KR101360566B1 - Driving pattern analysis device in vehicle - Google Patents

Abstract

The present invention relates to a driving pattern analysis device for a vehicle and specifically, to a technology which quantitatively displays a qualitative measure about the driving habits of a driver. The present invention includes a sensing part for sensing the driving speed and acceleration of a vehicle; a sensor information calculation part for producing a trend line according to the acceleration sensed by the sensing part and for producing a pattern shape corresponding to the trend line; and a display part for displaying the pattern shape produced in the sensor information calculation part into a diagram. [Reference numerals] (110) Transverse acceleration sensing part; (120) Longitudinal acceleration sensing part; (130) Vehicle speed sensing part; (310) Pattern DB; (320) Sensing result collecting part; (330) Pattern shape producing part; (340) Dangerous driving determination part; (400) Display part

Description

Driving pattern analysis device {Driving pattern analysis device in vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving pattern analysis apparatus, and more particularly, to a technique for quantitatively displaying a qualitative expression of a driver's vehicle driving habits.

In the case of driving a vehicle, even if it is the same vehicle, there are differences in the characteristics of its behavior depending on the skill, personality and habit of the driver. Here, the behavior characteristics include accelerator operation at the time of running, steering wheel operation at the time of turning, acceleration at the time of stopping, oscillation acceleration, and the like.

Therefore, it is possible to prevent a traffic accident in advance if the driver himself or the manager or the like can objectively grasp whether the individual driver is in a safe driving orientation or in a dangerous driving tendency to cause an accident.

That is, the driver's vehicle driving habits vary from driver to driver, and particularly, a driver who frequently drives dangerous driving needs to be notified of dangerous driving to draw attention and induce safe driving.

In addition, the fuel efficiency of the vehicle and the timing of parts replacement of the vehicle vary greatly according to the characteristics of the vehicle and the driving pattern of the driver.

For example, a vehicle in which the driver frequently brakes, starts, and steers not only increases fuel consumption, but also wears tires more heavily, and inevitably leads to other parts such as brakes.

As such, the driver's driving pattern is an important factor in determining the durability and economy of the vehicle. Therefore, when the driver's driving pattern can be corrected by storing and comparing the driver's driving pattern, durability and economy of the vehicle can be improved.

The present invention analyzes the driver's driving pattern and displays it so that the driver can be provided with convenience and stability.

In addition, the present invention analyzes the driver's driving pattern to display it in a diagram to present a uniform quantitative indicator, and to provide the driver visually the linkage or pattern between each movement such as deceleration, turning, acceleration.

In addition, the present invention provides a driver's driving pattern visually to the driver to induce safe driving habits and to consider the economics of the vehicle.

Driving pattern analysis apparatus according to an embodiment of the present invention, the sensing unit for sensing the driving speed and acceleration of the vehicle; A sensor information calculator which generates a trend line according to the acceleration value sensed by the sensor and calculates a pattern figure corresponding to the trend line; And a display unit in which the pattern figure calculated by the sensor information calculating unit is displayed in a diagram form.

The present invention analyzes the driver's driving pattern and displays it so that the driver can be provided with convenience and stability.

In addition, the present invention analyzes the driver's driving pattern to display it in a diagram to present a uniform quantitative indicator, and to provide the driver visually the linkage or pattern between each movement such as deceleration, turning, acceleration.

In addition, the present invention provides an effect of providing a driver's driving pattern visually to the driver to induce safe driving habits and to consider the economics of the vehicle.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

1 is a block diagram of a driving pattern analysis apparatus according to an embodiment of the present invention.
2 and 3 is a flow chart for explaining the operation method of the driving pattern analysis apparatus according to another embodiment of the present invention.
4 is a diagram for describing acceleration data sensed by the sensing unit 100 of FIG. 1.
5 is a diagram for explaining a diagram displayed on the display unit 400 of FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the present invention includes a sensing unit 100, a CAN (Car Area Network, 200), a sensor information calculating unit 300, and a display unit 400. Here, the sensing unit 100 includes a lateral acceleration sensor 110, a longitudinal acceleration sensor 120 and the vehicle speed sensor 130. In addition, the sensor information calculator 300 includes a pattern database 310, a sensing result collector 320, a pattern figure calculator 330, and a dangerous driving determiner 340.

