JPS6381698U - - Google Patents
Info
- Publication number
- JPS6381698U JPS6381698U JP1986173749U JP17374986U JPS6381698U JP S6381698 U JPS6381698 U JP S6381698U JP 1986173749 U JP1986173749 U JP 1986173749U JP 17374986 U JP17374986 U JP 17374986U JP S6381698 U JPS6381698 U JP S6381698U
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- zero
- crossing
- microcomputer
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Description
第１図はこの考案に係わるフアン制御回路のブ
ロツク構成図、第２図はゼロクロス検出回路の動
作説明図、第３図は従来のフアン制御回路のブロ
ツク構成図、第４図はトライアツクの導通状態を
示した説明図、第５図は三角波とスイツチ信号と
の関係を示した説明図である。
１１……ゼロクロス検出回路、１２……ＡＣ電
源、１５……回転数検出手段、１６……マイクロ
コンピユータ、１７……スイツチング回路、１９
……トライアツク。
Fig. 1 is a block diagram of the fan control circuit according to this invention, Fig. 2 is an explanatory diagram of the operation of the zero-cross detection circuit, Fig. 3 is a block diagram of the conventional fan control circuit, and Fig. 4 is the conduction state of the triac. FIG. 5 is an explanatory diagram showing the relationship between the triangular wave and the switch signal. 11...Zero cross detection circuit, 12...AC power supply, 15...Rotation speed detection means, 16...Microcomputer, 17...Switching circuit, 19
...Triatc.
Claims (1)
回路と、スイツチング信号によつて前記電源の位
相角を制御してフアンモータの回転数を制御する
スイツチング回路とを備えているフアン制御回路
において、前記フアンモータの回転数を検出する
回転数検出手段と、この回転数検出手段が検出す
る回転数と予め設定した設定回転数との差をゼロ
にする点弧角を演算するマイクロコンピユータと
を備え、このマイクロコンピユータは前記ゼロク
ロス検出回路が検出したゼロクロス点を基準にし
て上記の演算した点弧角の時点で前記スイツチン
グ信号を出力するようになつていることを特徴と
するフアン制御回路。 The fan control circuit includes a zero-crossing detection circuit that detects a zero-crossing point of a power source, and a switching circuit that controls the rotation speed of the fan motor by controlling the phase angle of the power source using a switching signal. The microcomputer is equipped with a rotation speed detection means for detecting the rotation speed, and a microcomputer that calculates a firing angle that makes the difference between the rotation speed detected by the rotation speed detection means and a preset rotation speed to zero. The fan control circuit is configured to output the switching signal at the firing angle calculated above based on the zero-crossing point detected by the zero-crossing detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986173749U JPS6381698U (en) | 1986-11-12 | 1986-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986173749U JPS6381698U (en) | 1986-11-12 | 1986-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6381698U true JPS6381698U (en) | 1988-05-30 |
Family
ID=31111503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986173749U Pending JPS6381698U (en) | 1986-11-12 | 1986-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6381698U (en) |
-
1986
- 1986-11-12 JP JP1986173749U patent/JPS6381698U/ja active Pending
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