CN113327406B - Monitoring system for preventing test play disorder based on PPG analysis technology - Google Patents
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Abstract
The invention relates to the field of monitoring of test performance disorder, in particular to a monitoring system for preventing test performance disorder based on a PPG analysis technology, which comprises PPG signal acquisition equipment, a central processing reminding module and a background analysis processing terminal, wherein the PPG signal acquisition equipment also comprises a photoelectric sensor for acquiring a user PPG signal, a signal transmission module for transmitting the PPG signal acquired by the photoelectric sensor and a data storage module for storing the acquired signal; the photoelectric sensor also comprises a light emitting diode and a photoelectric receiving diode, and the central processing reminding module comprises a signal receiver, an embedded analysis module, a data interaction module, a voice guidance module and a comprehensive analysis module for playing states; the invention realizes the targeted guidance adjustment based on PPG signal monitoring and data feedback, so that the monitoring data is more accurate and representative, the abnormal phenomenon of the test exertion of an examinee is effectively prevented, and the practical value of the product is greatly improved.
Description
Technical Field
The invention relates to the technical field of monitoring of test exertion disorder, in particular to a monitoring system for preventing test exertion disorder based on a PPG analysis technology.
Background
Many people learn well at ordinary times, but the examination score does not even reach the ordinary level, and in important examinations such as college entrance examination, the situation appears, and the student can be abandoned for life because of playing the examination that is not ideal in the study, and in student's life, the examination is indispensable, is the reference and the adjustment means of self-level detection and teacher teaching guidance, and some students learn well at ordinary times, fear that the examination plays abnormal, influence the measurement of self-level, influence the corresponding teaching plan of teacher, can't realize student's specific study improvement, and at present, do not have the product or the system that is used for promoting the examination play level of examinee and preventing the examination from playing abnormal in market yet.
Furthermore, the patent inquires about an invention patent of a examination room monitoring device based on the technique of measuring light volume change and tracing, which is mainly applied to the psychological state monitoring of an examinee in an examination, and a noninvasive detection method for detecting the blood volume change in living tissues by means of photoelectricity is provided, when a light beam with a certain wavelength irradiates the surface of finger skin, the contraction and expansion of blood vessels can influence the transmission of light or the reflection of light in each heartbeat; when light passes through skin tissues and then is reflected to the photosensitive sensor, the light is attenuated to a certain extent, when the light is converted into an electric signal, the absorption of the light by arteries is changed, the absorption of the light by other tissues is basically unchanged, and the obtained signals can be divided into Direct Current (DC) signals and Alternating Current (AC) signals; the AC signal is extracted to reflect the blood flow characteristic, so that the blood flow characteristic is greatly helpful for relieving stress and mood disorder of the examinee; the patent does not relate to or suggest the test exertion of the examinee and the improvement of the test exertion level, and therefore, a monitoring system for preventing the test exertion disorder based on a PPG analysis technology is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, solve the problems, and provide a monitoring system for preventing the abnormal exertion of examination based on a PPG analysis technology.
