JPS6440016U - - Google Patents
Info
- Publication number
- JPS6440016U JPS6440016U JP13462687U JP13462687U JPS6440016U JP S6440016 U JPS6440016 U JP S6440016U JP 13462687 U JP13462687 U JP 13462687U JP 13462687 U JP13462687 U JP 13462687U JP S6440016 U JPS6440016 U JP S6440016U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- sensor
- reference position
- reflective
- moving object
- 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 8
- 230000010363 phase shift Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Description
第１図は本考案の一実施例にかかる位置検出装
置の信号処理回路を示した回路図、第２図は位置
検出装置の一例を示す概略斜視図、第３図ａは一
方の位置パルス検出用の反射型センサの出力信号
を例示した波形図、同図ｂは他方の位置パルス検
出用の反射型センサの出力信号を例示した波形図
、同図ｃは限界位置検出用の反射型センサの出力
信号を例示した波形図、第４図ａは第３図ａの信
号に基づいて形成される位置検出パルス信号を示
す波形図、同図ｂは第３図ｂの信号に基づいて形
成される位置検出パルス信号を示す波形図、同図
ｃは第３図ｃの信号に基づいて形成される限界位
置検出パルス信号を示す波形図である。
１……エンコード板、２，９，１０，１１……
スリツト、３，４……窓、５，６，７……反射型
センサ、５ａ，６ａ，７ａ……発光ダイオード、
５ｂ，６ｂ，７ｂ……フオトトランジスタ、８…
…マスク、２０……トランジスタ、２２，２３，
２４……電流／電圧変換アンプ、２５……差動ア
ンプ、２６……基準電圧発生器、２８……ツエナ
ーダイオード。
Fig. 1 is a circuit diagram showing a signal processing circuit of a position detecting device according to an embodiment of the present invention, Fig. 2 is a schematic perspective view showing an example of the position detecting device, and Fig. 3 a shows one position pulse detection circuit. Figure b is a waveform diagram illustrating the output signal of the reflective sensor for position pulse detection, and Figure c is a waveform diagram illustrating the output signal of the reflective sensor for limit position detection. A waveform diagram illustrating an output signal, FIG. 4a is a waveform diagram showing a position detection pulse signal formed based on the signal in FIG. 3a, and FIG. 4b is a waveform diagram showing a position detection pulse signal formed based on the signal in FIG. 3b. FIG. 3c is a waveform diagram showing the limit position detection pulse signal formed based on the signal in FIG. 3c. 1... Encoding board, 2, 9, 10, 11...
Slit, 3, 4... Window, 5, 6, 7... Reflective sensor, 5a, 6a, 7a... Light emitting diode,
5b, 6b, 7b...phototransistor, 8...
...Mask, 20...Transistor, 22, 23,
24... Current/voltage conversion amplifier, 25... Differential amplifier, 26... Reference voltage generator, 28... Zener diode.
Claims (1)
て、移動体の運動に伴つて互いに位相が９０度ず
れた２つの位置パルスを出力する２つの位置パル
ス用反射型センサと、移動体が基準位置に位置し
ていることをあらわす基準位置信号を出力する基
準位置信号用反射型センサを備えた位置検出装置
において、上記２つの位置パルス用反射型センサ
の発光素子および上記基準位置信号用反射型セン
サの発光素子を直列接続し、この直列接続された
上記２つの位置パルス用反射型センサの発光素子
および上記基準位置信号用反射型センサの発光素
子に流れる電流を変化する機能素子と、上記基準
位置信号用反射型センサの出力レベルの基準値か
らの偏差信号を上記機能素子にフイードバツクす
るフイードバツク手段を備えたことを特徴とする
位置検出装置。 Two position pulse reflective sensors that face an encoder plate attached to the moving object and output two position pulses with a phase shift of 90 degrees as the moving object moves, and a sensor that outputs two position pulses that are out of phase with each other as the moving object moves, and In a position detection device equipped with a reference position signal reflection type sensor that outputs a reference position signal indicating a position, the light emitting element of the two position pulse reflection type sensors and the reference position signal reflection type sensor are provided. A functional element in which light emitting elements are connected in series and changes the current flowing through the light emitting elements of the two serially connected reflective sensors for position pulses and the light emitting elements of the reflective sensor for reference position signals, and the reference position signal. 1. A position detection device comprising feedback means for feeding back a deviation signal of an output level of a reflective sensor from a reference value to the functional element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13462687U JPS6440016U (en) | 1987-09-04 | 1987-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13462687U JPS6440016U (en) | 1987-09-04 | 1987-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6440016U true JPS6440016U (en) | 1989-03-09 |
Family
ID=31393555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13462687U Pending JPS6440016U (en) | 1987-09-04 | 1987-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6440016U (en) |
-
1987
- 1987-09-04 JP JP13462687U patent/JPS6440016U/ja active Pending