JPH07122808B2 - Operation switch erroneous operation prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention remotely controls a large number of devices provided in a large-scale plant such as a power plant or a chemical plant. The present invention relates to a device for preventing erroneous operation of the operation switch.

[Prior art]

In power plants, the number of operating ends has become enormous due to the increase in capacity (power output) and the progress of automation. Along with this, the number of operation switches for operating these operation ends has increased, and the size of the operation panel in the central operation room in which the operation switches are installed has become very large.

The second example of the control panel in the central control room of a recent power plant
Shown in the figure. Reference numeral 21 is an "operation panel for performing operation of each operation end relating to a boiler, a turbine, and a generator" (hereinafter, abbreviated as "BTG panel"), which is an indicator / recorder 22 for indicating / recording values of various processes, a plant It is composed of an alarm device 24 for calling attention to the operator 23 in the event of an abnormality and an operation switch 25 for performing an operation of each operation end (hereinafter also abbreviated as "manual operation").

For the operator who operates the power plant, it is necessary to operate these many operation switches to start / stop / maintain the operation of the power plant.
The mental fatigue becomes large, and in some cases, an erroneous operation (for example, one pump is stopped but another pump is mistakenly stopped) causes the entire power plant to stop, resulting in power generation. There is a risk that the mission of the plant may not be fulfilled. For this reason, the computer system was introduced for full automation, and as shown in Fig. 2, an automation board 26 linked with the computer full automation system was installed to enable one-man control from here, and the BT
It has become possible to operate the power plant without going to G-board 21 and performing manual operation, which reduces the burden on the operator.

However, even in such a fully automated plant, the BTG panel 2
The operation of each operation end in 1 becomes necessary in the following cases.

(1) Complementary operation when the automatic control system including a computer fails (when full automation becomes impossible) (2) Operation end operation that requires human judgment (3) After trial operation or periodic inspection When it is necessary to operate while confirming the operation of each individual operating end without using an automatic control system including a computer like in the case of plant startup in (4) When an emergency human response is required due to a plant abnormality In such a case, the burden on the operator who is not accustomed to the full automation becomes very large, and the risk of the above-mentioned erroneous operation is high.

A method in which one operation switch is used to operate the operation end by using a combination of switching and selecting operations for multiple operation ends so that concentrated operations can be performed within the reach of the operation panel without moving in front of a control panel with a width of several meters. It has been taken. There are various types of this method,
As the latest technology, CRT (CRT display) is used to select the target operation end from the multiple operation ends displayed on the screen with a light pen, finger touch, keyboard, etc. There is a method of operating an operation end selected by a commonly provided operation switch (hereinafter, this method is referred to as a CRT operation). This reduces the width of the panel and reduces the operator's movement range, which reduces the operator's physical burden, but the degree of error in selection when selecting the desired operating end from multiple operating ends. The risk of misoperation still remains.

On the other hand, as a conventional technique, there is a voice notification device, and for example, when a certain operation end (for example, A pump) is activated by an operation switch, the result (A pump activation) is input to the device so that “A pump It has been implemented to output a voice such as "started up" (from the speaker 27 in Fig. 2) to notify a plurality of operators of the operation result at the same time.

In addition, in the fully automated system, the operation timing of each operation end is programmed in the computer, and when the time comes, the operation end is automatically operated. We will give you a notice.

Related to this type of equipment, thermal power generation by the Thermal Power Nuclear Power Technology Association Vol.36, N
o.1 "700 MW coal-fired power plant integrated digital control system" is mentioned.

[Problems to be solved by the invention]

The above-mentioned conventional technology is mainly intended to reduce the labor of the operator, and due consideration is not given to the risk of erroneous operation.Although the operation result is reported even by the voice notification device, the `` result It's just a report. In addition, even when the advance notice of the operation is given according to the operation timing programmed in the computer, the advance notice means cannot be applied when the manual operation is performed (as described in the section of the prior art) (human intention). Calculator cannot tell you what you are trying to operate with). As described above, each of the above-described conventional devices has a problem in that it cannot give a warning for preventing an erroneous operation in the manual operation of the operator.
FIG. 3 shows the role of the computer and the human behavior pattern in the case of the automatic operation by the computer and the case of the manual operation by the operator. Reference numeral 31 in the figure is a timer for performing automatic operation after the warning voice time limit.

