CN106236046A - Driver fatigue monitoring system - Google Patents
Driver fatigue monitoring system Download PDFInfo
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- CN106236046A CN106236046A CN201610800995.9A CN201610800995A CN106236046A CN 106236046 A CN106236046 A CN 106236046A CN 201610800995 A CN201610800995 A CN 201610800995A CN 106236046 A CN106236046 A CN 106236046A
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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
-
- 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
-
- 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
-
- 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
- A61B5/168—Evaluating attention deficit, hyperactivity
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
- A61B5/224—Measuring muscular strength
- A61B5/225—Measuring muscular strength of the fingers, e.g. by monitoring hand-grip force
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6893—Cars
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7264—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/7405—Details of notification to user or communication with user or patient ; user input means using sound
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
- B60K28/06—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- 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
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/20—Workers
- A61B2503/22—Motor vehicles operators, e.g. drivers, pilots, captains
Abstract
The present invention be more particularly directed to a kind of driver fatigue monitoring system, including signal acquisition module, control module and alarm module, described signal acquisition module is for gathering the heart rate of driver, breathing, pulse, steering wheel grip and vehicle modified line frequency;The signal that signal acquisition module is collected by control module obtains the level of fatigue of driver after being analyzed processing, and sends according to level of fatigue and control signal to alarm module accordingly and drive alarm module action.Variation of Drivers ' Heart Rate, breathing, pulse, steering wheel grip and vehicle these parameters of modified line frequency can reflect the fatigue state of driver, by to the monitoring of these information and process, can the most reliably, accurately know the fatigue state of driver, simultaneously, this system, for different drivers, can be monitored accurately.
Description
Technical field
The present invention relates to traffic safety technical field, particularly to a kind of driver fatigue monitoring system.
Background technology
The whole world there are about 1,200,000 people every year and dies from vehicle accident, is shown by research, and fatigue driving is to cause road traffic thing
Therefore one of major reason, the harm brought in order to avoid fatigue driving, a lot of people develop driver fatigue monitoring system, always
For knot, driver fatigue monitoring method is generally divided into Subjective fatigue monitoring and objective fatigue monitoring.At present, based on driving fatigue
Detection method focus primarily upon the monitoring and warning of objective fatigue, objective fatigue monitoring is mainly by various detecting instruments driving
The specificity of the person's of sailing body index or driving behavior state is monitored in real time, objective evaluation and carry out point out early warning method.
There is many deficiencies in these monitoring systems existing: one, puies forward driver's fatigue degree's feature both at home and abroad at present
The signal collected, still among research, is extracted fatigue characteristic by time domain or frequency domain method, exists not by the method taken
In place of foot, for combining human body physiological medical science signal and the driver fatigue feature phases such as the breathing of theory of Chinese medical science, pulse and heart rate
Close sex chromosome mosaicism, the most not yet there is effective characteristic recognition method, thus be difficult to driver's fatigue degree is drawn accurately
Divide and sort out;Its two, due to major part fatigue monitoring sensor be contact, signals collecting when driving is easily subject to
Driver and the impact of environment, it is easy to cause driver uncomfortable, affect its driver behavior, thus be difficult to driver fatigue
Accurately identify, and the method environment the most to external world that is monitored by the untouchable instrument such as vehicle-mounted camera and radar
Dependency is relatively big, easily causes monitoring accuracy the highest because of environmental change;Its three, more existing monitoring methods are not yet to driver
Degree of fatigue and monitoring index between relation well quantify, not accurate enough to tired classification;Its four, due to drive
The individual variation of member and the impact of environment, there is limitation in the monitoring means of single monitoring index.
Summary of the invention
It is an object of the invention to provide a kind of driver fatigue monitoring that can accurately monitor driver fatigue state is
System.
For realizing object above, the technical solution used in the present invention is: a kind of driver fatigue monitoring system, including signal
Acquisition module, control module and alarm module, described signal acquisition module is for gathering the heart rate of driver, breathing, arteries and veins
Fight, steering wheel grip and vehicle modified line frequency;The signal that signal acquisition module is collected by control module is analyzed processing
After obtain the level of fatigue of driver, and send according to level of fatigue and control signal to alarm module accordingly and drive alarm module
Action.
