JPH01230343A - Device for controlling equipment - Google Patents

Abstract

PURPOSE:To improve accuracy in judging the condition of an operator by providing not only a means judging the condition of the operator based on both information obtained by a brain information analysis means and the specific data of the operator stored by a memory means but also a means providing warning actuation to the operator depending on the condition decided on the part of the operator. CONSTITUTION:An operator 26 puts a brain magnetism detecting device 3 in a cap form on his head. The input terminal of a brain information analyser 14 is connected with a receiver 12, and the output terminal of the analyser 14 is connected with a judging equipment 15. The output terminal of the judging equipment 15 is also connected with a notice selector 20 and an actuating gate 26 other than a recorder 18 and an indicator 19. When the judging equipment 15 outputs signal indicating 'abnormal condition', for example, signals corresponding to a phase 'zero' or '1', the notice selector 20 outputs voice notice signals to a speaker 22 first, and also outputs drive signals to a lever 23 striking the operator when no action is taken by the operator 26, and furthermore outputs drive signals to an oscillator 24 when no specific corresponding actuation is still taken yet.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to an equipment control device, and is particularly suitable for application to plans 1 to 3, which are large-scale and require relatively advanced judgment from operators, such as nuclear power plants. [Prior Art] As described in Japanese Unexamined Patent Application Publication No. 11886/1986, the conventional system measures electroencephalograms (potential differences associated with neural activity in the brain) on the electroencephalogram side. However, there is a method that detects abnormal waves from the waveform of the measurement signal and automatically displays and records them.Another example is a method that detects abnormal waves from the waveform of the measurement signal and automatically displays and records them. α wave (amplitude 5
0 p, V, frequency 10 Hz (wave after Mjj) 2, when this is detected, it is determined that the operator is alert, and an alarm is issued to the operator.J, i: As long as the prevention device is activated. be. [Invention or Problem to be Solved] Juki Conventional Techniques tli Ding+:j, Is it possible to limit signals from the brain to brain waves, or measure minute changes in the magnetic force (brain magnetism) emitted from the brain in addition to Ifii waves? However, it has become possible to understand the activity status of local parts of the brain without contact, rather than as macroscopic information about the entire brain. Furthermore, the conventional example described in Japanese Patent Application Laid-Open No. 4811886 is aimed at automating judgment and recording from the viewpoint of medical care, and the obtained information is directly provided as a feedback to the subject. It is not intended to be administered, but for the doctor to see the results. On the other hand, in the conventional example described in Japanese Unexamined Patent Publication No. 55-86443, a warning is issued when an operator is distracted, and the system also targets abnormal excitement and driving, which is the exact opposite of obsessive behavior. . No measures were taken to detect abnormal conditions (overstress) of operators. Furthermore, JP-A-61-18214
Publication No. 3 classifies and evaluates the operator's condition into several types based on brain wave information. However, the characteristics (personality) of the individual operator greatly influence the judgment. It is a uniform system that does not collect daily data on the characteristics of operators during normal or abnormal times. Furthermore, all of these conventional techniques replace signals in the form of brain waves to obtain information from the brain. The academic definition of brain waves (Science Dictionary, 3rd edition) is the potential difference between the scalp and the brain. Today, it is extremely difficult to measure potential differences on the scalp without contact. Therefore, it is unavoidable to bring the electrode into contact with the scalp for more than the time required to measure brain waves. The first object of the present invention is to provide an equipment control device that can reduce the accuracy of the operator's condition judgment. brain magnetism detection means for determining the brain magnetism of the operator; brain information analysis means for obtaining information regarding the brain activity status of the operator based on signals obtained by the brain magnetism detection means; It is determined that there is a means for storing personal characteristic data, and a means for determining the condition of the operator based on the information obtained by the brain information analysis means and the characteristic data of the operator stored in the storage means. This is achieved by providing a means for issuing a warning to the operator depending on the operator's condition. [Effect] The operator's condition is determined based on the information on the operator's brain activity obtained from brain magnetism using the brain information analysis means and the characteristic data regarding the operator stored in the memory means. The state of the operator, ie, whether the operator is normal or abnormal, can be accurately grasped. Therefore, it is possible to more appropriately warn the operator. [Example] The present invention has been made based on the study results shown above. The contents will be explained below. There are various types of brain sensors. It is a so-called electroencephalograph that measures the electrical potential difference in the head cortex. Brain waves are generated when hundreds to thousands of neurons in the brain (~10 billion or more information processing cells in the brain) synchronize and cause fluctuations in the total electrical potential, and they spread throughout the brain. form a pattern. EEG is a relatively slow electromagnetic wave that spreads through the brain tissue, and the lateral angle θ is measured using electrodes implanted in the brain or skin electrodes placed on the scalp. Brain waves are I I-I z
