CN105857075A - Automobile-fatigue-driving safety protecting system and method - Google Patents
Automobile-fatigue-driving safety protecting system and method Download PDFInfo
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- CN105857075A CN105857075A CN201610310447.8A CN201610310447A CN105857075A CN 105857075 A CN105857075 A CN 105857075A CN 201610310447 A CN201610310447 A CN 201610310447A CN 105857075 A CN105857075 A CN 105857075A
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- fatigue
- open degree
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Classifications
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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
- 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
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
-
- 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
- B60K28/063—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 preventing starting of vehicles
-
- 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
- B60K28/066—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 actuating a signalling device
-
- 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
- B60T7/14—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated upon collapse of driver
-
- 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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/02—Active or adaptive cruise control system; Distance control
Abstract
The invention relates to the technical field of automobile electronics, in particular to an automobile-fatigue-driving safety protecting system and method. The system comprises a fatigue driving early-warning system, a system switch input unit, a system opening-degree signal unit, an engine-rotating-speed signal unit, an automobile-speed signal unit, a system controller, an engine controller, an oil pump relay unit and an electronic stable control system. The method includes the steps that the system controller conducts fatigue level judgment according to various input signals and outputs corresponding instructions to the engine controller, the oil pump relay unit and the electronic stable control system according to fatigue levels; the opening degree of an engine throttle is limited according to the identified fatigue strength of a driver, and whether fuel cutting and braking are carried out or not is determined. In this way, when the driver is in the low fatigue strength state, driving is conducted at the safe automobile speed without fuel cutting and limitation of the opening degree of the throttle, and traffic accidents caused by wrongly treading the throttle are effectively avoided; meanwhile, when the fatigue strength is excessively large, fuel cutting and emergency braking are conducted, and personal safety is guaranteed.
Description
Technical field
The present invention relates to technical field of automotive electronics, be specifically related to fatigue drive of car security protection
System and method.
Background technology
Motor vehicle travels for a long time, and driver is easy to produce sense of fatigue, and work pressure the most now
Power is big, and during fatigue driving, driver is slow in reacting, is difficult to when there is emergency make in time
Process.Additionally, some high capacity waggons are relatively big due to inertia, its braking distance is oversize, it is easier to
Traffic accident occurs.According to investigation, China's road traffic accident is the most in rising trend, wherein
The proportion that the traffic accident caused due to fatigue driving accounts for traffic accident is the biggest.Therefore, invention one
The security incident that the method for kind causes to avoid fatigue driving is necessary.
Summary of the invention
For solving above-mentioned technical problem, the invention provides one and contribute to reducing fatigue driving friendship
The fatigue drive of car security protection system of interpreter's event and method.
For one fatigue drive of car security protection system of the present invention, its technical scheme is, bag
Include: driver fatigue monitor system, system switching input block, accelerator opening amount signal unit, send out
Motivation tach signal unit, GES unit, system controller, engine controller, oil
Pump relay unit and electronic stabilizing control system;
Described driver fatigue monitor system output driver fatigue strength S, system switching input list
Unit's output enables signal, accelerator opening amount signal unit output accelerator open degree P, engine speed letter
Number unit output engine rotating speed n, GES unit output speed v to system controller,
Described system controller carries out level of fatigue judgement according to the various signals of input, and according to fatigue
Grade output command adapted thereto controls to engine controller, FP Fuel Pump Relay unit and electronic stability
System.
Further, video and music entertainment system main frame and car body controller, described audio-visual joy are also included
Music system main frame is voice message signal, described vehicle body in receiving the car that system controller sends
The vehicle body that controller sends for receiving system controller is double dodges alarm signal.
Further, described system controller and driver fatigue monitor system, system switching input
Unit, accelerator opening amount signal unit, engine rotational speed signal unit, GES unit, shadow
Sound entertainment systems main frame, between car body controller and electronic stabilizing control system by CAN lead to
Letter.
