CN110053631B - Driving behavior optimization method and device - Google Patents
Driving behavior optimization method and device Download PDFInfo
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- CN110053631B CN110053631B CN201910309907.9A CN201910309907A CN110053631B CN 110053631 B CN110053631 B CN 110053631B CN 201910309907 A CN201910309907 A CN 201910309907A CN 110053631 B CN110053631 B CN 110053631B
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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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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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
- 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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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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
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/801—Lateral distance
Abstract
The embodiment of the invention provides a driving behavior optimization method and a driving behavior optimization device, wherein the distance between a vehicle and an adjacent vehicle is determined according to the current position of the vehicle and the current position of the adjacent vehicle, and the headway of the vehicle is determined by combining the current speed of the vehicle; if the headway of the vehicle is larger than the critical headway, the ratio of the current speed of the vehicle to the preset speed limit value is calculated, so that the driving state of the vehicle is determined according to the ratio, and the driving state of the vehicle is fed back to a driver, so that the driver can optimize the driving behavior. The method and the device can effectively optimize the driving behavior of the driver by monitoring the driving state of the driver in real time, do not need to rely on a large number of auxiliary vehicle-mounted devices or road side devices, have low application cost and easy popularization, can be widely applied to road traffic management work, are beneficial to reducing the potential hidden danger of road traffic accidents, and are further beneficial to improving the operating efficiency and the safety of road traffic.
Description
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to a driving behavior optimization method and device.
Background
With the increasing of the vehicle-passing mileage of the expressway, the traffic safety situation of the expressway is more severe, and in recent years, traffic accidents occurring on the expressway account for a large proportion of all road traffic accidents and show a rising trend. Meanwhile, because the speed of vehicles on the highway is high, the severity of injury is often high when a traffic accident occurs. According to analysis of causes of highway traffic accidents, most of the traffic accidents are caused by the fact that a rear vehicle cannot be safely stopped and a rear vehicle knocks down under the condition that a front vehicle brakes due to too close following distance or too high driving speed.
In view of the above, it is desirable to provide a driving behavior optimization method and device to prompt a driver to optimize a driving behavior, so as to avoid the situation that a following distance is too close or a driving speed is too high, and reduce potential hazards of highway traffic accidents.
Although related research in the prior art can realize optimization of driving behaviors, the realization method of the driving behavior optimization needs to depend on a large amount of auxiliary vehicle-mounted equipment or roadside equipment, is difficult to popularize and popularize in a short period, and cannot be widely applied to road traffic management work.
Disclosure of Invention
The embodiment of the invention provides a driving behavior optimization method and device, aiming at solving the problem that a large amount of auxiliary vehicle-mounted equipment or roadside equipment is needed when the driving behavior optimization is realized in the prior art.
In a first aspect, an embodiment of the present invention provides a driving behavior optimization method, including:
acquiring the current position of the vehicle and the current position of an adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle;
acquiring the current speed of the vehicle, determining the vehicle headway according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the vehicle headway is larger than the critical headway;
and determining the driving state of the vehicle according to the ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes the driving behavior according to the driving state of the vehicle.
In a second aspect, an embodiment of the present invention provides a driving behavior optimization apparatus, including:
the first calculation module is used for acquiring the current position of the vehicle and the current position of the adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle;
the second calculation module is used for acquiring the current speed of the vehicle, determining the headway of the vehicle according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the headway of the vehicle is larger than a critical headway;
and the driving behavior optimization module is used for determining the driving state of the vehicle according to the ratio and feeding the driving state of the vehicle back to the driver so that the driver can optimize the driving behavior according to the driving state of the vehicle.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method provided in the first aspect when executing the program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first aspect.
The driving behavior optimization method and the driving behavior optimization device provided by the embodiment of the invention determine the distance between the vehicle and the adjacent vehicle according to the current position of the vehicle and the current position of the adjacent vehicle, and determine the headway of the vehicle by combining the current speed of the vehicle; if the headway of the vehicle is larger than the critical headway, the ratio of the current speed of the vehicle to the preset speed limit value is calculated, so that the driving state of the vehicle is determined according to the ratio, and the driving state of the vehicle is fed back to a driver, so that the driver can optimize the driving behavior. The method and the device can effectively optimize the driving behavior of the driver by monitoring the driving state of the driver in real time, do not need to rely on a large number of auxiliary vehicle-mounted devices or road side devices, have low application cost and easy popularization, can be widely applied to road traffic management work, are beneficial to reducing the potential hidden danger of road traffic accidents, and are further beneficial to improving the operating efficiency and the safety of road traffic.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a driving behavior optimization method according to an embodiment of the present invention;
fig. 2 is a schematic view of a relationship between a display position of a pointer in a dial and a driving state according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a driving behavior optimization device according to an embodiment of the present invention;
fig. 4 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a driving behavior optimization method provided in an embodiment of the present invention, and as shown in fig. 1, the embodiment of the present invention provides a driving behavior optimization method, including:
s1, acquiring the current position of the vehicle and the current position of the adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle;
specifically, the current position of the host vehicle is first acquired by the navigation system of the host vehicle, and at the same time, the current positions of neighboring vehicles are acquired by the internet of vehicles. It should be noted that, in the embodiment of the present invention, the host vehicle and the neighboring vehicle are in an environment of an internet of vehicles, where the internet of vehicles refers to a dynamic mobile communication system that implements communication between the vehicle and a public network by interacting between vehicles, vehicles and roads, vehicles and people, vehicles and sensing devices, and the like. On the basis, in the embodiment of the invention, after the adjacent vehicle acquires the current position of the adjacent vehicle through the navigation system of the adjacent vehicle, the current position of the adjacent vehicle can be acquired through the internet of vehicles. In addition, in the embodiment of the present invention, the neighboring vehicle refers to a vehicle located in front of the host vehicle and closest to the host vehicle, and the current position of the host vehicle and the current position of the neighboring vehicle refer to the geographical position coordinate information of the host vehicle at the current time and the geographical position coordinate information of the neighboring vehicle at the current time, respectively. In addition, the navigation system comprises a GPS navigation system, a Beidou navigation system and the like, can be set according to actual requirements, and is not specifically limited.
