CN114670845A - Driving fatigue monitoring method, controller, system and vehicle - Google Patents

Abstract

The application provides a driving fatigue monitoring method, a controller, a system and a vehicle, wherein the driving fatigue monitoring method comprises the following steps: acquiring transverse motion parameters and longitudinal motion parameters of a vehicle; carrying out driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result; and when the first recognition result and/or the second recognition result is fatigue driving, outputting a fatigue driving early warning signal. Under the condition that physiological monitoring equipment is not added to the vehicle, transverse motion parameters and longitudinal motion parameters of the vehicle are obtained only through the original structure of the vehicle, fatigue driving identification is conducted according to the transverse motion parameters and the longitudinal motion parameters, fatigue driving early warning signals are output when the driver is determined to be fatigue driving, warning is conducted on the driver, on the basis that driving fatigue detection is conducted on the driver, judgment is conducted through comprehensive longitudinal and transverse motion, accuracy of judgment results is improved, and meanwhile vehicle cost increase is avoided.

Description

Driving fatigue monitoring method, controller, system and vehicle

Technical Field

The application relates to the technical field of vehicle safety, in particular to a driving fatigue monitoring method, a controller, a system and a vehicle.

Background

According to statistics, 20% of traffic accidents are caused by fatigue driving, and 30% of road traffic accidents are caused by distraction, so that the problem of monitoring the fatigue of drivers becomes a heating point for the automobile industry.

At present, various mainstream car enterprises and scientific and technological companies have already laid out a driver fatigue monitoring system, but the driver fatigue monitoring system is based on a respiratory rate, a heart rate, blood pressure, blood oxygen, pulse, a human body biological clock for twenty-four hours and other direct analysis methods, and the methods are adopted for analysis, so that hardware support such as an infrared camera and the like needs to be added in a car, and the cost of the whole car is increased. Therefore, how to reduce the cost based on the fatigue monitoring of the driver becomes an effort for those skilled in the art.

Disclosure of Invention

The technical purpose to be achieved by the embodiment of the application is to provide a driving fatigue monitoring method, a controller, a system and a vehicle, which are used for solving the problems that the current fatigue monitoring system needs to be additionally provided with hardware support, and the cost of the whole vehicle is increased.

In order to solve the above technical problem, an embodiment of the present application provides a driving fatigue monitoring method, including:

Acquiring transverse motion parameters and longitudinal motion parameters of a vehicle;

carrying out driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result;

and when the first recognition result and/or the second recognition result is fatigue driving, outputting a fatigue driving early warning signal.

Preferably, in the driving fatigue monitoring method, the driving fatigue recognition is performed according to the lateral motion parameter, and the step of obtaining the first recognition result includes:

acquiring first vehicle speed information and first time information corresponding to the transverse motion parameters;

and obtaining a first identification result according to the first vehicle speed information, the first time information and the transverse motion parameter.

Specifically, the driving fatigue monitoring method, when the lateral motion parameter is lateral acceleration, obtaining a first recognition result according to the first vehicle speed information, the first time information and the lateral motion parameter, includes:

and if the first duration time in the first time information is longer than a first preset duration time, determining that the first recognition result is fatigue driving, wherein the first duration time is the duration time that the vehicle speed in the first vehicle speed information is longer than a first preset vehicle speed and the lateral acceleration value is longer than a preset lateral acceleration threshold value.

Specifically, the driving fatigue monitoring method, when the lateral motion parameter is a steering wheel rotation angle change rate, obtaining a first recognition result according to the first vehicle speed information, the first time information and the lateral motion parameter, includes:

periodically acquiring a value of a steering wheel rotation angle change rate in a first preset time period as first sample data when the vehicle speed in the first vehicle speed information is greater than a first preset vehicle speed;

and when the average value of the steering wheel rotation angle change rates in the first sample data of the first preset number is smaller than a preset average threshold value, determining that the first recognition result is driving fatigue.

Preferably, in the driving fatigue monitoring method, the driving fatigue recognition is performed according to the longitudinal motion parameter, and the step of obtaining the second recognition result includes:

acquiring second vehicle speed information and second time information corresponding to the longitudinal movement parameters;

and obtaining a second identification result according to the second vehicle speed information, the second time information and the longitudinal motion parameter.

