JPH0469612U - - Google Patents
Info
- Publication number
- JPH0469612U JPH0469612U JP11121990U JP11121990U JPH0469612U JP H0469612 U JPH0469612 U JP H0469612U JP 11121990 U JP11121990 U JP 11121990U JP 11121990 U JP11121990 U JP 11121990U JP H0469612 U JPH0469612 U JP H0469612U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle interior
- interior noise
- reduction device
- noise reduction
- speaker
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は、本考案及び従来例に係る車室内騒音
の低減装置の原理的な構成を示すブロツク図、第
２図は、本考案に係る車室内騒音の低減装置に用
いる振動センサの取り付け実施例を示した図、第
３図は、従来の車室内騒音の低減装置の一実施例
を示した構成図、第４図は、コントローラによる
適応制御を説明するための図、である。
第１図において、１は車室、２はエンジン、３
はエンジン振動センサ（又はエンジン回転数セン
サ）、４はマイク（又は振動センサ）、５はコン
トローラ、６はスピーカ、１０はキヤブ、１１は
エンジン・マウンテイング、１２はフレーム、１
３はキヤブ・マウンテイングをそれぞれ示す。図
中、同一符号は同一又は相当部分を示す。
FIG. 1 is a block diagram showing the basic structure of the vehicle interior noise reduction device according to the present invention and the conventional example, and FIG. 2 is a diagram showing the installation of a vibration sensor used in the vehicle interior noise reduction device according to the present invention. FIG. 3 is a block diagram showing an example of a conventional vehicle interior noise reduction device, and FIG. 4 is a diagram for explaining adaptive control by a controller. In Figure 1, 1 is the passenger compartment, 2 is the engine, and 3
is an engine vibration sensor (or engine speed sensor), 4 is a microphone (or vibration sensor), 5 is a controller, 6 is a speaker, 10 is a cab, 11 is an engine mounting, 12 is a frame, 1
3 indicates cab mounting. In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
れエンジン回転に同期した基準信号を検出する手
段と、車室内騒音のレベルを検出するマイクと、
スピーカと、該基準信号に基づき該騒音レベル検
出手段への入力が最小となるように該スピーカの
出力を適応制御するコントローラとを備えたこと
を特徴とする車室内騒音の低減装置。 (2) 該フレームの代わりに、キヤブマウンテイ
ングを用いることを特徴とした請求項１に記載の
車室内騒音の低減装置。 (3) 該マイクの代わりに、該エンジンを起振源
とする車体の振動を検出する振動センサを用いる
ことを特徴とした請求項１又は２に記載の車室内
騒音の低減装置。 (4) 該スピーカと該マイクが、車室内騒音の定
在波の腹となる車体位置に対向して設置されたこ
とを特徴とする請求項１又は２に記載の車室内騒
音の低減装置。 (5) 該スピーカと該振動センサが、車室内騒音
の定在波の腹となる車体位置に対向して設置され
たことを特徴とする請求項３に記載の車室内騒音
の低減装置。[Claims for Utility Model Registration] (1) A means for detecting a reference signal provided in a frame supporting the engine body and synchronized with engine rotation, and a microphone for detecting the level of noise inside the vehicle;
A vehicle interior noise reduction device comprising: a speaker; and a controller that adaptively controls the output of the speaker so that input to the noise level detection means is minimized based on the reference signal. (2) The vehicle interior noise reduction device according to claim 1, characterized in that a cab mounting is used in place of the frame. (3) The vehicle interior noise reduction device according to claim 1 or 2, characterized in that a vibration sensor that detects vibrations of the vehicle body whose vibration source is the engine is used in place of the microphone. (4) The vehicle interior noise reduction device according to claim 1 or 2, wherein the speaker and the microphone are installed opposite to a vehicle body position that is an antinode of a standing wave of vehicle interior noise. (5) The vehicle interior noise reduction device according to claim 3, wherein the speaker and the vibration sensor are installed opposite to a vehicle body position that is an antinode of a standing wave of vehicle interior noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111219U JP2589738Y2 (en) | 1990-10-24 | 1990-10-24 | Vehicle interior noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111219U JP2589738Y2 (en) | 1990-10-24 | 1990-10-24 | Vehicle interior noise reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0469612U true JPH0469612U (en) | 1992-06-19 |
| JP2589738Y2 JP2589738Y2 (en) | 1999-02-03 |
Family
ID=31858641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990111219U Expired - Fee Related JP2589738Y2 (en) | 1990-10-24 | 1990-10-24 | Vehicle interior noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2589738Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315346A (en) * | 1987-06-18 | 1988-12-23 | Toyota Motor Corp | Shielded sound control device for vehicle |
| JPH0241954A (en) * | 1988-08-03 | 1990-02-13 | Kanto Auto Works Ltd | Device for reducing sound confined in vehicle |
-
1990
- 1990-10-24 JP JP1990111219U patent/JP2589738Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315346A (en) * | 1987-06-18 | 1988-12-23 | Toyota Motor Corp | Shielded sound control device for vehicle |
| JPH0241954A (en) * | 1988-08-03 | 1990-02-13 | Kanto Auto Works Ltd | Device for reducing sound confined in vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2589738Y2 (en) | 1999-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |