JP3625073B2 - Alarm sound device for electric vehicle and electric vehicle - Google Patents

Alarm sound device for electric vehicle and electric vehicle Download PDF

Info

Publication number
JP3625073B2
JP3625073B2 JP12712394A JP12712394A JP3625073B2 JP 3625073 B2 JP3625073 B2 JP 3625073B2 JP 12712394 A JP12712394 A JP 12712394A JP 12712394 A JP12712394 A JP 12712394A JP 3625073 B2 JP3625073 B2 JP 3625073B2
Authority
JP
Japan
Prior art keywords
sound
vehicle body
speaker
vehicle
driving state
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.)
Expired - Lifetime
Application number
JP12712394A
Other languages
Japanese (ja)
Other versions
JPH07322403A (en
Inventor
修 前田
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP12712394A priority Critical patent/JP3625073B2/en
Publication of JPH07322403A publication Critical patent/JPH07322403A/en
Application granted granted Critical
Publication of JP3625073B2 publication Critical patent/JP3625073B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は、電気車両が走行するときに警報音を発生させる電気車両の警報音装置に関するものである。
【０００２】
【従来の技術】
従来、警報音を発生させながら走行する電気車両としては、例えば工場内で使用される電動フォークリフトや電動搬送車等がある。この種の電気車両に搭載された警報音装置は、車両の走行状態や運転状態には無関係に常に同じ音色の単調な警報音を発生させる構造になっていた。また、この警報音装置は、警報音の音量が周囲環境に関係なく一定であり、しかも、警報音が電気車両を中心として周囲に放射状に伝播されるように構成されていた。
【０００３】
【発明が解決しようとする課題】
しかるに、このように警報音として常に同じ音色の単調な音を発生させるのでは、電気車両の運転状態は歩行者に知らせることはできない。詳述すると、電気車両の走行速度、加減速、前後あるいは左右の走行方向などは、警報音が大きくなったり小さくなったりするのを歩行者が聞き分けて認識しなければならない。
【０００４】
また、警報音が電気車両の周囲全域にわたって伝播されてしまうので、電気車両の進行方向以外に位置する歩行者にとっては聞かずに済む音まで聞こえてしまう。すなわち、騒音問題も生じていた。
【０００５】
さらに、電気車両は内燃機関式車両に較べて走行音がきわめて小さいため、走行中に運転者が運転状態を知るには、運転者に加わる慣性力や速度計等の計器類に頼らざるを得ない。
【０００６】
本発明はこのような問題点を解消するためになされたもので、電気車両の運転状態を音によって歩行者や運転者に知らせることができるようにすることを目的とする。
【０００７】
【課題を解決するための手段】
本発明に係る電気車両の警報音装置は、音の伝播方向が車体外方に向けられたスピーカと、車体の運転状態を検出する運転状態検出装置と、この運転状態検出装置が検出した運転状態に応じて前記スピーカの駆動を制御する制御装置とを備え、この制御装置を、車体が走行可能状態になっているときには走行中、停止中共に常に前記スピーカによって警報音を発生させ、運転状態が変化したときに変化量に応じて前記音の音量あるいは及び音質を変化させる構成としてなり、前記スピーカを、音の伝播方向を車体の前方と後方とに向けて車体に複数取付け、かつ運転状態検出装置を車体の進行方向が前後何れであるかを検出する構成とし、制御装置を、前記音の伝播方向が異なる２種類のスピーカでの音量あるいは及び音質を車体の進行方向に応じて変える構成としたものである。
【０００８】
請求項２に記載した発明に係る電気車両の警報装置は、音の伝播方向が車体外方に向けられたスピーカと、車体の運転状態を検出する運転状態検出装置と、この運転状態検出装置が検出した運転状態に応じて前記スピーカの駆動を制御する制御装置とを備え、この制御装置を、車体が走行可能状態になっているときには走行中、停止中共に常に前記スピーカによって警報音を発生させ、運転状態が変化したときに変化量に応じて前記音の音量あるいは及び音質を変化させる構成としてなり、前記スピーカを、音の伝播方向を車体の左前方と右前方とに向けて車体に複数取付け、かつ運転状態検出装置を車体の進行方向が左右何れであるかを検出する構成とし、制御装置を、前記音の伝播方向が異なる２種類のスピーカでの音量あるいは及び音質を車体の進行方向に応じて変える構成としたものである。
【０００９】
請求項３に記載した発明に係る電気車両の警報装置は、請求項１または請求項２に記載した発明に係る電気車両の警報音装置において、制御装置がスピーカでの音質を変えるときには、音の伝播方向が車体の進行方向前方と一致するスピーカから発生する音の高周波成分を他のスピーカより大きくするものである。
請求項４に記載した発明に係る電気車両は、請求項１ないし請求項６のうちいずれか一つに記載した発明に係る警報音装置を有するものである。
【００１０】
【作用】
本発明によれば、歩行者はスピーカから生じる警報音の音質を聞き分けることによって電気車両の運転状態や走行方向を認識する。
【００１１】
【実施例】
以下、本発明の一実施例を図１ないし図６によって詳細に説明する。
図１は本発明に係る電気車両の警報音装置の概略構成を示す側面図、図２はスピーカの配置を示す平面図、図３は本発明に係る電気車両の警報音装置の構成を示すブロック図である。図４は運転状態に応じて音量が変化する様子を示すグラフ、図５は制動力に応じて音の周波数分布や音量が変化する様子を示すグラフ、図６は車速あるいは負荷に応じて音の周波数分布や音量が変化する様子を示すグラフである。
【００１２】
これらの図において、１は電気車両としての電動式４輪車で、この電動式４輪車は不図示のモータ式動力ユニットによって車輪を回転させて走行する構成になっている。また、この電動式４輪車１は、不図示の走行スイッチがＯＮ操作された状態でアクセルペダル２を踏むことによって走行を開始し、このアクセルペダル２の踏み込み量を変えることによって速度を増減させることができる構造になっている。アクセルペダル２を大きく踏む込むと高速で走行し、踏み込み量が少ないときには低速で走行するようになっている。
【００１３】
さらに、ブレーキペダル３を踏むことによって不図示の制動装置が作動して車体が停止するように構成されている。このブレーキペダル３を大きく踏み込むと制動装置での制動力が大きくなり、踏み込み量が少ないと制動力が少なくなるようになっている。
【００１４】
４は操向ハンドルで、この操向ハンドル４を左右に回すことによって前輪１ａが左右に転舵され、車体の進行方向を左右に変えることができるように構成されている。また、この電動式４輪車１は前進と後進を切り換える前後進切換えスイッチ（図示せず）が設けられており、この前後進切換えスイッチを操作することによって図１中に矢印Ｆで示す前方と、これとは反対の後方とに進行方向を変えることができる構造になっている。
【００１５】
５は本発明に係る警報音装置で、この警報音装置５は図３に示すように、車体の運転状態を検出するための各種検出装置６〜１１と、これらの検出装置からの信号に応じて後述する各スピーカの駆動を制御する警報音制御装置１２と、この警報音制御装置１２に接続された車外向けスピーカ用アンプ１３、車室内スピーカ用アンプ１４および音源装置１５と、車体に取付けられた各種スピーカ１６〜２０等によって構成されている。
【００１６】
これらのスピーカ１６〜２０は何れも音の伝播方向に指向性を有するものが採用され、図２に示すように、スピーカ１６は車体最前部に音の伝播方向を車体前方へ向けて取付けられ、スピーカ１７は車体最後部に音の伝播方向を車体後方へ向けて取付けられている。また、スピーカ１８は車体左前部に音の伝播方向を車体左前方へ向けて取付けられ、スピーカ１９は車体右前部に音の伝播方向を車体右前方へ向けて取付けられている。スピーカ２０は運転者（図示せず）が着座する車室２１内に音の伝播方向を運転者へ向けて取付けられている。
【００１７】
前記各種検出装置６〜１１のうち負荷検出装置６は、アクセルペダル２の踏み込み量からモータ式動力ユニットでの負荷を検出し、負荷信号を警報音制御装置１２に出力する構造になっている。車速検出装置７は前輪１ａの回転から車体が前後の何れの方向に進んでいるかということと、車速とを検出し、前後方向判別信号と車速信号とを警報音制御装置１２に出力する構造になっている。
【００１８】
制動力検出装置８は、ブレーキペダル３の踏み込み量から制動装置での制動力を検出し、制動力信号を警報音制御装置１２に出力する構造になっている。周囲騒音検出装置９は、騒音センサを構成する騒音検出マイクであり、車体後部に取付けられ、周囲騒音信号を警報音制御装置１２に出力する構造になっている。
【００１９】
車内音量調整装置１０は、スピーカ２０での音量を調整するためのもので、車室２１内における運転席の近傍に配置されている。操舵角検出装置１１は前輪１ａの操舵方向が左右何れであるかということと、操舵角度が何度であるかということとを検出して左右方向判別信号および操舵角信号を警報音制御装置１２に出力する構造になっている。
【００２０】
警報音制御装置１２は、上述した各種検出装置から入力された信号に基づいて予め記憶されたマップデータを読み出し、警報音の基本的な音質を決定する。この音質とは、主に音の周波数分布のことであり、さらに音程、テンポのことでもある。そして、車体の進行方向に応じて駆動するスピーカを決定して車外向けスピーカ用アンプ１３に警報音の音量を制御する音量信号を駆動スピーカ毎に送出すると共に、車室内スピーカ用アンプ１４に警報音の音量を制御する音量信号を送出する。これと共に、警報音制御装置１２は車体の運転状態に対応させて主に音の周波数分布状態をあるいは音程、テンポを制御するための制御信号を音源装置１５に送出する。この音源装置１５は制御信号に応じて予め記憶してある音の波形データを読み出し、音圧波形に相当する電圧信号を前記スピーカ用アンプ１３，１４に出力する。
【００２１】
スピーカ用アンプ１３，１４は、警報音制御装置１２から入力された音量信号と音源装置１５から入力された電圧信号に基づいて駆動電流をスピーカに流してこれを駆動する。すなわち、車外に向けられたスピーカ１６〜１９のうち警報音制御装置１２によって指定されたものと、車室内のスピーカ２０が警報音を発生することになる。
【００２２】
なお、この警報音制御装置１２は、電動式４輪車１が走行可能な状態になっているときには走行中、停止中共に常に前記両アンプ１３，１４に信号を出力し、スピーカによって警報音を発生させるように構成されている。車体が停止しているときは、前後進切換えスイッチによって設定されている方向を指向するスピーカと、車室内のスピーカ２０とが駆動される。すなわち、前進状態で車体が停止しているときには前方を指向するスピーカ１６とスピーカ２０が駆動される。
【００２３】
この警報音制御装置１２が車体の進行方向を求めるに当たっては、車速検出装置７から入力された前後方向判別信号と、操舵角検出装置１１から入力された左右方向判別信号とを用いる。すなわち、車体が前進しているときにはスピーカ１６に対する音量信号をアンプ１３に出力し、後進しているときにはスピーカ１７に対する音量信号をアンプ１３に出力する。このように車体が前進あるいは後進しているときには、進行方向後方を向くスピーカは音量が０となるかあるいは進行方向前方を向くスピーカより音量が小さくなるように制御される。また、車体が左旋回を行っているときにはスピーカ１８に対する音量信号をアンプ１３に出力し、車体が右旋回を行っているときにはスピーカ１９に対する音量信号をアンプ１３に出力する。このように旋回を行うときには、旋回方向とは反対側を向くスピーカは音量が０となるように制御される。
