CN112824125A - Method and device for guiding opening degree of accelerator pedal of vehicle and vehicle - Google Patents
Method and device for guiding opening degree of accelerator pedal of vehicle and vehicle Download PDFInfo
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- CN112824125A CN112824125A CN201911142920.6A CN201911142920A CN112824125A CN 112824125 A CN112824125 A CN 112824125A CN 201911142920 A CN201911142920 A CN 201911142920A CN 112824125 A CN112824125 A CN 112824125A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
The invention relates to the technical field of vehicle control, and provides a method and a device for guiding the opening degree of an accelerator pedal of a vehicle and the vehicle. The method for guiding the opening degree of an accelerator pedal of a vehicle comprises the following steps. Detecting a current speed of the vehicle; determining a target speed at which the vehicle reaches a target location; determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position; when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration; and guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal. The invention can guide the driver to adjust the speed in advance, avoid using larger mechanical braking force to decelerate, and reduce energy loss.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a method and a device for guiding opening degree of an accelerator pedal of a vehicle and the vehicle.
Background
When the current vehicle runs in a speed reducing process, such as turning, speed limiting and other road sections, a driver usually only adjusts the vehicle speed rapidly through a larger braking force when the vehicle is about to reach a target position, but the larger mechanical braking force can lose more energy. With the development of new energy technology, new energy automobiles also develop an energy recovery function, and braking through a large mechanical braking force is not beneficial to energy recovery.
Disclosure of Invention
In view of this, the present invention is directed to a method for guiding an opening degree of an accelerator pedal of a vehicle, so as to guide a driver to adjust a vehicle speed in advance, avoid using a large mechanical braking force to decelerate, and reduce energy loss.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of guiding an accelerator opening degree of a vehicle, the method comprising: detecting a current speed of the vehicle; determining a target speed at which the vehicle reaches a target location; determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position; when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration; and guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
Further, the target position is a position of a traffic sign and/or a position of parking.
Further, the traffic sign includes: at least one of a speed limit sign and a sharp turn sign.
Further, the determining the target speed of the vehicle to reach the target position comprises: when the target position is the position of the speed limit sign, determining that the speed limit on the speed limit sign is the target speed when the vehicle reaches the position of the traffic sign; when the target position is the position of the sharp turning mark, determining a preset speed as a target speed when the vehicle reaches the position of the traffic mark; when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position.
Further, when it is determined that the current speed is greater than the target speed, determining a target opening degree of an accelerator pedal of the vehicle according to the target acceleration includes: calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle; a target opening degree of an accelerator pedal of the vehicle is determined based on the target driving force of the vehicle.
Compared with the prior art, the method for guiding the opening degree of the accelerator pedal of the vehicle has the following advantages that:
firstly, determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position, then determining a target opening degree of an accelerator pedal of the vehicle according to the target acceleration when the current speed is judged to be greater than the target speed, and finally guiding a user to control the opening degree of the accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal. The invention guides the driver to adjust the speed in advance by calculating the target opening degree of the accelerator pedal required in the vehicle deceleration process in advance, avoids using larger mechanical braking force for deceleration and reduces energy loss.
Another object of the present invention is to provide an accelerator pedal opening degree guidance device for a vehicle, which guides a driver to perform braking in advance to slowly adjust a vehicle speed and reduce energy loss.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an accelerator opening degree guide apparatus of a vehicle, the apparatus comprising: the vehicle speed control system comprises a detection unit, a processing unit and a guidance unit, wherein the detection unit is used for detecting the current speed of the vehicle; the processing unit is configured to: determining a target speed at which the vehicle reaches a target location; determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position; when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration; the guiding unit is used for guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
Further, the target position is a position of a traffic sign and/or a position of parking, and the traffic sign includes at least one of a speed limit sign and a sharp turn sign.
Further, the processing unit is configured to: when the target position is the position of the speed limit sign, determining that the speed limit on the speed limit sign is the target speed when the vehicle reaches the position of the traffic sign; when the target position is the position of the sharp turning mark, determining a preset speed as a target speed when the vehicle reaches the position of the traffic mark; when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position.