The sensing unit 100 is mounted on a vehicle and senses speed and acceleration when the vehicle is driven. Here, the lateral acceleration sensor unit 110 senses the lateral acceleration of the vehicle, and the longitudinal acceleration sensor unit 120 senses the acceleration in the longitudinal direction of the vehicle. In addition, the vehicle speed sensor unit 130 senses a traveling speed of the vehicle.

In addition, the can 200 transmits the output of the sensing unit 100 to the sensor information calculating unit 300 through can communication.

In addition, the sensor information calculator 300 collects the sensing result transmitted from the can 200 and compares the sensing result with the information of the pattern database 310 to calculate a pattern figure of the diagram.

To this end, the sensing result collecting unit 320 collects the sensing result transmitted from the can 200 and stores the acceleration value and the speed of the vehicle. At this time, the sensing result collection unit 320 stores the acceleration value and the speed value from the time when the driver starts to the end of the driving. If the driving distance of the vehicle is long, the sensing result is collected as much as the capacity of the sensing result collecting unit 320.

In the pattern database 310, a plurality of pattern figures for calculating the pattern figures in the diagram are pre-stored in the database.

The pattern figure calculator 330 generates a trend line based on the acceleration G values extracted by the sensing result collector 320. Here, the pattern figure calculator 330 may generate a trend line by using an envelope technique or a Bollinger band.

The pattern figure calculator 330 calculates a pattern figure to be displayed on the diagram based on the trend line. For example, the pattern figure calculating unit 330 records an acceleration pattern in which the acceleration value is the maximum value, and a deceleration pattern in which the acceleration value is the minimum value, and records the pattern in which the acceleration value in the lateral direction becomes the maximum value in the diagram. do.

In addition, the dangerous driving determination unit 340 detects when the driving pattern of the driver enters a dangerous range out of a preset driving range. The dangerous driving determination unit 340 controls to display a warning on the display unit 400 by selecting a level and a type of warning when the driver's driving pattern enters a dangerous range.

In addition, the display unit 400 displays the cluster result applied from the sensor information calculator 300 so that the driver can recognize the result. That is, the display unit 400 displays the pattern information of the figure applied by the sensor information calculating unit 300 in the width and shape on the diagram. Accordingly, the display unit 400 visually provides the driver with the association of the acceleration values on the X-Y coordinates.

Here, the diagram is one of means for expressing each motion as a whole and expresses the front-rear direction and the lateral acceleration in a Lissajous figure on the X-Y coordinate. The Lissajous figure indicates a waveform that appears on the screen when a different signal is input to the X-axis input and the Y-axis input of the oscilloscope. Specific patterns appear according to the phase difference and frequency ratio of the two signals, so that they can be visually recognized.

An operation process according to an embodiment of the present invention having such a configuration will be described with reference to the flowchart of FIG. 2.

First, the lateral acceleration sensor unit 110 senses the lateral acceleration of the vehicle, and the longitudinal acceleration sensor unit 120 senses the acceleration in the longitudinal direction of the vehicle. In addition, the vehicle speed sensor unit 130 senses a traveling speed of the vehicle. The sensing information sensed by the sensing unit 100 is stored in the sensing result collecting unit 320 through the can 200 (step S1).

Subsequently, the pattern figure calculator 330 generates a trend line based on the acceleration G values extracted by the sensing result collector 320 (step S2).

3 illustrates a trend line generated by the pattern figure calculator 330. In FIG. 3, a guide band is set as shown in (A), and a trend line is generated based on the actual acceleration values (B) extracted by the sensing result collector 320. Here, the X axis represents the acceleration value during left and right turning, and the Y axis represents the acceleration value during acceleration and deceleration, respectively.

Here, the pattern figure calculator 330 calculates an ellipse, a rhombus, and a closed curve of a star shape from the trend line of FIG. 3.

Next, the pattern figure calculator 330 calculates a pattern figure corresponding to the trend line by referring to the patterns stored in the pattern database 310 (step S3).

The pattern figure calculator 330 displays the calculated pattern figure in a diagram form on the display unit 400 (step S4).