It is a continuous wave of ~ several k H7. In particular, l Or (waves near Z are called α waves, 17 to 30 Hz are called β waves, 4 to 8 Hz are θ waves, and 1 to 4 -1) are called δ waves (Eric Fie Lehrna 12). Why Can 1 ~ Computer Be More Like Plain: High Technology ] 9984b 4-41 (Er] c,, l, Lerner: Why
can't computer l)cmore 1
ike brain: Old gh Technology
1984. Aug. p34-41)). During mental activity, alpha waves are suppressed and beta waves become dominant. When at rest, alpha waves predominate, at shallower stages the waves gradually decrease and theta waves appear, and at deeper depths, it becomes delta waves. In pathological cases (e.g., epilepsy), abnormal brain fluid with large amplitudes is exhibited (Dictionary of Physical and Chemical Sciences, 3rd edition). -Visually, brain waves reflect brain activity. They also react to differences between what they expected and what actually happened (experiments have confirmed cases such as when a sentence ended with an unexpected m-word). Any type of event that causes surprise is a brain wave pattern that triggers a specific response (Nosui Technology)
August 1984 p34-4]). 1t difference in scalp rank
The electroencephalograph, which is a type of electroencephalogram, basically involves contact with the scalp, and it is a comprehensive information that is expressed on the scalp, but does not reveal the internal state. On the other hand, with recent advances in superconducting devices, biomagnetic detection using superconducting interferometers (SQtMD and No. 1118) has become relatively simple and compact. (Development of high-sensitivity SQUID System 11: Elek 1 Heronics Magazine, VOQ, 32, No.
6, No. 394, June 1, 1986). This detects the brain's magnetism by capturing the weak magnetism generated within the brain using a ring-shaped superconducting coil and increasing the detection sensitivity by tens of thousands of times. With Jl-contact, local information inside the brain can be measured with high resolution and precision. It will also be possible to create a magnetoencephalogram that shows the distribution and changes in the brain's magnetic field. especially,
With the advent of stable room-temperature superelectric motors, it is now possible to learn the state of the brain in an extremely compact and non-contact manner by measuring brain magnetism generated from inside the brain. That is, a frequency analysis of the brain's electromagnetic field is performed, and α, β, 0. The state of the brain is understood from the shape of the distribution of the intensity of frequency components corresponding to γ waves and the state of change thereof. For example, if alpha waves become strong and later theta waves become strong, it is possible that you have entered a sleep state.・1 (1 is high. When abnormally high beta waves are observed, you may be in a state of abnormal excitement or agitation. In addition, extreme anxiety, fear, anger, etc. can be easily identified by extracting the features of these waveforms2. By measuring magnetism, it becomes possible to understand in detail the activity status of each part of the brain, and to correlate it with a person's emotional and psychological state. Information on a person's psychological, emotional, and physical situation can be obtained.Using brain magnetic information and information from a data bank based on the individual characteristics of the operator, it is possible to obtain information on the current operator's condition. The information indicating the above-mentioned personal characteristics includes physiological (for example, a tendency to produce certain frequency components) and emotional characteristics (such as being prone to anger), which can be converted into numerical data. Use the converted data or the data replaced with symbol processing data.And,
The current condition of the operator is evaluated using numerical comparison, probabilistic evaluation 9, and artificial intelligence method based on the information currently obtained from the operator, target/general-purpose data, and operator-specific information. Using a method such as a grasping theory, it is determined whether the condition is within a certain range (normal) or outside that range (abnormal). Preferably, this judgment is made at two levels. One is "the operator's activity level is abnormally low" and the other is "the operator's activity level is abnormally high." In the former example, there is a sense of restraint, and in the latter example, there is over-stress. Then, based on this determination result, some kind of action is taken for the operator. For example, when you are alone, make loud noises or shake the chair you are sitting on. When we are overly nervous, we send out a message saying, ``It's okay. Please calm down.'' On the other hand, we consider the importance and urgency of the operations that the operator took just before (for example, pressing a control button).
