KR20100099574A - Method and apparatus for preventing collision - Google Patents

Abstract

PURPOSE: A method and a device for preventing collision are provided in order that a door does not collide with a second vehicle approaching from the side and the rear of a first vehicle at a high speed or an object around the first vehicle if a passenger opens the door to get off the first vehicle. CONSTITUTION: A device for preventing collision comprises a sensor unit(110), an electronic control unit(120), a warning driving part(130) and a door lock driving part(140). The sensor unit senses the distance to an object around the vehicle and the state of the door. The electronic control unit creates an anti-collision command if the opened door is expected to collide with the adjacent object. The electronic control unit keeps the function of sensing the collision of the opened door and the adjacent object even if the vehicle does not run. The anti-collision command comprises one of a warning lamp lighting command, a warning sound output command and a door lock release preventing command. The warning driving part drives a buzzer(134) and a warning lamp(132) according to the control of the electronic control unit.

Description

Method and Apparatus for Preventing Collision {Method And Apparatus for Preventing Collision}

The present invention relates to a collision avoidance method and apparatus. More specifically, when a passenger in a vehicle opens the door for getting off, a beep output, a warning light is turned on or the door is locked so that the door does not collide with a vehicle approaching at high speed from the rear and rear of the vehicle, or an object around the vehicle. An anti-collision method and apparatus for applying release protection.

In general, a collision warning device of a vehicle is to warn in advance of a collision accident that may occur in a blind spot that the driver's field of view does not reach when driving or changing the driving lane. The collision warning device of such a vehicle detects the presence or absence of a collision possibility using an ultrasonic sensor or an infrared radar.

That is, the conventional crash warning device of the vehicle performed only a function of generating only an alarm by calculating a distance from a nearby obstacle while driving.

On the other hand, when the vehicle is parked, when the passenger in the vehicle opens the door for getting off, there is a low obstacle around the vehicle or an object approaching from the rear and rear of the vehicle, but the passenger does not recognize it and opens the door. If so, there was a risk of an accident.

In order to solve the above problems, the present invention, when a passenger in the vehicle opens the door for getting off, the warning sound so as not to collide with the door or the vehicle surrounding the vehicle at a high speed approach from the rear and rear of the vehicle Its main purpose is to provide an anti-collision method and apparatus for applying output, warning lamp lighting or door unlock protection.

The present invention to achieve the above object, the sensor unit for detecting the door opening and closing state of the vehicle and the distance to the surrounding objects of the vehicle; And an electronic controller configured to generate an anti-collision command when a collision between the opened door and the surrounding object is expected according to the door opening / closing state.

In addition, according to another object of the present invention, the door opening and closing state and the distance receiving distance of the surrounding objects to receive the door opening and closing state of the vehicle and the distance from the surrounding object from the sensor unit; And a collision avoidance command generation step of generating a collision avoidance command when a collision between the open door and the surrounding object is expected according to the door opening and closing state.

As described above, according to the present invention, when a passenger in a vehicle opens the door for getting off, a warning sound is output so that the door does not collide with a vehicle approaching at a high speed from the rear and rear of the vehicle, or an object around the vehicle. It has the effect of applying warning lights or preventing door unlocking.

In addition, according to the present invention, there is an effect that can determine the risk of collision at the time of opening the door even after parking and starting off, and provide a warning to the passenger in case of danger.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

1 is a block diagram schematically showing a collision avoidance apparatus according to the present embodiment.

The collision avoidance device according to the present exemplary embodiment includes a sensor unit 110, an electronic controller 120, an alert driver 130, and a door lock driver 140.

In the present embodiment, the collision avoidance device is described as including only the sensor unit 110, the electronic control unit 120, the warning driver 130 and the door lock device driver 140, but this is the technical idea of the present embodiment It is merely illustrative, and those skilled in the art to which this embodiment belongs may apply various modifications and variations to the components included in the collision avoidance device without departing from the essential characteristics of the embodiment. will be.

The sensor unit 110 performs a function of detecting vehicle information related to a vehicle and surrounding items of the vehicle. The sensor unit 110 also includes a side rearward distance sensor 112, a door distance sensor 114, and a vehicle state sensor 116.

