WO2023097535A1 - 基于ppg分析技术预防考试发挥失常的监测系统 - Google Patents

基于ppg分析技术预防考试发挥失常的监测系统 Download PDF

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WO2023097535A1
WO2023097535A1 PCT/CN2021/134708 CN2021134708W WO2023097535A1 WO 2023097535 A1 WO2023097535 A1 WO 2023097535A1 CN 2021134708 W CN2021134708 W CN 2021134708W WO 2023097535 A1 WO2023097535 A1 WO 2023097535A1
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module
ppg
signal
analysis
abnormal
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PCT/CN2021/134708
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English (en)
French (fr)
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吕华伟
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河南省安信科技发展有限公司
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Priority to PCT/CN2021/134708 priority Critical patent/WO2023097535A1/zh
Publication of WO2023097535A1 publication Critical patent/WO2023097535A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms

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  • the invention relates to the technical field of abnormal examination performance monitoring, in particular to a monitoring system for preventing abnormal examination performance based on PPG analysis technology.
  • the patent query is the invention patent of "an examination room monitoring device based on measuring photoplethysmography technology".
  • a non-invasive detection method of change when a beam of light of a certain wavelength is irradiated on the surface of the fingertip skin, the contraction and expansion of blood vessels will affect the transmission or reflection of light every time the heart beats; when the light passes through the skin tissue and then reflects When it reaches the photosensitive sensor, the light will have a certain attenuation.
  • the purpose of the present invention is to overcome the deficiencies in the prior art, solve the above-mentioned existing problems, and provide a monitoring system based on PPG analysis technology to prevent abnormal performance of examinations.
  • the present invention is simple in structure, easy to operate, and realizes monitoring based on PPG signals.
  • the targeted guidance and adjustment of data feedback makes the monitoring data more accurate and representative, effectively prevents the abnormal performance of candidates in the exam, and greatly improves the practical value of the product.
  • the object of the present invention is achieved through the following measures:
  • a monitoring system based on PPG analysis technology to prevent abnormal performance in exams including PPG signal acquisition equipment, central processing reminder module and background analysis and processing terminal;
  • the user wears the collection device, and uses PPG technology to collect photoelectric signal data parameters such as the user's electrocardiographic signal, pulse wave and blood oxygen concentration;
  • the central processing reminder module is used to receive the photoelectric data signal transmitted by the PPG signal acquisition device, and after preliminary analysis and processing, transmit the preprocessed photoelectric signal data to the background analysis and processing terminal, and immediately analyze the examination status of the examinee Assess, and at the same time, intervene and remind candidates when they are in poor condition, and then generate an analysis report on the performance status of the entire examination after analysis and processing at the end of the link;
  • the background analysis and processing terminal is used to receive the photoelectric signal data pre-processed by the central processing reminder module, and then use the core algorithm to summarize the abnormal factors into three models: atmosphere, question, and pressure; Examination time length, emotional value, stress state, AC signal, etc., the system judges what kind of abnormal factors the current candidate is in according to the candidate's test status model, and then conducts targeted program intervention through voice to let the candidate enter the best test state;
  • the PPG signal collection device also includes a photoelectric sensor for collecting the PPG signal of the user, a signal transmission module for collecting the PPG signal by the photoelectric sensor for transmission, and a data storage module for storing the collected signal; wherein the photoelectric The sensor also includes a light-emitting diode for emitting beam signals to irradiate human tissue to be measured and a photoelectric receiving diode for receiving photoelectric signal data reflected by blood;
  • the central processing reminder module includes a signal receiver for receiving PPG signal data from the signal transmission module, an embedded analysis module for preprocessing and analyzing the PPG signal, and a data interaction for performing data transmission on the preprocessing PPG signal data modules, a voice guidance module for targeted intervention and reminders of user status, and a performance status comprehensive analysis module for imaging of user status adjustment results and PPG signal monitoring;
  • the background analysis and processing terminal includes an analysis transition module for receiving the data interaction module and transmitting PPG signal data, a PPG algorithm module for performing core algorithm processing on the signal data of the analysis transition module, and processing data based on the PPG algorithm module for user analysis.
  • the abnormal performance module for rating and categorizing the performance status of the exam, and the PPG waveform parameter module based on cloud data storage and data imaging display and viewing; the abnormal performance module also includes changes in the PPG signal data status caused by the abnormal performance of candidates due to the exam atmosphere Examination Atmosphere Abnormal Module, Examination Exam Exam Exam Abnormal Module, Examination Question Abnormal Module, Examination Stress Abnormal Module, PPG Signal Data State Change Due to Examination Environment and Personal Psychological Pressure ;
  • HR heart rate
  • FS sampling frequency
  • n the average interval between peaks and peaks in a PPG signal
  • Red red light Ir infrared light
  • ac alternating current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac alternating current component ac direct current component
  • P m is the mean arterial pressure, which is equal to the average value of the pulse pressure P(t) in one cardiac cycle
  • P s , P d are the systolic and diastolic blood pressure, respectively;
  • r photoelectric signal parameters
  • T sampling period
  • N number of sampling points
  • d i (r) user mood swing value
  • X(r) is the square of d i (r)
  • Y(r) user emotional state value, 0-100
  • t the time difference between the current time and the test start time, in seconds
  • the device guides the test taker to take a deep breath through voice to achieve the effect of relaxing the body and restoring the relaxed state;
  • the device guides the test taker to relax and do the next question first through voice;
  • the PPG signal acquisition device is a smart watch, which is more convenient to use.
  • the user only needs to wear the device with one hand when using it, without affecting any examination and activity process. It uses photoelectricity to collect signals and wears it like an ordinary watch. Any discomfort, it can be worn for a long time.
  • the signal transmission module of the PPG signal acquisition device is a bluetooth transmission protocol
  • the signal transmission module is also connected with a bluetooth headset, and candidates can use the device's own voice reminder function for training in a simulated test in a separate environment; in a multi-person environment or a noisy environment, they can wear a bluetooth headset for training,
  • the Bluetooth headset and the watch are connected using the Bluetooth transmission protocol.
  • the voice guidance module also includes an atmosphere guidance module for judging that the examinee is in an abnormal state of the exam atmosphere based on the PPG signal data of the examinee and performing targeted incentives and adjustments;
  • the photoelectric sensor is mounted on the inside bottom of the smart watch, and the photoelectric sensor is in contact with the protruding bottom surface of the smart watch and the human tissue surface.
  • the smart watch is also provided with a lithium battery for powering the collection device components.