C1 Holds the operation, but instructs whether to cancel or restore. Furthermore, if there is a possibility of abnormal behavior due to over-stress, all operations will be disabled (input prohibited) for the time being. However, the blocking settings regarding these operations can be canceled at any time when the operator tries to calm down, or by another operator. By doing so, the possibility of unexpected situations occurring due to human error can be reduced. A plant control device which is an embodiment of the present invention applied to an atomic couplant will be described based on FIG. When brain activity levels are conceptually divided, they are divided into Phase O to Phase 4 as shown in Table 1 (Safety Ergonomics, Kunie Hashimoto, Central Industrial Accident Prevention Association). The state of consciousness and the effect of attention on each face. Physiological state + ! This is to prevent erroneous operation of Plan 1~ due to the following: The Plan 1 control device of this embodiment includes: an operation panel 1 having operation buttons (or operation levers) 2; a brain magnetism detection device 3.
1 information analyzer 142 judger 15, database 1G storing general-purpose items necessary for feature extraction, data mousse 1F storing operator characteristics, notification selector 20
．． Announcement means (for example, speaker 22, I-flange 23 and vibrator 24 provided on chair 25), operation case 1-26
have. Record the output of the 'I'll meter 15 (record 1r-t to record 1r-t) 8 and the display 1 that displays the output.
0 is set. The brain magnetism detection device @3 has a cap shape as shown in FIG. 2, and has a large number of brain magnetism sensors 4 arranged in a shape of 71 to 4 inside. The brain magnetism detection device 3 is equipped with a transmitter 10 connected to each brain magnetism sensor 41 at the rear, and one antenna connected to the transmitter 10. The brain magnetic sensor 4 has the configuration shown in FIG. 3. SQ
The brain magnetic sensor 4 using UID can be constructed with a size of several square meters. This brain magnetic sensor 4 includes a high-temperature superconducting coil 5, a secondary coil 6 on a superconducting thin film 7, and a superconducting Josephson junction element 8. Terminal 9A and superconducting Josephson junction element 8 attached to superconducting thin film 7
The terminals 9B connected to the oscillators]O are respectively connected to the oscillators]O. The superconducting material constituting the brain magnetic sensor 4 is preferably a substance that exhibits superconductivity even at room temperature. The input end of the brain information analyzer 14 is connected to the receiver 2, and the output end of the analyzer 14 is connected to the determiner 15. The output terminal of the determiner 15 is connected to the notification selector 20 and the operation games 1 to 26 in addition to the record A 118 and the display 19. The output end of the announcement selector 20 is connected to the speaker 22 . Lever 23. It is connected to a vibrator 24 and a display device 21 such as a display. The display device 21 is installed on the operation panel 1. 28 is an atomic couplant. The output end of the operation cable 26 is connected to the equipment to be controlled within the atomic cablings 1-28. The amount of plant information detected by each sensor provided in the atomic couplant 28 is stored in the data storage device 29, and is also sent to the display device 21 or each meter (not shown) provided in the operation panel 1. . An operator 26 is sitting on a chair 25 and operating the operation buttons 2 on the operation panel 1. An operation signal generated by operating the operation button 2 is transmitted to a predetermined controlled device of the atomic couplant 28. The status of the atomic converter 1-28 is detected by the sensor described above, sent to the meter and display device 21, monitored by the operator 26, and simultaneously stored in the data storage device 29. This is the basic configuration of a control device applied to a nuclear power plant. In addition, safety and
Therefore, a guide system 30 for driving is provided which generates information and warnings to assist the operator in the event of an abnormality or accident based on the information stored in the data storage device 29. Operator 2 (XH is a cap-shaped brain magnetism detection device 33
3. The coil 5 of each brain magnetic sensor 4 detects brain magnetism. This detected brain magnetism is amplified on the superconducting thin film 7 on which the -order coil 6 is placed, and this is detected as a voltage change by the superconducting Josephson junction element 3. The voltage detected at the superconducting Josephson junction element 8 is
Transmitter 10

