EP3148844A1 - An external noise emission system - Google Patents

An external noise emission system

Info

Publication number
EP3148844A1
EP3148844A1 EP15733559.7A EP15733559A EP3148844A1 EP 3148844 A1 EP3148844 A1 EP 3148844A1 EP 15733559 A EP15733559 A EP 15733559A EP 3148844 A1 EP3148844 A1 EP 3148844A1
Authority
EP
European Patent Office
Prior art keywords
noise
vehicle
emission system
parametric
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15733559.7A
Other languages
German (de)
French (fr)
Inventor
Ayhan YAGCI
Mehmet GURER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tofas Turk Otomobil Fabrikasi AS
Original Assignee
Tofas Turk Otomobil Fabrikasi AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tofas Turk Otomobil Fabrikasi AS filed Critical Tofas Turk Otomobil Fabrikasi AS
Publication of EP3148844A1 publication Critical patent/EP3148844A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching

Definitions

  • the present invention relates to an external noise emission system which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety.
  • Great Britain Patent Document no GB2497642 an application known in the state of the art, discloses a system which generates an artificial noise formed via the vehicles having a computer program for carrying out the invented method, and a device for generating artificial driving noises for a motor vehicle.
  • environmental conditions, object and/or other road users in-vehicle information are formed in a certain way; a mechanism generating an artificial noise is disclosed by gathering all data depending on driving via an environmental sensor unit.
  • German Patent Document no DE102009057683A1 an application known in the state of the art, discloses a system which is used while driving and warns other users on the road (pedestrian-biker etc.).
  • United States Patent Document no US20120179280 an application known in the state of the art, discloses a warning system which can be used for electrical or hybrid vehicles.
  • the objective of the present invention is to provide an external noise emission system which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety.
  • An external noise emission system developed to fulfill the objective of the present invention is illustrated in the accompanying figure, in which:
  • Figure 1 is the schematic view of an external noise emission system.
  • An external noise emission system (1) which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety, essentially comprises
  • At least one electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data
  • At least one camera (3) which continuously records images and sends the recorded images to the electronic control unit (2),
  • At least one can-bus (4) which is adapted to transmit the speed and gas pedal position information of the vehicle to the electronic control unit (2), at least one parametric noise generator (5) which modulates the artificial noise (audio) signal it receives from the electronic control unit (2) on the carrier ultrasonic signal which it forms thereon.
  • at least one parametric noise emitter (6) which emits the modulated ultrasonic signal coming from the parametric noise generator (5) in the target direction to the outer environment.
  • the inventive external noise emission system (1) comprises an electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data; camera (3) which continuously records images and sends the recorded images to the electronic control unit (2) and which is preferably position behind, front and on sides of the vehicle; a can-bus (4) which is adapted to transmit the speed and gas pedal position information of the vehicle to the electronic control unit (2), parametric noise generator (5) which modulates the artificial noise (audio) signal it receives from the electronic control unit (2) on the carrier ultrasonic signal which it forms within itself; parametric noise emitter (6) which emits the modulated ultrasonic signal coming from the parametric noise generator (5) in the target direction to the outer environment and which is preferably positioned on left, right and middle part of the vehicle.
  • an electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data
  • camera (3) which continuously records images and sends the recorded images to the electronic control unit (2) and which is preferably position behind, front and on sides of the vehicle
  • the inventive external noise emission system (1) is activated at the moment when the vehicle is operated.
  • the camera (3) starts to record upon the operation of the vehicle, and starts to transmit the recorded images to the electronic control unit (2).
  • the electronic control unit (2) detects whether there are pedestrians to be warned in movement direction of the vehicle. When a pedestrian is detected, electronic control unit (2) generates noise signal which generates variant noise perception created by the internal combustion engine in directly proportional with the speed and cycle information of the vehicle which will enable the pedestrian to perceive the vehicle speed correctly according to the speed and gas pedal position information of the vehicle which it receives through the can-bus (4). For this reason, noise signals have different frequency content in every speed and total noise level.
  • the noise signal which is generated is sent to the parametric noise generator (5) and it is embedded into the ultrasonic noise signal which is generated here.
  • This mixed signal is amplified with the amplifier provided in the parametric noise generator (5) structure.
  • In bumper area of the vehicle there are preferably three parametric noise emitters (6) are placed such that one of them will emit noise to the left in movement direction of the vehicle, one of them will emit noise to the right in movement direction of the vehicle, and the other will emit noise parallel to the movement direction.
  • Electronic control unit (2) determines which parametric noise emitter (6) should operate in order to warn the pedestrian detected by the camera (3), and the mixed signal generated in the parametric noise generator (5) is sent to the this emitter.
  • the parametric noise emitter (6) provided on the inventive external noise emission system (1 ) is an ultrasonic emitter, it emits ultrasonic signal carrying the artificial noise (audio) signal thereon to the outer environment in target direction.
  • the directivity feature of the ultrasonic signal coming out of the parametric noi se emitter (6) is high.
  • the mixed signal emitted to the outer environment is demodulated with non-linear property of the air, and the ultrasonic signal and artificial noise audio signal are separated when there is an object blocking its way. Since the ultrasonic noise will be below hearing frequency range, the target pedestrian at risk is enabled to only hear the artificial noise audio signal. In areas out of the targeted pedestrian, the noise will not be heard and there will not be noise pollution.
  • the parametric noise emitter (6) provided on the inventive external noise emission system is comprised of a plurality of combined transducers.
  • the number of transducers can be changed in order to influence how far the warning signal can be sent by the parametric noise emitter (6).

