KR20210056158A - Forward and Rear Safety Apparatus For Vehicle - Google Patents

Abstract

Provided is a safety device for forward and backward collision warning for a vehicle. The safety device for forward and backward collision warning for a vehicle is a safety device mounted on a vehicle where a front wheel and a rear wheel are disposed respectively at the front side and the rear side, which comprises: an obstacle detection unit mounted on the front side or the rear side of the vehicle to detect an obstacle which comes closer or goes farther within a predetermined distance and transmit the detected data to a control unit; an image output unit mounted on one side of the vehicle to output the data received from the control unit as an image signal to a driver; a sound output unit mounted on one side of the vehicle to output the data received from the control unit as a sound signal to a driver; and a control unit for calculating a distance from the obstacle in real time, based on the data received from the obstacle detection unit, estimating chance of collision with the obstacle, based on the calculated data, and transmitting a warning signal to the image output unit and the sound output unit when the chance of collision exceeds a predetermined reference value. According to the present invention, the chance of collision with an obstacle is estimated to give a warning to a driver and a blind spot in driving can be eliminated to prevent an accident.

Description

Forward and Rear Safety Apparatus For Vehicle

The present invention relates to a stabilization device for front and rear directions for a vehicle, and more particularly, for a vehicle that predicts the possibility of collision with an obstacle and warns the occupant, and eliminates the blind spot during riding, thereby preventing the occurrence of a safety accident in advance. It is about the safety device of the front and rear attention.

Recently, due to the establishment and activation of bicycle infrastructure, the number of bicycles has increased year by year, and as of 2014, approximately 10 million people are using bicycles, which is gaining explosive popularity, but accidents caused by bicycles steadily increase in proportion to the increase of users. It is a situation.

In general, as a means to reduce accidents caused by vehicles, a lot of research and use of means to secure safety from surrounding dangerous situations are being studied and used. However, in the case of bicycles, these studies are not much compared to vehicles, and mainly rear detection. Simple products are being developed that alert the driver through the device.

Bicycles are frequently subject to fall and collision accidents due to a road environment that is worse than automobiles, and there is almost no occupant protection device, so there is a need for a way to secure more safety.

Korean Patent Publication No. 10-2019-0116237 (published on October 14, 2019)

An object of the present invention is to predict the possibility of collision with an obstacle, to warn the occupant, and to provide a safety device for the front and rear of the vehicle that can block the occurrence of a safety accident in advance by eliminating the blind spot during riding.

A safety device for a front and rear pole according to an aspect of the present invention for achieving this object is a safety device for a front and rear pole mounted on a vehicle equipped with front and rear wheels, respectively, at the front and the rear, and is mounted on the front or rear of the vehicle, An obstacle detection unit for detecting an obstacle approaching or moving away from within a predetermined distance and transmitting the detected data to the control unit; An image output unit mounted on one side of the vehicle and outputting the data received from the control unit as an image signal to the occupant; A sound output unit mounted on one side of the vehicle and outputting the data received from the control unit as a sound signal to the occupant; And calculating the distance to the obstacle in real time based on the data received from the obstacle detection unit, predicting the probability of collision with the obstacle based on the calculated data, and when the probability of collision exceeds a preset reference value, the image output unit and It may be a configuration including a; control unit for transmitting a warning signal to the sound output unit.

In one embodiment of the present invention, the obstacle detection unit may be mounted adjacent to the front wheel of the vehicle.

In one embodiment of the present invention, the obstacle detection unit may be mounted adjacent to the front wheel and the rear wheel of the vehicle, respectively, or may be mounted adjacent to the front wheel, side and rear wheels of the vehicle.

In an embodiment of the present invention, the obstacle detection unit may be mounted and fixed so as to change the position according to the intention of the occupant.

In one embodiment of the present invention, the obstacle detection unit may be an infrared sensor, an ultrasonic sensor, or an image information detection device.

In one embodiment of the present invention, the obstacle detection unit detects in real time a distance between an obstacle contacting or moving away from the vehicle front, side and rear, and transmits the detected data to the control unit, the control unit from the obstacle detection unit. Calculates the speed value of the vehicle based on the received data, calculates the collision time with the obstacle based on the acquired speed value and distance data with the obstacle, and outputs the image when the calculated collision time value is less than a preset value. A warning signal can be transmitted to the sound output unit and the sound output unit.

