CN109498040A - Alertness detection method and its system - Google Patents
Alertness detection method and its system Download PDFInfo
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- CN109498040A CN109498040A CN201811638363.2A CN201811638363A CN109498040A CN 109498040 A CN109498040 A CN 109498040A CN 201811638363 A CN201811638363 A CN 201811638363A CN 109498040 A CN109498040 A CN 109498040A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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Abstract
The embodiment of the invention discloses a kind of alertness detection method and its system, wherein method includes: newly-increased target stimulation rule, target stimulation rule include when specific two letters continuously occur tester press feeler switch；Within the testing time, when occurring default target stimulation image in test screen, receives the button operation of tester and test record is generated according to button operation；It is obtained according to test record and exports analysis as a result, analysis result includes accuracy rate index, reaction speed index, index of discrimination, likelihood ratio and discrimination standard.Implement the embodiment of the present invention, target stimulation rule is increased newly, tester presses feeler switch when i.e. specific two letters continuously occur, further increase three new output-indexes, that is index of discrimination, likelihood ratio and discrimination standard, by the above-mentioned improvement to target stimulation design and 3 newly-increased output-indexes, overcomes existing PVT test and lack the defect investigated to tester's short term memory and decision edge.
Description
Technical field
The present invention relates to communications and transportation personnel's fatigue detecting technology fields, and in particular to a kind of alertness detection method and its
System.
Background technique
Fatigue seriously threatens traffic safety, and many traffic accidents or accident proneness all directly or indirectly have with fatigue
It closes.The fatigue state of related personnel's period on duty is detected and identificated and evaluated, tired risk management and control is carried out, for ensureing traffic
Transportation safety is of great significance.
Alertness test is a kind of common fatigue state appraisal procedure.Alertness is also known as alertness note that being that individual is right
The stimulation to individual with important adaptive significanc for not occurring but being likely to occur, what is kept perceives and the function of duration standard
Standby state.Mackworth_ carries out system research (Mackworth to alertness being during World War II
NH.The breakdown of vigilance during prolonged visual search.Quarterly J Exp
Psychol, 1948,1 (Pt1): 6-21.).In fatigue state, alertness decline is shown as to extraneous stimulate the reaction energy human body
Power reduces, cannot accurately identify, judge, and decision-making capability declines.
Alertness test method includes cognitive psychological test method, Scale assessment method and psychomotor alertness task
(psychomotor vigilancetask, PVT) test method.Wherein, cognitive psychological test method, such as numerical span, continuously
The deficiencies of computing capability and cross out test etc., there are specific aim is not strong or test operation and result statistics are not inconsistent；Scale is commented
Valence method, such as card Rawlins card alertness subscale (karolinska sleepiness scale, KSS), although easy to operate,
But objectivity is poor；Psychomotor alertness task (psychomotor vigilancetask, PVT) test method has behaviour
Work is simple, experimental data processing is convenient, study efficacy is small, leads to the important of fatigue to the awakening of long time-histories and sleep rhythm disorder etc.
The advantages that factor detection sensitivity is high.In recent years, which is usually used in flying for aerospace
The Fatigue Assessment research of administrative staff and spacefarer.Such as it is presently commercially available by Ambulatory Monitoring company production
The test equipment of PVT 1.Its minute is that 10min. requires subject (such as black computer screen occur when target view stimulation
When there is red ball in curtain center, or the English alphabet middle finger watching "+" in screen attentively when becoming " ★ " or occurring at random in screen
Fixed a certain letter is target stimulation) when, left mouse button is quickly pressed at once, and target stimulation interval 2-10s is quickly presented at random.It grasps in advance
Make, press the wrong button, key press time is too long is accordingly to be regarded as mistake and automatically records.When test index is reaction of the target depending on stimulation, leak through
Number and all kinds of errors numbers etc..Improvement mainly on test form is improved it in recent years, as host workstations are added
(the Honn KA.Riedy SM.Grant DA.Validation of a portable.touch-screen such as a mobile terminal
Psychomotor vigilance test.Aerosp Med Hum Perform, 2015,86 (5): 428-434.).China
Researcher has carried out some alertness correlative studys using above-mentioned software, such as Wu Huijuan is investigated using the test of PVT 1
(Wu Huijuan different periods sleep deprivation is to healthy male Sleep architecture, blood for the influence of sleep deprivation, afternoon nap to human body alertness
The Shanghai research of clear cortisol and Cognitive Function: The 2nd Army Medical College, 2007. Wu Huijuan, Zhao Zhongxin, Zhuan Jianhua wait
The Shanghai influence [J] the medicine taken a nap after lunch to health young man Declarative memory and psychomotor alertness, 2007,30 (5): 31
9-322.).As index evaluation civilian aviator when the Fan Wei and Lu Shenghua of Civil Aviation University of China use the reaction in PVT test
Drive simulating induces fatigue, and to react the judgment criteria that time-varying is turned to degree of fatigue, has studied the fatigue based on eye tracker
Judge that (Fan Wei, Lu Shenghua determine association attributes research based on the flyer's fatigue of eye tracker to association attributes.Computer technology and hair
Exhibition, 2014,24 (6), 15-19.)；Mathematical feature mould when Tian Wanli etc. establishes reaction using independently developed PVT test software
Type, when having probed into reaction with flyer's fatigue degree correlativity (Tian Wanli, aircrew fatigue's risk analysis and measuring study.
