KR101895187B1 - Apparatus and method for outputting warning sound using super-directional speaker - Google Patents

Abstract

The present invention relates to an apparatus and a method for outputting a beep sound using a supergain speaker, and more particularly, to an apparatus and a method for outputting a beep sound signal stably output to a distant area by synthesizing an alarm sound signal of an audible frequency band and an ultrasonic signal of an ultrasonic frequency band. And an apparatus and method for outputting a warning sound using the super-directional speaker

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus and a method for outputting a beep sound using a supergain speaker,

The present invention relates to an apparatus and a method for outputting a beep sound using a supergain speaker, and more particularly, to a beep sound output apparatus and a method for outputting a beep signal by synthesizing a beep signal of an audible frequency band and an ultrasound signal of an ultrasonic frequency band. And more particularly, to an apparatus and method for outputting a beep sound using a super directional speaker capable of stably outputting a beep sound to a distant area.

Generally, when a vehicle breaks down or another vehicle accident occurs in a space where vehicles run at high speed, such as a highway, a safety tripod is installed in the rear of the vehicle to prevent a secondary accident caused by a vehicle approaching from the rear .

However, in the conventional method of installing a safety tripod, the safety tripod is required to be installed 100m behind the vehicle in the daytime and 200m behind the car in the case that it is difficult to drive due to malfunction, accident, , It is impossible to install the vehicle in a situation where it is difficult for the driver to leave the vehicle due to an accident or breakdown of the vehicle, and it is difficult to prevent a secondary accident from occurring during installation or installation of the safety tripod. In addition, the brightness and size of the safety tripod deteriorate the visibility and can be caused by the vehicle running in the wind or a side lane.

In order to solve the problems of the conventional second prevention method using a safety tripod, the present inventor has proposed a method for preventing a secondary trip prevention using a safety tripod by combining a beep signal of an audible frequency band and an ultrasound signal of an ultrasonic frequency band, Outputting a warning sound signal to a further distant area, thereby outputting a warning sound output apparatus and method using a super directional speaker.

Korean Patent No. 10-1643249

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide an ultrasonic diagnostic apparatus and an ultrasonic diagnostic apparatus, which combine a beep signal of an audible frequency band and an ultrasonic signal of an ultrasonic frequency band to generate a supergain signal, The present invention provides an apparatus and method for outputting a warning sound using a supergain speaker that allows a vehicle approaching from the vehicle to recognize an accident of the vehicle from a long distance.

According to an embodiment of the present invention, a warning sound output apparatus using a supergain speaker includes a main body, a warning sound generator installed on at least one side of the main body, for generating a warning sound signal in an audible frequency band, And an ultrasonic wave generator for generating an ultrasonic signal in an ultrasonic frequency band and a supergain signal output unit for outputting a supergain signal generated by synthesizing the ultrasonic signal and the alarm sound signal.

In one embodiment, the body portion may be detachably attached to one side of the vehicle.

In one embodiment, the alarm sound output apparatus using the supergain speaker may further include a controller for controlling on / off states of the alarm sound generator, the ultrasonic generator, and the supergain signal output unit, , And a pulse width modulation (PWM) control method to control the ON / OFF states of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit.

In one embodiment, the warning sound output apparatus using the supergain speaker may further include an impact sensor for detecting an impact applied to the main body unit, wherein the controller controls the magnitude of the sensed impact, Off state of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit based on the magnitude of the signal.

In one embodiment, the warning sound output apparatus using the supergain speaker may include a position sensor for acquiring position information of the vehicle, and the control unit may control the driving state of the vehicle based on the obtained position information Off state of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit based on the determined running state.

In one embodiment, the warning sound output apparatus using the supergain speaker may further include a distance sensing sensor for sensing a distance of an object approaching the rear of the vehicle, The size of the supergain signal can be controlled based on the output signal.

In one embodiment, the warning sound output apparatus using the supergain speaker may include at least one lighting device installed on one side of the main body, a fabric material detachably attached to a back surface of the main body, And a power supply terminal connected to the main body cover and the external power supply and supplied with power from the external power supply.