Further, after the current position of the host vehicle and the current positions of the neighboring vehicles are obtained, the distance between the host vehicle and the neighboring vehicles is determined as the target distance according to the current positions of the host vehicle and the neighboring vehicles. That is, the distance between the host vehicle and the neighboring vehicle is calculated as the target distance from the geographical position coordinate information of the host vehicle at the current time and the geographical position coordinate information of the neighboring vehicle at the current time.
S2, acquiring the current speed of the vehicle, determining the headway of the vehicle according to the target distance and the current speed of the vehicle, and if the headway of the vehicle is larger than the critical headway, calculating the ratio of the current speed of the vehicle to a preset speed limit value;
specifically, on the basis of the above technical solution, the current speed of the host vehicle is acquired by the navigation system of the host vehicle, and on this basis, the headway of the host vehicle is determined according to the target distance and the current speed of the host vehicle. The headway refers to the time interval when two continuous vehicle headways pass through a certain section in a vehicle queue running on the same lane.
Further, after the headway of the vehicle is obtained, the headway of the vehicle is compared with the critical headway, and if the headway of the vehicle is larger than the critical headway, it can be determined that the current driving scene of the vehicle is a free driving scene. It should be noted that, in the free-running scene, the driving behavior of the driver is not necessarily restricted by the neighboring vehicle, but only the driving speed of the driver is restricted. Therefore, after the current driving scene of the vehicle is determined to be the free driving scene, the ratio of the current speed of the vehicle to the preset speed limit value is further calculated.
It should be noted that, in the embodiment of the present invention, the critical headway is preset, and the critical headway is set to 8s, and in other embodiments, the critical headway may be set according to an actual requirement, which is not specifically limited herein. In addition, in the embodiment of the present invention, the preset speed limit value refers to a speed limit value of a driving road where the vehicle is located, and needs to be determined according to the actual driving road where the vehicle is located, which is not specifically limited herein.
And S3, determining the driving state of the vehicle according to the ratio, and feeding back the driving state of the vehicle to the driver so that the driver optimizes the driving behavior according to the driving state of the vehicle.
Specifically, on the basis of the above technical solution, the driving state of the vehicle is determined according to the ratio obtained by the calculation, and the driving state of the vehicle is fed back to the driver, so that the driver optimizes the driving behavior according to the driving state of the vehicle. In the embodiment of the present invention, the driving state is divided into an idling state, a good state, and a dangerous state. The idle state indicates that the current driving speed of the driver is low, and the driver is required to accelerate driving; the good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously; the dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving. On this basis, if it is determined that the running state of the vehicle is an idling state, the current running state of the vehicle is fed back to the driver so that the driver performs accelerated driving; if the driving state of the vehicle is determined to be a good state, the current driving state of the vehicle is fed back to the driver to enable the driver to continuously keep the current driving behavior; and if the driving state of the vehicle is determined to be a dangerous state, feeding back the current driving state of the vehicle to the driver as the dangerous state so that the driver can carry out deceleration driving.
It should be noted that, in the embodiment of the present invention, the current driving state of the vehicle may be fed back to the driver in a visual and auditory manner, in other embodiments, the current driving state of the vehicle may be fed back to the driver in other manners, and the setting may be performed according to actual needs, which is not limited specifically here.
The driving behavior optimization method provided by the embodiment of the invention determines the distance between the vehicle and the adjacent vehicle according to the current position of the vehicle and the current position of the adjacent vehicle, and determines the headway of the vehicle by combining the current speed of the vehicle; if the headway of the vehicle is larger than the critical headway, the ratio of the current speed of the vehicle to the preset speed limit value is calculated, so that the driving state of the vehicle is determined according to the ratio, and the driving state of the vehicle is fed back to a driver, so that the driver can optimize the driving behavior. The method can effectively optimize the driving behavior of the driver by monitoring the driving state of the driver in real time, does not need to rely on a large number of auxiliary vehicle-mounted devices or road side devices, has low application cost and easy popularization, can be widely applied to road traffic management work, is beneficial to reducing the potential hidden danger of road traffic accidents, and is further beneficial to improving the operation efficiency and the safety of road traffic.