  • the performance status comprehensive analysis module includes time parameters for candidates to insist on wearing a smart watch to monitor the examination status, for presenting the candidate's PPG signal monitoring and adjustment response for a full period of time for easy viewing of the PPG signal response waveform diagram, for
  • the voice guidance module participates in the guidance analysis ladder diagram for adjusting the abnormal state and presenting the intervention results, as well as the examination comprehensive analysis module for the examination candidate's use and algorithm processing result data collation analysis and suggestion evaluation.
  • the present invention by setting up the PPG signal acquisition device, when candidates enter the test preparation state, they can wear the smart watch, which is more convenient to use. The user only needs to wear the device with one hand when using it, which does not affect any test and activity process.
  • the photoelectric collection signal is worn like an ordinary watch without any discomfort, and can be worn for a long time.
  • the human tissue to be tested is covered and attached to the surface of the photoelectric sensor, and the light beam emitted by the light-emitting diode is irradiated to the human tissue to be tested.
  • the optical signal reflected by the blood is received by the photoelectric receiving diode, and the PPG signal data such as the ECG signal, pulse wave and blood oxygen concentration of the human tissue to be tested are obtained in real time, and then recorded on the storage module, and then the candidate's test status is recorded.
  • the PPG signal transmits the collected real-time PPG signal data to the central processing reminder module through the signal transmission module.
  • the signal transmission module can use the Bluetooth transmission protocol to collect PPG signals more accurately and effectively, making the monitoring data of candidates in the examination state more accurate and representative. sex;
  • the present invention uses PPG analysis technology in the usual mock exams, and through the intervention of the usual mock exam exercises, the best state of the candidates' exams can be realized during the regular exams, and psychological hints will be automatically generated when encountering exam difficulties, thereby To achieve the purpose of improving the test status and preventing abnormal performance of the test; using the deep learning technology of artificial intelligence to conduct multi-dimensional and in-depth analysis of the examinee's test status, and to use the comprehensive status analysis module to comprehensively image the user's status adjustment results and PPG signal monitoring Reflection, it is convenient for candidates to intuitively and clearly see their abnormality and adjustment guidance under the test state, which greatly improves the practicability and efficiency of the product;
  • the PPG data acquisition device of the present invention sends the PPG signal value to the signal receiver of the central processing reminder module through the signal transmission module, and passes the preprocessed photoelectric signal through the network transmission of the data interaction module after preliminary analysis by the embedded analysis module
  • the value is uploaded to the background analysis and processing terminal, and the examination status of the candidate is analyzed and evaluated immediately, and at the same time, intervention and reminders are provided when the status is not good.
  • the central processing reminder module provides voice prompts to remind and guide the user when the status is not good Opinion, when the examinee wears a smart watch for a mock exam, the system will remind the examinee of the status analysis in the exam through the device.
  • the analysis report of the performance status of the entire test is generated, which greatly improves the monitoring and adjustment guidance of the equipment based on PPG analysis technology to prevent the abnormal performance of candidates;
  • the analysis transition module of the present invention receives the preprocessing analysis PPG signal delivered by the data interaction module, and then transmits the signal to the PPG algorithm module, and the PPG algorithm module performs core algorithm processing and analysis on the received PPG signal, and then uses the core algorithm to analyze the user Classification of abnormal learning situations, and abnormal performance status module includes abnormal exam atmosphere module, abnormal test questions module and abnormal test pressure module, and then the abnormal performance status module transmits the algorithm data result value to the data interaction of the central processing reminder module module, and then the data interaction module sends the result value of the core algorithm to the voice guidance module, and then performs grading and classification and triggers voice guidance for grading guidance, and then the PPG waveform parameter module displays and views based on cloud data storage and data imaging, which can realize follow-up Link data call and integration classification analysis;
  • the voice guidance module of the present invention includes an atmosphere guidance module corresponding to the abnormal test atmosphere module, a question guidance module corresponding to the abnormal examination test question module, and a pressure test module corresponding to the abnormal test pressure module.
  • Guidance module the present invention monitors the real-time PPG signal of candidates in the test state, then performs real-time analysis and classification through the core algorithm, and then performs targeted voice guidance to adjust stimulation, so that candidates can enter the best test state and play Out of the normal or abnormal level, greatly improving the practical value of the product.
  • Fig. 1 is a flow chart diagram of the overall structure principle of the present invention
  • Fig. 2 is a diagram showing the effect of the performance status comprehensive analysis module of the present invention.
  • 1-PPG signal acquisition equipment 11-photoelectric sensor, 12-signal transmission module, 13-data storage module, 14-light-emitting diode, 15-photoelectric receiving diode, 16-Bluetooth headset, 17-smart watch, 18 -Lithium battery, 2-central processing reminder module, 21-signal receiver, 22-embedded analysis module, 23-data interaction module, 24-voice guidance module, 25-play status comprehensive analysis module, 251-time parameters, 252 -PPG signal response waveform diagram, 253-guidance analysis ladder diagram, 254-examination comprehensive analysis module, 26-atmosphere guidance module, 27-question guidance module, 28-pressure guidance module, 3-background analysis processing terminal, 31-analysis Transition module, 32-PPG algorithm module, 33-performance abnormality module, 34-PPG waveform parameter module, 35-examination atmosphere abnormality module, 36-examination questions abnormality module, 37-exam pressure abnormality module.
  • the terms “installation”, “installation”, “connection” and “connection” should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components.
  • the specific meanings of the above terms in the present invention can be understood in specific situations.
  • Embodiment 1 in conjunction with Fig. 1-Fig. 2, a kind of monitoring system based on PPG analysis technology prevents the examination from performing abnormally, including PPG signal acquisition device, 1, central processing reminder module 2 and background analysis processing terminal 3;
  • PPG signal acquisition device 1 the user wears the acquisition device, and uses PPG technology to collect photoelectric signal data parameters such as the user's electrocardiographic signal, pulse wave and blood oxygen concentration;
  • PPG also known as photoplethysmography (PPG for short)
  • PPG photoplethysmography
  • the constriction and dilation of blood vessels both affect the transmission of light (such as light passing through the fingertip in transmissive PPG) or the reflection of light (such as light from near the surface of the wrist in reflective PPG);
  • the tissue is then reflected to the photosensitive sensor, the light will have a certain attenuation, like the absorption of light by muscles, bones, veins and other connected tissues is basically unchanged (provided that the measurement site does not have a large movement), but the arteries will Different, due to the pulsation of blood in the arteries, the absorption of light will naturally change.