The aim of the invention is achieved by the following measures:
a monitoring system for preventing test play disorder based on PPG analysis technology comprises PPG signal acquisition equipment, a central processing reminding module and a background analysis processing terminal;
the PPG signal acquisition equipment is worn by a user, and acquires photoelectric signal data parameters of electrocardiosignals, pulse waves and blood oxygen concentration of the user by using a PPG technology;
the central processing reminding module is used for receiving the photoelectric data signals transmitted by the PPG signal acquisition equipment, transmitting the preprocessed photoelectric signal data to the background analysis processing terminal after preliminary analysis processing, immediately analyzing and evaluating the examination state of the examinee, and simultaneously intervening and reminding the examinee when the examination state is bad, and further generating an analysis report of the whole examination playing state after the analysis processing in the ending link;
the background analysis processing terminal is used for receiving the photoelectric signal data preprocessed by the central processing reminding module, and further utilizing a core algorithm to induce the play abnormality factors into three models of atmosphere, questions and pressure; the study model participates in the operation factors including examination subjects, examination time length, emotion values, pressure states and AC signals, the system judges which play abnormality factor the current examinee is in according to the examinee examination state model, and then carries out targeted scheme intervention through voice to enable the examinee to enter an optimal examination state;
the PPG signal acquisition equipment further comprises a photoelectric sensor for acquiring a PPG signal of a user, a signal transmission module for transmitting the PPG signal acquired by the photoelectric sensor and a data storage module for storing the acquired signal; the photoelectric sensor also comprises a light emitting diode for emitting a light beam signal to irradiate human tissues to be detected and a photoelectric receiving diode for receiving photoelectric signal data reflected by blood;
the central processing reminding module comprises a signal receiver for receiving PPG signal data of the signal transmission module, an embedded analysis module for preprocessing and analyzing the PPG signal, a data interaction module for carrying out data transmission on the preprocessed PPG signal data, a voice guidance module for carrying out targeted intervention and reminding on the state of a user, and a exertion state comprehensive analysis module for imaging the adjustment result of the state of the user and monitoring the PPG signal;
the background analysis processing terminal comprises an analysis transition module for receiving the PPG signal data transmitted by the data interaction module, a PPG algorithm module for carrying out core algorithm processing on the signal data received by the analysis transition module, a exertion state abnormality module for grading and classifying the exertion state of a user examination based on the processing data of the PPG algorithm module, and a PPG waveform parameter module for storing and displaying and checking based on cloud data and data imaging; the development state abnormality module further comprises an examination atmosphere abnormality module for generating an abnormal development PPG signal data state change of an examinee due to examination atmosphere, an examination question abnormality module for generating an abnormal development PPG signal data state change of the examinee due to examination questions and an examination pressure abnormality module for generating an abnormal development PPG signal data state change due to the pressure of an examination environment and self psychological factors;
the core algorithm formula of the PPG algorithm module is as follows:
calculating heart rate parameters:
HR＝FS*60/n
HR: heart rate; FS: sampling frequency;
n: average interval point number between peaks in a section of PPG signal;
calculating blood oxygen parameters:
R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
Spo2＝110-25R
spo2 blood oxygen saturation
Red light; ir infrared light; ac component; a dc direct current component;
calculating pulse parameters:
k, pulse wave waveform characteristic quantity
P m For mean arterial pressure, which is equal to the mean value P of the pulse pressure P (t) in a cardiac cycle s ，P d Systolic and diastolic, respectively;
calculating emotional state parameters:
X(r)＝[d i (r)] 2 ；
r: a photoelectric signal parameter; t: sampling period; n: the number of sampling points;
d i (r): a user mood swings value; x (r) is d i (r) square;
y (r): user emotional state value, 0-100;
t: the time difference between the current time and the time of starting the examination is in seconds;
when t <120, Y (r) > = 60, the examinee is in tension due to the atmosphere of the examination room, so that the examination state is abnormal, and the device can lead the examinee to relax the body and recover the relaxed state in a deep breathing way through voice;
when t > =120 and Y (r) >80, the examinee gets the questions in the examination to cause emotional tension, so that the examination state is abnormal, and the device guides the examinee to relax the body by voice so as to make the questions at the later time;
when t > =120, y (r) > =60 and y (r) <=80, the examinee is in tension due to own pressure, so that the examination state is abnormal, the device guides the examinee to relax the body through voice, does not excessively execute a certain question or examination result of the test question, and works best, mainly, exercises are usually added at ordinary times, and the examinee believes himself;
the algorithm processing is carried out according to the collected data of r, T and N, so that the examination state of the user in the aspects of atmosphere, questions and pressure is analyzed based on X (r), Y (r) and T, and excitation means in different modes are adopted to carry out excitation adjustment on the user, so that the examinee can enter an optimal examination state.
Preferably, the PPG signal acquisition equipment is an intelligent watch, so that the intelligent watch is more convenient to use, a user only needs to wear the equipment with one hand when using the intelligent watch, any examination and activity process of the intelligent watch are not influenced, and the intelligent watch is worn like a common watch without any uncomfortable feeling due to the fact that the intelligent watch adopts photoelectric acquisition signals.
Further preferably, the signal transmission module of the PPG signal acquisition device is a bluetooth transmission protocol
Further preferably, the signal transmission module is also connected with a Bluetooth earphone, and an examinee can simulate an examination in a single environment and train by using the device with a voice reminding function; the Bluetooth headset can be worn for training in a multi-person environment or a noisy environment, and is connected with the watch by adopting a Bluetooth transmission protocol.
