JPS6333217U - - Google Patents
Info
- Publication number
- JPS6333217U JPS6333217U JP12671386U JP12671386U JPS6333217U JP S6333217 U JPS6333217 U JP S6333217U JP 12671386 U JP12671386 U JP 12671386U JP 12671386 U JP12671386 U JP 12671386U JP S6333217 U JPS6333217 U JP S6333217U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sample
- full
- peak value
- half period
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims 2
- 239000000284 extract Substances 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Manipulation Of Pulses (AREA)
Description
第１図は本考案の周波数変換回路の一実施例を
示す電気回路図、第２図ａ〜ｆは上記第１図に示
す周波数変換回路に入力する正弦波及びその全波
整流波及び上記電気回路図における各点における
波形図、第３図ａ，ｂ，ｃは従来の回転センサー
からの出力波形をマイコンで処理する場合の不都
合を説明するための概略図である。
１ａ，１ｂ……コネクタ、３……全波整流器、
１１……オペアンプ、１２……コンデンサ（サン
プルホールド手段）、１３′１４……ダイオード
、１５……抵抗、１６……シユミツトトリガ回路
、１７……フリツプフロツプ回路。
FIG. 1 is an electric circuit diagram showing an embodiment of the frequency conversion circuit of the present invention, and FIGS. 2 a to 2f show the sine wave input to the frequency conversion circuit shown in FIG. Waveform diagrams at each point in the circuit diagram, FIGS. 3a, 3b, and 3c, are schematic diagrams for explaining inconveniences when the output waveform from a conventional rotation sensor is processed by a microcomputer. 1a, 1b...connector, 3...full wave rectifier,
11... operational amplifier, 12... capacitor (sample and hold means), 13'14... diode, 15... resistor, 16... Schmitt trigger circuit, 17... flip-flop circuit.
Claims (1)
ぞれの時間的中央部でピーク値を有する周期的信
号を発生する周期的信号発生器において、 上記周期的信号を全波整流する手段と、 この全波整流された個々の波形のピーク値にお
いてサンプルホールドする手段と、 このサンプルホールドされた信号をクロツク入
力信号とするフリツプフロツプ回路と、 を具備し、上記周期的信号の２倍の周波数の信号
を取出すようにしたことを特徴とする周波数変換
回路。[Claims for Utility Model Registration] A periodic signal generator that generates a periodic signal having a peak value at the temporal center of each of the first half period and the second half period of one period, means for full-wave rectification; means for sample-and-holding at the peak value of each of the full-wave rectified waveforms; and a flip-flop circuit that uses the sample-and-held signal as a clock input signal. 1. A frequency conversion circuit characterized in that it extracts a signal with a frequency twice that of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12671386U JPS6333217U (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12671386U JPS6333217U (en) | 1986-08-20 | 1986-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333217U true JPS6333217U (en) | 1988-03-03 |
Family
ID=31020781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12671386U Pending JPS6333217U (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01221614A (en) * | 1988-03-01 | 1989-09-05 | Mitsubishi Electric Corp | Crank angle detecting device for engine |
-
1986
- 1986-08-20 JP JP12671386U patent/JPS6333217U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01221614A (en) * | 1988-03-01 | 1989-09-05 | Mitsubishi Electric Corp | Crank angle detecting device for engine |
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