Device for control and evaluation of physiological processes

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to devices of medico-biological purpose, intended for registration and evaluation of fast-proceeding physiological reactions, emerging as response to produced stimuli. Device contains microcontroller, analogue-digital converter (ADC), first commutator, sensors of breast breathing, abdominal breathing, skin-galvanic response, arterial pressure, cardio-vascular activity, sensor of motor activity, power unit, preliminary amplifiers, signal amplifiers, filters, first and second digital-analogue converters (DAC), tool amplifier and unit of connection with personal computer, supplied with galvanic attenuator. Via amplifiers and filters sensors are connected with corresponding inputs of commutator whose controlling input is connected with first microcontroller bus, and output - with first input of tool amplifier. Second input of tool amplifier is connected to output of first DAC, third input - to output of second DAC, and output - to ADC input. Inputs of first and second DAC and group of inputs-outputs of ADC are connected with second microcontroller bus, whose third bus is connected to unit of connection with personal computer. Additional channel has possibility of connection to its input of face mimics sensor, piezoplethysmogram or variable component of skin-galvanic response and includes second electronic commutator, to whose outputs subchannels of processing of signals from corresponding sensor are connected. First subchannel includes successively connected preliminary amplifier and filter, second subchannel - preliminary amplifier, filter, signal amplifier and additional filter, and outputs of subchannels via third electronic commutator are connected to first commutator input. Controlling input of third commutator is connected with microcontroller.

EFFECT: registration of maximal number of physiological parametres and ensuring objectivity of obtained information.

2 cl, 2 dwg

 

The scope to which the invention relates.

The invention relates to medicine, in particular to devices biomedical destination intended for registration and evaluation of rapid physiological reactions that occur in response to incentives offered to him (questions, articles, pictures, etc.). The invention can be used for the implementation of psycho-physiological method of detecting concealed information when conducting surveys, forensic psychophysiological examinations, in the course of the proceedings on the facts of abuse, corruption, theft. The proposed device is a self-contained unit and serves for the reception, amplification, conversion and transfer for further processing in the personal computer of physiological parameters of the test person: tonic and physical components of the electric resistance, thoracic and abdominal respiration, blood pressure, cardiovascular activity (plethysmogram, photoplethysmogram), motor activity (tremor and the sensor face mimics).

The level of technology

For conducting psychophysiological research in medicine and other fields are widely used in various devices and monitoring and analysis of physiological reactions, which include polygraphs, analyzers is the tressa voice, tensometric platform, etc. These devices detect and handle reactions to perceived stimuli.

Foreign patent literature known device for monitoring, storage and transfer of recorded information, see, for example, EP 0212278. The known device comprises a microprocessor, a decoder, a block of data reception, the analog-to-digital Converter (ADC), a switch, a sensor, heart rate, shaper signal. This device, however, due to the small number of analyzed physiological parameters has low reliability.

From patent US 4940059 known polygraph with improved registration cardiomegaly, along with heart rate uses information about blood pressure.

From international application WO 03/057003 known non-invasive polygraph, based on the optical analysis. The device generates a series of pulses in a laser, infrared, these pulses are reflected from the subject arrives at a receiver associated with the processor, the analysis, the information appears on the display.

One of the last foreign developments is the device disclosed in the publication US 2007270659, this device allows you to remotely detect false information in the information obtained from the subject is object using, at least one physiological parameter that is passed in the distance. For evaluation, the interpreter uses the polygraph.

Among domestic developments, you can select the device in the patent RU 2010326, which uses a number of parameters: the parameters of the dynamics of cardiovascular activity, respiration, galvanic skin response. The device contains a microprocessor, the unit receiving the information, the sensors of physiological parameters.

Closest to the present invention is a device monitoring and evaluation of physiological parameters in patent RU 2203614. The known device comprises a microcontroller, ADC, switch, sensors thoracic respiration, abdominal respiration, galvanic skin response, blood pressure, cardiovascular activity, movement sensor, power supply, pre-amplifiers, signal amplifiers, filters, digital-to-analogue converters (DAC), an instrumental amplifier and a connection unit with a personal computer equipped with galvanic isolation. The sensors through the amplifiers and filters connected to respective inputs of the switch, the control input of which is connected with the first bus of the microcontroller and the output to the first input of the instrumental amplifier, the second input of the instrumental amplifier connected to the output of the first DAC, which is the second entrance - the output of the second DAC, and the output to the ADC input, the inputs of the first and second DAC and the group of inputs-outputs of the ADC are connected with the second bus of the microcontroller, the third bus which is connected with the connection unit with a personal computer. This device allows you to get data on the availability of the information received false information with high reliability. However, the known device uses a limited number of parameters, it does not allow selection of parameters to estimate. In this regard, the reliability of the conclusions obtained with the use of this device is insufficient.