For one fatigue drive of car safety protecting method of the present invention, its technical scheme is, connects
Receive driver fatigue strength signal, judge level of fatigue according to driver fatigue intensity, and according to
Level of fatigue output corresponding actions:
When being judged as without fatigue driving, driver ask accelerator open degree P as output throttle
Aperture;
When being judged as slight fatigue driving, if driver asks accelerator open degree P less than throttle
Aperture limit value Plim, then driver asks accelerator open degree P as output accelerator open degree;If driving
The person of sailing asks accelerator open degree P to exceed accelerator open degree limit value Plim, then by accelerator open degree limit value PlimMake
For output accelerator open degree;
When being judged as moderate fatigue driving, output accelerator open degree is 0;
When being judged as severe fatigue driving, output accelerator open degree is 0, and carries out oil-break and tight
Bring to a halt.
Further, described level of fatigue is according to concrete fatigue strength SNJudge:
As 0≤SN≤ a, for without fatigue driving;
As a < SN≤ b, for slight fatigue driving;
As b < SN≤ c, for moderate fatigue driving;
As c < SN≤ 1, for severe fatigue driving;
Described concrete fatigue strength SNFor driver fatigue strength S normalized income value, institute
State numerical value a, b, c and be respectively slight fatigue driving, moderate fatigue driving, severe fatigue driving
Threshold value.
Further, during slight fatigue driving, described accelerator open degree limit value PlimCalculating process such as
Under:
Use and demarcate the method tabled look-up, according to concrete fatigue strength SNWorth go out corresponding initial
Accelerator open degree limit value P (SN)lim;
Calculate speed considerations factor f of engine speed n1(n), describedInstitute
State PlimN () is the safe accelerator aperture limit value under different engine, obtained by Experimental Calibration
Take;
Calculate the speed compensating factor f of speed v2(v), describedDescribed Plim(v) be
Safe accelerator aperture limit value under different speeds, is obtained by Experimental Calibration;
Described accelerator open degree limit value Plim=P (SN)lim×f1(n)×f2(v)。
Further, x is worked as1< SN< x2Time, described initial accelerator open degree limit value P (SN)limPass through
Linear interpolation is calculated, i.e.Described f (x1) and f (x2)
For concrete fatigue strength SNTake x respectively1And x2Time corresponding initial accelerator open degree limit value.
Further, during described slight fatigue driving, in sending car, voice message signal prompt is driven
The person of sailing is in slight fatigue driving state.
Further, during described moderate fatigue driving, in sending car, voice message signal prompt is driven
The person of sailing is in danger and sails state.
Further, during described severe fatigue driving, in sending car, voice message signal prompt is driven
The person of sailing is in danger and sails state, sends the double alarm signal of dodging of vehicle body, controls vehicle oil-break simultaneously,
And carry out emergency brake.
Beneficial effects of the present invention: limit engine oil according to the driver fatigue intensity identified
Door aperture, whether oil-break, whether brake, make driver can slight tired time, constantly
Oil also limits safe speed under accelerator open degree and drives, and is prevented effectively from and causes because of mis-accelerator pressing
Traffic accident;Carry out oil-break and emergency brake when fatigue strength is excessive, it is ensured that people simultaneously
Body safety.And due to through slight tired and moderate fatigue lower limit accelerator open degree, engine
System meeting oil-break, combustion torque reduces, and engine speed can return to idle conditions, and speed is also
Can be reduced to equally vehicle stabilization travel minimum speed, emergency brake under severe fatigue, no
The harm personal safeties such as vehicle rollover can be caused.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention a kind of fatigue drive of car security protection system;
Fig. 2 is the control flow chart of the present invention a kind of fatigue drive of car safety protecting method;
Accelerator open degree limit value P when Fig. 3 is the present invention slight fatigue drivinglimCalculating process;
In figure:
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As it is shown in figure 1, a kind of fatigue drive of car security protection system, pre-including fatigue driving
Alarm system 1, system switching input block 2, accelerator opening amount signal unit 3, engine speed
Signal element 4, GES unit 5, system control (ECU) 6, engine controller (EMS)
7, video and music entertainment system main frame 8, car body controller (BCM) 9, FP Fuel Pump Relay unit
10, brake signal and electronic stabilizing control system (ESC) 11.Driver fatigue monitor system
1, system switching input block 2, accelerator opening amount signal unit 3, engine rotational speed signal unit
4 are communicated with system controller 6 by CAN line with GES unit 5, and system controls 6
Being communicated with engine controller 7 by CAN line, system controller 6 exports oil-break signal also
Being sent to FP Fuel Pump Relay unit 10 by rigid line, in system controller 6 exports car, voice carries
Showing signal and communicated with video and music entertainment system main frame 8 by CAN line, system controller 6 is defeated
Going out vehicle body double sudden strain of a muscle alarm signal and communicated with car body controller 9 by CAN line, system controls
Device 6 is exported brake signal and is communicated with electronic stabilizing control system 11 by CAN line.