Preferably, the voice guidance module further comprises an atmosphere guidance module for judging that the examinee is in an examination atmosphere abnormal state level and performing targeted excitation and adjustment based on the examinee PPG signal data, a question guidance module for judging that the examinee is in an examination question abnormal state level and performing targeted excitation and adjustment based on the examinee PPG signal data, and a pressure guidance module for judging that the examinee is in an examination pressure abnormal state level and performing targeted excitation and adjustment based on the examinee PPG signal data, wherein the pressure guidance module corresponds to one intervention of the examination state in a voice guidance mode, and different intervention instructions are performed in different states, so that the examinee state is gradually adjusted to be optimal.
Preferably, the photoelectric sensor is mounted on the bottom of the inner side of the intelligent watch in a clamping manner, and the photoelectric sensor contacts with the bottom surface of the protruding intelligent watch and the human tissue surface.
Further preferably, a lithium battery for supplying power to the acquisition device component is further arranged in the intelligent watch.
Preferably, the exertion state comprehensive analysis module comprises a time parameter for an examinee to wear a smart watch for monitoring the examination state, a PPG signal response waveform chart for presenting the examinee PPG signal monitoring and adjusting response in a full period for convenient viewing, a guidance analysis ladder chart for participating the voice guidance module in the adjustment of the exertion abnormal state and the presentation of the intervention result, and an examination comprehensive analysis module for carrying out data sorting analysis and suggestion evaluation on the examinee use and algorithm processing result.
The beneficial effects of the invention are as follows:
1. according to the invention, the intelligent watch is worn by the examinee in an examination preparation state, the intelligent watch is more convenient to use, a user only needs to wear the intelligent watch by one hand when using the intelligent watch, any examination and activity processes are not influenced, the intelligent watch is worn like a common watch by adopting the photoelectric acquisition signals, the intelligent watch can be worn for a long time, the human tissue to be detected is covered and attached on the surface of the photoelectric sensor, the light emitting diode emits light beams to irradiate the human tissue to be detected, the light signals reflected by blood are received by the photoelectric receiving diode, the electrocardiosignal, pulse wave, blood oxygen concentration and other PPG signal data of the human tissue to be detected are obtained in real time, and then recorded on the storage module, the collected real-time PPG signal data of the examinee in the examination state is transmitted to the central processing reminding module through the signal transmission module, and the Bluetooth transmission protocol can be adopted to acquire the PPG signal more accurately and effectively, so that the monitoring data of the examinee in the examination state is more accurate and representative;
2. according to the invention, the PPG analysis technology is used in the normal simulation test, the optimal state of the test of the examinee in the normal test is realized through the intervention of the normal simulation test exercise, and psychological hints are automatically generated when the test is difficult, so that the purposes of improving the test state and preventing the test from giving play to disorder are achieved; the artificial intelligence deep learning technology is utilized to carry out multidimensional deep analysis on the examination state of the examinee, and the comprehensive analysis module of the state is used for comprehensively reflecting the imaging of the user state regulation result and the PPG signal monitoring, so that the examinee can conveniently and intuitively and clearly see the abnormality and regulation guiding condition of the examinee in the examination state, and the practicability and the high efficiency of the product are greatly improved;
3. according to the PPG data acquisition equipment, PPG signal values are sent to the signal receiver of the central processing reminding module through the signal transmission module, the PPG signal values are preliminarily analyzed through the embedded analysis module and then are uploaded to the background analysis processing terminal through network transmission of the data interaction module, the examination state of an examinee is immediately analyzed and evaluated, meanwhile, intervention and reminding are carried out when the state is poor, the central processing reminding module provides a voice prompt function, reminding and guidance opinion are carried out when the user state is poor, after the examinee wears the intelligent watch to carry out an analog examination, the system prompts state analysis in the examination through the equipment, the examinee wears the intelligent watch for a period of time, the artificial intelligent deep learning center generates a whole examination playing state analysis report through long-time analysis learning, and the monitoring regulation guidance of the equipment for preventing the abnormal phenomenon of the examinee based on the PPG analysis technology is greatly improved;
4. the analysis transition module receives a preprocessing analysis PPG signal transmitted by the data interaction module, then transmits the signal to the PPG algorithm module, the PPG algorithm module carries out core algorithm processing analysis on the received PPG signal, then analyzes learning situation classification of the user playing abreast by using the core algorithm, the playing state abreast module comprises an examination atmosphere abreast module, an examination question abreast module and an examination pressure abreast module, the playing state abreast module transmits data to the data interaction module of the central processing reminding module through the algorithm data result value, the data interaction module transmits the result value of the core algorithm to the voice guidance module, then carries out grading classification and triggers voice guidance to carry out grading guidance, and the PPG waveform parameter module stores and displays and checks based on cloud data, so that the follow-up data calling and integrated classification analysis can be realized;
5. the voice guidance module comprises an atmosphere guidance module corresponding to the examination atmosphere disorder module, a question generation guidance module corresponding to the examination question generation disorder module and a pressure guidance module corresponding to the examination pressure disorder module.
