CN108186034A - A kind of driver fatigue detection device and method of work - Google Patents
A kind of driver fatigue detection device and method of work Download PDFInfo
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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
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
- A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
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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
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- A61B5/02405—Determining heart rate variability
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- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
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- A61B5/683—Means for maintaining contact with the body
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- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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Abstract
The invention discloses a kind of driver fatigue detection devices, and including auricle fixing bracket, auricle fixing bracket bottom connects metal by flexible hose and supports electrode, and metal support electrode is connected by flexible hose, and control unit is equipped in the middle part of flexible hose；Auricle fixing bracket bottom is equipped with reflective ear-lobe pulse transducer；First auricle fixing bracket rear portion is equipped with 3-axis acceleration sensor, gyroscope；Metal support electrode is equipped with EGC sensor；Control unit includes modulate circuit, vibrating motor, lithium battery, control chip.The present invention extracts driver in the case where not influencing normal driving operations and drives electrocardio, two-way pulse and head movement signal；Believable signal is screened with signal correlation, improves the reliability that system carries out fatigue driving judgement using physiological signal；The accuracy that system judges is high；Early stage of fatigue is predicted and forecasting fatigue accuracy is high.
Description
Technical field
The present invention relates to body state detection device field more particularly to a kind of driver fatigue detection device and work sides
Method.
Background technology
At present, China has become the Automobile Market of Global Auto manufacturing center and whole world maximum.Fatigue driving is
Refer to driver in continuous driving for a long time, generate the imbalance of physiological function and mental function, showing for driving efficiency decline occur
As.Driver's poor sleeping quality or deficiency, long-duration driving vehicle, are susceptible to fatigue.Fatigue driving influences whether driver
Attention, thinking judgement and body kinematics etc..Continue after fatigue drive vehicle, can feel sleepy drowsiness, weakness of limbs,
Absent minded, judgement declines or even occurs the memory of absent-minded or moment and disappears, and appearance action is delayed or too early,
Operation pauses or corrects improper insecurity of Denging, and road traffic accident easily occurs.Thus effectively detection driver is
No fatigue driving is to prevent the important means whether road traffic accident occurs.Traditional detection means or schemed by driver
As the action of analysis blink or analyzing driver drives to operate, the acceleration of footbrake when deviateing center line, vehicle braking such as vehicle
Spend information, but these methods detection be the tired later stage performance, it is as a result limited to the prevention effect of traffic accident；Using life
Reason signal can effectively be identified early fatigue, but traditional detection method needs to wear dedicated medical apparatus
Detection (such as by way of brain electricity), bulky device and complicated circuit can also cause the operation of driver and driving safety
Certain influence.And in practical running environments physiological signal easily by influence of noise, if to acquisition physiological signal not into
Row processing, may generate a large amount of false alarm and fail to report police.Therefore it is reliable to realize to design a kind of quick light device
Accurate driver tired driving detection is necessary.
Invention content
The purpose of the present invention is being directed to more than shortcoming, a kind of portable simple driver tired driving detection dress is provided
It puts and method of work, degree of fatigue can be detected in real time.
For achieving the above object, the technical scheme is that：A kind of driver fatigue detection device, including first
Auricle fixing bracket, the second auricle fixing bracket, the first auricle fixing bracket, the second auricle fixing bracket are separately fixed at driving
The left auricle of member, on auris dextra exterior feature；The first auricle fixing bracket bottom connects the first metal by the first flexible hose and supports
Electrode, the second auricle fixing bracket bottom connect the second metal by the second flexible hose and support electrode；First gold medal
Belong to and electrode, the second metal support electrode is supported to be connected by third flexible hose, control is equipped in the middle part of the third flexible hose
Unit；
The position that the first auricle fixing bracket bottom corresponds to driver's ear-lobe is equipped with the first reflective ear-lobe pulse biography
Sensor, the position that the second auricle fixing bracket bottom corresponds to driver's ear-lobe are equipped with the second reflective ear-lobe pulse transducer；Institute
State the first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer acquires the left ear of driver respectively, auris dextra
Pulse data；The first auricle fixing bracket rear portion is equipped with 3-axis acceleration sensor, gyroscope, and the 3-axis acceleration passes
The acceleration information that sensor, gyroscope acquisition driver head swing；
The first metal support electrode, the second support electrode medial surface are separately installed with the first EGC sensor, second
EGC sensor, first metal support electrode, the second support electrode are worn on driver's left clavicle, on right clavicle respectively,
It supports whole device and acquires driver's electrocardiogram (ECG) data in real time；
Described control unit include processing pulse data, acceleration information, electrocardiogram (ECG) data modulate circuit, according to detection tie
The vibrating motor of fruit response is capable of the lithium battery of wireless charging and judges driver fatigue value, the control for controlling vibrating motor
Chip；Described control unit is worn on driver's rear neck end；
The first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer are respectively by being placed in first
Conducting wire in flexible hose, the second flexible hose, third flexible hose is electrically connected with control unit, and by the left ear of acquisition, the right side
The pulse data of ear is transferred to control unit；The 3-axis acceleration sensor, gyroscope are by being placed in the first flexible hose,
Conducting wire in three flexible hoses is electrically connected with control unit, and the acceleration information that the driver head of acquisition is swung is transferred to
Control unit；First EGC sensor, the second EGC sensor respectively by the conducting wire that is placed in third flexible hose with
Control unit is electrically connected, and the electrocardiogram (ECG) data of acquisition is transferred to control unit；
The first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer, 3-axis acceleration sensing
Device, gyroscope, the first EGC sensor, the second EGC sensor, modulate circuit, vibrating motor, control chip pass through lithium electricity
Pond powers.