It is illustrated in figure 2 the control flow chart of a kind of fatigue drive of car safety protecting method, tool
Body illustrates with the following Examples:
System switching input block 2 controls startup and the closedown of this system, fatigue driving early warning system
System 1 output driver fatigue strength S, and export to system control 6 by CAN line, its
In, the calculation of the person of sailing fatigue strength S is prior art.
After system switching input block 2 controls the startup of this system, driver fatigue monitor system 1
Output driver fatigue strength S, engine rotational speed signal unit 3 output engine rotating speed n with
And GES unit 4 exports speed v and controls 6 to system.System controls 6 and will receive
Driver fatigue strength S is normalized, and obtains SN, i.e. 0≤SN≤1.And by normalizing
Fatigue driving strength S after changeNFour grades are judged: drive without fatigue according to driving intensity limit value
Sail, slight fatigue driving, moderate fatigue driving and severe fatigue driving.Basis for estimation is: when
0≤SN≤ 0.05, for without fatigue driving;As 0.05 < SN≤ 0.5, for slight fatigue driving;When
0.5 < SN≤ 0.8, for moderate fatigue driving;As 0.8 < SN≤ 1, for severe fatigue driving.Its
In, 0.05,0.5,0.8 is respectively slight fatigue driving, moderate fatigue driving, severe fatigue
Drive threshold value, can demarcate according to actual conditions.
(1) when being judged to without fatigue driving, this system, without any operation, maintains driver's meaning
Figure, i.e. accelerator open degree limit value PlimAccelerator open degree P, P is asked equal to driverlim=P.
(2) when being judged to slight fatigue driving, according to concrete fatigue strength SN, engine
Rotating speed n and speed v limit accelerator open degree P in various degreelim。
In the embodiment that the present invention provides, first according to fatigue strength SNCalculate initial throttle to open
Degree limit value P (SN)lim.Work as SNDuring=[0.05,0.1,0.15,0.2,0,25,0.3,0.35,0.4,0.45,0.5],
Initial accelerator open degree limit value
P(SN)lim=[60%, 56%, 52%, 46%, 40%, 30%, 18%, 8%, 6%, 5%], this value is by mark
Surely table look-up acquisition, i.e. work as SNWhen=0.1, P (SN)lim=56%;Work as SNWhen=0.15,
P(SN)lim=52%, by that analogy.Work as x1< SN< x2Time, initial accelerator open degree limit value P (SN)lim
It is calculated by linear interpolation, i.e.f(x1) and
f(x2) it is concrete fatigue strength SNTake x respectively1And x2Time corresponding initial accelerator open degree limit value.
Such as 0.1 < SNDuring < 0.15, haveI.e.
P(SN)lim=52%+ (0.15-SN) × 80%.By that analogy, the initial oil of other segments is obtained
Door aperture limit value P (SN)lim.System controller 6 according to engine speed n and speed v to initially
Accelerator open degree limit value compensates, and obtains final accelerator open degree limit value Plim, its computing formula
For: Plim=P (SN)lim×f1(n)×f2(v)。
Wherein, f1N () is the speed considerations factor of engine speed n;f2V () is the speed of speed v
Compensating factor.By test collection, speed is constant, engine speed changes, and starts in difference
Carrying out organizing test under machine rotating speed, test calibration goes out the safe accelerator aperture limit value under different rotating speeds more
PlimN (), finally obtains the speed considerations factor.I.e. when engine speed n=n0Time, speed considerations
Factor f1(n0) have:
Speed considerations factor f under all engine speed is obtained by the method1(n)。
In like manner, engine speed is constant, speed changes in test collection, enters under different speeds
Row organizes test more, and test calibration goes out the safe accelerator aperture limit value P under different speedlim(v),
After obtain the speed considerations factor.I.e. when speed v=v0Time, speed considerations factor f2(v0) have:
Speed considerations factor f under all speeds is obtained by the method2(v)。
As it is shown on figure 3, system control block figure when being slight fatigue driving.