Specifically, the driving fatigue monitoring method as described above, when the longitudinal movement parameter is the accelerator pedal opening change rate, the step of obtaining the second recognition result according to the second vehicle speed information, the second time information, and the longitudinal movement parameter includes:

Periodically acquiring a value of the accelerator pedal opening change rate within a second preset time length as second sample data when the vehicle speed is higher than a second preset vehicle speed in the second vehicle speed information;

and when the dispersion variance of the accelerator pedal opening degree change rate in the second sample data of the continuous second preset number is larger than a preset variance threshold value, determining that the second identification result is fatigue driving.

Preferably, the driving fatigue monitoring method as described above, further includes:

acquiring third speed information and third time information in the running process of the vehicle;

obtaining a third identification result according to the third speed information and the third time information;

and outputting a fatigue driving early warning signal when the first recognition result, the second recognition result and/or the third recognition result is fatigue driving.

Specifically, the step of obtaining the third recognition result according to the third speed information and the third time information includes:

when a second duration in the third time information is greater than a second preset duration, determining that the third recognition result is fatigue driving, wherein the second duration is the duration when the vehicle is in high-speed driving, and when the vehicle speed in the third vehicle speed information is greater than or equal to the third preset vehicle speed, determining that the vehicle is in high-speed driving;

Or when a third duration in the third time information is less than a third preset duration, determining that the third recognition result is fatigue driving, wherein the third duration is a duration from exiting the high-speed driving to entering the high-speed driving again after the second duration is greater than the second preset duration.

Preferably, the driving fatigue monitoring method as described above, further includes:

and when a fatigue reminding closing signal is received, stopping outputting the fatigue driving early warning signal, wherein the fatigue reminding closing signal is sent when a soft switch on a central control display screen or a physical switch on a steering wheel is triggered.

There is also provided in another preferred embodiment of the present application a controller including:

the first acquisition module is used for acquiring transverse motion parameters and longitudinal motion parameters of the vehicle;

the first processing module is used for identifying the driving fatigue according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result;

and the second processing module is used for outputting a fatigue driving early warning signal when the first identification result and/or the second identification result is fatigue driving.

Preferably, as the controller described above, the first processing module includes:

the device comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring first vehicle speed information and first time information corresponding to transverse motion parameters;

and the first processing unit is used for obtaining a first identification result according to the first vehicle speed information, the first time information and the transverse movement parameter.

Specifically, the controller as described above, when the lateral motion parameter is lateral acceleration, the first processing unit is configured to:

and if the first duration time in the first time information is longer than a first preset duration time, determining that the first recognition result is fatigue driving, wherein the first duration time is the duration time that the vehicle speed in the first vehicle speed information is longer than a first preset vehicle speed and the lateral acceleration value is longer than a preset lateral acceleration threshold value.

Specifically, the controller as described above, when the lateral movement parameter is a steering wheel angle change rate, the first processing unit is configured to:

periodically acquiring a value of a steering wheel rotation angle change rate in a first preset time period as first sample data when the vehicle speed is greater than a first preset vehicle speed in the first vehicle speed information;

and when the average value of the steering wheel rotation angle change rates in the first sample data of the first preset number is smaller than a preset average threshold value, determining that the first recognition result is driving fatigue.

Preferably, as the controller described above, the first processing module includes:

a second acquisition unit configured to acquire second vehicle speed information and second time information corresponding to the longitudinal movement parameter;

and the second processing unit is used for obtaining a second identification result according to the second vehicle speed information, the second time information and the longitudinal motion parameter.

Specifically, the controller as described above, when the longitudinal movement parameter is an accelerator pedal opening change rate, the second processing unit is configured to:

periodically acquiring a value of the accelerator pedal opening change rate within a second preset time period as second sample data when the vehicle speed in the second vehicle speed information is greater than a second preset vehicle speed;

and when the dispersion variance of the accelerator pedal opening degree change rate in the second sample data of the continuous second preset number is larger than a preset variance threshold value, determining that the second identification result is fatigue driving.

Preferably, the processor as described above, further comprising:

the second acquisition module is used for acquiring third speed information and third time information in the running process of the vehicle;

the third processing module is used for obtaining a third identification result according to the third speed information and the third time information;

and the fourth processing module is used for outputting a fatigue driving early warning signal when the first recognition result, the second recognition result and/or the third recognition result is/are fatigue driving.

Specifically, the controller as described above, the third processing module, is configured to:

when a second duration in the third time information is greater than a second preset duration, determining that the third recognition result is fatigue driving, wherein the second duration is the duration when the vehicle is in high-speed driving, and when the vehicle speed in the third vehicle speed information is greater than or equal to the third preset vehicle speed, determining that the vehicle is in high-speed driving;

or when a third duration in the third time information is less than a third preset duration, determining that the third recognition result is fatigue driving, wherein the third duration is a duration from exiting the high-speed driving to entering the high-speed driving again after the second duration is greater than the second preset duration.