At this time, if the collision time value calculated by the control unit exceeds a preset value, it is determined that the collision probability has exceeded a preset reference value, and if the collision time value calculated by the inter-control unit is less than a preset value, the collision probability It can be determined that this is less than the preset reference value.

In an embodiment of the present invention, the image output unit and the sound output unit may be mounted and fixed to be able to change positions according to the intention of the occupant.

In one embodiment of the present invention, the obstacle detection unit, the image output unit, the sound output unit, and the control unit are equipped with a wireless communication module therein, and the obstacle detection unit, the image output unit, and the sound output unit are installed in each of the wireless communication module. The communication module may be used to receive a control signal from the controller or transmit the detected data to the controller.

In one embodiment of the present invention, the control unit mounts a wireless communication module therein, and the control unit performs wireless communication with the passenger's portable equipment using the wireless communication module, and carries the vehicle operation information to the passenger's portability. You can send it to the equipment.

In this case, the wireless communication module may use a local area network, Wi-Fi, or Bluetooth.

As described above, according to the stabilization device of the front and rear columns of the present invention, by providing an obstacle detection unit, an image output unit, a sound output unit, and a control unit that perform a specific role, it predicts the possibility of collision with an obstacle and warns the occupant, By eliminating blind spots while riding, it is possible to provide a safety device for the front and rear of the vehicle that can block the occurrence of safety accidents in advance.

1 is a block diagram showing a stabilization device of the front and rear columns according to an embodiment of the present invention.
2 is a schematic diagram showing a state of detecting front and rear bowel objects using the safety device of the front and rear poles according to an embodiment of the present invention.
3 is a flow chart showing a control method of a control unit of the front and rear safety device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, terms or words used in the specification and claims should not be interpreted as being limited to a conventional or dictionary meaning, but should be interpreted as meanings and concepts consistent with the technical idea of the present invention.

Throughout this specification, when a member is said to be positioned "on" another member, this includes not only the case where a member is in contact with the other member, but also the case where another member exists between the two members. Throughout the present specification, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

FIG. 1 is a block diagram showing a stabilizing device for the front and rear poles according to an embodiment of the present invention, and FIG. 2 is a block diagram of the front and rear poles using the safety device for the front and rear poles according to an embodiment of the present invention. A schematic diagram is shown, and FIG. 3 is a flow chart showing a control method of the control unit of the front and rear safety device according to an embodiment of the present invention.

Referring to these drawings, the front and rear safety device 100 according to the present embodiment is mounted on a vehicle equipped with front and rear wheels, respectively, at the front and rear, and an obstacle detection unit 110 that performs a specific role, and an image output. It may be a configuration including the unit 120, the sound output unit 130, and the control unit 140.

Specifically, the obstacle detection unit 110 is mounted in the front or rear of the vehicle, detects an obstacle approaching or moving away from within a predetermined distance, and transmits the detected data to the control unit 140.

At this time, the obstacle detection unit 110 according to the present embodiment is preferably mounted adjacent to the front wheel of the vehicle. In addition, the obstacle detection unit 110 may be mounted adjacent to the front and rear wheels of the vehicle, respectively, or may be mounted adjacent to the front, side, and rear wheels of the vehicle, respectively.

In some cases, the obstacle detection unit 110 may be mounted and fixed so that the position can be changed according to the intention of the occupant.

The obstacle detection unit 110 according to the present embodiment mentioned above is not particularly limited as long as it can detect the distance to the obstacle by using infrared, ultrasonic or imaging, and preferably, an infrared sensor, an ultrasonic sensor, or an image It may be a device including an information detection device.

An infrared sensor is a device that detects a physical quantity or a stoichiometric quantity such as temperature, pressure, and intensity of radiation by using infrared rays and converts it into an electric quantity capable of signal processing. There is one that detects that a machine is being blocked by emitting infrared light, and one that detects the surrounding infrared light. It is used for crime prevention or fire detection.

The above-mentioned infrared sensor is composed of a light-emitting unit and a light-receiving unit. The amount of voltage applied to the light-receiving part changes according to how much infrared rays from the light-emitting part are reflected on the object and the amount of the light-receiving part enters the light-receiving part. For example, when infrared rays are transmitted to white and black from the light-emitting unit, the voltage increases to the light-receiving unit when the light-receiving unit is white with a large amount of reflection. At this time, the work is performed using the obtained voltage value.