  • the obtained signal can be divided into direct current DC signal and alternating current AC signal, and the AC signal can be extracted to reflect the characteristics of blood flow.
  • the central processing reminder module 2 is used to receive the photoelectric data signal transmitted by the PPG signal acquisition equipment, and after preliminary analysis and processing, transmit the preprocessed photoelectric signal data to the background analysis and processing terminal, and immediately analyze and evaluate the examination status of the examinee , and at the same time intervene and remind candidates when they are in poor condition, and then generate an analysis report on the performance status of the entire test after analysis and processing at the end of the link;
  • the background analysis and processing terminal 3 is used to receive the photoelectric signal data pre-processed by the central processing reminder module, and then use the core algorithm to summarize the abnormal factors into three models: atmosphere, question, and pressure; Time length, emotional value, stress state, AC signal, etc., the system judges what kind of abnormal factors the current candidate is in according to the candidate's test status model, and then conducts targeted program intervention through voice to let the test taker enter the best test state.
  • the PPG signal acquisition device 1 also includes a photoelectric sensor 11 for collecting the user's PPG signal, a signal transmission module 12 for transmitting the PPG signal collected by the photoelectric sensor, and a data storage module 13 for storing the collected signal; wherein
  • the photoelectric sensor 11 also includes a light emitting diode 14 for emitting a beam signal to irradiate the human tissue to be measured and a photoelectric receiving diode 15 for receiving the photoelectric signal data reflected by blood, and the photoelectric sensor 11 is snap-fitted on the smart watch 17, and the photoelectric sensor 11 is in contact with the bottom surface of the protruding smart watch 17 and the human tissue surface, and the smart watch 17 is also provided with a lithium battery 18 for powering the collection device components.
  • the PPG signal acquisition device 1 is a smart watch 17, which is more convenient to use. The user only needs to wear the device with one hand when using it, which does not affect any examination and activity process. Uncomfortable and can be worn for a long time, the signal transmission module 12 of the PPG signal acquisition device 1 is a Bluetooth transmission protocol, and the signal transmission module 12 is also connected to a Bluetooth headset 16, and candidates can use this The device has its own voice reminder function for training; in a multi-person environment or a noisy environment, you can wear a Bluetooth headset for training, and the Bluetooth headset and watch are connected using the Bluetooth transmission protocol.
  • the PPG signal acquisition device By setting up the PPG signal acquisition device, it is more convenient to wear the smart watch when candidates enter the test preparation state. The user only needs to wear the device with one hand when using it, which does not affect any test and activity process.
  • the photoelectric signal is used to collect signals. It does not feel uncomfortable to wear like an ordinary watch, and can be worn for a long time.
  • the human tissue to be tested is covered and attached to the surface of the photoelectric sensor, and the light beam emitted by the light-emitting diode irradiates the human tissue to be tested.
  • the optical signal is received by the photoelectric receiving diode, and the PPG signal data such as the ECG signal, pulse wave and blood oxygen concentration of the human tissue to be tested are obtained in real time, and then recorded on the storage module, and then the PPG signal of the examinee in the test state is passed through the signal
  • the transmission module transmits the collected real-time PPG signal data to the central processing reminder module.
  • the signal transmission module can adopt the Bluetooth transmission protocol to collect PPG signals more accurately and effectively, making the monitoring data of candidates in the examination state more accurate and representative.
  • the central processing reminder module 2 includes a signal receiver 21 for receiving signal transmission module PPG signal data, an embedded analysis module 22 for preprocessing and analyzing the PPG signal, and for performing data transmission on the preprocessing PPG signal data
  • the data interaction module 23, the voice guidance module 24 for targeted intervention and reminding of the user's state, and the performance status comprehensive analysis module 25 for imaging the user's state adjustment results and PPG signal monitoring, the voice guidance module 24 also includes an atmosphere guidance module based on the examinee’s PPG signal data to determine whether the examinee is in an abnormal state of the exam atmosphere and perform targeted incentives and adjustments.
  • the question-making guidance module 27, based on the examinee’s PPG signal data judges that the examinee is in an abnormal state of exam stress and performs targeted incentives and adjustments. Intervention instructions, so that the candidate's state can be gradually adjusted to achieve the best.
  • the PPG data acquisition device sends the PPG signal value to the signal receiver of the central processing reminder module through the signal transmission module.
  • the preprocessed photoelectric signal value is uploaded to the background analysis through the network transmission of the data interaction module.
  • Processing terminal and immediately analyze and evaluate the examination status of the examinee, and at the same time intervene and remind when the status is not good. After a simulated test on the smart watch, the system will remind the examinee of the state analysis in the test through the device.
  • test performance status analysis report has greatly improved the monitoring and adjustment guidance of the equipment based on PPG analysis technology to prevent the abnormal performance of candidates.
  • the performance state comprehensive analysis module 25 includes a time parameter 251 for the examinee to insist on wearing a smart watch to monitor the examination state, a PPG signal response waveform diagram 252 for presenting the examinee's PPG signal monitoring and adjustment response for a full period of time for easy viewing, and a PPG signal response waveform diagram 252 for
  • the voice guidance module participates in the guidance analysis ladder diagram 253 for adjusting the abnormal state and presenting the intervention results, and the examination comprehensive analysis module 254 for data collation analysis and suggestion evaluation for candidates' use and algorithm processing results.
  • the background analysis and processing terminal 3 includes an analysis transition module 31 for receiving data interaction modules and transmitting PPG signal data, a PPG algorithm module 32 for performing core algorithm processing on the signal data of the analysis transition module, and processing data based on the PPG algorithm module.
  • the abnormal performance module 33 for rating and classifying the performance status of the user's exam and the PPG waveform parameter module 34 for displaying and viewing based on cloud data storage and data imaging; wherein the abnormal performance module 33 also includes the performance abnormality module 33 caused by the examination atmosphere.
  • HR heart rate
  • FS sampling frequency
  • n the average interval between peaks and peaks in a PPG signal
  • Red red light Ir infrared light
  • ac alternating current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac direct current component Red red light
  • ac alternating current component ac direct current component
  • P m is the mean arterial pressure, which is equal to the average value of the pulse pressure P(t) in one cardiac cycle
  • P s , P d are the systolic and diastolic blood pressure, respectively;
  • r photoelectric signal parameters
  • T sampling period
  • N number of sampling points
  • d i (r) user mood swing value
  • X(r) is the square of d i (r)
  • Y(r) user emotional state value, 0-100
  • t the time difference between the current time and the test start time, in seconds
  • the device guides the test taker to take a deep breath through voice to achieve the effect of relaxing the body and restoring the relaxed state;
  • the device guides the test taker to relax and do the next question first through voice;
  • the analysis transition module 31 receives the preprocessing analysis PPG signal delivered by the data interaction module 23, and then transmits the signal to the PPG algorithm module 32.
