KR19980078473A - Automatic braking method on curved road - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of automatic braking on a curved road. The present invention relates to an automatic braking method on a curved road by automatically detecting a driving speed and a centrifugal force of a steering wheel operated by a driver and automatically braking the vehicle at an appropriate speed. It is to prevent various accidents caused by lane departure caused by embarrassment.

The present invention described above includes a first process of detecting a traveling speed of a vehicle, an angular velocity of a steering wheel operated by a driver, and a centrifugal force of the vehicle; When the detected driving speed, the angular speed of the steering wheel and the centrifugal force of the vehicle are greater than or equal to a predetermined reference value, the brake is automatically operated to reduce the speed and alert the driver.

Description

Automatic braking method on curved road

The present invention relates to braking of a vehicle. More specifically, when driving on a curved road while the vehicle is being driven, the brake may be properly driven according to the speed and the degree of bending of the vehicle, thereby exiting the curved road safely. It relates to an automatic braking method on the road.

In general, when driving on a curved road, particularly a sharp curve road where the vehicle has a high degree of bending, the vehicle is biased outward in the direction of rotation by the centrifugal force. In addition, even when the vehicle in operation maintains the driving speed as it passes or changes the steering wheel in order to pass before the traffic light in front of the vehicle changes, the vehicle is biased outward in the direction of rotation. If a vehicle driving at a high speed does not slow down and steer the steering wheel, the vehicle may pop out and there is a great risk of center line intrusion or crash.

Therefore, the driver enters a curved road while driving a vehicle, or reduces the vehicle at a constant speed by operating a brake to turn left and right, and enters a curved road by operating a steering wheel, and when the vehicle exits the curved road, the accelerator pedal is again used. By operating it, you will drive safely and smoothly.

However, if the driver suddenly encounters a sharp curve while driving the vehicle at high speed, or if the brake operation is delayed due to inexperienced driving, the driver is separated from his driving lane as described above, and faces the vehicle facing the center line. There was a problem that caused a major accident, such as crashing or falling over the road boundary yellow line to the cliff. In particular, when driving at night, the front view is short, there is a risk of reducing the speed by stepping on a sudden brake when encountering a sharp curve road.

Accordingly, the present invention is to improve the above problems of the prior art by detecting the degree of operation of the steering wheel handled by the driver, the driving speed and the centrifugal force of the vehicle to automatically brake the vehicle at an appropriate speed, the driver's immature An object of the present invention is to provide an automatic braking method on a curved road that can prevent various accidents caused by lane departure due to embarrassment.

The automatic braking method on a curved road for achieving the above object of the present invention includes a first step of detecting the traveling speed of the vehicle, the angular speed of the steering wheel handled by the driver and the centrifugal force of the vehicle; When the detected driving speed, the angular speed of the steering wheel and the centrifugal force of the vehicle is greater than or equal to a predetermined reference value, the brake may be operated to reduce the speed and alert the driver.

1 is a block diagram of an automatic braking apparatus in a curved road for implementing the present invention.

2 is a flow chart of the automatic braking process in a curved road according to the present invention.

Explanation of symbols for the main parts of the drawings

100: control unit 102: vehicle speed detection unit

104: handle angle detection unit 106: centrifugal force detection unit

110: brake drive unit 120: alarm sound generating unit

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

1 is a block diagram of an automatic braking apparatus on a curved road for implementing the present invention, and as shown therein, a vehicle speed detector 102 for detecting a current speed of a vehicle; A handle angle detection unit 104 for detecting an angle of a handle operated by a driver; A centrifugal force detecting unit 106 that detects the centrifugal force of the vehicle generated as the steering wheel is operated when the vehicle travels left, right or bent; Control unit for comparing the respective values detected by the vehicle speed detection unit 102, the handle angle detection unit 104, the centrifugal force detection unit 106 and a predetermined reference value and generates a brake control signal and an alarm sound control signal according to the result 100; A brake driving unit 110 for operating a brake according to a control signal from the control unit 100; Alarm sound generating unit 120 for generating a corresponding alarm sound in accordance with the alarm sound control signal of the control unit 100.

