movement. Since the touch position coordinates are detected by the input means, the reliability of the device is high, and the touch position coordinates are input as a valid operation signal on the condition that the display screen is detected to have been touched. Therefore, it is possible to realize a touch operation with a feeling of actual operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of the present invention, FIG. 2 is a schematic diagram showing an example of the configuration of a touch detection device, FIG. 3 is a schematic diagram showing an example of a plant monitoring screen, and FIG. 4 is a schematic diagram of a computer. FIG. 5 is a block diagram showing the configuration of a touch operation device according to an embodiment of the present invention; FIG.
The figure is a flowchart showing an example of the processing of the apparatus in Figure 5.
The figure is a block diagram showing a touch operation device according to another embodiment of the present invention, FIG. 8 is a flowchart showing a processing example of the device in FIG. 7, and FIGS. 9(a) and (b) are conductive capacitive contact type. a schematic diagram illustrating touch position coordinate detection means;
10(a) and 10(b) are schematic diagrams illustrating a capacitive contact type touch position coordinate detection means, and FIGS. 10(a) and 10(b) are schematic diagrams illustrating an optical type touch position coordinate detection means. figure,
FIG. 12 is a schematic diagram for explaining the disadvantages of a conductive film contact type touch position coordinate detection means, and FIGS. 13 and 14 are schematic diagrams illustrating a photoelectric type touch position coordinate detection means. 20... Display device, 21... Touch detection means, 22
... touch position detection device, 30 ... contact detection means,
31... Operation input processing means, 31a... Coordinate information storage section, 31b... Contact determination section, 31c... Coordinate information output section, 32... Coordinate input means, 33... Operation information processing Means, 33a...Touch content determination unit, 33b...
- Operation target identification section, 33c... operation output command creation section. (7317) Agent Patent Attorney Noriyuki Chika (8
869) Kenji of the same Daikomaru Figure 1 Figure 2 Figure 3 Figure Figure (a) (b) Figure Figure Figure Figure Figure Figure Figure

Claims (1)

[Claims] In a touch operation device in which a touch input device is attached to a screen of a display device and an input operation is determined based on touch coordinates of the touch input device, a touch detection means for detecting that the display screen is touched; A photoelectric coordinate input means that is attached immediately before and detects a shaded coordinate position, and a detected coordinate signal of the photoelectric coordinate input means when the touch detection means is outputting the touch detection means is input as a valid operation signal. A touch operation device comprising an operation coordinate input means.