Drawings
FIG. 1 is a block diagram of the overall structural principle of the present invention;
fig. 2 is an effect display diagram of the performance status analysis module of the present invention.
Reference numerals in the drawings: the system comprises a 1-PPG signal acquisition device, a 11-photoelectric sensor, a 12-signal transmission module, a 13-data storage module, a 14-light emitting diode, a 15-photoelectric receiving diode, a 16-Bluetooth earphone, a 17-smart watch, a 18-lithium battery, a 2-central processing reminding module, a 21-signal receiver, a 22-embedded analysis module, a 23-data interaction module, a 24-voice guidance module, a 25-play state comprehensive analysis module, a 251-time parameter, a 252-PPG signal response waveform diagram, a 253-guidance analysis ladder diagram, a 254-test comprehensive analysis module, a 26-atmosphere guidance module, a 27-question generation guidance module, a 28-pressure guidance module, a 3-background analysis processing terminal, a 31-analysis transition module, a 32-PPG algorithm module, a 33-play state abnormality module, a 34-PPG waveform parameter module, a 35-test atmosphere abnormality module, a 36-test question generation abnormality module and a 37-pressure abnormality module.
Detailed Description
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: 1-2, a monitoring system for preventing test play disorder based on PPG analysis technology comprises a PPG signal acquisition device, a central processing reminding module 2 and a background analysis processing terminal 3;
the PPG signal acquisition equipment 1 is worn by a user, and acquires photoelectric signal data parameters such as electrocardiosignals, pulse waves, blood oxygen concentration and the like of the user by using a PPG technology;
PPG, also known as Photoplethysmography (PPG), is a non-invasive detection method that detects blood volume changes in living tissue by photoelectric means, where, when a light beam of a certain wavelength is irradiated to the surface of finger-end skin, the contraction and expansion of blood vessels each time a heartbeat occurs, both affect the transmission of light (e.g., in transmitted PPG, light passing through the fingertip) or the reflection of light (e.g., in reflected PPG, light from near the wrist surface); when light passes through skin tissue and then is reflected to the photosensitive sensor, light can be attenuated to a certain extent, light absorption of muscles, bones, veins and other connecting tissues is basically unchanged (provided that a measuring part does not move greatly), but arteries are different, light absorption naturally changes due to pulsation of blood in the arteries, when the light is converted into an electric signal, the light absorption of other tissues is basically unchanged due to the change of the light absorption of the arteries, the obtained signals can be divided into Direct Current (DC) signals and Alternating Current (AC) signals, and the characteristics of blood flow can be reflected by extracting the AC signals.
The central processing reminding module 2 is used for receiving the photoelectric data signals transmitted by the PPG signal acquisition equipment, transmitting the preprocessed photoelectric signal data to the background analysis processing terminal after preliminary analysis processing, immediately analyzing and evaluating the examination state of the examinee, and simultaneously intervening and reminding the examinee when the examination state is poor, so that an analysis report of the whole examination playing state is generated after the analysis processing in the ending link;
the background analysis processing terminal 3 is used for receiving the photoelectric signal data preprocessed by the central processing reminding module, and further utilizing a core algorithm to induce the play abnormality factors into three models of atmosphere, questions and pressure; the study model participates in the operation factors such as examination subjects, examination time length, emotion values, pressure states, AC signals and the like, the system judges which play abnormality factor the current examinee is in according to the examinee examination state model, and then the examinee enters the optimal examination state by carrying out targeted scheme intervention through voice.