2 is a flowchart of an automatic braking process on a curved road according to an exemplary embodiment of the present invention, as illustrated in the present disclosure, detecting a driving speed of a vehicle, an angle of a steering wheel operated by a driver, and a centrifugal force of the vehicle; Comparing the detected driving speed with the set reference speed; Comparing the angle of the steering wheel operated by the user with the reference angle when the driving speed of the vehicle is greater than the reference speed; Comparing the detected centrifugal force with a reference value of a predetermined centrifugal force when the angle of the handle operated by the user is greater than a reference angle; When the centrifugal force is greater than the reference centrifugal force, the step of driving the brake and generating an alarm sound informs the driver.

The present invention made as described above will be described in detail with reference to FIGS. 1 and 2 as follows.

First, when the driver is driving the vehicle, as shown in FIG. 1, the vehicle speed detector 102 detects the speed of the vehicle at a predetermined cycle, and the steering wheel angle detector 104 operates the steering wheel operated by the driver. That is, the rotation angle of the handle is detected at a constant cycle. In addition, in the centrifugal force detecting unit 106, when the driver runs on a left, right turn, U-turn or a curved road, the centrifugal force is generated according to the degree of operation of the steering wheel operated by the driver.

That is, when the driver rotates the steering wheel to the left by a certain angle while driving, the vehicle generates a centrifugal force that is pushed to the right in proportion to the body weight and the traveling speed. On the contrary, if the driver rotates the steering wheel to the right at a certain angle while driving, a centrifugal force is generated that the vehicle is pushed to the left in proportion to the body weight and the driving speed.

In this way, the centrifugal force of the vehicle generated during driving is detected by the centrifugal force detecting unit 106 such as a centrifugal force sensor.

The vehicle speed, steering wheel angle, and centrifugal force detected in the above are received from the controller 100 and compared with each preset reference value. First, the vehicle is traveling at high speed, and the greater the angle of the steering wheel handled by the driver, the greater the centrifugal force, and the greater the risk of an accident on a curved road. Therefore, in consideration of the above, reference values for the vehicle speed, the steering angle of the steering wheel, and the centrifugal force are set.

On the other hand, when the vehicle speed, the angle of the steering wheel and the centrifugal force detected by the vehicle speed detection unit 102, the steering wheel angle detection unit 104, and the centrifugal force detection unit 106 are determined to be equal to or greater than each reference value set as described above, the driver separately brakes the vehicle. Even if the operation is not performed, the control unit 100 appropriately drives the brake according to the speed of the vehicle and reduces the speed to a constant speed. In addition, by driving the alarm sound generating unit 120 under the control of the control unit 100, an appropriate alarm sound is sounded so that the driver can recognize the automatic deceleration driving.

As described above, the automatic braking method on the curved road according to the invention detects the degree of operation of the steering wheel operated by the driver, the driving speed and the centrifugal force of the vehicle, and automatically brakes the vehicle at an appropriate speed. There is an effect that can prevent in advance various accidents caused by the driver's immature driving or lane departure, which is likely to be caused by embarrassment.

Claims (2)

A first step of detecting a driving speed of the vehicle, an angle of a steering wheel operated by the driver, and a centrifugal force of the vehicle; When the detected driving speed, the steering angle and the centrifugal force of the vehicle is greater than each preset reference value, the brake is automatically operated to reduce the speed to a certain speed, and the second process of warning the driver of the curved road is performed. Automatic braking method. The method of claim 1, wherein the second process comprises: comparing the traveling speed of the detected vehicle with a set reference speed; Comparing the angle of the steering wheel operated by the user with the reference angle when the driving speed of the vehicle is greater than the reference speed; Comparing the detected centrifugal force with a reference value of the preset centrifugal force when the angle of the handle operated by the user is greater than the reference angle; When the centrifugal force is greater than the reference centrifugal force, the braking method on the curved road characterized in that the step of driving the brake and generating an alarm sound to inform the driver.