KR19980069320A - Collision warning device and method of a vehicle having a sensor interlocked with a steering wheel - Google Patents

Abstract

An optical sensor for measuring the distance to the vehicle in front, a steering angle sensor that detects the steering angle of the steering wheel and converts it into an electrical signal, and converts it into an electrical signal after detecting the speed of the vehicle and outputs it. From the light sensor and the vehicle speed sensor while mechanically interlocking the vehicle speed sensor, the start switch for starting the driver, and the optical sensor according to a signal input from the steering angle sensor when the start switch is turned on. Control means for analyzing an input signal and outputting a control signal to warn of a potential collision with a vehicle ahead, and an optical axis driving means for changing an optical axis of the optical sensor according to a signal input from the control means; And alarm display means for displaying an alarm in accordance with the signal input from the control means. The present invention provides a collision warning device and a method of a vehicle having a sensor interlocked with a steering wheel by accurately adjusting an optical output shaft of an optical sensor for distance sensing in conjunction with a steering wheel. .

Description

Collision warning device and method of a vehicle having a sensor interlocked with a steering wheel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collision warning device and a method of a vehicle having a sensor interlocked with a steering wheel. More specifically, the light output shaft of an optical sensor for distance sensing is variable by interlocking with a steering wheel. The present invention relates to a collision warning device and a method of a vehicle having a sensor interlocked with a steering wheel that can accurately detect a vehicle ahead.

In automobiles, electronically controlled automation techniques are adopted to reduce the driver's driving burden and to drive the vehicle more safely, thereby creating new demand for the vehicle. As a kind of automatic control method of a vehicle as described above, a technology related to an automatic brake device for preventing a collision accident by driving the brake automatically when there is a possibility that the vehicle collides with the front vehicle while driving is being researched and developed. As an example of such an automatic brake device, by installing a foot and a light receiving element in a bumper, when an obstacle appears in front of a certain distance of a vehicle, a signal is detected and the piston of the master cylinder is compressed by the detected signal so that the driver does not press the brake. The automatic brake system, which can prevent a collision in advance by preventing the collision in advance even if there is a collision or prevent a great casualty and property loss, is disclosed in Korean Utility Model Application Publication No. 92- 1043 (published: February 10, 1992) anti-collision brake device using infrared light.

However, as shown in FIG. 1, the conventional automatic brake device is curved while being distributed with a constant angle α in a direction parallel to the traveling direction to which the vehicle body of light output from the optical sensor is directed. In the case of driving (curve road), there is a problem in that the front vehicle cannot be detected.

An object of the present invention is to solve the conventional problems as described above, by adjusting the light output shaft of the optical sensor for the distance detection in conjunction with the steering wheel, which can accurately detect the front vehicle on the curve road, and An object of the present invention is to provide a collision warning device and method for a vehicle having an interlocking sensor.

1 is a view showing the operating range of the laser light sensor on a curved road.

2 is a block diagram illustrating a collision warning device of a vehicle having a sensor interlocked with a steering wheel according to an exemplary embodiment of the present invention.

3 is an operation flowchart of a collision warning method of a vehicle having a sensor interlocked with a steering wheel according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: light receiving unit 20: steering angle sensor

30: vehicle speed sensor 40: microcontroller

50: optical transmission unit 60: optical axis drive unit

70: alarm display part ISW: start switch

As a means for achieving the above object, the configuration of the apparatus of the present invention, an optical sensor for measuring the distance to the front vehicle, a steering angle sensor for detecting the steering angle of the steering wheel and converts it into an electrical signal and outputs it; The vehicle speed sensor detects the speed of the vehicle and converts it into an electrical signal and outputs the electrical signal, a start switch for starting the driver, and a signal input from the steering angle sensor when the start switch is turned on. Control means for analyzing the signals input from the light sensor and the vehicle speed sensor while mechanically interlocking one optical sensor and outputting a control signal for warning if there is a possibility of collision with the preceding vehicle, input from the control means An optical axis drive means for changing the optical axis of the optical sensor according to the signal to be input, and input from the control means Alarm display means for displaying an alarm in accordance with the signal to be made.

The optical sensor includes an optical transmitter for outputting infrared laser light, and an optical receiver for receiving an optical signal reflected from the vehicle ahead.

As a means for achieving the above object, the configuration of the method of the present invention includes determining whether the start switch is turned on when the operation is started, and interlocking the position according to a signal input from the steering angle sensor when the start switch is turned on. Operating the laser light sensor, calculating a distance from the vehicle ahead of the signal detected by the laser light sensor, calculating a current vehicle speed from the signal input from the vehicle speed sensor, and determining whether there is a possibility of collision with the vehicle ahead; For example, if a collision with the preceding vehicle is possible, a warning is displayed and if there is no possibility of collision with the preceding vehicle, the warning is released.

Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

2 is a block diagram illustrating a collision warning device of a vehicle having a sensor interlocked with a steering wheel according to an exemplary embodiment of the present invention. As shown in FIG. 2, a configuration of a collision warning device of a vehicle having a sensor interlocked with a steering wheel according to an embodiment of the present invention includes a light receiving unit 10 for receiving an optical signal reflected by a front vehicle; A steering angle sensor 20 for detecting a steering angle of a steering wheel, a vehicle speed sensor 30 for detecting a speed of a vehicle, a start switch (ISW) for starting a driver, and the light receiving unit 10 and A microcontroller 40 having an input terminal connected to the steering angle sensor 20, a vehicle speed sensor 30, and an output terminal of the start switch ISW, and an optical transmitter having an input terminal connected to the output terminal of the microcontroller 40, respectively. And an optical axis driver 60 and an alarm display unit 70.

The microcontroller 40 uses a built-in analog to digital converter and a memory therein.

The warning display unit 70 includes a speaker for audibly generating a warning sound to the driver or a light emitting diode (LED) for visually generating a red warning signal to the driver.

3 is an operation flowchart of a collision warning method of a vehicle having a sensor interlocked with a steering wheel according to an exemplary embodiment of the present invention. As shown in FIG. 3, the configuration of a collision warning method for a vehicle having a sensor interlocked with a steering wheel according to an embodiment of the present invention includes a step (S10) in which an operation is started when power is applied and initializing all memory variables. Step S20, and reading the signal input from the start switch to determine whether the start switch is on (S30), and when the start switch is turned on, while interlocking the position according to the signal input from the steering angle sensor Operating the sensor (S40), calculating a distance from the vehicle ahead of the signal detected by the laser light sensor (S50), and reading a signal input from the vehicle speed sensor to detect the current vehicle speed (S60). ), Determining whether there is a possibility of collision with the front vehicle (S70), displaying a warning when there is a possibility of collision with the front vehicle (S80), and having no possibility of collision with the front vehicle. In this case, the step of releasing the warning is made (S90).

According to the above configuration, the operation of the collision warning device and method of a vehicle having a sensor interlocked with a steering wheel according to the embodiment of the present invention is as follows.

When the power is applied, the operation procedure shown in FIG. 3, which is programmed and stored in the internal memory of the microcontroller 40, is executed by the microcontroller 40, thereby interlocking with the steering wheel according to the embodiment of the present invention. Operation of the collision warning device of the vehicle provided with the sensor is started (S10).

When the operation is started, the microcontroller 40 initializes all the memory variables (S20) and reads a signal input from the start switch (ISW) to determine whether the start switch (ISW) is turned on (S30). When the start switch ISW is turned on, the microcontroller 40 detects whether there is a vehicle ahead by operating a laser light sensor including the light receiver 10 and the light transmitter 50 (S40). In this case, the microcontroller 40 controls the optical axis driver 60 according to the signal input from the steering angle sensor 20 so that the laser light sensor is mechanically linked with the steering wheel by the optical axis driver 60.

Next, the microcontroller 40 calculates the distance from the vehicle ahead from the signal detected by the laser light sensor (S50), reads the signal input from the vehicle speed sensor 30, and then detects the current vehicle speed ( S60), it is determined whether there is a possibility of collision with the preceding vehicle (S70). The possibility of collision is determined according to the distance between the vehicle in front of the vehicle and the current vehicle speed, and is tabled and stored in the internal memory of the microcontroller 40.

If there is a possibility of collision with the preceding vehicle, the microcontroller 40 displays the warning through the alarm display unit 70 (S80), and releases the warning display if there is no possibility of collision with the preceding vehicle (S90).

As described above, in the embodiment of the present invention, the light output shaft of the optical sensor for distance sensing is variable by interlocking with the steering wheel, so that the sensor is interlocked with the steering wheel having the effect of accurately detecting the front vehicle even on a curved road. A collision warning device and method for a vehicle can be provided. This effect of the present invention can be modified and used by those skilled in the art without departing from the gist of the present invention in the field of alarm device.

Claims (3)

An optical sensor for measuring the distance to the vehicle in front, a steering angle sensor that detects the steering angle of the steering wheel and converts it into an electrical signal, and converts it into an electrical signal after detecting the speed of the vehicle and outputs it. From the light sensor and the vehicle speed sensor while mechanically interlocking the vehicle speed sensor, the start switch for starting the driver, and the optical sensor according to a signal input from the steering angle sensor when the start switch is turned on. Control means for analyzing an input signal and outputting a control signal to warn of a potential collision with a vehicle ahead, and an optical axis driving means for changing an optical axis of the optical sensor according to a signal input from the control means; And alarm display means for displaying an alarm in accordance with the signal input from the control means. Collision warning system for a vehicle having a sensor that works with a steering wheel, characterized in that that. The sensor according to claim 1, wherein the optical sensor comprises an optical transmitter for outputting an infrared laser light and an optical receiver for receiving an optical signal reflected from the front vehicle. Collision warning device of the equipped vehicle. Determining whether the start switch is turned on when the operation is started, operating the laser light sensor while interlocking a position according to a signal input from a steering angle sensor when the start switch is turned on, and a signal detected by the laser light sensor Calculating the distance from the vehicle in front of the vehicle and calculating the current vehicle speed from the signal input from the vehicle speed sensor to determine whether there is a possibility of collision with the vehicle in front of the vehicle. And if there is no possibility, canceling the warning. Crash warning method of a vehicle having a sensor interlocked with a steering wheel.