A method of outputting a beep sound using a supergain speaker according to an exemplary embodiment of the present invention includes generating a beep signal of an audible frequency band by a beep sound generating unit, generating an ultrasonic signal of an ultrasonic frequency band, And outputting the supergain signal generated by synthesizing the ultrasound signal and the alarm sound signal.

In one embodiment, the alarm sound output method using the supergain speaker may further include a step of controlling the on / off states of the alarm sound generator, the ultrasonic generator, and the supergain signal output unit, Controlling the ON / OFF states of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit using a pulse width modulation (PWM) control method.

In one embodiment, the controlling step may include sensing an impact occurring in the vehicle, detecting the impact of the warning sound generator, the ultrasonic generator and the supergain signal output Wherein the control unit is operable to control the unit to be turned on, acquire position information of the vehicle, determine a running state of the vehicle based on the obtained position information, And controlling the on / off states of the generating unit and the supergain signal output unit.

In one embodiment, the controlling further includes sensing a distance of an object approaching the rear of the vehicle, and adjusting a size of the supergain signal output based on the distance of the sensed object .

The present invention synthesizes a beep signal in an audible frequency band and an ultrasonic signal in an ultrasonic frequency band to generate a supergain signal and outputs the generated supergain signal so that a vehicle approaching from the rear can recognize an accident There is an advantage to be able to do.

Further, by detecting the distance between the accident vehicle and the vehicle approaching the rear of the vehicle, and adjusting the magnitude of the super-directional signal based on the sensed distance, the driver of the vehicle approaching the rear can more reliably recognize It is advantageous in that it can be done.

In addition, based on the magnitude of the impact applied to the main body, it is determined whether or not an accident has occurred in the vehicle. By outputting a supergain signal based on the judgment result, It is possible to output a warning sound to the vehicle approaching the vehicle.

Further, there is an advantage that it is possible to prevent a warning sound from being output indiscriminately by judging the running state of the vehicle based on the position information of the vehicle, and outputting the supergain signal based on the determined running state.

Further, when an accident occurs in the vehicle, there is an advantage that one or more lighting devices are additionally operated so that the driver of the vehicle approaching from the rear can recognize that an accident has occurred in front of the vehicle with two warning lights and two lights.

FIG. 1 is a diagram schematically showing the components of an alarm sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention. Referring to FIG.
2 and 3 are views schematically showing the external structure of the beep sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention.
FIG. 4 is a view schematically showing a configuration in which a warning sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention is installed on a rear portion of a vehicle.
5 schematically shows a configuration in which the warning sound output apparatus 100 using the supergain speaker according to the embodiment of the present invention adjusts the magnitude of the supergain signal output by the distance from the vehicle approaching from the rear to be.
6 and 7 are views schematically showing a state in which the main body cover 210 is attached to the back surface of the main body 110 in the beep sound output apparatus 100 using the supergain speaker according to the embodiment of the present invention
FIG. 8 is a view schematically showing a state in which the main body 110 is covered by the main body cover 210 in the alarm sound output apparatus 100 using the supergain speaker according to the embodiment of the present invention.
9 is a flowchart illustrating a series of processes for outputting a warning sound using the alarm sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

FIG. 1 is a schematic view illustrating components of an alarm sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention. FIGS. 2 and 3 illustrate a supergain speaker according to an exemplary embodiment of the present invention. FIG. 3 schematically shows a configuration in which a warning sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention is installed on a rear portion of a vehicle. Fig.

1 to 4, an alarm sound output apparatus 100 using a supergain speaker according to an exemplary embodiment of the present invention includes a main body 110, a beep sound generating unit 120, an ultrasonic wave generating unit 130, A signal output unit 140, and a control unit 150. [

First, the main body 110 may include a warning sound generating unit 120, an ultrasound generating unit 130, and a supergain signal output unit 140. 2, the alarm sound generating unit 120, the ultrasonic wave generating unit 130, and the supergain signal output unit 140 may be constituted by one speaker unit 190, and the speaker unit 190 190 may be located at a central portion of the main body 110.