Based on any one of the above embodiments, there is provided a driving behavior optimization method, further including: if the headway of the vehicle is not larger than the critical headway, calculating the ratio of the current speed of the vehicle to a preset speed limit value as a first ratio, and calculating the ratio of the target distance to a preset safety distance as a second ratio; and determining the driving state of the vehicle according to the first ratio and the second ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes driving behaviors according to the driving state of the vehicle.
Specifically, in the embodiment of the present invention, after the vehicle headway is obtained, the vehicle headway is compared with the critical headway, and if the vehicle headway is not greater than the critical headway, it may be determined that the current driving scene of the vehicle is the following driving scene. In the following driving scene, it is necessary to restrict not only the driving speed of the driver but also the distance between the host vehicle and the adjacent vehicle. Therefore, after the current driving scene of the vehicle is determined to be the following driving scene, the ratio of the current speed of the vehicle to the preset speed limit value is further calculated and used as the first ratio, and the ratio of the target distance to the preset safe distance is calculated and used as the second ratio. Wherein, the target distance refers to the distance between the current host vehicle and the adjacent vehicle; the preset safety interval may be pre-calculated by a safety interval calculation model. In the embodiment of the invention, the safety interval calculation model is as follows:
wherein S is a preset safety interval; s0The minimum distance from the adjacent vehicle when the vehicle stops; v1Is the current speed of the host vehicle; v2Is the current speed of the neighboring vehicle; t is the response time of the driver to brake; psi is the adhesion coefficient of the tire and the road surface; and i is a road resistance coefficient.
It should be noted that, in other embodiments, the preset safe interval may also be calculated by using other safe interval calculation models, and may be set according to actual requirements, which is not specifically limited herein.
Further, the driving state of the vehicle is determined according to the first ratio and the second ratio obtained through calculation, and the driving state of the vehicle is fed back to the driver, so that the driver can optimize the driving behavior according to the driving state of the vehicle. In the embodiment of the present invention, the driving state is divided into an idling state, a good state, and a dangerous state. The idle state indicates that the current driving speed of the driver is low, and the driver is required to accelerate driving; the good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously; the dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving. On this basis, if it is determined that the running state of the vehicle is an idling state, the current running state of the vehicle is fed back to the driver so that the driver performs accelerated driving; if the driving state of the vehicle is determined to be a good state, the current driving state of the vehicle is fed back to the driver to enable the driver to continuously keep the current driving behavior; and if the driving state of the vehicle is determined to be a dangerous state, feeding back the current driving state of the vehicle to the driver as the dangerous state so that the driver can carry out deceleration driving.
According to the driving behavior optimization method provided by the embodiment of the invention, if the headway of the vehicle is not larger than the critical headway, the ratio of the current speed of the vehicle to the preset speed limit value is calculated to be used as a first ratio, and the ratio of the target distance to the preset safety distance is calculated to be used as a second ratio; and determining the driving state of the vehicle according to the first ratio and the second ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes driving behaviors according to the driving state of the vehicle. The method can effectively optimize the driving behavior of the driver by monitoring the driving state of the driver in real time, does not need to rely on a large number of auxiliary vehicle-mounted devices or road side devices, has low application cost and easy popularization, can be widely applied to road traffic management work, is beneficial to reducing the potential hidden danger of road traffic accidents, and is further beneficial to improving the operation efficiency and the safety of road traffic.
Based on any one of the embodiments, a driving behavior optimization method is provided, in which a driving state of a vehicle is determined according to a ratio, specifically: if the ratio is smaller than a first threshold value, determining that the driving state of the vehicle is an idling state; if the ratio is greater than the first threshold value and less than the second threshold value, determining that the running state of the vehicle is a good state; and if the ratio is larger than the second threshold value, determining that the driving state of the vehicle is a dangerous state.
Specifically, in the embodiment of the present invention, after the ratio between the current speed of the vehicle and the preset speed limit is obtained through calculation, the ratio is compared with the first threshold and the second threshold. In the embodiment of the present invention, the first threshold and the second threshold are preset, the first threshold is set to 0.7, and the second threshold is set to 1. On the basis, if the ratio is smaller than the first threshold value, that is, the current speed of the vehicle is smaller than the preset speed limit value of 0.7 times, it indicates that the current speed of the vehicle is slow, and at this time, it is determined that the driving state of the vehicle is in an idle state. The idling state indicates that the current driving speed of the driver is slow and the driver is required to perform accelerated driving. If the ratio is greater than the first threshold and less than the second threshold, that is, the current speed of the vehicle is greater than 0.7 times of the preset speed limit and less than the preset speed limit, the current speed of the vehicle is better, and the driving state of the vehicle can be determined to be in a good state. The good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously. If the ratio is greater than the second threshold value, that is, the current speed of the vehicle is greater than the preset speed limit value, it indicates that the current speed of the vehicle is overspeed, and at this time, the driving state of the vehicle can be determined to be a dangerous state. The dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving.
