KR20030010892A - A warning system for automobile - Google Patents

Abstract

PURPOSE: An object-detecting device is provided to enhance gas efficiency, reducing the weight of a vehicle as well as to decrease malfunctions by embedding fewer wires in vehicle. CONSTITUTION: An object-detecting device includes a main controller(31), sensors(33-1 - 33-N), a warning generator, and a location marker. The sensors are located on the four corners and the central part of the front and rear of the body to detect the presence of obstacles or pedestrians within the distance of 120 cm when the vehicle moves slowly forward or backward. The sensor is composed of sub controllers(34-1 - 34-N) to communicate with the main controller, a sensor actuator(35-1 - 35-N) to transmit laser or supersonic wave toward the advancing direction and receive signals reflected from obstacles or pedestrians managed by the sub controllers, and an amplifier(37-1 - 37-N) to amplify the received signals.

Description

A warning system for automobiles

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a proximity warning device for a vehicle, and more particularly, to a proximity warning device for a vehicle in which a vehicle detects and warns an obstacle in a traveling direction at a low speed for forward and reverse travel.

As the penetration rate of automobiles increases, the number of vehicles operating increases, and accordingly, accidents caused by vehicles increase. Therefore, a device is attached to the vehicle to prevent an accident and a device for minimizing human injury in the event of an accident.

Proximity warning device among the devices to prevent the car accident is transmitted by the ultrasonic wave or laser signal in the driving direction from the front, the side and the rear of the vehicle and receiving the reflection by the obstacle or the person. Detect. Even when the signal is reflected and received, only the signal reflected within a certain distance is recognized, and the signal reflected outside the certain distance is not recognized to determine the presence of an obstacle or a person.

1 is a block diagram of a proximity warning device for a vehicle according to the prior art.

The proximity warning device for a vehicle according to the prior art includes a main controller 11, N (N is a natural number) sensing means 13-1, 13-2. 13-N, warning sound generating means 19 and position display means 21.

Sensing means 13-1 and 13-2. 13-N denotes sensor driving units 15-1 and 15-2. (15-N) and amplifying section (17-1) (17-2). It is composed of (17-N) and located at a predetermined position of the vehicle, for example, four corner portions and the center portion of the front and rear, to determine whether there is an obstacle or a person in the driving direction of the vehicle during low speed driving for forward and backward movement. Detect.

The sensor driver 15-1 or 15-2 in the above. 15-N consists of a transmitter (not shown) and a receiver (not shown). The transmitter transmits an ultrasonic wave or a laser in the traveling direction of the vehicle under the control of the main controller 11 when the vehicle runs at a low speed, and the receiver receives a signal transmitted from the transmitter and reflected by an obstacle or a person. Sensor driving section 15-1, 15-2. 15-N is connected to the main controller 11 by respective wires.

And amplifying sections 17-1 and 17-2. 17-N amplifies the signal received by the receiver and inputs it to the main controller 11. Amplification section 17-1, 17-2. 17-N is also connected to the main controller 11 by respective wirings.

The main controller 11 has amplification units 17-1, 17-2,... Detect the signal input from (17-N) and measure the distance from obstacle or person. In other words, the main controller 11 includes sensor driving units 15-1, 15-2,. Measure the separation distance from the obstacle or person by the difference in the time of the ultrasound or laser transmission at the transmitter and the time received at the receiver at 15-N.

In the above, the main controller 11 recognizes that there is an obstacle or a person when the distance between the obstacle or the person is smaller than the first distance, for example, 120 cm, and recognizes that there is no larger than the first distance.

The warning sound generating means 19 is made of a buzzer or the like and driven by the control of the main controller 11. That is, when the main controller 11 recognizes that the first distance from the obstacle or the person is separated, a warning sound is generated to cause the driver to be alert. However, when the main controller 11 does not recognize that the distance between the obstacle or the person is greater than the first distance, the warning sound generating means 19 is not driven and thus does not generate a warning sound.

The warning sound generating means 19 generates a warning sound whenever the distance between the obstacle or the person becomes the second and third distances smaller than the first distance, for example, 80 cm and 40 cm.