[I can tell you this. The transmitter 10 converts the electrical signals output from each brain magnetic sensor 4 into radio waves and transmits them from the antenna 11. The voltage signal transmitted from the antenna 11 is received by the receiver 12 and sent to the word information analyzer 14. The local or comprehensive information about the brain thus obtained as a voltage signal is analyzed by the word information analyzer 14 as shown in FIG. 4. Masu, Flock i 4-A
Then, depending on the nature of the input raw data (data measured by the brain magnetic sensor 4), frequency analysis for α, β, o, and y waves, spatial distribution processing, window processing, noise processing, etc. Do this. Also 1. If we have input data or an average value that captures the state of the entire brain, we will perform frequency analysis on this. Block 1411 creates an intensity map of the resulting frequency components, which intensity map is characteristic of the current state of the operator 26. The plotter 14C uses past data 14De to obtain plotter]-/IR. Find the temporal change trend of the frequency component intensity map. On the other hand, if the input data is a large number of data indicating local states of the brain, various maps such as intensity distribution on spatial coordinates and frequency analysis maps are created in block 14E. In block L/11=", from these maps created in block 1.4 E, we extract the characteristics of how the and part of the brain is activated and the intensity of the activation. Flock 14 C; then, the past value 1
4. Find the time change trend by comparing with 1-I. The information obtained from blocks l4C and 14(]tesha1 (information that characterizes the brain state of the operator) is sent to the judger 1)3, and the judger 15 performs word information analysis. vessel = 15
- Based on the information manually entered from 1-71 and the information retrieved from data heads 1G and 17, it is determined whether the operator 26 is currently in a normal state of mind or is heading towards an abnormal state of force. do. The processing contents of the determiner 15 will be explained in detail with reference to FIG. 4. The plotter 15A inputs the results of the brain state of the operator 26 whose features have been extracted by the word information analyzer 14. Flock 15A includes: 1) General-purpose matters related to feature extraction (for example, when the magnetic force in a specific region increases, it is determined that the patient is in a sleep state, etc.).
In the database 16 that stores a collection of specialized information used to judge the condition, and in the database 16 that stores individual characteristic data (results of daily interviews and medical examinations and reactions during training using a simulator). Using the information in the database 17, which stores information such as ``Even if I'm nervous, I will persevere to the end'' and ``I won't show a relatively big reaction even if I say no''. The original information obtained by the word information analyzer 14 through numerical evaluation and inference based on symbolic processing is comprehensively evaluated. Flock 1.5B is based on the processing result of block 15A.
are the aforementioned faces 0, 1 . ．． 2. It is determined whether the state is in phase O or 1- of 3 and 4, in phase 4, or in the normal state ()]]2--2, 3. Such a determination result is recorded as the output of the determiner 5 and the display 19. Announcement selector 20
and is transmitted to operation case l-26. The judger 15 sets a level to issue a warning when the judgment is subtle or is currently normal (but it rapidly changes to abnormality). Good. Judgment unit] 5/l - When outputting a signal indicating "abnormality" ↓ J, for example, a signal corresponding to face O or], the notification selector 20 first sends the f-voice announcement monk's name to the speaker 22. output,
Operator 2 (If the ball does not perform the specified operation, Operator 26
1 drive signal is outputted to the rest of the levers 23 that are hit, and when they still do not respond to the predetermined operation, a 1 drive signal is outputted to the vibrator 24. Whether or not the operator 2G has performed one predetermined operation t'' is determined by the output of the manual operation button 2, etc. operated by the notification selector 20. The output of the notification selector 20 causes, for example, the speaker 22 to If this operation is not performed, the light mouse will change color 9 or make a loud sound, and the driver will drive at 1 tsuba 23. Member 2G
A part of the body of