  • the PPG algorithm module 32 performs core algorithm processing and analysis on the received PPG signal, and then uses the core algorithm to analyze the user's performance Abnormal learning situations are classified, and the abnormal performance status module 33 includes an abnormal exam atmosphere module 35, an abnormal exam question module 36 and an abnormal exam pressure module 37, and then the abnormal performance status module 33 transmits the algorithm data result value to the central processing reminder
  • the data interaction module 23 of module 2 and then the data interaction module 23 sends the result value of the core algorithm to the voice guidance module 24, and then performs hierarchical classification and triggers the voice guidance to perform hierarchical guidance, and then the PPG waveform parameter module is based on cloud data storage and data Imaging display and viewing can realize data call and integrated classification analysis in subsequent links.
  • the voice guidance module 24 includes an atmosphere guidance module 26 corresponding to the abnormal test atmosphere module, a question guidance module 27 corresponding to the abnormal examination test question module, and a stress guidance module corresponding to the abnormal test stress module 28.
  • the present invention monitors the real-time PPG signal of candidates in the test state, then performs real-time analysis and classification through the core algorithm, and then performs targeted voice guidance to adjust stimulation, so that candidates can enter the best test state and play their best Normal or supernormal levels greatly enhance the practical value of this product.

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Abstract

一种基于PPG分析技术预防考试发挥失常的监测系统，包括PPG信号采集设备（1）、中央处理提醒模块（2）和后台分析处理终端（3），PPG信号采集设备（1）还包括用于采集使用者PPG信号的光电传感器（11）、用于将光电传感器（11）采集的PPG信号进行传输的信号传输模块（12）以及用于将采集信号进行存储的数据存储模块（13）；其中光电传感器（11）还包括发光二极管（14）和光电接收二极管（15），中央处理提醒模块（2）包括信号接收器（21）、嵌入式分析模块（22）、数据交互模块（23）、语音指导模块（24）以及发挥状态综合分析模块（25）；实现了基于PPG信号监测和数据反馈的针对性指导调节，使得监测数据更加准确，有效预防了考生考试发挥失常现象，大大提高了产品的实用价值。

Description

基于PPG分析技术预防考试发挥失常的监测系统 技术领域
本发明涉及考试发挥失常监测技术领域，尤其涉及到一种基于PPG分析技术预防考试发挥失常的监测系统。
背景技术
很多人平时学习不错，可是一到正规考试就发挥失常，考试成绩甚至没有达到平时水平，在高考等此类重要考试中出现这种情况，学生会因为发挥失常考不上理想学校而遗恨终身，而在学生的生涯中，考试是必不可少的，是自我水平检测和老师教学指导的参考和调节手段，一些学生平时学习很好，就怕考试发挥失常，影响自我水平的测量，影响老师相对应的教学计划，无法实现学生针对性的学习提高，而目前，市场上还没有用于提升考生考试发挥水平以及预防考试发挥失常的产品或系统。
进一步讲，专利查询“一种基于测量光体积变化描记图法技术的考场监控装置”的发明专利，其重要技术应用为考试时候对考生的心理状态监测，借光电手段在活体组织中检测血液容积变化的一种无创检测方法，当一定波长的光束照射到指端皮肤表面，每次心跳时，血管的收缩和扩张都会影响光的透射或是光的反射；当光线透过皮肤组织然后再反射到光敏传感器时，光照会有一定的衰减，当我们把光转换成电信号时，正是由于动脉对光的吸收有变化而其他组织对光的吸收基本不变，得到的信号就可以分为直流DC信号和交流AC信号；提取其中的AC信号，就能反应出血液流动的特点，用以帮助缓解考生紧张和情绪失常有很大的帮助；而该专利对保障考生考试发挥及提高考试发挥水平没有任何涉及也没有给出相应启示，为此，我们需要一种基于PPG分析技术预防考 试发挥失常的监测系统。
发明内容
本发明的目的在于克服现有技术的不足，解决上述存在的问题，而提供了一种基于PPG分析技术的预防考试发挥失常的监测系统，本发明结构简单，操作方便，实现了基于PPG信号监测和数据反馈的针对性指导调节，使得监测数据更加准确和代表性，有效了预防了考生考试发挥失常现象，大大提高了该产品的实用价值。
本发明的目的是通过如下措施来实现的：
一种基于PPG分析技术预防考试发挥失常的监测系统，包括PPG信号采集设备、中央处理提醒模块和后台分析处理终端；