Preferably, the controller as described above, further comprising:

and the fifth processing module is used for stopping outputting the fatigue driving early warning signal when receiving the fatigue reminding closing signal, wherein the fatigue reminding closing signal is sent when a soft switch on a central control display screen or a physical switch on a steering wheel is triggered.

There is also provided in yet another preferred embodiment of the present application a driving fatigue monitoring system, including:

The device comprises a first acquisition device for acquiring transverse motion parameters of the vehicle, a second acquisition device for acquiring longitudinal motion parameters of the vehicle, an early warning prompt device and the controller;

the controller is respectively connected with the first acquisition device, the second acquisition device and the early warning prompt device and is used for acquiring transverse motion parameters and longitudinal motion parameters of the vehicle; carrying out driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result; when the first recognition result and/or the second recognition result is fatigue driving, outputting a fatigue driving early warning signal to an early warning prompting device;

the early warning prompting device is used for carrying out early warning prompting according to the fatigue driving early warning signal.

Preferably, the driving fatigue monitoring system as described above, further comprising: and the control switch is connected with the controller and used for sending a fatigue reminding closing signal to the controller according to the user operation, and the fatigue reminding closing signal is used for enabling the controller to stop sending the fatigue driving early warning signal.

There is also provided in another preferred embodiment of the present application a vehicle including: a driving fatigue monitoring system as described above.

There is also provided in yet another preferred embodiment of the present application a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method for monitoring driving fatigue, such as a dealer.

Compared with the prior art, the driving fatigue monitoring method, the controller, the system and the vehicle provided by the embodiment of the application have the following beneficial effects at least:

under the condition that physiological monitoring equipment is not added to the vehicle, transverse motion parameters and longitudinal motion parameters of the vehicle are obtained only through the original structure of the vehicle, fatigue driving identification is conducted according to the transverse motion parameters and the longitudinal motion parameters, fatigue driving early warning signals are output when the driver is determined to be fatigue driving, warning is conducted on the driver, on the basis that driving fatigue detection is conducted on the driver, judgment is conducted through comprehensive longitudinal and transverse motion, accuracy of judgment results is improved, and meanwhile vehicle cost increase is avoided.

Drawings

FIG. 1 is a schematic flow chart of a driving fatigue monitoring method according to the present application;

FIG. 2 is a second schematic flowchart of the driving fatigue monitoring method of the present application;

FIG. 3 is a third schematic flow chart of the driving fatigue monitoring method of the present application;

FIG. 4 is a fourth flowchart illustrating a driving fatigue monitoring method according to the present application;

FIG. 5 is a fifth flowchart illustrating a driving fatigue monitoring method according to the present application;

FIG. 6 is a sixth schematic flowchart of the driving fatigue monitoring method of the present application;

FIG. 7 is a schematic structural diagram of a controller of the present application;

fig. 8 is a schematic structural diagram of the driving fatigue monitoring system of the present application.

Detailed Description

To make the technical problems, technical solutions and advantages to be solved by the present application clearer, the following detailed description is made with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present application, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Referring to fig. 1, a preferred embodiment of the present application provides a driving fatigue monitoring method, including:

step S101, acquiring transverse motion parameters and longitudinal motion parameters of a vehicle;

step S102, performing driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result;

And S103, outputting a fatigue driving early warning signal when the first identification result and/or the second identification result is fatigue driving.

In one embodiment of the present application, a controller in a vehicle obtains lateral motion parameters and longitudinal motion parameters of the vehicle, and respectively carrying out driving fatigue recognition according to the transverse motion parameters to obtain a first recognition result about the transverse motion of the vehicle, the driving fatigue recognition is carried out according to the longitudinal motion parameters to obtain a second recognition result about the longitudinal motion of the vehicle, and then the driving fatigue judgment result of the vehicle after synthesizing the longitudinal and transverse motion information can be obtained according to the first identification result and the second identification result, in the present embodiment, it is preferable that, when at least one of the first recognition result and the second recognition result is fatigue driving, the driver is determined to be in a fatigue driving state, and at the moment, a fatigue driving early warning signal is output to the early warning prompting device to give an early warning, so that the driver is timely and accurately prompted to pay attention to rest, and traffic accidents caused by driving fatigue or inattention are reduced.