In one embodiment, one or more cavities may be formed on at least one side of the body portion 110, and the speaker portion 190 may be coupled to the at least one cavity.

In one embodiment, the body portion 110 may be formed in a rectangular or rectangular shape to facilitate attachment to a license plate located on the rear portion of the vehicle, as shown in FIG. In addition, the main body 110 may be formed of a synthetic resin such as an acrylic resin, a polyethylene resin, and a polystyrene resin. However, the present invention is not limited thereto, but may be formed in various sizes, shapes, and materials depending on the type of vehicle, the location to which it is attached, the place where it is used, and the environment.

In one embodiment, the body portion 110 may be removably attachable to one side of the vehicle, wherein the body portion 110 may include one or more detachable attachments at least a portion of the rear portion of the body portion 110 . For example, the at least one attaching / detaching portion may be a magnetic body such as a magnet, and may be attached to or detached from a side surface of the vehicle by a magnetic force possessed by the magnetic body.

The alarm sound generating unit 120 may be installed on at least one side of the main body 110 and may generate a warning sound in an audible frequency band. Here, the audible frequency may mean a frequency that a person can hear, and the audible frequency band may be 20 Hz to 20,000 Hz. The warning sound generating unit 120 may output a warning sound signal having a frequency of 20 Hz to 20,000 Hz. For example, the alarm sound generating unit 120 may repeatedly generate a sound of 300 Hz to 750 Hz, such as a siren sound used in a fire truck, an ambulance, and a police car. In one embodiment, the alert sound generator 120 may include one or more Audio-Frequency Oscillators.

The ultrasonic wave generator 130 may be installed on at least one side of the main body 110 and may generate an ultrasonic signal in an ultrasonic frequency band. Here, the ultrasonic frequency may refer to a frequency higher than the audible frequency that a human can hear, and the ultrasonic frequency band may be higher than 20 kHz. The ultrasound generating unit 130 may generate an ultrasound signal having an ultrasound frequency of 20 kHz or more, and may include at least one of an ultrasound sensor and an ultrasonic wave oscillator.

The supergain signal output unit 140 may generate a supergain signal by combining the beep signal generated by the beep generator 120 and the ultrasound signal generated by the ultrasound generator 130, Can be output. Here, synthesizing the beep signal and the ultrasonic signal may mean modulating the beep signal and the ultrasonic signal. For example, a beep signal and an ultrasonic signal can be synthesized by modulating a beep signal and an ultrasonic signal using either Amplitude Modulation (AM) or Pulse Width Modulation (PWM). Here, the supergain signal may refer to an ultrasonic beam generated due to interference between the beep signal and the ultrasonic signal. For example, the supergain signal output unit 140 may generate an ultrasonic beam having a supergain by modulating the beep signal of the audible frequency band generated by the beep sound generating unit 120 into a frequency band capable of being transmitted by the ultrasonic vibrator. have. The ultrasound beam may have a property of being distorted in a predictable direction due to the intrinsic property of the space, that is, nonlinearity, and may be converted into an audible frequency band due to distortion properties.

In one embodiment, the supergain signal output 140 may include one or more transducers capable of modulating the beep signal to produce an ultrasonic beam.

The control unit 150 may control the on / off states of the alarm sound generator 120, the ultrasonic generator 130, and the supergain signal output unit 140. Here, the on / off state is controlled by controlling the alarm sound generating unit 120 which does not generate the alarm sound signal to generate the alarm sound signal, or by controlling the alarm sound generating unit 120 which generates the alarm sound signal, May be stopped. For example, the control unit 150 controls the conduction state of the switch that connects the alarm sound generator 120, the ultrasonic generator 130, the supergain signal output unit 140, and the power supply terminal 220, So that the on / off state can be controlled.

