JPS63188571U - - Google Patents
Info
- Publication number
- JPS63188571U JPS63188571U JP8156387U JP8156387U JPS63188571U JP S63188571 U JPS63188571 U JP S63188571U JP 8156387 U JP8156387 U JP 8156387U JP 8156387 U JP8156387 U JP 8156387U JP S63188571 U JPS63188571 U JP S63188571U
- Authority
- JP
- Japan
- Prior art keywords
- comparison
- frequency component
- specific frequency
- circuit
- input signal
- 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
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
第１図は、この考案の特定周波数成分判別装置
の一実施例を示す回路構成図、第２図は、第１図
に示した回路各部の信号波形図、第３図は、従来
の特定周波数成分判別装置の一例を示す回路構成
図である。
３……帯域波回路、４……直流変換回路、５
……比較回路、１１……特定周波数成分判別装置
、１２……絶対値平均回路、１３……線形変換回
路。
Fig. 1 is a circuit configuration diagram showing an embodiment of the specific frequency component discrimination device of this invention, Fig. 2 is a signal waveform diagram of each part of the circuit shown in Fig. 1, and Fig. 3 is a conventional specific frequency component discrimination device. FIG. 2 is a circuit configuration diagram showing an example of a component discrimination device. 3...Band wave circuit, 4...DC conversion circuit, 5
... Comparison circuit, 11 ... Specific frequency component discrimination device, 12 ... Absolute value averaging circuit, 13 ... Linear conversion circuit.
Claims (1)
帯域波回路と、この帯域波回路が抽出した特
定周波数成分を入力とし、所定の比較基準を越え
る入力に対して特定周波数成分判別信号を出力す
る比較回路と、この比較回路の比較基準を、前記
入力信号の振幅レベルにほぼ比例するごとく可変
する比較基準可変手段からなる特定周波数成分判
別装置。 A band wave circuit that extracts a specific frequency component included in an input signal, and a comparison circuit that receives the specific frequency component extracted by this band wave circuit as an input and outputs a specific frequency component discrimination signal for inputs that exceed a predetermined comparison standard. and a comparison reference variable means for varying the comparison reference of the comparison circuit so as to be substantially proportional to the amplitude level of the input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8156387U JPS63188571U (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8156387U JPS63188571U (en) | 1987-05-28 | 1987-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63188571U true JPS63188571U (en) | 1988-12-02 |
Family
ID=30933419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8156387U Pending JPS63188571U (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63188571U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200826A (en) * | 1981-06-05 | 1982-12-09 | Japan Electronic Control Syst Co Ltd | Knocking detecting device |
| JPS5828646A (en) * | 1981-08-14 | 1983-02-19 | Nissan Motor Co Ltd | Knocking detector |
-
1987
- 1987-05-28 JP JP8156387U patent/JPS63188571U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200826A (en) * | 1981-06-05 | 1982-12-09 | Japan Electronic Control Syst Co Ltd | Knocking detecting device |
| JPS5828646A (en) * | 1981-08-14 | 1983-02-19 | Nissan Motor Co Ltd | Knocking detector |