Civil Aviation University of China, 2015, Master's thesis).Up to the present, there is not yet being surveyed to air traffic control person using PVT
Examination carries out the pertinent literature report of Fatigue Assessment.
In addition, when existing PVT test software output-index only includes reaction, accuracy, error rate, rate of failing to report etc., these
Index is difficult to embody the communications and transportation staff such as memory, decision edge required quality on duty.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of alertness detection method and its system, to overcome existing PVT to survey
Examination lacks the defect investigated to tester's short term memory and decision edge.
To achieve the above object, in a first aspect, the embodiment of the invention provides a kind of alertness detection methods, comprising:
When newly-increased target stimulation rule, the target stimulation rule include that specific two letters continuously occur, tester presses
Feeler switch；
Within the testing time, when occurring default target stimulation image in test screen, the button operation of tester is received simultaneously
Test record is generated according to the button operation；
It is obtained according to the test record and exports analysis as a result, the analysis result includes accuracy rate index, reaction speed
Spend index, index of discrimination, likelihood ratio and discrimination standard.
As a kind of preferred embodiment of the application, obtained according to the test record and export analysis result specifically wrap
It includes:
According to the test record obtain it is multiple hit the frequency, fail to report the frequency, false the frequency, target signal number and non-target letter
Number number；
According to it is described hit the frequency, fail to report the frequency, the false frequency, target signal number and non-target signal number obtain the standard
True rate index, the accuracy rate index include hitting rate, rate of failing to report and false alert rate.
As a kind of preferred embodiment of the application, when reaction speed index includes reaction and reaction efficiency.
As a kind of preferred embodiment of the application, obtained according to the test record and export analysis result specifically wrap
It includes:
The index of discrimination, likelihood ratio and differentiation are calculated and exported according to rate, rate of failing to report and the false alert rate of hitting
Standard.
As a kind of preferred embodiment of the application, the testing time is 5-30 minutes.
Second aspect, the embodiment of the invention provides a kind of alertness detection system, including testing stimulus presentation device and
Data result analytical equipment, the testing stimulus presentation device are presented for stimulating.Wherein, the data result analytical equipment packet
It includes:
Newly-increased module, for increasing target stimulation rule newly, the target stimulation rule includes that specific two letters continuously occur
When, tester press feeler switch；
Generation module, for being pierced when occurring default target in the test screen of testing stimulus presentation device within the testing time
When swashing image, receives the button operation of tester and test record is generated according to the button operation；
Analysis module, for analysis to be obtained and exported according to the test record as a result, the analysis result includes accurate
Rate index, reaction speed index, index of discrimination, likelihood ratio and discrimination standard.
As a kind of preferred embodiment of the application, the analysis module includes:
Acquiring unit, for according to the test record obtain it is multiple hit the frequency, fail to report the frequency, false the frequency, target believe
Number number and non-target signal number；
First computing unit hits the frequency, fails to report the frequency, the false frequency, target signal number and non-target signal according to described
Number obtains the accuracy rate index, and the accuracy rate index includes hitting rate, rate of failing to report and false alert rate.
As a kind of preferred embodiment of the application, when reaction speed index includes reaction and reaction efficiency.
As applying for a kind of preferred embodiment, the analysis module further include:
Second computing unit refers to for hitting rate, rate of failing to report and false alert rate according to and calculating and export the discrimination
Number, likelihood ratio and discrimination standard.