The PPG signal acquisition device 1 further comprises a photosensor 11 for acquiring a PPG signal of a user, a signal transmission module 12 for transmitting the PPG signal acquired by the photosensor, and a data storage module 13 for storing the acquired signal; the photoelectric sensor 11 further comprises a light emitting diode 14 for emitting light beam signals to irradiate human tissues to be detected and a photoelectric receiving diode 15 for receiving photoelectric signal data reflected by blood, the photoelectric sensor 11 is mounted on the bottom of the inner side of the intelligent watch 17 in a clamping mode, the photoelectric sensor 11 contacts with the bottom surface of the protruding intelligent watch 17 and the human tissues, and a lithium battery 18 for supplying power to the acquisition equipment assembly is further arranged in the intelligent watch 17.
The PPG signal acquisition device 1 is an intelligent watch 17, is more convenient to use, a user only needs to wear the device with one hand when using the device, does not influence any examination and activity process of the device, adopts photoelectric acquisition signals, does not feel uncomfortable like a common watch when being worn, can be worn for a long time, a signal transmission module 12 of the PPG signal acquisition device 1 is a Bluetooth transmission protocol, the signal transmission module 12 is also connected with a Bluetooth headset 16, and an examinee can simulate an examination in a single environment and can train by using the device with a voice reminding function; the Bluetooth headset can be worn for training in a multi-person environment or a noisy environment, and is connected with the watch by adopting a Bluetooth transmission protocol.
Through setting up PPG signal acquisition equipment, under the examination readiness of examinee entering, wear intelligent wrist-watch, it is more convenient to use, only need the single hand wear equipment during the user use can, do not influence any examination and activity process thereof, adopt photoelectric acquisition signal, wear and wear like ordinary wrist-watch and do not have any uncomfortable feeling, can wear for a long time, during the use, cover the human tissue that awaits measuring and attach at photoelectric sensor's surface, send the light beam by emitting diode and shine the human tissue that awaits measuring, the optical signal after the blood reflection is received by photodiode, obtain the heart signal data such as heart signal of human tissue that awaits measuring in real time, pulse wave and blood oxygen concentration, and then record on the storage module, then pass through signal transmission module with the PPG signal data transmission of acquisition in real time of examinee under examination and give central processing warning module, signal transmission module can adopt bluetooth transmission protocol, gather the PPG signal more accurate and effective, make the monitoring data of examinee under examination state more accurate and representative.
The PPG analysis technology is used in the normal simulation test, the optimal state of the test of the examinee in the normal test is realized through the intervention of the normal simulation test exercise, and psychological hints can be automatically generated when the test is difficult, so that the purposes of improving the test state and preventing the test from giving play to disorder are achieved; the artificial intelligence deep learning technology is utilized to carry out multidimensional deep analysis on the examination state of the examinee, the comprehensive analysis module of the state is used for comprehensively reflecting the imaging of the user state adjusting result and the PPG signal monitoring, the examinee can conveniently and intuitively and clearly see the abnormality and the adjusting instruction condition of the examinee in the examination state, and the practicability and the high efficiency of the product are greatly improved.
The central processing reminding module 2 comprises a signal receiver 21 for receiving signal transmission module PPG signal data, an embedded analysis module 22 for carrying out preprocessing analysis on the PPG signal, a data interaction module 23 for carrying out data transmission on the preprocessed PPG signal data, a voice guidance module 24 for carrying out targeted intervention and reminding on a user state and a play state comprehensive analysis module 25 for imaging and monitoring the PPG signal on the basis of the user state adjustment result, the voice guidance module 24 further comprises an atmosphere guidance module 26 for judging that the examinee is in an examination atmosphere abnormal state level and carrying out targeted excitation and adjustment on the basis of the examinee PPG signal data, a question guidance module 27 for judging that the examinee is in an examination question abnormal state level and carrying out targeted excitation and adjustment on the basis of the examinee PPG signal data, a pressure guidance module 28 for judging that the examinee is in an examination pressure abnormal state level and carrying out targeted excitation and adjustment, and different intervention instructions are carried out on different states corresponding to one intervention of examination states in a voice guidance mode, so that the examinee state is gradually optimized.
