Method of correcting functional status of human operator and apparatus therefor

FIELD: physics, computer engineering.

SUBSTANCE: group of inventions relates to ergatic systems and can be used to correct the functional status of a human operator. The method includes evaluating the status of a human operator. The status indicator used is the heart rate. Limiting values of the range of a good status ChSSmin and ChSSmax are set for each human operator. When the heart rate exceeds the limiting values, the energy stimuli used are light pulses and binaural action, the frequency f of which is set in accordance with a given expression. An apparatus for correcting the functional status of a human operator is used. The apparatus comprises a central control unit connected to a storage unit, a stimulus generating unit and an analysis unit. The stimulus generating unit is connected to a stimulation unit. The output of the analysis unit is connected to the central control unit. The apparatus additionally includes a unit for measuring and processing an electrical cardio signal and a heart rate determining unit. The output of the unit for measuring and processing an electrical cardio signal is connected to the input of the heart rate determining unit, the output of which is connected to the analysis unit.

EFFECT: group of inventions improves the efficiency of correcting the status of a human operator, prevents excessive fatigue of the human operator quickly and in advance, reduces emotional and psychological stress, raises the level of activity of the body owing to a method of determining the status of the human operator, using the heart rate ChSS as an indicator of the status, the effect of light stimuli and binaural action.

2 cl, 2 dwg, 1 tbl

 

The invention relates to the field of ergatic systems and can be used for determination and correction of the functional state of the operator man-machine systems. Method implemented in the device enhances the effectiveness of the correction and prevention of deterioration of the human operator before there is a moment when he will not be able to fulfil its functions.

The known method of maintaining operation of the driver of the vehicle [1], in which the presentation of the subject of the stimulus, the registration response to the stimulus, the evaluation of the state of the subject, depending on the degree of satisfaction of the assessment of the testee must take action to restore health by strengthening the attention of the human operator mainly verbal stimuli, or in a critical situation, when the evaluation level is too low, will include one pre-selected program to address a critical situation (in this case, the emergency brake of the vehicle). The disadvantage of this method is its narrow application only in the field of condition monitoring of drivers of vehicles, as well as the fact that the correction condition of the driver runs only in the form of intensification of his attention. Additional re�the core and visual stimuli which are included as a result of receiving an unsatisfactory evaluation state of the subject, in fact only indirectly affect the functional state of the subject and aimed mainly at obtaining refined estimates, the level of which is determined by whether the driver on your own to continue to operate the vehicle or need outside interference.

In the same patent describes a system for implementing the method of maintaining operation of the vehicle driver, which includes connected to the processor blocks the creation and submission of stimuli (sound and visual), blocks of reception and response to stimuli, the block of comparison and decision, a display device (display). The disadvantages of the system are its narrow purpose for use on vehicles, as well as what she allows to perform correction of the driver only in the form of enhanced attention by signalling to the driver about his poor condition and inducement to intensify attention to the continued implementation of the functions.

Closest to the proposed method (prototype) is a method comprising presenting a stimulus to the human operator, the registration response to stimuli, assessment of the current state of the human operator on �Tsvetnoy reaction and stimulation of the human operator, as incentives to correct the condition using energy incentives aimed at changing the functional state of the human operator and the sequence of which is formed in the energy program of stimulation, each of which is aimed at correcting certain of the current state of the human operator, which is evaluated by the degree of differences of indicators of the current state of the individual indicators that determine the state of the human operator as a good, while in response to the applicable incentives use of sensorimotor reaction, and as indicators of the state of use of the functional level of the Central nervous system, stability of reaction and the level of functionality calculated on the value of sensomotor reactions [2].

The disadvantages of this method.

1. Method is not suitable for many kinds of activities, because the human operator have to be distracted to the applicable incentives to determine its state.

2. For activities with a high level of emotional impact, more effective to correct the condition would be to use neurosensory therapy that allows you to affect the person-operator of the light pulses and binaural effects.

3. Some�s different (opposite) state can give the same average reaction times.

The proposed method of correction of the functional state of the human operator allows to eliminate the above disadvantages of the prototype.

The essence of the proposed method is as follows.