As a kind of preferred embodiment of the application, the testing time is 5-30 minutes.
Implement the embodiment of the present invention, increased newly target stimulation rule, i.e., when specific two letters continuously occur, tester by
Lower feeler switch further increases three new output-indexes, i.e. index of discrimination, likelihood ratio and discrimination standard, passes through
The above-mentioned improvement to target stimulation design and 3 newly-increased output-indexes overcome existing PVT test shortage and remember in short-term to tester
Recall the defect of power and decision edge investigation.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the schematic flow diagram for the alertness detection method that first embodiment of the invention provides；
Fig. 2 is the schematic diagram of instruction；
Fig. 3 is the structural schematic diagram for the alertness detection system that first embodiment of the invention provides；
Fig. 4 is the structural schematic diagram of data result analytical equipment in Fig. 3；
Fig. 5 is the structural schematic diagram of analysis module in Fig. 4.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.It is also understood that the institute in this description of the invention
The term used is merely for the sake of being not intended to limit the present invention for the purpose of describing particular embodiments.Such as in description of the invention
With it is used in the attached claims like that, other situations unless the context is clearly specified, otherwise singular
" one ", "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
Alertness detection method provided by the embodiment of the present invention, it is suitable for alertness detection systems.Alertness inspection
Examining system includes testing stimulus presentation device and data result analytical equipment.Wherein, testing stimulus presentation device is used for tester
The typing of essential information and record storage, the setting of some stimulation parameters configuration, carry out smooth stimulation as desired and present.Number
According to interpretation of result device then first to each reaction of tester and reaction time (be presented to that tester reacts from stimulation when
Between, it is accurate to millisecond) original record is carried out, and the calculating of data target parameter is carried out according to corresponding calculation formula, it is counted
According to the management in library.
Referring to FIG. 1, being the flow diagram of alertness detection method provided by first embodiment of the invention, as schemed institute
Show, this method may include steps of:
S101 increases target stimulation rule newly.
Specifically, on data result analytical equipment, target stimulation rule is increased newly.The target stimulation rule includes specific two
Alphabetical when continuously occurring, tester presses respective keys (feeler switch) at once, such as goes out on the screen of testing stimulus presentation device
When existing A → X or X → A, it is desirable that tester presses the button to make correct response.The target stimulation rule is to add short term memory
Enter in test, can reflect out the short term memory of tester.
S102, the personal information of accreditation person.
Specifically, in testing stimulus presentation device, the personal information of accreditation person, including name, gender, the age,
Industry and the entire period of actual operation etc..
S103 starts prediction so that tester is familiar with testing process.
Specifically, occur instruction as shown in Figure 2 on the screen of testing stimulus presentation device, and the instruction is carried out
Explanation.After having explained instruction, practice in 1 minute is carried out, so that tester is familiar with testing process.
S104, when occurring default target stimulation image in test screen, receives the key behaviour of tester within the testing time
Make and test record is generated according to the button operation.
The formal testing time is 5-30 minutes.Within the testing time, when the test screen of testing stimulus presentation device
It is upper when there is default target stimulation image, such as when there is A → X or X → A, tester presses respective keys, data result analysis dress
The signal for receiving the button operation of tester is set, and test record is generated according to button operation.
S105 is obtained and is outputed test result according to test record.
Wherein, it includes hitting rate, rate of failing to report, false alert rate that test result, which includes: accuracy rate index,；Reaction speed index includes
When reaction and reaction efficiency (in conjunction with accuracy and reaction when index)；It finally further include the discrimination according to derived from Signal Detection Theory
Power index, likelihood ratio and discrimination standard.
Specifically, step S105 is specifically included:
(1) after each tester completes test, data result analytical equipment can generate test record according to test process,
The test record includes the time that stimulation is the no reaction of meeting and reaction；
(2) according to test record obtain it is multiple hit the frequency, fail to report the frequency, the false frequency, target signal number and non-target are believed
Number number；
(3) according to hit the frequency, fail to report the frequency, the false frequency, target signal number and non-target signal number obtain hitting rate,
Rate of failing to report and false alert rate, and rate of hitting, rate of failing to report and false alert rate etc. are reported in final data result；
Wherein, hit frequency f1 (tester reacts target stimulation), fail to report frequency f2 (tester not to target pierce
The reaction of radical row), false frequency f3 (tester reacts non-target stimulation), (tester is to non-by correct rejection frequency f4
Target stimulation does not react) f4=resultant signal number-f1-f2-f3；Hit rate P1=f1/ target signal number, rate of failing to report P2=f2/ target
Signal number, the non-target signal number of false alert rate P3=f3/；
It should be noted that hitting frequency f1, failing to report frequency f2, make a false report frequency f3 and correct rejection frequency f4 is according to anti-
Answer number, computer to respective reaction counted automatically as a result, i.e. f1, f2, f3 and f4 are the meters operated every time to tester
Number.
