KR20180025306A - Tram warning unit having a ultra-directional acoustic source and a tram warning system having the same - Google Patents

Abstract

The present invention relates to a tram alarm unit using a super-directional sound source and a tram alarm system including the same. The tram alarm unit comprises: a super-directional sound source part including a plurality of speaker units emitting ultrasonic beams in different directions, respectively; a speaker selection part selectively operating a speaker unit in which the ultrasonic beam is emitted in a specific direction; and an output adjustment part adjusting an output of each of the speaker units to control a distance that an acoustic signal reaches.

Description

TECHNICAL FIELD [0001] The present invention relates to a tram alarm unit using a supergiant sound source, and a tram alarm system including the tram alarm unit using the supergain sound source.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tram alarm unit and a tram alarm system including the tram alarm unit. More particularly, the present invention relates to a tram alarm unit and a tram alarm system including the tram line, A tram alarm unit using a supergiant sound source for alerting a tram to pass through a pedestrian, a car, a bicycle, etc., and a tram alarm system including the tram alarm unit.

Conventionally, in order to warn that a tram is approaching a pedestrian or an automobile on a track, when the engine of the tram is visually confirmed, a sound is emitted using a general speaker. In the case of a general speaker, it has an isotropic property that can hear sound in all directions by using acoustic signals such as bells or music.

In the conventional acoustic warning device, it is essential that the process of confirming with the naked eye is performed by the engineer, and if the object is not found in the vicinity of the track, a collision accident may be issued because the warning is not given properly.

In addition, when a sound signal for giving a warning is emitted through a general speaker, sound is propagated in all directions, thereby causing unnecessary noise pollution not only in the vicinity of the line but also in people who are unrelated and in houses and shopping malls.

Korean Patent Registration No. 10-0622078 Korean Patent Publication No. 10-2013-0076495

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a warning sound to only a target to be alerted around a railway line, without causing unnecessary noise pollution in a person, The present invention relates to a tram alarm unit that sends clear sound alerts through sufficient acoustic output from angles to distances.

Another object of the present invention is also a tram alarm system comprising the tram alarm unit.

The tram alarm unit according to an embodiment of the present invention for realizing the object of the present invention includes a supergain sound source unit including a plurality of speaker units each emitting an ultrasonic beam in different directions, A speaker selection unit for selectively operating the speaker units emitted in the direction of the speaker unit, and an output controller for controlling the distance at which the acoustic signals arrive by adjusting outputs of the speaker units.

In one embodiment, each of the speaker units may have a different setting angle with respect to the extending direction of the supergain sound source.

In one embodiment, the speaker selecting unit may select one or a plurality of speaker units among the speaker units.

In one embodiment, the control unit further includes a control unit for changing a setting angle of the speaker units, and the direction of the speaker units can be changed in the direction of the object under the control of the control unit.

In one embodiment, the tram alarm unit may be installed on a tram or a strut around a track, a traffic light, or a sign.

According to another aspect of the present invention, there is provided a tram alarm system including a supergain sound source unit including a plurality of speaker units each emitting an ultrasonic beam in different directions, A tram alarm unit including a speaker selection unit for selectively operating the speaker units to be emitted in a specific direction and an output control unit for controlling the distance at which the acoustic signals arrive by adjusting the output of each of the speaker units; A difference sub-system that links the supersonic sound source, the speaker selection unit, and the output unit with the on-board support device, A tram controller for monitoring the position of the tram in real time and managing the dispatch of the tram, A road traffic control device for communicating road traffic information in real time with the tram control device, a tram signal device for wireless communication with the on-board driving support device within a certain distance from the intersection, And a road traffic signal controller for transmitting information.

In one embodiment, the onboard subsystem can control a direction of a sound source of the supergain sound source based on the line information and the position information.

In one embodiment, the onboard operation support device can determine whether the line through which the tram passes is a straight line portion, a curved portion, or an intersection.

In one embodiment, when the tram runs on a line that is a straight line, the supergain sound source may emit an ultrasound beam forward.

In one embodiment, when the tram travels along a curved line, the supergain sound source may emit an ultrasonic beam in the speaker unit at an angle corresponding to the direction of travel.

In one embodiment, when the tram runs on an intersection line, the supergain sound source may emit an ultrasound beam in the left or right direction, or in the left and right directions.