The PPG data acquisition equipment transmits PPG signal values to a signal receiver of the central processing reminding module through the signal transmission module, the pre-processed photoelectric signal values are uploaded to the background analysis processing terminal through network transmission of the data interaction module after preliminary analysis by the embedded analysis module, and the examination state of the examinee is immediately analyzed and evaluated, meanwhile, intervention and reminding are carried out when the state is poor, the central processing reminding module provides a voice prompt function, reminding and guidance opinion are carried out when the user state is poor, after the examinee wears the intelligent watch to carry out a simulation examination, the system can prompt state analysis in the examination through the equipment, the examinee wears the intelligent watch for a period of time, after long-time analysis and study, the artificial intelligent deep learning center generates a whole examination exertion state analysis report after analysis processing, and monitoring adjustment guidance of the examinee on the exertion phenomenon of the prevention of the examinee based on the PPG analysis technology is greatly improved.
The exertion state comprehensive analysis module 25 comprises a time parameter 251 for the examinee to wear the smart watch for monitoring the examination state, a PPG signal response waveform diagram 252 for presenting the examinee PPG signal monitoring and adjusting response for a whole period of time for convenient viewing, a guidance analysis ladder diagram 253 for participating the voice guidance module in the adjustment of the exertion abnormal state and the presentation of the intervention result, and an examination comprehensive analysis module 254 for the examination comprehensive analysis and the suggestion evaluation of the examinee using and algorithm processing result data.
The background analysis processing terminal 3 comprises an analysis transition module 31 for receiving the PPG signal data transmitted by the data interaction module, a PPG algorithm module 32 for carrying out core algorithm processing on the signal data received by the analysis transition module, a exertion state abnormality module 33 for grading and classifying the exertion state of the user examination based on the processing data of the PPG algorithm module, and a PPG waveform parameter module 34 for storing and displaying and viewing based on cloud data and data imaging; wherein the development status aberration module 33 further comprises an examination atmosphere aberration module 35 for generating a development aberration PPG signal data status change of the examinee due to examination atmosphere, an examination question aberration module 36 for generating a development aberration PPG signal data status change of the examinee due to examination questions, and an examination pressure aberration module 37 for generating a development aberration PPG signal data status change due to examination environment, self psychological and the like;
the core algorithm formula of the PPG algorithm module is as follows:
calculating heart rate parameters:
HR＝FS*60/n
HR: heart rate; FS: sampling frequency;
n: average interval point number between peaks in a section of PPG signal;
calculating blood oxygen parameters:
R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
Spo2＝110-25R
spo2 blood oxygen saturation
Red light; ir infrared light; ac component; a dc direct current component;
calculating pulse parameters:
k, pulse wave waveform characteristic quantity
P m For mean arterial pressure, which is equal to the mean value P of the pulse pressure P (t) in a cardiac cycle s ，P d Systolic and diastolic, respectively;
calculating emotional state parameters:
X(r)＝[d i (r)] 2 ；
r: a photoelectric signal parameter; t: sampling period; n: the number of sampling points;
d i (r): a user mood swings value; x (r) is d i (r) square;
y (r): user emotional state value, 0-100;
t: the time difference between the current time and the time of starting the examination is in seconds;
when t <120, Y (r) > = 60, the examinee is in tension due to the atmosphere of the examination room, so that the examination state is abnormal, and the device can relax the body and recover the relaxed state by guiding the examinee through voice in a deep breathing mode;
when t > =120 and Y (r) >80, the examinee gets the questions in the examination to cause emotional tension, so that the examination state is abnormal, and the device guides the examinee to relax the body by voice so as to make the questions at the later time;
when t > =120, y (r) > =60 and y (r) <=80, the examinee is in tension due to own pressure, so that the examination state is abnormal, the device guides the examinee to relax the body through voice, the examinee does not excessively execute the examination result, and the examinee works best, and mainly, the examinee is usually trained;
the method comprises the steps of carrying out algorithm processing according to data acquired by r, T, N and the like, analyzing examination states of users in the aspects of atmosphere, questions, pressure and the like based on X (r), Y (r) and T, and carrying out excitation adjustment on the users by adopting excitation means in different modes so as to enable examinees to enter an optimal examination state.
