KR0145546B1 - Line sensing device for a vehicle - Google Patents

Abstract

The present invention relates to a lane detecting apparatus for an automobile, comprising: a pulse oscillation unit (1) of a predetermined frequency; A light emitting device driver 2 for driving the light emitting device 3 by amplifying the light emitting device; A light emitting element 3 for generating light on the road 11; A light receiving element 4 for receiving light reflected by the center line and the lane 12 of the road 11; A photoelectric conversion unit 5 for converting the incident light into an electrical signal; An amplifier 6 for amplifying the output signal of the photoelectric conversion section 5; A synchronization detector 7 for detecting only a lane detection signal; A waveform shaping section 8 for shaping the distorted signal; An operation indicator lamp 13 for visually displaying a lane departure phase stroke; The buzzer 10 is configured as an alarm sound generating unit 9 for notifying a lane departure, so that a warning sound is generated immediately when a car being driven leaves the lane inadvertently and crosses the adjacent lane or the center line inadvertently, thereby driving the adjacent lane. It is possible to prevent the occurrence of traffic safety accidents such as collisions and collisions with automobiles that are being carried out, thereby preventing human and property damages.

Description

Lane detection device of automobile

1 is a block diagram of a lane detecting apparatus according to the present invention.

Figure 2 is a side view of a vehicle showing a state in which the device of the present invention is installed.

* Explanation of symbols for main parts of the drawings

1 pulse oscillation unit 2 light emitting device driving unit

3: light emitting element 4: light receiving element

5: photoelectric conversion unit 6: amplifier

7 synchronous detector 8 waveform shaping unit

9: alarm sound generating unit 10: buzzer

11: road 12: center line and lane

100: car

The present invention relates to an apparatus for detecting a lane of a vehicle. In particular, the center line and the lane improve the vehicle only to maintain the existing shape, and immediately generate an alarm sound when the vehicle leaves the center line and the lane drawn on the road between driving cars. The present invention relates to a vehicle lane detecting device capable of preventing human and property damage due to an accident.

Most cars have not been equipped with a separate device for detecting a lane.

Therefore, if a driver who drives a car is an experienced driver, he / she can keep his / her lane accurately, but beginners often get out of the lane because they are relatively incapable of performing driving while correctly checking the lane. It was.

If the driving car is out of its lane, it not only interferes with the driving of the car in the adjacent lane, but also causes a large traffic safety accident such as collision and collision between cars, resulting in the loss of life and property damage. There was a risk of wearing.

By the way, if you are out of the lane as described above, not only beginners, but also experienced drivers tired eyes, even if the driving car is out of his lane, it will not recognize this will cause a large traffic accident .

Therefore, in recent years, a mark is formed by applying a paint mixed with a magnetic material along a center separator, and a car is equipped with a magnetic sensor that operates magnetically by the mark. It is disclosed in Japanese Patent Laid-Open No. 6-131595 (May 13, 1994) in which a sensor operates to alert a driver who drives a driving vehicle and its occupant.

However, such a configuration is not only to improve the car, but also must apply a coating material containing magnetic material along the center separator to form a mark, and not only the facility cost is very high, but also the car has a center line unlike the driver's intention. When the vehicle is out of the lane, an alarm does not occur and thus there is a problem in that a collision accident with an adjacent vehicle cannot be prevented.

It is an object of the present invention to improve the vehicle only by leaving the center line and lanes intact, so that the driving vehicle immediately generates an alarm sound when it leaves the lane and crosses the adjacent lane or the center line due to carelessness, resulting in a traffic safety accident such as a collision and a collision. It is to provide a lane detection device for a vehicle that can prevent human life and property damage due to accidents.

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

The apparatus of the present invention, as shown in Figs. 1 and 2, comprises: a pulse oscillator 1 for generating a pulse signal of a predetermined frequency; A light emitting device driver 2 for driving the light emitting device 3 by amplifying a minute signal output from the pulse oscillator 1 to a predetermined level; A light emitting device 3 installed on the rear bottom surface of the front wheel of the vehicle 100 and generating light intermittent at a predetermined frequency toward the road 11; A light receiving element 4 installed on the bottom of the vehicle 100 and receiving the light emitted from the light emitting element 3 when the light is reflected by the center line and the lane 12 of the road 11; A photoelectric conversion unit 5 for converting light incident through the light receiving element 4 into an electrical signal; An amplifier (6) for amplifying the output signal of the photoelectric conversion section (5) to a predetermined level; A synchronization detector 7 for detecting only the lane detection signal by synchronizing the output signal of the amplifier 6 with the output signal of the pulse oscillator 1; A waveform shaping section 8 for shaping the waveform of the lane detection signal output in the distorted state from the synchronization detecting section 7 into a desired waveform; An operation display lamp 13 installed at the front of the driver's seat of the vehicle so as to blink when a predetermined output signal is generated by the waveform shaping unit 8; When the predetermined output signal is generated in the waveform shaping section (8) is characterized by consisting of an alarm sound generating unit (9) for generating an alarm sound through the buzzer (10).

At this time, by installing a separate power control switch (SW) that can be selectively operated by the driver between the respective parts and the battery, the driver selectively drives the present invention only when driving at night, rainy weather and highways In order to prevent the lane detection device from being driven normally, even if Hayeon himself changes lanes arbitrarily, an alarm sound is generated to prevent the operation of the lane.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, the asphalt or the like forming the road 11 has a property of absorbing light, and the center line and the lane 12 drawn in the width corresponding to the vehicle width on the upper surface are coated with glass grains in the paint. It will reflect light from the grains.