所述PPG信号采集设备，使用者佩戴采集设备，利用PPG技术采集使用者的心电信号、脉搏波和血氧浓度等光电信号数据参数；
所述中央处理提醒模块，用于接收PPG信号采集设备传输的光电数据信号，经过初步分析处理后将预处理光电信号数据传输给所述后台分析处理终端，并且立即对该考生的考试状态进行分析评定，同时对考生状态不佳的时候进行干预和提醒，进而在结束环节经过分析处理生成整个考试发挥状态分析报告；
所述后台分析处理终端，用于接收中央处理提醒模块预处理的光电信号数据，进而利用核心算法将发挥失常因素归纳为氛围、生题、压力三种模型；学习模型参与运算因素有考试科目、考试时间长度、情绪值、压力状态、AC信号等，系统根据考生考试状态模型判断当前考生处于何种发挥失常因素中，然后通过语音进行针对性方案干预，让考生进入最佳考试状态；
所述PPG信号采集设备还包括用于采集使用者PPG信号的光电传感器、用 于将光电传感器采集PPG信号进行传输的信号传输模块以及用于将采集信号进行存储的数据存储模块；其中所述光电传感器还包括用于发出光束信号照射待测人体组织的发光二极管和用于接收经血液反射后光电信号数据的光电接收二极管；
所述中央处理提醒模块包括用于接收信号传输模块PPG信号数据的信号接收器、用于对PPG信号进行预处理分析的嵌入式分析模块、用于将预处理PPG信号数据进行数据传输的数据交互模块、用于对使用者状态进行针对性干预和提醒的语音指导模块以及用于对使用者状态调节结果成像和PPG信号监测的发挥状态综合分析模块；
所述后台分析处理终端包括用于接收数据交互模块传输PPG信号数据的分析过渡模块、用于将分析过渡模块进行信号数据进行核心算法处理的PPG算法模块、基于PPG算法模块处理数据进行对使用者考试发挥状态进行评级归类的发挥状态失常模块以及基于云端数据存储和数据成像展示和查看的PPG波形参数模块；其中所述发挥状态失常模块还包括由于考试氛围造成考生发挥失常PPG信号数据状态变化的考试氛围失常模块、由于考试试题较生对考生造成的发挥失常PPG信号数据状态变化的考试生题失常模块以及由于考试环境和自身心理等压力造成发挥失常PPG信号数据状态变化的考试压力失常模块；
其中所述PPG算法模块的核心算法公式为：
计算心率参数：
HR＝FS*60/n
HR：心率；FS：采样频率；
n：一段PPG信号中的峰峰之间平均间隔点数；
计算血氧参数：
R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
Spo2＝110-25R
Spo2:血氧饱和度
Red红光；Ir红外光；ac交流分量；dc直流分量；
计算脉搏参数：
Figure PCTCN2021134708-appb-000001
Figure PCTCN2021134708-appb-000002
K:脉搏波波型特征量
P m为平均动脉压，它等于一个心动周期中脉搏压力P(t)的平均值
P s，P d分别为收缩压和舒张压；
计算情绪状态参数：
Figure PCTCN2021134708-appb-000003
X(r)＝[d i(r)] 2；
Figure PCTCN2021134708-appb-000004
r：光电信号参数；T：采样周期；N：采样点的个数；
d i(r)：用户情绪波动值；X(r)为d i(r)的平方；
Y(r)：用户情绪状态值，0-100；
t：当前时间与开始考试时间的时间差，以秒为单位；
当t<120，Y(r)>＝60时，考生因考场氛围造成情绪紧张，导致考试状态失常，设备通过语音引导考生用深呼吸等方式达到放松身体恢复轻松状态的效果；
当t>＝120,Y(r)>80时，考生因考试中遇见生题而造成情绪紧张，导致考试状态失常，设备通过语音引导考生放松身体先做后面的题目；
当t>＝120,Y(r)>＝60,Y(r)<＝80时，考生因自身压力造成情绪紧张，导致考试状态失常，设备通过语音引导考生防松身体，不要过分执着于试题某一题或考试结果，尽力而为就好，主要是要平时多加练习，相信自己；
根据r、T、N等采集数据进行算法处理，从而基于X(r)、Y(r)、t分析出用户在氛围、生题、压力等因素方面的考试状态，从而采取不同方式的激励手段对用户进行激励调节，让考生进入最佳考试状态。
优选的，所述PPG信号采集设备为智能手表，使用更方便，用户使用时只需单手佩戴设备即可，不影响其任何考试和活动过程，采用光电采集信号，佩戴起来像普通手表一样没有任何不舒适感，可以长时间佩戴。
进一步优选的，所述PPG信号采集设备的信号传输模块为蓝牙传输协议
进一步优选的，所述信号传输模块还连接有蓝牙耳机，考生在单独环境下模拟考试，可以使用该设备自有语音提醒功能进行训练；在多人环境或嘈杂环境下可以佩戴蓝牙耳机进行训练，蓝牙耳机与手表采用蓝牙传输协议连接。
优选的，所述语音指导模块还包括基于考生PPG信号数据判断考生处于考试氛围失常状态等级并进行针对性激励和调节的氛围指导模块、基于考生PPG信号数据判断考生处于考试生题失常状态等级并进行针对性激励和调节的生题指导模块、基于考生PPG信号数据判断考生处于考试压力失常状态等级并进行针对性激励和调节的压力指导模块，通过语音指导方式对应考试状态的一个干预，不同的状态进行不同的干预指令，让考生状态逐步调节达到最佳。
优选的，所述光电传感器卡嵌安装在所述智能手表的内侧底部，且所述光 电传感器与突出智能手表底面与人体组织面接触。
进一步优选的，所述智能手表内还设有用于对采集设备组件供电的锂电池。
优选的，所述发挥状态综合分析模块包括考生坚持佩戴智能手表进行监测考试状态的时间参数、用于将考生PPG信号监测和调节反应进行全时段呈现便于查看的PPG信号反应波形图、用于将语音指导模块参与发挥失常状态进行调节和干预结果呈现的指导分析梯形图以及针对考生使用和算法处理结果数据整理分析和建议评价的考试综合分析模块。
本发明的有益效果是：
1.本发明通过设置PPG信号采集设备，在考生进入考试准备状态下，佩戴好智能手表，使用更方便，用户使用时只需单手佩戴设备即可，不影响其任何考试和活动过程，采用光电采集信号，佩戴起来像普通手表一样没有任何不舒适感，可以长时间佩戴，使用时，将待测人体组织覆盖贴附在光电传感器的表面，由发光二极管发出光束照射到待测人体组织，经血液反射后的光信号被光电接收二极管接收，实时获得待测人体组织的心电信号、脉搏波和血氧浓度等PPG信号数据，进而记录在存储模块上，然后将考生在考试状态下的PPG信号通过信号传输模块将采集的实时PPG信号数据传输给中央处理提醒模块，信号传输模块可采用蓝牙传输协议，采集PPG信号更加准确和有效，使得考生在考试状态下的监测数据更加准确和代表性；
2.本发明把PPG分析技术用于平时模拟考试中，并通过平时模拟考试练习的干预，来实现正规考试时候考生考试的最佳状态，并且在遇到考试困难时会自动产生心理暗示，从而达到提升考试状态、预防考试发挥失常的目的；利用人工智能的深度学习技术，对考生考试状态进行多维度深层次的分析，发挥状 态综合分析模块对使用者状态调节结果成像和PPG信号监测的综合体现，便于考生直观清晰的看到自己在考试状态下的失常和调节指导情况，大大提高了该产品的实用性和高效性；