According to the driving behavior optimization method provided by the embodiment of the invention, under the condition that the driving scene of the vehicle is a free driving scene, the driving state of the vehicle can be effectively determined by comparing the current speed of the vehicle with the preset speed limit value, and the driving behavior can be optimized by a driver according to the driving state of the vehicle.
Based on any one of the embodiments, a driving behavior optimization method is provided, in which a driving state of a vehicle is determined according to a first ratio and a second ratio, specifically: if the first ratio is smaller than the first threshold value or the second ratio is larger than the third threshold value, determining that the running state of the vehicle is in an idle state; if the first ratio is larger than the first threshold and smaller than the second threshold, or the second ratio is larger than the fourth threshold and smaller than the third threshold, determining that the running state of the vehicle is a good state; and if the first ratio is larger than the second threshold or the second ratio is smaller than the fourth threshold, determining that the running state of the vehicle is a dangerous state.
Specifically, in the embodiment of the present invention, after the first ratio and the second ratio are obtained through calculation, the first ratio is compared with the first threshold and the second threshold, and the second ratio is compared with the third threshold and the fourth threshold. In the embodiment of the present invention, the first threshold, the second threshold, the third threshold, and the fourth threshold are preset, and the first threshold is set to 0.7, the second threshold is set to 1, the third threshold is set to 1.2, and the fourth threshold is set to 0.9. In other embodiments, the first threshold, the second threshold, the third threshold, and the fourth threshold may be set according to actual requirements, and are not specifically limited herein. On the basis, if the first ratio is smaller than the first threshold, that is, the current speed of the vehicle is smaller than the preset speed limit value of 0.7 times, or the second ratio is smaller than the third threshold, that is, the distance between the vehicle and the adjacent vehicle is greater than the preset safe distance of 1.2 times, it indicates that the current speed of the vehicle is slow, and at this time, the driving state of the vehicle can be determined to be the idle state. The idling state indicates that the current driving speed of the driver is slow and the driver is required to perform accelerated driving. If the first ratio is greater than the first threshold and less than the second threshold, that is, the current speed of the vehicle is greater than 0.7 times the preset speed limit and less than the preset speed limit, or the second ratio is greater than the fourth threshold and less than the third threshold, that is, the distance between the vehicle and the adjacent vehicle is greater than 0.9 times the preset safety distance and less than 1.2 times the preset safety distance, it is indicated that the current speed of the vehicle is better, and the driving state of the vehicle can be determined to be in a good state at this time. The good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously. If the first ratio is greater than the second threshold value, that is, the current speed of the vehicle is greater than the preset speed limit value, or the second ratio is less than the fourth threshold value, that is, the distance between the vehicle and the adjacent vehicle is less than 0.9 times of the preset safety distance, it indicates that the current speed of the vehicle is overspeed, and at this time, the driving state of the vehicle can be determined to be a dangerous state. The dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving.
According to the driving behavior optimization method provided by the embodiment of the invention, under the condition that the driving scene of the vehicle is a following driving scene, the driving state of the vehicle can be effectively determined by comparing the current speed of the vehicle with the preset speed limit value and comparing the distance between the vehicle and the adjacent vehicle with the preset safety distance, so that a driver can optimize the driving behavior according to the driving state of the vehicle.
Based on any one of the embodiments, a driving behavior optimization method is provided, in which the driving state of the vehicle is fed back to the driver, specifically: and determining the display position of the pointer in the dial according to the running state of the vehicle, and displaying the pointer on the dial according to the display position so as to feed back the running state of the vehicle to a driver.
Specifically, in the embodiment of the present invention, the driving state of the vehicle is fed back to the driver through the pointer dial. Firstly, the display position of the pointer in the dial is determined according to the running state of the vehicle, and then the pointer is displayed on the dial according to the display position so as to feed back the running state of the vehicle to a driver. It can be understood that, when the driving state of the vehicle is different, the display position of the pointer in the dial is also different, so that the driver can know the driving state of the vehicle through the display position of the pointer in the dial, and the driver can optimize the driving behavior according to the driving state of the vehicle.
According to the driving behavior optimization method provided by the embodiment of the invention, the display position of the pointer in the dial is determined according to the driving state of the vehicle, and the pointer is displayed on the dial according to the display position so as to feed back the driving state of the vehicle to a driver. The method feeds the driving state of the vehicle back to the driver through the pointer dial, so that the driver can know the driving state of the vehicle accurately and intuitively, and the driver can optimize the driving behavior according to the driving state of the vehicle.
Based on any one of the embodiments above, a driving behavior optimization method is provided, in which a display position of a pointer in a dial is determined according to a driving state of a vehicle, specifically: if the driving state of the vehicle is in an idling state, the display position of the pointer on the dial is a first preset area; if the running state of the vehicle is in a good state, the display position of the pointer on the dial is a second preset area; and if the driving state of the vehicle is a dangerous state, the display position of the pointer on the dial is a third preset area.
Specifically, in the embodiment of the present invention, the display position of the pointer in the dial is determined according to the driving state of the vehicle, and the specific implementation process is as follows:
if the driving state of the vehicle is in the idling state, the display position of the pointer on the dial is the first preset area, that is, if the driving state of the vehicle is determined to be in the idling state, the pointer is displayed in the first preset area of the dial, so that the driver can accurately and intuitively know that the driving state of the vehicle is in the idling state. In addition, while the pointer is displayed in the first preset area of the dial, characters of an idle state are displayed on the dial, and the driving state of the vehicle is reported to be the idle state through voice so as to prompt the driver to accelerate the driving.