The method of using the infrared sensor can be divided into two.

First, using a comparator, the output voltage according to the light entering the light-receiving unit is higher than the reference voltage, and the lower one is LOW. Because this method is useful for detecting white and black, it is widely used in line tracers.

The second is a method of converting an analog value into a digital value through the ADC of a microcontroller by converting the output voltage according to the light entering the light receiving unit. Unlike the previous comparator, since the amount of infrared rays reflected is subdivided, the value is widely used for distance detection of the mouse.

As an infrared sensor that can be preferably utilized, EL-8L and ST-8L can be mentioned.

Specifically, the EL-8L is a light emitting part of an infrared sensor, and can be utilized by connecting the long leg of the element to the anode and the short leg to the cathode.

The ST-8L is a light receiving part of an infrared sensor and has a structure similar to that of an NPN type transistor, and does not have a base (B) terminal, and the received light serves as a driving source of the base. Depending on the amount of light received, it converts the passing current of the device according to the amount of light received. Because of this, the amount of current flowing between the collector and the emitter changes. This change in the amount of current is converted into a voltage by connecting a resistor, and this voltage is used to determine whether the light has come in or not. do. In this element, the short lead wire is the collector (+), and the long lead is the emitter (-).

Next, the ultrasonic sensor is used for measuring the presence, absence, distance, speed, etc. of an object or person at a close distance using ultrasonic waves.

Specifically, the ultrasonic sensor is composed of two piezoelectric elements (or one piezoelectric element and a metal plate), bi-mol one composed of two piezoelectric elements, and unimol one composed of one piezoelectric element. It is called. When ultrasonic waves are incident on this, the piezoelectric element vibrates to generate a voltage. Conversely, when a voltage is applied to the piezoelectric element, ultrasonic waves are generated. The ultrasonic sensor can generate more efficient ultrasonic waves by applying an AC voltage of the same frequency as the natural vibration frequency of the sensor itself. Therefore, it is possible to measure the distance by processing the generated voltage by inputting (vibrating) the ultrasonic wave reflected from the object directly to the sensor in the circuit.

Meanwhile, the image output unit 120 is mounted on one side of the vehicle and may output data received from the control unit 140 as an image signal to the occupant.

The image output unit 120 is not particularly limited as long as it can output an image signal that can be checked with the naked eye of the occupant, and may preferably be a configuration including a display device. In some cases, a device capable of sensing the touch of the occupant is added to the image output unit 120, and after receiving a specific input signal from the occupant and storing it in the control unit 140, the control of the front and rear stabilization device 100 is performed. Can be utilized. Specifically, in determining the possibility of collision, the range of the reference value or the reference value may be specified or changed.

The sound output unit 130 is mounted on one side of the vehicle and may output data received from the control unit 140 as a sound signal to the occupant.

The sound output unit 130 is not particularly limited as long as it can output sound that can be confirmed by the passenger's hearing, and may preferably be a buzzer or a speaker. In the case of a buzzer, a simple buzzer sound can be reproduced. In this case, the buzzer sound may be reproduced by varying the pitch and reproduction length, and in some cases, various buzzer sounds may be combined and reproduced. For example, by varying the playing length and diversifying the pitch, such as Morse hatching, the occupants can more easily recognize the sound.

The control unit 140 calculates the distance to the obstacle in real time based on the data received from the obstacle detection unit 110, predicts the probability of collision with the obstacle based on the calculated data, and calculates the probability of collision with a preset reference value. If exceeded, a warning signal may be transmitted to the image output unit 120 and the sound output unit 130.

In some cases, the obstacle detection unit 110 may detect in real time a distance between an obstacle contacting or moving away from the vehicle in front, side and rear, and transmit the detected data to the controller 140. At this time, the control unit 140 calculates the speed value of the vehicle based on the data received from the obstacle detection unit 110, calculates the collision time with the obstacle based on the acquired speed value and distance data between the obstacle, and calculates When the generated collision time value is less than a preset value, a warning generation signal may be transmitted to the image output unit 120 and the sound output unit 130.

In addition, when the collision time value calculated by the control unit 140 exceeds a preset value, it is determined that the possibility of collision has exceeded a preset reference value, and the collision time value calculated by the control unit 140 is a preset value. If it is less than or equal to, it may be determined that the possibility of collision is less than or equal to a preset reference value.