3.本发明的PPG数据采集设备通过信号传输模块把PPG信号数值，发送到中央处理提醒模块的信号接收器，经过嵌入式分析模块初步分析后通过数据交互模块的网络传输把预处理的光电信号数值上传到后台分析处理终端，并且立即对该考生的考试状态进行分析评定，同时对状态不佳时候进行干预和提醒，中央处理提醒模块提供语音提示功能，在用户状态不佳时进行提醒和指导意见，当考生佩戴智能手表进行一场模拟考试结束后，系统会通过设备给考生提示考试中的状态分析，经过一段时间佩戴使用，人工智能深度学习中心经过长时间分析学习后，进而在结束环节经过分析处理生成整个考试发挥状态分析报告，大大提高了该设备基于PPG分析技术对预防考生发挥失常现象的监测调节指导性；
4.本发明的分析过渡模块接收数据交互模块传递的预处理解析PPG信号，然后将信号传递给PPG算法模块，PPG算法模块对接收的PPG信号进行核心算法处理分析，然后利用核心算法分析使用者发挥失常的学习情形分类，且发挥状态失常模块包括考试氛围失常模块、考试生题失常模块和考试压力失常模块，然后发挥状态失常模块将算法数据结果值将数据传输给中央处理提醒模块的数据交互模块，然后数据交互模块将核心算法的结果值发送给语音指导模块，然后进行分级归类和触发语音指导进行分级指导，然后PPG波形参数模块基于云端数据存储和数据成像展示和查看，可以实现后续环节的数据调用和整合归类分析；
5.本发明的语音指导模块包括与所述考试氛围失常模块相对应的氛围指导 模块、与所述考试生题失常模块相对应的生题指导模块和与所述考试压力失常模块相对应的压力指导模块，本发明通过对考生在考试状态下实时的PPG信号进行监测，然后通过核心算法进行实时的解析和归类，然后进行针对性的语音指导调节刺激，让考生进入最佳考试状态，发挥出正常或超常水平，大大提高了该产品使用的实用价值。
附图说明
图1为本发明的整体结构原理流程框图；
图2为本发明的发挥状态综合分析模块的效果展示图。
图中标号：1-PPG信号采集设备，11-光电传感器，12-信号传输模块，13-数据存储模块，14-发光二极管，15-光电接收二极管，16-蓝牙耳机，17-智能手表，18-锂电池，2-中央处理提醒模块，21-信号接收器，22-嵌入式分析模块，23-数据交互模块，24-语音指导模块，25-发挥状态综合分析模块，251-时间参数，252-PPG信号反应波形图，253-指导分析梯形图，254-考试综合分析模块，26-氛围指导模块，27-生题指导模块，28-压力指导模块，3-后台分析处理终端，31-分析过渡模块，32-PPG算法模块，33-发挥状态失常模块，34-PPG波形参数模块，35-考试氛围失常模块，36-考试生题失常模块，37-考试压力失常模块。
具体实施方式
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具 体含义。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1：结合图1-图2，一种基于PPG分析技术的预防考试发挥失常的监测系统，包括PPG信号采集设,1、中央处理提醒模块2和后台分析处理终端3；
PPG信号采集设备1，使用者佩戴采集设备，利用PPG技术采集使用者的心电信号、脉搏波和血氧浓度等光电信号数据参数；
PPG又称为光体积变化描记图法(Photoplethysmography，简称PPG)是借光电手段在活体组织中检测血液容积变化的一种无创检测方法，当一定波长的光束照射到指端皮肤表面，每次心跳时，血管的收缩和扩张都会影响光的透射(例如在透射PPG中，通过指尖的光线)或是光的反射(例如在反射PPG中，来自手腕表面附近的光线)；当光线透过皮肤组织然后再反射到光敏传感器时，光照会有一定的衰减，像肌肉、骨骼、静脉和其他连接组织对光的吸收是基本不变的(前提是测量部位没有大幅度的运动)，但是动脉会不同，由于动脉里有血液的脉动，那么对光的吸收自然也会有所变化，当我们把光转换成电信号时，正是由于动脉对光的吸收有变化而其他组织对光的吸收基本不变，得到的信号就可以分为直流DC信号和交流AC信号，提取其中的AC信号，就能反应出血液流动的特点。
中央处理提醒模块2，用于接收PPG信号采集设备传输的光电数据信号，经过初步分析处理后将预处理光电信号数据传输给所述后台分析处理终端，并 且立即对该考生的考试状态进行分析评定，同时对考生状态不佳的时候进行干预和提醒，进而在结束环节经过分析处理生成整个考试发挥状态分析报告；
后台分析处理终端3，用于接收中央处理提醒模块预处理的光电信号数据，进而利用核心算法将发挥失常因素归纳为氛围、生题、压力三种模型；学习模型参与运算因素有考试科目、考试时间长度、情绪值、压力状态、AC信号等，系统根据考生考试状态模型判断当前考生处于何种发挥失常因素中，然后通过语音进行针对性方案干预，让考生进入最佳考试状态。
PPG信号采集设备1还包括用于采集使用者PPG信号的光电传感器11、用于将光电传感器采集PPG信号进行传输的信号传输模块12以及用于将采集信号进行存储的数据存储模块13；其中所述光电传感器11还包括用于发出光束信号照射待测人体组织的发光二极管14和用于接收经血液反射后光电信号数据的光电接收二极管15，所述光电传感器11卡嵌安装在所述智能手表17的内侧底部，且所述光电传感器11与突出智能手表17底面与人体组织面接触，所述智能手表17内还设有用于对采集设备组件供电的锂电池18。
所述PPG信号采集设备1为智能手表17，使用更方便，用户使用时只需单手佩戴设备即可，不影响其任何考试和活动过程，采用光电采集信号，佩戴起来像普通手表一样没有任何不舒适感，可以长时间佩戴，所述PPG信号采集设备1的信号传输模块12为蓝牙传输协议，所述信号传输模块12还连接有蓝牙耳机16，考生在单独环境下模拟考试，可以使用该设备自有语音提醒功能进行训练；在多人环境或嘈杂环境下可以佩戴蓝牙耳机进行训练，蓝牙耳机与手表采用蓝牙传输协议连接。
通过设置PPG信号采集设备，在考生进入考试准备状态下，佩戴好智能手 表，使用更方便，用户使用时只需单手佩戴设备即可，不影响其任何考试和活动过程，采用光电采集信号，佩戴起来像普通手表一样没有任何不舒适感，可以长时间佩戴，使用时，将待测人体组织覆盖贴附在光电传感器的表面，由发光二极管发出光束照射到待测人体组织，经血液反射后的光信号被光电接收二极管接收，实时获得待测人体组织的心电信号、脉搏波和血氧浓度等PPG信号数据，进而记录在存储模块上，然后将考生在考试状态下的PPG信号通过信号传输模块将采集的实时PPG信号数据传输给中央处理提醒模块，信号传输模块可采用蓝牙传输协议，采集PPG信号更加准确和有效，使得考生在考试状态下的监测数据更加准确和代表性。
