JPS5810016U - Photoelectric encoder failure detection circuit - Google Patents
Photoelectric encoder failure detection circuitInfo
- Publication number
- JPS5810016U JPS5810016U JP10437681U JP10437681U JPS5810016U JP S5810016 U JPS5810016 U JP S5810016U JP 10437681 U JP10437681 U JP 10437681U JP 10437681 U JP10437681 U JP 10437681U JP S5810016 U JPS5810016 U JP S5810016U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- component
- failure detection
- photoelectric encoder
- amplifier
- 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
- Arrangements For Transmission Of Measured Signals (AREA)
- Optical Transform (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は一般的な光電型エンｈ−ダの概略構成を示す説
明図、第２図は第１図における検出信号波形図、第３図
は本考案に係る故障検出回路の好適な実施例令示す回路
図、第４図は第３図の要部波形図である。
２０・・・・・・増幅器、２２・・・・・・ＡＤ変換器
、２８・・・・・・比較器。FIG. 1 is an explanatory diagram showing the schematic configuration of a general photoelectric encoder, FIG. 2 is a detection signal waveform diagram in FIG. 1, and FIG. 3 is a preferred embodiment of the failure detection circuit according to the present invention. The circuit diagram shown in FIG. 4 is a waveform diagram of the main part of FIG. 3. 20...Amplifier, 22...AD converter, 28...Comparator.
Claims (1)
子を透過または反射する光の明暗を電気信号に変換する
光電変換器と、を含み、物理量変化に対応する光学格子
の相対移動量を電気信号として検出する光電型エンコー
ダにおいて、前記光電変換器の出力信号を直流成分と共
に増幅する増幅器と、増幅器の出力から直流成分を除去
して光学格子の相対移動量に対応する信号成分をデジタ
ル信号に変換するＡＤ変換器と、前記増幅器の出力に含
まれる直流成分を所定の基準値と比較して故障検出信号
を出力する比較回路と、を含むことを特徴とする光電型
エンコーダの故障検出回路。At least a pair of optical gratings that move relatively, and a photoelectric converter that converts the brightness of light transmitted or reflected through the optical gratings into an electrical signal, and converts the amount of relative movement of the optical gratings corresponding to a change in a physical quantity into an electrical signal. The photoelectric encoder for detection includes an amplifier that amplifies the output signal of the photoelectric converter together with a DC component, and a signal component that removes the DC component from the output of the amplifier and converts the signal component corresponding to the amount of relative movement of the optical grating into a digital signal. 1. A failure detection circuit for a photoelectric encoder, comprising: an AD converter; and a comparison circuit that compares a DC component included in the output of the amplifier with a predetermined reference value and outputs a failure detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10437681U JPS5810016U (en) | 1981-07-14 | 1981-07-14 | Photoelectric encoder failure detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10437681U JPS5810016U (en) | 1981-07-14 | 1981-07-14 | Photoelectric encoder failure detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5810016U true JPS5810016U (en) | 1983-01-22 |
Family
ID=29898976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10437681U Pending JPS5810016U (en) | 1981-07-14 | 1981-07-14 | Photoelectric encoder failure detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573947U (en) * | 1980-06-06 | 1982-01-09 | ||
| JPS60196021U (en) * | 1984-05-31 | 1985-12-27 | いすゞ自動車株式会社 | Control cable assembly structure |
-
1981
- 1981-07-14 JP JP10437681U patent/JPS5810016U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573947U (en) * | 1980-06-06 | 1982-01-09 | ||
| JPS60196021U (en) * | 1984-05-31 | 1985-12-27 | いすゞ自動車株式会社 | Control cable assembly structure |
| JPH0542255Y2 (en) * | 1984-05-31 | 1993-10-25 |
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