4 shows a diagram and a screen state displayed on the display unit 400 in an embodiment of the present invention.

The pattern figure calculator 330 calculates a difference between the maximum acceleration value during acceleration of the vehicle and the minimum acceleration value during deceleration of the vehicle. The difference between the left and right lateral acceleration values is calculated.

According to the calculation result, as shown in FIG. 4, driving patterns such as "Aggressive", "Normal", and "Defence", which are aggressive, are displayed on the display unit 400. In the embodiment of Fig. 4, the range of the X axis represents the acceleration range during left and right turning, and the range of the Y axis represents the acceleration range during acceleration and deceleration.

For example, when the difference between the "left turning maximum acceleration value" and the "first turning maximum acceleration value" is 0.8G, it displays as "Aggressive". In addition, when the difference between the "left turning maximum acceleration value" and the "right turning maximum acceleration value" is 0.6G, it displays as "Normal". In addition, when the difference between the "left turn maximum acceleration value" and the "turn right acceleration value" is 0.4G, it is indicated as "Defensive". Here, the difference between the "left turning maximum acceleration value" and the "right turning maximum acceleration value" is calculated as an absolute value.

In the exemplary embodiment of the present invention, the display value of the pattern figure is divided in a range in which the difference between the "left turning maximum acceleration value" and the "first turning maximum acceleration value" is 0.4G to 0.8G, but this value is not limited thereto. It can be changed sufficiently depending on the type and environment of the. According to another example, the difference between the "turn maximum acceleration value" and the "turn maximum acceleration value" may be set to 1.2G for a general vehicle and 2.2G for a high-performance sports vehicle.

In addition, when the difference between the "maximum acceleration value during acceleration" and "minimum acceleration value during deceleration" is 0.8G, it is displayed as "Aggressive". When the difference between the "maximum acceleration value during acceleration" and the "minimum acceleration value during deceleration" is 0.65G, it is expressed as "Normal." In addition, when the difference between the "maximum acceleration value during acceleration" and "minimum acceleration value during deceleration" is 0.5G, it is indicated as "Defensive". Here, the difference between the "maximum acceleration value during acceleration" and the "minimum acceleration value during deceleration" is calculated as an absolute value.

And, when the absolute value of the absolute priority and the acceleration / deceleration value are different, the result of the "aggressive" tendency is output. For example, when the absolute value of left and right lateral acceleration is "Aggressive" and the absolute value of acceleration / deceleration is "Normal", it is displayed on the display unit 400 as "Aggressive".

In addition, according to the embodiment of the present invention, the degree of driving stabilization of the vehicle is displayed in three types of shapes according to the shape of the figure calculated by the pattern figure calculating unit 330.

For example, depending on the shape of the diagram when driving the vehicle, the relationship between vertical and horizontal acceleration is displayed on the display unit 400 in the form of circle "○", triangular "△", X "X", etc. Let them know if you are driving. Here, when the circle "○" is lit, it indicates that the driver is driving stably. When X "x" is lit, it means that the driver is driving without stability.

At this time, the driving for the stability or anxiety is determined based on the driving speed of the vehicle collected by the vehicle speed sensor unit 130 and the acceleration values collected by the lateral acceleration sensor unit 110 and the longitudinal acceleration sensor unit 120. Done. The pattern figure calculating unit 330 determines the degree of stability by determining the result of the rapid start and the rapid braking according to the sensing information of the sensing result collecting unit 320 and displays it on the display unit 400 so that the driver can recognize it. .

An operation process according to another embodiment of the present invention having such a configuration will be described with reference to the flowchart of FIG. 5.

First, the lateral acceleration sensor unit 110 senses the lateral acceleration of the vehicle, and the longitudinal acceleration sensor unit 120 senses the acceleration in the longitudinal direction of the vehicle. In addition, the vehicle speed sensor unit 130 senses a traveling speed of the vehicle. The sensing information sensed by the sensing unit 100 is stored in the sensing result collecting unit 320 through the can 200 (step S10).

Subsequently, the pattern figure calculator 330 generates a trend line based on the acceleration G values extracted by the sensing result collector 320 (step S11).

Next, the dangerous driving determination unit 340 determines whether the driving pattern of the driver enters the dangerous range out of the preset driving range.