The throttle commands of accelerator open degree value P received is passed through CAN by system controller ECU6
Line is sent to engine controller 7: if driver asks accelerator open degree value P less than Plim, then sail
Member's request accelerator open degree value P is sent to engine controller 7 by CAN line;If driver
Request accelerator open degree value P is more than or equal to Plim, then by accelerator open degree limit value PlimThrottle commands
Driver is replaced to ask accelerator open degree value P to be sent to engine controller 7 by CAN line.
Meanwhile, system controller ECU6 sends voice message signal in car, and is sent out by CAN line
Give video and music entertainment system main frame 8, be in slight fatigue driving by voice reminder driver
State.
(3) when being judged to moderate fatigue driving, limit value accelerator open degree is 0, i.e. Plim=0,
Now gas pedal is inoperative, i.e. accelerator open degree value 0 instruction replacement is driven by system controller 6
The person of sailing asks accelerator open degree value P to be sent to engine controller 9 by CAN line.Meanwhile,
System controller 6 sends voice message signal in car, and is sent to audio-visual joy by CAN line
Music system main frame 8, has been in dangerous driving state by voice reminder driver.
(4) when being judged to severe fatigue driving, by system controller 6 by accelerator open degree value 0
It is sent to engine controller 7, i.e. P by CAN linelim=0, to FP Fuel Pump Relay unit
10 send oil-break instruction, system oil-break;Simultaneously and by CAN line brake instruction started to
Electronic stabilizing control system 11, car is brought to a halt;Meanwhile, system controller 6 sends car
Interior voice message signal, and it is sent to video and music entertainment system main frame 8 by CAN line, pass through
Voice reminder driver has been in dangerous driving state.It addition, system controller 6 sends vehicle body
Double sudden strain of a muscle alarm signals, and it is sent to car body controller 11 by CAN line, it is achieved car light is double to be dodged
Report to the police.
Due to through slight tired and moderate fatigue lower limit accelerator open degree, engine system meeting
Oil-break, combustion torque reduces, and engine speed can return to idle conditions, and speed too can
It is reduced to the minimum speed that vehicle stabilization travels, at about 10km/h, urgent under severe fatigue
Brake, is not result in the harm personal safeties such as vehicle rollover.
The above, the only detailed description of the invention of the present invention, it is noted that any be familiar with basis
The technical staff in field in the technical scope that disclosed herein, the change that can readily occur in or
Replace, all should contain within protection scope of the present invention.
Claims (10)
1. a fatigue drive of car security protection system, it is characterised in that: include fatigue driving
Early warning system (1), system switching input block (2), accelerator opening amount signal unit (3), send out
Motivation tach signal unit (4), GES unit (5), system controller (6), start
Machine controller (7), FP Fuel Pump Relay unit (10) and electronic stabilizing control system (11);
Described driver fatigue monitor system (1) output driver fatigue strength S, system switching are defeated
Enter unit (2) output enable signal, accelerator opening amount signal unit (3) output accelerator open degree P,
Engine rotational speed signal unit (4) output engine rotating speed n, GES unit (5) are defeated
Going out speed v to system controller (6), described system controller (6) is according to the various letters of input
Number carry out level of fatigue judgement, and according to level of fatigue output command adapted thereto to engine controller
(7), FP Fuel Pump Relay unit (10) and electronic stabilizing control system (11).
2. fatigue drive of car security protection system as claimed in claim 1, it is characterised in that:
Also include video and music entertainment system main frame (8) and car body controller (9), described audio-visual amusement system
System (8) main frame is used for receiving voice message signal in the car that system controller (6) sends, institute
State car body controller (9) to be used for receiving vehicle body double sudden strain of a muscle alarm signal that system controller (6) sends
Number.
3. fatigue drive of car security protection system as claimed in claim 2, it is characterised in that:
Described system controller (6) and driver fatigue monitor system (1), system switching input block
(2), accelerator opening amount signal unit (3), engine rotational speed signal unit (4), GES
Unit (5), video and music entertainment system main frame (8), car body controller (9) and electronic stability control
System processed passes through CAN communication between (11).