Assess the state of operator if different indicators of the current state of the individual indicators that determine the state of the human operator as good, have energy incentives aimed at changing its functional state. As indicators of the condition uses the value of heart rate variation and for each human operator specify the boundary values of the range good condition HRminand heart ratemax. As an energy stimulus use light pulses and binaural effects, the frequency f of which is defined in accordance with the expression

In the proposed method for the correction used the same stimuli but with different frequency. If the heart rate is in the range [HRmin; HRmax], the corrective effect is not provided.

The task of correction of the functional state of the human operator can be solved by using the neurosensory therapy, an important component of which is audio-visual stimulation (ABC). Unlike other psihoterapevticheskii� techniques ABC does not affect higher mental processes it merely creates the conditions for the exercise of conscious choice of the optimal behavioral responses and facilitate voluntary regulation of mental functions and autonomic responses due to optimization of neural processes in the cerebral cortex and Troubleshooting prerequisites for the functioning of the generator of pathologically enhanced excitation. With such opportunities, ABC can be used as a preventive measure, providing the increase of the adaptation reserve protection mechanisms of the internal organs from the emotional and psychosocial stress, as well as optimization of adaptive responses during extreme impacts. To conduct ABC used appliances generating light and sound signals, which act through the visual and auditory analyzers, with the involvement of cortical, limbic structures and the reticular formation of the brain, which indirectly affects neurohumoral regulation [3].

For the purpose of visual effects is usually used to light stimuli with a frequency of from 0.5 to 50 Hz. Table 1 summarizes the effect of different frequencies on the functional state of a man. The frequency of the stimuli may be the same, but the ratio of times of on and off signals may be different. Normal� the ratio is 50/50, and calculated according to the rule of "Golden section" - 12,8/87,2; 37,6/62,4, and Vice versa. Short pulses have a more stimulating effect, long - more brake.

The concept of the frequency of the sound stimulation is laid two values:

- carrier frequency - audible tone (continuous tone),

is the modulating frequency coincides with the frequency of light stimuli (intermittent beep).

Commonly used carrier frequency from 50 Hz to 2000 Hz. The most commonly used range from 60 to 400 Hz. Selection of colors is produced on the basis of psycho-acoustic effects of different sound tones. We can also carry out multi-tone exposure by generating signals of a special form. The range of frequencies up to 150 Hz includes the resonant frequency of the internal organs, therefore, binaural beats in the Delta range, organised for carrying up to 150 Hz, can inhibit metabolic processes. Binaural beats in the Delta range, organized on a bearing of 150 to 500 Hz, can inhibit mental functions. Accordingly binaural beats in the beta range on the same bearing will accelerate metabolic processes and activate conscious activity.

When forming an audio tone in the headphones with different frequency in addition to sounding�Oia these tones, there is a feeling of sound pulsations with a frequency equal to the difference frequency sound in the right and left earphone. For example, if the left ear to apply a tone with a frequency of 200 Hz, and the right - 208 Hz, one hears the audio tone frequency (200+208)/2=204 Hz modulated with a sense of sound pulsations with a frequency 208-200=8 Hz [4].

The frequency of table 1 formed the basis for the formation of the expression (1). Of these waves for stimulation of the human operator in a state of extreme relaxation, in which heart rate<HRminwere the selected frequency of the stimulating pulses from 12 to 40 Hz, and in a state of severe stress, in which HR>HRmax- from 3 to 15 Hz. Moreover, it is assumed the change in frequency of stimulation changing the heart rate. The expression (1) can be illustrated in Fig. 1.

The proposed method allows for comparison with the known method (prototype) to increase the efficiency of correction, to prevent the deterioration of the human operator before there is a moment when he will not be able to fulfil its functions. Improving the efficiency correction is achieved by the fact that when diagnosing the operator does not have to be distracted to the applicable incentives, the current heart rate of the human operator allows you to easily and reliably recognize such States as monotony, emotional tension and page�SS, and use a combination of light and binaural effects can reduce emotional and psychological stress and increase the level of activation of the human operator when monotonie. The change in the frequency correction is carried out smoothly in proportion to the state change.

Summary of the invention and the variant of implementation of the proposed method is illustrated by the following graphics material:

- Fig. 1 is a graph of frequency of stimulation on the frequency of cardiac contractions;

- Fig. 2 - functional diagram of the device.