In one embodiment, the onboard operation support device may provide pre-stored line information and location information that is interfaced with the line information and the local information transmission device on a point-by-point basis.

In one embodiment, the article local information transmission device may use at least one of WIFI, UTIS, or RFID tags.

According to the tram alarm unit using the supergain sound source according to the present invention and the tram alarm system including the tram alarm unit according to the present invention, it is possible to prevent the noise pollution around the tram line and to report the tram operation status only to pedestrians, bicycles, It can contribute to prevention of safety accidents such as collision.

In addition, animals (dogs, cats, etc.) are susceptible to ultrasonic waves and have an accident prevention effect of colliding with trams due to ultrasonic signals utilized by the supergain sound source of the present invention.

In addition, a warning signal can be selectively given only to the objects around the line through the speaker selection unit.

In addition, it is possible to arrange the supergain speaker units so as not to have a mechanical operating part, thereby preventing malfunction of the alarm device and improving the response speed when emitting signals at different acoustic radiation angles.

In addition, the tram system, the line information and the tram position information can be interlocked and an alarm signal according to the traveling direction of the tram can be automatically emitted without the intervention of the tram engine.

Furthermore, in addition to the tram, it is possible to install a supergiant sound source alarm device in the vicinity of the line such as an intersection, a place with a lot of pedestrians or a place with a high possibility of an accident, so that the tram operation information can be alarmed only in the selective area.

1 is a block diagram showing a tram alarm unit according to an embodiment of the present invention.
FIG. 2 is an image showing that the supergiant sound source of FIG. 1 emits a supergiant sound source in a desired direction when traveling on a tram to give a selective sound alert.
FIGS. 3A to 3C are schematic diagrams illustrating the emission of an ultrasonic beam in different directions from the speaker units of FIG. 1, respectively.
4 is a schematic diagram showing a tram alarm unit according to another embodiment of the present invention.
5 is a block diagram illustrating a tram alarm system including the tram alarm unit of FIG. 1 or FIG. 4;

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a block diagram showing a tram alarm unit according to an embodiment of the present invention.

1, a tram alarm unit using a supergain sound source according to an exemplary embodiment of the present invention includes a supergain sound source unit 100, a speaker selection unit 110, and an output control unit 120.

The supergain sound source unit 100 is installed at the front of the tram, but may also be installed in a facility near a line such as a pillar, a sign, and a signal lamp. The supergain sound source unit 100 may be mounted on a substrate (not shown), and the substrate may be embodied as a typical printed substrate.

The supergain sound source may include a plurality of speaker units 101, 102, ..., 105, and may be driven to emit sound to an acoustic space whose boundaries can be defined at a predetermined limited orientation angle.

Since the sound is in the form of an ultrasonic beam and is sensitive to an ultrasonic beam in the case of an animal, the supergain sound source unit 100 may give a warning signal to a target object such as an animal.

The speaker units 101, 102, ..., 105 may be fixedly installed to emit an ultrasonic beam in different directions. That is, each of the spin units 101, 102, ..., and 105 may be installed in a structure having a different setting angle (orientation angle) so as to emit sound to different acoustic spaces.

Although FIG. 1 shows five speaker units of the first to fifth speaker units 101, 102, ..., 105, the number of the speaker units may be variously changed.

In addition, the speaker units 101, 102, ..., and 105 may be speakers that provide directivity using a parabolic reflector according to an embodiment, and sound having directivity according to a beam forming technique using appropriate phase delay. And the ultrasonic modulation method in which a plurality of acoustic signal waveforms in the ultrasonic band are encountered at a specific position or are emitted and scattered at a human ear in a path so that an audible frequency band signal appears, It may also emit the sound it has.

The speaker units 101, 102, ..., 105 may be arranged one-dimensionally or two-dimensionally on the substrate. For example, the speaker units 101, 102, ..., and 105 may be formed in a sphere densified structure such that speaker units are arranged at vertexes of dense hexagons such as a honeycomb. Alternatively, the speaker units may be arranged in such a manner that the speaker units are arranged at the vertexes of the dense squares.

Also in this case, each of the speaker units 101, 102, ..., 105 is installed so as to face in different directions, and can emit sound only in a required direction.