The first auricle fixing bracket, the second auricle fixing bracket use silica gel material；Described control unit is externally provided with
Lightweight PVC material shell；The first metal support electrode, the second support electrode use conductive metal shell.
The detection method of driver fatigue detection device of the present invention, includes the following steps
Step 1：By the first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer, acquisition drives
Member's ear-lobe pulse data, and is sent to control unit, control unit calculate left ear, auris dextra pulse data correlation coefficient ρe；
If a) correlation coefficient ρe>=0.9, then confirm that left ear, auris dextra pulse signal are effective, extract two-way pulse signal peak peak
Interval series carry out pulse frequency Variability Analysis；
If b) correlation coefficient ρe≤ 0.9, then two-way pulse signal and the first EGC sensor, the second electrocardio are calculated respectively
The Interspace interval of the electrocardiosignal of sensor acquisition, calculates related coefficient two-by-two, and selection obtains the two-way letter of maximum correlation coefficient
Number, carry out pulse frequency/heart rate variability analysis；
When related coefficient is all less than 0.5, then signal is interfered by very noisy, it is impossible to as fatigue driving judge according to
According to；
Step 3：Pulse frequency/heart rate variability calculating process is, calculates RR interval series PSD spectrums, using 0.15Hz as HF with
LF decomposition points calculate LF/HF, and the LF/HF that further fusion two paths of signals calculates；
Step 4：By 3-axis acceleration sensor and gyroscope, space coordinates three caused by head oscillation are acquired
The acceleration in direction, and data are reached control unit processing；
Step 5：The acceleration value in three directions and LF/HF numerical value that out-feed head is swung judge the tired journey of driver
Degree；If LF/HF is in normal range (NR), no matter whether head oscillation amplitude beyond threshold value, driver is without fatigue for judgement；If LF/HF
More than threshold value, then it is judged as moderate fatigue and carries out early warning；It is judged as major fatigue if the two is all beyond threshold value and alarms.
The beneficial effects of the invention are as follows：
(1) driver is extracted in the case where not influencing normal driving operations and drives electrocardio, two-way pulse and head movement letter
Number；
(2) using electrocardio, two-way pulse transducer, believable signal is screened with signal correlation, improves system using life
Manage the reliability that signal carries out fatigue driving judgement；
(3) the LF/HF energy ratios that two sequences of fuzzy Fusion calculate improve the accuracy that system judges；
(4) judge that decision adds the tired Judging index of physiological signal and head movement signal, relative to single finger
Mark further improves early stage of fatigue prediction and forecasting fatigue accuracy.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the first auricle fixing rack structure schematic diagram；
Fig. 3 supports electrode structure schematic diagram for the first metal；
Fig. 4 supports electrode structure schematic diagram for the second metal；
Fig. 5 generates flow chart for A, B sequence；
Fig. 6 generates T-sequence flow chart for the fusion of A, B sequence；
Fig. 7 is the flow chart for determining whether fatigue driving.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below in conjunction with attached drawing.
As shown in Figs. 1-3, a kind of driver fatigue detection device is fixed including the first auricle fixing bracket 1, the second auricle
Stent 2, the first auricle fixing bracket 1, the second auricle fixing bracket 2 are separately fixed at the left auricle of driver, on auris dextra exterior feature；Institute
It states 1 bottom of the first auricle fixing bracket and the first metal support electrode 5 is connected by the first flexible hose 3, second auricle is consolidated
2 bottom of fixed rack connects the second metal by the second flexible hose 4 and supports electrode 6；First metal supports electrode 5, second
Metal support electrode 6 is connected by third flexible hose 7, and 7 middle part of third flexible hose is equipped with control unit 8.
