JPS61182143A - Automatic information selecting and supplying device - Google Patents

Abstract

PURPOSE:To enable the machine side to select and supply appropriate information in response to the state of the man side that receives the information, by detecting and discriminating the state of an operator and selecting the information to be supplied based on the result of said discrimination. CONSTITUTION:The state of an atomic power plant is converted into electric signals by a detector and supplied to a central processor 31 via a process input device 41. A data processing part 314 monitors an alarm and produces an operating guide for other operators. While the signals given from an electroencephalograph, a tonometer and a pulsimeter serving as the state detectors for operators are supplied to the processor 31 via a process input device 25 and processed by a process input processing part 311. Then an operator state deciding part 316 decides the present operating state of the operator. A supplied information selecting part 317 processes the CRT display information delivered to a CRT controller 43 in response to the consciousness level of the operator obtained from the part 316 and delivers the information of an appropriate form.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an information providing device, and particularly to an information providing device that automatically selects and provides optimal information in response to the condition of a person observing the information. Regarding equipment.

[Background of the invention]

In a man-machine system, CR1 display devices, printing devices such as typewriters, and lamps are used as a means of providing information from mechanical systems to humans.

Other visual devices, annunciators, voice announcement devices,
There are other devices that transmit information to the sensory organs such as hearing devices. Regarding these devices, for example, control computer applications are featured in Hitachi Hyoron 1982 (Vot, 64) No. 6 P1 to P72, in which various computer systems are introduced. If these systems are viewed as man-machine systems, the selection of information to be displayed is only done when the plant status changes or when human operations are performed on the mechanical system based on the operator's will. .

As an example of research that analyzes and evaluates human errors by operators, there is an article in the magazine "Measurement and Control" Vol. As pointed out in this book, human brain waves appear as unique patterns corresponding to the state of brain activity, as shown in Figure 1. It is said that if the thickness of the error potential or the level of brain activity (also called the level of consciousness) is divided into stages, the result will be as shown in Table 1.

Phase 0 is out of the question because it is when the person is unconscious. In Phase I, although the patient is awake, the patient is largely unconscious and inattentive, so the potential for VC errors is extremely high. Phases ■ and ■ are both normal states of consciousness, but phase ■ corresponds to the body-breathing phase, where the person is often absent-minded with thoughts. Because attention doesn't work in a positive way, it's easy to get depressed. On the other hand, phase ■ is an active phase in which the brain is moderately activated, consciousness is active, active behavior is developed, and there are almost no mistakes made by being distracted. However, the frontal lobe gets tired easily and does not get overly excited, so the old brain eventually returns to phase ■ via the brake system. Therefore, even during working hours, most of the time is spent in the ■ body and breath phase, and most of the routine work that we are accustomed to is processed in the ■ phase, so it is important to design man-machine systems so that even at the beginning of the phase ■, we can distinguish between them. This is the basic idea of ergonomics.

In Phase ■, the energy level of the cerebrum is too high due to excessive tension and information excitement, and as a result of "blood rushing to the head", attention is fixed on one point at hand, unable to switch judgments, and errors are most likely to occur. Easy to put on.

When you are panicked or fearful in an emergency situation, your brain goes into a state of panic.

The accident that occurred at the Three Mile Island nuclear power plant in the United States in March 1971 (hereinafter referred to as the TMI accident) also occurred 1.
Minutes later, more than 100 alarms were ringing, and the operator stated that he wanted to throw away the panel monitoring so he could figure out where the cause was. In terms of error potential, the author of the above-mentioned article believes that people initially experience an accident in Phase ■, but quickly become caught up in an abnormal state of confusion, and are forced into Phase ■, where they concentrate on one point, without having time to recover to normal consciousness. There is. This was one of the important factors that made the TMI accident so big.Although there were some correct instrument indications nearby, the ability to make an integrated judgment and determine the true cause of the accident had already been lost. The author believes that this was compounded by the incorrect readings on the instruments, further increasing the confusion for the operators.

According to the prior art, the above-mentioned level of consciousness of the operator is not monitored, and the mechanical system provides information based on external information and operation instructions from the operator. However, even for the same operator, the appropriate form of providing information changes depending on the condition (level of consciousness, etc.), so there is a drawback that information cannot necessarily be provided in the optimal form.

