CN111572557A - Driving reminding system and method - Google Patents
Driving reminding system and method Download PDFInfo
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- CN111572557A CN111572557A CN202010362914.8A CN202010362914A CN111572557A CN 111572557 A CN111572557 A CN 111572557A CN 202010362914 A CN202010362914 A CN 202010362914A CN 111572557 A CN111572557 A CN 111572557A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W50/16—Tactile feedback to the driver, e.g. vibration or force feedback to the driver on the steering wheel or the accelerator pedal
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/143—Alarm means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/146—Display means
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- Automation & Control Theory (AREA)
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Abstract
A driving reminding method comprises a VCU (vehicle control unit), a vehicle running state detection system, a driver operation sensing system, an environment sensing system and a navigation voice broadcasting system; the vehicle control unit VCU is respectively connected with the vehicle running state detection system, the driver operation perception system, the environment perception system and the navigation voice broadcasting system and is in data communication, driving data information of standard driving experiences after inspection is stored in the vehicle control unit VCU, the vehicle control unit VCU seeks a correction coefficient to correct according to the received information, seeks a safety factor to check and output, and provides driver reference.
Description
Technical Field
The invention relates to the field of driving reminding, in particular to a driving reminding system and a driving reminding method based on the system.
Background
At present, with the improvement of the automobile holding capacity per capita, more and more automobiles are arranged on the road, the running road conditions of the automobiles are more and more complex, and the driving technical requirements on drivers are higher and higher. Research shows that the fuel consumption of a well-trained driver can be reduced to 25% compared with that of a primary driver, meanwhile, the probability of potential safety hazards is greatly reduced, and the service life and the comfort of a vehicle are correspondingly improved.
However, the effect of theoretical training in the prior art varies from person to person, and even some drivers do not necessarily comply with the requirements of relevant theories and training, for example, patent application 201810685583.4, monitors fatigue driving and sleeping information of the drivers through smart bracelets, and warns through vibration during sleeping to improve safety; the patent application 201910880359.5 monitors the state of the driver through a driving state judgment module and reminds the driver by using the familiarity voice; patent application 201910785787.X develops a reminding method for an automatically driven automobile, and reminds a driver to receive driving operation according to the concentration degree, hands-off information, vehicle state, target state and the like of the driver; the patent application 201911000805.5 acquires road information and sends the road information to a base station, and the base station sends the road information to a vehicle-mounted data terminal after data analysis, so that driving behaviors such as sudden acceleration or sudden braking and the like caused by unfamiliar road conditions are avoided, and the fuel economy and safety are improved; patent application 201910912472.7 analyzes whether the violation behavior is included or not by collecting vehicle state parameters and driver state parameters, and warns and reminds according to the violation behavior, improves the driving behavior of the driver, and cultivates good behavior habits of the driver.
The prior art does not consider the latest vehicle control strategy developed by a vehicle control system (VCU) and an intelligent driving system to improve the driving behavior of a driver.
Disclosure of Invention
The present invention is provided to solve the problems posed by the background art, and the present invention is further described below.
A driving reminding system comprises a vehicle control unit VCU, a vehicle running state detection system, a driver operation sensing system, an environment sensing system and a navigation voice broadcasting system; wherein the content of the first and second substances,
the vehicle control unit is respectively connected with the vehicle running state detection system, the driver operation sensing system, the environment sensing system and the navigation voice broadcasting system;
the vehicle running state detection system is used for detecting speed, acceleration, steering and vibration parameters of a vehicle;
the driver operation sensing system is used for sensing the operation processes of a steering wheel, a brake, an accelerator, a clutch and the like of a driver and sensing the fatigue state of the driver;
the environment sensing system is used for sensing the road surface friction coefficient, the visual sight distance and the obstacle information in the environment;
the navigation voice broadcasting system is used for broadcasting the vehicle driving reminding information while broadcasting the voice navigation information.