【００２４】
さらに、各スピーカから生じる警報音の音量は、周囲騒音検出装置９によって検出された周囲の騒音より大きくなるように制御されると共に、負荷検出装置６、車速検出装置７、制動力検出装置８、操舵角検出装置１１によって検出された負荷量や車速、制動量、操舵角が大きくなるにしたがって増大するように制御される。このため、例えば車速が増大するときには、図４に示すように車速増加に伴って音量が増大するようになる。また、前進中に操向ハンドル４を左へ回したときにはスピーカ１６から車速に応じた音量の警報音が生じ、スピーカ１８から操舵角度に応じた音量の警報音が生じることになる。この場合には後方を向くスピーカ１７や右前方を向くスピーカ１９は駆動されない。さらに、制動力が大きくなると警報音の音量が増えるようになる。
【００２５】
前記音源装置１５によって設定される警報音の周波数分布あるいは音程、テンポは、制動力や車速、負荷量に応じて変更される。すなわち、図５に示すように、制動力が大きくなるにしたがってスピーカから生じる警報音の高周波数成分の比率を多くされる、あるいは音程の変化を大きくする、あるいはテンポを遅くする。すなわち、制動が急激に行われるにしたがって堅くあるいは緊張感が感じられるような警報音になる。また、図６に示すように、車速あるいは負荷量が大きくなるにしたがってスピーカから生じる警報音の低周波数成分の比率が多くされる。すなわち、車速あるいは負荷量が大きくなるにしたがって重く感じられるような警報音になる。
【００２６】
このように構成された警報音装置５を備えると、動力ユニットが走行可能状態にあるときには、車体の進行方向の前方に向けてスピーカ１６〜１９から警報音が放射されると共に、運転者に向けてスピーカ２０から警報音が放射される。そして、この警報音の音量は車速、操舵角、負荷量、制動力に応じて増減されることになる。
【００２７】
したがって、歩行者はスピーカ１６〜１９から生じる警報音の音量あるいは及び音質を聞き分けることによって電動式４輪車１の運転状態や走行方向を認識することができる。しかも、運転者も車室内のスピーカ２０から生じる警報音の音量あるいは及び音質を聞き分けることによって電動式４輪車１の運転状態を認識することができる。この車室内のスピーカ２０から生じる警報音の音量は、車内音量調整装置１０を調整することにより運転者が自由に増減させることができる。
【００２８】
また、車外に警報音を放射させるスピーカ１６〜１９は車体の進行方向と略一致するもののみが駆動されるので、進行方向以外を歩行している歩行者や車体の側方などに伝わる警報音はきわめて小さくなる。
【００２９】
なお、本実施例では車体の前部３箇所にスピーカ１６，１８，１９を取付けた例を示したが、左右にスピーカ１８，１９を設ける場合には、中央のスピーカ１６を不要とすることができる。このようにする場合には、左右のスピーカ１８，１９での出力バランスを操舵角度に対応させ、操舵角度が０度（車体が直進する角度）のときには左右両方のスピーカ１８，１９から等しい音量をもって警報音が発生するように構成する。すなわち、操向ハンドル４の回転に合わせて警報音の届く範囲が左右に移動するようになる。
【００３０】
また、本実施例では走行可能状態のときには車室内のスピーカ２０から常に警報音が生じる構成としたが、図７に示す構成を採れば必要に応じて運転者が車室内に放射される警報音を絶つことができるようになる。
【００３１】
図７は車室内スピーカを選択的に駆動することができるようにした他の例を示すブロック図で、同図において前記図１ないし図３で説明したものと同一もしくは同等部材については、同一符号を付し詳細な説明は省略する。図７において、符号３１は車室内音ＯＮ，ＯＦＦスイッチで、このスイッチ３１は車室内スピーカ用アンプと電源（バッテリ）３２との間に介装されている。また、車室内スピーカ用アンプ１４は、本実施例では車室内スピーカ２０での音量を調整するための可変抵抗が設けられている。３３は車体を走行させるための動力ユニットである。
【００３２】
このように構成すると、スイッチ３１をＯＦＦ状態とすることによって車室内スピーカ用アンプ１４への給電が絶たれるので、車室内スピーカ２０からは警報音が生じなくなる。また、前記スイッチ３１をＯＮ状態とした場合、車室内スピーカ用アンプ１４の可変抵抗を調整することによって、車室内スピーカ２０での音量を増減させることができる。
【００３３】
加えて、上述した各実施例では電動式４輪車に本発明を適用した例を示したが、本発明に係る警報音装置５は電動式自動二輪車にも適用することができる。
【００３４】
【発明の効果】
以上説明したように本発明に係る電気車両の警報音装置は、車体外方に音を放射させるスピーカを車体に取付けると共に、車体が運転可能状態にあるときに前記スピーカから音を発生させる構成とし、このスピーカから生じる音の音量あるいは及び音質を車体の運転状態に応じて変えるため、歩行者はスピーカから生じる警報音の音量あるいは音質あるいは両方を聞き分けることによって電気車両の速度、負荷や加減速状態を認識することができる。
【００３５】
このように構成する場合、警報音の音量を車体周囲の騒音より大きくするか音質を変化させると、電気車両の存在を確実に歩行者に知らせることができる。
【００３７】
さらに、上述したように歩行者に警報音を伝える構成を採りつつ車体の制動量、車速、負荷のうち少なくとも一つが大きくなるにしたがってスピーカの音量を増大させるようにすると、歩行者は電気車両の運転状態が変化しているのを瞬時に認識することができる。
【００３８】
さらにまた、上述したように歩行者に警報音を伝える構成を採りつつ電気車両での制動量が大きくなるにしたがって警報音の高周波数成分の比率を増大させる構成を採ると、歩行者は堅く感じられるような警報音によって急制動を認識することができる。
【００３９】
加えて、上述したように歩行者に警報音を伝える構成を採りつつ電気車両での車速あるいは負荷が大きくなるにしたがって警報音の低周波数成分の比率を増大させる構成を採ると、歩行者は重く感じられるような警報音によって車速や負荷が大きいことを認識することができる。
【００４０】
さらに本発明に係る電気車両の警報音装置は、車体外方に音を指向性をもって放射させるスピーカを車体に取付けると共に、車体が運転可能状態にあるときに前記スピーカから音を発生させる構成とし、このスピーカから生じる音の音量あるいは及び音質を車体の走行方向に応じて変えたため、歩行者はスピーカから生じる警報音の音質を聞き分けることによって電気車両の速度、負荷や加減速状態と共に走行方向をも認識することができる。
【００４１】
このような構成を採る場合、警報音を車体の走行方向に対応させて車体の前方、後方、左前方、右前方に分けて放射させることによって、歩行者は確実に走行方向を認識することができる。しかも、車外に警報音を放射させるスピーカは車体の進行方向と略一致するもののみが駆動されるので、進行方向以外を歩行している歩行者や車体の側方などに伝わる警報音はきわめて小さくなる。このため、騒音問題を引き起こすことがない。
【図面の簡単な説明】
【図１】本発明に係る電気車両の警報音装置の概略構成を示す側面図である。
【図２】スピーカの配置を示す平面図である。
【図３】本発明に係る電気車両の警報音装置の構成を示すブロック図である。
【図４】運転状態に応じて音量が変化する様子を示すグラフである。
【図５】制動力に応じて音の周波数分布や音量が変化する様子を示すグラフである。
【図６】車速あるいは負荷に応じて音の周波数分布や音量が変化する様子を示すグラフである。
【図７】車室内スピーカを選択的に駆動することができるようにした他の例を示すブロック図である。
【符号の説明】
１…電動式４輪車、５…警報音装置、６…負荷検出装置、７…車速検出装置、８…制動力検出装置、９…周囲騒音検出装置、１１…操舵角検出装置、１２…警報音制御装置、１３…車外向けスピーカ用アンプ、１４…車室内スピーカ用アンプ、１５…音源装置、１６〜２０…スピーカ。[0001]
[Industrial application fields]
The present invention relates to an alarm sound device for an electric vehicle that generates an alarm sound when the electric vehicle travels.
[0002]
[Prior art]
Conventionally, as an electric vehicle that travels while generating an alarm sound, for example, there are an electric forklift used in a factory, an electric conveyance vehicle, and the like. An alarm sound device mounted on this type of electric vehicle has a structure that always generates a monotonous alarm sound of the same tone regardless of the running state and driving state of the vehicle. Further, this alarm sound device is configured such that the volume of the alarm sound is constant regardless of the surrounding environment, and the alarm sound is propagated radially around the electric vehicle.
[0003]
[Problems to be solved by the invention]
However, it is impossible to notify the pedestrian of the driving state of the electric vehicle by always generating a monotonous sound of the same tone as the alarm sound. More specifically, pedestrians must recognize and recognize that the warning sound is louder or louder with respect to the traveling speed, acceleration / deceleration, front / rear or left / right traveling direction of the electric vehicle.
[0004]
Further, since the warning sound is propagated over the entire periphery of the electric vehicle, a sound that can be heard by pedestrians located outside the traveling direction of the electric vehicle can be heard. That is, noise problems also occurred.
[0005]
Furthermore, since electric vehicles have much lower running noise than internal combustion engine-type vehicles, the driver must rely on instruments such as inertial force applied to the driver and speedometers to know the driving state during driving. Absent.
[0006]
The present invention has been made to solve such problems, and it is an object of the present invention to notify a pedestrian or a driver of the driving state of an electric vehicle by sound.
[0007]
