JPH0271273U - - Google Patents
Info
- Publication number
- JPH0271273U JPH0271273U JP15055788U JP15055788U JPH0271273U JP H0271273 U JPH0271273 U JP H0271273U JP 15055788 U JP15055788 U JP 15055788U JP 15055788 U JP15055788 U JP 15055788U JP H0271273 U JPH0271273 U JP H0271273U
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- signal line
- encoder
- count
- generates
- 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 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Analogue/Digital Conversion (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案の一実施例の構成図、第２図及
び第３図は第１図の回路の動作説明図である。
１……エンコーダ、２，３……パルス発生回路
、４……アツプ・ダウンカウンタ、５，６，７…
…アンドゲート、８……オアゲート。
FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of the operation of the circuit shown in FIG. 1. 1... Encoder, 2, 3... Pulse generation circuit, 4... Up/down counter, 5, 6, 7...
...and gate, 8...or gate.
Claims (1)
ーダの出力信号線の断線を検出する回路において
、 ２相信号の一方の信号の変化によりアツプカウ
ントし、他方の信号の変化によりダウンカウント
するアツプ・ダウンカウンタと、 このアツプ・ダウンカウンタのカウントＸが、
−１≦Ｘ≦１の範囲から外れたときに前記出力信
号線の断線ありのエラー信号を発生するエラー検
出回路、 を具備したエンコーダの断線検出回路。[Claims for Utility Model Registration] In a circuit that detects disconnection of the output signal line of an encoder that generates two-phase signals with a phase difference of 90°, an up-count is performed according to a change in one of the two-phase signals, and a change in the other signal is performed. The up/down counter counts down due to changes, and the count X of this up/down counter is
A disconnection detection circuit for an encoder, comprising: an error detection circuit that generates an error signal indicating that the output signal line is disconnected when the output signal line is out of the range of -1≦X≦1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15055788U JPH0620142Y2 (en) | 1988-11-18 | 1988-11-18 | Encoder disconnection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15055788U JPH0620142Y2 (en) | 1988-11-18 | 1988-11-18 | Encoder disconnection detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0271273U true JPH0271273U (en) | 1990-05-30 |
| JPH0620142Y2 JPH0620142Y2 (en) | 1994-05-25 |
Family
ID=31423814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15055788U Expired - Lifetime JPH0620142Y2 (en) | 1988-11-18 | 1988-11-18 | Encoder disconnection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620142Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04166717A (en) * | 1990-10-30 | 1992-06-12 | Juki Corp | Abnormality detecting apparatus for encoder |
| JP2006177733A (en) * | 2004-12-21 | 2006-07-06 | Fuji Electric Systems Co Ltd | Failure detecting apparatus of rotation speed detector |
-
1988
- 1988-11-18 JP JP15055788U patent/JPH0620142Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04166717A (en) * | 1990-10-30 | 1992-06-12 | Juki Corp | Abnormality detecting apparatus for encoder |
| JP2006177733A (en) * | 2004-12-21 | 2006-07-06 | Fuji Electric Systems Co Ltd | Failure detecting apparatus of rotation speed detector |
| JP4631427B2 (en) * | 2004-12-21 | 2011-02-16 | 富士電機システムズ株式会社 | Fault detector for rotational speed detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0620142Y2 (en) | 1994-05-25 |
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