把PPG分析技术用于平时模拟考试中，并通过平时模拟考试练习的干预，来实现正规考试时候考生考试的最佳状态，并且在遇到考试困难时会自动产生心理暗示，从而达到提升考试状态、预防考试发挥失常的目的；利用人工智能的深度学习技术，对考生考试状态进行多维度深层次的分析，发挥状态综合分析模块对使用者状态调节结果成像和PPG信号监测的综合体现，便于考生直观清晰的看到自己在考试状态下的失常和调节指导情况，大大提高了该产品的实用性和高效性。
所述中央处理提醒模块2包括用于接收信号传输模块PPG信号数据的信号接收器21、用于对PPG信号进行预处理分析的嵌入式分析模块22、用于将预处理PPG信号数据进行数据传输的数据交互模块23、用于对使用者状态进行针对性干预和提醒的语音指导模块24以及用于对使用者状态调节结果成像和PPG信号监测的发挥状态综合分析模块25，所述语音指导模块24还包括基于考生PPG信号数据判断考生处于考试氛围失常状态等级并进行针对性激励和调节的氛围指导模块26、基于考生PPG信号数据判断考生处于考试生题失常状态等级并进 行针对性激励和调节的生题指导模块27、基于考生PPG信号数据判断考生处于考试压力失常状态等级并进行针对性激励和调节的压力指导模块28，通过语音指导方式对应考试状态的一个干预，不同的状态进行不同的干预指令，让考生状态逐步调节达到最佳。
PPG数据采集设备通过信号传输模块把PPG信号数值，发送到中央处理提醒模块的信号接收器，经过嵌入式分析模块初步分析后通过数据交互模块的网络传输把预处理的光电信号数值上传到后台分析处理终端，并且立即对该考生的考试状态进行分析评定，同时对状态不佳时候进行干预和提醒，中央处理提醒模块提供语音提示功能，在用户状态不佳时进行提醒和指导意见，当考生佩戴智能手表进行一场模拟考试结束后，系统会通过设备给考生提示考试中的状态分析，经过一段时间佩戴使用，人工智能深度学习中心经过长时间分析学习后，进而在结束环节经过分析处理生成整个考试发挥状态分析报告，大大提高了该设备基于PPG分析技术对预防考生发挥失常现象的监测调节指导性。
所述发挥状态综合分析模块25包括考生坚持佩戴智能手表进行监测考试状态的时间参数251、用于将考生PPG信号监测和调节反应进行全时段呈现便于查看的PPG信号反应波形图252、用于将语音指导模块参与发挥失常状态进行调节和干预结果呈现的指导分析梯形图253以及针对考生使用和算法处理结果数据整理分析和建议评价的考试综合分析模块254。
所述后台分析处理终端3包括用于接收数据交互模块传输PPG信号数据的分析过渡模块31、用于将分析过渡模块进行信号数据进行核心算法处理的PPG算法模块32、基于PPG算法模块处理数据进行对使用者考试发挥状态进行评级归类的发挥状态失常模块33以及基于云端数据存储和数据成像展示和查看的PPG波形参数模块34；其中所述发挥状态失常模块33还包括由于考试氛围造成 考生发挥失常PPG信号数据状态变化的考试氛围失常模块35、由于考试试题较生对考生造成的发挥失常PPG信号数据状态变化的考试生题失常模块36以及由于考试环境和自身心理等压力造成发挥失常PPG信号数据状态变化的考试压力失常模块37；
其中所述PPG算法模块的核心算法公式为：
计算心率参数：
HR＝FS*60/n
HR：心率；FS：采样频率；
n：一段PPG信号中的峰峰之间平均间隔点数；
计算血氧参数：
R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
Spo2＝110-25R
Spo2:血氧饱和度
Red红光；Ir红外光；ac交流分量；dc直流分量；
计算脉搏参数：
Figure PCTCN2021134708-appb-000005
Figure PCTCN2021134708-appb-000006
K:脉搏波波型特征量
P m为平均动脉压，它等于一个心动周期中脉搏压力P(t)的平均值
P s，P d分别为收缩压和舒张压；
计算情绪状态参数：
Figure PCTCN2021134708-appb-000007
X(r)＝[d i(r)] 2；
Figure PCTCN2021134708-appb-000008
r：光电信号参数；T：采样周期；N：采样点的个数；
d i(r)：用户情绪波动值；X(r)为d i(r)的平方；
Y(r)：用户情绪状态值，0-100；
t：当前时间与开始考试时间的时间差，以秒为单位；
当t<120，Y(r)>＝60时，考生因考场氛围造成情绪紧张，导致考试状态失常，设备通过语音引导考生用深呼吸等方式达到放松身体恢复轻松状态的效果；
当t>＝120,Y(r)>80时，考生因考试中遇见生题而造成情绪紧张，导致考试状态失常，设备通过语音引导考生放松身体先做后面的题目；
当t>＝120,Y(r)>＝60,Y(r)<＝80时，考生因自身压力造成情绪紧张，导致考试状态失常，设备通过语音引导考生防松身体，不要过分执着于考试结果，尽力而为就好，主要是要平时多加练习；
根据r、T、N等采集数据进行算法处理，从而基于X(r)、Y(r)、t分析出用户在氛围、生题、压力等因素方面的考试状态，从而采取不同方式的激励手段对用户进行激励调节，让考生进入最佳考试状态。
分析过渡模块31接收数据交互模块23传递的预处理解析PPG信号，然后将信号传递给PPG算法模块32，PPG算法模块32对接收的PPG信号进行核心算法处理分析，然后利用核心算法分析使用者发挥失常的学习情形分类，且发挥状态失常模块33包括考试氛围失常模块35、考试生题失常模块36和考试压力失常模块37，然后发挥状态失常模块33将算法数据结果值将数据传输给中央 处理提醒模块2的数据交互模块23，然后数据交互模块23将核心算法的结果值发送给语音指导模块24，然后进行分级归类和触发语音指导进行分级指导，然后PPG波形参数模块基于云端数据存储和数据成像展示和查看，可以实现后续环节的数据调用和整合归类分析。
语音指导模块24包括与所述考试氛围失常模块相对应的氛围指导模块26、与所述考试生题失常模块相对应的生题指导模块27和与所述考试压力失常模块相对应的压力指导模块28，本发明通过对考生在考试状态下实时的PPG信号进行监测，然后通过核心算法进行实时的解析和归类，然后进行针对性的语音指导调节刺激，让考生进入最佳考试状态，发挥出正常或超常水平，大大提高了该产品使用的实用价值。
最后应说明的是：以上仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：包括PPG信号采集设备(1)、中央处理提醒模块(2)和后台分析处理终端(3)；
    所述PPG信号采集设备(1)，使用者佩戴采集设备利用PPG技术采集使用者的心电信号、脉搏波和血氧浓度等光电信号数据参数；
    所述中央处理提醒模块(2)，用于接收PPG信号采集设备传输的光电数据信号，经过初步分析处理后将预处理光电信号数据传输给所述后台分析处理终端，并且立即对该考生的考试状态进行分析评定，同时对考生状态不佳的时候进行干预和提醒，进而在结束环节经过分析处理生成整个考试发挥状态分析报告；