The present invention has been made in view of the above circumstances, and is intended to be achieved by appealing to the hearing of the operator to prevent the operator from performing an erroneous operation.

The principle of the present invention created in order to achieve the above-mentioned object is to detect this before actually operating the operation switch of the operation end that the operator is going to operate, and input it to the voice notification device. The A pump will be started from now. Are you sure? ”, Etc., to effectively prevent accidental operation by giving advance notice.

Based on the above principle, as a specific configuration for applying this in practice, the operation error prevention device of the present invention is a computer system for automatically controlling plant operation, and when automatic control by the computer system is inappropriate. In the operation switch erroneous operation prevention device of the plant operating device, which includes an operation panel provided with operation switches corresponding to operation devices that give operation commands to the plant constituent devices, a preparatory operation performed when the operation switches are manually operated by the operation switches. And a notification means for outputting a control content of the operation switch by voice when the preparation operation is detected so that one of the operation switches is operated. is there.

[Action]

 The outline of the operation in the above configuration will be described below.

Operation switches are roughly classified into a "twisting switch" in which a handle is gripped and twisted to operate, and a "push button switch" in which a handle is pressed to operate. In the case of the former twisting switch, the operator's grip of the steering wheel is detected by a detection push button or the like installed on the handle grip part (which operation end is grasped by the operation switch). It is possible to prevent an erroneous operation by giving a voice notification in advance that the operation end is about to be operated by inputting it to the voice notification device, thereby giving a warning to operate the wrong operation end. it can. Also, with the latter "push button switch", it may be possible to detect that the finger has touched the button, but considering the practical situation, it will be pressed and operated at the moment of touch, and a voice notification will be given. Because there is no time to warn
It may be configured to detect that the "guard cover", which is installed specifically for the push button switch, is opened. This "guard cover" is generally installed so that humans do not accidentally press a button when they accidentally put their hands on the operation panel. (For example, a detection switch) to detect and input to the voice notification device, the "twisting switch" described above.
As in the case of (1), the erroneous operation is prevented in advance by making the voice notification.

In the case of the CRT operation, if the voice notification device is made to input which operation end is selected at the time when the operation end is selected, erroneous operation can be prevented in advance in the same manner as described above.

〔Example〕

Next, one embodiment of the present invention will be described with reference to FIG. 1 and FIGS. 4 to 6.

In FIG. 1, 11 is a twisting switch at a certain operating end (here, it is assumed to be a B pump), and a steering wheel 12 is attached to an operator 23.
You can start and stop the B pump by gripping and twisting. Reference numeral 13 is a detection button as a sensor for detecting that the handle 12 of the B pump is grasped, 14 is a voice notification device, and 27 is a speaker for emitting a voice. In the figure, at the moment when the operator 23 grasps the steering wheel 12 with the intention of starting the B pump, the detection button 13 detects this and a detection signal is input to the voice notification device 14. In response to this, the voice notifying device 14 selects and processes a corresponding voice (for example, "B pump operation starts. Are you sure?") And outputs the voice from the speaker 27 to alert the operator. If the operator was originally trying to activate A-fan, the operation was interrupted by this voice message "Start B-pump operation. Are you sure?" And correct operation (search for A-fan operation switch and Operation).

According to the present embodiment, when the operator twists the twisting switch of the operating end, the name of the operating end is output as a notice voice and a confirmation element is given to the operating member to prevent erroneous operation.

FIG. 4 shows a push button switch equipped with a guard cover 43.
In the embodiment using 42, the same figure (A) is a perspective view with the gart cover 43 closed, the same figure (B) is a perspective view with the same open state, and the same figure (C) is the same. It is a side view of a closed state, and the same figure (D) is the figure which added the flowchart to the side view of the same opened state.

41 is the guard cover 43 of the push button switch 42 of B pump 43
Is a detector as a sensor for detecting that the is opened, and 14 and 27 are a voice notification device and a speaker, respectively, as in FIG. In the figure, at the moment when the operator 23 opens the guard cover 43 with the intention of activating the B pump, the detector 41 detects this and the detection signal is input to the voice notification device 14. In response to this, the voice notifying device 14 selects and processes the corresponding voice (for example, "B pump starts starting. Are you sure?") And outputs the voice from the speaker 27.
Call attention to the operator. The operation for erroneous operation is the same as in FIG.

According to the present embodiment, before the push button of the operating end intended by the operator is pressed, the name of the operating end is output as a preliminary announcement voice (at the time when the guard cover is opened), and a confirmation element is given to the operator to make a mistaken operation. It can be prevented.

Fig. 5 shows the target operation end from among multiple operation ends.
7 shows an embodiment in which after the selection switch installed on the panel 21 is selected, the operation switches common to the plurality of operation ends are operated to start and stop the operation ends. First, the operator 23 searches for the B pump 51 in the system diagram simulating the system of the plant in an attempt to activate the B pump 51, and presses the selection switch 52 installed near the picture of the pump to operate the operation switch 53. The operation switch peculiar to the B pump 51 may be possible (a logic is built so that only the B pump 51 can be started and stopped even if operated), and the B pump 51 is started by operating this. In this method, the advance notice voice notification method is the selection switch 52 of the B pump 51 described above.
It is performed by detecting that the button was pressed.

The signal of pressing the selection switch 52 of the B pump 51 is input to the voice notifying device 14, and the voice notifying device 14 receives and processes the corresponding voice and outputs a notice voice from the speaker 27 to alert the operator. Evoke.

If the operator originally intends to start another pump 54, the operation by the operation switch 53 is interrupted by the warning voice, and the selection switch 55 installed near the pump 54 is interrupted.
Reselect and perform the original operation. In this case as well, it goes without saying that the advance notice sound is output when the selection switch is selected.

According to the present embodiment, a warning voice is output at the time when a selection for operating the operating end is made by the operator's will, and a caution about an error in selecting the operating end and a sense of security for making a correct selection are given. You can

FIG. 6 is a view showing an embodiment of the present invention by the CRT operation board 61.

In the figure, the CRT operation panel is provided with a CRT (CRT display) 62 for selecting an operating end to be operated, a selection switch 63 for performing screen selection and operating end selection, and an actual operation after selection. It comprises an operation switch 64 and a speaker 27 for voice announcement. First, the system selection menu 65 is displayed on the CRT screen. This is because it is impossible to display a complicated system of the power plant on one screen, and therefore system is divided. The operator presses the selection switch 63 to select the system to which the operating terminal to be operated belongs (here, "system A"). This operation changes the screen to the system diagram 66 of system A. Further, the operation end B pump (numbered here) to be operated is selected from the system diagram 66 by the selection switch 63, and the operation switch 64 is pressed to perform the actual operation. The notification method is carried out by detecting the pressing of the selection switch 63 for selecting the operating end.The moment when the B pump is selected (the moment when the selection switch 63 is pressed) This signal is input to the voice notification device 14. The voice notification process is as described above.
If the operator originally intends to operate another pump (for example), he / she recognizes this by the advance notice sound notification, and after correct reselection (selection) according to the system diagram 66 of the A system, the operation is performed. carry out. In this case as well, it is possible to determine whether or not the correct reselection has been made by outputting the notice sound.

According to the present embodiment, a warning voice is output at the time when a selection for operating the operating end is made in cooperation with the CRT screen by the operator's intention, and a caution against an error in selecting the operating end and correct selection are performed. Can give you a sense of security.

〔The invention's effect〕

According to the present invention, by notifying the operator of the operation end to be operated by voice to notify the operator's hearing, it is possible to prevent erroneous operation and avoid troubles such as unnecessary plant stop. It has an excellent practical effect of being able to.

[Brief description of drawings]

FIG. 1 is an explanatory view of one embodiment of the present invention, and FIG. 2 is an explanatory view of an embodiment different from the above. FIG. 3 is a system diagram showing the role of the computer and the human action pattern in the case of automatic operation / manual operation. 4 to 6 are explanatory views of embodiments different from the above. 11 …… Twisting switch, 13 …… Grip detection button, 14 …… Voice notification device, 23 …… Operator, …… 27 …… Speaker, 41…
… Guard cover detection switch, 42 …… Push button switch, 62 …… CRT.

Claims (1)

[Claims] 1. A plant comprising a computer system for automatically controlling plant operation, and an operation panel provided with operation switches corresponding to operation devices for giving operation commands to plant constituent devices when automatic control by the computer system is inappropriate. In the operation switch erroneous operation prevention device of a driving device, a preparatory operation detection unit that detects a preparatory operation performed when manually operating the operation switch for each of the operation switches, and the preparatory operation so that any operation switch is operated. An erroneous operation prevention device for an operation switch, comprising: a voice notification unit that outputs the control content of the operation switch by voice when detected.