When the driver's driving pattern enters the dangerous range, the dangerous driving determination unit 340 selects the level and type of the warning to control the warning to be displayed on the display unit 400 (step S13). When the driving pattern enters the dangerous range, a warning screen such as “dangerous driving” is displayed as shown in FIG. 4 so that the driver can recognize it.

In the case of a typical vehicle, there is a device that displays the instantaneous speed while the vehicle is running or displays the stability of the vehicle's vehicle control system (VDC) in a cluster. However, such a conventional device can only know the alert situation by changing the lighting color on the display screen.

The embodiment of the present invention can recognize whether the driver is aware of his driving pattern and in what pattern it is safe to drive the next driving, or whether it helps the comfort of the vehicle occupant. In other words, the embodiment of the present invention can induce a safe or stable driving habit by distinguishing between a bad case and a good case in association with acceleration.

For example, embodiments of the present invention may quantitatively display qualitative expressions such as "rough" or "driving smoothly" in the driver's vehicle driving habits. Therefore, it is possible to determine whether the driver drove frequently to the destination after driving the vehicle, or whether the driver drove stably to reach the destination.

As such, the embodiment of the present invention displays the driving pattern of the vehicle driver in a diagram to present a uniform quantitative index. And, through this, it is possible to provide the driver with a connection or pattern between the respective motions such as deceleration, turning, and acceleration. Accordingly, it is possible to consider the stability and economy (fuel economy) for the current vehicle movement.

Claims (12)

Sensing unit for sensing the driving speed and acceleration of the vehicle;
A sensor information calculating unit generating a trend line according to the acceleration value sensed by the sensing unit, and calculating a pattern figure corresponding to the trend line; And
And a display unit in which the pattern figure calculated by the sensor information calculating unit is displayed in a diagram form. The apparatus of claim 1, wherein the sensing unit
Transverse acceleration sensor unit for sensing the acceleration in the lateral direction of the vehicle;
A longitudinal acceleration sensor unit sensing acceleration in the longitudinal direction of the vehicle; And
Driving pattern analysis apparatus comprising a vehicle speed sensor for sensing the driving speed of the vehicle. The driving pattern analysis apparatus of claim 1, further comprising a CAN for transmitting sensing information of the sensing unit to the sensor information calculating unit. The method of claim 1, wherein the sensor information calculating unit
A pattern database which stores in advance a pattern of the pattern figure;
A sensing result collecting unit which stores the information sensed by the sensing unit; And
And a pattern figure calculator configured to generate the trend line according to the acceleration value, and calculate a pattern figure corresponding to the trend line by referring to a pattern figure previously stored in the pattern database. The driving pattern as claimed in claim 4, wherein the pattern figure calculating unit calculates the acceleration value in the left and right directions in the X axis and calculates the acceleration value in the acceleration / deceleration direction in the Y axis to display the pattern figure in the diagram. Analysis device. The driving pattern analysis apparatus according to claim 4, wherein the pattern figure calculation unit displays the information of the pattern figure in a width and a shape on the diagram. The method of claim 4, wherein the sensor information calculating unit
And a dangerous driving determiner configured to warn the user when the sensing information applied from the sensing result collector enters a dangerous range. The method according to claim 1 or 4, wherein the sensor information calculating unit
And a driving pattern on the display unit in response to a difference in acceleration value during acceleration and deceleration. The driving pattern analysis apparatus of claim 8, wherein the sensor information calculating unit classifies the driving pattern by extracting a difference between a maximum acceleration value during acceleration and a minimum acceleration value during deceleration of the vehicle. The method according to claim 1 or 4, wherein the sensor information calculating unit
And a driving pattern displayed on the display unit in response to a difference in acceleration values during left and right turning. The driving pattern analysis apparatus of claim 10, wherein the sensor information calculating unit classifies the driving pattern by extracting a difference between the maximum acceleration value when the vehicle is left turning and the maximum acceleration value when the vehicle is left. The driving pattern analysis of claim 1, wherein the sensor information calculating unit controls to display the driving stabilization degree of the vehicle in the form of a graphic on the display unit based on the driving speed and the acceleration collected by the sensing unit. Device.

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