Meanwhile, in the present embodiment, the side rear distance sensor 112, the door distance sensor 114 and the vehicle state sensor 116 are described as including only, but this is merely illustrative of the technical idea of the present embodiment, Those skilled in the art to which the embodiment belongs will be able to variously modify and modify the components included in the sensor unit 110 without departing from the essential characteristics of this embodiment.

The side rear distance sensor 112 is an ultrasonic sensor, and functions to detect a distance from an object approaching the rear and rear of the vehicle, and the door distance sensor 114 is an ultrasonic sensor, It performs the function of detecting the distance.

The vehicle state sensor 116 detects at least one of a door open state and a start on / off state.

The electronic controller 120 receives various signals from the sensor unit 110 and performs a function of identifying a state of the vehicle.

When the electronic controller 120 is expected to collide with the door opened and the surrounding objects detected from the side rear distance sensor 112 and the door distance sensor 114 according to the door opening and closing state detected by the vehicle state sensor 116, Generates a collision avoidance command.

Here, the collision avoidance command may include at least one of a warning light on command, a warning sound output command, and a door unlock prevention command.

On the other hand, to give a specific example of how to anticipate a collision between the door and the vehicle surrounding the collision prevention device, the collision avoidance device from the electronic control unit 120 and the electronic control unit 120 to determine the presence of obstacles An oscillator for generating a resonant frequency signal of about 40 KHz according to an applied driving signal, and a sensor unit 110 for generating a driving signal by receiving an output signal of the oscillator.

The collision avoidance device of the vehicle emits an ultrasonic signal of about 40 KHz according to the driving signal applied from the sensor unit 110, and the side rearward distance sensor 112 and the door distance implemented by an ultrasonic sensor receiving the reflected ultrasonic signal. Sensor 114, a preamplifier for amplifying the ultrasonic signal received by the ultrasonic sensor, a bandpass filter for passing only a signal corresponding to a band of about 40 KHz among the signals amplified by the preamplifier, and the bandpass filter And a detector for detecting the filtered signal.

In addition, the collision avoidance device of the vehicle is a reference voltage generator for generating a reference voltage signal according to the power supply voltage applied from the electronic control unit 120, and the reference voltage signal applied from the reference voltage generator is compared with the output signal of the detector It may include a comparator for applying the result to the electronic control unit 120.

In addition, the collision avoidance apparatus of the vehicle includes a warning driver 130 for driving the buzzer 134 and the warning lamp 132 under the control of the electronic controller 120.

In the vehicle collision avoidance device configured as described above, the electronic control unit 120 drives the ultrasonic sensor by applying a drive signal to the oscillation unit. At this time, the rear and rear distance sensor 112 and the door distance sensor 114 implemented as an ultrasonic sensor emits an ultrasonic signal of about 40 KHz, and the emitted ultrasonic wave signal is received and reflected to the object.

Here, the received signal is applied to the inverting terminal (-) of the comparator via a preamplifier, a band pass filter, and a detector. At this time, the reference voltage signal output from the reference voltage generator is input to the non-inverting terminal (+) of the comparator.

The comparator compares the two input signals and applies a high level or low level signal to the electronic controller 120. When the output signal of the detector is greater than the reference voltage signal, the comparator outputs a low level signal.

When the low level signal is input, the electronic controller 120 drives the sensor unit 110 to generate an ultrasonic signal from the lateral rear distance sensor 112 and the door distance sensor 114 implemented as an ultrasonic sensor. The time difference from the comparator to the time when the low level signal is input is calculated. The electronic controller 120 calculates the distance between the obstacle and the host vehicle based on the time difference calculated as described above, and determines whether the collision is possible.

The electronic controller 120 maintains a function of detecting whether a door that is opened and a vehicle surrounding object collide for a predetermined time even when the vehicle is turned off.

The warning driver 130 receives the collision prevention command from the electronic control unit 120 to turn on or flash the warning light 132 or to control the warning sound to be output through the buzzer 134.

The door lock driving unit 140 receives a collision prevention command from the electronic controller 120 to perform a door unlock prevention.

2 is a flowchart illustrating a collision avoidance method according to the present embodiment.

The collision avoidance device receives a door opening state of the vehicle and a distance from the surrounding object of the vehicle from the sensor unit 110 (S210).

