KR20130055970A - Method and avn system for guiding vehicle's running direction using right and left differentiation of sound volume - Google Patents

Method and avn system for guiding vehicle's running direction using right and left differentiation of sound volume Download PDF

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Publication number
KR20130055970A
KR20130055970A KR1020110121681A KR20110121681A KR20130055970A KR 20130055970 A KR20130055970 A KR 20130055970A KR 1020110121681 A KR1020110121681 A KR 1020110121681A KR 20110121681 A KR20110121681 A KR 20110121681A KR 20130055970 A KR20130055970 A KR 20130055970A
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KR
South Korea
Prior art keywords
unit
signal
guide
vehicle
audio signal
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Application number
KR1020110121681A
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Korean (ko)
Inventor
김낙현
Original Assignee
현대모비스 주식회사
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Priority to KR1020110121681A priority Critical patent/KR20130055970A/en
Publication of KR20130055970A publication Critical patent/KR20130055970A/en

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    • 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
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3626—Details of the output of route guidance instructions
    • G01C21/3629—Guidance using speech or audio output, e.g. text-to-speech
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

Abstract

The present invention provides a guide unit for outputting an audio signal of the announcement of the direction of travel of the vehicle; And an amplifier unit for amplifying the audio signal from the guide unit, wherein the amplifier unit amplifies the audio signal from the guide unit at a left / right volume ratio in proportion to the traveling direction of the vehicle. When determining the driving direction of the vehicle using the direction guidance AVN system, a guide broadcast having a different left / right volume ratio may be output by using the guide voice transmitted from the guide unit to the amplifier unit and the left / right volume ratio. Therefore, the time required for the driver to recognize the direction to proceed can be shortened and the driver can intuitively grasp and drive the vehicle in the correct direction to help the safe driving.

Description

ANN system and method for guiding vehicle's running direction through the differential volume of right and left volume

The present invention relates to a vehicle driving direction guidance AVN system and method, and more particularly to a vehicle driving direction guidance AVN system and method through the left and right differential volume of the AVN system of the vehicle.

1 is a block diagram of a conventional vehicle travel direction guidance AVN system.

The conventional vehicle travel direction guidance AVN system 100 includes a guide unit 110, an amplifier unit 120, and speaker units 130 and 132. The guide unit 110 transmits a guide voice for each situation to the amplifier unit 120, and the amplifier unit 120 amplifies the received guide voice at the same volume and transmits the guide voice to the speaker units 130 and 132. The speaker units 130 and 132 output guide voices received from the amplifier unit 120.

However, in the conventional vehicle driving direction guidance AVN system 100, since the guide voice is a mono audio signal having no left / right distinction, it is difficult for a driver to recognize a difference between left and right, so that the guide voice is output from the center of the vehicle. In addition, when a guide voice without a difference in left / right volume is output, it takes time because the driver listens to the voice and grasps the meaning of the word to determine the direction of the vehicle. There was a problem of confusing the direction of listening and recognizing the direction to actually proceed.

An object of the present invention is to provide a vehicle traveling direction guidance AVN system and method that can reduce the time required for the determination when the driver determines the driving direction of the vehicle and can be intuitively recognized by the left / right volume difference of the speaker. It is done.

According to an aspect of the present invention, a vehicle traveling direction guide AVN system includes: a guide unit configured to output an audio signal of a vehicle traveling direction guide broadcast; And an amplifier unit for amplifying the audio signal from the guide unit, wherein the amplifier unit amplifies the audio signal from the guide unit at a left / right volume ratio in proportion to the traveling direction of the vehicle.

According to another aspect of the present invention, there is provided a vehicle driving direction guide method, comprising: transmitting a guide voice and / or a left / right volume ratio to an amplifier unit from a guide unit which outputs an audio signal of a driving direction guide broadcast of a vehicle; And amplifying the guide voice received by the amplifier unit according to the left / right volume ratio.

According to the present invention, a guide broadcast having a different left / right volume ratio may be output by using the guide voice transmitted from the guide unit to the amplifier unit and the left / right volume ratio when determining the traveling direction of the vehicle. Therefore, the time required for the driver to recognize the direction to proceed can be shortened and the driver can intuitively grasp and drive the vehicle in the correct direction to help the safe driving.

1 is a block diagram of a conventional vehicle travel direction guide device.
2 is a block diagram of a vehicle driving direction guidance AVN system according to an embodiment of the present invention.
3 is a configuration diagram of an amplifier unit according to an embodiment of the present invention.
4 is a flow chart of a vehicle driving direction guidance method according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms " comprises, " and / or "comprising" refer to the presence or absence of one or more other components, steps, operations, and / Or additions.