The analysis transition module 31 receives the preprocessing analysis PPG signal transmitted by the data interaction module 23, then transmits the signal to the PPG algorithm module 32, the PPG algorithm module 32 carries out core algorithm processing analysis on the received PPG signal, then uses the core algorithm to analyze learning situation classification of the user playing abreast, the playing state abreast module comprises an examination atmosphere abreast module 35, an examination question abreast module 36 and an examination pressure abreast module 37, the playing state abreast module 33 transmits data to the data interaction module 23 of the central processing reminding module 2 through algorithm data result values, the data interaction module 23 transmits the result value of the core algorithm to the voice guidance module 24, then carries out grading classification and triggering voice guidance to carry out grading guidance, and then the PPG waveform parameter module stores and displays and checks based on cloud data, so that data calling and integrated classification analysis of subsequent links can be realized.
The voice guidance module 24 comprises an atmosphere guidance module 26 corresponding to the examination atmosphere disorder module, a question generation guidance module 27 corresponding to the examination question generation disorder module and a pressure guidance module 28 corresponding to the examination pressure disorder module, and the invention monitors the real-time PPG signal of the examinee in the examination state, analyzes and classifies the PPG signal in real time through a core algorithm, and then carries out targeted voice guidance adjustment stimulation to enable the examinee to enter the optimal examination state, exert normal or abnormal level, and greatly improve the practical value of the product.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present invention can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. A monitoring system for preventing test play disorder based on PPG analysis technology is characterized in that: the system comprises PPG signal acquisition equipment (1), a central processing reminding module (2) and a background analysis processing terminal (3);
the PPG signal acquisition equipment (1) is worn by a user, and acquires photoelectric signal data parameters of electrocardiosignals, pulse waves and blood oxygen concentration of the user by using a PPG technology;
the central processing reminding module (2) is used for receiving the photoelectric data signals transmitted by the PPG signal acquisition equipment, transmitting the preprocessed photoelectric signal data to the background analysis processing terminal after preliminary analysis processing, immediately analyzing and evaluating the examination state of an examinee, and simultaneously intervening and reminding the examinee when the examination state is bad, and further generating an analysis report of the whole examination exertion state after the analysis processing in an ending link;
the background analysis processing terminal (3) is used for receiving the photoelectric signal data preprocessed by the central processing reminding module, and further utilizing a core algorithm to induce the play abnormality factors into three models of atmosphere, questions and pressure; the study model participates in the operation factors including examination subjects, examination time length, emotion values, pressure states and AC signals, the system judges which play abnormality factor the current examinee is in according to the examinee examination state model, and then carries out targeted scheme intervention through voice to enable the examinee to enter an optimal examination state;
the PPG signal acquisition device (1) further comprises a photoelectric sensor (11) for acquiring a PPG signal of a user, a signal transmission module (12) for transmitting the PPG signal acquired by the photoelectric sensor, and a data storage module (13) for storing the acquired signal; wherein the photoelectric sensor (11) further comprises a light emitting diode (14) for emitting a light beam signal to irradiate human tissue to be detected and a photoelectric receiving diode (15) for receiving photoelectric signal data after blood reflection;
the central processing reminding module (2) comprises a signal receiver (21) for receiving PPG signal data of the signal transmission module, an embedded analysis module (22) for carrying out preprocessing analysis on the PPG signal, a data interaction module (23) for carrying out data transmission on the preprocessed PPG signal data, a voice guidance module (24) for carrying out targeted intervention and reminding on the state of a user, and a play state comprehensive analysis module (25) for imaging and monitoring the PPG signal according to the adjustment result of the state of the user;
the background analysis processing terminal (3) comprises an analysis transition module (31) for receiving the PPG signal data transmitted by the data interaction module, a PPG algorithm module (32) for carrying out core algorithm processing on the signal data received by the analysis transition module, a exertion state abnormality module (33) for grading and classifying the exertion state of a user examination based on the processing data of the PPG algorithm module, and a PPG waveform parameter module (34) for storing and displaying and checking based on cloud data; the exertion state abnormality module (33) further comprises an examination atmosphere abnormality module (35) for generating a exertion abnormality PPG signal data state change of an examinee due to examination atmosphere, an examination question abnormality module (36) for generating a exertion abnormality PPG signal data state change of the examinee due to examination questions, and an examination pressure abnormality module (37) for generating a exertion abnormality PPG signal data state change due to examination environment and self psychological pressure;