Summary of the invention

The problem to which the invention is directed, is to create a device monitoring and evaluation of physiological processes that use the maximum number of physiological parameters, the choice of parameters, in particular in the test process, for subsequent assessment of the degree of importance and provide unquestionable objectivity of the conclusions.

In addition, the invention allows to provide both fixed and field conditions.

In addition, the invention improves the reliability of the information received through the connection channels to get information about the different components of a single parameter.

Technical the cue result is achieved due to the fact, in the device of the monitoring and evaluation of physiological processes, containing the microcontroller, ADC, the first switch, sensors thoracic respiration, abdominal respiration, galvanic skin response, blood pressure, cardiovascular activity, movement sensor, power supply, pre-amplifiers, signal amplifiers, filters, first and second DACS, instrumental amplifier and a connection unit with a personal computer equipped with galvanic isolation, with the sensors through the amplifiers and filters connected to respective inputs of the first switch, the control input of which is connected with the first bus of the microcontroller and the output to the first input of instrumental amplifier, the second input of the instrumental amplifier connected to the output of the first DAC, the third input to the output of the second DAC, and the output to the ADC input, the inputs of the first and second DAC and the group of inputs-outputs of the ADC are connected with the second bus of the microcontroller, the third bus which is connected with the connection unit with a personal computer, used an additional channel that can connect to input sensor face mimics, sensor peoplemistakenly or galvanic skin response and including a second electronic switch, the outputs of which are connected subchannels processing signals from the respective sensor, if this is m first sub-channel includes the United sequentially pre-amplifier and filter the second pre-amplifier, a filter, a signal amplifier and an additional filter, and the outputs of subchannels through the third electronic switch, a managing input coupled to the microcontroller, is connected to the input of the first switch. The sensor face mimics equipped with elastic straps with adjustable length, ending with snaps for attaching the sensor on the head of a man, and a cap having a possibility to contact with a human head and through the spring to act on the button connected to the piezoelectric element, the findings of which are sensor output.

Description of the drawings

The invention will be more fully understood from the further description with reference to the drawings, in which:

figure 1 presents a functional diagram of the device

figure 2 shows a General view of the sensor face mimics.

Description of the preferred variant of the invention

Device monitoring and evaluation of physiological processes 1 is designed to work in conjunction with a personal computer (not shown), which provides processing and displaying the received information, recording, storing, printing of test results.

The device 1 contains a microcontroller 2, ADC 3, the first switch 4, the thoracic respiration sensor 6, the sensor abdominal breathing 5 sensor, galvanic skin response 7, blood pressure sensor 8, the sensor is cardiovascular activity 9, the movement sensor 10, the power supply unit 11, pre-amplifiers 12-19, amplifiers signals 20-22, filters, 23-33, the first and second DAC 34 and 35, the tool 36 and strengthen the connection unit 37 with a personal computer equipped with galvanic isolation. Sensors 5-10 through the pre-amplifier 12 to 16 and 19, filters 23-29 and 33 and the signal amplifiers 20 and 22 are connected to the corresponding inputs of the first switch 4, the control input of which is connected with the first bus of the microcontroller 38, and the output to the first input of the instrumental amplifier 36, the second input of the instrumental amplifier 36 is connected to the output of the first DAC 34, the third input to the output of the second DAC 35, and the output to the ADC input 3, the inputs of the first and second DAC 34 and 35 and a group of input-output ADC 3 is connected with the second bus bar 39 of the microcontroller 2, the third bus 40 which is connected with the connection unit 37 with a personal computer. Additional channel entered in the device according to the invention, has the ability to connect to your sensor input face mimics 41, additional sensor peoplemistakenly or additional sensor, galvanic skin response (not shown). Additional channel comprises a second electronic switch 42, the outputs of which are connected subchannels processing signals from the respective sensor. The first sub-channel includes the United placenta is therefore pre-amplifier 17 and the filter 30, the second channel includes a pre-amplifier 18, a filter 31, a signal amplifier 21 and an additional filter 32. The outputs of subchannels through the third electronic switch 43 is connected to the input of the first switch 4. The control input of the third switch 43 is connected to the output of the microcontroller 2.