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

2 is a block diagram of a vehicle driving direction guidance AVN system according to an embodiment of the present invention. The vehicle traveling direction guide AVN system 200 includes a guide unit 210, an amplifier unit 220, and speaker units 230 and 232. The guide unit 210 outputs an audio signal of a guide broadcast of the vehicle traveling direction. The amplifier 220 amplifies the audio signal received from the guide 210. The speaker units 230 and 232 output audio signals received from the amplifier unit 220.

This will be described in more detail as follows.

The guide unit 210 outputs an audio signal of the vehicle's driving direction announcement broadcast signal, which is a mono audio signal having no left / right distinction. The guide unit 210 transmits a control signal including a mono audio signal and a left / right volume ratio to the amplifier unit 220. The amplifier unit 220 amplifies the received mono audio signal at a left / right volume ratio in proportion to the direction in which the vehicle travels and transmits the mono audio signal to the speaker units 230 and 232. The speaker units 230 and 232 output the mono audio signal from the received amplifier unit 220 according to the left / right volume ratio.

For example, when a 'turn left' announcement is issued when turning left, the left / right volume ratio is 80:20, so the left side is relatively loud and the driver can intuitively recognize that he needs to turn left. U-Turn (Left) When the 'U-Turn Left' announcement comes out, the left / right volume ratio is 90:10, so the left side is relatively loud and the driver can intuitively know that the U-turn should be left. In addition, when the left turn to 2 o'clock direction 'turn left' announcements appear, the left / right volume ratio is 70:30, the driver can intuitively know that you need to turn left to the left 2 o'clock. And when the 'go straight' announcement when going straight to the left / right volume ratio is 50:50, the driver can intuitively know that you must go straight without confusion about left or right. As another embodiment of the present invention, the left / right volume ratio in the right 2 o'clock direction is 30:70, the left / right volume ratio in the right turn is 20:80, and the U-turn (right) left / right volume ratio is 10:90. Can be. A typical pure amplifier uses a mono audio signal and a control signal including a left / right volume ratio when amplifying an audio signal. Thus, a control signal including a left / right volume ratio without software addition is modified through software modification. It's simple to implement.

According to another embodiment of the present invention, the guide unit 210 may further include a storage unit 212. In this case, the guide broadcast voice information stored in the guide unit 210 is stored in the storage unit 212 as a stereo audio signal separately left and right. The amplifier unit 220 amplifies the stereo audio signal stored in the storage unit 212 independently from left and right and transmits the same to the speaker units 230 and 232. The speaker units 230 and 232 output guide voices corresponding to the stereo audio signals received from the amplifier unit 220.

3 is a configuration diagram of an amplifier unit according to an embodiment of the present invention.

The amplifier 220 includes a signal processor 222, a microcomputer 224, a digital signal processor 226, an impedance measuring unit 228, and a resistor 229.

The signal processor 222 generates and amplifies the received audio signal as a PWM signal and extracts the audio signal by power amplifying the PWM signal. The impedance measuring unit 228 connects the resistance element 229 between the signal processor 222 and the speaker unit 230 and detects a voltage value applied between the resistance element 229 and the speaker unit 230. When the speaker unit 230 is connected, the microcomputer 224 generates an arbitrary pulse signal having a predetermined period to the signal processing unit 222 so that the microcomputer 224 of the speaker unit 230 based on the voltage value detected by the impedance measuring unit 228. The impedance is determined, a variable DC voltage is applied to the signal processor 222 according to the impedance to control power amplification of the PWM signal, and a volume level control signal corresponding to the impedance is output. The digital signal processor 226 adjusts the audio volume according to the volume level control signal output from the microcomputer 224.

Therefore, the amplifier unit 226 may effectively measure the impedance of the speaker unit 230 by making the best use of the characteristics of the digital amplifier and output the optimum sound according to the volume level control signal corresponding to the impedance.

4 is a flowchart illustrating a vehicle driving direction guidance method according to an embodiment of the present invention.

First, the guide unit 210 transmits the guide voice and / or the left / right volume ratio to the amplifier unit 220 (S410). In this case, at least one of analog audio signal, S / PIDF signal, I2S signal, and MOST network may be used for guide voice, and at least one of CAN communication, UART communication, I2C communication, and LIN communication may be used for left / right volume ratio. have.

Next, the amplifier unit 226 amplifies the guide voice received from the guide unit 210 according to the left / right volume ratio (S420). In this case, the amplification may be performed at a left / right volume ratio in proportion to the direction in which the vehicle is going left / right.

Next, the speaker units 230 and 232 output the guide voice received from the amplifier unit 220 according to the left / right volume ratio.

