KR101558690B1 - System for automatic ECO driving according to driver's driving characteristic and method for the same - Google Patents

Abstract

The present invention relates to an automatic economy driving apparatus and method that reflects driver characteristics, and more particularly, to an automatic economy driving apparatus and method that reflects a driver characteristic that automatically changes a driving mode suitable for a driver's characteristic, And methods.
To this end, in the present invention, information on an acceleration characteristic of a driver at the time of driving the vehicle is collected, a driving characteristic of the driver is selected from collected data, and an optimal driving mode suitable for the current driving state is automatically selected from the selected driving characteristic Thus, it is possible to maximize the economical driving according to the driving characteristics even when the driver does not change the driver's artificial mode.

Description

Technical Field [0001] The present invention relates to an automatic economy driving apparatus and a method for driving an automobile,

The present invention relates to an automatic economy driving apparatus and method that reflects driver characteristics, and more particularly, to an automatic economy driving apparatus and method that reflects a driver characteristic that automatically changes a driving mode suitable for a driver's characteristic, And methods.

Today, gasoline and diesel engines using fossil fuels have many problems such as environmental pollution caused by exhaust gas, global warming due to carbon dioxide, and respiratory diseases caused by ozone generation.

In order to solve the above-mentioned problems, a pure electric vehicle that uses a battery as a power source to drive the motor, a hybrid vehicle that uses the engine and a motor as a drive source, and a fuel cell Environmentally friendly electric vehicles such as fuel cell vehicles have been developed

In recent years, the development of a pure electric vehicle that charges a battery and drives a motor among the environmentally friendly electric vehicles has been actively conducted by each automobile manufacturer. In particular, in connection with the commercialization of electric vehicles, Improving vehicle fuel economy is one of the most important problems.

Although the recent advancement in battery technology has increased the amount of electric energy charged to increase the mileage, it has also led to the development of technologies for applying eco-driving technology and maximizing regenerative braking. We are concentrating our efforts to improve fuel efficiency which affects the merchantability.

Particularly, in connection with the economic driving technology of an electric vehicle, since an electric vehicle does not need a transmission unlike an internal combustion engine vehicle, it is unnecessary to configure a speed change stage such as a D stage-3 stage-2 stage-1 stage, Therefore, it is relatively free in the configuration of the shift lever.

For example, the configuration of the shift lever of the electric vehicle has a simple configuration in which only the D-stage and the E (Eco) stage and the B-stage (= L stage) exist in addition to the existing P stage, R stage and N stage.

More specifically, the configuration of the shift lever of the electric vehicle will be described. The D stage is a traveling mode similar to the D (Drive) stage of a general vehicle. The B stage is a mode for increasing the regenerative braking ratio. ) Is a mode for determining the regenerative braking ratio in consideration of the running environment.

Accordingly, when the driver operates the shift lever at the E-stage, the vehicle can travel in the eco mode (economy driving mode), so that the fuel economy can be relatively improved.

Generally, in such an eco mode, it is possible to maximize regenerative braking, which recovers electric energy by minimizing 1) hydraulic braking which suppresses abrupt motor torque fluctuations and restricts rapid acceleration of the vehicle, 2) discharges inertia and braking energy into thermal energy, The control logic for widening the braking range is executed.

However, the application of the above two methods is not suitable for driving the church such as the highway because it weakens the power performance and the driving ability, and is suitable only for the urban driving which repeats the stop-and-go.

In the eco mode, however, it is possible to travel only when the shift lever of the vehicle is set to the E-stage. However, it is inconvenient for the driver to operate the shift lever depending on the situation, There is a real problem in inducing driving to such an eco mode.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a driving force control apparatus, a driving force control method, The present invention is characterized in that the optimum driving mode suitable for the driving state is automatically selected so that the economical driving according to the driving characteristics can be maximized without traveling through the artificial mode change of the driver.

According to an aspect of the present invention, there is provided an acceleration sensor comprising: a sensing unit for collecting longitudinal acceleration values; An analysis unit for analyzing the longitudinal acceleration information collected by the sensing unit and determining a driving propensity of the driver; And a mode determining unit for selecting an optimal driving mode according to the driving propensity information of the driver determined by the analyzing unit.

Also, the analyzing unit is configured to determine the driving tendency of the driver by comparing the collected longitudinal acceleration information with preset reference data, thereby providing an automatic economy driving apparatus reflecting the driver's driving characteristics.

The analyzing unit may be configured to histogram the collected longitudinal acceleration information for each acceleration section and compare the collected longitudinal acceleration information with preset histogrammed reference data to determine a driving tendency of the driver. Provide a driving device.