Judgment to forcibly extort. If a signal corresponding to abnormal excitement and overstress in Phase 4 is output from the monitor 15, the speaker 22 will say "It's okay, 1. Calm down.", "You are always disciplined 1. This time. Messages such as "We can treat this problem well" are conveyed using nine sounds. Naturally, all of these processes are communicated to other operators (especially managers) and recorded. In particular, when it is determined that the face is O or 1,
A case can be considered where operation button 2 is pressed during operation (426, unnecessary, ☆, etc.) On the other hand, in the state of face 4, there are large individual differences among operators, and some operators may not be able to perform special operations, or they may press golden proverb 1 one after another. In various plants including nuclear power plants, the inherent safety (even if left unattended, it returns to normal as a physical phenomenon) is maintained, or automatically activated. The equipment is configured to operate and maintain the highest level of safety.I wonder if the driver L is particularly overstressed and ends up doing something that he shouldn't have to do. Prevention 11- will further improve safety. Therefore, when the determiner 15 determines that the condition of the operator 26 is normal, the operation case 1-26 will indicate the abnormality. Based on the output signal of the determiner 15, the operator determines whether the operator will perform the following five operations (I'J it is transmitted through the speaker 22 etc. by the operation of the notification selector 20) or any abnormal operation other than a predetermined operation. ), i.e. prevents the signal from being transmitted to plan 1~
lz. The operation case 1-26 also cancels the operation already performed by the operator iI'l as long as it is possible. The operation case 1-26 is a means for preventing a signal of an abnormal operation performed by the operator 2G when the operator 2G is in an abnormal state from being transmitted to the equipment to be controlled by Plan 1. The specific functions of the operation game 1 to 26 are shown in FIG. 26 A, 26 B, 26 C, 26 E,
26G and 2GJ are determination units which instruct YES processing when a determination condition is met, and NO processing when the determination condition is not satisfied. 26 T-
, and 26M are signals to the glue cellar 1 from the outside. The determination unit 26A determines whether the determination signal 15 outputs an "abnormal" determination signal immediately before (this refers to the predetermined time one hour before), and if τ = 0, it determines what has already been done. 2), it is determined whether the operator 26 has already performed a certain operation (A). If YES, the determination unit 26B determines whether the operation (A) is valid. If this determination is No, the determining unit 26C determines whether operation (A) can be considered to be equivalent to a state in which no input has been substantially input to the plant 28 due to the time delay and responsiveness. Judgment unit 26
When the determination in C is YES, the block 26I] outputs a command to undo the operation (A). When the determination by the determination unit 26C is NO, the determination unit 2GE determines whether it is better to return the operation button 2 to its original state. operation(
If A, ) can have a reversible effect on the blunt 28, the determination section 26E makes a determination of YES, and the operation button 2 is returned to its original position at the block 26F. Then, the determination unit 2C;G determines whether the states of plans I to 28 actually return to their original states. Judgment unit 26
When the determination result of E and 26G is NO, the operation performed by the operator is an error, and corresponding specific measures to cover this are taken in blocks 26H and 26. If the determination by the determination unit 26A is NO, the operation (B) to be performed from now on can be blocked. Therefore, when the determination by the determination unit 26A is No, the determination unit 26A
J is based on other priorities (for example, when operation (B) is added unconditionally by a command from a higher-level judge).
Unless there is a type of reset command), the determination is NO. For this reason, the operator 26 does not press the operation button 2 in the block 26.
Plan the signal for operation (B) generated by pressing .
28. This state continues until the operator 2G returns to a normal state or is replaced by another operator. However, the operating game 1-26 requires sufficient data regarding the status and driving history of Plan I-28 in order to increase the rationality of its decisions. Therefore, operation case 1/section 2
6 stores these data and judgment rules in the data storage device 2.
9 and 1 from the judgment means 27. However, the simplest configuration is to set τ = 0 and specifically reset the operation (13) No. 44 26L, 2.