the core algorithm formula of the PPG algorithm module is as follows:
calculating heart rate parameters:
HR＝FS*60/n
HR: heart rate; FS: sampling frequency;
n: average interval point number between peaks in a section of PPG signal;
calculating blood oxygen parameters:
R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
Spo2＝110-25R
spo2 blood oxygen saturation
Red light; ir infrared light; ac component; a dc direct current component;
calculating pulse parameters:
k, pulse wave waveform characteristic quantity
P m For mean arterial pressure, which is equal to the mean value of the pulse pressure P (t) in a cardiac cycle
P s ，P d Systolic and diastolic, respectively;
calculating emotional state parameters:
X(r)＝[d i (r)] 2 ；
r: a photoelectric signal parameter; t: sampling period; n: the number of sampling points;
d i (r): a user mood swings value; x (r) is d i (r) square;
y (r): user emotional state value, 0-100;
t: the time difference between the current time and the time of starting the examination is in seconds;
when t <120, Y (r) > = 60, the examinee is in tension due to the atmosphere of the examination room, so that the examination state is abnormal, and the device can lead the examinee to relax the body and recover the relaxed state in a deep breathing way through voice;
when t > =120 and Y (r) >80, the examinee gets the questions in the examination to cause emotional tension, so that the examination state is abnormal, and the device guides the examinee to relax the body by voice so as to make the questions at the later time;
when t > =120, y (r) > =60 and y (r) <=80, the examinee is in tension due to own pressure, so that the examination state is abnormal, the device guides the examinee to relax the body through voice, the examinee does not excessively execute the examination result, and the examinee works best, and mainly, the examinee is usually trained;
the algorithm processing is carried out according to the collected data of r, T and N, so that the examination state of the user in the aspects of atmosphere, questions and pressure is analyzed based on X (r), Y (r) and T, and excitation means in different modes are adopted to carry out excitation adjustment on the user, so that the examinee can enter an optimal examination state.
2. The PPG analysis technique-based monitoring system for preventing test development malfunction of claim 1, wherein: the PPG signal acquisition device (1) is a smart watch (17).
3. The PPG analysis technique-based monitoring system for preventing test development malfunction as claimed in claim 2, wherein: the signal transmission module (12) of the PPG signal acquisition equipment (1) is a Bluetooth transmission protocol
4. A monitoring system for preventing test development aberrations based on PPG analysis techniques as claimed in claim 3, wherein: the signal transmission module (12) is also connected with a Bluetooth headset (16).
5. The PPG analysis technique-based monitoring system for preventing test development malfunction of claim 1, wherein: the voice guidance module (24) further comprises an atmosphere guidance module (26) for judging that the examinee is in an examination atmosphere abnormality state level and conducting targeted excitation and adjustment based on the examinee PPG signal data, a question guidance module (27) for judging that the examinee is in an examination question abnormality state level and conducting targeted excitation and adjustment based on the examinee PPG signal data, and a pressure guidance module (28) for judging that the examinee is in an examination pressure abnormality state level and conducting targeted excitation and adjustment based on the examinee PPG signal data.
6. The PPG analysis technique-based monitoring system for preventing test development malfunction as claimed in claim 2, wherein: the photoelectric sensor (11) is mounted on the inner bottom of the intelligent watch (17) in a clamping mode, and the photoelectric sensor (11) is in contact with the bottom surface of the protruding intelligent watch (17) and the human tissue surface.
7. The PPG analysis technique-based monitoring system for preventing test development malfunction of claim 6, wherein: and a lithium battery (18) for supplying power to the acquisition equipment assembly is further arranged in the intelligent watch (17).
8. The PPG analysis technique-based monitoring system for preventing test development malfunction of claim 1, wherein: the exertion state comprehensive analysis module (25) comprises a time parameter (251) for an examinee to wear a smart watch for monitoring the examination state, a PPG signal response waveform chart (252) for presenting the examinee PPG signal monitoring and adjusting response for a whole period of time for convenient viewing, a guidance analysis ladder chart (253) for participating the voice guidance module in the adjustment of the exertion abnormal state and the presentation of the intervention result, and an examination comprehensive analysis module (254) for carrying out data sorting analysis and advice evaluation on the examinee use and algorithm processing result.
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