The mode determining unit determines the deceleration, acceleration, or cruising speed of the vehicle based on the current vehicle acceleration, and selects the optimal mode from a preset mode selection map according to the vehicle's acceleration and running propensity. An automatic economy driving device reflecting driver's driving characteristics is provided.

The mode selection map is set to the B-stage when the vehicle is decelerated or when the vehicle is accelerated. When the vehicle is decelerating or when the vehicle is accelerating, the mode selection map is set to the E-stage In the case of normal driving tendency, it is set to the B-stage for deceleration, the E-stage for acceleration, and the D-stage for constant-speed running. In the case of aggressive driving tendency, the E- And a D-stage is set at a time when the vehicle is running.

The automatic economy driving apparatus may further include a display unit for outputting the determined optimal mode.

The automatic economy driving apparatus may further include a mode change switch for changing the selected mode.

According to another aspect of the present invention, Analyzing acceleration information of the collected vehicle to determine a driving propensity of the driver; And selecting an optimum driving mode according to the determined driving tendency.

In the step of determining the driving tendency of the driver, the collected longitudinal acceleration information is compared with preset reference data to determine the driving tendency of the driver. do.

In the step of determining the driving tendency of the driver, the collected longitudinal acceleration information is histogram-determined for each acceleration section, and the driving tendency of the driver is determined by comparing the collected longitudinal acceleration information with the histogram- Thereby providing an automatic economy driving method that reflects driving characteristics.

In addition, in the step of selecting the optimal driving mode, it is determined whether the vehicle is decelerating, accelerating or traveling at a constant speed by receiving the acceleration of the current vehicle, and the optimum mode is selected from a preset mode selection map according to the acceleration and the driving tendency of the vehicle The present invention also provides an automatic economy driving method that reflects driving characteristics of a driver.

The mode selection map is set to the B-stage when the vehicle is decelerated or when the vehicle is accelerated. When the vehicle is decelerating or when the vehicle is accelerating, the mode selection map is set to the E-stage In the case of normal driving tendency, it is set to the B-stage for deceleration, the E-stage for acceleration, and the D-stage for constant-speed running. In the case of aggressive driving tendency, the E- And a D-stage is set when the vehicle is traveling.

The method may further include the step of outputting the selected mode through the display unit.

The present invention further provides an automatic economy driving method reflecting driver's driving characteristics, characterized by further comprising the step of, when inputting a mode change, deleting existing acceleration information and collecting and analyzing new acceleration information to reselect the optimal driving mode.

As described above, the automatic economy driving apparatus and method reflecting the driver characteristics according to the present invention can select the driving mode according to the driving characteristics of the driver, so that a suitable economic driving mode is automatically selected according to the driving characteristic of the driver So that it is possible to perform an automated economic operation without artificially manipulating the driver.

In addition, according to the present invention, the running characteristic can be periodically or selectively updated to enable real-time economical operation, so that the economical operation can be more efficiently performed by maintaining or changing the currently selected running mode.

Accordingly, in the automatic economical driving apparatus and method reflecting the driver characteristics according to the present invention, by maximizing the economic driving period in consideration of the driving characteristics of the driver from the collected driving information, It is possible to implement a more economical economic operation mode in conjunction with ICT information as needed.

FIG. 1 illustrates a preferred embodiment of an automatic economical driving apparatus that reflects driving characteristics of a driver according to the present invention.
FIG. 2 shows an example of a histogram showing acceleration / deceleration times for each acceleration section for selecting driver driving characteristics in the present invention,
FIG. 3 shows a flowchart of a preferred embodiment of the automatic economy driving method reflecting the driving characteristics of the driver according to the present invention.

The present invention relates to an automatic economical driving apparatus and method reflecting driver's driving characteristics, and in particular, to provide an apparatus that enables economical operation of a vehicle by adjusting a regenerative braking ratio at the time of a third running There is a point.

To this end, in the present invention, the driving characteristics of the driver are determined according to the longitudinal acceleration characteristics of the driver, and the regenerative braking ratio of the electric vehicle is adjusted according to the determined driving characteristics of the driver. , And the operation for increasing the substantial travelable distance is performed.

Particularly, in the present invention, three modes of running, that is, a braking mode (B stage) with a large regenerative braking ratio, an economical mode (E stage) The driving mode in which the regenerative braking ratio is maximized can be automatically selected according to the driving characteristics of the driver.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an automatic economical driving apparatus and method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic configuration of an automatic economical driving apparatus reflecting driver's driving characteristics according to the present invention.

As shown in FIG. 1, the automatic economical driving apparatus reflecting driver's driving characteristics according to the present invention includes a sensing unit 10 for collecting longitudinal acceleration values, longitudinal acceleration information collected by the sensing unit 10 And a mode determination unit (30) for selecting an optimum mode according to information indicating an operation tendency provided by the analysis unit (20) and the analysis unit (20).