If the driving state of the vehicle is in a good state, the display position of the pointer on the dial is the second preset area, that is, when the driving state of the vehicle is determined to be in a good state, the pointer is displayed in the second preset area of the dial, so that a driver can accurately and intuitively know that the driving state of the vehicle is in a good state. In addition, when the pointer is displayed in the second preset area of the dial, the words of 'good state' can be displayed on the dial, and the driving state of the vehicle is reported to be in a good state through voice so as to prompt the driver to keep the current state.
If the driving state of the vehicle is a dangerous state, the display position of the pointer on the dial is a third preset area, that is, when the driving state of the vehicle is determined to be a dangerous state, the pointer is displayed in the third preset area of the dial, so that a driver can accurately and intuitively know that the driving state of the vehicle is a dangerous state. In addition, when the pointer is displayed in the third preset area of the dial, characters of 'dangerous state' can be displayed on the dial, and the driving state of the vehicle is reported to be in the dangerous state through voice so as to prompt the driver to carry out deceleration driving.
Fig. 2 is a schematic view illustrating a relationship between a display position of a pointer in a dial and a driving state according to an embodiment of the present invention, as shown in fig. 2, in the embodiment of the present invention, the dial is divided into three areas, wherein a yellow area is a first preset area, and if the pointer is displayed in the yellow area, the display position represents that the driving state of the vehicle is an idling state at this time; the green area is a second preset area, and if the pointer is displayed in the green area, the driving state of the vehicle is a good state at the moment; the red area is a third preset area, and if the pointer is displayed in the red area, the driving state of the vehicle is a dangerous state at the moment. Wherein, the position (i) is the left boundary position of the dial; the position is the boundary position of the yellow area and the green area; the position (c) is the central position of the green area; the position (c) is the boundary position of the green area and the red area; position (v) is the right boundary position of the dial. In fig. 2, the first preset area, the second preset area and the third preset area are all sector areas, and the sector angle is 30 degrees. In other embodiments, the filling colors and the fan-shaped angle sizes of the first preset area, the second preset area and the third preset area may be set according to actual requirements, and are not specifically limited herein.
In the embodiment of the invention, under the condition that the current driving scene of the vehicle is a free driving scene, if the ratio of the current speed of the vehicle to the preset speed limit value is equal to alpha2If the pointer is in the dial, the display position of the pointer in the dial is the position II in the figure; if the ratio of the current speed of the vehicle to the preset speed limit value is larger than alpha1And is less than alpha2If the pointer is in the dial, the display position of the pointer in the dial is between the first position and the second position in the graph; if the ratio of the current speed of the vehicle to the preset speed limit value is less than or equal to alpha1If the pointer is in the dial, the display position of the pointer in the dial is the position (r) in the graph; if the ratio of the current speed of the vehicle to the preset speed limit value is larger than alpha2And is less than alpha4The display position of the pointer in the dial is between the position II and the position IV in the graph, and if and only if the ratio of the current speed of the vehicle to the preset speed limit value is equal to alpha3(α2<α3<α4) The display position of the pointer in the dial is the third position in the picture, and the third position is in the middle of the dial, which shows that the driving state of the vehicle is optimal; if the vehicle is in motionThe ratio of the front speed to the preset speed limit is equal to alpha4If the pointer is in the dial, the display position of the pointer in the dial is the position (r) in the graph; if the ratio of the current speed of the vehicle to the preset speed limit value is larger than alpha4And is less than alpha5If the pointer is in the dial, the display position of the pointer is between the position (r) and the position (v) in the graph; if the ratio of the current speed of the vehicle to the preset speed limit value is more than or equal to alpha5The display position of the pointer on the dial is the position in the figure (c). Wherein alpha is1The value is 0.55; alpha is alpha2The value of the first threshold is 0.7; alpha is alpha3The value is 0.85; alpha is alpha4The value of the second threshold is 1; alpha is alpha5The value is 1.15. In other embodiments, α1，α2，α3，α4And alpha5The value of (b) can be set according to actual requirements, and is not specifically limited herein.