The position that first auricle fixing bracket, 1 bottom corresponds to driver's ear-lobe is equipped with the first reflective ear-lobe pulse biography
Sensor 9, the position that 2 bottom of the second auricle fixing bracket corresponds to driver's ear-lobe are equipped with the second reflective ear-lobe pulse transducer
(not shown)；The first reflective ear-lobe pulse transducer 9, the second reflective ear-lobe pulse transducer acquire driver respectively
The pulse data of left ear, auris dextra；First auricle fixing bracket, 1 rear portion is equipped with 3-axis acceleration sensor 10, gyroscope 11,
The 3-axis acceleration sensor 10, gyroscope 11 acquire the acceleration information that driver head swings.
First metal support electrode 5, second support 6 medial surface of electrode be separately installed with the first EGC sensor 12,
Second EGC sensor 13, the first metal support electrode 5, second support electrode 6 to be worn on driver's left clavicle, the right side respectively
On clavicle, support whole device and acquire driver's electrocardiogram (ECG) data in real time.
Described control unit 8 include processing pulse data, acceleration information, electrocardiogram (ECG) data modulate circuit (not shown),
The vibrating motor (not shown) responded according to testing result is capable of the lithium battery (not shown) of wireless charging and judges to drive
Member's fatigue data, the control chip (not shown) for controlling vibrating motor；Described control unit 8 is worn on driver's rear neck end.
The first reflective ear-lobe pulse transducer 9, the second reflective ear-lobe pulse transducer are respectively by being placed in
Conducting wire in one flexible hose 3, the second flexible hose 4, third flexible hose 7 is electrically connected with control unit 8, and by a left side for acquisition
Ear, auris dextra pulse data be transferred to control unit 8；The 3-axis acceleration sensor 10, gyroscope 11 are by being placed in first
Conducting wire in flexible hose 3, third flexible hose 4 is electrically connected with control unit 8, and is added what the driver head of acquisition swung
Speed data is transferred to control unit 8；First EGC sensor 12, the second EGC sensor 13 are respectively by being placed in third
Conducting wire in flexible hose 7 is electrically connected with control unit 8, and the electrocardiogram (ECG) data of acquisition is transferred to control unit 8.
The first reflective ear-lobe pulse transducer 9, the second reflective ear-lobe pulse transducer, 3-axis acceleration sensing
Device 10, gyroscope 11, the first EGC sensor 12, the second EGC sensor 13, modulate circuit, vibrating motor, control chip are equal
Pass through lithium battery power supply.
The first auricle fixing bracket 1, the second auricle fixing bracket 2 use silica gel material；8 peripheral hardware of described control unit
There is lightweight PVC material shell；The first metal support electrode 5, second supports electrode 6 to use conductive metal shell.
The detection method of the driver fatigue detection device of the present invention, includes the following steps
Step S1：After driver puts on monitoring device, starter.
Step S2：First EGC sensor 12 of the first metal support electrode 5, second heart of the second metal support electrode 6
Electric transducer 13, the first reflective ear-lobe pulse transducer 9 of the first auricle fixing bracket 1, the second auricle fixing bracket 2
Two reflective ear-lobe pulse transducers start to acquire, while 3-axis acceleration sensor 10 and gyroscope 11 acquire head oscillation
Acceleration information, the data acquired reach the control unit after neck 8.Data processing is carried out by algorithm and processing circuit.
In step s 2, the fatigue data of driver is judged by following steps.
Step S2-1：Pass through the first reflective ear-lobe pulse transducer 9, the second reflective ear-lobe pulse transducer ear-lobe arteries and veins
It fights sensor, data is reached control unit 8 and are handled, judge the related coefficient of left (Le) auris dextra (Re) pulse.
Step S2-2：Signal Analysis validity, and obtain RR interval series T.
Step S2-2-1：If related coefficient >=0.9, confirm that the pulse signal is credible, extract RR interval series, and it
Le and Re interval series name X, Y, A, B sequence are then assigned to respectively, so as to followed by fuzzy Fusion.