Therefore, the light emitting element 13 for irradiating light toward the road 11 and the light receiving receiver 4 for receiving the light are installed on the rear bottom surfaces of the two front wheels of the vehicle 100, whereby If you are out of the lane to the right or to the left, you can immediately detect this.

At this time, since the light irradiated to the road 11 is numerous, such as the sun, street lamps and headlamps of automobiles, the pulse oscillation unit 1 according to the present invention to distinguish the light and the wavelength of the light detecting the center line and the lane, etc. ) To generate a pulse signal of a predetermined frequency.

Therefore, the pulse oscillator 1 generates a pulse having a predetermined frequency different from that of general light, which is a weak signal for driving the light emitting device 3 of the pulse, and thus, the light emitting device driver 2 generates a predetermined level of the pulse. The light emitting element 3 was driven by amplifying the above.

Therefore, if the driver keeps his lane only at night driving, rainy weather, and highway, turning on the power control switch (SW) installed separately from the various switches installed in the existing vehicle, the battery power voltage is supplied to each part. A pulse of a predetermined frequency is generated in the pulse oscillator 1 and amplified to a predetermined level through the light emitting device driver 2, and then input to the light emitting device 3 to generate light intermittent at a predetermined frequency. The road 11 is irradiated.

When the light generated from the light emitting element 3 is irradiated to the asphalt portion (that is, if the car is well driven in the lane), the asphalt portion of the road 11 absorbs the light, so that the light receiving element 4 Although not input between signals, if the steering wheel is misaligned and the front wheel of the vehicle steps on the center line and the lane 12 so as to escape to the left or the right from the currently driving lane, the light emitted from the light emitting element 3 is transmitted to the center line and the lane. The light receiving element 4 is driven because it is reflected by the glass grains in 12 and is incident on the light receiving receiver 4.

When the light receiving element 4 is driven, the photoelectric conversion unit 5 converts light incident through the light receiving element 4 into an electrical signal, at which time the signal output from the photoelectric conversion unit 5 is output. Since the signal is a weak signal, the amplifier 6 amplifies it to a predetermined level and inputs it to the synchronization detector 7.

On the other hand, the light reflected through the center line and the lane 12 of the road 11 is reflected through the light receiving element 4 because all the surrounding light is reflected, including the light generated from the light emitting element (3) The signal output through the amplifier 6 after passing through the photoelectric conversion unit 5 includes the detection signal of all these lights.

Therefore, in the present invention, the synchronization detector 7 is provided at the output terminal of the amplifier 6 so as to detect only the signal having the same synchronization as the output signal of the pulse oscillator 1 among the signals output from the amplifier 6. In addition, it is possible to accurately detect whether the front wheel of the car has stepped on the center line and the lane, thereby preventing the malfunction of the device due to the misdetection of the center line and the lane in advance.

As such, the lane detection signal detected by the synchronization detector 7 is in a state in which distortion (distortion) occurs due to the surrounding environment, high frequency, or the like, and the waveform detection unit 8 forms the desired waveform.

Since the output signal of the waveform shaping unit 8 is directly applied as the operation display lamp 13 driving signal and the alarm sound generator 9 is applied to the buzzer 10, the driver may display the operation display lamp installed in the front part of the driver. Looking at the blinking state of (13) can visually recognize that the car he is driving is leaving the lane, as well as hearing through the alarm sound generated from the buzzer (10).

That is, when a driver is driving a car and knows that he or she has left the center line and lane without knowing it, it can be immediately known through sight and hearing. Therefore, the driver can immediately find his lane again and collide with the car driving in the adjacent lane. This can be prevented in advance.

As described above, when the driving car inadvertently leaves the lane and crosses the existing lane or the center line which does not contain the adjacent magnetic material, a warning sound is generated immediately. It is possible to prevent the occurrence of traffic safety accidents such as collisions and collision accidents, which can prevent human and property damage.

Claims (4)

A pulse oscillator 1 for generating a pulse signal of a predetermined frequency; A light emitting device driver 2 for driving the light emitting device 3 by amplifying a minute signal output from the pulse oscillator 1 to a predetermined level; A light emitting device 3 installed on the rear bottom surface of the front wheel of the vehicle 100 and generating light intermittent at a predetermined frequency toward the road 11; A light receiving element 4 installed on the bottom of the vehicle 100 and receiving the light emitted from the light emitting element 3 when the light is reflected by the center line and the lane 12 of the road 11; A photoelectric conversion unit 5 for converting light incident through the light receiving element 4 into an electrical signal; An amplifier (6) for amplifying the output signal of the photoelectric conversion section (5) to a predetermined level; A synchronization detector (7) for detecting only the lane detection signal by synchronizing the output signal of the amplifier (6) with the output signal of the pulse oscillator (1); A waveform shaping section 8 for shaping the waveform of the lane detection signal output in the distorted state from the synchronization detecting section 7 into a desired waveform; An operation display lamp 13 installed at the front of the driver's seat of the vehicle so as to blink when a predetermined output signal is generated by the waveform shaping unit 8; Lane detection device for a vehicle, characterized in that consisting of an alarm sound generator (9) for generating an alarm sound through the buzzer (10) when a predetermined output signal is generated in the waveform shaping section (8). 2. The lane detection apparatus according to claim 1, wherein the light emitting element (3) and the light receiving element (4) are provided on the rear bottom surfaces of two front wheels of the vehicle (100). 2. The lane detection apparatus according to claim 1, wherein an operation indicator lamp (13) is provided at a rear end of the waveform shaping section (8) to visually display it when the lane (12) is separated. The apparatus of claim 1, wherein a separate power control switch (SW) is installed between each part and the battery to selectively operate by the driver when driving at night, during rain, and on a highway. .