[Purpose of the invention]

An object of the present invention is to provide a man-machine system in which the machine side selects appropriate information according to the human condition, without the need for the person receiving information to actively select the information presented. An object of the present invention is to provide an information automatic selection and provision device for providing information.

[Summary of the invention]

An outline of the present invention will be explained using FIG. 1. FIG. 1 is a conceptual diagram of the present invention. The state of the operator 1 is input to the information processing section 3 by the operator state detector 2. Information inputted from the external information input device 4 regarding the monitoring and control target 6 of the plant, etc. is inputted manually from the operator status detector 2 to the operator 1.
The information processing unit 3 processes and selects the optimum form according to the state of the information, and the information providing device 5 presents the information to the operator 1.

As mentioned above, in the present invention, there is information that should be processed and provided to the operator based on the input data from the monitored and controlled object, and the form or range of provision of this information can be changed in accordance with the operator's condition. It is something that will continue. Therefore, there are devices that simply detect when an operator falls asleep and sound a buzzer, and devices that provide information on the operator's condition itself (for example, a hospital's ICU: Intensive (:ar
e (Jnit) is a completely different concept.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIG. In this embodiment, the present invention is applied to a system for monitoring the operating status of a nuclear power plant 61. The state of the nuclear power plant 61 is converted into an electrical signal by a detector 62 that detects various temperatures, pressures, flow rates, etc., and is input to the central processing unit 31 via the process input device 41. The operator 1 operates the operation switches, adjustment devices, etc. attached to the operation panel 63 based on the information displayed on the C-T display device 51 and the information from the indicators, recorders, lamps, etc. displayed on the operation operation '@63. Operate Yoshi Nuclear Power Generation Bra/Toro 1.

The operation monitoring control process by the computer is described in the cited document (Hitachi Review P17-21).

In this embodiment, an electroencephalogram 21. Sphygmomanometer 23. A pulse meter 24 is installed, and a waveform analyzer 22 is added to obtain the frequency components and oscillations of brain waves. Signals from them are input to the central processing unit fi31 via the process input device 25. Conventionally, a keyboard 42 has been used as a device for inputting information into a computer system by the operator 1, but since the operator 1 actively takes action and selects display information of his own will, this is the keyboard 42 used by the operator 1 of the present invention. Does not apply to condition detector 2,
This is one form of the external information input device 4.

The waveform analyzer 22 receives the output from the electroencephalograph 21, and
This is to perform frequency analysis of the waveform shown in Figure 5. Here, waveform sampling is performed at a period of 2 msec at 7t1.
Fast Fourier transform processing is performed based on 0.024 pieces of data.
Executed every second. As a result, a power distribution diagram as shown in FIG. 3 is obtained, and the frequency of the peak having the maximum amplitude is Ft.

The intensity is AI, and similarly the frequency of the peak having the second intensity is F2. Output the intensity as A2.

The above various information is processed within the central processing unit 31. Its configuration is shown in FIG. Data from the operator 1 and the nuclear power plant 61 that are input via the process input devices 25 and 41 are processed by the process input processing unit in the central processing unit 31, and the data is input into the operator database 31.
5 and stored in the plant database 313. As shown in FIG. 5, the details of the operator database 315 include pulse rate (PC), blood pressure (BP), and the aforementioned brain wave frequency (FI), (Fll), brain wave amplitude (At),
(A2), and an operator state data set consisting of hypothetical values that have been observed and stored in advance in each of the states of phases O to ■ shown in Table 1 of the operator. The processing of the operator state determination unit 316 will be described below.

F+=nibi(PCP C+) 2+K z・(BP
BPt)"10Ks・(Fz Fth) 2+ to 4・(A
t AI)2+ K s・(F2 F2+)” +
Ka.(A2 Az+)2 where i is O to 4 and corresponds to the phase in Table 1.

FI is the degree of agreement with each mode of the observation state, PCI etc. is the pre-stored operator data set for each phase, 1 to 6.
is the weighting factor.

Then, I defined by F+=MIN (Fo, F+, Fz, F3.F4) is determined to be the current operating state of the operator. This becomes the output of the operator state determination section 316.