Compared with prior art, there is techniques below effect in the present invention: Variation of Drivers ' Heart Rate, breathing, pulse, steering wheel grip
And vehicle these parameters of modified line frequency can reflect the fatigue state of driver, by the monitoring of these information and place
Reason, it is possible to the most reliably, accurately knowing the fatigue state of driver, meanwhile, this system, can for different drivers
Enough monitor accurately.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention.
Detailed description of the invention
Below in conjunction with Fig. 1, the present invention is described in further detail.
Refering to Fig. 1, a kind of driver fatigue monitoring system, including signal acquisition module 10, control module 20 and warning
Module 30, described signal acquisition module 10 is for gathering the heart rate of driver, breathing, pulse, steering wheel grip and vehicle
Modified line frequency;Control module 20 obtains the fatigue of driver to the signal that signal acquisition module 20 collects after being analyzed processing
Grade, and send according to level of fatigue and control signal to alarm module 30 accordingly and drive alarm module 30 action.Driver's heart
Rate, breathing, pulse, steering wheel grip and vehicle these parameters of modified line frequency can reflect the fatigue state of driver, logical
Cross the monitoring to these information and process, it is possible to the most reliably, accurately knowing the fatigue state of driver, meanwhile, this is
System, for different drivers, can be monitored accurately.
Specifically, in order to gather above-mentioned information, described signal acquisition module 10 include for gather Variation of Drivers ' Heart Rate and
The heart rate respiration pickup 11 of respiration information, for gathering the pulse transducer 12 of driver's pulse signal, for gathering driving
The holding power transducer 13 of member's steering wheel grip and for the ccd sensor 14 of collection vehicle modified line frequency.Heart rate breathes sensing
Device 11, pulse transducer 12 and holding power transducer 13 are all the sensors of comparative maturity, can directly purchase and use,
Ccd sensor 14 itself is also can be firsthand, and ccd sensor main collection vehicle front traffic information here is the most right
Image information processes, thus obtains vehicle modified line frequency information, and vehicle modified line frequency namely vehicle become in motion
The most why the frequency of road behavior, introduce this parameter, is because driver under waking state, and vehicle is typically all at car
Travel in road, unless there are lane change demand, otherwise lane change will not occur easily, but, it is in the driver of fatigue state the most not
With, owing to its attention is concentrated not, usually can not maintain in same road, lane change phenomenon often occurs.Therefore, it is here
Judge the fatigue state of driver the most accurately, except the monitoring heart rate of driver itself, breathing, pulse and grip
Outside information, also vehicle modified line frequency is monitored, substantially increases monitoring, the accuracy judged.
The structure of control module 20 has a variety of, and, described control module 20 includes that signal is pre-in the present embodiment preferably
Processing unit 21, fatigue characteristic extraction unit 22, fatigue characteristic processing unit 23 and level of fatigue identifying unit 24;Signal is pre-
Processing unit 21 receives what heart rate respiration pickup 11, pulse transducer 12, holding power transducer 13 and ccd sensor 14 sent
Information also uses the time domain and frequency domain combined analyzing and processing technology such as small echo, wigner-ville that signal is filtered noise reduction, preemphasis
Process, set up the time-frequency image characterizing driver fatigue information;Fatigue characteristic extraction unit 22 is for refining based on heart rate, breathing
And driver's sensitive features of pulse, set up the fatigue characteristic vector being closely related with driver's fatigue degree;Fatigue characteristic
Fatigue characteristic vector is analyzed processing the information source obtaining quantifying by processing unit 23 by D-S evidence theory;Level of fatigue
Identifying unit 24 is used for quantifying each information source and tired classification rule relation, and degree of fatigue is divided into fatigue clear-headed, slight, tired
Labor and tired four grades of severe, and control signal to alarm module 30 accordingly according to different grade output.By arranging
Signal Pretreatment unit 21, the signal exporting each sensor carries out pretreatment so that data are the most unified, more convenient follow-up enter
Row processes.The information that each sensor is collected is the most, here by fatigue characteristic extraction unit 22 to the most important one
A little characteristic informations extract so that during subsequent analysis, speed is faster, the process that Simplified analysis processes.Meanwhile, by driving
The degree of fatigue of member quantifies, and conveniently makes different warning actions for different degree of fatigues.