[Means for Solving the Problems]
An alarm sound device for an electric vehicle according to the present invention includes a speaker whose sound propagation direction is directed outward of the vehicle body, a driving state detection device that detects a driving state of the vehicle body, and a driving state detected by the driving state detection device. And a control device for controlling the driving of the speaker according to the control device. When the vehicle body is in a travelable state, the control device always generates an alarm sound by the speaker during traveling and when stopped. The volume or quality of the sound is changed according to the amount of change when it changes, and a plurality of the speakers are attached to the vehicle body with the sound propagation direction in front and rear of the vehicle body, and the driving state is detected. The device is configured to detect whether the traveling direction of the vehicle body is front and back, and the control device is configured to determine the volume or sound quality of the two types of speakers having different sound propagation directions as the traveling direction of the vehicle body. It is obtained by the configuration according to change.
[0008]
An alarm device for an electric vehicle according to a second aspect of the invention includes a speaker whose sound propagation direction is directed outward of the vehicle body, a driving state detection device that detects the driving state of the vehicle body, and the driving state detection device. And a control device that controls the driving of the speaker according to the detected driving state. When the vehicle body is in a travelable state, the control device always generates an alarm sound by the speaker during traveling and when stopped. The sound volume or the sound quality is changed according to the amount of change when the driving state changes, and a plurality of the speakers are arranged on the vehicle body with the sound propagation direction left front and right front of the vehicle body. And the driving state detection device is configured to detect whether the traveling direction of the vehicle body is left or right, and the control device is configured to adjust the volume and / or sound of two types of speakers having different sound propagation directions. The is obtained by a configuration varied depending on the vehicle traveling direction.
[0009]
According to a third aspect of the present invention, there is provided an alarm device for an electric vehicle according to the first or second aspect of the present invention. In the alarm sound device for an electric vehicle according to the first or second aspect, when the control device changes the sound quality of the speaker, The high frequency component of the sound generated from the speaker whose propagation direction coincides with the front of the vehicle body in the traveling direction is made larger than those of other speakers.
An electric vehicle according to a fourth aspect of the present invention has the alarm sound device according to the first aspect of the present invention.
[0010]
[Action]
According to the present invention, the pedestrian recognizes the driving state and the traveling direction of the electric vehicle by recognizing the sound quality of the alarm sound generated from the speaker .
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.
1 is a side view showing a schematic configuration of an alarm sound device for an electric vehicle according to the present invention, FIG. 2 is a plan view showing the arrangement of speakers, and FIG. 3 is a block diagram showing the configuration of the alarm sound device for an electric vehicle according to the present invention. FIG. 4 is a graph showing how the volume changes according to the driving state, FIG. 5 is a graph showing how the sound frequency distribution and volume change according to the braking force, and FIG. 6 is a graph showing how the sound changes according to the vehicle speed or load. It is a graph which shows a mode that frequency distribution and a sound volume change.
[0012]
In these drawings, reference numeral 1 denotes an electric four-wheeled vehicle as an electric vehicle, and this electric four-wheeled vehicle is configured to travel by rotating wheels by a motor-type power unit (not shown). The electric four-wheel vehicle 1 starts traveling by stepping on the accelerator pedal 2 in a state in which a travel switch (not shown) is turned on, and increases or decreases the speed by changing the depression amount of the accelerator pedal 2. It has a structure that can. When the accelerator pedal 2 is greatly depressed, the vehicle travels at a high speed, and when the amount of depression is small, the vehicle travels at a low speed.
[0013]
Furthermore, when the brake pedal 3 is depressed, a braking device (not shown) is activated and the vehicle body is stopped. When the brake pedal 3 is depressed greatly, the braking force in the braking device increases, and when the amount of depression is small, the braking force decreases.
[0014]
A steering handle 4 is configured so that the front wheel 1a is steered left and right by turning the steering handle 4 to the left and right to change the traveling direction of the vehicle body to the left and right. Further, the electric four-wheel vehicle 1 is provided with a forward / reverse changeover switch (not shown) for switching between forward and reverse, and by operating the forward / reverse changeover switch, the forward and reverse directions indicated by an arrow F in FIG. In this structure, the direction of travel can be changed to the opposite side.