The sensor 41 facial expressions facial is designed for recording motor activity of the muscles of the human face. The sensor 41 is equipped with elastic straps 44 with adjustable length, ending latches 45 for fastening the sensor 41 on the head of the examinee, and a cap 46 having a possibility to contact with a human head, and through a spring (not shown) to influence the button 47, connected to the piezoelectric element, the findings of which are the output of the sensor 41. The sensor housing 41 attached cable with connector. Perceived by the cap 46, the pressure is transmitted through the spring on the button 47. An electrical signal proportional to the derivative of the power button, the output from the sensor through the cable. The elements of the sensor body 41 made of aluminum alloy with protective oxide decorative coating.

Instead of the sensor 41 of the face gestures to the additional channel can be connected to the piezoelectric sensor plethysmogram or tremor or sensor, galvanic skin response (variable component).

The sensor 10 on Yateley activity is designed for recording motor activity. It consists of two sensors that are installed under the legs of the chair, and connection cable with plug. The sensor element is made of two steel plates separated by a washer made of porous rubber. The basis of the sensor element is a piezoelectric element affixed to the inner surface of one of the metal plates. To transfer forces to the piezoelectric element from the opposite plate on it glued rubber disk. Sensor elements are connected in parallel.

Sensor, galvanic skin response 7 designed for registration of the changes in skin resistance. The sensor 7 is fixed with the aid of fasteners on the fingers of the test.

Sensors breast 5 and abdominal 6 respiratory carried out constructively, and consist of a housing that contains the variable capacitor and the electronics Board, the two levers and clamps connected to the levers elastic straps. The clamps are connected by a chain, with which the sensor can be mounted on the chest of any size.

Blood pressure sensor is a pear with the exhaust valve, attached to it by tee, connecting tubes with pneumocushion and a rubber cuff.

Sensor peoplemistakenly designed for registration of the indicators of peripheral blood vessels. Dutch is supplied to a fastener for fastening to a human finger. Perceived by the cap pressure is transmitted through the spring on the button connected to the piezoelectric element. An electrical signal proportional to the derivative of the power on button is displayed via a cable. Sensor photoplethysmogram is mounted on the finger in the same way. Perceived by the photodiode mounted on the body of the sensor, infrared luminous flux penetrating the peripheral blood vessels in the finger is converted into an electrical signal proportional to the light power of the stream, and out of the sensor through the cable that connects it to the corresponding channel of the device.

The device is used as follows.

The outputs of the sensors through the amplifier 13 to 17 and 20-22 and filters serially connected through the switch 4 to the input of the instrumental amplifier 36 (amplifier with adjustable gain). With the release of the instrumental amplifier 36 signal to 12-bit ADC 3.

Instrumental amplifier 36 allows you to adjust the amplitude of the sensor signals 5-10 and 41 with the input range of the ADC 3. In addition, the amplifier 36 serves to compensate for the DC component of the sensor signals, for which one of the inputs is energized from the first DAC 34.

The first switch 4, the ADC 36, the first and second DAC 34 and 35 are controlled by the microcontroller 2 standard tire 38, 39. Values reinforced what I and offset for each channel are passed to the microcontroller 2 from the personal computer through the channel 40. The microcontroller 2 performs initial processing of the sensor signals and then transmits the digital information from the computer through the channel 40, which includes a connection unit 37 with a personal computer, made by the scheme opto-galvanic isolation. Power to the circuit device is fed through an isolating Converter 44, which provides galvanic isolation from the power source. To monitor the health of the sensors and connecting cables the test signal supplied to the channels of all sensors, except for the blood pressure sensor 8. Channel blood pressure carries out signal processing indicator of cardiovascular activity. The signal from the pressure sensor 8 is fed to the input of the pre-amplifier 19 through the filter 33 and the signal amplifier 22 to the first switch 4 and the microcontroller 2 for further processing. Channel motor activity (tremor) performs signal processing of the index of physical activity. The signal from the sensor 10 via the amplifier 16 and the active filter of the second order 29 passes to the microcontroller 2 for further processing. Channel plethysmogram performs signal processing indicator of cardiovascular activity. The signal from the sensor 9 is supplied via the amplifier 15, the active filter 27 of the second order, is held for further processing at the micro is ontroller 2. Additional universal channel allows connection of the sensor variable component of the galvanic skin response or piezoelectric sensor (sensor 41 face mimics, additional sensor plethysmogram, motor activity). The choice of the type of sensor can be performed by the operator using the service program directly in the process or before conducting the test. The signal from the selected sensor is supplied to the second electronic switch 42 and is further divided into two sub-channel, each of which is adapted for processing the signal from the corresponding sensor. The signal from the piezoelectric sensor, for example sensor 41 face mimics, processed in the first subchannel. He entered the pre-amplifier 17, which negotiates the high resistance of the sensor and the input circuits of the subsequent stages. Next, the signal passes through the active filter of the second order 30 and flows through the switches 43 and 4 for further processing. The second sub-channel is designed for processing the signal from the sensor, galvanic skin response. A voltage proportional to the resistance of the skin, going through the pre-amplifier 18, the active filter 31 of the low frequency of the first order, the signal amplifier 21, through the active filter 32 of the low frequency second order, third and first switches 43 and 4 for Alina processing.