If related coefficient≤0.9, detect the peak position of R wave of electrocardiosignal and two-way pulse signal and extract two-way arteries and veins
It fights signal and electrocardiosignal RR interval series, calculates the related coefficient of above three sequence two-by-two, take maximum correlation coefficient ρ1,
With secondary big correlation coefficient ρ2.Extract ρ1And ρ2Sequence is shared in calculating, and is assigned to A sequences, generates ρ1Another sequence assign
It is worth and gives B sequences.
Step S2-2-2：Two RR interval series of A and B are merged, and further according to preset weights allocation strategy
Heart rate variability analysis is carried out, phase difference is less than 50ms between being corresponded to i-th in two RR sequences of A and B, exports eventually between heart bat
Phase sequence Ti=0.5Ai+0.5Bi；Otherwise, Ti=0.7Ai+0.3Bi；
Finally obtain RR interval series T after merging.
Step S2-3：The RR interval series PSD spectrums of the T-sequence after fusion are calculated, using 0.15Hz as HF (high frequency) and LF
Decomposition point calculates LF/HF.Wherein power spectral density (PSD) of the length of sequence T for N (it is required that N be more than 256), PSD can be by
Transformation (FFT) method or autoregressive sliding model (AR) etc. are obtained in quick Fu.
Step S2-4：By 3-axis acceleration sensor 10 and gyroscope 11, head oscillating acceleration data, and handle are acquired
Data reach control unit 8 and handle.The acceleration a of x, y, z axis direction can be measured by 3-axis acceleration sensor 10x, ay,
az, pass through following formula
Resultant acceleration s is calculated, and passes through gyroscope 11 and measures x, y and the angular velocity omega in z-axis directionx, ωyAnd ωz, lead to
The integral action to certain time is crossed, head is calculated in x, y and the radian θ of z-axis direction movement by following formulax, θyAnd θz。
θ=∑ ωi
θ is the θ referred tox, θyAnd θz, i is sampled point, by above formula it is estimated that head movement range.
Step S2-5：Control unit 8 can according to the signal of acquisition it is lasting calculate θ, s and LF/HF as a result, and will
They are sent into decision judgment rule.
During in view of driver fatigue, it may appear that it dozes off, the phenomenon that unconscious head shaking amplitude increases, meanwhile,
It is interior in the case where sympathetic and parasympathetic nerve regulation mechanism is adjusted, as the increase of physiologic fatigability degree can cause LF/HF to increase.It is comprehensive
It is as follows that driver head's motion state and physical signs propose tired determination decisions rule：
(1) work as LF/HF<When 0.6, s and θ no longer carry out decision judgement, and based on system is judged with physiological signal, judgement is at this time
Driver is in non-fatigue state；
(2)LF/HF>0.6, there is tired moderate early warning in judgement driver, and system reminds driver to pay attention to stopping by interaction
Breath；Start head movement detection, i.e. s and θ participative decision makings judge；
(3)LF/HF>0.6, s is counted in 1 minutes window and surpasses the number K1 of setting acceleration rate threshold sT (sT suggestions can
The acceleration value of 3 G is taken, can also be determined by many experiments result), the radian of the movement in x, y and z-axis direction in 1s
θx, θyAnd θzNumber K2 more than 25 degree, (threshold Km suggests taking 3 times, also may be used when as K1 and K2, any one is more than threshold Km time
To be configured by concrete condition), it is determined as major fatigue state.System forces to rest by interactive requirements driver.If
When K1 and K2 are less than Km times entirely, it is determined as moderate fatigue state.System reminds driver to need to rest by interaction.