A driving reminding method at least comprises drunk driving or drunk driving reminding and fatigue driving reminding, wherein,
drunk driving or drunk driving reminding, wherein a vehicle control unit VCU starts related detection questions on a vehicle-mounted display screen, and the detection questions are calculated by a mathematical formula, touch the screen to respond to touch positions in sequence according to prompts and slide on the screen randomly or in multiple according to dynamic tracks, and the calculation is finished within a specified time so as to confirm that a driver is in a cleaning state;
the safety belt is tied and reminded, whether the safety belt is in a state of being tied correctly or not is detected all the time in the driving process, and the reminding for unifying or distinguishing the driver seat and other seats comprises the following steps: for uniform reminding, a driver operates a sensing system to carry out safety belt restraint reminding on people in the vehicle by sensing pressure sensors arranged under all seats on the premise of sensing the pressure sensors; for the distinguished reminding, the driver replaces the pressure sensor induction signal of the unified reminding with the vehicle starting signal; the driver operates the sensing system to sense the strain of the stretching sensor attached to the safety belt and makes a judgment to ensure that the driver is in a driving state under the effective use of the safety belt;
the driver operation sensing system detects the driving state of the driver through wearing equipment of the driver, and the vehicle control unit VCU sends out a fatigue driving prompt after receiving detection data to remind the driver to rest or replace the driver; at a high speed, the VCU of the vehicle controller integrates a navigation system, and pre-reminding is carried out by combining fatigue information of a driver, and reminding is carried out before a service station arrives before fatigue is achieved.
Further, the detection can be divided into three detection opportunities according to actual setting, each detection opportunity is a two-way detection test question, and the two-way detection test questions are continuously used for the detection of drunk driving or drunk driving reminding.
Further, gear reminding is included, the VCU carries out a proper speed range on each driving gear, the VCU senses the gear and the advancing speed of the vehicle through the vehicle running state detection system, data are matched, an alarm signal is sent out when the advancing speed exceeds the gear recommended speed range and exceeds 5s, and the voice prompts a driver to change a higher or lower driving gear.
Further, the vehicle control unit VCU obtains a bending radius through path navigation of the navigation voice broadcasting system, obtains a current bending speed through the vehicle running state detection system, obtains a friction coefficient between the vehicle and the ground through the environment sensing system, obtains a maximum bending radius under the current bending speed and the friction coefficient between the vehicle and the ground through the built-in corresponding table or the built-in calculation formula of the vehicle control unit VCU, compares the radius with an actual bending radius, and judges whether the bending is safe.
Further, the VCU provides a correction coefficient of the driving speed according to the visual range, and provides correction for the driving passing radius under the correction coefficient; the VCU of the vehicle control unit sends out a prompt of starting the warm air to prompt a driver to start the warm air to eliminate the warm air of the liquefied water drops of the driving glass or prompt that the driver can select a closing signal.
Further, the VCU obtains a safety factor according to the fatigue state of the driver sensed by the driver operation sensing system and the reaction condition of the driver measured by the drunk driving or drunk driving reminding module, and corrects the driving speed obtained by the correction factor through the safety factor to obtain the optimal recommended driving speed.
Has the advantages that: compared with the prior art, the vehicle driving state detection system, the driver operation sensing system, the environment sensing system and the navigation voice broadcasting system are integrated, and voice prompt or warning is carried out on the driving of the driver under the comprehensive control of the VCU of the vehicle controller. The invention particularly reminds drunk driving or drunk driving, fatigue driving, safety belt constraint reminding, gear reminding and turning speed change, obtains optimal driving information by deeply fusing data acquired by each system and reminds a driver, thereby ensuring the driving safety on the one hand; on the other hand, the optimal driving state is provided to reduce the oil consumption, and the measured oil consumption can be reduced by 25 percent, especially for a novice driver; in yet another aspect, wear of the vehicle is reduced so that the vehicle is in an optimal operating condition.
Drawings
FIG. 1: the driving reminding system is structurally schematic;
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.