In one embodiment, the controller 150 may control the on / off states of the alarm sound generator, the ultrasonic generator, and the supergain signal output unit using a pulse width modulation (PWM) control scheme. For example, the control unit 150 can output a warning sound signal such as a siren sound by adjusting the duty ratio using the PWM control method.

In one embodiment, the alarm sound output apparatus 100 using a supergain speaker may further include a shock detection sensor 160 for detecting an impact applied to the main body 110, according to an embodiment of the present invention The control unit 150 may control the ON / OFF states of the alarm sound generator 120, the ultrasonic generator 130, and the supergain signal output unit 140 based on the magnitude of the sensed shock.

The control unit 150 compares the magnitude of the shock sensed by the shock sensor 160 with the magnitude of the predetermined shock and generates a warning sound generator 120, an ultrasonic generator 130, and a supergain signal The on / off state of the output unit 140 can be controlled. Here, the size of the predetermined impact may be a value obtained by preliminarily setting a reference impact magnitude that can be applied to the main body 110 when an accident occurs in the vehicle to determine whether an accident has occurred in the vehicle. For example, the controller 150 can set 1 to 10 levels according to the magnitude of the impact, and can set the 5 levels to a reference impact magnitude for determining whether an accident has occurred in the vehicle. The control unit 150 may determine that an accident has occurred in the vehicle and may generate the warning sound generating unit 120, the ultrasonic wave generating unit 130, and the super directional The state of the signal output unit 140 can be controlled to be in the ON state. As a result, it is possible to output a supergain signal even when the driver is unable to leave the vehicle due to a large accident in the vehicle, thereby preventing damage to the secondary car.

In one embodiment, the warning sound output apparatus 100 using the omni-directional speaker according to an embodiment of the present invention may further include a position sensor 170 for obtaining position information of the vehicle, Based on the obtained positional information, the on / off state of the warning sound generating unit, the ultrasonic generator and the supergain signal output unit based on the determined traveling state.

The control unit 150 may determine the driving state of the vehicle based on the position information of the vehicle obtained from the position sensor 170. Here, the running state may mean the movement of the vehicle. For example, the running state may include any one or more of running, parking, and stopping while driving. For example, when the vehicle is parked for a long time in the parking lot, the position information of the vehicle obtained from the position sensor 170 does not change, so that the controller 150 can determine that the current vehicle is in the parking state. In this case, when an accident occurs in the vehicle and an impact greater than a predetermined impact magnitude is applied to the main body 110, the control unit 150 determines that an accident has occurred in the vehicle and outputs the warning sound generating unit 120, Directional signal output unit 140 and the supergain signal output unit 140 can be controlled on the basis of the state of the current vehicle being parked, the warning sound generating unit 120, the ultrasonic generator 130, The on / off state of the switch 140 may not be controlled. This makes it possible to prevent the super-directional signal from being output indiscriminately.

In one embodiment, the beep output device 100 using the omnidirectional speaker may further include a distance sensing sensor 180 that senses the distance of an object approaching the rear of the vehicle, according to one embodiment of the present invention , The controller 150 may adjust the size of the supergain signal output based on the distance of the sensed object based on the distance of the sensed object. The configuration for adjusting the size of the supergain signal based on the distance of the object approaching from the rear of the vehicle will be described in more detail with reference to FIG.

5 schematically shows a configuration in which the warning sound output apparatus 100 using the supergain speaker according to the embodiment of the present invention adjusts the magnitude of the supergain signal output by the distance from the vehicle approaching from the rear to be.

Referring to FIG. 5, when a warning sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention generates an accident in a rear-mounted vehicle, it can output a supergain signal. This allows the vehicle approaching from behind to recognize that a vehicle accident has occurred in the front. However, when the driver of the vehicle approaching from the rear can not hear the supergain signal due to the sound of the music, the noise generated from the inside or the outside, or the output size of the supergain signal is set small enough that the driver of the vehicle can not recognize, The driver of the approaching vehicle may not be aware that an accident has occurred in the forward direction. At this time, the controller 150 detects the distance from the vehicle approaching from the rear through the distance sensor 150, and increases the magnitude of the output supergain signal when the sensed distance is less than the predetermined distance r . Here, the predetermined distance r may be a value that sets a distance necessary to recognize and cope with the occurrence of an accident ahead in the vehicle approaching from the rear.