To achieve the technical result consists in increasing the efficiency of correction, to prevent the deterioration of the human operator before there is a moment when he will not be able to fulfil its functions, comprising a Central control unit connected to the memory unit, the processing unit incentives and the analysis unit, the processing unit incentives connected to the stimulation unit, the output of the analysis unit connected to the Central control unit, inputs of the block of data retrieval and processing electrocardiograma, the block definition of heart rate, and the output of the pickup and processing of electrocardiograph is connected to the input of the block definition of heart rate, the output foun� connected to the unit of analysis.

The device comprises (Fig. 2) from the pickup unit 1 and the processing of electrocardiograma, block 2 determine the heart rate, block 3 of the analysis, the Central control unit 4, the memory unit 5, unit 6 creating the incentive, block 7 stimulation.

Device correction of the functional state of the human operator contains the Central control unit 4 is connected to the memory unit 5, unit 6, creating the incentive, and the unit 3 analysis, block 6 forming the incentives connected to the stimulation unit 7, block 3 of the analysis connected to the Central control unit 4. The output of the pickup unit 1 and the processing of electrocardiograph is connected to the input of block 2 determine the heart rate, the output of which is connected to the unit 3 analysis.

The proposed device correction of the functional state of the human operator works as follows. When you switch the device to determine the need for correction of the functional state of the human operator of the block 1 is carried out the removal and processing of electrocardiograma. Unit 2 determines the values of heart rate, which is passed to block 3 of the analysis. In unit 3 there is an analysis of the values of heart rate and depending on the type of activity and individual characteristics of the human operator is determined by the range of� good condition depending on which of the memory unit 5 to the Central control unit 4 is extracted and transmitted to the heart rate ofminand heart ratemax. These values are used to calculate the frequency of the energy pulses in the Central control unit 4 by the formula (1), which is transmitted in block 6 of the formation incentives. Unit 6 unit 7 controls the stimulation, affect human operator light pulses and binaural effects.

Technical and economic effect of the proposed method and device for its implementation is to increase the efficiency of correction of the state of the human operator that allows an early and swiftly by applying stimulation energy to prevent fatigue of the human operator before it reaches the status, not allowing him to complete execution of its functions. Improving the efficiency correction is achieved by the fact that when diagnosing the operator does not have to be distracted to the applicable incentives, the current heart rate of the human operator allows you to easily and reliably recognize such States as monotony, emotional tension and stress, and using a combination of light and binaural effects can reduce emotional and psychological �of agrusti and increase the level of activation of the human operator when monotonie. The change in the frequency correction is carried out smoothly in proportion to the state change.

Literature

1. Patent RU 2111134 C1, 6 WK 28/06, 1998.

2. RF patent №2370212. Method of correction of the functional state of the human operator and the device for its implementation.

3. Golub, J. V., Zhirov V. M. Medical and psychological aspects of the use of light and sound stimulation and bio-feedback, SPb: CAREY, 2007.

4. Rybnikov V. Yu., Bobrischev A. A., Y. V. Golub Audiovisual correction of the functional state of athletes: theory and practice. Monograph. SPb.: Polytechnic-service, 2009.

1. Method of correction of the functional state of the human operator, namely that assess the state of the human operator, if different indicators of the current state of the individual indicators that determine the state of the human operator as good, have energy incentives aimed at changing its functional state, characterized in that as indicators of the condition uses the value of heart rate variation and for each human operator specify the boundary values of the range good condition HRminand heart ratemaxwhen the heart rate limit values as an energy stimulus use light pulses and binaural impact�, the frequency f is selected in accordance with the expression

2. Device correction of the functional state of the human operator according to claim 1, comprising a Central control unit connected to the memory unit, the processing unit incentives and the analysis unit, the processing unit incentives connected to the stimulation unit, the output of the analysis unit connected to the Central control unit, characterized in that the device additionally introduced the unit of retrieval and processing of electrocardiograma, the block definition of heart rate, and the output of the pickup and processing of electrocardiograph is connected to the input of the block definition of heart rate, the output of which is connected to the unit of analysis.



 

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