Further, the processing unit is configured to: calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle; a target opening degree of an accelerator pedal of the vehicle is determined based on the target driving force of the vehicle.
The accelerator pedal opening degree guiding device of the vehicle and the accelerator pedal opening degree guiding method of the vehicle have the same advantages compared with the prior art, and are not repeated herein.
Another objective of the present invention is to provide a vehicle to guide a driver to perform braking in advance to slowly adjust a vehicle speed, so as to reduce energy loss.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle comprising the accelerator pedal opening degree guide apparatus of the vehicle described above.
Compared with the prior art, the vehicle and the method for guiding the opening degree of the accelerator pedal of the vehicle have the same advantages, and are not repeated herein.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a flowchart of an accelerator opening degree guidance method of a vehicle according to an embodiment of the present invention;
fig. 2 is a flowchart of a target opening degree determination method of an accelerator pedal according to an embodiment of the present invention;
FIG. 3 is a schematic view of an accelerator pedal opening guidance display according to an embodiment of the present invention;
FIG. 4 is a schematic view illustrating a limitation of variation of an accelerator pedal opening according to an embodiment of the present invention;
fig. 5 is a block diagram showing a configuration of an accelerator opening degree guidance apparatus for a vehicle according to an embodiment of the present invention.
Description of reference numerals:
1 detection unit 2 processing unit
3 guiding unit
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a flowchart of a method for guiding an accelerator opening degree of a vehicle according to an embodiment of the present invention.
As shown in fig. 1, the method includes:
step S11, detecting a current speed of the vehicle;
for example, the current speed of the vehicle may be detected using a vehicle speed sensor or the like.
Step S12, determining a target speed at which the vehicle reaches a target position;
specifically, in an embodiment of the present invention, the target position may be a position where deceleration of the vehicle is required to meet a speed required at the position, such as a position of a traffic sign and/or a position of parking. The traffic sign is, for example, a speed limit sign or a sharp turn sign. Then, due to the difference in the target positions, the following several cases occur:
firstly, when the target position is the position of the speed limit sign, the speed limit on the speed limit sign is determined to be the target speed when the vehicle reaches the position of the traffic sign. For example, if the speed limit on the speed limit sign is 40km/h, the target speed is 40km/h, that is, when the vehicle reaches the position of the speed limit sign, the speed is reduced to at least 40 km/h;
secondly, when the target position is the position of the sharp turning mark, the preset vehicle speed is determined as the target speed when the vehicle reaches the position of the traffic mark. For example, if the preset vehicle speed is 30km/h, the target speed is 30km/h, that is, when the vehicle reaches the position of the sharp turn sign, the speed is reduced to at least 30km/h, and the 30km/h is only an example of the preset vehicle speed and can be adjusted according to the actual situation;
third, when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position. For example, in the case of a red light or traffic jam in the front, the vehicle needs to be stopped, and thus the speed is reduced to 0 km/h.
It will be appreciated by those skilled in the art that other locations where vehicle deceleration is required to meet the speed required at that location may be targeted.
Step S13, determining the target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position;
specifically, a map may be built in advance in a controller of the vehicle, the position and corresponding coordinates (e.g., longitude and latitude coordinates) of each traffic sign may be marked on the map, and the map may be updated at any time according to the position and coordinates of the red light and traffic jam, so that the positions and corresponding coordinates of all target positions may be obtained. The vehicle is then positioned by a positioning system such as a GPS, so that the position of the vehicle on the map and the corresponding coordinates can be known, and the distance between the vehicle and the target position (preferably, the distance is the travel distance of the vehicle) can be obtained by using the coordinates of the vehicle and the coordinates of the target position.
In addition, it may be set that the target acceleration of the vehicle is determined when the distance between the vehicle and the target position is less than a preset distance, wherein the preset distance may be adjusted. For example, when the vehicle is 500m away from the position of the sharp turn flag, the target acceleration of the vehicle is determined again, and when the vehicle is more than 500m away from the position of the sharp turn flag, the vehicle does not perform any processing.