4. a fatigue drive of car safety protecting method, it is characterised in that receive driver tired
Labor strength signal, judges level of fatigue according to driver fatigue intensity, and defeated according to level of fatigue
Go out corresponding actions:
When being judged as without fatigue driving, driver ask accelerator open degree P as output throttle
Aperture;
When being judged as slight fatigue driving, if driver asks accelerator open degree P less than throttle
Aperture limit value Plim, then driver asks accelerator open degree P as output accelerator open degree;If driving
The person of sailing asks accelerator open degree P to exceed accelerator open degree limit value Plim, then by accelerator open degree limit value PlimMake
For output accelerator open degree;
When being judged as moderate fatigue driving, output accelerator open degree is 0;
When being judged as severe fatigue driving, output accelerator open degree is 0, and carries out oil-break and tight
Bring to a halt.
5. fatigue drive of car safety protecting method as claimed in claim 4, it is characterised in that
Described level of fatigue is according to concrete fatigue strength SNJudge:
As 0≤SN≤ a, for without fatigue driving;
As a < SN≤ b, for slight fatigue driving;
As b < SN≤ c, for moderate fatigue driving;
As c < SN≤ 1, for severe fatigue driving;
Described concrete fatigue strength SNFor driver fatigue strength S normalized income value, institute
State numerical value a, b, c and be respectively slight fatigue driving, moderate fatigue driving, severe fatigue driving
Threshold value.
6. fatigue drive of car safety protecting method as claimed in claim 5, it is characterised in that
During slight fatigue driving, described accelerator open degree limit value PlimCalculating process as follows:
Use and demarcate the method tabled look-up, according to concrete fatigue strength SNWorth go out corresponding initial
Accelerator open degree limit value P (SN)lim;
Calculate speed considerations factor f of engine speed n1(n), describedInstitute
State PlimN () is the safe accelerator aperture limit value under different engine, obtained by Experimental Calibration
Take;
Calculate the speed compensating factor f of speed v2(v), describedDescribed Plim(v) be
Safe accelerator aperture limit value under different speeds, is obtained by Experimental Calibration;
Described accelerator open degree limit value Plim=P (SN)lim×f1(n)×f2(v)。
7. fatigue drive of car safety protecting method as claimed in claim 6, it is characterised in that
Work as x1< SN< x2Time, described initial accelerator open degree limit value P (SN)limCalculated by linear interpolation
Arrive, i.e.Described f (x1) and f (x2) it is concrete tired strong
Degree SNTake x respectively1And x2Time corresponding initial accelerator open degree limit value.
8. fatigue drive of car safety protecting method as claimed in claim 4, it is characterised in that:
During described slight fatigue driving, in sending car, voice message signal prompt driver is in the most tired
Labor driving condition.
9. fatigue drive of car safety protecting method as claimed in claim 4, it is characterised in that
During described moderate fatigue driving, send voice message signal prompt driver in car and be in danger and sail
State.
10. fatigue drive of car safety protecting method as claimed in claim 4, its feature exists
In, during described severe fatigue driving, in sending car, voice message signal prompt driver is in danger
Danger is sailed state, is sent the double alarm signal of dodging of vehicle body, controls vehicle oil-break simultaneously, and carries out urgent
Brake.
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CN108263359A (en) * | 2016-12-29 | 2018-07-10 | 博世汽车部件(苏州)有限公司 | The system and method for preventing vehicle from accidentally accelerating |
CN108045227A (en) * | 2018-01-15 | 2018-05-18 | 陈世辉 | A kind of intelligent early-warning method for driving safety |
CN110154887A (en) * | 2018-02-10 | 2019-08-23 | 深圳市北航电子有限公司 | A kind of fatigue driving method for early warning |
CN110254229A (en) * | 2019-07-23 | 2019-09-20 | 杨庆奎 | A kind of safe driving method and device of drunk-driving prevention and fatigue driving |
CN111942150A (en) * | 2020-07-31 | 2020-11-17 | 东风汽车集团有限公司 | Intelligent control system and control method for safe driving of vehicle |
CN112124320A (en) * | 2020-09-10 | 2020-12-25 | 恒大新能源汽车投资控股集团有限公司 | Vehicle control method and system and vehicle |
CN112758094A (en) * | 2021-01-04 | 2021-05-07 | 重庆长安汽车股份有限公司 | Safe parking device and method for driving assistance system |
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