For example, when a 'turn left' announcement is issued when turning left, the left / right volume ratio is 80:20, so the left side is relatively loud and the driver can intuitively recognize that he needs to turn left. U-Turn (Left) When the 'U-Turn Left' announcement comes out, the left / right volume ratio is 90:10, so the left side is relatively loud and the driver can intuitively know that the U-turn should be left. In addition, when the left turn to 2 o'clock direction 'turn left' announcements appear, the left / right volume ratio is 70:30, the driver can intuitively know that you need to turn left to the left 2 o'clock. And when the 'go straight' announcement when going straight to the left / right volume ratio is 50:50, the driver can intuitively know that you must go straight without confusion about left or right. As another embodiment of the present invention, the left / right volume ratio in the right 2 o'clock direction may be 30:70, the left / right volume ratio in the right turn may be 20:80, and the U / R (right) left / right volume ratio may be 10:90. have.

A detailed description of a communication method for transmitting guide voice transmission and a left / right volume ratio is as follows. When the guide voice is transmitted from the guide unit 210 to the amplifier unit 220, at least one of an analog audio signal, an S / PIDF signal, an I2S signal, and a MOST network may be used.

Analog audio signals are sound signals that continuously change, such as voltage or current, unlike digital, which consists of signal systems of 0 and 1. Continuously changing signals like voice are analog. The analog approach can be implemented by adding a frequency signal or an amplitude signal to the medium wavelength of a given electromagnetic alternating frequency. In addition, analog means that a certain value is expressed or measured by using a continuously changing physical quantity, such as current or voltage, and analog is usually expressed by a sine curve.

S / PDIF signal stands for Sony / Philips Digital Interconnect Format and is a standard for transmitting digital audio signals. The S / PDIF signal transmits information using an optical cable or a coaxial cable. It is used to transmit noiselessly from various sound sources such as a DVD player to a speaker, and recently, a desktop computer also uses an S / PDIF terminal. S / PDIF has the advantage of transmitting 5.1 channel sound based on DTS and Dolby Digital as well as stereo.

I2S signal stands for Inter IC sound, a serial bus signal for CD players, digital TV sound, and digital audio devices. In the I2S signal, audio data is processed separately from a clock signal. The I2S signal consists of three serial bus lines, including a line for time division multiplexed data channels, a word select line, and a clock line. Since the I2S signal separates the audio data from the clock signal, the jitter prevention device is unnecessary because the time and errors causing jitter do not occur.

 MOST Network (Media Oriented Systems Transport) is an optical-based network protocol aimed at high performance multimedia networks. MOST networks are simple in structure, easy to design and maintain, and reduce wiring harness. In addition, the MOST network has the advantage of easy ring topology of devices and devices, and can simultaneously transmit various kinds of data such as audio, video, data packets and control signals.

The guide unit 210 may transmit a control signal including a left / right volume ratio to the amplifier unit 220 using at least one of CAN communication, UART communication, I2C communication, and LIN communication.

CAN communication is a communication network developed by Bosch for use in automotive electronics. The technical features of CAN communication include data sharing by connecting to multiple devices through one communication line, automatic processing of automatic collision detection and data retransmission, and priority among message IDs.

CAN communication has automatic retransmission when data transmission collision stops, the line is empty, up to 1 Mbps in terms of communication speed, and the number of communication data is 8 bytes, which is suitable for industrial / vehicle control devices. It is also built into the MCUs of many companies (eg Motorola, Philips, TI, Hitachi, Intel, etc.) and offers excellent compatibility.

UART (Universal Asynchronous Receiver Transmitter) is a parallel synchronous signal communication method that can increase the processing speed inside the computer. For example, when the electrical signal of 01001000 is processed through at least eight lines (buses) at once, parallel transmission works only at a short distance, so in order to transmit a long distance (more than a few meters), the transmitter must be converted into a serial transmission signal. The receiver of the receiving computer must be converted to a parallel signal. The chip used for this is the Universal Asynchronous Receiver Transmitter (UART). The predominantly used Intel microprocessor chip number is 8250 or 16550. The UART receives parallel data bits and converts them into serial serial bits. The opposite UART converts the transmission information in reverse to increase the data transmission speed between nodes in network communication.

I2C communication (I-square-C I-square city) is a communication method proposed by Philips called Inter-IC. Unlike parallel buses, called local buses, I2C communication is a two-way serial bus that allows peripheral devices to operate by connecting only two signal lines. Philips proposed I2C communications 20 years ago for mass-produced products such as TVs, VCRs and audio equipment, and now I2C communications has become the standard communication method for controlling the internal devices of a product. I2C communication includes three data transfer modes depending on the speed: standard, high speed and ultra high speed. Standard mode supports 100 Kbps, high speed 400 Kbps and ultra fast mode up to 3.4 Mbps. I2C communication has the advantage of assigning 7-bit and 10-bit addresses to each device to allow independent access to multiple devices and compatibility between transmission modes.