The overall shape of the supergain sound source 100 may have a shape similar to a one-dimensional geometric shape such as a circle, a rectangle, a diamond, a hexagon, or the like, but is not limited thereto. For example, .

On the other hand, light emitting units (not shown) capable of emitting guiding light while the speaker units emit sound are installed in an area adjacent to the area where the speaker units 101, 102, ..., 105 are arranged .

For example, the light emitting units may be implemented as an LED lamp, a round diffuser, and a condensing unit, and may be disposed around the speaker units. The strong light of the LED lamp can be illuminated through the diffusion plate and the light condensing means and spreading smoothly with a predetermined diffusion angle. In this case, the guide light can illuminate brightly covering the entire acoustic space.

Meanwhile, the speaker selecting unit 110 may selectively operate the speaker unit such that the ultrasonic beam is emitted in a specific direction. When the tram engineer senses an object in the vicinity of the tram, the speaker selector 110 is selected to transmit the acoustic signal to the object.

For example, when the supergain sound source unit 100 is installed at the front of the tram, and the object is at a position where the supergiant sound source unit 100 forms an angle of 60 degrees from the front of the tram, A 60-speaker unit can be selectively activated.

Also, considering the distance between the tram and the object, the distance through which the sound signal reaches through the output control unit 120 can be adjusted.

The output controller 120 controls outputs of the speaker units 101, 102, ..., and 105, respectively. Therefore, the distances of the acoustic signals emitted from the speaker units 101, 102, ..., and 105 can be controlled differently by different outputs of the speaker units 101, 102, ..., 105.

FIG. 2 is an image showing that the supergiant sound source of FIG. 1 emits a supergiant sound source in a desired direction when traveling on a tram to give a selective sound alert.

Referring to FIG. 2, the supergain sound source unit 100 installed at the front of the tram can emit sound in a super-directional sense only to the pedestrians around the line. Therefore, it is possible to inform the tram operation status to the pedestrians around the track, thereby preventing accidents such as collision and giving a warning signal selectively.

FIGS. 3A to 3C are diagrams showing the emission of an ultrasonic beam by changing the angles of the speaker units of FIG. 1, respectively.

3A, the third speaker unit 103 is installed in parallel with the longitudinal direction of the supergain sound source unit 100. Accordingly, the third speaker unit 103 can emit sound (ultrasound beam) having a directivity angle of 90 degrees with respect to the supergain sound source unit 100. [

In FIG. 3B, the fourth speaker unit 104 forms an angle of 60 degrees with respect to the longitudinal direction of the supergain sound source unit 100. Therefore, the fourth speaker unit 104 can emit an acoustic wave (ultrasound beam) having a directivity angle of 60 degrees with respect to the supergain sound source unit 100.

In FIG. 3C, the fifth speaker unit 105 forms an angle of 30 degrees with respect to the longitudinal direction of the supergain sound source 100. Therefore, it can be installed to emit an ultrasonic beam at 30 degrees with respect to the supergain sound source unit 100.

As described above, in the present embodiment, the speaker units of the supergain sound source unit 100 include a plurality of speaker units 101, 102, ..., 105 provided in the supergain sound source unit 100, (A set angle) with respect to the longitudinal direction of the vehicle.

Therefore, the tram alarm unit 10 according to the present embodiment does not require a mechanical operation portion by arranging the inclination angles of the speaker units 101, 102, ..., 105 with respect to the supergain sound source portion 100 differently from each other .

Thus, it is possible to prevent the failure of the alarm device 10 and to improve the response speed when the signal is radiated at different acoustic radiation angles. Therefore, it is possible to select one or a plurality of speaker units having an acoustically-oriented angle that can reach the object among the speaker units according to the object to which the acoustic signal is to be emitted.

In this case, the installation direction and the number of the speaker units 101, 102, ..., and 105 may be variously changed as needed.

4 is a schematic diagram showing a tram alarm unit according to another embodiment of the present invention. The tram alarm unit 20 according to the present embodiment is substantially the same as the tram alarm unit 10 described with reference to Fig. 1, except that it further includes the control unit 130, The description is omitted.

Referring to FIG. 4, in order to emit a strong acoustic signal to the object 40 from the tram alarm unit 20 according to the present embodiment, a plurality of speaker units must be selected.

At this time, the controller 130 controls the speaker units to change the setting angle of the speaker units 101, 102, ..., 105 so as to have a set angle at which sound signals can be emitted to the object.