    所述后台分析处理终端(3)，用于接收中央处理提醒模块预处理的光电信号数据，进而利用核心算法将发挥失常因素归纳为氛围、生题、压力三种模型；学习模型参与运算因素有考试科目、考试时间长度、情绪值、压力状态、AC信号等，系统根据考生考试状态模型判断当前考生处于何种发挥失常因素中，然后通过语音进行针对性方案干预，让考生进入最佳考试状态；
    所述PPG信号采集设备(1)还包括用于采集使用者PPG信号的光电传感器(11)、用于将光电传感器采集PPG信号进行传输的信号传输模块(12)以及用于将采集信号进行存储的数据存储模块(13)；其中所述光电传感器(11)还包括用于发出光束信号照射待测人体组织的发光二极管(14)和用于接收经血液反射后光电信号数据的光电接收二极管(15)；
    所述中央处理提醒模块(2)包括用于接收信号传输模块PPG信号数据的信号接收器(21)、用于对PPG信号进行预处理分析的嵌入式分析模块(22)、用于将预处理PPG信号数据进行数据传输的数据交互模块(23)、用于对使用者状 态进行针对性干预和提醒的语音指导模块(24)以及用于对使用者状态调节结果成像和PPG信号监测的发挥状态综合分析模块(25)；
    所述后台分析处理终端(3)包括用于接收数据交互模块传输PPG信号数据的分析过渡模块(31)、用于将分析过渡模块进行信号数据进行核心算法处理的PPG算法模块(32)、基于PPG算法模块处理数据进行对使用者考试发挥状态进行评级归类的发挥状态失常模块(33)以及基于云端数据存储和数据成像展示和查看的PPG波形参数模块(34)；其中所述发挥状态失常模块(33)还包括由于考试氛围造成考生发挥失常PPG信号数据状态变化的考试氛围失常模块(35)、由于考试试题较生对考生造成的发挥失常PPG信号数据状态变化的考试生题失常模块(36)以及由于考试环境和自身心理等压力造成发挥失常PPG信号数据状态变化的考试压力失常模块(37)；
    其中所述PPG算法模块的核心算法公式为：
    计算心率参数：
    HR＝FS*60/n
    HR：心率；FS：采样频率；
    n：一段PPG信号中的峰峰之间平均间隔点数；
    计算血氧参数：
    R＝(Red(ac)/Red(dc))/(Ir(ac)/Ir(dc))
    Spo2＝110-25R
    Spo2:血氧饱和度
    Red红光；Ir红外光；ac交流分量；dc直流分量；
    计算脉搏参数：
    Figure PCTCN2021134708-appb-100001
    Figure PCTCN2021134708-appb-100002
    K:脉搏波波型特征量
    P m为平均动脉压，它等于一个心动周期中脉搏压力P(t)的平均值P s，P d分别为收缩压和舒张压；
    计算情绪状态参数：
    Figure PCTCN2021134708-appb-100003
    X(r)＝[d i(r)] 2；
    Figure PCTCN2021134708-appb-100004
    r：光电信号参数；T：采样周期；N：采样点的个数；
    d i(r)：用户情绪波动值；X(r)为d i(r)的平方；
    Y(r)：用户情绪状态值，0-100；
    t：当前时间与开始考试时间的时间差，以秒为单位；
    当t<120，Y(r)>＝60时，考生因考场氛围造成情绪紧张，导致考试状态失常，设备通过语音引导考生用深呼吸等方式达到放松身体恢复轻松状态的效果；
    当t>＝120,Y(r)>80时，考生因考试中遇见生题而造成情绪紧张，导致考试状态失常，设备通过语音引导考生放松身体先做后面的题目；
    当t>＝120,Y(r)>＝60,Y(r)<＝80时，考生因自身压力造成情绪紧张，导致考试状态失常，设备通过语音引导考生防松身体，不要过分执着于考试结果，尽力而为就好，主要是要平时多加练习；
    根据r、T、N等采集数据进行算法处理，从而基于X(r)、Y(r)、t分析出用 户在氛围、生题、压力等因素方面的考试状态，从而采取不同方式的激励手段对用户进行激励调节，让考生进入最佳考试状态。
  2. 根据权利要求1所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述PPG信号采集设备(1)为智能手表(17)。
  3. 根据权利要求2所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述PPG信号采集设备(1)的信号传输模块(12)为蓝牙传输协议
  4. 根据权利要求3所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述信号传输模块(12)还连接有蓝牙耳机(16)。
  5. 根据权利要求1所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述语音指导模块(24)还包括基于考生PPG信号数据判断考生处于考试氛围失常状态等级并进行针对性激励和调节的氛围指导模块(26)、基于考生PPG信号数据判断考生处于考试生题失常状态等级并进行针对性激励和调节的生题指导模块(27)、基于考生PPG信号数据判断考生处于考试压力失常状态等级并进行针对性激励和调节的压力指导模块(28)。
  6. 根据权利要求1所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述光电传感器(11)卡嵌安装在所述智能手表(17)的内侧底部，且所述光电传感器(11)与突出智能手表(17)底面与人体组织面接触。
  7. 根据权利要求6所述的基于PPG分析技术预防考试发挥失常的监测系统，其特征在于：所述智能手表(17)内还设有用于对采集设备组件供电的锂电池(18)。
  8. 根据权利要求1所述的基于PPG分析技术预防考试发挥失常的监测系统， 其特征在于：所述发挥状态综合分析模块(25)包括考生坚持佩戴智能手表进行监测考试状态的时间参数(251)、用于将考生PPG信号监测和调节反应进行全时段呈现便于查看的PPG信号反应波形图(252)、用于将语音指导模块参与发挥失常状态进行调节和干预结果呈现的指导分析梯形图(253)以及针对考生使用和算法处理结果数据整理分析和建议评价的考试综合分析模块(254)。
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CN112716499A (zh) * 2021-02-03 2021-04-30 河南省安信科技发展有限公司 基于便携式ecg分析技术的预防考试失常系统
CN113327406A (zh) * 2021-03-19 2021-08-31 河南省安信科技发展有限公司 基于ppg分析技术预防考试发挥失常的监测系统

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