In one embodiment, the controller 150 may calculate the predetermined distance r according to the speed of the object approaching from the rear. For example, when the vehicle approaching from the rear is higher than the reference speed, the controller 150 may increase the predetermined distance r, and may decrease the predetermined distance r when the vehicle is lower than the reference speed have.

In one embodiment, the controller 150 may set the predetermined distance r step by step and adjust the magnitude of the supergain signal output according to the set step. For example, the controller 150 can divide the predetermined distance r into three equal parts and set the first to third zones, respectively, and the magnitude of the supergain signals output for each zone can be set to one to three levels . At this time, when the vehicle approaching from the rear enters the first zone, the control unit 150 controls the alarm sound generator 120, the ultrasonic generator 130, and the supergain signal output unit 140, So that the directivity signal can be outputted. If the vehicle entering the zone 1 does not decelerate or enters the zone 2 without departing from the zone 1, the control unit 150 controls the warning sound generator 120, the ultrasonic generator 130, Directional signal of a two-stage magnitude by controlling the first-order magnitude signal 140. [

In one embodiment, the beep output device 100 using a supergain speaker according to an embodiment of the present invention further includes one or more lighting devices 200, a main body cover 210 and a power supply terminal 220 can do. 6 and 7 and will be described in more detail below.

FIGS. 6 and 7 are views schematically showing a configuration in which a main body cover 210 is attached to an alarm sound output apparatus 100 using a supergain speaker according to an embodiment of the present invention. FIG. FIG. 2 is a view schematically showing a form in which a warning sound output apparatus 100 using a supergain speaker according to an embodiment is covered by a main body cover 210; FIG.

6 to 8, at least one illumination device 200 is installed on one side of the main body 110, and may be turned on when an accident or a failure occurs in the vehicle. For example, when it is determined that an accident has occurred in the vehicle due to an impact applied to the main body 110, the control unit 150 controls the alarm sound generator 120, the ultrasonic generator 130, The on / off state of the unit 140 and the one or more lighting devices 200 can be controlled to be turned on. As an example, the at least one lighting device 200 may be an LED module comprising one or more LEDs.

The main body cover 210 is formed of a fabric material and can be detachably attached to the back surface of the main body 110 and can cover the main body 110. In one embodiment, the main body cover 210 is made of a waterproof material that is waterproof in the fabric material, so that the beep output device 100 using the supergain speaker according to an embodiment of the present invention is damaged . It is difficult for the main body 110 to adhere to the rear surface of the vehicle when the accident occurs in the vehicle and serious damage occurs to the rear portion of the vehicle and it is impossible to output the supergain signal in the correct direction. At this time, by attaching the main body cover 210 formed of a fabric material to the back surface of the main body 110 and attaching the main cover 210 to the rear portion of the vehicle, a supergain signal is output in the correct direction .

6, when the beep sound output apparatus 100 using the supergain loudspeaker according to the embodiment of the present invention is not used, the main body cover 210 may be attached to the outer surface of the main body 110, Thereby preventing damage or failure due to external factors.

The power supply terminal 220 is connected to an external power supply and can receive power from the external power supply. The power supplied to the power supply terminal 220 is supplied to the configuration Element. Hereinafter, a method of outputting a warning sound using the alarm sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention will be described with reference to FIG.

9 is a flowchart illustrating a series of processes for outputting a warning sound using the alarm sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention.