(4) basis hits rate, rate of failing to report and false alert rate and calculates and export index of discrimination, likelihood ratio and discrimination standard,
And index of discrimination, likelihood ratio and discrimination standard are reported in final data result.
Specifically, it is further counted according to the formula of normal distribution and corresponding data table (gaussian distribution table i.e. in statistics book)
Correlated results parameter: index of discrimination d ', likelihood ratio beta and discrimination standard C value is calculated, and is reported in data result,
In
D '=Z hits rate-Z false alert rate (note: Z is the horizontal axis in standard normal distribution function, is had positive and negative)；
β=Y hits rate/Y false alert rate (note: Y is the vertical height in standard normal distribution function)；
C=1-Z hits rate/d '.
It should be noted that index of discrimination d ' refers to the separation between interior noise distribution and the distribution of signal plus noise
Degree.The two separation degree is bigger, and sensibility is higher；Conversely, sensibility is lower；Likelihood ratio beta refers to that signal plus noise causes
Specific sensation conditional probability and noise caused by conditional probability ratio, by β value can explain tester to stimulate into
The stringency of row held standard when judging, β value is bigger (β > 1), and tester's accepted standard is stringenter, and β value is smaller (β < 1),
The judgment criteria of tester is looser；Discrimination standard C refers to the impression experience intensity judged on separation, judgment criteria C's
Numerical value is bigger, and the judgment criteria of tester is stringenter, and numerical value is smaller, and judgment criteria is looser.
Above-mentioned alertness detection method is to continue to use traditional test normal form (i.e. typing personal information, explanation instruction, test white silk
Habit and official testing), while using the thought of Signal Detection Theory, probability (its is presented according to preset signal on computers
In, probability numbers range is 0-100%, and default is 20%), random that signal stimulus and non-signal stimulation is presented, it is desirable that tester couple
Signal is reacted.In experiment can by the parameters of all signals (no matter target stimulation or non-target stimulation) (such as font size, color,
Time, interval time etc. is presented in content (letter)) and the probability of occurrence of target stimulation carry out can configure adjustment, to the every of tester
Secondary response and reaction time (being presented to the time that tester reacts from stimulation, be accurate to millisecond) carry out original record, to visit
Rope tester pays attention to the feature and mechanism of alertness.Wherein, font size, color, alphabetical content current procedure are not provided with, and are such as set
It sets, can be presented between time 0-10s according to the requirement of text, between default 1000ms, interval time 0-10s, default
100ms。
It should be noted that above-mentioned alertness detection method is suitable for all personnel for needing alertness to test, such as hand over
The relevant staff of logical carrier, comprising: air traffic control person (the band form master and general staff), engineering maintenance
Personnel, pilot, airport ground security personnel, approach tower controller and fatigue driving driver etc..Wherein, traffic in civil aviaton
Controller is often responsible for while commanding the flight path of multi rack aircraft, does with reference to many kinds of parameters such as meteorological data, working experiences
Judge out, issue to driver and fast and accurately instruct, commander if there is fault it will cause great casualties and again
Big economic loss, therefore controller is safety of civil aviation key post personnel, safety responsibility is great.Controller needs when on duty on duty
Keep clearheaded, job requirement has a good memory, the attention of height, accurate judgment.But controller
Fatigue is easily generated again since workload is big, operating pressure is big.Therefore, aforementioned alertness detection method can be used to hand over civil aviaton
Logical controller carries out alertness test.
In addition, above-mentioned alertness detection method applies also for the personnel depaly etc. of airport Workforce Management and newly-built airports.
But above-mentioned alertness detection method is not limited only to the above-mentioned alertness test for enumerating personnel.