More specifically, the sensing unit 10 is configured to collect current closing speed information of a current vehicle through a G sensor or the like attached to the vehicle, and may be additionally provided with speed information of the vehicle if necessary.

The analysis unit 20 is configured to analyze the acceleration information so as to analyze the driving propensity of the driver from the acceleration information or speed and acceleration information collected from the sensing unit 10. [

For example, in the automatic economical driving apparatus reflecting the driving characteristics of the driver according to the present invention, the acceleration information of the vehicle collected from the sensing unit 10 is collected as histogram information of a predetermined section of distance or time, Thereby analyzing the driving tendency of the driver.

To this end, the analysis unit 20 of the present invention may be configured to divide the driving propensity of the driver into two or more standardized inclination modes, and to include reference data representing the acceleration information in the regular inclination mode.

The depression rate information is compared with the reference data stored in the analysis unit 20, and the driving tendency indicating the driver's driving characteristics is determined according to the comparison result.

For example, it is possible to calculate the average acceleration within a specific time or distance section from the collected acceleration information, and then compare the average acceleration with the reference data for distinguishing the driving tendency. In other words, when the acceleration is 0G to 0.4G in a specific information collecting section, it is classified as a defensive driving tendency. On the other hand, when the acceleration is 0.4G to 0.8G, (Offensive) driving tendency.

Meanwhile, according to another embodiment of the present invention, the acceleration information obtained by histogram analysis may be calculated by the analyzing unit through the depression rate information collected by the sensing unit 10.

In this connection, Figure 2 is a section of the size as of the Figure 2 0.1m / s ² as an example of what indicated by flower histogram of the collected information from the sensing section of the automatic deceleration economy driving device reflecting the driver's driving characteristics in accordance with the present invention Acceleration is classified by each acceleration, and the number of times of deceleration is displayed for each divided section.

As shown in FIG. 2, the acceleration information calculated by histogramming is likewise histogrammed and compared with the reference data for each driving characteristic stored in advance in the analysis unit.

Therefore, the driving tendency of the driver is selected by selecting the reference data that best matches the current acceleration information among the reference data representing the respective driving characteristics. Here, the selection of the reference data corresponding to the current acceleration information can be considered from the similarity of each histogram type, and the selection logic for the concrete judgment can be appropriately adopted within the range of selecting the similarity.

When the driving propensity of the driver is determined based on the information on the depreciation rate of the vehicle, the preset optimal driving mode is selected according to the determined driving propensity and the current driving state.

The driving state information that can be considered for selecting the driving mode may be a driving state based on the acceleration information, that is, deceleration, acceleration, or cruising speed.

Table 1 below shows a mode selection map for selecting the driving mode according to the driving tendency and the speed change.

Defensive Normal Offensive deceleration B B E Acceleration B E D Constant speed E D D

As shown in Table 1, in the case of a defensive running tendency, since the deceleration is maximized while the deceleration is accelerated immediately during acceleration, it is set to the B-stage capable of maximizing the regenerative braking , And set to the E-stage at constant speed.

On the other hand, in the case of the normal driving tendency, the deceleration is set to the B-stage for maximizing the regenerative braking, while the acceleration is set to the E-stage while the D-stage is set for the constant-

In the case of an aggressive driving tendency, it is set to the E-stage in deceleration and set to the D-stage in consideration of the driver's tendency to secure sufficient driving performance.

The mapped data in Table 1 is one example, and it is possible to selectively map an appropriate driving mode in consideration of the driver's tendency in other ways.

In addition, it is possible to set various intervals according to the magnitude of the depreciation speed, and to match the running mode for each section without dividing into the three cases of deceleration, acceleration and constant speed as described above, and the regenerative braking amount can be varied It is also possible to add a running mode to be set so that a variable regenerative braking amount can be obtained in the running mode.

In addition, the automatic economy driving apparatus reflecting the driver driving characteristics according to the present invention may selectively output the determined optimal mode to provide the driver with information on the current driving mode.

For example, the mode determination unit 30 may be configured to display the driving mode of the vehicle currently driving through the display unit 40 displayed in the cluster. In this case, information on the driver's propensity It can also be configured to be bundled together.

Although not shown in FIG. 1, a mode change switch for changing the selected mode can be installed around the driver's seat. When the driver presses the mode change switch, the existing acceleration information is deleted, It can also be configured to proceed.

3 is a flowchart illustrating an automatic economical driving method that reflects driving characteristics of a driver according to a preferred embodiment of the present invention.

As shown in FIG. 3, in the automatic economy driving method that reflects the driver driving characteristics according to the present invention, the acceleration information of the vehicle is collected (S110), and the collected acceleration information is analyzed (S120).