Local Interconnect Network (LIN) communication is a communications network that establishes low-cost, low-end multiplexed communications in automotive networks. CAN solves the requirements of high bandwidth, advanced error handling networks, but it is expensive to implement simple functions such as power windows and seat adjusters in CAN. LIN provides efficient communication for applications that do not require the bandwidth and complexity of CAN. LIN communications can be implemented relatively inexpensively by using a standard serial universal asynchronous transmitter / receiver (UART) built into most modern low-cost 8-bit microcontrollers.

According to the present invention, a guide broadcast having a different left / right volume ratio may be output by using the guide voice transmitted from the guide unit to the amplifier unit and the left / right volume ratio when determining the traveling direction of the vehicle. Therefore, the time required for the driver to recognize the direction to proceed can be shortened and the driver can intuitively grasp and drive the vehicle in the correct direction to help the safe driving.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention, but are intended to be illustrative, and the scope of the present invention is not limited by these embodiments. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents, which fall within the scope of the present invention as claimed.

Claims (6)

A guide unit configured to output an audio signal of a vehicle guide direction broadcast; And
An amplifier unit for amplifying the audio signal from the guide unit,
The amplifier unit amplifies the audio signal from the guide unit at a left / right volume ratio in proportion to the traveling direction of the vehicle
Vehicle navigation direction guidance AVN system, characterized in that.
The method of claim 1,
The guide unit may include a storage unit capable of storing the mono audio signal as a stereo audio signal independent of left and right sides.
The amplifier unit amplifies the stereo audio signal stored in the storage unit independently of the left and right;
Vehicle navigation direction guidance AVN system, characterized in that.
The apparatus of claim 1, further comprising a speaker unit configured to output an audio signal received from the amplifier unit.
The amplifier unit
A signal processor which generates the audio signal as a PWM signal and extracts the audio signal by power amplifying the PWM signal;
An impedance measuring unit connecting a resistance element between the signal processing unit and the speaker unit to detect a voltage value applied between the resistance element and the speaker unit;
When the speaker unit is connected, an arbitrary pulse signal having a predetermined period is generated in the signal processor to determine an impedance of the speaker based on the voltage value detected by the impedance measuring unit, and a variable DC voltage is applied to the signal processor in accordance with the impedance. A microcomputer that applies power to control power amplification of the PWM signal and outputs a volume level control signal corresponding to the impedance thereof; And
Digital signal processor to adjust the audio volume according to the volume level control signal output from the microcomputer
Vehicle navigation direction guidance AVN system comprising a.
Transmitting a guide voice and / or a left / right volume ratio to the amplifier unit by a guide unit which outputs an audio signal of a vehicle guide signal; And
Amplifying the guide voice received by the amplifier unit according to the left / right volume ratio
Vehicle progress direction guidance method comprising a.
5. The method of claim 4,
The step of transmitting the guide voice and / or left / right volume ratio in the guide unit
The guide voice uses at least one of an analog audio signal, an SPDIF signal, an I2S signal, and a MOST network, and the left / right volume ratio uses at least one of CAN communication, UART communication, I2C communication, and LIN communication.
Vehicle driving direction guidance method characterized in that.
5. The method of claim 4,
Amplifying the guide voice to the left / right volume ratio in the amplifier unit
Amplifying at a left / right volume ratio proportional to the left / right traveling direction of the vehicle
Vehicle driving direction guidance method characterized in that.
KR1020110121681A 2011-11-21 2011-11-21 Method and avn system for guiding vehicle's running direction using right and left differentiation of sound volume KR20130055970A (en)

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KR1020110121681A KR20130055970A (en) 2011-11-21 2011-11-21 Method and avn system for guiding vehicle's running direction using right and left differentiation of sound volume

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KR1020110121681A KR20130055970A (en) 2011-11-21 2011-11-21 Method and avn system for guiding vehicle's running direction using right and left differentiation of sound volume

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9525387B2 (en) 2013-12-18 2016-12-20 Hyundai Motor Company Amplifier docking audio system for vehicle
CN110146095A (en) * 2019-05-23 2019-08-20 北京百度网讯科技有限公司 The method and apparatus of visually impaired people's navigation, electronic equipment, computer-readable medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9525387B2 (en) 2013-12-18 2016-12-20 Hyundai Motor Company Amplifier docking audio system for vehicle
CN110146095A (en) * 2019-05-23 2019-08-20 北京百度网讯科技有限公司 The method and apparatus of visually impaired people's navigation, electronic equipment, computer-readable medium

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