In addition, when the current driving scene of the vehicle is the following driving scene, if the first ratio is equal to α2Or the second ratio is equal to beta2If the pointer is in the dial, the display position of the pointer in the dial is the position II in the figure; if the first ratio is larger than alpha1And is less than alpha2Or the second ratio is greater than beta2And is less than beta1If the pointer is in the dial, the display position of the pointer in the dial is between the first position and the second position in the graph; if the first ratio is less than or equal to alpha1Or the second ratio is greater than or equal to beta1If the pointer is in the dial, the display position of the pointer in the dial is the position (r) in the graph; if the first ratio is larger than alpha2And is less than alpha4Or the second ratio is greater than beta4And is less than beta2The display position of the pointer in the dial is between the position (r) and the position (r) in the figure, and if and only if the first ratio is equal to alpha3(α2<α3<α4) Or the second ratio is equal to beta3(β4<β3<β2) The display position of the pointer in the dial is the third position in the picture, and the third position is in the middle of the dial, which shows that the driving state of the vehicle is optimal; if the first ratio is equal to alpha4Or the second ratio is equal to beta4The display position of the pointer in the dial isPosition in the figure (iv); if the first ratio is larger than alpha4And is less than alpha5Or the second ratio is greater than beta5And is less than beta4If the pointer is in the dial, the display position of the pointer is between the position (r) and the position (v) in the graph; if the first ratio is greater than or equal to alpha5Or the second ratio is less than or equal to beta5The display position of the pointer on the dial is the position in the figure (c). Wherein alpha is1The value is 0.55; alpha is alpha2The value of the first threshold is 0.7; alpha is alpha3The value is 0.85; alpha is alpha4The value of the second threshold is 1; alpha is alpha5The value is 1.15; beta is a1The value is 1.5; beta is a2The value of the third threshold is 1.2; beta is a3The value is 1; beta is a4The value of the fourth threshold is 0.9; beta is a5The value is 0.8. In other embodiments, α1，α2，α3，α4，α5，β1，β2，β3，β4And beta5The value of (b) can be set according to actual requirements, and is not specifically limited herein.
According to the driving behavior optimization method provided by the embodiment of the invention, the driving state of the vehicle is fed back to the driver through the pointer dial, so that the driver can accurately and intuitively know the driving state of the vehicle, and the driver can optimize the driving behavior according to the driving state of the vehicle.
Fig. 3 is a schematic structural diagram of a driving behavior optimization device according to an embodiment of the present invention, and as shown in fig. 3, the device includes: a first calculation module 31, a second calculation module 32 and a driving behavior optimization module 33, wherein:
the first calculation module 31 is configured to acquire a current position of the host vehicle and a current position of an adjacent vehicle, and determine a distance between the host vehicle and the adjacent vehicle as a target distance according to the current position of the host vehicle and the current position of the adjacent vehicle.
Specifically, first, the first calculation module 31 acquires the current position of the own vehicle through the navigation system of the own vehicle, and at the same time, the first calculation module 31 acquires the current position of the neighboring vehicle through the internet of vehicles. The current position of the host vehicle and the current position of the neighboring vehicle respectively refer to the geographical position coordinate information of the host vehicle at the current moment and the geographical position coordinate information of the neighboring vehicle at the current moment.
Further, after obtaining the current position of the host vehicle and the current positions of the neighboring vehicles, the first calculation module 31 determines the distance between the host vehicle and the neighboring vehicles as the target distance according to the current positions of the host vehicle and the neighboring vehicles. That is, the first calculation module 31 calculates the distance between the host vehicle and the neighboring vehicle as the target distance, based on the geographical position coordinate information of the host vehicle at the current time and the geographical position coordinate information of the neighboring vehicle at the current time.
The second calculating module 32 is configured to obtain a current speed of the vehicle, determine a vehicle headway according to the target distance and the current speed of the vehicle, and calculate a ratio between the current speed of the vehicle and a preset speed limit value if the vehicle headway is greater than a critical headway.
Specifically, on the basis of the above technical solution, the second calculating module 32 obtains the current speed of the host vehicle through the navigation system of the host vehicle, and on this basis, the second calculating module 32 determines the headway of the host vehicle according to the target distance and the current speed of the host vehicle. The headway refers to the time interval when two continuous vehicle headways pass through a certain section in a vehicle queue running on the same lane.
Further, after obtaining the headway of the vehicle, the second calculation module 32 compares the headway of the vehicle with the critical headway, and if the headway of the vehicle is greater than the critical headway, it may be determined that the current driving scene of the vehicle is a free driving scene. It should be noted that, in the free-running scene, the driving behavior of the driver is not necessarily restricted by the neighboring vehicle, but only the driving speed of the driver is restricted. Therefore, after determining that the current driving scene of the host vehicle is a free driving scene, the second calculation module 32 further calculates a ratio of the current speed of the host vehicle to the preset speed limit value.
The driving behavior optimization module 33 is configured to determine a driving state of the vehicle according to the ratio, and feed back the driving state of the vehicle to the driver, so that the driver optimizes the driving behavior according to the driving state of the vehicle.
Specifically, on the basis of the above technical solution, the driving behavior optimization module 33 determines the driving state of the vehicle according to the ratio obtained by the above calculation, and feeds back the driving state of the vehicle to the driver, so that the driver optimizes the driving behavior according to the driving state of the vehicle. In the embodiment of the present invention, the driving state is divided into an idling state, a good state, and a dangerous state. The idle state indicates that the current driving speed of the driver is low, and the driver is required to accelerate driving; the good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously; the dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving.
Based on any of the above embodiments, the second calculating module 32 is further configured to calculate a ratio of the current speed of the vehicle to the preset speed limit value as a first ratio, and calculate a ratio of the target distance to the preset safe distance as a second ratio, if the headway of the vehicle is not greater than the critical headway.