In the partial data processing unit 314, the plant database 3
13, calculate plant state quantities that are not directly observed, and create operation guides for alarm monitoring and other operations for operators. In addition, in the case of occurrence of plant abnormality, arithmetic processing such as the cause of the abnormality is also carried out.

The provided information selection unit 317 switches the presented information depending on the phase of the consciousness level of the operator 1. That is, the operator 1 should originally be in the state of phase ■ or ■. That is, during normal operation, it is in the state of 7A's H, and in the operation phase accompanied by the occurrence of an abnormality or the stress of the start/stop process, it is in the state of phase (2). However, if the operator begins to sleep due to fatigue or monotony, a Phase I condition occurs;
When the body further reaches sleep, it enters a phase O state. Therefore, when a new alarm message occurs in the state of Phase I, not only does the normal chime-type annunciator sound, but also the control output section 318. A loud bell 65 is rung via the process output device 53. Furthermore, phase 0
When the condition is reached, in addition to ringing the bell 65 unconditionally, a buzzer in a separate room where a person is stationed also rings. This is because in Phase O, there is a possibility that the operator may have suffered a brain attack or the like. In addition, in Phases O and I, in order to prevent erroneous operations under vague consciousness, operations from the operation panel 63 that are not in the safe direction are sent to the nuclear power plant 61 via the control device 64. Avoid outputting incorrect output. Specifically, operations in the direction of safety refer to operations such as starting various water injection systems when the reactor water level is low (or very low), and operations that are not in the direction of safety include operations such as stopping the water injection system in operation. say.

On the other hand, when phase (2) occurs, it is possible that the operator 1 may make an erroneous operation due to panic and confusion, and therefore, as described above, part of the operation of the operation panel 63 is blocked.

A specific block processing method is shown below. FIG. 6 is a flowchart of the control output section 318. Corresponding to the consciousness level of the operator 1 obtained by the operator state determining unit 316, an ON state is output to the process output device 53 when the operation is permitted, and an OFF state is output when the operation is prohibited.

This command causes the digital output circuit 531 shown in FIG.
is in the on or off state. When the RCIC (Isolation Cooling System) stop switch 65 to be blocked is operated, even if the output signal 657 of the relay 655 is output from the operation panel 65, the receiving relay 65 in the control unit [64
43 becomes inactive and can block commands to the CIC control 644. Note that even in the command to the RCIC control unit 644, block processing is not performed for the startup operation. Table 2 shows the operation systems and operations that are not subject to blocking.

Table 2 Operation systems and operations not subject to blocking On the other hand, C
The CRT display information output to the RT control device 43 is processed by the provided information section 317. In other words, in phase ■, which occupies the longest time for operators, the conventional display format is used as a pace, but if a change in plant status occurs, the operator is strongly advised of the change, and phase ■ is changed as necessary. In order to shift to the state shown in FIG.

In the case of phase ■, the operator's attention has been fully aroused, so in order to increase visibility (easiness of seeing), refrain from blinking or changing colors as much as possible. In the case of phase ■,
Avoid advanced content and complex expressions, and keep the content simple. Phase 0. In the case of ■', there is little meaning in displaying it as it is, so the purpose is to link all the screens at once, without displaying the contents, and to shift to operation A all phases ■ or ■.

These specific processing methods are shown below. FIG. 8 is a flowchart of the provided information selection unit 317. Operation status of nuclear power plant 61, CR by request from keyboard 42
As shown in FIG. 9, the screens to be displayed by T are limited to three screens as a group of display screens. In addition, the numbers in the frame are CR
Indicates the T screen number. Next, one of them is designated according to the operator's level of consciousness. Further, if the operator's consciousness level is H, a newly generated message will be linked, but if the level is ■, it will not be linked. The color change designation of the next display message is also divided into phases ■ and ■.

The screen displayed after the scram will be explained using the 081 screen shown in FIG. 10 as an example. A is a screen that is displayed when the operator is in phase O or I, and simply indicates that a scram has occurred, and the reactor water level and reactor pressure, which are particularly important among plant monitoring parameters. All of these flicker, arousing the operator's discretion.