[0015]
Reference numeral 5 denotes an alarm sound device according to the present invention. As shown in FIG. 3, the alarm sound device 5 responds to various detection devices 6 to 11 for detecting the driving state of the vehicle body and signals from these detection devices. An alarm sound control device 12 for controlling driving of each speaker, which will be described later, an external speaker amplifier 13, an in-vehicle speaker amplifier 14 and a sound source device 15 connected to the alarm sound control device 12, and a vehicle body. And various speakers 16 to 20.
[0016]
These speakers 16 to 20 all have directivity in the sound propagation direction, and as shown in FIG. 2, the speaker 16 is attached to the forefront of the vehicle with the sound propagation direction forward of the vehicle, The speaker 17 is attached to the rearmost part of the vehicle body with the sound propagation direction directed toward the rear of the vehicle body. The speaker 18 is attached to the left front part of the vehicle with the sound propagation direction directed to the left front of the vehicle body, and the speaker 19 is attached to the right front part of the vehicle with the sound propagation direction directed to the front right of the vehicle body. The speaker 20 is mounted in a passenger compartment 21 where a driver (not shown) is seated with the sound propagation direction toward the driver.
[0017]
Among the various detection devices 6 to 11, the load detection device 6 is configured to detect a load on the motor-type power unit from the depression amount of the accelerator pedal 2 and output a load signal to the alarm sound control device 12. The vehicle speed detection device 7 has a structure that detects whether the vehicle body is traveling in the front-rear direction from the rotation of the front wheel 1 a and the vehicle speed, and outputs a front-rear direction determination signal and a vehicle speed signal to the alarm sound control device 12. It has become.
[0018]
The braking force detection device 8 has a structure that detects the braking force in the braking device from the depression amount of the brake pedal 3 and outputs a braking force signal to the alarm sound control device 12. The ambient noise detection device 9 is a noise detection microphone that constitutes a noise sensor, and is attached to the rear part of the vehicle body and has a structure for outputting an ambient noise signal to the alarm sound control device 12.
[0019]
The in-vehicle volume adjusting device 10 is for adjusting the sound volume at the speaker 20 and is arranged in the vicinity of the driver's seat in the passenger compartment 21. The steering angle detection device 11 detects whether the steering direction of the front wheel 1a is right or left and how many times the steering angle is, and outputs a left-right direction determination signal and a steering angle signal as an alarm sound control device 12. It has a structure to output to.
[0020]
The alarm sound control device 12 reads map data stored in advance based on signals input from the various detection devices described above, and determines the basic sound quality of the alarm sound. This sound quality is mainly the frequency distribution of the sound, and also the pitch and tempo. Then, the speaker to be driven is determined according to the traveling direction of the vehicle body, and a volume signal for controlling the volume of the alarm sound is sent to the speaker amplifier 13 for the outside of the vehicle for each driving speaker. A volume signal is sent to control the volume. At the same time, the alarm sound control device 12 sends a control signal mainly for controlling the frequency distribution state of the sound or the pitch and tempo to the sound source device 15 in accordance with the driving state of the vehicle body. The sound source device 15 reads sound waveform data stored in advance according to the control signal, and outputs a voltage signal corresponding to the sound pressure waveform to the speaker amplifiers 13 and 14.
[0021]
The speaker amplifiers 13 and 14 drive the speaker by passing a drive current through the speaker based on the volume signal input from the alarm sound control device 12 and the voltage signal input from the sound source device 15. That is, among the speakers 16 to 19 directed to the outside of the vehicle, the speaker specified by the alarm sound control device 12 and the speaker 20 in the vehicle interior generate an alarm sound.
[0022]
The warning sound control device 12 always outputs a signal to both the amplifiers 13 and 14 during running and when the electric four-wheeled vehicle 1 is ready to run, and the warning sound is output by a speaker. It is configured to generate. When the vehicle body is stopped, the speaker directed in the direction set by the forward / reverse switching switch and the speaker 20 in the vehicle interior are driven. That is, when the vehicle body is stopped in the forward movement state, the speaker 16 and the speaker 20 that are directed forward are driven.
[0023]