First, when a warning sound output method using a supergain speaker is started, the driving state of the vehicle is determined based on the position information of the vehicle (S110). If it is determined in step S110 that the vehicle is not driving, the operation proceeds to step S110. If the vehicle is running, the driving state of the vehicle may be determined as 'driving'. When the running state of the vehicle is 'running', it is determined whether an accident has occurred in the vehicle based on the magnitude of the impact applied to the body portion (S120). It is determined that an accident has occurred in the vehicle when the size applied to the main body portion is equal to or larger than a predetermined size in step S120. If it is determined in step S120 that an accident has occurred in the vehicle, the state of the beep sound generating unit and the ultrasonic wave generating unit are controlled to be on-state to synthesize the supergain signal (S130).

At this time, the presence or absence of the vehicle approaching from the rear of the accident vehicle and the distance to the approaching vehicle are detected and the magnitude of the supergain signal outputted is controlled (S140 and S150).

As described above, the beep sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention generates a supergain signal by synthesizing a beep signal of an audible frequency band and an ultrasonic signal of an ultrasonic frequency band, By outputting the directional signal, it is advantageous that the vehicle approaching from the rear can recognize the accident of the vehicle from a long distance, thereby preventing a secondary accident.

In the specification, the apparatus 100 for outputting a beep sound using a supergain speaker according to an embodiment of the present invention is only applied to a vehicle, but the present invention is not limited thereto and can be applied to various fields . For example, the warning sound output apparatus 100 using the supergain speaker according to an embodiment of the present invention may be combined with a road traffic sign such as a stop sign in the United States or a deceleration sign installed in a construction section, Or by outputting a warning sound to a vehicle that is overspeed in a section requiring deceleration, it is possible to induce the vehicle to decelerate or stop.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

110:
120: a warning sound generating unit;
130: Ultrasonic wave generator
140: a supergain signal output section
150:
160: Shock sensor
170: Position sensor
180: Distance sensor
190: speaker section
200: Lighting device
210: main body cover part
220: Power supply terminal

Claims (5)

A warning sound output device for outputting a warning sound to an object approaching the vehicle, the warning sound output device being installed on one side of the vehicle,
A main body detachably attached to one side surface of the vehicle;
A speaker unit disposed on one side of the main body;
A distance sensor for detecting a distance of an object approaching the rear of the vehicle;
A position sensor for obtaining positional information of the vehicle; And
And a controller for controlling the magnitude of the supergain signal to be output as the distance of the object becomes closer, based on the detected distance of the object,
Wherein the speaker unit comprises: a warning sound generating unit for generating a warning sound signal in an audible frequency band; An ultrasonic generator for generating an ultrasonic signal in an ultrasonic frequency band; And a supergain signal output unit for outputting a supergain signal generated by synthesizing the generated ultrasonic signal and the beep signal,
The speaker unit has a plurality of cavities on one side surface of the main body part, and the plurality of cavities are arranged adjacently so as to have a hexagonal honeycomb shape as a whole,
The warning sound output device may further include a main body cover part formed of a fabric material and detachably attached to the back surface of the main body part and covering the main body part. The main body cover part may be provided on the rear part of the vehicle So that the supergain signal can be output toward the rear direction,
The control unit may determine the driving state of the vehicle based on the obtained position information, and determine on / off states of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit based on the determined traveling state Wherein the control unit controls the warning sound generator, the ultrasonic generator and the supergain signal output unit so as not to operate when the vehicle is parked.
A warning sound output device using a super directional speaker.
The method according to claim 1,
Wherein,
And controls the on / off states of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit using a pulse width modulation (PWM) control method.
A warning sound output device using a super directional speaker.
3. The method of claim 2,
The beep sound output apparatus using the supergain speaker comprises:
And an impact sensor for sensing an impact applied to the main body,
Wherein,
And controls the ON / OFF states of the warning sound generating unit, the ultrasonic wave generating unit, and the supergain signal output unit based on the magnitude of the sensed impact and the magnitude of the predetermined impact.
A warning sound output device using a super directional speaker.
delete The method according to claim 1,
The beep sound output apparatus using the supergain speaker comprises:
At least one lighting device installed on one side of the main body; And
And a power supply terminal connected to the external power supply and receiving power from the external power supply.
A warning sound output device using a super directional speaker.

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