CN117842088A - Method for realizing steering wheel vibration - Google Patents
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- CN117842088A CN117842088A CN202311871749.9A CN202311871749A CN117842088A CN 117842088 A CN117842088 A CN 117842088A CN 202311871749 A CN202311871749 A CN 202311871749A CN 117842088 A CN117842088 A CN 117842088A
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Abstract
The invention relates to the technical field of automobile driving assistance, and discloses a method for realizing steering wheel vibration, which comprises the following steps: step one, the DMS monitors the driving state of a driver in real time and transmits data to the IHU; step two, the IHU numbers according to the data, calculates the fatigue index Plzs, analyzes and judges the safe driving state or the fatigue driving state, correspondingly outputs a reminding signal and transmits the reminding signal to the TBOX; step three, connecting TBOX with RBCM through network; fourthly, electrically connecting the RBCM with a vibration motor; and fifthly, steering wheel vibration warns the driver to concentrate on safe driving. The reminding signal is transmitted to the RBCM through the network connection, and the vibration motor and the sprayer are started, so that the beneficial effects of effectively warning the driver to drive safely and reducing the occurrence rate of traffic accidents are achieved. The automobile energy consumption can be effectively reduced, the driving safety is effectively improved, the fatigue driving of a driver is avoided, and the beneficial effects of more convenience and intelligent driving experience are achieved.
Description
Technical Field
The invention relates to the technical field of automobile driving assistance, in particular to a method for realizing steering wheel vibration.
Background
The automobile driving system is an important component of modern automobiles and consists of a plurality of subsystems, including an engine control system, a transmission control system, a brake control system, a suspension control system, an intelligent auxiliary system and the like. The subsystems are interconnected through various sensors and actuators, so that the accurate control and adjustment of the automobile by the driver are realized. The automobile driving system is used as a highly integrated comprehensive system, so that the performance and the safety of an automobile can be improved, and more convenient and comfortable driving experience can be provided for a driver. Among them, in order to improve driving safety and driver alertness, some automobile manufacturers have begun to develop various driving assistance systems. The driving assistance system can enhance safety and comfort of a driver, optimize fuel economy, save fuel and reduce emissions.
The fatigue early warning system for the driver is also called an anti-fatigue early warning system, a fatigue recognition system, an attention warning auxiliary system or a driver safety warning system and the like, and is a device capable of monitoring and reminding the fatigue state of the driver. The system is initially applied to the fields of advanced auxiliary driving or higher automatic driving degree of airplanes and the like, and an initial driver fatigue monitoring system is a monitoring system based on physiological response characteristic signals during human fatigue. Nowadays, such an assist system has been widely used in automobiles, which judges whether a driver has a fatigue driving situation by facial features, eye signals, head motility, etc. of the driver. Meanwhile, the system can monitor the distance between the automobile and the lane, and once the driver is found to be tired, distracted or abnormal in driving, the system can send out a sound signal to warn. A text prompt message is displayed on the dashboard of the vehicle and a symbol of a coffee cup appears, meaning that the driver is told to take a rest. Fatigue driving is a very dangerous behavior that not only endangers the life safety of the driver itself, but also poses a threat to other road users. When drivers drive fatigue, their brain and body reaction rates can slow, which can lead to their inability to make timely decisions in emergency situations. The driver is distracted, cannot concentrate on observing road conditions and other vehicles, cannot evaluate traffic conditions and risks correctly, and thus causes erroneous driving decisions, and the driver loses control over the vehicles, thereby increasing the risk of accidents. Drivers who are engaged in fatigue driving for a long period of time may be faced with a number of health problems such as insomnia, anxiety, depression, etc. However, it should be noted that these security assistance systems only serve an assistance role and are not entirely dependent thereon. The real driving safety is still mastered in the hands of the driver. The standard driving is responsible for oneself, family and others.
At present, the existing automobile driving auxiliary technology can only remind a driver of safe driving in a mode of characters, symbols and voice, but can not effectively warn the driver to concentrate on attention in a state that the driver gets rid of fatigue driving consciousness, and serious traffic accidents are easy to cause.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a method for realizing steering wheel vibration, which has the advantages of effectively warning drivers of safe driving and reducing the occurrence rate of traffic accidents, and solves the problem that the drivers cannot effectively receive warning information in the modes of characters, symbols and voices in the state of fatigue driving consciousness becoming lost.