Since the control unit 140 has a storage device therein, it is preferable to store data in real time according to time, calculate and process the stored data in real time to obtain an attendance time value.

As shown in FIG. 3, when the collision time value calculated by the control unit 140 exceeds a preset value, a warning is output using the image output unit 120 and the sound output unit 130.

In some cases, the front and rear safety device 100 according to the present embodiment may further include a vibration generating device.

The vibration generating device according to the present embodiment is a configuration operated by the control unit 140, and when the collision time value calculated by the control unit 140 exceeds a preset value, a warning is output using the vibration generating device. do. In this case, the vibration that can be generated may be generated by various combinations of vibration frequency, vibration intensity, and vibration reproduction length.

For example, when there is a possibility of a collision, the intensity of the vibration and the vibration frequency can be significantly increased so that the occupant can sense the danger by tactile sense.

In addition, by hapticizing the kind of vibration generated, the occupant's awareness can be remarkably improved.

Specifically, the word haptic is derived from the ancient Greek word (Haptesthai), which means'to touch, to hold' etymologically, and generally means a tactile sensation. Recently, the word haptic has become familiar to the public by providing a simple vibration function in mobile phones and the like. Essentially, touch or tactile sensation, unlike other sensations, is a sensation that is felt when an object physically contacts the skin, and is classified into texture and inverse sensation according to the transmission path of information detected at the time of contact. When an object and the skin come into contact, various information about the surface characteristics of the object such as roughness, pattern, or temperature of the object surface is transmitted through the skin, and the sensation transmitted through the skin is defined as texture in the field of haptic research. do. In contrast, the feeling transmitted by stimulating muscle sensations such as muscles or tendons was defined as kinesthetic. The field of haptic research developed from robotics has basically tried to develop a haptic interface that can deliver two senses to users, texture and force. From the mid- to late 1990s, studies related to force for teleoperation, medical simulators, rehabilitation systems, and virtual reality have become mainstream, but in recent years, due to the advent of haptic-applied smartphones, iPhones, tablet PCs, etc., mobile As the device market rapidly grows, studies on the touch that can be felt in the hand are being newly studied.

Professor Blake Hannaford, co-director of the BioRobotics Lab at the University of Washington, defined the haptic interface as ``a mechatronic system that makes people feel as if they are experiencing a virtual space or a remote control environment directly.'' have

That is, a haptic interface is a device that delivers tactile stimuli to a user so that they can feel as if there is a virtual object. The haptic interface consists of a haptic device, a haptic controller, a haptic rendering, and a target object in a virtual environment. A haptic device is a device used by a user to control a target object in a virtual environment, and is a mechanical device that transmits a user command to the target object and transmits the result of a physical motion of the target object to the user by tactile sensation. The haptic device is controlled by a haptic controller to stably transmit a required force to the user when the user uses the haptic device. The haptic rendering engine is an engine that calculates a physical response (force) of an object according to a user's behavior when interacting with an object in a virtual environment and generates a reaction force. That is, the haptic device detects the user's behavior (input), and the haptic rendering engine calculates the user's behavior and the resulting physical characteristics or reactions of the virtual object. The haptic controller controls the size and direction of the output of the haptic device according to the calculation result of the rendering engine and transmits it back to the user. Therefore, the response speed of the haptic device is fast, it is possible to output sufficient force, and as the performance of the haptic rendering engine is advanced so that it can be precisely controlled, the user feels an object in a virtual environment or an object in a remote location more realistically.

Meanwhile, the image output unit 120 and the sound output unit 130 mentioned above may be mounted and fixed to be able to change their position according to the intention of the occupant.

In some cases, the image output unit 120 and the sound output unit 130 may be attached to a helmet or safety equipment worn by the occupant and utilized.

More preferably, the obstacle detection unit 110, the image output unit 120, the sound output unit 130, and the control unit 140 may mount a wireless communication module therein.

At this time, the obstacle detection unit 110, the image output unit 120, and the sound output unit 130 receive a control signal from the control unit 140 or control the detected data using a wireless communication module mounted therein. 140).

In some cases, the control unit 140 may perform wireless communication with the passenger's portable equipment using the wireless communication module and transmit operation information of the vehicle to the passenger's portable equipment. In this case, the wireless communication module that can be used may be a local area network, Wi-Fi, or Bluetooth.