Preferably, described alarm module 30 includes phonation unit 31 and luminescence unit 32;When level of fatigue identifying unit
24 judge driver as time clear-headed, level of fatigue identifying unit 24 does not send and controls signal to alarm module 30;Work as level of fatigue
Identifying unit 24 judges when driver is slight tired, level of fatigue identifying unit 24 output control signals to phonation unit 31 to
Giving music tip, now driver is not unusual fatigue, it is only necessary to somewhat remind lower the most permissible.When level of fatigue judges single
When unit 24 judges driver as fatigue, level of fatigue identifying unit 24 outputs control signals to phonation unit 31 and luminescence unit
32, give sound and light warning, now, driver has certain fatigue strength, needs to carry out acousto-optic stimulation so that it is keep clear
The state of waking up.When level of fatigue identifying unit 24 judges that driver is severe fatigue, level of fatigue identifying unit 24 output controls
Signal, to phonation unit 31 and luminescence unit 32, gives rapid audible alarm and flashing light alarm.By to different fatigue degree
Driver carry out stimulation in various degree, it is ensured that it is in waking state, can reduce system energy consumption, can allow again driver's
Experience the most comfortable.
In general, the when of the most tired, the security situation speed of driver is the lowest, namely: when driver regains consciousness, its
Can travel with speed faster, when driver is the most tired, its travel speed is the most dangerous, therefore its safety traffic
Speed is more much smaller than under waking state.In the present embodiment preferably, described signal acquisition module 10 includes for collection vehicle
The vehicle speed sensor 15 of speed, alarm module 30 includes brake units 33, in level of fatigue identifying unit 24 storage have with slightly
Tired, tired and that severe fatigue is corresponding speed upper limit threshold V1, V2, V3;The car that level of fatigue identifying unit 24 receives
Brake units 33 is output control signals to car when speed information is more than speed upper limit threshold corresponding to current driver's level of fatigue
Implement limiting brake.By arranging speed upper limit threshold so that driver, under different degree of fatigue states, all right sails
Below safe speed, the traffic safety of driver is greatly improved.
The position of each sensor has a lot, in order to not affect the driving comfort of driver, in the present embodiment preferably
Ground, described heart rate respiration pickup 11 is arranged on seat belt;Pulse transducer 12 is watch style, is worn on the hands of driver
On arm;Holding power transducer 13 is arranged on the steering wheel.So, driver has only to dress watch style pulse transducer 12, driving
Time fasten one's safety belt, hold when travelling steering wheel can allow system to corresponding information, very easy to use
With comfortable.
Claims (6)
1. driver fatigue monitoring system, it is characterised in that: include signal acquisition module (10), control module (20) and
Alarm module (30), described signal acquisition module (10) is for gathering the heart rate of driver, breathing, pulse, steering wheel grip
And vehicle modified line frequency;Control module (20) obtains after being analyzed the signal that signal acquisition module (20) collects processing
The level of fatigue of driver, and send according to level of fatigue control signal to accordingly alarm module (30) drive alarm module
(30) action.
2. driver fatigue monitoring system as claimed in claim 1, it is characterised in that: described signal acquisition module (10) bag
Include the heart rate respiration pickup (11) for gathering Variation of Drivers ' Heart Rate and respiration information, for gathering the arteries and veins of driver's pulse signal
Fight sensor (12), for gathering the holding power transducer (13) of driver's steering wheel grip and for collection vehicle modified line frequency
Ccd sensor (14).