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Traffic Control Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to an external noise emission system (1) which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety.

Description

AN EXTERNAL NOISE EMISSION SYSTEM DESCRIPTION
Field of the Invention
The present invention relates to an external noise emission system which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety.
Background of the Invention In applications known in the state of the art, the noise mitted by the vehicles driven with electric motor to the outer environment is at very low level relative to the internal combustion engines. This situation poses risk for the safety of pedestrians and bikers. Pedestrians and bikers ca be late to realize an approaching electric vehicle, and they can move in front of the vehicle.
Great Britain Patent Document no GB2497642, an application known in the state of the art, discloses a system which generates an artificial noise formed via the vehicles having a computer program for carrying out the invented method, and a device for generating artificial driving noises for a motor vehicle. In this system, environmental conditions, object and/or other road users in-vehicle information are formed in a certain way; a mechanism generating an artificial noise is disclosed by gathering all data depending on driving via an environmental sensor unit. German Patent Document no DE102009057683A1 , an application known in the state of the art, discloses a system which is used while driving and warns other users on the road (pedestrian-biker etc.). There is mechanism in this system which detects other elements on the road, and a warning system is disclosed in this system which is formed considering the movement of the vehicle, the speed and movement of other users. In order to avoid unnecessary noise generation in the system, it is aimed to transmit directly to the road user which can be in danger. By this means hybrid or electric vehicle which moves without noise under normal conditions keep being quieter than the gasoline-powered vehicles, it activates warning noise or signal only to warn a road user (pedestrian or biker etc.) who is in danger.
International Patent Document no WO2012059285, an application known in the state of the art, discloses a system which detects the elements on the road placed in the vehicles and warns the elements accordingly in order to avoid accidents that can ocur due to low-noise driving of electrical vehicles. It is aimed to warn the elements in danger via engine noise or another noise, and make the elements recognize the approaching vehicle.
United States Patent Document no US20120179280, an application known in the state of the art, discloses a warning system which can be used for electrical or hybrid vehicles.
Summary of the Invention
The objective of the present invention is to provide an external noise emission system which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety. Detailed Description of the Invention An external noise emission system developed to fulfill the objective of the present invention is illustrated in the accompanying figure, in which:
Figure 1 is the schematic view of an external noise emission system.
The components shown in the figures are each given reference numbers as follows:
1. External noise emission system
2. Electronic control unit
3. Camera
4. Can-bus
5. Parametric noise generator
6. Parametric noise emitter
An external noise emission system (1), which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety, essentially comprises
at least one electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data,
at least one camera (3) which continuously records images and sends the recorded images to the electronic control unit (2),