B is a screen that is displayed in the case of phase ■ or ■, and it guides the operator on what to check and what to operate, and also displays the dry well pressure and temperature, which are the next most important plant parameters mentioned above. Also displayed. Same B
In the screen shown in FIG. 2, the newly generated guide message and the plant parameters in the alarm area are pulled in phase (2), but no message is generated in phase (2). Further, in phase (2), the confirmation instruction guide is displayed in yellow and the operation instruction guide is displayed in red, but in phase (2), the guide is displayed in green. Messages that are no longer needed are deleted. Note that in the plant status section, things in the alarm area are displayed in red, and things in the alarm area are displayed in green, regardless of whether the phase is ■ or ■. C is for phase ①, which displays only the guides that the operator should operate, and prevents the operator from concentrating on one point.

FIG. 11 shows the configuration of a second embodiment of the present invention.

The state of the plant 61 is input by the detector 62 to the central processing unit 31 via the process input device 41 . The processing results are sent to the CRT controller 52. , 54, the CRT display device ff151 is incorporated into the operator console 55.
, 53. In front of these devices, as shown in FIG. 12, an operator's chair 26 is placed. As shown in Fig. 13, there is a seating detection limit switch 2.
64 is installed, and when operator 1 is seated, springs 262, 2
The seat cover 261 supported by the seat cover 63 is pushed down, and the seating detection limit switch 264 is activated.

This signal is input to the central processing unit 31 via the process input device 25. Based on this result, CRT51.53
Double or half the size of the characters displayed in the .

In the case of the alarm display screen, as shown in FIG. 15, while the user is seated, detailed information including the time of alarm occurrence, limit value, and current value is also provided in small letters. On the other hand, when you are away from your seat, this detailed information will not be displayed, but the alert will be displayed in large letters so that you can easily understand the alert even from a distance.

According to this embodiment, detailed plant information can be obtained manually while the operator is seated, and when the operator is away from the seat, it is possible to ascertain generated alarms even from a distance by displaying them in large letters.

〔Effect of the invention〕

According to the present invention, it is possible to obtain an information automatic selection and provision device that provides information in an appropriate format according to the operator's condition, so that the potential for human error by the operator is reduced, and the fatigue of the operator is reduced. This has the effect of reducing

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram of the present invention, Fig. 2 is a diagram showing the configuration of the first embodiment, Fig. 3 is an operator's brain wave power distribution diagram, Fig. 4 is a software configuration diagram, Fig. 5 is a diagram showing the configuration of the first embodiment, Fig. 6 is a flowchart of the control output section, Fig. 7 is a block circuit diagram of the operation control panel, Fig. 8 is a flowchart of the provided information selection section, and Fig. 9 is a flowchart of the control output section.
The figure shows CRT display screen selection data, Figure 10 shows a group of display screens during scram, Figure 11 shows the configuration of the second embodiment, and Figure 12 shows the configuration of the man-machine interface. 13 is a diagram showing the configuration of the operator's chair, FIG. 14 is a diagram showing the a-information display format, and FIG.
The figure shows brain wave patterns and states of consciousness. 1... Operator, 2... Operator status detector, 3...
Information processing unit, 4... External information input device, 5... Information providing device, 6... Monitoring and control object, 21... Electroencephalogram meter,
22...Waveform analyzer, 23...Sphygmomanometer, 24...
Pulse monitor, 25... Process input device, 31... Central processing unit, 32... Magnetic desk, 33... Card reader, 34... Line printer, 41... Process input device, 42... ...Keyboard, 51...CRT display device, 52...CRT control device, 53...Process output device, 61...Nuclear power plant, 62...
- Detector, 63... Operation panel, 64... Control device, 65... Bell.

Claims (1)

[Scope of Claims] 1. In an information processing/providing device that takes in and arithmetic-processes a signal indicating a state quantity of a plant to control the plant and provides it to an operator as monitoring information, detection for detecting the state of an operating operator. an operator condition determination unit that determines the operator's condition from the detection signal, and an information processing/providing device that changes the arithmetic processing procedure based on the determination result and selects the information to be provided according to the operator's condition. An information automatic selection and provision device comprising: an information selection unit that selects information to be provided. 2. The automatic information selection and provision device according to claim 1, wherein the signal representing the condition of the operator is a signal related to the driver's level of consciousness. 3. The automatic information selection and provision device according to claim 1, wherein the signal indicating the state of the operator is a signal indicating whether the operator is seated in the operator's chair.