Embodiment in order to better illustrate the present invention provides following three groups of experiments and is illustrated:
Experiment one
Tester is certain approach tower controller, pre-job, carries out testing for 10 minutes to it, and monogram is A-X, as a result
It is as follows:
Target signal number: 183；Number of hits: 183；Hit ratio: 100%；It leaks and selects number: 0；Fail to report ratio: 0%；Make a false report number:
6；False ratio: 0.014%；When choosing average response: 546.792；Z hits rate: 3.09%；Z false alert rate: -0.03%；Y is hit
Middle rate: 0.00337%；Y false alert rate: 0.3988%；D ' value: 3.12；β value: 0.008；C value: 0.01
Experiment two
Certain approach tower controller is coming off duty with after the meal, feels tired out, carries out testing for 10 minutes to it, monogram
It is B-Y, as a result as follows:
Target signal number: 168；Number of hits: 134；Hit ratio: 79.8%；It leaks and selects number: 34；Fail to report ratio: 0.202%；It is empty
Count off: 20；False ratio: 0.046%；When choosing average response: 491.854；Z hits rate: 0.83%；Z false alert rate :-
0.12%；Y hits rate: 0.28269%；Y false alert rate: 0.39608%；D ' value: 0.95；β value: 0.714；C value: 0.126
Experiment three
Tester is certain approach tower controller, pre-job, carries out testing for 10 minutes to it, and monogram is C-M, as a result
It is as follows:
Target signal number: 167；Number of hits: 159；Hit ratio: 95.2%；It leaks and selects number: 8；Fail to report ratio: 0.048%；It is empty
Count off: 5；False ratio: 0.012%；When choosing average response: 422.869；Z hits rate: 1.66%；Z false alert rate :-
0.03%；Y hits rate: 0.10057%；Y false alert rate: 0.39876%；D ' value: 1.69；β value: 0.252；C value: 0.018
Explanation is needed further exist for, above-mentioned alertness test method may be designed as a test software or some test
APP, such as based on cognitive ability fatigue detecting software.In use, test software or test APP are integrated in a terminal,
Such as be integrated in tablet computer, which has above-mentioned testing stimulus presentation device and data result analytical equipment
Function.The alertness detection to above-noted persons can be realized by the tablet computer and the APP being installed in the tablet computer.On
It states and tired software is detected based on cognitive ability, a the recognizing based on tablet computer operation developed such as civil aviation authority's civil aviation medicine center
Know capacity test system, which includes 3 test factors: process velocity, working memory and inhibition.It detects and surveys in items test
Examination person is when reacting before and after fatigue, computing capability, short-term memory and long-term memory power etc..But these parameter indexes set ratio
It is more difficult, often there is " ceiling " or " floor " effect, the reliability of these scales or software and validity is caused not enough to enable completely
People is satisfied.A air traffic controller's cognitive prostration test software for another example researched and developed uses five kinds of Cognitive tasks and comes
Separately detect the reduction situation of four kinds of cognitive functions.Including digital identification, numerical calculation, the identification of positive and negative word, word colour matching
(Stroop) experiment, paper folding experiment.It is found by field application, study efficacy serious interference, this software need further
Improve.
Implement alertness detection method provided by the embodiment of the present invention, has increased target stimulation rule newly, i.e., it is two specific
Alphabetical when continuously occurring, tester presses feeler switch, further increases three new output-indexes, i.e., index of discrimination,
Likelihood ratio and discrimination standard are overcome existing by the above-mentioned improvement to target stimulation design and 3 newly-increased output-indexes
PVT test lacks the defect investigated to tester's short term memory and decision edge.
Correspondingly, provided by above-described embodiment on the basis of alertness detection method, the embodiment of the present invention is also provided
A kind of alertness detection system.Referring to FIG. 3, the alertness detection system includes testing stimulus presentation device 100 and data
Interpretation of result device 200.Wherein, testing stimulus is presented system 100 and presents for stimulating, as shown in figure 4, data result analysis dress
Setting 200 includes:
Newly-increased module 20, for increasing target stimulation rule newly, which includes that specific two letters continuously occur
When, tester press feeler switch；
Generation module 21 was used within the testing time, when the default target of appearance in the test screen of testing stimulus presentation device
When stimulating image, receives the button operation of tester and test record is generated according to the button operation；Wherein, the testing time is
5-30 minutes；
Analysis module 22, for analysis to be obtained and exported according to test record as a result, the analysis result includes that accuracy rate refers to
Mark, reaction speed index, index of discrimination, likelihood ratio and discrimination standard；It is imitated when reaction speed index includes reaction with reaction
Rate.