Then, the target acceleration of the vehicle may be calculated by the following equation:
Vt 2-V0 2＝2aS，
wherein, VtIs a target speed, V, of the vehicle0And the current speed of the vehicle is a, the target acceleration of the vehicle is a, and the distance between the vehicle and the target position is S.
Step S14, when the current speed is judged to be larger than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration;
specifically, as shown in FIG. 2, the target opening degree determination method of the accelerator pedal of the vehicle is as steps S21-S22:
step S21 of calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle;
specifically, the target driving force of the vehicle may be calculated according to the following formula:
Ft-Ff＝ma，
wherein, FtIs a target driving force of the vehicle, FfIs the running resistance of the vehicle, a is the target acceleration of the vehicle, and m is the mass of the vehicle.
Step S22 is a step of determining a target opening degree of an accelerator pedal of the vehicle based on the target driving force of the vehicle.
Specifically, the target torque of the vehicle can be calculated from the target driving force of the vehicle, which is common and will not be described herein. Then, using the target torque of the vehicle, the target opening degree of the accelerator pedal of the vehicle is found by querying also the torque-accelerator pedal opening degree MAP (i.e., accelerator pedal MAP) of the vehicle.
Summarizing steps S21-S22, step S14 of determining a target opening degree of an accelerator pedal of a vehicle is completed.
And step S15, guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
Specifically, the embodiment of the invention may display both the current opening degree of the accelerator pedal and the target opening degree of the accelerator pedal on the display screen by detecting the current opening degree of the accelerator pedal, and prompt the driver whether the opening degree should be increased or decreased. In addition, as shown in fig. 3, in addition to displaying the current opening degree of the accelerator pedal and the target opening degree of the accelerator pedal, a difference value between the current opening degree of the accelerator pedal and the target opening degree of the accelerator pedal (for example, the difference value is positive to indicate that the current opening degree of the accelerator pedal is greater than the target opening degree of the accelerator pedal, or vice versa) may be displayed, and a background color is used to indicate a change in the difference value, for example, the whole is a color, and the color is lighter as the difference value approaches 0; or filling the upper part and the lower part with red and green, wherein the red represents that the current opening degree of the accelerator pedal is larger than the target opening degree of the accelerator pedal, the green represents that the current opening degree of the accelerator pedal is smaller than the target opening degree of the accelerator pedal, and the closer the difference value is to 0, the lighter the color is; the conversion of green and red may also be used, such as green with a difference of 0, then the lighter the green color and the darker the red color as the difference is greater.
In addition, as shown in fig. 4, in order to improve driving stability, the controller of the vehicle may limit the speed of change of the accelerator pedal opening to be changed in a gradient manner, that is, the accelerator pedal opening is linearly changed in a preset proportion to time. The accelerator pedal opening change speed does not exceed the limit even if the driver operates the accelerator pedal opening to change faster or slower. When the accelerator pedal reaches a certain preset opening, i.e. the braking force is completely released by the driver
Fig. 5 is a block diagram showing a configuration of an accelerator opening degree guidance apparatus for a vehicle according to an embodiment of the present invention. As shown in fig. 5, the apparatus includes: the vehicle speed control system comprises a detection unit 1, a processing unit 2 and a guidance unit 3, wherein the detection unit 1 is used for detecting the current speed of the vehicle; the processing unit 2 is configured to: determining a target speed at which the vehicle reaches a target location; determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position; when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration; the guiding unit 3 is used for guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
Further, the target position is a position of a traffic sign and/or a position of parking, and the traffic sign includes at least one of a speed limit sign and a sharp turn sign.
Further, the processing unit 2 is configured to: when the target position is the position of the speed limit sign, determining that the speed limit on the speed limit sign is the target speed when the vehicle reaches the position of the traffic sign; when the target position is the position of the sharp turning mark, determining a preset speed as a target speed when the vehicle reaches the position of the traffic mark; when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position.