Described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Claims (3)
1. a kind of driver fatigue detection device, which is characterized in that fix branch including the first auricle fixing bracket, the second auricle
Frame, the first auricle fixing bracket, the second auricle fixing bracket are separately fixed at the left auricle of driver, on auris dextra exterior feature；Described
One auricle fixing bracket bottom connects the first metal by the first flexible hose and supports electrode, the second auricle fixing bracket bottom
Portion connects the second metal by the second flexible hose and supports electrode；The first metal support electrode, the second metal support electrode
It is connected by third flexible hose, control unit is equipped in the middle part of the third flexible hose；
The position that the first auricle fixing bracket bottom corresponds to driver's ear-lobe is equipped with the first reflective ear-lobe pulse transducer,
The position that second auricle fixing bracket bottom corresponds to driver's ear-lobe is equipped with the second reflective ear-lobe pulse transducer；Described first
Reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer acquire the Pulse Rate of the left ear of driver, auris dextra respectively
According to；The first auricle fixing bracket rear portion be equipped with 3-axis acceleration sensor, gyroscope, the 3-axis acceleration sensor,
The acceleration information that gyroscope acquisition driver head swings；
The first metal support electrode, the second support electrode medial surface are separately installed with the first EGC sensor, the second electrocardio
Sensor, first metal support electrode, the second support electrode are worn on driver's left clavicle, on right clavicle respectively, support
Whole device simultaneously acquires driver's electrocardiogram (ECG) data in real time；
Described control unit include processing pulse data, acceleration information, electrocardiogram (ECG) data modulate circuit, ring according to testing result
The vibrating motor answered is capable of the lithium battery of wireless charging and judges driver fatigue value, the control core for controlling vibrating motor
Piece；Described control unit is worn on driver's rear neck end；
The first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer are respectively by being placed in the first flexibility
Conducting wire in hose, the second flexible hose, third flexible hose is electrically connected with control unit, and by the left ear of acquisition, auris dextra
Pulse data is transferred to control unit；The 3-axis acceleration sensor, gyroscope are soft by being placed in the first flexible hose, third
Property hose in conducting wire be electrically connected with control unit, and the acceleration information that the driver head of acquisition is swung is transferred to control
Unit；First EGC sensor, the second EGC sensor pass through the conducting wire being placed in third flexible hose and control respectively
Unit is electrically connected, and the electrocardiogram (ECG) data of acquisition is transferred to control unit；
The first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer, 3-axis acceleration sensor, top
Spiral shell instrument, the first EGC sensor, the second EGC sensor, modulate circuit, vibrating motor, control chip are supplied by lithium battery
Electricity.
2. driver fatigue detection device according to claim 1, which is characterized in that the first auricle fixing bracket,
Second auricle fixing bracket uses silica gel material；Described control unit is externally provided with lightweight PVC material shell；The first metal branch
Support electrode, the second support electrode uses conductive metal shell.
3. the detection method of driver fatigue detection device according to claim 1, which is characterized in that include the following steps
Step 1：By the first reflective ear-lobe pulse transducer, the second reflective ear-lobe pulse transducer, driver's ear is acquired
Hang down pulse data, and be sent to control unit, control unit calculate left ear, auris dextra pulse data correlation coefficient ρe；
If a) correlation coefficient ρe>=0.9, then confirm that left ear, auris dextra pulse signal are effective, extract two-way pulse signal Interspace interval sequence
Row carry out pulse frequency Variability Analysis；
If b) correlation coefficient ρe≤ 0.9, then two-way pulse signal and the first EGC sensor, the second electrocardio sensing are calculated respectively
The Interspace interval of the electrocardiosignal of device acquisition calculates related coefficient two-by-two, and selection obtains the two paths of signals of maximum correlation coefficient, into
Row pulse frequency/heart rate variability analysis；
When related coefficient is all less than 0.5, then signal is interfered by very noisy, it is impossible to as fatigue driving basis for estimation；
Step 3：Pulse frequency/heart rate variability calculating process is to calculate RR interval series PSD spectrums, is divided using 0.15Hz as HF and LF
Solution point calculates LF/HF, and the LF/HF that further fusion two paths of signals calculates；
Step 4：By 3-axis acceleration sensor and gyroscope, three directions of space coordinates caused by head oscillation are acquired
Acceleration, and data reach control unit processing；
Step 5：The acceleration value in three directions and LF/HF numerical value that out-feed head is swung judge the degree of fatigue of driver；
If LF/HF is in normal range (NR), no matter whether head oscillation amplitude beyond threshold value, driver is without fatigue for judgement；If LF/HF is more than
Threshold value is then judged as moderate fatigue and carries out early warning；If three directions acceleration value and LF/HF numerical value all beyond threshold value if sentence
Break as major fatigue and alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102175.1A CN108186034B (en) | 2018-02-01 | 2018-02-01 | Driver fatigue detection device and working method |
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| CN109147951A (en) * | 2018-09-19 | 2019-01-04 | 中国人民解放军第三0五医院 | A kind of alarming method by monitoring of mental alertness |
| CN110720903A (en) * | 2019-10-22 | 2020-01-24 | 深圳旭宏医疗科技有限公司 | Electrocardiosignal processing method and device |
| CN112641440A (en) * | 2019-10-28 | 2021-04-13 | 西安邮电大学 | Method for detecting fatigue of Bluetooth headset |
| CN113438926A (en) * | 2019-06-25 | 2021-09-24 | 疲劳科学研究(广州)有限公司 | Information processing device, information processing method and system |
| CN108186034B (en) * | 2018-02-01 | 2023-04-07 | 福建工程学院 | Driver fatigue detection device and working method |
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