As described above, according to the stabilization device of the front and rear columns of the present invention, the obstacle detection unit 110, the image output unit 120, the sound output unit 130, and the control unit 140 are provided to perform a specific role. It is possible to provide a safety device 100 for front and rear attention for a vehicle capable of preventing the occurrence of a safety accident in advance by predicting the possibility of collision with the vehicle and warning the occupant, and eliminating the blind spot during riding.

In the above detailed description of the present invention, only special embodiments according thereto have been described. However, it should be understood that the present invention is not limited to the specific form mentioned in the detailed description, and rather, it is understood to include all modifications, equivalents, and substitutes within the spirit and scope of the present invention as defined by the appended claims. It should be.

That is, the present invention is not limited to the specific embodiments and description described above, and any person with ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can perform various modifications. It is possible, and such modifications will fall within the protection scope of the present invention.

10: vehicle
21: obstacle ahead
22: rear obstacle
100: front and rear safety device
110: obstacle detection unit
111: front detection unit
112: side detection unit
113: rear detection unit
120: image output unit
130: sound output unit
140: control unit

Claims (11)

As a front and rear safety device 100 mounted on a vehicle equipped with front and rear wheels, respectively, at the front and rear,
An obstacle detection unit 110 mounted on the front or rear of the vehicle, detecting an obstacle approaching or moving away from within a predetermined distance, and transmitting the detected data to the control unit 140;
An image output unit 120 mounted on one side of the vehicle and outputting the data received from the control unit 140 as an image signal to the occupant;
A sound output unit 130 mounted on one side of the vehicle and outputting the data received from the control unit 140 as a sound signal to the occupant; And
Calculates the distance to the obstacle in real time based on the data received from the obstacle detection unit 110, predicts the probability of collision with the obstacle based on the calculated data, and outputs an image when the probability of collision exceeds a preset reference value. A control unit 140 for transmitting a warning generation signal to the unit 120 and the sound output unit 130;
Front and rear safety device comprising a.
The method of claim 1,
The obstacle detection unit 110 is a safety device of the front and rear circumference, characterized in that it is mounted adjacent to the front wheel of the vehicle.
The method of claim 1,
The obstacle detection unit 110 is a safety device for front and rear circumferences, characterized in that they are respectively mounted adjacent to the front and rear wheels of the vehicle or adjacent to the front, side and rear wheels of the vehicle.
The method of claim 1,
The obstacle detection unit 110 is a safety device of the front and rear sides, characterized in that it is mounted and fixed to be able to change the position according to the intention of the occupant.
The method of claim 1,
The obstacle detection unit 110 is an infrared sensor, an ultrasonic sensor or an image information detection device, characterized in that the front and rear safety device.
The method of claim 1,
The obstacle detection unit 110 detects in real time a distance to an obstacle contacting or moving away from the vehicle in front, side and rear, and transmits the detected data to the controller 140,
The control unit 140 calculates a speed value of the vehicle based on data received from the obstacle detection unit 110, calculates a collision time with an obstacle based on the obtained speed value and distance data between the obstacle, and the calculated When the collision time value is less than the preset value, the front and rear attention safety device, characterized in that transmitting a warning signal to the image output unit 120 and the sound output unit 130.
The method of claim 6,
When the collision time value calculated by the control unit 140 exceeds a preset value, it is determined that the probability of collision has exceeded a preset reference value,
When the collision time value calculated by the control unit 140 is less than or equal to a preset value, it is determined that the possibility of collision is less than or equal to a preset reference value.
The method of claim 1,
The image output unit 120 and the sound output unit 130, the front and rear safety device, characterized in that it is mounted and fixed to be able to change the position according to the intention of the occupant.
The method of claim 1,
The obstacle detection unit 110, the image output unit 120, the sound output unit 130, and the control unit 140 have a wireless communication module mounted therein,
The obstacle detection unit 110, the image output unit 120, and the sound output unit 130 receive a control signal from the control unit 140 or receive the detected data using a wireless communication module mounted therein. ) A safety device of front and rear attention, characterized in that transmitting to.
The method of claim 1,
The control unit 140 mounts a wireless communication module therein,
The control unit 140 performs wireless communication with the passenger's portable equipment using a wireless communication module, and transmits operation information of the vehicle to the passenger's portable equipment.
The method of claim 10,
The wireless communication module is a front and rear safety device, characterized in that using a local area network, Wi-Fi or Bluetooth.

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