A driving reminding system comprises a vehicle control unit VCU10, a vehicle running state detection system 20, a driver operation sensing system 30, an environment sensing system 40 and a navigation voice broadcasting system 50; wherein the content of the first and second substances,
the vehicle control unit comprises vehicle control strategies on various vehicles such as a pure electric vehicle, a hybrid electric vehicle and an intelligent driving vehicle;
the vehicle running state detection system is used for detecting parameters such as speed, acceleration, steering and vibration of the vehicle;
the driver operation sensing system is used for sensing the operation processes of a steering wheel, a brake, an accelerator, a clutch and the like of a driver;
the environment sensing system is used for sensing information such as a road surface, a vehicle, an obstacle and the like in the environment;
the navigation voice broadcasting system is used for broadcasting the vehicle driving reminding information while broadcasting the voice navigation information.
The vehicle control unit VCU is respectively connected with the vehicle running state detection system, the driver operation perception system, the environment perception system and the navigation voice broadcasting system and is in data communication, driving data information of standard driving experiences after inspection is stored in the vehicle control unit VCU, the vehicle control unit VCU seeks a correction coefficient to correct according to the received information, seeks a safety factor to check and output, and provides driver reference.
The invention provides a driving reminding method based on a driving reminding system, which at least comprises drunk driving or drunk driving reminding, fatigue driving reminding, safety belt constraint reminding, gear reminding and turning speed change reminding; and the reminding functions are mutually parallel and mutually influence to form a reminding system of the system.
When the system is started, firstly, system self-check is carried out to confirm that all functions of the system are in a normal operation state, if a self-check result has serious warning, the VCU of the vehicle controller sends out a warning signal and forbids the system to be started, and for a general abnormal signal, a confirmation signal is sent out to a vehicle-mounted display screen to confirm by a driver so as to forbid the authority.
And after the system is normally self-checked, the VCU of the vehicle control unit starts each driving reminding function module to enter a working state.
Drunk driving or drunk driving reminding firstly acts, a vehicle control unit VCU starts related detection questions on a vehicle-mounted display screen, and the detection questions can comprise one or more of conventional detection questions such as mathematical formula calculation, touch screen response touch position according to prompt sequence, sliding on a screen according to dynamic tracks and the like, and the detection questions are completed within specified time so as to confirm that a driver is in a cleaning state. The detection can be divided into three detection opportunities according to actual setting, each detection opportunity is a twice detection test question, and the twice detection questions are continuously opposite to one another and can be used for detecting drunk driving or drunk driving reminding.
The safety belt is tied and reminded, namely whether the safety belt is in a state of being tied correctly or not is detected all the time in the driving process, wherein the driver seat and other seats are reminded uniformly or differently: for uniform reminding, namely a driver operates a sensing system to sense pressure sensors arranged under all seats, and the restraint reminding of safety belts is carried out on people in the vehicle on the premise of sensing the pressure sensors; for the distinguished reminding, the actual situation shows that people must drive the vehicle on the driver seat, so the pressure sensor under the driver seat can be eliminated and the vehicle starting signal can be used for replacing the pressure sensor.
In the prior art, all vehicles can provide warning prompts aiming at whether a safety belt is buckled or not, the invention is not elaborated, and it is worth noting that in practice, a driver always buckles the safety belt and does not protect the safety belt, under the condition, the invention detects the contraction force of the safety belt, namely the driver operates a sensing system to sense the strain of a stretching sensor attached to the safety belt and makes a judgment to ensure that the driver is in a driving state under the effective use of the safety belt.
The safety belt restraint reminding is displayed on a vehicle-mounted display screen under the control of the VCU of the vehicle controller, preferably, the corresponding seat in the vehicle is displayed in a flashing state, and prompt signals are sent, such as 'please fasten a safety belt by a passenger seat', 'please fasten the safety belt by a driver correctly', and the like.