To sum up, in this embodiment, without adding a physiological monitoring device to the vehicle, the lateral motion parameter and the longitudinal motion parameter of the vehicle are obtained only through the original structure of the vehicle, and fatigue driving recognition is performed accordingly, and a fatigue driving warning signal is output when it is determined that the driver is fatigue driving, so as to warn the driver.

Specifically, the above-mentioned lateral motion parameters include, but are not limited to, lateral acceleration, steering wheel angle, rate of change of steering wheel angle, and the like, and the longitudinal motion parameters include, but are not limited to, accelerator pedal opening, accelerator pedal rate of change, brake pedal opening, brake pedal rate of change, and the like.

Optionally, after the fatigue driving warning signal is sent to the warning prompting device, the warning prompting device can be prompted through at least one of various prompting forms such as sound, light and vibration.

Referring to fig. 2, preferably, the driving fatigue monitoring method as described above, the step S102 of performing driving fatigue recognition according to the lateral motion parameter to obtain the first recognition result includes:

step S201, acquiring first vehicle speed information and first time information corresponding to transverse motion parameters;

step S202, a first identification result is obtained according to the first vehicle speed information, the first time information and the transverse movement parameter.

In a preferred embodiment of the application, when fatigue driving recognition is performed according to the transverse motion parameters, first vehicle speed information and first time information corresponding to the transverse motion parameters are also acquired, and the transverse motion parameters, the vehicle speed and the time are integrated for judgment, so that misjudgment caused by accidental events and when the vehicle is in a stop state or a safe vehicle speed is reduced, and the accuracy of driving fatigue recognition is further ensured.

Specifically, the driving fatigue monitoring method, when the lateral motion parameter is lateral acceleration, obtaining a first recognition result according to the first vehicle speed information, the first time information and the lateral motion parameter, includes:

and if the first duration time in the first time information is longer than a first preset duration time, determining that the first recognition result is fatigue driving, wherein the first duration time is the duration time that the vehicle speed in the first vehicle speed information is longer than a first preset vehicle speed and the lateral acceleration value is longer than a preset lateral acceleration threshold value.

In a specific embodiment of the application, when the lateral motion parameter is lateral acceleration, if the vehicle is running at a speed greater than a first preset vehicle speed and a first duration of running at a lateral acceleration greater than a preset lateral acceleration threshold is greater than the first preset duration, it is indicated that when unexpected lateral motion occurs due to lateral wind, uneven road surface and other factors, the driver does not correct the lateral motion in time, and then it can be determined that the driver is in a fatigue driving state or a distraction state due to long-time driving, at this time, it is determined that the first recognition result is fatigue driving, and then a fatigue driving warning signal is output to warn the driver, which is beneficial to timely and accurately reminding the driver to improve attention, and timely go to a restable area to rest or replace the driver to drive, and further improves driving safety of the vehicle.

Referring to fig. 3, in particular, the driving fatigue monitoring method as described above, when the lateral motion parameter is a steering wheel rotation angle change rate, the step S202 of obtaining a first recognition result according to the first vehicle speed information, the first time information and the lateral motion parameter includes:

step S301, periodically acquiring a value of a steering wheel angle change rate in a first preset time period as first sample data when the vehicle speed in the first vehicle speed information is greater than a first preset vehicle speed;

step S302, when the average value of the steering wheel rotation angle change rates in the first sample data of the first preset number is smaller than a preset average threshold value, determining that the first recognition result is driving fatigue.

In a specific embodiment of the present application, when the lateral motion parameter is a steering wheel angle change rate, since the steering wheel angle changes more in a short time, if the steering wheel angle change rate detected at a certain time point is adopted for determination, there is an accidental error, which reduces the accuracy of the final determination result, and meanwhile, the determination result when the vehicle is in a stopped state or a safe vehicle speed does not have practical significance, in this embodiment, when the vehicle speed is periodically obtained to be greater than a first preset vehicle speed, a value of the steering wheel angle change rate in a first preset duration is first sample data, and an average value of the steering wheel angle change rate in the first sample data is obtained to be compared with a preset average threshold value, and when an average value in a first number of consecutive first sample data is smaller than a preset average value, it indicates that in a first preset number of times, the driver does not have the intention of actively rotating the steering wheel, and then the driver can be judged to be in a fatigue driving state or a distraction state, the first recognition result is determined to be fatigue driving at the moment, and then a fatigue driving early warning signal is output to warn the driver, so that the driver can be timely and accurately reminded to improve the attention.

Optionally, the first preset number is a positive integer greater than 1, wherein the first preset number is preferably 2.