Before switching the device on different parts of the body subject to registration physiological parameters put the appropriate sensors. Sensor, galvanic skin response 7 made in the form of two electrodes fixed on the index ring fingers. Sensors thoracic and abdominal breathing 6 and 5 strengthen on the chest and diaphragm. Plethysmographically sensor 9 is fixed on the middle finger. The movement sensor 10 strengthen under the chair, on which sits the test. Blood pressure sensor 8 place the hand over the vessel.

In the process of testing a subject after a certain period of time have a number of test questions. These questions relate inclinations, abilities, personal qualities and have a neutral, testing and control nature. Upon presentation of test questions, the answer to which does not correspond to the real situation, there is an emotional surge that after a certain short period of time is expressed in a sudden change of indicators. Measurements are made continuously and information about them is passed through the processing circuit to the microcontroller 2 and then to a personal computer. Personal computer manufactures the accumulation and processing of data and in compliance with a set of programs is Oh prints a preliminary conclusion and PolyGram.

The microcontroller 2 receiving and processing information from a personal computer according to the Protocol exchange. In addition, it provides storage of the values of gain and offset for each measuring channel, power control, the choice of the measuring channel, the results of the conversion and the issuance of the conversion results in a personal computer, as well as the formation of the test signal for testing the sensors and wires.

A personal computer is implemented as a software package, integrated into a single environment and provides the following functions: input signals controlled physiological processes and their visualization (or their parameters) in the form of graphs in real time, save the entered data for further work with them, viewing the charts (the stored data in graphical form in dialog mode, output to printer received the charts (in whole or fragmentary), simultaneous review of the charts of the two surveys, keyboard input additional markers in the real-time system, the mathematical processing of the data and the formation of an examination report in tabular the form, review, correction and printing the generated Protocol, creating a library of questionnaires and the agricultural use in the process of conducting psychophysiological examination, automatic identification of issues, with the greatest emotional significance for the subject, the writing and subsequent editing by the operator of the conclusion of the survey, the print output.

Industrial applicability

In the scheme of the device used standard elements are known and described in the patent literature sensors (except disclosed here original) and blocks. All the circuit elements of the device are manufactured industrially. The galvanic decoupling unit made by OPTRON channel AD-FD, as the microcontroller used model 6000 series CAMBASIC. For professionals will not be a problem to make and use the device with regard to the information above.

Therefore, the invention meets the requirement of industrial applicability.

1. Device monitoring and evaluation of physiological processes, containing a microcontroller, an analog-to-digital Converter (ADC), the first switch, sensors thoracic respiration, abdominal respiration, galvanic skin response, blood pressure, cardiovascular activity, movement sensor, power supply, pre-amplifiers, signal amplifiers, filters, first and second digital to analog converters (DAC), instrumental amp and interfacing with personal computers is om, equipped with galvanic isolation, with the sensors through the amplifiers and filters connected to respective inputs of the first switch, the control input of which is connected with the first bus of the microcontroller, and the output to the first input of the instrumental amplifier, the second input of the instrumental amplifier connected to the output of the first DAC, the third input to the output of the second DAC, and the output to the ADC input, the inputs of the first and second DAC and the group of inputs-outputs of the ADC are connected with the second bus of the microcontroller, the third bus which is connected with the connection unit with a personal computer, characterized in that it introduced an additional channel connectivity to input sensor face mimics, sensor peoplemistakenly or sensor of the variable component of galvanic skin response, including the second electronic switch, the outputs of which are connected the first and second subchannels processing signals from the respective sensor, while the first sub-channel includes a series-connected amplifier and the filter, the second pre-amplifier, a filter, a signal amplifier and an additional filter, and the outputs of subchannels through the third electronic switch, a managing input coupled to the microcontroller, is connected to the input of the first switch.

2. The device according to claim 1, characterized those who, the sensor face mimics includes elastic straps with adjustable length, ending with snaps for attaching the sensor on the head of the examinee, and a cap having a possibility to contact with the head of the test and through the spring to act on the button connected to the piezoelectric element, the findings of which are the output of the sensor.