When the warning sound control device 12 determines the traveling direction of the vehicle body, the front / rear direction determination signal input from the vehicle speed detection device 7 and the left / right direction determination signal input from the steering angle detection device 11 are used. That is, a volume signal for the speaker 16 is output to the amplifier 13 when the vehicle body is moving forward, and a volume signal for the speaker 17 is output to the amplifier 13 when the vehicle is moving backward. As described above, when the vehicle body is moving forward or backward, the loudspeaker facing rearward in the traveling direction is controlled so that the volume is zero or smaller than the loudspeaker facing forward in the traveling direction. When the vehicle body is turning left, a volume signal for the speaker 18 is output to the amplifier 13, and when the vehicle body is turning right, a volume signal for the speaker 19 is output to the amplifier 13. When performing a turn in this way, the loudspeaker facing away from the turn direction is controlled so that the volume is zero.
[0024]
Further, the volume of the alarm sound generated from each speaker is controlled to be larger than the ambient noise detected by the ambient noise detection device 9, and the load detection device 6, the vehicle speed detection device 7, the braking force detection device 8, Control is performed so that the load amount, vehicle speed, braking amount, and steering angle detected by the steering angle detection device 11 increase as the steering angle increases. For this reason, for example, when the vehicle speed increases, the volume increases as the vehicle speed increases as shown in FIG. Further, when the steering handle 4 is turned counterclockwise during forward travel, a loudspeaker alarm sound corresponding to the vehicle speed is generated from the speaker 16, and a loudness alarm sound corresponding to the steering angle is generated from the speaker 18. In this case, the speaker 17 facing backward and the speaker 19 facing forward right are not driven. Furthermore, as the braking force increases, the volume of the alarm sound increases.
[0025]
The frequency distribution or pitch and tempo of the alarm sound set by the sound source device 15 are changed according to the braking force, the vehicle speed, and the load amount. That is, as shown in FIG. 5, as the braking force increases, the ratio of the high frequency component of the alarm sound generated from the speaker is increased, the change in pitch is increased, or the tempo is delayed. In other words, the alarm sound becomes firmer or more tense as the braking is suddenly performed. Further, as shown in FIG. 6, the ratio of the low frequency component of the alarm sound generated from the speaker increases as the vehicle speed or the load amount increases. That is, an alarm sound that feels heavier as the vehicle speed or load amount increases.
[0026]
When the alarm sound device 5 configured as described above is provided, when the power unit is in a travelable state, an alarm sound is emitted from the speakers 16 to 19 toward the front in the traveling direction of the vehicle body, and toward the driver. Then, an alarm sound is emitted from the speaker 20. The volume of the warning sound is increased or decreased according to the vehicle speed, the steering angle, the load amount, and the braking force.
[0027]
Therefore, the pedestrian can recognize the driving state and the traveling direction of the electric four-wheeled vehicle 1 by distinguishing the volume or sound quality of the alarm sound generated from the speakers 16 to 19. In addition, the driver can also recognize the driving state of the electric four-wheeled vehicle 1 by recognizing the volume or sound quality of the alarm sound generated from the speaker 20 in the passenger compartment. The volume of the alarm sound generated from the speaker 20 in the passenger compartment can be increased or decreased by the driver by adjusting the in-vehicle volume adjusting device 10.
[0028]
Further, since only the speakers 16 to 19 that emit an alarm sound to the outside of the vehicle are driven substantially in accordance with the traveling direction of the vehicle body, the alarm sound transmitted to pedestrians walking outside the traveling direction, the side of the vehicle body, or the like. Is very small.
[0029]
In this embodiment, the speakers 16, 18, and 19 are attached to the three front portions of the vehicle body. However, when the speakers 18 and 19 are provided on the left and right, the center speaker 16 is not required. it can. In this case, the output balance of the left and right speakers 18 and 19 is made to correspond to the steering angle, and when the steering angle is 0 degree (the angle at which the vehicle body goes straight), the left and right speakers 18 and 19 have equal volume. Configure to generate an alarm sound. That is, as the steering handle 4 rotates, the range that the alarm sound reaches moves to the left and right.
[0030]
Further, in this embodiment, the alarm sound is always generated from the speaker 20 in the vehicle compartment when the vehicle is ready to travel. However, if the configuration shown in FIG. 7 is adopted, the alarm sound emitted from the driver into the vehicle interior as necessary. Will be able to break.
[0031]
FIG. 7 is a block diagram showing another example in which a vehicle interior speaker can be selectively driven. In FIG. 7, the same or equivalent members as those described in FIGS. The detailed description is omitted. In FIG. 7, reference numeral 31 denotes a vehicle interior sound ON / OFF switch, and this switch 31 is interposed between the vehicle interior speaker amplifier and a power source (battery) 32. Further, the vehicle interior speaker amplifier 14 is provided with a variable resistor for adjusting the volume of the vehicle interior speaker 20 in this embodiment. Reference numeral 33 denotes a power unit for running the vehicle body.