After drunk driving or drunk driving reminding and safety belt constraint reminding pass, the VCU gives a driver starting permission, and the driver can start driving. In the driving process, the vehicle driving state detection system senses the shape state of a vehicle and the environment sensing system senses the state of an external environment, the VCU of the vehicle controller provides correct driving operation reminding according to real-time collected data, the driver operation sensing system senses the operation condition of the driver, the sensed driver operation is compared with the recommended operation range of the VCU of the vehicle controller, and warning reminding is carried out when the operation range exceeds a range value. The present embodiment will be explained with a gear shift reminder and a turning speed change reminder.
The gear reminding device is suitable for manual transmission vehicles, and can be known by common knowledge in the field, the consumption of the vehicles is aggravated when the vehicles are driven at a high speed in a resisting position and driven at a low speed in a high gear, the oil consumption is improved, and therefore the gear reminding device needs to prompt a driver to select a correct gear. The VCU senses the gear and the traveling speed of the vehicle through the vehicle running state detection system, matches data, sends out a warning signal when the traveling speed exceeds the gear recommended speed range for a certain time period, such as 5s, and prompts a driver to change a higher or lower driving gear by voice.
In the driving process, the highest danger coefficient is the control of bending, particularly for a novice, under the actual condition, the bending speed and the friction coefficient of a vehicle and the ground are core control parameters, the turning speed change reminding strictly sends out a warning signal under the warning of a VCU of the vehicle controller, the VCU of the vehicle controller obtains the bending radius through the path navigation of a navigation voice broadcasting system, obtains the current bending speed through a vehicle running state detection system, obtains the friction coefficient of the vehicle and the ground through an environment sensing system, obtains the maximum bending radius under the previous bending speed and the friction coefficient of the vehicle and the ground through the substitution calculation of a built-in correspondence table or a built-in calculation formula of the VCU of the vehicle controller, compares the radius with the actual bending radius, and further judges whether the bending is safe.
The environment sensing system is characterized in that a visual camera is further arranged in the cab, the visual camera senses the visual range through the cab glass and simulates the visual range of a driver, and on one hand, the VCU of the vehicle control unit provides a correction coefficient of the driving speed according to the visual range and provides correction for the driving passing bend radius under the correction coefficient; on the other hand, the VCU of the vehicle control unit sends out a prompt of starting the warm air to prompt a driver to start the warm air to eliminate the warm air of the liquefied water drops of the driving glass, and if the situation is not the case, the driver can select a closing signal prompt.
The embodiment is also provided with a fatigue driving reminding module, the driver operation sensing system detects the driving state of the driver through wearing equipment of the driver, such as a bracelet, and judges the mental state of the driver, and the vehicle control unit VCU sends out a fatigue driving reminding after receiving the detection data to remind the driver to rest or replace the driver; at a high speed, the VCU of the vehicle controller integrates a navigation system, and pre-reminding is carried out by combining fatigue information of a driver, and reminding is carried out before a service station arrives before fatigue is achieved.
The VCU of the vehicle control unit comprehensively obtains a safety factor according to the fatigue state of the driver sensed by the driver operation sensing system and the reaction condition of the driver measured by the drunk driving or drunk driving reminding module, and corrects the driving speed obtained by the correction factor through the safety factor to obtain the optimal recommended driving speed.
The vehicle driving state detection system, the driver operation sensing system, the environment sensing system and the navigation voice broadcasting system are integrated, and voice prompt or warning is carried out on the driving of the driver under the comprehensive control of the VCU of the vehicle control unit. The invention particularly reminds drunk driving or drunk driving, fatigue driving, safety belt constraint reminding, gear reminding and turning speed change, obtains optimal driving information by deeply fusing data acquired by each system and reminds a driver, thereby ensuring the driving safety on the one hand; on the other hand, the optimal driving state is provided to reduce the oil consumption, and the measured oil consumption can be reduced by 25 percent, especially for a novice driver; in yet another aspect, wear of the vehicle is reduced so that the vehicle is in an optimal operating condition.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A driving reminding system comprises a vehicle control unit VCU, a vehicle running state detection system, a driver operation sensing system, an environment sensing system and a navigation voice broadcasting system; wherein the content of the first and second substances,
the vehicle control unit is respectively connected with the vehicle running state detection system, the driver operation sensing system, the environment sensing system and the navigation voice broadcasting system;
the vehicle running state detection system is used for detecting speed, acceleration, steering and vibration parameters of a vehicle;
the driver operation sensing system is used for sensing the operation processes of a steering wheel, a brake, an accelerator, a clutch and the like of a driver and sensing the fatigue state of the driver;
the environment sensing system is used for sensing the road surface friction coefficient, the visual sight distance and the obstacle information in the environment;
the navigation voice broadcasting system is used for broadcasting the vehicle driving reminding information while broadcasting the voice navigation information.