Further, as shown in figure 5, analysis module 22 includes:
Acquiring unit 221, for according to test record obtain it is multiple hit the frequency, fail to report the frequency, false the frequency, target signal
Number and non-target signal number；
First computing unit 222, according to hitting the frequency, fail to report the frequency, the false frequency, target signal number and non-target signal
Number obtains the accuracy rate index, which includes hitting rate, rate of failing to report and false alert rate；
Second computing unit 223 calculates for hitting rate, rate of failing to report and false alert rate according to and exports the discrimination
Index, likelihood ratio and discrimination standard.
It should be noted that the specific workflow of alertness detection system please refers to preceding method implementation in the present embodiment
The description of example part, details are not described herein.
The alertness detection system for implementing the embodiment of the present invention has increased target stimulation rule newly, i.e., specific two letters are even
Continuous when occurring, tester presses feeler switch, further increases three new output-indexes, i.e. index of discrimination, likelihood ratio
Value and discrimination standard overcome existing PVT test by the above-mentioned improvement to target stimulation design and 3 newly-increased output-indexes
Lack the defect investigated to tester's short term memory and decision edge.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of alertness detection method characterized by comprising
When newly-increased target stimulation rule, the target stimulation rule include that specific two letters continuously occur, tester press test
Key；
Within the testing time, when occurring default target stimulation image in test screen, the button operation and basis of tester are received
The button operation generates test record；
It is obtained according to the test record and exports analysis as a result, the analysis result includes that accuracy rate index, reaction speed refer to
Mark, index of discrimination, likelihood ratio and discrimination standard.
2. alertness detection method as described in claim 1, which is characterized in that obtained and exported point according to the test record
Analysis result specifically includes:
It is obtained according to the test record and multiple hit the frequency, fails to report the frequency, the false frequency, target signal number and non-target signal
Number；
According to it is described hit the frequency, fail to report the frequency, the false frequency, target signal number and non-target signal number obtain the accuracy rate
Index, the accuracy rate index include hitting rate, rate of failing to report and false alert rate.
3. alertness detection method as claimed in claim 2, which is characterized in that the reaction speed index include reaction when and
Reaction efficiency.
4. alertness detection method as claimed in claim 2, which is characterized in that obtained and exported point according to the test record
Analysis result specifically includes:
The index of discrimination, likelihood ratio and discrimination standard are calculated and exported according to rate, rate of failing to report and the false alert rate of hitting.
5. alertness detection method as described in claim 1, which is characterized in that the testing time is 5-30 minutes.
6. a kind of alertness detection system, including testing stimulus presentation device and data interpretation of result device, the testing stimulus
Presentation device is presented for stimulating, which is characterized in that the data result analytical equipment includes:
Newly-increased module when the target stimulation rule includes that specific two letters continuously occur, is surveyed for increasing target stimulation rule newly
Examination person presses feeler switch；
Generation module, for being pierced when occurring default target in the test screen of the testing stimulus presentation device within the testing time
When swashing image, receives the button operation of tester and test record is generated according to the button operation；
Analysis module, for analysis to be obtained and exported according to the test record as a result, the analysis result includes that accuracy rate refers to
Mark, reaction speed index, index of discrimination, likelihood ratio and discrimination standard.
7. alertness detection system as claimed in claim 6, which is characterized in that the analysis module includes:
Acquiring unit multiple hit the frequency, fails to report the frequency, the false frequency, target signal for being obtained according to the test record
Several and non-target signal number；
First computing unit hits the frequency, fails to report the frequency, the false frequency, target signal number and non-target signal number according to described
The accuracy rate index is obtained, the accuracy rate index includes hitting rate, rate of failing to report and false alert rate.
8. alertness detection system as claimed in claim 7, which is characterized in that the reaction speed index include reaction when and
Reaction efficiency.
9. alertness detection system as claimed in claim 7, which is characterized in that the analysis module further include:
Second computing unit calculates and exports the index of discrimination, seemingly for hitting rate, rate of failing to report and false alert rate according to
Right ratio and discrimination standard.
10. alertness detection system as claimed in claim 6, which is characterized in that the testing time is 5-30 minutes.
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