[0032]
If comprised in this way, since the electric power supply to the amplifier 14 for vehicle interior speakers will be cut off by setting the switch 31 to an OFF state, the alarm sound will not be produced from the vehicle interior speaker 20. When the switch 31 is turned on, the volume of the vehicle interior speaker 20 can be increased or decreased by adjusting the variable resistance of the vehicle interior speaker amplifier 14.
[0033]
In addition, in each of the above-described embodiments, an example in which the present invention is applied to an electric four-wheeled vehicle is shown, but the alarm sound device 5 according to the present invention can also be applied to an electric motorcycle.
[0034]
【The invention's effect】
As described above, the alarm sound device for an electric vehicle according to the present invention has a configuration in which a speaker that emits sound to the outside of the vehicle body is attached to the vehicle body, and a sound is generated from the speaker when the vehicle body is in an operable state. In order to change the volume or sound quality of the sound generated from this speaker according to the driving state of the vehicle body, the pedestrian listens to the volume and / or sound quality of the alarm sound generated from the speaker to distinguish the speed, load and acceleration / deceleration state of the electric vehicle. Can be recognized.
[0035]
In such a configuration, if the volume of the alarm sound is made larger than the noise around the vehicle body or the sound quality is changed, the presence of the electric vehicle can be surely notified to the pedestrian.
[0037]
Furthermore, if the loudspeaker volume is increased as at least one of the braking amount of the vehicle body, the vehicle speed, and the load increases while adopting the configuration for transmitting the alarm sound to the pedestrian as described above, the pedestrian can It is possible to instantly recognize that the driving state is changing.
[0038]
Furthermore, when a configuration for increasing the proportion of high-frequency components of the alarm sound in accordance with the braking amount in the electric vehicle is increased while taking a structure to convey a warning sound to pedestrians as described above, the pedestrian is stiff feel Sudden braking can be recognized by an alarm sound.
[0039]
In addition, as described above, the pedestrian is heavier if the configuration of increasing the ratio of the low frequency component of the warning sound as the vehicle speed or load in the electric vehicle increases while adopting the configuration of transmitting the warning sound to the pedestrian as described above. It is possible to recognize that the vehicle speed and load are large by a warning sound that can be felt.
[0040]
Furthermore, the alarm sound device for an electric vehicle according to the present invention is configured to attach a speaker that emits sound with directivity to the outside of the vehicle body, and to generate a sound from the speaker when the vehicle body is in an operable state. Since the volume or sound quality of the sound generated from this speaker has been changed according to the traveling direction of the vehicle body, the pedestrian can recognize the sound quality of the alarm sound generated from the speaker and thereby adjust the traveling direction along with the speed, load and acceleration / deceleration state of the electric vehicle. Can be recognized.
[0041]
In the case of adopting such a configuration, the pedestrian can surely recognize the traveling direction by causing the warning sound to be radiated separately to the front, rear, left front, and right front of the vehicle corresponding to the traveling direction of the vehicle. it can. Moreover, since only the speaker that emits an alarm sound outside the vehicle is driven substantially in accordance with the traveling direction of the vehicle body, the alarm sound transmitted to pedestrians walking outside the traveling direction or the side of the vehicle body is extremely small. Become. For this reason, a noise problem is not caused.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic configuration of an alarm sound device for an electric vehicle according to the present invention.
FIG. 2 is a plan view showing the arrangement of speakers.
FIG. 3 is a block diagram showing a configuration of an alarm sound device for an electric vehicle according to the present invention.
FIG. 4 is a graph showing how the volume changes according to the driving state.
FIG. 5 is a graph showing how the frequency distribution and volume of sound change according to braking force.
FIG. 6 is a graph showing how the frequency distribution and volume of sound change according to vehicle speed or load.
FIG. 7 is a block diagram showing another example in which a vehicle interior speaker can be selectively driven.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electric four-wheeled vehicle, 5 ... Alarm sound apparatus, 6 ... Load detection apparatus, 7 ... Vehicle speed detection apparatus, 8 ... Braking force detection apparatus, 9 ... Ambient noise detection apparatus, 11 ... Steering angle detection apparatus, 12 ... Alarm Sound control device, 13 ... Amplifier for speaker outside vehicle, 14 ... Amplifier for speaker in vehicle compartment, 15 ... Sound source device, 16-20 ... Speaker.