Referring to fig. 4, preferably, in the driving fatigue monitoring method, the driving fatigue recognition is performed according to the longitudinal motion parameter, and the step S201 of obtaining the second recognition result includes:

step S401, acquiring second vehicle speed information and second time information corresponding to the longitudinal motion parameters;

and step S402, obtaining a second identification result according to the second vehicle speed information, the second time information and the longitudinal motion parameter.

In another preferred embodiment of the application, when the driving fatigue identification is performed according to the longitudinal parameter and a second identification result is obtained, second vehicle speed information and second time information corresponding to the longitudinal motion parameter are further obtained, and the longitudinal motion parameter, the vehicle speed and the time are integrated for judgment, so that misjudgment caused by an accidental event and when the vehicle is in a stop state or a safe vehicle speed is reduced, and the accuracy of the driving fatigue identification is further ensured.

Referring to fig. 5, in particular, in the driving fatigue monitoring method as described above, when the longitudinal movement parameter is an accelerator pedal opening change rate, the step S402 of obtaining the second recognition result based on the second vehicle speed information, the second time information and the longitudinal movement parameter includes:

Step S501, when the vehicle speed is higher than a second preset vehicle speed in second vehicle speed information, periodically acquiring a value of the accelerator pedal opening degree change rate in a second preset time period as second sample data;

step S502, when the dispersion variance of the accelerator pedal opening degree change rate in the second preset number of continuous second sample data is larger than a preset variance threshold, determining that the second identification result is fatigue driving.

In a specific embodiment of the present application, when the longitudinal motion parameter is the accelerator pedal opening degree change rate, since the accelerator pedal opening degree changes more in a short time, if the accelerator pedal opening degree change rate detected at a certain time point is adopted for determination, there is an accidental error, which reduces the accuracy of the final determination result, and meanwhile, the determination result when the vehicle is in a stopped state or at a safe vehicle speed does not have practical significance, in this embodiment, when the vehicle speed is periodically acquired to be greater than a second preset vehicle speed, the value of the accelerator pedal opening degree change rate in a second preset duration is second sample data, and the dispersion variance of the steering wheel rotation angle change rate in the second sample data is acquired to be compared with a preset variance threshold, and when the dispersion variance in a second continuous number of second sample data is greater than the variance value, it indicates that in a second preset number of second preset durations, the driver has the unconscious conditions such as excessive acceleration or excessive deceleration, and then can judge that the driver is in a fatigue driving state or a distraction state, and the second recognition result is determined to be fatigue driving at the moment, so that the fatigue driving early warning signal is output to warn the driver, and the driver is reminded of improving the attention timely and accurately.

Optionally, the second preset number is a positive integer greater than 1, wherein the second preset number is preferably 2.

Alternatively, when the vehicle has a plurality of running modes, the preset average threshold value of the steering wheel angle change rate, the preset variance threshold value of the accelerator pedal opening change rate, and the preset lateral acceleration threshold value may be determined according to the specific running mode.

Referring to fig. 6, preferably, the driving fatigue monitoring method as described above, further includes:

step S601, acquiring third speed information and third time information in the running process of the vehicle;

step S602, obtaining a third identification result according to the third speed information and the third time information;

and step S603, outputting a fatigue driving early warning signal when the first recognition result, the second recognition result and/or the third recognition result is fatigue driving.

In another preferred embodiment of the application, the controller further obtains third speed information and third time information in a driving process of the vehicle, performs fatigue driving feature recognition according to the third speed information and the third time information to obtain a third recognition result, further performs judgment according to the first recognition result, the second recognition result and the third recognition result during judgment, and outputs a fatigue driving early warning signal to perform early warning when at least one of the first recognition result, the second recognition result and the third recognition result is fatigue driving.

Specifically, the step of obtaining the third recognition result according to the third speed information and the third time information includes:

when a second duration in the third time information is greater than a second preset duration, determining that the third recognition result is fatigue driving, wherein the second duration is the duration when the vehicle is in high-speed driving, and when the vehicle speed in the third vehicle speed information is greater than or equal to the third preset vehicle speed, determining that the vehicle is in high-speed driving;

or when a third duration in the third time information is less than a third preset duration, determining that the third recognition result is fatigue driving, wherein the third duration is a duration from exiting the high-speed driving to entering the high-speed driving again after the second duration is greater than the second preset duration.