(II) technical scheme
In order to achieve the purpose of effectively warning drivers of safe driving and reducing the occurrence rate of traffic accidents, the invention provides the following technical scheme: a method for realizing steering wheel vibration comprises the following steps:
step one, the DMS monitors the driving state of a driver in real time and transmits data to the IHU;
step two, the IHU numbers according to the data, calculates the fatigue index Plzs, analyzes and judges the safe driving state or the fatigue driving state, correspondingly outputs a reminding signal and transmits the reminding signal to the TBOX;
step three, connecting TBOX with RBCM through network;
fourthly, electrically connecting the RBCM with a vibration motor;
and fifthly, the steering wheel vibrates to prompt the driver to pay attention to safe driving.
Preferably, the steering wheel is fixedly provided with a camera, a holding sensor and a sprayer, the DMS monitors the driving state of a driver in real time through the camera and the holding sensor, the camera collects a photo data set of the driver in real time and transmits the photo data set to the IHU through a network, and the holding sensor collects a grip strength data set of the steering wheel in real time and transmits the grip strength data set to the IHU through the network.
Through above-mentioned technical scheme, DMS (Driver Monitoring System) is driver monitored control system, it monitors the driving state of driver through sensors such as the camera, it monitors and analyzes in real time facial expression, eye action, head gesture etc. of driver through sensors such as the camera to assist the system to judge whether driver tired drive or distraction drive, gather driver photograph dataset through the camera, can count driver and close the eye duration, the grip strength dataset around the steering wheel is gathered in real time to the grip strength dataset, can count the steering wheel, make things convenient for follow-up system to judge driver's real-time driving state.
Preferably, the IHU numbers the driver photo data set according to the characteristics of the grip strength data set of the steering wheel and the driver photo data set is JZ 1 、JZ 2 、JZ 3 、...JZ n The grip strength data set number of the steering wheel is WL 1 、WL 2 、WL 3 、...WL n 。
Through the technical scheme, the IHU (Intelligent Head-Up Display) is an Intelligent Head-Up Display system, and the IHU is used for projecting vehicle information into the sight line range of a driver, so that the driver can acquire the vehicle information without transferring the sight line, and the information comprises vehicle speed, navigation route, steering indication and the like, so that the driver can be helped to concentrate on driving operation more, driving safety is improved, the IHU is used for numbering the IHU according to the photo data set of the driver and the characteristic of the grip data set of the steering wheel, and the time length of the eye-closing operation of the driver and the change of the grip difference before and after the steering wheel are conveniently counted.
Preferably, the IHU calculates the fatigue index Plzs according to the driver photo data set number and the steering wheel grip strength data set number, and the calculation formula is as follows:
in the formula, plzs represents fatigue index, WL n -WL n-1 Indicating the difference of the front and rear grip strength of the steering wheel, H JZ Indicating the eye-closing period in the driver's photograph.
Through the technical scheme, when the fatigue driving consciousness of the driver is lost, the grip strength of the steering wheel is gradually reduced, and WL n -WL n-1 The difference between the front and rear grip strength should be negative, and the grip strength of the steering wheel is kept unchanged or increased when the driver is driving safely, WL n -WL n-1 The difference between the front and back grip strength should be positive, H JZ Indicating the eye closing time in the picture of the driver, H in the normal driving process JZ And the number equal to or greater than 0 is a positive number, and the real-time driving state of the driver can be clearly judged according to formula calculation.
Preferably, when the fatigue index Plzs is less than or equal to 0, the IHU analysis determines that the driver is in a safe driving state, and when the fatigue index Plzs is greater than 0, the IHU analysis determines that the driver is in a fatigue driving state.
Through the technical scheme, the IHU analysis is used for judging that the driver is in a safe driving state or a fatigue driving state, so that the driving safety is effectively improved.
Preferably, the IHU does not output a warning signal to the TBOX when the driver is in the safe driving state according to the fatigue index Plzs, and outputs a warning signal to the TBOX when the driver is in the fatigue driving state according to the fatigue index Plzs.