Specifically, in the embodiment of the present invention, after the vehicle headway is obtained, the second calculating module 32 compares the vehicle headway with the critical headway, and if the vehicle headway is not greater than the critical headway, it may be determined that the current driving scene of the vehicle is a following driving scene. In the following driving scene, it is necessary to restrict not only the driving speed of the driver but also the distance between the host vehicle and the adjacent vehicle. Therefore, after determining that the current driving scene of the vehicle is the following driving scene, the second calculation module 32 further calculates a ratio of the current speed of the vehicle to the preset speed limit value, and uses the ratio as the first ratio, and calculates a ratio of the target distance to the preset safe distance, and uses the ratio as the second ratio. Wherein, the target distance refers to the distance between the current host vehicle and the adjacent vehicle; the preset safety interval may be pre-calculated by a safety interval calculation model.
The driving behavior optimization module 33 is further configured to determine a driving state of the vehicle according to the first ratio and the second ratio, and feed back the driving state of the vehicle to the driver, so that the driver optimizes the driving behavior according to the driving state of the vehicle.
Specifically, the driving behavior optimization module 33 determines the driving state of the vehicle according to the first ratio and the second ratio obtained by the above calculation, and feeds back the driving state of the vehicle to the driver, so that the driver optimizes the driving behavior according to the driving state of the vehicle. In the embodiment of the present invention, the driving state is divided into an idling state, a good state, and a dangerous state. The idle state indicates that the current driving speed of the driver is low, and the driver is required to accelerate driving; the good state represents that the current driving behavior of the driver is better, and the driver is required to keep the current driving behavior continuously; the dangerous state indicates that the current driving speed of the driver is high, and the driver is required to perform deceleration driving.
The driving behavior optimization device provided in the embodiment of the present invention specifically executes the processes of the above method embodiments, and please refer to the contents of the above method embodiments in detail, which is not described herein again.
The driving behavior optimization device provided by the embodiment of the invention can effectively optimize the driving behavior of the driver by monitoring the driving state of the driver in real time, does not need to rely on a large amount of auxiliary vehicle-mounted equipment or roadside equipment, has low application cost and easy popularization, can be widely applied to road traffic management work, is beneficial to reducing the potential hidden danger of road traffic accidents, and is further beneficial to improving the operation efficiency and the safety of road traffic.
Fig. 4 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention. Referring to fig. 4, the electronic device includes: a processor (processor)41, a memory (memory)42, and a bus 43; wherein, the processor 41 and the memory 42 complete the communication with each other through the bus 43; the processor 41 is configured to call the program instructions in the memory 42 to execute the method provided by any of the above method embodiments, for example, including: acquiring the current position of the vehicle and the current position of an adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle; acquiring the current speed of the vehicle, determining the headway of the vehicle according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the headway of the vehicle is greater than the critical headway; and determining the driving state of the vehicle according to the ratio, and feeding back the driving state of the vehicle to the driver so that the driver optimizes the driving behavior according to the driving state of the vehicle.
Furthermore, the logic instructions in the memory 42 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes: acquiring the current position of the vehicle and the current position of an adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle; acquiring the current speed of the vehicle, determining the headway of the vehicle according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the headway of the vehicle is greater than the critical headway; and determining the driving state of the vehicle according to the ratio, and feeding back the driving state of the vehicle to the driver so that the driver optimizes the driving behavior according to the driving state of the vehicle.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A driving behavior optimization method, comprising:
acquiring the current position of the vehicle and the current position of an adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle;
acquiring the current speed of the vehicle, determining the vehicle headway according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the vehicle headway is larger than the critical headway;
determining the driving state of the vehicle according to the ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes driving behaviors according to the driving state of the vehicle; the method for optimizing the driving behavior of the vehicle comprises the following steps of: if the driving state of the vehicle is determined to be the idling state, the current driving state of the vehicle is fed back to the driver to enable the driver to carry out accelerated driving; if the driving state of the vehicle is determined to be a good state, the current driving state of the vehicle is fed back to the driver to enable the driver to continuously keep the current driving behavior; if the driving state of the vehicle is determined to be a dangerous state, the current driving state of the vehicle is fed back to the driver to be the dangerous state, so that the driver can drive in a speed reduction mode;
if the headway of the vehicle is not larger than the critical headway, calculating the ratio of the current speed of the vehicle to a preset speed limit value as a first ratio, and calculating the ratio of the target distance to a preset safe distance as a second ratio;
determining the driving state of the vehicle according to the first ratio and the second ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes driving behaviors according to the driving state of the vehicle;
after the vehicle headway is obtained, comparing the vehicle headway with a critical headway, if the vehicle headway is not larger than the critical headway, determining that the current driving scene of the vehicle is a following driving scene, wherein in the following driving scene, the driving speed of a driver is not only required to be restrained, but also the distance between the vehicle and an adjacent vehicle is required to be restrained, after the current driving scene of the vehicle is determined to be the following driving scene, further calculating the ratio of the current speed of the vehicle to a preset speed limit value, taking the ratio as a first ratio, simultaneously calculating the ratio of a target distance to a preset safety distance, and taking the ratio as a second ratio, wherein the target distance refers to the distance between the current vehicle and the adjacent vehicle; the preset safety interval can be pre-calculated through a safety interval calculation model, wherein the safety interval calculation model is as follows:
wherein S is a preset safety interval; s0The minimum distance from the adjacent vehicle when the vehicle stops; v1Is the current speed of the host vehicle; v2Is the current speed of the neighboring vehicle; t is the response time of the driver to brake; psi is the adhesion coefficient of the tire and the road surface; and i is a road resistance coefficient.