 

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FIELD: medicine.

SUBSTANCE: invention relates to medical equipment and is intended for analysing parametres of human visual system sluggishness. Device contains generator of second pulses, RS-trigger, four univibrators, unit of 10 univibrators, four analogue commutators, three resistive dividers, two OR components, unit of 10 analogue multiplexes, unit of 10 converters voltage-pulse duration, analogue multiplexor, analogue storage device, binary counter, multiplexor, register, unit of 10 OR components, unit of 10 light sources, AND component, counter, generator of millisecond pulses, display unit, unit of 10 commutators and scrambler.

EFFECT: method allows to reduce time of analysing, due to which can be applied in mass examinations or in process of testing by bicycle ergometry for evaluation of person's tiredness degree or their functional state.

5 dwg

FIELD: medicine.

SUBSTANCE: circumference with mark on it and point object moving on circumference with set rate are shown on videomonitor screen. At the moment of supposed coincidence of point object position with mark tested person stops movement of point object on circumference pressing "Stop" button. At this moment error of non-coincidence of point object and mark is calculated - time of lag error with positive sign or forestalling error with negative sign, and after set time movement of point object on circumference is recommenced. Described procedure is repeated determined number of times, after which time of person's reaction on moving object Tp is calculated by formula: where ti - i-th lag error with positive sign or forestalling error with negative sign, msec; n is number of point object stops in region of mark location.

EFFECT: method allows to increase reliability of reaction time.

6 dwg, 5 tbl, 5 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, in particular to labour hygiene and prevention of professional diseases, and can find application in selection of personnel for operator professions according to the level of psychophysical indices level. Tested person is examined by means of complex of psychophysiological procedures and Cattel test, determined are indices of brain workability, logical thinking, steadiness of nervous processes, attention, ability for prediction, operative thinking, long-term memory, rate of proceeding of thinking processes during operation with number material, as well as indices C and Q3 by Cattel test. Indices in form of ratio of number of correctly done tasks to spent time are used, and tested person is considered suitable for operator work if number of mistakes made by them while fulfilling procedures does not exceed four, than allowable values of evaluated indices.

EFFECT: method allows to evaluate professional appropriateness of tested person for operator work immediately after psychophysiological examination and select the most promising candidates for working places.

2 tbl, 1 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to physiology and psychophysiology, human ecology, and environmental geology. An image is formed of k-horizontal lines sized of less than a half of coverage width of one eye. Each line includes L symbols of width qj spaced by Δqj not exceeding qj. Groups of symbols spaced by Δpk much exceeding qj are formed. The horizontal lines are arranged so that spaces Δpk in each horizontal line are overlapped herewith forming vertical character sets. The image effects on visual system while being moved from one extreme eye coverage to another. Depth sensation between two vertical character sets is determined to detect visual sensation of direction change in depth vector in-between.

EFFECT: method extends range of products to detect new neutron networks of human cerebral cortex.

3 dwg

FIELD: medicine.

SUBSTANCE: electrodes of electric ECG potential registration are placed in zone of aorta and in zone of cardiac apex. Changes of electric potential on body in time are registered in form of diagram of ECG function. Near each electrode of ECG electric potential registration additional electrode is installed, onto which high-frequency signal from generator is supplied, and from electrodes of ECG electric potential registration modulated by fluctuations of arterial blood flow signal is obtained synchronously, said signal is amplified, converted into digital code and transmitted for rheogram registration to information processing unit, after which connection of ECG electric potential with change of pressure according to rheogram is connected in each phase, and phase peculiarities of arterial pressure change are diagnosed. Device for synchronous registration of rheogram from ECG electrodes consists of two ECG electrodes, commutator, first amplifier, first band filter, analogue-digital converter, controller, IR transmitter and information processing unit with first detector, commutator being inserted between electrodes and first amplifier, whose outlet through band filter is connected with first inlet of analogue-digital converter, whose outlet is joined to controller, whose first outlet is connected with commutator, and second outlet - with IR transmitter, connected with first detector of information processing unit. Two additional electrodes, second amplifier, second band filter, second detector and generator, switched to additional electrodes, are introduced into it, second commutator outlet is connected to inlet of second detector, whose output through second amplifier and second band filter is connected with second inlet of analogue-digital converter.

EFFECT: synchronous registration of phase characteristics of cardiac cycle and corresponding fluctuations of arterial pressure in heart vessels and aorta.

2 cl, 3 dwg

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