In the step of analyzing the acceleration information (S120), the previously stored reference data and the collected acceleration information are compared and analyzed, and the driving propensity of the driver is determined according to the acceleration information analysis result.

When the driving tendency of the driver is determined, the step S130 of selecting the optimum traveling mode is performed in accordance with the determined driving tendency. In this optimal driving mode selection step, driving state information of the current driving vehicle may be considered. Preferably, as shown in FIG. 3, the current acceleration information is input and the current acceleration information and the driving propensity are set in advance The optimum mode can be selected according to the selected map.

Here, the mode selected in the above step may be configured to be outputted to the driver through the display unit (S140).

Meanwhile, when the driver inputs the mode change switch in the course of running in the selected mode, the mode is changed (S150). In this case, the existing acceleration information is deleted (S160) The driver's driving tendency is determined, and a series of processes (S110 to S140) for selecting the optimum mode is performed again.

While the present invention has been described with reference to the preferred embodiments, those skilled in the art will appreciate that modifications and variations are possible in the elements of the invention without departing from the scope of the invention. In addition, many modifications may be made to the particular situation or material within the scope of the invention, without departing from the essential scope thereof. Therefore, the present invention is not limited to the detailed description of the preferred embodiments of the present invention, but includes all embodiments within the scope of the appended claims.

10: sensing unit
20: Analytical Department
30: Mode decision unit
40:

Claims (14)

A sensing unit for collecting longitudinal acceleration values;
An analysis unit for analyzing the longitudinal acceleration information collected by the sensing unit and determining a driving propensity of the driver;
And a mode determining unit for selecting an optimum driving mode according to the driving propensity information of the driver determined by the analyzing unit,
Wherein the mode determining unit determines the deceleration, acceleration, or constant speed running of the vehicle based on the current vehicle acceleration, and selects the optimum mode from a preset mode selection map according to the vehicle's acceleration and running propensity Automatic economic operation device reflecting characteristics.
The method according to claim 1,
Wherein the analyzing unit is configured to determine a driving propensity of the driver by comparing the collected longitudinal acceleration information with preset reference data.
The method according to claim 1,
Wherein the analyzing unit is configured to histogram the collected longitudinal acceleration information for each acceleration section and compare the collected longitudinal acceleration information with predetermined histogrammed reference data to determine a driver's propensity to drive. .
delete The method according to claim 1,
The mode selection map is set to the B-stage when decelerating the vehicle or when the vehicle is accelerating, or to the E-stage when the vehicle is traveling at the constant speed, In the case of normal driving tendency, it is set to the B-stage for deceleration, to the E-stage for acceleration, to the D-stage for constant-speed running, to the E-stage for deceleration for aggressive driving tendency, D stage of the automatic economy driving apparatus.
The method of claim 1, 2, 3, or 5,
And a display unit for outputting the determined optimal mode.
The method of claim 1, 2, 3, or 5,
And a mode change switch for changing the selected mode.
Collecting acceleration information of the vehicle;
Analyzing acceleration information of the collected vehicle to determine a driving propensity of the driver;
And selecting an optimum driving mode according to the determined driving tendency,
In the step of selecting the optimal driving mode, it is determined whether the vehicle is decelerating, accelerating or traveling at a constant speed by receiving the acceleration of the current vehicle, and the optimum mode is selected from a preset mode selection map according to the acceleration of the vehicle and the driving tendency The automatic economy driving method reflecting driver's driving characteristics.
The method of claim 8,
Wherein the step of determining the driving propensity of the driver is configured to determine the driving propensity of the driver by comparing the collected longitudinal acceleration information with preset reference data.
The method of claim 8,
Wherein the controller is configured to determine the driving tendency of the driver by comparing the collected longitudinal acceleration information with acceleration histograms by comparing the collected longitudinal acceleration information with predetermined histogrammed reference data, The method of automatic economy driving.
delete The method of claim 8,
The mode selection map is set to the B-stage when decelerating the vehicle or when the vehicle is accelerating, or to the E-stage when the vehicle is traveling at the constant speed, In the case of normal driving tendency, it is set to the B-stage for deceleration, to the E-stage for acceleration, to the D-stage for constant-speed running, to the E-stage for deceleration for aggressive driving tendency, D-stage, wherein the driver's driving characteristic is set to the D-stage.
The method of claim 8,
Further comprising the step of outputting the selected mode through the display unit, when the selected mode is selected in the step of selecting the optimal driving mode.
The method according to any one of claims 8, 9, 10, 12, 13,
Further comprising the step of, when the mode change is input, deleting the existing acceleration information, collecting and analyzing new acceleration information, and reselecting the optimum driving mode.

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