In a specific embodiment of the application, when the third recognition result is obtained according to the third speed information and the third time information, preferably, if it is determined according to the third time information and the third speed information that the duration of the vehicle in high-speed driving is longer than a second preset duration, it is determined that the continuous high-speed driving time of the driver is too long, and it is further determined that the driver is in fatigue driving; and if the vehicle exits from the high-speed driving after the continuous high speed and the time interval for reentering the high-speed driving is less than a third preset duration, determining that the driver does not have sufficient rest after fatigue driving and then performs the high-speed driving again, and determining that the driver is fatigue driving at the moment.

Preferably, in the embodiment, the second preset duration is four hours, the third preset duration is twenty minutes, and the third preset vehicle speed is the lowest vehicle speed of the vehicle on the expressway, and may be a preset vehicle speed, for example, 40 km/h.

Preferably, the driving fatigue monitoring method as described above, further includes:

and when a fatigue reminding closing signal is received, stopping outputting the fatigue driving early warning signal, wherein the fatigue reminding closing signal is sent when a soft switch on a central control display screen or a physical switch on a steering wheel is triggered.

In a preferred embodiment of the present application, the driving fatigue monitoring method further includes determining that the driver is in a waking state and does not need to perform an early warning prompt when the controller receives a fatigue warning off signal sent by the driver through a soft switch arranged on the central control display screen or a physical switch on a steering wheel, so that outputting of the fatigue driving early warning signal is stopped, and trouble caused by continuous warning to normal driving of the driver is avoided.

Referring to fig. 7, there is also provided in another preferred embodiment of the present application a controller including:

a first obtainingmodule 701, configured to obtain a lateral motion parameter and a longitudinal motion parameter of a vehicle;

Thefirst processing module 702 is configured to perform driving fatigue identification according to the lateral motion parameter to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result;

thesecond processing module 703 is configured to output a fatigue driving warning signal when the first identification result and/or the second identification result is fatigue driving.

Preferably, as the controller described above, the first processing module includes:

the device comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring first vehicle speed information and first time information corresponding to transverse motion parameters;

and the first processing unit is used for obtaining a first identification result according to the first vehicle speed information, the first time information and the transverse motion parameter.

Specifically, the controller as described above, when the lateral motion parameter is lateral acceleration, the first processing unit is configured to:

and if the first duration time in the first time information is longer than a first preset duration time, determining that the first recognition result is fatigue driving, wherein the first duration time is the duration time that the vehicle speed in the first vehicle speed information is longer than a first preset vehicle speed and the lateral acceleration value is longer than a preset lateral acceleration threshold value.

Specifically, the controller as described above, when the lateral movement parameter is a steering wheel angle change rate, the first processing unit is configured to:

Periodically acquiring a value of a steering wheel rotation angle change rate in a first preset time period as first sample data when the vehicle speed is greater than a first preset vehicle speed in the first vehicle speed information;

and when the average value of the steering wheel rotation angle change rates in the first sample data of the first preset number is smaller than a preset average threshold value, determining that the first recognition result is driving fatigue.

Preferably, as the controller described above, the first processing module includes:

a second acquisition unit configured to acquire second vehicle speed information and second time information corresponding to the longitudinal movement parameter;

and the second processing unit is used for obtaining a second identification result according to the second vehicle speed information, the second time information and the longitudinal motion parameter.

Specifically, the controller as described above, when the longitudinal movement parameter is an accelerator pedal opening change rate, the second processing unit is configured to:

periodically acquiring a value of the accelerator pedal opening change rate within a second preset time length as second sample data when the vehicle speed is higher than a second preset vehicle speed in the second vehicle speed information;

and when the dispersion variance of the accelerator pedal opening degree change rate in the second sample data of the continuous second preset number is larger than a preset variance threshold value, determining that the second identification result is fatigue driving.

Preferably, the processor as described above, further comprising:

the second acquisition module is used for acquiring third speed information and third time information in the running process of the vehicle;

the third processing module is used for obtaining a third identification result according to the third speed information and the third time information;

and the fourth processing module is used for outputting a fatigue driving early warning signal when the first recognition result, the second recognition result and/or the third recognition result is/are fatigue driving.

Specifically, the controller as described above, the third processing module is configured to:

when a second duration in the third time information is greater than a second preset duration, determining that the third recognition result is fatigue driving, wherein the second duration is the duration when the vehicle is in high-speed driving, and when the vehicle speed in the third vehicle speed information is greater than or equal to the third preset vehicle speed, determining that the vehicle is in high-speed driving;

or when a third duration in the third time information is less than a third preset duration, determining that the third recognition result is fatigue driving, wherein the third duration is a duration from exiting the high-speed driving to entering the high-speed driving again after the second duration is greater than the second preset duration.