3. driver fatigue monitoring system as claimed in claim 2, it is characterised in that: described control module (20) includes letter
Number pretreatment unit (21), fatigue characteristic extraction unit (22), fatigue characteristic processing unit (23) and level of fatigue judge single
Unit (24);
Signal Pretreatment unit (21) receive heart rate respiration pickup (11), pulse transducer (12), holding power transducer (13) with
And the information that sends of ccd sensor (14) use the time domain and frequency domain combined analyzing and processing technology such as small echo, wigner-ville to letter
Number be filtered noise reduction, preemphasis processes, and sets up the time-frequency image characterizing driver fatigue information;
Fatigue characteristic extraction unit (22) for refine driver's sensitive features based on heart rate, breathing and pulse, set up with
The fatigue characteristic vector that driver's fatigue degree is closely related;
Fatigue characteristic vector is analyzed processing the letter obtaining quantifying by fatigue characteristic processing unit (23) by D-S evidence theory
Breath source;
Level of fatigue identifying unit (24) is used for quantifying each information source and tired classification rule relation, is divided into degree of fatigue clearly
Wake up, slight tired, tired and tired four grades of severe, and control signal to accordingly warn mould according to different grade output
Block (30).
4. driver fatigue monitoring system as claimed in claim 3, it is characterised in that: described alarm module (30) includes sending out
Sound unit (31) and luminescence unit (32);
When level of fatigue identifying unit (24) judges driver as regaining consciousness, level of fatigue identifying unit (24) does not send control letter
Number to alarm module (30);
When level of fatigue identifying unit (24) judges driver as slight fatigue, level of fatigue identifying unit (24) output controls
Signal gives music tip to phonation unit (31);
When level of fatigue identifying unit (24) judges driver as fatigue, level of fatigue identifying unit (24) output control signal
To phonation unit (31) and luminescence unit (32), give sound and light warning;
When level of fatigue identifying unit (24) judges driver as severe fatigue, level of fatigue identifying unit (24) output controls
Signal, to phonation unit (31) and luminescence unit (32), gives rapid audible alarm and flashing light alarm.
5. driver fatigue monitoring system as claimed in claim 4, it is characterised in that: described signal acquisition module (10) bag
Including the vehicle speed sensor (15) for collection vehicle speed, alarm module (30) includes brake units (33), and level of fatigue judges
In unit (24), storage has tired with slight, tired and severe tired corresponding speed upper limit threshold V1, V2, V3;Tired etc.
Output during level identifying unit (24) speed information that the receives speed upper limit threshold corresponding more than current driver's level of fatigue
Control signal to brake units (33) and vehicle is implemented limiting brake.
6. driver fatigue monitoring system as claimed in claim 5, it is characterised in that: described heart rate respiration pickup (11)
It is arranged on seat belt;Pulse transducer (12) is watch style, is worn on the arm of driver;Holding power transducer (13) is arranged
On the steering wheel.
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CN201610800995.9A CN106236046A (en) | 2016-09-05 | 2016-09-05 | Driver fatigue monitoring system |
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CN201610800995.9A CN106236046A (en) | 2016-09-05 | 2016-09-05 | Driver fatigue monitoring system |
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Cited By (27)
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CN106976460A (en) * | 2017-05-18 | 2017-07-25 | 益阳市首航电子科技有限公司 | Safe driving of vehicle TT&C system |
CN107117027A (en) * | 2017-04-28 | 2017-09-01 | 安徽江淮汽车集团股份有限公司 | Vehicular intelligent control method and system based on fatigue monitoring |
CN107212870A (en) * | 2017-06-28 | 2017-09-29 | 上海电力学院 | A kind of ear clip device for detecting driver status |
CN107490952A (en) * | 2017-10-13 | 2017-12-19 | 车展交通器材(台山)有限公司 | A kind of wrist-watch of integrating automotive remote-control key |
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CN110371133A (en) * | 2019-06-28 | 2019-10-25 | 神龙汽车有限公司 | Fatigue of automobile driver detection system and method |
CN110766913A (en) * | 2019-11-22 | 2020-02-07 | 上海工程技术大学 | Fatigue driving monitoring system based on PVDF piezoelectric film sensor |
CN110901385A (en) * | 2019-12-31 | 2020-03-24 | 南斗六星系统集成有限公司 | Active speed limiting method based on fatigue state of driver |
CN112116783A (en) * | 2019-06-20 | 2020-12-22 | 株式会社日立制作所 | Method and device for monitoring fatigue driving |
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