- at least one can-bus (4) which is adapted to transmit the speed and gas pedal position information of the vehicle to the electronic control unit (2), at least one parametric noise generator (5) which modulates the artificial noise (audio) signal it receives from the electronic control unit (2) on the carrier ultrasonic signal which it forms thereon. at least one parametric noise emitter (6) which emits the modulated ultrasonic signal coming from the parametric noise generator (5) in the target direction to the outer environment. In a preferred embodiment of the invention, the inventive external noise emission system (1) comprises an electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data; camera (3) which continuously records images and sends the recorded images to the electronic control unit (2) and which is preferably position behind, front and on sides of the vehicle; a can-bus (4) which is adapted to transmit the speed and gas pedal position information of the vehicle to the electronic control unit (2), parametric noise generator (5) which modulates the artificial noise (audio) signal it receives from the electronic control unit (2) on the carrier ultrasonic signal which it forms within itself; parametric noise emitter (6) which emits the modulated ultrasonic signal coming from the parametric noise generator (5) in the target direction to the outer environment and which is preferably positioned on left, right and middle part of the vehicle. in a preferred embodiment of the invention, the inventive external noise emission system (1) is activated at the moment when the vehicle is operated. The camera (3) starts to record upon the operation of the vehicle, and starts to transmit the recorded images to the electronic control unit (2). The electronic control unit (2) detects whether there are pedestrians to be warned in movement direction of the vehicle. When a pedestrian is detected, electronic control unit (2) generates noise signal which generates variant noise perception created by the internal combustion engine in directly proportional with the speed and cycle information of the vehicle which will enable the pedestrian to perceive the vehicle speed correctly according to the speed and gas pedal position information of the vehicle which it receives through the can-bus (4). For this reason, noise signals have different frequency content in every speed and total noise level. The noise signal which is generated is sent to the parametric noise generator (5) and it is embedded into the ultrasonic noise signal which is generated here. This mixed signal is amplified with the amplifier provided in the parametric noise generator (5) structure. In bumper area of the vehicle, there are preferably three parametric noise emitters (6) are placed such that one of them will emit noise to the left in movement direction of the vehicle, one of them will emit noise to the right in movement direction of the vehicle, and the other will emit noise parallel to the movement direction. Electronic control unit (2) determines which parametric noise emitter (6) should operate in order to warn the pedestrian detected by the camera (3), and the mixed signal generated in the parametric noise generator (5) is sent to the this emitter.
In a preferred embodiment of the invention, the parametric noise emitter (6) provided on the inventive external noise emission system (1 ) is an ultrasonic emitter, it emits ultrasonic signal carrying the artificial noise (audio) signal thereon to the outer environment in target direction. The directivity feature of the ultrasonic signal coming out of the parametric noi se emitter (6) is high. The mixed signal emitted to the outer environment is demodulated with non-linear property of the air, and the ultrasonic signal and artificial noise audio signal are separated when there is an object blocking its way. Since the ultrasonic noise will be below hearing frequency range, the target pedestrian at risk is enabled to only hear the artificial noise audio signal. In areas out of the targeted pedestrian, the noise will not be heard and there will not be noise pollution.
In a preferred embodiment of the invention, the parametric noise emitter (6) provided on the inventive external noise emission system is comprised of a plurality of combined transducers. The number of transducers can be changed in order to influence how far the warning signal can be sent by the parametric noise emitter (6).

Claims

I. An external noise emission system ( 1), which enables the safety of the pedestrians by means of electric vehicles the noise level emitted to environment of which is low emitting artificial noise to a determined and limited area in movement direction of the vehicle which poses a risk in terms of pedestrian safety, essentially characterized by
at least one electronic control unit (2) which is adapted to receive and process data, and generate and transmit artificial noise signal according to the processed data,
at least one camera (3) which continuously records images and sends the recorded images to the electronic control unit (2),
at least one can-bus (4) which is adapted to transmit the speed and gas pedal position information of the vehicle to the electronic control unit (2), at least one parametric noise generator (5) which modulates the artificial noise
(audio) signal it receives from the electronic control unit (2) on the carrier ultrasonic signal which it forms thereon,
at least one parametric noise emitter (6) which emits the modulated ultrasonic signal coming from the parametric noise generator (5) in the target direction to the outer environment.
2. An external noise emission system ( 1) according to claim 1 , characterized by camera (3) which starts to record images upon the operation of the vehicle and starts to transmit the recorded images to the electronic control unit (2).
3. An external noise emission system (1) according to claim 1 , characterized by electronic control unit (2) which is located in movement direction of the vehicle and detects whether there are pedestrians to be warned.
4. An external noise emission system (1 ) according to claim 1, characterized by electronic control unit (2) which generates noise signal generating variant noise perception created by the internal combustion engine in directly proportional with the speed and cycle information of the vehicle which will enable the pedestrian to perceive the vehicle speed correctly according to the speed and gas pedal position information of the vehicle which it receives through the can-bus (4) when a pedestrian is detected.
An external noise emission system (1) according to claim 1 , characterized by parametric noise generator (5) which enables the signals to be amplified with an amplifier that is provided in its structure.
An external noise emission system (1 ) according to claim 1, characterized by preferably three parametric noise emitters (6) which are placed such that one of them will emit noise to the left in movement direction of the vehicle, one of them will emit noise to the right in movement direction of the vehicle, and the other will emit noise parallel to the movement direction, in bumper area of the vehicle.
An external noise emission system (1) according to claim 1, characterized by electronic control unit (2) which determines which parametric noise emitter (6) should operate in order to warn the pedestrian detected by the camera (3), and enables the mixed signal generated in the parametric noise generator (5) to be sent to the this emitter.
An external noise emission system (1 ) according to claim 1 , characterized by parametric noise emitter (6) which is an ultrasonic emitter.
.An external noise emission system (1) according to claim 1 , characterized by parametric noise emitter (6) which enables the directhdty property of the ultrasonic signal to be high.
An external noise emission system (1 ) according to claim 1, characterized by parametric noise emitter (6) which enables the noise not to be heard in areas out of the targeted pedestrian and noise pollution not to be created. An external noise emission system ( 1 ) according to claim \, characterized by parametric noise emitter (6) which is comprised of a plurality of combined transducers and the number of transducers in its structure can be changed in order to influence how far it ca send the warning signal.
EP15733559.7A 2014-05-29 2015-05-22 An external noise emission system Withdrawn EP3148844A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201406102 2014-05-29
PCT/TR2015/000229 WO2015183224A1 (en) 2014-05-29 2015-05-22 An external noise emission system

Publications (1)

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EP3148844A1 true EP3148844A1 (en) 2017-04-05

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Country Status (2)

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EP (1) EP3148844A1 (en)
WO (1) WO2015183224A1 (en)

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JP2008258863A (en) * 2007-04-04 2008-10-23 Seiko Epson Corp On-board warning sound generation system and control method of on-board warning sound generation system
US20090066499A1 (en) * 2007-07-17 2009-03-12 Enhanced Vehicle Acoustics, Inc. External sound generating system and method
DE102009027911A1 (en) 2009-07-22 2011-01-27 Robert Bosch Gmbh Pedestrian warning system for an electric or hybrid vehicle
DE102009057683B4 (en) 2009-12-09 2023-05-11 Volkswagen Ag Method for warning a road user of an electric or hybrid vehicle and accordingly configured electric or hybrid vehicle
DE102010043212A1 (en) 2010-11-02 2012-05-03 Siemens Aktiengesellschaft Acoustic warning device for an electric vehicle
JP5287914B2 (en) * 2011-03-22 2013-09-11 株式会社デンソー Vehicle presence reporting device
DE102011121284A1 (en) 2011-12-15 2013-06-20 Gm Global Technology Operations, Llc Method and device for generating artificial driving noises of a motor vehicle, computer program
JP2014061786A (en) * 2012-09-21 2014-04-10 Sony Corp Movable body and program
DE102013210080A1 (en) * 2013-05-29 2014-12-04 Robert Bosch Gmbh Vehicle device and method for warning an object

Non-Patent Citations (1)

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Title
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