Preferably, the controller as described above, further comprising:

and the fifth processing module is used for stopping outputting the fatigue driving early warning signal when receiving the fatigue reminding closing signal, wherein the fatigue reminding closing signal is sent when a soft switch on a central control display screen or a physical switch on a steering wheel is triggered.

The embodiment of the controller of the present application is a controller corresponding to the embodiment of the driving fatigue monitoring method, and all implementation means in the embodiment of the method are applicable to the embodiment of the controller, so that the same technical effects can be achieved.

Referring to fig. 8, in still another preferred embodiment of the present application, there is provided a driving fatigue monitoring system, including: the system comprises afirst acquisition device 801 for acquiring transverse motion parameters of the vehicle, asecond acquisition device 802 for acquiring longitudinal motion parameters of the vehicle, an earlywarning prompting device 803 and thecontroller 804;

thecontroller 804 is respectively connected with thefirst acquisition device 801, thesecond acquisition device 802 and the earlywarning prompting device 803, and is used for acquiring transverse motion parameters and longitudinal motion parameters of the vehicle; carrying out driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result; when the first recognition result and/or the second recognition result is fatigue driving, outputting a fatigue driving early warning signal to the earlywarning prompting device 803;

Theearly warning device 803 is used for performing early warning according to the fatigue driving early warning signal.

In a preferred embodiment of the present application, a driving fatigue monitoring system is further provided, wherein acontroller 804 is respectively connected to thefirst collecting device 801, thesecond collecting device 802, and thewarning prompting device 803, and acquires lateral motion parameters of a vehicle through thefirst collecting device 801, and collects longitudinal motion parameters of the vehicle through thesecond collecting device 802, so as to perform a driving fatigue identification step in the driving fatigue monitoring method according to the lateral motion parameters, and when it is determined that the driver is fatigue driving, outputs a fatigue driving warning signal to thewarning prompting device 803, so that thewarning prompting device 803 performs a warning prompt according to the fatigue driving warning signal, and ensures driving fatigue detection for the driver without adding a physiological monitoring device to the vehicle, and performs a judgment through synthesizing the lateral motion, thereby improving the accuracy of a judgment result, while avoiding increased vehicle costs.

Preferably, the driving fatigue monitoring system as described above, further comprising: and thecontrol switch 805 connected with thecontroller 804 is used for sending a fatigue reminding closing signal to thecontroller 804 according to the user operation, and the fatigue reminding closing signal is used for enabling thecontroller 804 to stop sending the fatigue driving early warning signal.

In another preferred embodiment of the present application, the driving fatigue monitoring system further includes: and thecontrol switch 805 comprises a soft switch on a central control display screen and/or a physical switch on a steering wheel, so that a driver sends a fatigue reminding closing signal to the controller through the soft switch or the hard switch, so that the controller stops sending a fatigue driving early warning signal, and further, the trouble caused by continuous reminding on normal driving of the driver is avoided.

There is also provided in another preferred embodiment of the present application a vehicle including: a driving fatigue monitoring system as described above.

There is also provided in yet another preferred embodiment of the present application a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method for monitoring driving fatigue, such as a dealer.

The first collecting device is preferably an electronic stability electric unit and an electric power steering unit; the second acquisition device is preferably an electronic stability electrical unit; the controller is preferably a whole vehicle controller; the early warning prompting device is preferably a combination meter.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and refinements can be made without departing from the principle described in the present application, and these modifications and refinements should be regarded as the protection scope of the present application.

Claims (14)

1. A driving fatigue monitoring method, comprising:

acquiring transverse motion parameters and longitudinal motion parameters of a vehicle;

performing driving fatigue identification according to the transverse motion parameters to obtain a first identification result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result;

and when the first identification result and/or the second identification result is fatigue driving, outputting a fatigue driving early warning signal.

2. The driving fatigue monitoring method according to claim 1, wherein the step of performing driving fatigue recognition according to the lateral motion parameter to obtain a first recognition result comprises:

acquiring first vehicle speed information and first time information corresponding to the transverse motion parameters;

and obtaining the first identification result according to the first vehicle speed information, the first time information and the transverse movement parameter.

3. The driving fatigue monitoring method according to claim 2, wherein the step of obtaining the first recognition result based on the first vehicle speed information, the first time information, and the lateral motion parameter when the lateral motion parameter is a lateral acceleration includes:

and if the first duration time in the first time information is longer than a first preset duration time, determining that the first recognition result is fatigue driving, wherein the first duration time is the duration time that the vehicle speed in the first vehicle speed information is longer than a first preset vehicle speed and the lateral acceleration value is longer than a preset lateral acceleration threshold value.