According to the technical scheme, the TBOX (Telematics Box) is the vehicle-mounted communication terminal, the connection of the vehicle and an external network can be realized, the remote transmission and control of vehicle information are realized, the TBOX can receive instructions from a mobile phone or other equipment, such as remote starting, remote locking and the like, meanwhile, the TBOX can also send the state information of the vehicle to a vehicle owner or related service providers, such as the vehicle position, the fuel consumption and the like, and a reminding signal is output to the TBOX through the IHU, so that the system response is rapid, and the traffic accident rate is effectively reduced.
Preferably, when the TBOX receives the fatigue index Plzs and the reminding signal, the reminding signal is transmitted to the RBCM through a network connection.
Through above-mentioned technical scheme, RBCM (Remote Body Control Module) is long-range automobile body control module, and it can control some functions of vehicle, for example window lift, door switch, air conditioner temperature regulation etc. RBCM can operate through cell-phone APP or on-vehicle screen's button, makes things convenient for the driver to control the vehicle under the condition that does not leave the seat, transmits the warning signal to RBCM through TBOX, has realized that follow-up drive vibrations motor and atomizer work.
Preferably, when the RBCM receives the reminding signal, the vibration motor is controlled to be in an on state, the vibration motor is a linear motor, and the output end of the vibration motor is fixedly connected to the steering wheel and used for warning the driver of the concentrated safe driving.
Through above-mentioned technical scheme, through RBCM electric connection vibration motor, flexible control steering wheel curve shape vibrations, effective warning driver focus on safe driving.
Preferably, the vibration motor is electrically connected with the sprayer, and the starting time of the vibration motor and the starting time of the sprayer are the same as the time of outputting the reminding signal by the IHU.
Through the technical scheme, when the fatigue driving consciousness of the driver is lost, the hands are easy to separate from the steering wheel, the sprayer sprays water mist to remind the driver to keep awake, the starting time of the vibration motor, the starting time of the sprayer and the output reminding signal time of the IHU are identical, and the steering wheel can continuously vibrate and continuously spray to effectively warn the driver to safely drive, so that traffic accidents are reduced.
Preferably, a reminding switch is arranged in the IHU, and the reminding switch is connected with the DMS, IHU, TBOX and RBCM network.
Through above-mentioned technical scheme, through being provided with the warning switch in the IHU, the short distance driving in-process closes the warning switch and is energy-conserving driving state, effectively reduces the car energy consumption, and long-distance driving in-process opens the warning switch and is the auxiliary driving state, effectively improves driving safety, avoids driver fatigue driving.
Compared with the prior art, the invention provides a method for realizing steering wheel vibration, which has the following beneficial effects:
1. according to the invention, the DMS transmits the photo data set of the driver acquired by the camera and the grip strength data set of the steering wheel acquired by the grip strength sensor to the IHU, the IHU numbers the photo data set of the driver and the grip strength data set of the steering wheel according to the characteristics of the photo data set of the steering wheel and calculates the fatigue index Plzs, the fatigue index Plzs is analyzed and judged to be in a safe driving state or a fatigue driving state, a reminding signal is correspondingly output and transmitted to the TBOX, and when the TBOX receives the fatigue index Plzs and the reminding signal, the reminding signal is transmitted to the RBCM through network connection, and the vibration motor and the sprayer are started, so that the beneficial effects of effectively warning the driver of safe driving and reducing the occurrence rate of traffic accidents are achieved.
2. According to the invention, the reminding switch is arranged in the IHU and is connected with the DMS, IHU, TBOX and RBCM network, the reminding switch is closed to be in an energy-saving driving state in the short-distance driving process, the energy consumption of the automobile is effectively reduced, the reminding switch is opened to be in an auxiliary driving state in the long-distance driving process, the driving safety is effectively improved, the fatigue driving of a driver is avoided, and the beneficial effects of more convenience and intelligent driving experience are achieved.