2. A driving reminding method is characterized in that: at least comprises drunk driving or drunk driving reminding and fatigue driving reminding, wherein,
drunk driving or drunk driving reminding, wherein a vehicle control unit VCU starts related detection questions on a vehicle-mounted display screen, and the detection questions are calculated by a mathematical formula, touch the screen to respond to touch positions in sequence according to prompts and slide on the screen randomly or in multiple according to dynamic tracks, and the calculation is finished within a specified time so as to confirm that a driver is in a cleaning state;
the safety belt is tied and reminded, whether the safety belt is in a state of being tied correctly or not is detected all the time in the driving process, and the reminding for unifying or distinguishing the driver seat and other seats comprises the following steps: for uniform reminding, a driver operates a sensing system to carry out safety belt restraint reminding on people in the vehicle by sensing pressure sensors arranged under all seats on the premise of sensing the pressure sensors; for the distinguished reminding, the driver replaces the pressure sensor induction signal of the unified reminding with the vehicle starting signal; the driver operates the sensing system to sense the strain of the stretching sensor attached to the safety belt and makes a judgment to ensure that the driver is in a driving state under the effective use of the safety belt;
the driver operation sensing system detects the driving state of the driver through wearing equipment of the driver, and the vehicle control unit VCU sends out a fatigue driving prompt after receiving detection data to remind the driver to rest or replace the driver; at a high speed, the VCU of the vehicle controller integrates a navigation system, and pre-reminding is carried out by combining fatigue information of a driver, and reminding is carried out before a service station arrives before fatigue is achieved.
3. The driving reminding method according to claim 2, characterized in that: the detection can be divided into three detection opportunities according to actual setting, each detection opportunity is a twice detection test question, and the twice detection questions are continuously opposite to one another and can be used for detecting drunk driving or drunk driving reminding.
4. The driving reminding method according to claim 2, characterized in that: the vehicle control unit VCU senses the gear and the traveling speed of the vehicle through the vehicle traveling state detection system, matches data, sends out a warning signal when the traveling speed exceeds the gear recommended speed range for more than 5 seconds, and prompts a driver to change a higher or lower driving gear in voice.
5. The driving reminding method according to claim 2, characterized in that: the vehicle control unit VCU obtains a bending radius through path navigation of the navigation voice broadcasting system, obtains a current bending speed through the vehicle running state detection system, obtains a friction coefficient between the vehicle and the ground through the environment sensing system, obtains a maximum bending radius under the friction coefficient between the vehicle and the ground and the bending speed before the vehicle passes through the vehicle through the built-in correspondence table or the built-in calculation formula of the vehicle control unit VCU, compares the radius with the actual bending radius, and judges whether the vehicle passes through the bend safely.
6. The driving reminding method according to claim 1, characterized in that: the VCU provides a correction coefficient of the driving speed according to the visual range, and provides correction for the driving passing radius under the correction coefficient; the VCU of the vehicle control unit sends out a prompt of starting the warm air to prompt a driver to start the warm air to eliminate the warm air of the liquefied water drops of the driving glass or prompt that the driver can select a closing signal.
7. The driving alert method according to claim 6, wherein: the VCU also comprehensively obtains a safety factor according to the fatigue state of the driver sensed by the driver operation sensing system and the reaction condition of the driver measured by the drunk driving or drunk driving reminding module, and corrects the driving speed obtained by the correction factor by the safety factor to obtain the optimal recommended driving speed.
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