The method would be to block the arrival of 6M. In this example, since the brain magnetism of the operator 26 is measured,
It is possible to grasp the activation state of the brain of the operator 2G, specifically, the emotions, psychological state, and physical state of the operator 26. Furthermore, since this brain activation state and the individual characteristics of the operator 26 stored in the database 17 are taken into account, the current phase of the operator can be determined with high accuracy. Therefore, it is possible to appropriately warn the operator based on the determined face, and it is possible to prevent erroneous operation of Plan I- based on human error and the occurrence of Plan I-accidents due to this. Furthermore, it is possible to prevent signals based on operations performed by an operator in an abnormal state, particularly abnormal operation signals, from reaching the plant. Another example of the configuration of the low brain magnetism detection device will be described with reference to FIGS. 6 and 7. The brain magnetism low detection device 3Δ shown in FIG. 6 is attached to the upper end of the backrest of the chair 25 and is placed at a position where the back of the operator's head comes into contact with it. The brain magnetism low detection device 3A has a large number of brain magnetism sensors 49 and transmitters 1 arranged in a matrix like the above-described brain magnetism low detection device 3 except that it is curved.
0 and an antenna 11. The brain magnetism low detection device 3B shown in FIG. 7 is installed at the tip of a rotatable robot arm 35 attached to the chair 25 so as to be located directly above the head of the operator 2G sitting on the chair 25. has been done. The brain magnetism detection device 3B has a small camera 36 in addition to the configuration that the brain magnetism low detection device 3 has. The brain magnetism low detection device 3B is moved by the robot arm 31-2 based on information obtained by the small camera 3G so as to always face a specific position of the head of the operator 2G. For this reason, the brain magnetism low detection device 3B can easily follow (move and rotate) the movement of the operator's head, and can obtain highly accurate spatial information without placing any burden on the operator. Although this example has been explained with reference to a nuclear power plant because it requires the highest level of safety, it is generally applicable to chemical plants where there is potential danger, or transportation such as airplanes, trains, ships, etc. The bone f- can also be widely applied to institutions. In addition, the individual technologies described in the configuration of this embodiment (for example, a sensor that detects the state of the brain, and
(information processing method for determining normality, etc.) is not limited to the above-mentioned configuration and can be applied to the present invention. Further 1. In addition to the information from the second part, sweat, heartbeat,
It is also possible to increase the accuracy of determining the operator's condition by using information such as blood pressure as supplementary information to brain information. Further, in the above-mentioned embodiment, the operator's condition is classified into the minimum necessary three types: 1. Although the conditions of the operators have been classified into two, it is also possible to further divide the conditions of the operators and give detailed instructions to the operators and instructions to the operation panel according to each condition. [Effects of the Invention] According to the present invention, the activity status of the brain, which is the center of the human information processing system, is grasped and the results are fed back to the human being and the device, so the operator's condition can be determined with high accuracy. . Therefore, warnings to operators can be given appropriately, which has the effect of preventing erroneous operation of the plant due to human error and the occurrence of Plan 1- accidents based on this.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a blunt control device according to an embodiment of the present invention, Fig. 2 is a block diagram of a brain magnetism low detection device shown in Fig. 1, and Fig. 3 is a block diagram of a brain magnetism sensor shown in Fig. 2. Figure 4 is an explanatory diagram showing the functions of the word information analyzer and judger in Figure 1. Figure 5 is an explanatory diagram showing the functions for the operation game 1 in Figure 1.
7 and 7 are configuration diagrams of other embodiments of the 111 magnetic detection device. ■ Operation panel, 3 Brain magnetism detection device, 4 Brain magnetism sensor,]-〇 Transmitter, 12 Receiver, 14...Brain information analyzer, 15 Judgment device, 16.17 Data Heath, 20
Announcement selector, 21 Display device, 22/Speaker, 23
・Lever, 24 ・Exciter, 2627 6 days ago '10

Claims (1)

[Scope of Claims] 1. Brain magnetism detection means for measuring the brain magnetism of an operator, and brain information for obtaining information regarding the brain activity status of the operator based on the signal obtained by the brain magnetism detection means. an analysis means, a means for storing characteristic data of the individual operator;
means for determining the condition of the operator based on the information obtained by the brain information analysis means and characteristic data of the operator stored in the storage means; and means for issuing a warning to the operator in response. 2. The equipment control device according to claim 1, further comprising means for blocking transmission of a signal to the equipment to be controlled in response to an operation performed by the operator in accordance with the determined state of the operator.