The position display means 21 is provided with sensing means 13-1 and 13-2. The warning sound generating means 19 is formed of a lighting display unit indicating the respective positions of the 13-N, and when the warning sound generating means 19 generates a warning sound, it corresponds to an obstacle or part close to a person of the vehicle and lights to display. In the above-described position display means 21, only two or more places of the vehicle which are closest to the portion closest to each other by the control of the main controller 11 even when the first, second or third distance from the obstacle or the person is separated. To display.

As described above, the proximity warning device for a vehicle according to the related art is that each transmitter constituting a plurality of sensor drivers sends an ultrasonic wave or a laser under the control of the main controller when the vehicle is traveling at a low speed, and each receiver receives an obstacle or a person. After receiving the signal reflected by the amplified signal received from a plurality of amplification unit and inputs to the main controller.

Then, the main controller measures the separation distance from the obstacle or the person by the time difference between the transmission of the ultrasonic wave or laser at the transmitter and the reception at the receiver, and if the separation distance is less than the first distance, for example, 120 cm The generating means generates a warning sound and the position display means lights up and displays a part corresponding to an obstacle or a part of the vehicle having a smaller distance than the first distance so that the driver can recognize and prevent the occurrence of an accident.

However, the proximity warning device for a vehicle according to the prior art has a main controller is connected to the N sensor driver and the respective wiring control and connected to the N amplifier and each wiring to receive a signal, so 2N wiring is required In addition to the increase in the weight of the fuel economy is not only lowered, there is a problem that the malfunction due to the noise (noise) between the wiring or the performance degradation is reduced.

Accordingly, an object of the present invention is to provide a proximity warning device for automobiles that can improve fuel efficiency by reducing vehicle weight by reducing the number of wires.

Another object of the present invention is to provide a proximity warning device for an automobile that can reduce noise between wirings and prevent malfunction and performance degradation.

Proximity warning device for a vehicle according to the present invention for achieving the above objects is located in a position including a four corner portion, the center portion of the front and rear and is driven during the low-speed driving of the car to the obstacle or person within the first distance of the traveling direction N detection means for generating each warning signal only when it is determined whether or not there is, the warning sound generating means for generating a warning sound by the warning signal, and the position of the N detection means, Position display means for detecting and displaying the closest portion to the obstacle or the person, and the LIN communication method using the one wire at the same time to detect the vehicle at low speed and the N detection means to receive the warning signal, the warning The warning sound generating means controls the warning sound to be generated by a signal; Comprising a main controller for comparing the warning signal to control the display so that the position display means corresponding to the obstacle or the portion close to the person.

The sensing means may include a sensor driver for transmitting a signal in a driving direction of the vehicle during low speed driving of the vehicle and receiving a signal reflected by the obstacle or person, an amplifier for amplifying the signal received by the sensor driver, and It is preferable to have a sub-controller controlled by the main controller by the LIN communication method using one wire to recognize a time difference between the transmitted signal and the received signal and to measure a distance between the obstacle or the person.

In the above, the sensor driver preferably transmits and receives an ultrasonic wave or a laser.

In the above, it is preferable that the sub controller generates each warning signal whenever the second and third predetermined distances smaller than the first predetermined distance are reached.

Preferably, the warning sound generating means generates a warning sound by each of the warning signals.

In the above, the position display means is formed by a light display unit, it is preferable that the display corresponding to the part corresponding to the obstacle or the person of the vehicle is lit.

1 is a block diagram of a proximity warning device for a vehicle according to the prior art.

2 is a block diagram of a proximity warning device for a vehicle according to the present invention.

Explanation of symbols on the main parts of the drawings

31: main controllers 33-1, 33-2,... , 33-N: Detection means

34-1, 34-2,... , 34-N: Sub controller

35-1, 35-2,... , 35-N: Sensor drive part

37-1, 37-2,... , 37-N: Amplifier

39: warning sound generating means 41: position display means

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

2 is a block diagram of a proximity warning device for a vehicle according to the present invention.

Proximity warning device for a vehicle according to the present invention is the main controller 31, N sensing means (33-1) (33-2). (33-N), warning sound generating means 39 and position display means (41).

Detecting means (33-1) (33-2); 33-N is located at a predetermined position of the vehicle, for example, four corner portions, and a center portion of the front and the rear, and is a first distance in the driving direction of the vehicle during low-speed driving for forward and backward, for example The presence of any obstacle or person within 120 cm shall be determined.