Further, the processing unit 2 is configured to: calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle; a target opening degree of an accelerator pedal of the vehicle is determined based on the target driving force of the vehicle.
The accelerator opening degree guidance apparatus of the vehicle described above is similar to the embodiment of the accelerator opening degree guidance method of the vehicle described above, and will not be described again here.
An embodiment of the present invention further provides a vehicle including the accelerator pedal opening degree guidance apparatus for a vehicle described above.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of guiding an accelerator opening degree of a vehicle, characterized by comprising:
detecting a current speed of the vehicle;
determining a target speed at which the vehicle reaches a target location;
determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position;
when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration;
and guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
2. The accelerator opening degree guide method of a vehicle according to claim 1, wherein the target position is a position of a traffic sign and/or a position of parking.
3. The accelerator opening degree guide method of a vehicle according to claim 2, wherein the traffic sign includes:
at least one of a speed limit sign and a sharp turn sign.
4. The accelerator opening degree guide method of a vehicle according to claim 3, wherein the determining the target speed at which the vehicle reaches the target position includes:
when the target position is the position of the speed limit sign, determining that the speed limit on the speed limit sign is the target speed when the vehicle reaches the position of the traffic sign;
when the target position is the position of the sharp turning mark, determining a preset speed as a target speed when the vehicle reaches the position of the traffic mark;
when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position.
5. The accelerator opening degree guide method of a vehicle according to claim 1, wherein the determining a target opening degree of an accelerator pedal of the vehicle according to the target acceleration upon determining that the current speed is greater than the target speed includes:
calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle;
a target opening degree of an accelerator pedal of the vehicle is determined based on the target driving force of the vehicle.
6. An accelerator opening degree guide apparatus of a vehicle, characterized by comprising:
a detection unit, a processing unit and a guidance unit, wherein,
the detection unit is used for detecting the current speed of the vehicle;
the processing unit is configured to:
determining a target speed at which the vehicle reaches a target location;
determining a target acceleration of the vehicle according to the current speed of the vehicle, the target speed and the distance between the vehicle and the target position;
when the current speed is judged to be greater than the target speed, determining the target opening degree of an accelerator pedal of the vehicle according to the target acceleration;
the guiding unit is used for guiding a user to control the opening degree of an accelerator pedal of the vehicle according to the target opening degree of the accelerator pedal.
7. The accelerator pedal opening degree guidance method of a vehicle according to claim 1, wherein the target position is a position of a traffic sign including at least one of a speed limit sign and a sharp turn sign and/or a position of parking.
8. The accelerator opening degree guide apparatus of a vehicle according to claim 7, wherein the processing unit is configured to:
when the target position is the position of the speed limit sign, determining that the speed limit on the speed limit sign is the target speed when the vehicle reaches the position of the traffic sign;
when the target position is the position of the sharp turning mark, determining a preset speed as a target speed when the vehicle reaches the position of the traffic mark;
when the target position is the parking position, 0 is determined as a target speed at which the vehicle reaches the target position.
9. The accelerator opening degree guide apparatus of a vehicle according to claim 6, wherein the processing unit is configured to:
calculating a target driving force of the vehicle based on a running resistance of the vehicle, the target acceleration, and a mass of the vehicle;
a target opening degree of an accelerator pedal of the vehicle is determined based on the target driving force of the vehicle.
10. A vehicle characterized by comprising an accelerator opening degree guide apparatus of the vehicle according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142920.6A CN112824125A (en) | 2019-11-20 | 2019-11-20 | Method and device for guiding opening degree of accelerator pedal of vehicle and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911142920.6A CN112824125A (en) | 2019-11-20 | 2019-11-20 | Method and device for guiding opening degree of accelerator pedal of vehicle and vehicle |
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| CN201911142920.6A Pending CN112824125A (en) | 2019-11-20 | 2019-11-20 | Method and device for guiding opening degree of accelerator pedal of vehicle and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113954633A (en) * | 2021-11-29 | 2022-01-21 | 冯洪坤 | Vehicle control method and device, computer equipment and readable storage medium |
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