JP5754403B2 - 車両接近通報装置 - Google Patents
車両接近通報装置 Download PDFInfo
- Publication number
- JP5754403B2 JP5754403B2 JP2012073868A JP2012073868A JP5754403B2 JP 5754403 B2 JP5754403 B2 JP 5754403B2 JP 2012073868 A JP2012073868 A JP 2012073868A JP 2012073868 A JP2012073868 A JP 2012073868A JP 5754403 B2 JP5754403 B2 JP 5754403B2
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- JP
- Japan
- Prior art keywords
- power supply
- reference voltage
- voltage
- signal
- vehicle
- 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.)
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- 239000003990 capacitor Substances 0.000 claims description 30
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000000630 rising effect Effects 0.000 claims description 11
- 230000005236 sound signal Effects 0.000 claims description 10
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 101100112673 Rattus norvegicus Ccnd2 gene Proteins 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Description
また、制御部10には、車両の速度に応じた車速信号を出力する車速センサ(図示せず)より車速信号が入力されるようになっている。
2 スピーカ
10 制御部
10a CPU
10b DAC
11 LPF
12 基準電圧生成回路
12a、12b 抵抗
14 AMP
15 カップリングコンデンサ
16 コンデンサ
Claims (2)
- 車両に搭載されたスピーカ(2)から通報音を出力させることにより、前記車両の接近を通報する車両接近通報装置であって、
電源端子(Vt)に印加される電源電圧を複数の抵抗(12a、12b)で分圧した基準電圧(Vref)を生成する基準電圧生成回路(12)と、
発音信号を生成する発音信号生成部(10)と、
前記基準電圧と前記発音信号の差分電圧を増幅した信号を出力端子(OUT)より出力するパワーアンプ(14)と、
前記パワーアンプ(14)の前記出力端子(OUT)と前記スピーカ(2)との間に設けられたカップリングコンデンサ(15)と、を備え、
前記基準電圧を生成している前記複数の抵抗(12a、12b)の接続点と接地端子間には、前記電源端子への電力供給開始時における前記基準電圧の立ち上り時間を遅延させるためのコンデンサ(16)が設けられており、
前記発音信号生成部(10)は、CPU(10a)と、前記CPUから出力されるデータにより前記発音信号を生成するデジタルアナログコンバータ(10b)と、を備え、前記CPUから出力されるデータにより、前記電源端子への電力供給開始時における前記基準電圧と前記発音信号の電圧の差分電圧の変化量が予め定められた範囲内となるように前記発音信号を前記基準電圧と同レベルに立ち上げるように構成されていることを特徴とする車両接近通報装置。 - 前記電源端子(Vt)への電力供給開始時における前記基準電圧の立ち上がり時間は、最低可聴周波数に対応する値以上となっていることを特徴とする請求項1に記載の車両接近通報装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012073868A JP5754403B2 (ja) | 2012-03-28 | 2012-03-28 | 車両接近通報装置 |
US13/794,945 US9000900B2 (en) | 2012-03-28 | 2013-03-12 | Vehicle proximity annunciator device |
DE102013103010A DE102013103010A1 (de) | 2012-03-28 | 2013-03-25 | Fahrzeugannäherungsmeldevorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012073868A JP5754403B2 (ja) | 2012-03-28 | 2012-03-28 | 車両接近通報装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013203209A JP2013203209A (ja) | 2013-10-07 |
JP5754403B2 true JP5754403B2 (ja) | 2015-07-29 |
Family
ID=49234150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012073868A Active JP5754403B2 (ja) | 2012-03-28 | 2012-03-28 | 車両接近通報装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9000900B2 (ja) |
JP (1) | JP5754403B2 (ja) |
DE (1) | DE102013103010A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5772721B2 (ja) | 2012-05-24 | 2015-09-02 | アンデン株式会社 | 車両接近通報装置 |
JP2014065409A (ja) | 2012-09-26 | 2014-04-17 | Anden | 車両接近通報装置 |
JP6828505B2 (ja) * | 2017-02-23 | 2021-02-10 | アイシン精機株式会社 | 移動体用報知装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004304441A (ja) * | 2003-03-31 | 2004-10-28 | Sony Ericsson Mobilecommunications Japan Inc | 音声再生装置および基準電圧生成回路 |
JP4133716B2 (ja) * | 2003-09-29 | 2008-08-13 | 株式会社リコー | ポップ音低減回路 |
JP2006128909A (ja) * | 2004-10-27 | 2006-05-18 | Sony Corp | 電圧発生回路およびこれを用いたオーディオ信号処理装置 |
JP2011011662A (ja) * | 2009-07-03 | 2011-01-20 | Nbs Kk | 車接近警告装置 |
JP2011029683A (ja) * | 2009-07-21 | 2011-02-10 | Ricoh Co Ltd | オーディオアンプのポップ音低減回路とそれを具備したオーディオ回路 |
JP5375760B2 (ja) * | 2010-07-09 | 2013-12-25 | アンデン株式会社 | 車両用接近通報装置 |
JP5531939B2 (ja) | 2010-12-10 | 2014-06-25 | アンデン株式会社 | 車両接近通報装置 |
JP5298169B2 (ja) | 2011-07-27 | 2013-09-25 | アンデン株式会社 | 車両接近通報装置 |
-
2012
- 2012-03-28 JP JP2012073868A patent/JP5754403B2/ja active Active
-
2013
- 2013-03-12 US US13/794,945 patent/US9000900B2/en active Active
- 2013-03-25 DE DE102013103010A patent/DE102013103010A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
US20130257605A1 (en) | 2013-10-03 |
JP2013203209A (ja) | 2013-10-07 |
DE102013103010A1 (de) | 2013-10-31 |
US9000900B2 (en) | 2015-04-07 |
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