Detecting means (33-1) (33-2); 33-N denotes N sub-controllers 34-1 and 34-2 that transmit and receive to and from the main controller 31 in a LIN communication method using one wire. (34-N) and N sub-controllers 34-1 and 34-2. N sensor drivers 35-1 and 35-2 controlled by 34-N to transmit ultrasonic waves or lasers in the direction of travel of the vehicle and receive signals reflected from obstacles or people. (35-N) and N amplifying units (37-1) (37-2) for amplifying the received signal. (37-N).

Sub-controllers 34-1 and 34-2 above. 34-N denotes sensor drive units 35-1 and 35-2 by the control of the main controller 31 when the vehicle is traveling at a low speed for moving forward and backward. Drive (35-N).

Sub controllers 34-1 and 34-2. 34-N denotes an amplifying section 37-1, 37-2. The received signal input through (37-N) is sensed to measure the separation distance from the obstacle or person. That is, the sub controllers 34-1 and 34-2. 34-N denotes sensor driving units 35-1 and 35-2. It can be measured by calculating the separation distance from an obstacle or a person by the time difference of the transmission and reception of the ultrasonic wave or laser of (35-N).

Sensor driving units 35-1 and 35-2; 35-N consists of a transmitter (not shown) and a receiver (not shown). The transmitter is provided with sub-controllers 34-1 and 34-2 when the vehicle runs at low speeds for forward and reverse travel. Ultrasonic waves or lasers are sent in the direction of travel of the vehicle under the control of 34-N. Then, the receiver receives a signal transmitted from the transmitter and reflected by an obstacle or a person located in the direction of travel of the vehicle.

Amplifying section 37-1, 37-2. 37-N amplifies the signal received at the receiver, so that each sub-controller 34-1, 34-2,... (34-N).

In the above, each of the sub controllers 34-1 and 34-2. The 34-N generates a warning signal by recognizing that an obstacle or a person is less than the first distance and generating a warning signal when the measured distance from the obstacle or person is smaller than the first distance. Do not.

Sub controllers 34-1 and 34-2. 34-N generates a warning signal each time the distance between the obstacle or the person becomes smaller to become the second and third distances, for example, 80 cm and 40 cm.

The main controller 31 includes the sub controllers 34-1 and 34-2. The warning signal generated at 34-N is simultaneously input by a local interconnect network (LIN) communication method using one wire to control the operation of the warning sound generating means 39 and the position display means 41. In the above description, the main controller 31 has sub-controllers 34-1, 34-2, ... even if two or more places of the vehicle are separated from the obstacle or the person by less than the first, second, or third distance. The warning signal input from 34-N is compared to detect the nearest part.

The warning sound generating means 39 is composed of a buzzer or the like, and the sub-controllers 34-1, 34-2,. When a warning signal is generated at any one of the 34-Ns, a warning sound is generated by the control of the main controller 31. Therefore, the warning sound generating means 39 generates a warning sound whenever the distance between the obstacle or the person becomes the first distance as well as the second and third distances, for example, 80 cm and 40 cm, respectively. .

The position display means 41 is provided with sensing means 33-1 and 33-2. It is formed of a lighting display unit indicating the respective positions of (33-N). If the warning sound generating means 39 generates a warning sound under the control of the main controller 31, it corresponds to an obstacle or a part of the vehicle close to the person. Lights up and displays. Wherein the position display means 41 is located at a portion detected that the two or more of the vehicle is closest to the control or the control of the main controller 31 even if the distance smaller than the first, second or third distance from the obstacle or person. Only the relevant ones will be displayed.

The operation of the proximity warning device for automobiles having the above-described configuration will be described.

N sub-controllers 34-1 and 34-2 by the control of the main controller 31 when the vehicle is traveling at a low speed for moving forward and backward. The sub-controllers 34-1 and 34-2. N sensor driving units 35-1 and 35-2 by 34-N. Drive (35-N) simultaneously. Namely, the sensor driving units 35-1 and 35-2. 35-N denotes the sub-controllers 34-1 and 34-2 controlled by the main controller 31 during the low speed driving of the vehicle. (34-N) allows each transmitter to be time-regulated and to send ultrasound or lasers in the direction of travel of the vehicle, with each receiver being emitted by the transmitter and reflected by an obstacle or person located in the direction of travel of the vehicle. Receive the signal.