Claims (4)

音の伝播方向が車体外方に向けられたスピーカと、車体の運転状態を検出する運転状態検出装置と、この運転状態検出装置が検出した運転状態に応じて前記スピーカの駆動を制御する制御装置とを備え、この制御装置を、車体が走行可能状態になっているときには走行中、停止中共に常に前記スピーカによって警報音を発生させ、運転状態が変化したときに変化量に応じて前記音の音量あるいは及び音質を変化させる構成としてなり、前記スピーカを、音の伝播方向を車体の前方と後方とに向けて車体に複数取付け、かつ運転状態検出装置を車体の進行方向が前後何れであるかを検出する構成とし、制御装置を、前記音の伝播方向が異なる２種類のスピーカでの音量あるいは及び音質を車体の進行方向に応じて変える構成としたことを特徴とする電気車両の警報音装置。A speaker whose sound propagation direction is directed toward the outside of the vehicle body, a driving state detection device that detects the driving state of the vehicle body, and a control device that controls the driving of the speaker according to the driving state detected by the driving state detection device The control device is configured to always generate an alarm sound by the speaker when the vehicle body is in a travelable state , both during traveling and when stopped, and according to the amount of change when the driving state changes. Whether the volume or sound quality is changed, a plurality of the speakers are attached to the vehicle body with the sound propagation direction facing the front and the rear of the vehicle body, and the driving state detection device is in the front-rear direction. And the control device is configured to change the volume or sound quality of two types of speakers having different sound propagation directions according to the traveling direction of the vehicle body. Audible alarm device of an electric vehicle that. 音の伝播方向が車体外方に向けられたスピーカと、車体の運転状態を検出する運転状態検出装置と、この運転状態検出装置が検出した運転状態に応じて前記スピーカの駆動を制御する制御装置とを備え、この制御装置を、車体が走行可能状態になっているときには走行中、停止中共に常に前記スピーカによって警報音を発生させ、運転状態が変化したときに変化量に応じて前記音の音量あるいは及び音質を変化させる構成としてなり、前記スピーカを、音の伝播方向を車体の左前方と右前方とに向けて車体に複数取付け、かつ運転状態検出装置を車体の進行方向が左右何れであるかを検出する構成とし、制御装置を、前記音の伝播方向が異なる２種類のスピーカでの音量あるいは及び音質を車体の進行方向に応じて変える構成としたことを特徴とする電気車両の警報音装置。A speaker whose sound propagation direction is directed toward the outside of the vehicle body, a driving state detection device that detects the driving state of the vehicle body, and a control device that controls the driving of the speaker according to the driving state detected by the driving state detection device The control device is configured to always generate an alarm sound by the speaker when the vehicle body is in a travelable state , both during traveling and when stopped, and according to the amount of change when the driving state changes. It is configured to change the volume or sound quality, and the speaker is attached to the vehicle body with the sound propagation direction left front and right front of the vehicle body, and the driving state detection device is either left or right traveling direction of the vehicle body The control device is configured to change the volume or sound quality of the two types of speakers with different sound propagation directions according to the traveling direction of the vehicle body. Audible alarm device for an electric vehicle to be. 請求項１または請求項２記載の電気車両の警報音装置において、制御装置がスピーカでの音質を変えるときには、音の伝播方向が車体の進行方向前方と一致するスピーカから発生する音の高周波成分を他のスピーカより大きくすることを特徴とする電気車両の警報音装置。3. The alarm sound device for an electric vehicle according to claim 1, wherein when the control device changes the sound quality of the speaker, the high frequency component of the sound generated from the speaker whose sound propagation direction coincides with the forward direction of the vehicle body is obtained. An alarm sound device for an electric vehicle, which is larger than other speakers. 請求項１ないし請求項３のうちいずれか一つの警報音装置を有する電気車両。An electric vehicle comprising the alarm device according to any one of claims 1 to 3.
JP12712394A 1994-05-18 1994-05-18 Alarm sound device for electric vehicle and electric vehicle Expired - Lifetime JP3625073B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12712394A JP3625073B2 (en) 1994-05-18 1994-05-18 Alarm sound device for electric vehicle and electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12712394A JP3625073B2 (en) 1994-05-18 1994-05-18 Alarm sound device for electric vehicle and electric vehicle