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FIG. 1 is a schematic diagram of a structural system of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a method for implementing steering wheel vibration includes the following steps:
step one, the DMS monitors the driving state of a driver in real time and transmits data to the IHU;
DMS (Driver Monitoring System) is a driver monitoring system, which monitors the driving state of a driver through sensors such as a camera, monitors and analyzes the facial expression, eye movements, head gestures and the like of the driver in real time through the sensors such as the camera to assist the system in judging whether the driver is tired or distracted, the steering wheel is fixedly provided with the camera, the grip sensor and the sprayer, the DMS monitors the driving state of the driver in real time through the camera and the grip sensor, the camera acquires a photo data set of the driver in real time and transmits the photo data set to the IHU through a network, and the grip sensor acquires a grip strength data set of the steering wheel in real time and transmits the grip strength data set to the IHU through the network;
step two, the IHU numbers according to the data, calculates the fatigue index Plzs, analyzes and judges the safe driving state or the fatigue driving state, correspondingly outputs a reminding signal and transmits the reminding signal to the TBOX;
IHU (Intelligent Head-Up Display) is an Intelligent Head-Up Display system, which projects vehicle information into the sight line of a driver, so that the driver can acquire the vehicle information without transferring the sight line, the information comprises vehicle speed, navigation route, steering indication and the like, the driver can be helped to pay more attention to driving operation, driving safety is improved, the IHU numbers the vehicle information according to the characteristics of a photo data set of the driver and a grip data set of a steering wheel, and the photo data set of the driver is JZ 1 、JZ 2 、JZ 3 、...JZ n Steering wheel grip dataset number WL 1 、WL 2 、WL 3 、...WL n The IHU calculates the fatigue index Plzs according to the picture data set number of the driver and the grip strength data set number of the steering wheel, and the calculation formula is as follows:
in the formula, plzs represents fatigue index, WL n -WL n-1 Indicating the difference of the front and rear grip strength of the steering wheel, and gradually reducing the grip strength of the steering wheel when the fatigue driving consciousness of the driver is lostThe difference of the front and rear grip strength should be negative, the grip strength of the steering wheel should be kept unchanged or increased when the driver is driving safely, the difference of the front and rear grip strength should be positive, H JZ Indicating the eye closing time in the picture of the driver, H in the normal driving process JZ And the fatigue index Plzs is not more than 0, and is calculated according to a formula, when the fatigue index Plzs is not more than 0, the IHU analysis judges that the driver is in a safe driving state, and the fatigue index Plzs is obtained>When 0, IHU analysis judges that the driver is in a fatigue driving state;
the IHU does not output a reminding signal to the TBOX when the driver is in the safe driving state according to the fatigue index plzs, and outputs the reminding signal to the TBOX when the driver is in the fatigue driving state according to the fatigue index plzs;
step three, connecting TBOX with RBCM through network;
TBOX (Telematics Box) is a vehicle-mounted communication terminal, which can realize connection of a vehicle and an external network, realize remote transmission and control of vehicle information, and the TBOX can receive instructions from a mobile phone or other equipment, such as remote start, remote locking and the like, and can send state information of the vehicle to a vehicle owner or related service providers, such as vehicle position, oil consumption and the like, and when the TBOX receives fatigue index plzs and reminding signals, the TBOX transmits the reminding signals to RBCM through network connection;
fourthly, electrically connecting the RBCM with a vibration motor;
RBCM (Remote Body Control Module) is a remote car body control module, which can control some functions of a car, such as car window lifting, car door opening and closing, air conditioner temperature adjustment and the like, and the RBCM can be operated through a mobile phone APP or buttons on a car screen, so that a driver can conveniently control the car under the condition of not leaving a seat, when the RBCM receives a reminding signal, the RBCM controls a vibration motor to be in an on state, the vibration motor is a linear motor, and the output end of the vibration motor is fixedly connected with a steering wheel, so that the vibration motor drives the steering wheel to vibrate in a curve shape and is used for warning the driver of concentrated safe driving;
step five, the steering wheel vibrates to prompt the driver to concentrate on safe driving;
the vibration motor is electrically connected with the sprayer, when the fatigue driving consciousness of the driver is lost, the hands are easy to separate from the steering wheel, the sprayer sprays water mist to remind the driver to keep awake, the starting time of the vibration motor, the starting time of the sprayer and the time of outputting a reminding signal by the IHU are the same, and the steering wheel continuously vibrates and continuously sprays the water mist to effectively warn the driver to drive safely and reduce traffic accidents;
the IHU is provided with a reminding switch, the reminding switch is connected with the DMS, IHU, TBOX and RBCM (RBCM) network, the reminding switch is closed to be in an energy-saving driving state in the short-distance driving process, the energy consumption of the automobile is effectively reduced, the reminding switch is opened to be in an auxiliary driving state in the long-distance driving process, the driving safety is effectively improved, and the fatigue driving of a driver is avoided.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for realizing steering wheel vibration is characterized in that: the method comprises the following steps:
step one, the DMS monitors the driving state of a driver in real time and transmits data to the IHU;
step two, the IHU numbers according to the data, calculates the fatigue index Plzs, analyzes and judges the safe driving state or the fatigue driving state, correspondingly outputs a reminding signal and transmits the reminding signal to the TBOX;
step three, connecting TBOX with RBCM through network;
fourthly, electrically connecting the RBCM with a vibration motor;
and fifthly, steering wheel vibration warns the driver to concentrate on safe driving.
2. The method for realizing the vibration of the steering wheel according to claim 1, wherein the method comprises the following steps: the steering wheel is fixedly provided with a camera, a holding force sensor and a sprayer, the DMS monitors the driving state of a driver in real time through the camera and the holding force sensor, the camera collects a photo data set of the driver in real time and transmits the photo data set to the IHU through a network, and the holding force sensor collects a holding force data set of the steering wheel in real time and transmits the holding force data set to the IHU through the network.
3. The method for realizing the vibration of the steering wheel according to claim 2, wherein the method comprises the following steps: the IHU numbers the driver photo data set according to the characteristics of the driver photo data set and the steering wheel grip strength data set, wherein the number of the driver photo data set is JZ 1 、JZ 2 、JZ 3 、...JZ n The grip strength data set number of the steering wheel is WL 1 、WL 2 、WL 3 、...WL n 。
4. A method for implementing steering wheel vibration according to claim 3, wherein: the IHU calculates the fatigue index Plzs according to the picture data set number of the driver and the grip strength data set number of the steering wheel, and the calculation formula is as follows:
in the formula, plzs represents fatigue index, WL n -WL n-1 Indicating the difference of the front and rear grip strength of the steering wheel, H JZ Indicating the eye-closing period in the driver's photograph.
5. The method for realizing the vibration of the steering wheel according to claim 4, wherein the method comprises the following steps: and when the fatigue index Plzs is less than or equal to 0, the IHU analysis judges that the driver is in a safe driving state, and when the fatigue index Plzs is more than 0, the IHU analysis judges that the driver is in a fatigue driving state.
6. The method for realizing the vibration of the steering wheel according to claim 5, wherein the method comprises the following steps: the IHU does not output a reminding signal to the TBOX when the driver is in the safe driving state according to the fatigue index Plzs, and outputs the reminding signal to the TBOX when the driver is in the fatigue driving state according to the fatigue index Plzs.
7. The method for realizing the vibration of the steering wheel according to claim 6, wherein the method comprises the following steps: when the TBOX receives the fatigue index Plzs and the reminding signal, the reminding signal is transmitted to the RBCM through network connection.
8. The method for realizing the vibration of the steering wheel according to claim 7, wherein the method comprises the following steps: when the RBCM receives the reminding signal, the vibrating motor is controlled to be in an on state, the vibrating motor is a linear motor, and the output end of the vibrating motor is fixedly connected to the steering wheel and is used for warning a driver of focusing on safe driving.
9. The method for realizing the vibration of the steering wheel according to claim 8, wherein the method comprises the following steps: the vibration motor is electrically connected with the sprayer, and the starting time of the vibration motor, the starting time of the sprayer and the output reminding signal time of the IHU are identical.
10. The method for realizing the vibration of the steering wheel according to claim 1, wherein the method comprises the following steps: and a reminding switch is arranged in the IHU and is connected with DMS, IHU, TBOX and RBCM through a network.
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| CN202311871749.9A CN117842088A (en) | 2023-12-28 | 2023-12-28 | Method for realizing steering wheel vibration |
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