Then, the N signals amplified by the receivers 37-1 and 37-2 are received. Amplified by (37-N), and the N subcontrollers 34-1 and 34-2. Measure the separation distance from the obstacle or person by the signal amplified at 34-N. In other words, the N sub-controllers 34-1 and 34-2. 34-N denotes sensor driving units 35-1 and 35-2. Each transmitter of (35-N) transmits an ultrasonic or laser with time regularity and senses the difference in time as it is received at each receiver to measure the distance from the obstacle or person.

And each of the sub controllers 34-1 and 34-2. 34-N indicates that an obstacle or a person is less than the first distance, for example, 120 cm, and generates a warning signal if the measured distance or distance from the person is less than the first distance. Recognize and do not generate a warning signal.

At this time, the sub-controllers 34-1 and 34-2. 34-N also generates a warning signal whenever the distance from the obstacle or person becomes smaller to become the second and third distances, for example, 80 cm and 40 cm.

Thus, the main controller 31 is connected to the sub controllers 34-1 and 34-2. The warning signal generated from 34-N is input to operate the warning sound generating means 39 to generate a warning sound, and to operate the position display means 41 to display a portion close to an obstacle or a person of the car to warn the driver. do. At this time, even if two or more places of the vehicle are smaller than the obstacle or the person and the distance smaller than the first, second, or third distance is separated, the main controller 31 provides the sub-controllers 34-1, 34-2. Comparing two or more warning signals simultaneously inputted at 34-N, the closest part is detected to display only the corresponding part of the position display means 41.

As described above, the proximity warning device for automobiles according to the present invention controls the N sub-controllers by the LIN communication method in which the main controller uses one wire when the vehicle runs at low speed for moving forward and backward. The N sensor drivers transmit ultrasonic waves or lasers with time regularity and receive the reflected signals, so that the N sub-controllers measure the separation distance from the obstacle or the person. Then, a warning signal for recognizing that there is an obstacle or a person is generated only when the distance between the obstacle or the person of the N sub-controllers is smaller than the first distance, for example, 120 cm, thereby generating N sub-controllers. The alarm sound generating means generates a warning sound by the main controller connected by a LIN communication method using a single wiring and the position indicating means warns the driver by displaying a portion near the obstacle or the person of the vehicle.

Therefore, in the present invention, the main controller can simultaneously perform transmission and reception by using a LIN communication method using N sensing means and one wire, thereby reducing the number of wires, thereby reducing fuel weight and improving fuel economy. There is an advantage in that noise can be reduced to prevent malfunction and performance degradation.

Claims (6)

N, which is located at the position including the four corner parts and the center part of the front and the rear, is driven when the vehicle is traveling at a low speed, and generates each warning signal only when the presence or absence of an obstacle or a person is determined within the first distance of the driving direction. Detection means, Warning sound generating means for generating a warning sound by the warning signal; Position display means for indicating the positions of the N detection means and detecting and displaying a portion of each warning signal closest to the obstacle or the person; The vehicle detects the vehicle at low speed and controls the LIN (Local Interconnect Network) communication method using one wire simultaneously with the N sensing means and receives the warning signal, wherein the warning sound generating means generates the warning sound by the warning signal. Proximity warning device for a vehicle having a main controller for controlling to display the position display means corresponding to the portion in close proximity to the obstacle or person while controlling to compare each warning signal. The method according to claim 1, The sensing means, A sensor driver which transmits a signal in a direction in which the vehicle travels at a low speed and receives a signal reflected by the obstacle or a person; An amplifier for amplifying the signal received from the sensor driver; Proximity warning for a vehicle having a sub-controller controlled by the main controller by a LIN communication method using one wire to recognize a time difference between the transmitted signal and the received signal and to measure a distance between the obstacle or a person. Device. The proximity warning device of claim 2, wherein the sensor driver transmits and receives an ultrasonic wave or a laser. The proximity warning device of claim 1, wherein the sub-controller generates a warning signal each time the second and third distances are smaller than the first distance. The proximity warning device for automobile according to claim 4, wherein the warning sound generating means generates a warning sound by each warning signal. The proximity warning device for a vehicle according to claim 1, wherein the position display means is formed of a lighting display unit to display a position corresponding to the obstacle or the person in close proximity to the vehicle.