Publications (2)

Publication Number Publication Date
JPH07322403A JPH07322403A (en) 1995-12-08
JP3625073B2 true JP3625073B2 (en) 2005-03-02

Family

ID=14952185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12712394A Expired - Lifetime JP3625073B2 (en) 1994-05-18 1994-05-18 Alarm sound device for electric vehicle and electric vehicle

Country Status (1)

Country Link
JP (1) JP3625073B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8320581B2 (en) 2010-03-03 2012-11-27 Bose Corporation Vehicle engine sound enhancement
US9299337B2 (en) 2011-01-11 2016-03-29 Bose Corporation Vehicle engine sound enhancement
US9994148B1 (en) 2016-12-14 2018-06-12 Mando Hella Electronics Corporation Pedestrian warning device of vehicle
KR102267035B1 (en) * 2019-12-26 2021-06-21 만도헬라일렉트로닉스(주) Virtual sound generating system and virtual sound generating method

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1127810A (en) * 1997-06-30 1999-01-29 Nec Corp Electric vehicle
JP4130571B2 (en) * 2002-11-14 2008-08-06 ヤマハ発動機株式会社 Straddle-type electric vehicle
JP2005219715A (en) * 2004-02-09 2005-08-18 Pioneer Electronic Corp Pseudo sound generating device, vehicle, pseudo sound generating method and pseudo sound generating program
JP4316397B2 (en) 2004-02-09 2009-08-19 パイオニア株式会社 Pseudo sound generator, vehicle, pseudo sound generation method, and pseudo sound generation program
US7253746B2 (en) 2004-03-10 2007-08-07 Fujitsu Ten Limited Vehicle-presence notifying apparatus and vehicle-presence notifying method
JP4347743B2 (en) * 2004-05-11 2009-10-21 パイオニア株式会社 Sound generator, method thereof, program thereof, and recording medium recording the program
JP4680823B2 (en) * 2006-04-21 2011-05-11 トヨタ自動車株式会社 Diffuse warning light device
JP4656045B2 (en) * 2006-11-14 2011-03-23 ヤマハ株式会社 Notification device
JP2009035195A (en) * 2007-08-03 2009-02-19 Toyota Motor Corp Vehicle approach informing device
KR101459760B1 (en) * 2007-12-26 2014-11-07 주식회사 두산 Alarm device for around forklift truck
KR101307799B1 (en) * 2008-08-22 2013-09-12 주식회사 만도 Brake system of vehicle having noise generator
JP2010228564A (en) * 2009-03-26 2010-10-14 Yamaha Corp Automobile
JP2011109757A (en) * 2009-11-13 2011-06-02 Mitsubishi Motors Corp Charging system for electric vehicle
AT507485B1 (en) 2010-01-28 2012-12-15 Avl List Gmbh METHOD AND DEVICE FOR OPERATING A HYBRID VEHICLE
JP5644478B2 (en) 2010-02-09 2014-12-24 日産自動車株式会社 Vehicle warning sound generator
JP5644479B2 (en) 2010-02-09 2014-12-24 日産自動車株式会社 Vehicle warning sound generator
EP2534007B1 (en) 2010-02-09 2018-04-11 Nissan Motor Co., Ltd Vehicle notification sound emitting apparatus
JP5728932B2 (en) 2010-02-09 2015-06-03 日産自動車株式会社 Vehicle warning sound generator
JP5560750B2 (en) 2010-02-09 2014-07-30 日産自動車株式会社 Vehicle warning sound generator
JP5560752B2 (en) * 2010-02-09 2014-07-30 日産自動車株式会社 Electric vehicle warning sound generator
WO2011098881A1 (en) 2010-02-09 2011-08-18 Nissan Motor Co., Ltd. Vehicle notification sound emitting apparatus
JP2011193631A (en) * 2010-03-15 2011-09-29 Mitsubishi Fuso Truck & Bus Corp Notification device of motor-driven vehicle
JP2011201395A (en) * 2010-03-25 2011-10-13 Mitsubishi Fuso Truck & Bus Corp Device for notification of hybrid electric vehicle
KR101159797B1 (en) * 2010-03-31 2012-06-26 한국과학기술원 Active sound warning system for a vehicle
DE102010027810B4 (en) 2010-04-15 2024-10-02 Robert Bosch Gmbh Method and control unit for driving noise adaptation
JP5560902B2 (en) 2010-05-24 2014-07-30 日産自動車株式会社 Vehicle warning sound generator
JP5560901B2 (en) 2010-05-24 2014-07-30 日産自動車株式会社 Vehicle warning sound generator
JP5257430B2 (en) * 2010-09-21 2013-08-07 株式会社デンソー Vehicle power supply control device
US8760003B2 (en) 2010-08-02 2014-06-24 Denso Corporation Vehicle-use power supply control apparatus and control apparatus for controlling electric rotating machine mounted on vehicle as main engine
DE102011087765A1 (en) * 2011-12-05 2013-06-06 Robert Bosch Gmbh Method and device for damping and / or amplifying a noise introduced into a passenger compartment of a motor vehicle
DE102012107814B4 (en) * 2012-08-24 2024-09-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and device for generating noise in the interior and exterior of a motor vehicle
CN104602964B (en) * 2012-09-05 2018-01-02 三菱电机株式会社 Vehicle is close to warning tone generation device
JP6083347B2 (en) 2013-07-30 2017-02-22 アンデン株式会社 Vehicle approach notification device
KR101547938B1 (en) * 2014-04-29 2015-08-28 대성전기공업주식회사 Driving Sound Generating System for Environment Friendly Vehicle and a method for controlling the system
EP3300966B1 (en) * 2016-09-28 2020-11-18 Vodafone Automotive S.p.A. A controller for an acoustic alerting system for electric/hybrid vehicles
IT201600097506A1 (en) * 2016-09-28 2018-03-28 Vodafone Automotive S P A MULTIFUNCTIONAL ACOUSTIC WARNING SYSTEM FOR VEHICLES
JP2018176824A (en) * 2017-04-04 2018-11-15 アイシン精機株式会社 Vehicle power source noise reduction device
CN107436191B (en) * 2017-06-30 2022-06-14 吉林大学 Method for testing quality of pedestrian warning sound
JP7281706B2 (en) * 2019-03-27 2023-05-26 パナソニックＩｐマネジメント株式会社 SOUND PROCESSING DEVICE, VEHICLE AND SOUND PROCESSING METHOD
JP7454119B2 (en) 2019-08-21 2024-03-22 マツダ株式会社 Vehicle sound generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8320581B2 (en) 2010-03-03 2012-11-27 Bose Corporation Vehicle engine sound enhancement
US9299337B2 (en) 2011-01-11 2016-03-29 Bose Corporation Vehicle engine sound enhancement
US9994148B1 (en) 2016-12-14 2018-06-12 Mando Hella Electronics Corporation Pedestrian warning device of vehicle
KR102267035B1 (en) * 2019-12-26 2021-06-21 만도헬라일렉트로닉스(주) Virtual sound generating system and virtual sound generating method

Also Published As

Publication number Publication date
JPH07322403A (en) 1995-12-08

Similar Documents

Publication Publication Date Title
JP3625073B2 (en) Alarm sound device for electric vehicle and electric vehicle
WO2011148534A1 (en) Pseudo-sound control device, pseudo-sound generating device, and electric movable body equipped with said devices
JP5958646B2 (en) Vehicle acoustic control apparatus and vehicle acoustic control method
JP2004136831A (en) Sound generating device and automobile
US20070229235A1 (en) Vehicle-mounted sounding device
US9036828B2 (en) Method for outputting music information in a vehicle
JP4116980B2 (en) Setting volume adjusting device and adjusting method in vehicle audio device
JP3179227B2 (en) Vehicle alarm system
JP2000168468A (en) Information transmitting device for vehicle
KR101277934B1 (en) Virtual engine sound device for an electric motor based vehicle and method for controlling the device
JP2571332Y2 (en) Dummy sound generator for electric vehicles
JP5958647B2 (en) Vehicle acoustic control apparatus and vehicle acoustic control method
JP2008162477A (en) Vehicular approach notifying device
JP2008001124A (en) Vehicle-mounted sounding device
JP3687156B2 (en) Rear-end collision warning device for automobiles
JP3147168U (en) Alarm device
JPH07322402A (en) Driver supporting device for electric car
JP2005231588A (en) Vehicular stop assisting device
JP4126990B2 (en) Vehicle interior sound control device
JP2008230295A (en) Braking force control device for vehicle
CN106080378B (en) Warning system for vehicle and alarming method for power based on sterophonic technique
JP5093603B2 (en) Danger situation notification device
JPH11321459A (en) Alarm sound device for vehicle
JP3736003B2 (en) Vehicle alarm device
JP2012206655A (en) Sound reproducing apparatus for use in vehicle

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Effective date: 20040427

Free format text: JAPANESE INTERMEDIATE CODE: A131

A521 Written amendment

Effective date: 20040622

Free format text: JAPANESE INTERMEDIATE CODE: A523

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20041124

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041125

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101210

Year of fee payment: 6

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111210

Year of fee payment: 7

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 7

Free format text: PAYMENT UNTIL: 20111210

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121210

Year of fee payment: 8

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131210

Year of fee payment: 9

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term