JPS596734U - Knocking detection device - Google Patents
Knocking detection deviceInfo
- Publication number
- JPS596734U JPS596734U JP10181082U JP10181082U JPS596734U JP S596734 U JPS596734 U JP S596734U JP 10181082 U JP10181082 U JP 10181082U JP 10181082 U JP10181082 U JP 10181082U JP S596734 U JPS596734 U JP S596734U
- Authority
- JP
- Japan
- Prior art keywords
- fourier transform
- fast fourier
- waveform
- knocking
- detection device
- 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.)
- Pending
Links
Landscapes
- Testing Of Engines (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の第１の実施例の構成図、第２図は第１
図の電子制御装置のブロック図、第３図は本考案の第２
の実施例の構成図、第４図は本考案の基本思想を説明子
るための図、第５図はノッキングの発生を検出するプロ
グラムのフローチャ−ト、第６図は尿考案を利用する点
火時期制御のプログラムのフローチャートである。
１・・・ノックセンサ、２・・・エンジン本体、３・・
・電 −子制御装置、１７・・・ＦＦＴ０Fig. 1 is a configuration diagram of the first embodiment of the present invention, and Fig. 2 is a block diagram of the first embodiment of the present invention.
The block diagram of the electronic control device shown in Fig. 3 is the second one of the present invention.
Fig. 4 is a diagram for explaining the basic idea of the present invention, Fig. 5 is a flowchart of a program for detecting the occurrence of knocking, and Fig. 6 is an ignition system using urine detection. It is a flowchart of a program of timing control. 1...knock sensor, 2...engine body, 3...
・Electronic control unit, 17...FFT0
Claims (1)
振動検出手段の出力を高速フーリエ変換する変換手段、
および高速フーリエ変換波形をノッキング振動の高速フ
ーリエ変換波形としての基準波形と比較しハミングの窓
の全周波数範囲で高速フーリエ変換波形上の値と基準波
形上の値との差の絶対値が所定値未満であればノッキン
グが発生したと判定する比較手段を備えていることを特
徴とする、ノッキング検出装置。 ２ ハミングの窓内にある複数の周波数のみにおいて前
記高速フーリエ変換波形と前記基準波形とを比較するこ
とを特徴とする、実用新案登録請求の範囲第１項記載の
ノッキング検出装置。[Claims for Utility Model Registration] 1. Vibration detection means for detecting vibrations of the engine body, conversion means for performing fast Fourier transform on the output of this vibration detection means;
Then, the fast Fourier transform waveform is compared with the reference waveform as the fast Fourier transform waveform of knocking vibration, and the absolute value of the difference between the value on the fast Fourier transform waveform and the value on the reference waveform is a predetermined value in the entire frequency range of the Hamming window. A knocking detection device characterized by comprising a comparison means for determining that knocking has occurred if the difference is less than that. 2. The knocking detection device according to claim 1, wherein the fast Fourier transform waveform and the reference waveform are compared only at a plurality of frequencies within a Hamming window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10181082U JPS596734U (en) | 1982-07-07 | 1982-07-07 | Knocking detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10181082U JPS596734U (en) | 1982-07-07 | 1982-07-07 | Knocking detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596734U true JPS596734U (en) | 1984-01-17 |
Family
ID=30240264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10181082U Pending JPS596734U (en) | 1982-07-07 | 1982-07-07 | Knocking detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596734U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0347449A (en) * | 1989-04-14 | 1991-02-28 | Hitachi Ltd | Knocking sensing device and engine control device |
| JP2005023902A (en) * | 2003-07-03 | 2005-01-27 | Denso Corp | Knock detection device for internal combustion engine |
| JP2006307708A (en) * | 2005-04-27 | 2006-11-09 | Toyota Motor Corp | Knocking determining device of internal combustion engine |
-
1982
- 1982-07-07 JP JP10181082U patent/JPS596734U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0347449A (en) * | 1989-04-14 | 1991-02-28 | Hitachi Ltd | Knocking sensing device and engine control device |
| JP2005023902A (en) * | 2003-07-03 | 2005-01-27 | Denso Corp | Knock detection device for internal combustion engine |
| JP2006307708A (en) * | 2005-04-27 | 2006-11-09 | Toyota Motor Corp | Knocking determining device of internal combustion engine |
| JP4491376B2 (en) * | 2005-04-27 | 2010-06-30 | トヨタ自動車株式会社 | Internal combustion engine knock determination device |
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