That is, as shown in FIG. 4, the setting angles of the first, second, fourth, and fifth speaker units 101, 102, ..., 105 are changed so as to emit acoustic signals to the object 40 , All of the speaker units (101, 102, 103, ..., 105) may emit sound to the target body (40).

In this case, the controller 130 may change the setting angle of all or a part of the speaker units 101, 102, ..., 105 in the direction toward the target object 40, taking the position of the target object 40 into consideration. And emit sound.

Thus, it is possible to more effectively perform the warning on the object 40. [

FIG. 5 is a block diagram illustrating a tram alarm system 60 including the tram alarm unit of FIG. 1 or 2.

5, the tram alarm system 60 includes a tram alarm unit 10, a tram control unit 600, a road traffic control unit 610, a tram signal unit 620, a road traffic signal controller 630, an onboard operation support device 640, and an onboard subsystem 650.

In this case, the on-road support device 640, the onboard subsystem 650, and the tram alarm unit 10 constitute a tram 660.

The tram controller 600 monitors the position of the tram 660 in real time and performs dispatch management of the tram 660. The tram controller 600 can transmit and receive road traffic information to and from the road traffic controller 610 in real time, in particular, information for on-time operation of the tram 660.

The tram signal device 620 detects whether or not the tram 660 enters by using the entrance detection means installed at a predetermined distance from the intersection and detects the entrance of the tram 660 by using the entry detection means installed after a certain distance from the intersection. Is detected.

Also, the tram signal device 620 communicates with the on-road support device 640 using short-range wireless communications that can communicate with the trams 660 within a certain distance from the intersection. As the short-range wireless communication, for example, a communication method such as UTIS (Urban Traffic Information System), WiFi, or the like can be used.

The tram signal device 620 may send a priority signal control request for the scheduled operation of the tram 660 to the road traffic signal controller 630 installed at the intersection where the tram signal device 620 is installed .

When the road traffic signal controller 630 transmits information about when the tram 660 should pass to the tram signal device 620, the tram signal device 620 may select the tram 660 Information about the speed of the tram 660 that can pass through irregularly or information about the time at which it can pass irregularly at an intersection can be transmitted to the onboard driving support device 640.

The on-road support device 640 is installed on the tram 660. The on-road driving support device 640 is provided with a GPS receiver, and detects its own position and periodically acquires the sensed position information using a wide area wireless communication system, for example, a mobile communication system such as 3G, 4G, or LTE And reports it to the tram controller 600.

The tram alarm unit 10 is interlocked with the on-board driving support apparatus 640 through the onboard subsystem 650.

The onboard operation support apparatus 640 receives the line information and the position information. The line information is based on GPS information and includes the position of the line section, the type of the line section, and the like. The line information is stored in the onboard operation support device 640.

The position information is received by the GPS receiver installed in the onboard operation support device 640 or interfaced with the line information by a local information transmission device (not shown) on a point-by-point basis.

Preferably, the local information transmitting apparatus uses at least one of WIFI, UTIS (Urban Traffic Information System), and RFID tags.

The onboard subsystem (650) may control the direction of the sound source of the supergain sound source (100) based on the line information and the location information.

In this embodiment, the tram alarm unit 10 is interlocked with the on-board driving support device 640 through the onboard maintenance subsystem 650 so that the tram alarm unit 10 can be automatically operated in the direction of the tram 660 An alarm signal can be emitted.

For example, in the line information provided by the onboard operation support apparatus 640, when the line is formed as a straight line, the supergain sound source unit 100 may emit an ultrasound beam forward. That is, the onboard subsystem 650 may operate the speaker unit of the supergain sound source unit 100 installed at an angle parallel to the traveling direction of the tram 660.

Further, when the line is formed as a curved portion, the ultrasonic beam can be emitted from the speaker unit of the supergain sound source unit 100 at a corresponding angle corresponding to the traveling direction, in accordance with the running direction. That is, the onboard subsystem 650 can operate the speaker unit of the supergain sound source unit 100, which emits an ultrasonic beam in a tangential direction to the curved portion while the tram runs on the curved portion.

On the other hand, when the line is formed as an intersection, the supergain sound source 100 may emit an ultrasonic beam in the left or right direction, or in the left and right directions.

The onboard operation support device 640 determines the type of the line, that is, the straight line, the curved line, or the intersection based on the pre-stored line information.

On the other hand, if there is a gait signal on the line during operation of the tram 660, the onboard operation support device 640 confirms the gait signal based on the pre-stored line information or location information, and the tram alarm unit 10 To emit an ultrasonic beam.

At this time, the tram alarm unit 10 generates an intensive ultrasound beam in all directions, and informs the pedestrians in the vicinity of the gait signal that the tram 660 passes through the line. At this time, the onboard operation support device 640 can operate all the speaker units of the supergain sound source unit 100 having different setting angles so as to emit sound in the other direction.

Alternatively, when the tram alarm unit 10 further includes the control unit 130, each of the speaker units is controlled so as to be variable in direction, so that the direction of the speaker unit is variable in consideration of the position of the object, So that the sound can be generated more effectively.

According to the embodiments of the present invention, according to the tram alarm unit using the supergain sound source according to the present invention, it is possible to prevent the noise pollution around the tram line, It can contribute to prevention of safety accidents such as collision.

In addition, animals (dogs, cats, etc.) are susceptible to ultrasonic waves and have an accident prevention effect of colliding with trams due to ultrasonic signals utilized by the supergain sound source of the present invention.

In addition, a warning signal can be selectively given only to the objects around the line through the speaker selection unit.

In addition, it is possible to arrange the supergain speaker units so as not to have a mechanical operating part, thereby preventing malfunction of the alarm device and improving the response speed when emitting signals at different acoustic radiation angles.

In addition, the tram system, the line information and the tram position information can be interlocked and an alarm signal according to the traveling direction of the tram can be automatically emitted without the intervention of the tram engine.

Furthermore, in addition to the tram, it is possible to install a supergiant sound source alarm device in the vicinity of the line such as an intersection, a place with a lot of pedestrians or a place with a high possibility of an accident, so that the tram operation information can be alarmed only in the selective area.

10: tram alarm unit 100: super directional sound source unit
102: speaker unit 110: speaker selection unit
120:

Claims (3)

A supergain sound source unit installed at the front of the tram and including a plurality of speaker units each emitting an ultrasonic beam in different directions, a speaker unit which is emitted such that the ultrasonic beam is emitted in a specific direction, And an output control unit for controlling a distance at which the acoustic signal arrives by adjusting an output of each of the speaker units.
An onboard operation support device installed on the tram for storing the line information and receiving the location information of the tram through a GPS receiver;
Directional sound source unit, the speaker selection unit, and the output control unit of the tram alarm unit are interlocked with the on-board driving support apparatus, and the on- Subsystem;
A tram controller which monitors the position of the tram in real time and performs dispatch management of the tram;
A road traffic control device for communicating road traffic information in real time with the tram controller;
A tram signal device for wirelessly communicating with the on-road support device when the tram is within a predetermined distance from the intersection;
And a road traffic signal controller installed at an intersection for transmitting the passage information of the tram to the tram signal device,
Wherein each of the speaker units in the tram alarm unit is fixedly installed at a different setting angle with respect to the extending direction of the supergain sound source unit, And one or a plurality of speaker units each having a set angle to be reached are selected,
Wherein the onboard operation support device determines whether the line through which the tram passes is a straight line portion, a curved portion, or an intersection,
The onboard subsystem,
Directional sound source unit installed at an angle parallel to the running direction of the tram when the straight line unit travels, and the speaker units emit an ultrasound beam forward,
The speaker units of the supergain sound source unit emitting the ultrasonic beams in a tangential direction to the curved portions are operated so that the speaker units emit the ultrasonic beams in accordance with the traveling direction,
Directional sound source unit that emits an ultrasonic beam in the left or right direction when the vehicle runs on the intersection so that the speaker units emit the ultrasonic beam in the left or right direction,
Wherein the onboard operation support device confirms the gait signal on the basis of the line information and the position information when the line includes a gait signal and controls the tram alerting unit to emit an ultrasonic beam in all directions Tram alarm system. The on-vehicle driving support apparatus according to claim 1,
And the location information is interfaced by the local information transmission apparatus on a point-by-point basis. 3. The method of claim 2,
Wherein the local information transmission device uses at least one of WIFI, UTIS, or RFID tags.

Images