The collision avoidance device is configured to prevent a collision when an anticipated collision between an open door and a side object detected from the rear-rear distance sensor 112 and the door distance sensor 114 is anticipated according to the door open / closed state detected by the vehicle state sensor 116. Generate a command (S220).

Here, the collision avoidance command may include at least one of a warning light on command, a warning sound output command, and a door unlock prevention command.

The anti-collision device turns on a warning light or outputs a warning sound or unlocks the door according to the anti-collision command (S230).

In addition, the collision avoidance device may maintain a function of detecting whether the door opened and the object around the vehicle collide for a predetermined time even when the vehicle is turned off.

In FIG. 2, the collision avoidance apparatus sequentially executes steps S210 to S230. However, this is merely illustrative of the technical idea of the present embodiment, and has a general knowledge in the technical field to which the present embodiment belongs. If it does not deviate from the essential characteristics of the present embodiment, the collision avoidance apparatus may be applied by various modifications and variations by changing the order described in Figure 2 or by executing one or more steps of steps S210 to S230 in parallel. 2 is not limited to the time series order.

As described above, the collision avoidance method according to the present embodiment described in FIG. 2 may be implemented in a program and recorded in a computer-readable recording medium.

The computer-readable recording medium having recorded thereon a program for implementing the collision avoidance method according to the present embodiment includes all kinds of recording devices for storing data that can be read by a computer system.

Examples of such computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and are implemented in the form of a carrier wave (for example, transmission over the Internet). It includes being. The computer readable recording medium may also be distributed over a networked computer system so that computer readable code is stored and executed in a distributed manner.

Also, functional programs, codes, and code segments for implementing the present embodiment may be easily inferred by programmers in the art to which the present embodiment belongs.

3 is an exemplary view according to the present embodiment.

As shown in FIG. 3, the vehicle state sensor 116 is used to check whether one or more of the plurality of doors of the vehicle are opened. As a result of the check, one or more of the plurality of doors of the vehicle are opened, When a collision between the surrounding objects of the vehicle detected by the distance sensor 112 and the door distance sensor 114 is expected, a collision prevention command is generated and transmitted to either the warning driver 130 or the door lock driver 140. .

That is, the vehicle performs one of the functions of warning light lighting, warning sound output, and door unlocking prevention according to the collision prevention command.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, although all of the components may be implemented in one independent hardware, each or all of the components may be selectively combined to perform some or all functions combined in one or a plurality of hardware. It may be implemented as a computer program having a. Codes and code segments constituting the computer program may be easily inferred by those skilled in the art. Such a computer program may be stored in a computer readable storage medium and read and executed by a computer, thereby implementing embodiments of the present invention. The storage medium of the computer program may include a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like.

In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be included, unless otherwise stated, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a block diagram schematically showing an anti-collision device according to an embodiment of the present invention;

2 is a flowchart illustrating a collision avoidance method according to the present embodiment;

3 is an exemplary view according to the present embodiment.

<Description of Symbols for Main Parts of Drawings>

110: sensor unit 120: electronic control unit

130: warning drive unit 140: door lock drive unit

Claims (5)

A sensor unit detecting a door opening state of the vehicle and a distance from an object around the vehicle; And The electronic controller generates a collision prevention command when a collision between the open door and the surrounding object is expected according to the door opening and closing state. Anti-collision device comprising a. The method of claim 1, The electronic control unit, The collision avoidance device of claim 1, wherein the collision detection device maintains a function of detecting whether the open door collides with the surrounding object even when the vehicle is turned off. The method of claim 1, The collision avoidance command, And at least one of a warning light on command, a warning sound output command, and a door unlocking prevention command. The method of claim 1, The sensor unit includes: A side rearward distance sensor for sensing a distance to an object approaching the rear and rear of the vehicle; A door distance sensor configured to detect a distance between the door of the vehicle and an object; And Vehicle condition sensor for detecting at least one of the door open state and the start on / off state Anti-collision device comprising a. Receiving the door opening and closing state of the vehicle and the distance from the surrounding objects of the vehicle from the sensor unit receiving the distance and the distance to the surrounding objects; And A collision avoidance command generation step of generating a collision avoidance command when a collision between the open door and the surrounding object is expected according to the door opening and closing state; Collision prevention method comprising a.

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