4. The driving fatigue monitoring method according to claim 2, wherein the step of obtaining the first recognition result based on the first vehicle speed information, the first time information, and the lateral motion parameter when the lateral motion parameter is a steering wheel angle change rate includes:

Periodically acquiring the value of the steering wheel rotation angle change rate in a first preset time period as first sample data when the vehicle speed in the first vehicle speed information is greater than a first preset vehicle speed;

and when the average value of the steering wheel rotation angle change rates in the first sample data of a first preset number is smaller than a preset average threshold value, determining that the first recognition result is driving fatigue.

5. The driving fatigue monitoring method according to claim 1, wherein the step of performing driving fatigue recognition according to the longitudinal motion parameter to obtain a second recognition result comprises:

acquiring second vehicle speed information and second time information corresponding to the longitudinal motion parameters;

and obtaining the second identification result according to the second vehicle speed information, the second time information and the longitudinal motion parameter.

6. The driving fatigue monitoring method according to claim 5, wherein when the longitudinal movement parameter is an accelerator pedal opening change rate, the step of obtaining the second recognition result based on the second vehicle speed information, the second time information, and the longitudinal movement parameter includes:

periodically acquiring a value of the accelerator pedal opening change rate within a second preset time period as second sample data when the vehicle speed in the second vehicle speed information is greater than a second preset vehicle speed;

And when the dispersion variance of the accelerator pedal opening change rate in a second preset number of second sample data is larger than a preset variance threshold value, determining that the second identification result is fatigue driving.

7. The driving fatigue monitoring method according to claim 1, further comprising:

acquiring third speed information and third time information in the running process of the vehicle;

obtaining a third identification result according to the third speed information and the third time information;

and when the first recognition result, the second recognition result and/or the third recognition result are/is fatigue driving, outputting the fatigue driving early warning signal.

8. The driving fatigue monitoring method according to claim 7, wherein the step of obtaining a third recognition result based on the third speed information and the third time information includes:

determining that the third recognition result is fatigue driving when a second duration in the third time information is greater than a second preset duration, wherein the second duration is a duration when the vehicle is in high-speed driving, and determining that the vehicle is in high-speed driving when a vehicle speed in the third vehicle speed information is greater than or equal to a third preset vehicle speed;

Or when a third duration in the third time information is less than a third preset duration, determining that the third recognition result is fatigue driving, where the third duration is a duration when the vehicle backs out of the high-speed driving to reenter the high-speed driving when the second duration is greater than the second preset duration.

9. The driving fatigue monitoring method according to claim 1, further comprising:

and when a fatigue reminding closing signal is received, stopping outputting the fatigue driving early warning signal, wherein the fatigue reminding closing signal is sent when a soft switch on a central control display screen or a physical switch on a steering wheel is triggered.

10. A controller, comprising:

the acquisition module is used for acquiring transverse motion parameters and longitudinal motion parameters of the vehicle;

the first processing module is used for identifying driving fatigue according to the transverse motion parameters to obtain a first identification result; performing driving fatigue recognition according to the longitudinal motion parameters to obtain a second recognition result;

and the second processing module is used for outputting a fatigue driving early warning signal when the first identification result and/or the second identification result is fatigue driving.

11. A driving fatigue monitoring system, comprising:

the vehicle warning system comprises a first acquisition device for acquiring transverse motion parameters of a vehicle, a second acquisition device for acquiring longitudinal motion parameters of the vehicle, an early warning prompt device and the controller according to claim 10;

the controller is respectively connected with the first acquisition device, the second acquisition device and the early warning prompting device and is used for acquiring transverse motion parameters and longitudinal motion parameters of the vehicle; performing driving fatigue recognition according to the transverse motion parameters to obtain a first recognition result; performing driving fatigue identification according to the longitudinal motion parameters to obtain a second identification result; when the first identification result and/or the second identification result is fatigue driving, outputting a fatigue driving early warning signal to the early warning prompting device;

the early warning prompting device is used for carrying out early warning prompting according to the fatigue driving early warning signal.

12. The driving fatigue monitoring system of claim 11, further comprising: and the control switch is connected with the controller and used for sending a fatigue reminding closing signal to the controller according to the operation of a user, and the fatigue reminding closing signal is used for enabling the controller to stop sending the fatigue driving early warning signal.

13. A vehicle, comprising: a driving fatigue monitoring system according to claim 11 or 12.

14. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the driving fatigue monitoring method according to any one of claims 1 to 9.

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