2. The method according to claim 1, characterized in that the driving state of the host vehicle is determined from the ratio, in particular:
if the ratio of the current speed of the vehicle to the preset speed limit value is smaller than a first threshold value, determining that the driving state of the vehicle is in an idle state;
if the ratio of the current speed of the vehicle to the preset speed limit value is larger than the first threshold value and smaller than the second threshold value, determining that the running state of the vehicle is a good state;
and if the ratio of the current speed of the vehicle to the preset speed limit value is greater than the second threshold value, determining that the driving state of the vehicle is a dangerous state.
3. The method according to claim 1, wherein the driving state of the host vehicle is determined according to the first ratio and the second ratio, specifically:
if the first ratio is smaller than a first threshold value or the second ratio is larger than a third threshold value, determining that the driving state of the vehicle is in an idle state;
if the first ratio is larger than the first threshold and smaller than a second threshold, or the second ratio is larger than a fourth threshold and smaller than a third threshold, determining that the running state of the vehicle is a good state;
and if the first ratio is larger than the second threshold or the second ratio is smaller than the fourth threshold, determining that the driving state of the vehicle is a dangerous state.
4. The method according to claim 1, characterized in that the driving state of the vehicle is fed back to the driver, in particular:
and determining the display position of the pointer in the dial according to the running state of the vehicle, and displaying the pointer on the dial according to the display position so as to feed back the running state of the vehicle to a driver.
5. The method according to claim 4, characterized in that the display position of the pointer in the dial is determined according to the driving state of the vehicle, and specifically:
if the driving state of the vehicle is an idling state, the display position of the pointer on the dial is a first preset area;
if the running state of the vehicle is in a good state, the display position of the pointer on the dial is a second preset area;
and if the driving state of the vehicle is a dangerous state, the display position of the pointer on the dial is a third preset area.
6. A driving behavior optimization device, comprising:
the first calculation module is used for acquiring the current position of the vehicle and the current position of the adjacent vehicle, and determining the distance between the vehicle and the adjacent vehicle as a target distance according to the current position of the vehicle and the current position of the adjacent vehicle;
the second calculation module is used for acquiring the current speed of the vehicle, determining the headway of the vehicle according to the target distance and the current speed of the vehicle, and calculating the ratio of the current speed of the vehicle to a preset speed limit value if the headway of the vehicle is larger than a critical headway;
if the headway of the vehicle is not larger than the critical headway, calculating the ratio of the current speed of the vehicle to a preset speed limit value as a first ratio, and calculating the ratio of the target distance to a preset safe distance as a second ratio;
determining the driving state of the vehicle according to the first ratio and the second ratio, and feeding back the driving state of the vehicle to a driver so that the driver optimizes driving behaviors according to the driving state of the vehicle;
after the vehicle headway is obtained, comparing the vehicle headway with a critical headway, if the vehicle headway is not larger than the critical headway, determining that the current driving scene of the vehicle is a following driving scene, wherein in the following driving scene, the driving speed of a driver is not only required to be restrained, but also the distance between the vehicle and an adjacent vehicle is required to be restrained, after the current driving scene of the vehicle is determined to be the following driving scene, further calculating the ratio of the current speed of the vehicle to a preset speed limit value, taking the ratio as a first ratio, simultaneously calculating the ratio of a target distance to a preset safety distance, and taking the ratio as a second ratio, wherein the target distance refers to the distance between the current vehicle and the adjacent vehicle; the preset safety interval can be pre-calculated through a safety interval calculation model, wherein the safety interval calculation model is as follows:
wherein S is presetFull spacing; s0The minimum distance from the adjacent vehicle when the vehicle stops; v1Is the current speed of the host vehicle; v2Is the current speed of the neighboring vehicle; t is the response time of the driver to brake; psi is the adhesion coefficient of the tire and the road surface; i is a road resistance coefficient;
the driving behavior optimization module is used for determining the driving state of the vehicle according to the ratio of the current speed of the vehicle to a preset speed limit value or the first ratio and the second ratio, and feeding the driving state of the vehicle back to a driver so that the driver can optimize the driving behavior according to the driving state of the vehicle; the method for optimizing the driving behavior of the vehicle comprises the following steps of: if the driving state of the vehicle is determined to be the idling state, the current driving state of the vehicle is fed back to the driver to enable the driver to carry out accelerated driving; if the driving state of the vehicle is determined to be a good state, the current driving state of the vehicle is fed back to the driver to enable the driver to continuously keep the current driving behavior; and if the driving state of the vehicle is determined to be a dangerous state, feeding back the current driving state of the vehicle to the driver as the dangerous state so that the driver can carry out deceleration driving.
7. An electronic device, comprising:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 5.
8. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1 to 5.
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